Query: siRNA

This page shows you your search results in order of date. This is page number 2.

Order by Relevance | Date

Total 13768 results found since Jan 2013.

Inhibition of immunoproteasome promotes angiogenesis via enhancing hypoxia-inducible factor-1α abundance in rats following focal cerebral ischaemia
In this study, we identified that inhibition of immunoproteasome LMP2 was able to enhance angiogenesis and facilitate neurological functional recovery in rats after focal cerebral ischemia/reperfusion. In vitro, oxygen-glucose deprivation and reperfusion (OGD/R) significantly enhanced the expression of immunoproteasome LMP2 and proteasome activities in primary culture astrocytes, but these beneficial effects were abolished by knockdown of LMP2 with siRNA transfection. Along with this, protein abundance of HIF-1α was significantly increased by inhibition LMP2 in vivo and in vitro and was associated with angiogenesis and ce...
Source: Brain, Behavior, and Immunity - July 11, 2018 Category: Neurology Source Type: research

Protective effect of berberine against cardiac ischemia/reperfusion injury by inhibiting apoptosis through the activation of Smad7
Publication date: April 2018Source: Molecular and Cellular Probes, Volume 38Author(s): Weidong Yao, Xin Wang, Kun XiaoAbstractBerberine (BBR) is an isoquinnoline derivative alkaloid extracted from Rhizoma Coptidis that has the potential to protect myocardial tissues from ischemia/reperfusion (I/R) injuries. We attempted to evaluate the effect of BBR on the proliferation and apoptosis of a hypoxia/reoxygenation (H/R) cell model and to reveal the mechanism driving the improving function of BBR myocardial tissues. The H/R cell model was established using H9c2 rat cardiac myoblasts. The cell viability, apoptotic rates, and cel...
Source: Molecular and Cellular Probes - July 11, 2018 Category: Molecular Biology Source Type: research

OGG1 regulates the level of symmetric dimethylation of histone H4 arginine-3 by interacting with PRMT5
In this study, we focused on the roles of OGG1 in histone modification. First, to study the effects of OGG1 on histone modification, the protein levels of symmetric dimethylation of histone H4 arginine-3 (H4R3me2s) were determined by western blot analysis following the knockdown or overexpression of OGG1. Second, the molecular mechanisms by which OGG1 regulates H4R3me2s were assessed by co-immunoprecipitation (CO-IP) assays in mouse embryonic fibroblast (MEF) wild-type (WT) and Ogg−/− cells. Finally, to verify the regulation of H4R3me2s by OGG1 on specific genes, chromatin immunoprecipitation (CHIP) was performed on ME...
Source: Molecular and Cellular Probes - July 11, 2018 Category: Molecular Biology Source Type: research

Lethal (2) giant larvae regulates pleural mesothelial cell polarity in pleural fibrosis
In this study, we observed that PMC polarity was lost in fibrotic pleura. Next we found increased Lethal (2) giant larvae (Lgl) bound with aPKC and PAR-6B competing against PAR-3A in PAR complex, which led to cell polarity loss. Then we demonstrated that Lgl1 siRNA prevented cell polarity loss in PMCs, and Lgl1 conditional knockout (ER-Cre+/−Lgl1flox/flox) attenuated pleural fibrosis in a mouse model. Our data indicated that Lgl1 regulates cell polarity of PMCs, inhibition of Lgl1 and maintenance of cell polarity in PMCs could be a potential therapeutic treatment approach for pleural fibrosis.
Source: Biochimica et Biophysica Acta (BBA) Molecular Cell Research - July 11, 2018 Category: Molecular Biology Source Type: research

c-Abl phosphorylation of Yin Yang 1's conserved tyrosine 254 in the spacer region modulates its transcriptional activity
In conclusion, we demonstrate the novel role of c-Abl kinase in regulation of YY1's transcriptional activity, linking YY1 regulation with c-Abl tyrosine kinase signaling pathways.Graphical abstract
Source: Biochimica et Biophysica Acta (BBA) Molecular Cell Research - July 11, 2018 Category: Molecular Biology Source Type: research

Modeling endophilin-mediated Aβ disposal in glioma cells
Publication date: Available online 4 July 2018Source: Biochimica et Biophysica Acta (BBA) - Molecular Cell ResearchAuthor(s): Bing Sun, Ping Fan, Meijian Liao, Yaou ZhangAbstractAutophagy dysregulation has emerged in age-related neurological diseases (Ulland et al.; Matheoud et al.; Ashkenazi et al. [[1], [2], [3]]). Alzheimer Disease (AD), the most common progressive neurodegenerative disorder, is characterized by the accumulation of amyloid-β (Aβ) plaques caused by aberrant Aβ metabolism (Qiang et al.; Sevigny et al.; Ittner et al. [[4], [5], [6]]). Glia constitute the brain immune system and ingest extracellular Aβ ...
Source: Biochimica et Biophysica Acta (BBA) Molecular Cell Research - July 11, 2018 Category: Molecular Biology Source Type: research

Neuroprotection against 6-OHDA toxicity in PC12 cells and mice through the Nrf2 pathway by a sesquiterpenoid from Tussilago farfara
Publication date: September 2018Source: Redox Biology, Volume 18Author(s): Joohee Lee, Kwangho Song, Eugene Huh, Myung Sook Oh, Yeong Shik KimAbstractOxidative stress plays a key role in neurodegenerative diseases such as Alzheimer's and Parkinson's diseases. Therefore, the nuclear factor-E2-related factor 2 (Nrf2), a key regulator of the antioxidative response, is considered to be important as a therapeutic target for neurodegenerative diseases. We investigated the underlying mechanism of Nrf2-mediated neuroprotective effects against oxidative stress in the PC12 cell line by 7β-(3-ethyl-cis-crotonoyloxy)-1α-(2-methylbut...
Source: Redox Biology - July 11, 2018 Category: Biology Source Type: research

Effects of the stimuli-dependent enrichment of 8-oxoguanine DNA glycosylase1 on chromatinized DNA
Publication date: September 2018Source: Redox Biology, Volume 18Author(s): Wenjing Hao, Tianyang Qi, Lang Pan, Ruoxi Wang, Bing Zhu, Leopoldo Aguilera-Aguirre, Zsolt Radak, Tapas K. Hazra, Spiros A. Vlahopoulos, Attila Bacsi, Allan R. Brasier, Xueqing Ba, Istvan BoldoghAbstract8-Oxoguanine DNA glycosylase 1 (OGG1) initiates the base excision repair pathway by removing one of the most abundant DNA lesions, 8-oxo-7,8-dihydroguanine (8-oxoG). Recent data showed that 8-oxoG not only is a pro-mutagenic genomic base lesion, but also functions as an epigenetic mark and that consequently OGG1 acquire distinct roles in modulation o...
Source: Redox Biology - July 11, 2018 Category: Biology Source Type: research

Carbon monoxide releasing molecule-2 attenuates Pseudomonas aeruginosa-induced ROS-dependent ICAM-1 expression in human pulmonary alveolar epithelial cells
Publication date: September 2018Source: Redox Biology, Volume 18Author(s): Chiang-Wen Lee, Cheng-Hsun Wu, Yao-Chang Chiang, Yuh-Lien Chen, Kuo-Ting Chang, Chu-Chun Chuang, I-Ta LeeAbstractPseudomonas aeruginosa (P. aeruginosa) infection in the lung is common in patients with cystic fibrosis (CF). Intercellular adhesion molecule-1 (ICAM-1) is known to play a key role in lung inflammation. Acute inflammation and its timely resolution are important to ensure bacterial clearance and limit tissue damage. Carbon monoxide (CO) has been shown to exert anti-inflammatory effects in various tissues and organ systems. Here, we explore...
Source: Redox Biology - July 11, 2018 Category: Biology Source Type: research

Polydatin prevents fructose-induced liver inflammation and lipid deposition through increasing miR-200a to regulate Keap1/Nrf2 pathway
Publication date: Available online 5 July 2018Source: Redox BiologyAuthor(s): Xiao-Juan Zhao, Han-Wen Yu, Yan-Zi Yang, Wen-Yuan Wu, Tian-Yu Chen, Ke-Ke Jia, Lin-Lin Kang, Rui-Qing Jiao, Ling-Dong KongAbstractOxidative stress is a critical factor in nonalcoholic fatty liver disease pathogenesis. MicroRNA-200a (miR-200a) is reported to target Kelch-like ECH-associated protein 1 (Keap1), which regulates nuclear factor erythroid 2-related factor 2 (Nrf2) anti-oxidant pathway. Polydatin (3,4′,5-trihydroxy-stilbene-3-β-D-glucoside), a polyphenol found in the rhizome of Polygonum cuspidatum, have anti-oxidative, anti-inflammat...
Source: Redox Biology - July 11, 2018 Category: Biology Source Type: research

High circulatory leptin mediated NOX-2-peroxynitrite-miR21 axis activate mesangial cells and promotes renal inflammatory pathology in nonalcoholic fatty liver disease
Publication date: July 2018Source: Redox Biology, Volume 17Author(s): Firas Alhasson, Ratanesh Kumar Seth, Sutapa Sarkar, Diana A. Kimono, Muayad S. Albadrani, Diptadip Dattaroy, Varun Chandrashekaran, Geoffrey I. Scott, Samir Raychoudhury, Mitzi Nagarkatti, Prakash Nagarkatti, Anna Mae Diehl, Saurabh ChatterjeeAbstractHigh circulatory insulin and leptin followed by underlying inflammation are often ascribed to the ectopic manifestations in non-alcoholic fatty liver disease (NAFLD) but the exact molecular pathways remain unclear. We have shown previously that CYP2E1-mediated oxidative stress and circulating leptin in NAFLD...
Source: Redox Biology - July 11, 2018 Category: Biology Source Type: research

Neuralized1a regulates asymmetric division in mouse Lewis lung carcinoma cells
Publication date: 1 August 2018Source: Life Sciences, Volume 206Author(s): Liangsheng Kong, Jingyuan Li, Yongli Liu, Zhiwei Sun, Shixia Zhou, Junling Tang, Ting Ye, Jianyu Wang, H. Rosie XingAbstractAsymmetric division (ASD), the unique characteristic of normal stem cells, is regarded as a stemness marker when applied to the study of cancer stem cells (CSCs). However, the role of ASD in the self-renewal of CSCs and its regulation remain largely unknown. Here, we first established a mouse Lewis lung carcinoma CSC cell line that could undergo asymmetric division (LLC-ASD cells) derived from the parental mouse Lewis lung carc...
Source: Life Sciences - July 11, 2018 Category: Biology Source Type: research

Exogenous hydrogen sulfide ameliorates high glucose-induced myocardial injury & inflammation via the CIRP-MAPK signaling pathway in H9c2 cardiac cells
In this study, we hypothesize that exogenous H2S may protect cardiac cells against high glucose (HG)-induced myocardial injury and inflammation with the involvement of the CIRP-MAPK signaling pathway.Main methodsH9c2 cardiac cells cultured under HG conditions were transfected with siRNA and different inhibitors for detecting the effects of sodium hydrogen sulfide (NaHS) (a H2S donor) on cell biological processes. The cardiac cell viability and LDH activity were determined by CCK-8 and LDH kit. ELISA was employed to measure the levels of inflammatory factors, while 2′,7′-dichlorofluorescein diacetate (DCFH-DA) to evalua...
Source: Life Sciences - July 11, 2018 Category: Biology Source Type: research

CRIP1 promotes cell migration, invasion and epithelial-mesenchymal transition of cervical cancer by activating the Wnt/β‑catenin signaling pathway
In conclusion, CRIP1 promotes cell migration and invasion, mediates EMT and activates the Wnt/β‑catenin signaling pathway in CC.
Source: Life Sciences - July 11, 2018 Category: Biology Source Type: research

Fibulin-1 interacts with Sex Hormone Binding Globulin and is linked to less aggressive estrogen-dependent breast cancers
In this study we investigated the expression of fibulins, their functional relationship with SHBG and involvement in behavior of estrogen-sensitive breast cancer.Main methodsGene expression of fibulins was performed by Real time-PCR on two estrogen-sensitive breast cancer cell lines, MCF-7 and T47D. Fibulin-1 protein expression and localization were determined by Western blot and immunofluorescence. SHBG interaction with-fibulin-1 was assessed by GST-pull down assay. MCF-7 cell growth and gene expression, after fibulin-1 silencing by siRNA, were evaluated. Finally, the expression of fibulin-1 was correlated to clinical and...
Source: Life Sciences - July 11, 2018 Category: Biology Source Type: research

Daidzein-rich isoflavone aglycones inhibit cell growth and inflammation in endometriosis
In conclusion, DRIAs inhibit cellular proliferation in endometriosis, thus representing a potential therapeutic option for the management of endometriosis.
Source: The Journal of Steroid Biochemistry and Molecular Biology - July 11, 2018 Category: Biochemistry Source Type: research

Molecular mechanisms underlying progesterone-induced cytoplasmic retention of p27 in breast cancer cells
Publication date: Available online 27 June 2018Source: The Journal of Steroid Biochemistry and Molecular BiologyAuthor(s): Hui-Chen Wang, Wen-Sen LeeAbstractIt has been reported that progesterone (P4) can contribute to the aggressiveness of human breast cancers through promoting cytoplasmic localization of p27 and stimulating proliferation. However, the molecular mechanisms underlying P4-induced cytoplasmic retention of p27 are still unclear. Here, we demonstrated that P4 (12.5–100 nM) concentration-dependently increased the number of T47D and MCF-7 cells. P4 (50 nM) also time-dependently increased the levels of p27 ...
Source: The Journal of Steroid Biochemistry and Molecular Biology - July 11, 2018 Category: Biochemistry Source Type: research

Impairment of the Gnα11-controlled expression of claudin-1 and MMP-9 and collective migration of human breast cancer MCF-7 cells by DHEAS
Publication date: Available online 21 April 2018Source: The Journal of Steroid Biochemistry and Molecular BiologyAuthor(s): Neha Upmanyu, Ahmed Bulldan, Dimitrios Papadopoulos, Raimund Dietze, Viveka Nand Malviya, Georgios Scheiner-BobisAbstractAlthough dehydroepiandrosterone sulfate (DHEAS) constitutes the most abundant steroid in humans, in-depth investigations of its effects are rather scarce. We address here DHEAS effects on the estrogen receptor-positive metastatic human breast cancer cell line MCF-7. We focus on DHEAS-mediated signaling that might influence expression of claudin-1 and matrix metalloproteinase-9 (MMP-...
Source: The Journal of Steroid Biochemistry and Molecular Biology - July 11, 2018 Category: Biochemistry Source Type: research

Apoptosis signal regulating kinase-1 and NADPH oxidase mediate human amylin evoked redox stress and apoptosis in pancreatic beta-cells
Publication date: Available online 6 April 2018Source: Biochimica et Biophysica Acta (BBA) - BiomembranesAuthor(s): Sanghamitra Singh, Diti Chatterjee Bhowmick, Satyabrata Pany, Myungkuk Joe, Noor Zaghlula, Aleksandar M. JeremicAbstractMisfolded toxic human islet amyloid polypeptide or amylin (hA) and plasma membrane-associated redox complex, NADPH oxidase (NOX), have been implicated in the islet β-cell demise associated with type-2 diabetes mellitus (T2DM). Studies show that hA accumulation is stressful to β-cells and that misfolding of human amylin evokes redox stress and activates mitogen activated protein (MAP) kinas...
Source: Biochimica et Biophysica Acta (BBA) Biomembranes - July 11, 2018 Category: Biochemistry Source Type: research

Direct and specific inhibition of constitutive nitric oxide synthase uniquely regulates brush border membrane Na-absorptive pathways in intestinal epithelial cells
Publication date: 1 September 2018Source: Nitric Oxide, Volume 79Author(s): Balasubramanian Palaniappan, Uma SundaramAbstractPharmacological manipulations of constitutive nitric oxide (cNO) levels have been shown to have variable effects on Na absorption in vivo and in vitro in different tissues. Species differences, untoward in vivo effects (e.g. ENS, blood flow) and pharmacological non-specificity may account for these confounding observations. Thus, to directly and specifically determine the effect of cNO on brush border membrane Na/H exchange (NHE3) and Na-dependent glucose co-transport (SGLT-1), we inhibited cNO sy...
Source: Nitric Oxide - July 11, 2018 Category: Chemistry Source Type: research

Avobenzone suppresses proliferative activity of human trophoblast cells and induces apoptosis mediated by mitochondrial disruption
This study suggests that avobenzone induces mitochondrial dysfunction-mediated apoptosis leading to abnormal placentation during early pregnancy.
Source: Reproductive Toxicology - July 11, 2018 Category: Toxicology Source Type: research

Theabrownin triggers DNA damage to suppress human osteosarcoma U2OS cells by activating p53 signalling pathway.
Abstract Osteosarcoma becomes the second leading cause of cancer death in the younger population. Current outcomes of chemotherapy on osteosarcoma were unsatisfactory to date, demanding development of effective therapies. Tea is a commonly used beverage beneficial to human health. As a major component of tea, theabrownin has been reported to possess anti-cancer activity. To evaluate its anti-osteosarcoma effect, we established a xenograft model of zebrafish and employed U2OS cells for in vivo and in vitro assays. The animal data showed that TB significantly inhibited the tumour growth with stronger effect than t...
Source: J Cell Mol Med - July 11, 2018 Category: Molecular Biology Authors: Jin W, Zhou L, Yan B, Yan L, Liu F, Tong P, Yu W, Dong X, Xie L, Zhang J, Xu Y, Li C, Yuan Q, Shan L, Efferth T Tags: J Cell Mol Med Source Type: research

Heat-shock transcription factor 1 is critically involved in the ischaemia-induced cardiac hypertrophy via JAK2/STAT3 pathway.
Abstract Cardiac hypertrophy after myocardial infarction (MI) is an independent risk factor for heart failure. Regression of cardiac hypertrophy has emerged as a promising strategy in the treatment of MI patients. Here, we have been suggested that heat-shock transcription factor 1 (HSF1) is a novel repressor of ischaemia-induced cardiac hypertrophy. Ligation of left anterior descending coronary was used to produce MI in HSF1-deficient heterozygote (KO), HSF1 transgenic (TG) mice and their wild-type (WT) littermates, respectively. Neonatal rat cardiomyocytes (NRCMs) were treated by hypoxia to mimic MI in vitro. The...
Source: J Cell Mol Med - July 11, 2018 Category: Molecular Biology Authors: Yuan L, Qiu L, Ye Y, Wu J, Wang S, Wang X, Zhou N, Zou Y Tags: J Cell Mol Med Source Type: research

Inhibition of the Nrf2/HO-1 Axis Suppresses the Mitochondria-Related Protection Promoted by Gastrodin in Human Neuroblastoma Cells Exposed to Paraquat
AbstractMitochondria are double-membrane organelles involved in the transduction of energy from different metabolic substrates into adenosine triphosphate (ATP) in mammalian cells. The oxidative phosphorylation system is comprised by the activity of the respiratory chain and the complex V (ATP synthase/ATPase). This system is dependent on oxygen gas (O2) in order to maintain a flux of electrons in the respiratory chain, since O2 is the final acceptor of these electrons. Electron leakage from this complex system leads to the continuous generation of reactive species in the cells. The mammalian cells exhibit certain mechanis...
Source: Molecular Neurobiology - July 11, 2018 Category: Neurology Source Type: research

Characterization of the essential role of bone morphogenetic protein 9 (BMP9) in osteogenic differentiation of mesenchymal stem cells (MSCs) through RNA interference
Publication date: June 2018Source: Genes & Diseases, Volume 5, Issue 2Author(s): Shujuan Yan, Ruyi Zhang, Ke Wu, Jing Cui, Shifeng Huang, Xiaojuan Ji, Liping An, Chengfu Yuan, Cheng Gong, Linghuan Zhang, Wei Liu, Yixiao Feng, Bo Zhang, Zhengyu Dai, Yi Shen, Xi Wang, Wenping Luo, Bo Liu, Rex C. Haydon, Michael J. LeeAbstractMesenchymal stem cells (MSCs) are multipotent stem cells and capable of differentiating into multiple cell types including osteoblastic, chondrogenic and adipogenic lineages. We previously identified BMP9 as one of the most potent BMPs that induce osteoblastic differentiation of MSCs although exact molec...
Source: Genes and Diseases - July 10, 2018 Category: Genetics & Stem Cells Source Type: research

Silencing of PRR11 suppresses cell proliferation and induces autophagy in NSCLC cells
Publication date: June 2018Source: Genes & Diseases, Volume 5, Issue 2Author(s): Lian Zhang, Yunlong Lei, Ying Zhang, Yi Li, Youquan Bu, Fangzhou Song, Chundong ZhangAbstractOur previous studies have demonstrated that proline-rich protein 11 (PRR11) is a novel tumor-related gene and implicates in regulating the proliferation in lung cancer. However, its precise role in cell cycle progression remains unclear. Our recent evidences show that PRR11 silencing has an effect on autophagy in non-small-cell lung cancer (NSCLC) cells. Two human NSCLC cell lines, H1299 and A549 were transiently transfected with against PRR11 siRNA. T...
Source: Genes and Diseases - July 10, 2018 Category: Genetics & Stem Cells Source Type: research

Role of PERK-eIF2α signaling pathway in fetal male rats with hypospadias induced by di-n-butyl phthalate
This study aims to explore the role of PERK-eIF2α signaling pathway in fetal male rats with hypospadias induced by maternal exposure to di-n-butyl phthalate (DBP). DBP was used to treat pregnant SD rats by gastric intubation from gestation day (GD) 14–18 to construct a hypospadias rat model. The amount, weight, anogenital distance (AGD), and hypospadias incidence of rats were recorded and the genital tubercle (GT) of fetal male rats was collected on GD 19. Western blotting was performed to detect the expressions of PERK-eIF2α pathway- and autophagy-related proteins, and cell apoptosis was detected using TUNEL method. T...
Source: The Kaohsiung Journal of Medical Sciences - July 10, 2018 Category: Universities & Medical Training Source Type: research

Methacholine induces extracellular matrix production by human airway smooth muscle cells through β-catenin signaling
This study attempted to investigate the role of methacholine in promoting ECM production by human ASMCs (HASMCs) and the underlying mechanism. We found that methacholine induced the expression of collagen I protein and multiple ECM genes. β-catenin signaling was activated in this process upon GSK3β phosphorylation, leading to upregulation of total and active β-catenin. Silencing β-catenin by specific small interfering RNA (siRNA) or with the β-catenin inhibitor, PKF115-584, decreased collagen I expression. Conversely, overexpression of active β-catenin by adenoviruses carrying the S33Y-β-catenin mutant increased the...
Source: Respiratory Physiology and Neurobiology - July 10, 2018 Category: Respiratory Medicine Source Type: research

Macrophage migration inhibitory factor is a novel prognostic marker for human oral squamous cell carcinoma
The objective of this study was to investigate the expression of MIF and its receptor CD74 in OSCC tissues, and to study the function of MIF in OSCC cells. Tissues of 90 patients with OSCC from the School of Stomatology, China Medical University were collected, and immunohistochemical staining and quantitative reverse transcription polymerase chain reaction were performed for MIF and CD74. The possible correlations between MIF and CD74 and clinical characteristics were analysed. The Kaplan-Meier analysis was used to determine the survival rates of patients. In addition, the proliferation and invasion of OSCC cells were eva...
Source: Pathology Research and Practice - July 10, 2018 Category: Pathology Source Type: research

Knockdown of TRIM66 inhibits malignant behavior and epithelial-mesenchymal transition in non-small cell lung cancer
ConclusionSilence TRIM66 expression suppressed NSCLC cell proliferation, invasion, and migration. The siRNA-mediated TRIM66 silencing could block the occurrence of EMT. TRIM66 could be a promising novel target for future NSCLC treatments.
Source: Pathology Research and Practice - July 10, 2018 Category: Pathology Source Type: research

IL-1β promotes the migration of olfactory epithelium neural stem cells through activating matrix metalloproteinase expressions
ConclusionOur study demonstrated that IL-1β promoted the migration of OENSCs through activating MMP expression. Moreover, JNK and NF-κB signaling pathways were involved in the regulation. This study provides important experimental evidence for the application of OENSCs in the transplantation therapy.
Source: Pathology Research and Practice - July 10, 2018 Category: Pathology Source Type: research

Beta2 adrenergic receptor silencing change intraocular pressure in New Zealand rabbits
ConclusionThe use of siRNA against the beta2 adrenergic receptors could provide an interesting therapeutic strategy for glaucoma treatment.ResumenObjetivoEl glaucoma consiste en un grupo de neuropatías ópticas progresivas caracterizadas por degeneración del nervio óptico y pérdida irreversible del campo visual. La elevación de la presión intraocular es el único factor de riesgo tratable probado, centrándose los productos comerciales para el tratamiento del glaucoma en la reducción de la presión intraocular. Estos fármacos pueden tener diversos efectos secundarios indeseados, lo cual invita a buscar nuevas estra...
Source: Journal of Optometry - July 10, 2018 Category: Opthalmology Source Type: research

Decidual ACVR2A regulates extravillous trophoblast functions of adhesion, proliferation, migration and invasion in vitro
Publication date: April 2018Source: Pregnancy Hypertension, Volume 12Author(s): Hannah E.J. Yong, Padma Murthi, Bill Kalionis, Rosemary J. Keogh, Shaun P. BrenneckeAbstractDecidual stromal cells form the largest proportion of maternal cells at the maternal-fetal interface. Our aim was to investigate the role of the pre-eclampsia associated decidual activin receptor, ACVR2A, in regulating trophoblast functions at this interface. St-T1b and HTR-8/SVneo cell lines were used to model decidual stromal and trophoblast cells respectively. St-T1b conditioned medium inhibited HTR-8/SVneo adhesion, proliferation, migration and invas...
Source: Pregnancy Hypertension: An International Journal of Womens Cardiovascular Health - July 10, 2018 Category: OBGYN Source Type: research

Reduced Methylation Downregulates CD39/ENTPD1 and ZDHHC14 to Suppress Trophoblast Cell Proliferation and Invasion: Implications in Preeclampsia
Publication date: Available online 24 March 2018Source: Pregnancy HypertensionAuthor(s): Lisha Zhu, Ruitu Lv, Lingchun Kong, Xiaotian LiAbstractPreeclampsia (PE) is a pregnancy-specific syndrome affecting up to 8% of pregnancies worldwide. While PE is a leading cause of maternal and neonatal mortality and morbidity, the pathophysiology of PE is unclear to date. Here, we have verified that dysregulation of CD39/ectonucleoside triphosphate diphosphohydrolase-1 (ENTPD1) and zinc finger DHHC-type containing 14 (ZDHHC14) via DNA methylation plays a vital role in late-onset PE pathology. Our study confirmed the differentially me...
Source: Pregnancy Hypertension: An International Journal of Womens Cardiovascular Health - July 10, 2018 Category: OBGYN Source Type: research

Dysfunction of pseudogene PGK1P2 is involved in preeclampsia by acting as a competing endogenous RNA of PGK1
ConclusionsWe proved that PGK1 and PGK1P2 are a pair of ceRNAs against miR-330-5p and they play a vital role in human decidualization by regulating angiogenesis and glycolysis metabolism. The deficiency of PGK1 and PGK1P2 in the decidua jeopardizes the decidualization process and subsequently might lead to the occurrence of PE. These findings may help in promoting novel predictive, diagnostic and prognostic biomarkers of PE in future.
Source: Pregnancy Hypertension: An International Journal of Womens Cardiovascular Health - July 10, 2018 Category: OBGYN Source Type: research

DNA binding protein HMGB1 secreted by activated microglia promotes the apoptosis of hippocampal neurons in diabetes complicated with OSA
Publication date: Available online 18 June 2018Source: Brain, Behavior, and ImmunityAuthor(s): Yu Shi, Xiangyu Guo, Jie Zhang, Hanchi Zhou, Bei Sun, Jing FengAbstractType 2 diabetes mellitus (T2DM) complicated with obstructive sleep apnea (OSA) may cause neuronal apoptosis and cognitive deficits, but the underlying mechanisms remain unclear. We aimed to determine the relationship between the activation of microglia and the apoptosis of hippocampal neurons, specifically in terms of high mobility group box-1 (HMGB1), after high glucose (HG) and intermittent hypoxia (IH) exposure. Diabetic KK-Ay mice and non-diabetic C57BL/6J...
Source: Brain, Behavior, and Immunity - July 10, 2018 Category: Neurology Source Type: research

BLT1-mediated O-GlcNAcylation is required for NOX2-dependent migration, exocytotic degranulation and IL-8 release of human mast cell induced by Trichomonas vaginalis-secreted LTB4
Publication date: June–July 2018Source: Microbes and Infection, Volume 20, Issue 6Author(s): Arim Min, Young Ah Lee, Kyeong Ah Kim, Myeong Heon ShinAbstractTrichomonas vaginalis is a sexually-transmitted protozoan parasite that causes vaginitis and cervicitis. Although mast cell activation is important for provoking tissue inflammation during infection with parasites, information regarding the signaling mechanisms in mast cell activation and T. vaginalis infection is limited. O-linked N-acetylglucosamine (O-GlcNAc) is a post-translational modification of serine and threonine residues that functions as a critical regulato...
Source: Microbes and Infection - July 10, 2018 Category: Infectious Diseases Source Type: research

Genome-wide profiling of adult human papillary and reticular fibroblasts identifies ACAN, Col XI α1, and PSG1 as general biomarkers of dermis ageing, and KANK4 as an exemplary effector of papillary fibroblast ageing, related to contractility
Publication date: Available online 18 June 2018Source: Mechanisms of Ageing and DevelopmentAuthor(s): Valérie Haydont, Véronique Neiveyans, Hélène Zucchi, Nicolas O. Fortunel, Daniel AsselineauAbstractDeciphering the characteristics of dermal fibroblasts is critical to further understand skin ageing. We have conducted a genome-wide transcriptomic characterization of papillary (Fp) and reticular (Fr) fibroblasts extracted from human skin samples corresponding to younger and older adult ages. From this screen, biomarkers suitable for the assessment of chronological ageing were identified, and extrapolated to the context ...
Source: Mechanisms of Ageing and Development - July 10, 2018 Category: Geriatrics Source Type: research

Effect of heme oxygenase-1 on the protection of ischemia reperfusion injury of bile duct in rats after liver transplantation
ConclusionOur study demonstrated that overexpression of HO-1 in donor liver can ameliorate the damage to bile duct and liver, and improved liver function, suggesting HO-1 might be a new therapeutic target in the treatment of IRI after liver transplantation.
Source: Clinics and Research in Hepatology and Gastroenterology - July 10, 2018 Category: Gastroenterology Source Type: research

Vitamin D suppresses macrophage infiltration by down-regulation of TREM-1 in diabetic nephropathy rats
This study intends to investigate the effect of active vitamin D (VD) on the expression of triggering receptor expressed on myeloid cells-1 (TREM-1) in the renal tissues of diabetic nephropathy (DN) rats and to explore the impact of TREM-1 on macrophage adhesion and migration. We find that the expressions of TREM-1 and CD68 protein are higher in DN rats compared with rats in the normal control group and that these changes are decreased in the DN + VD group. In vitro, the capacity for macrophage adhesion and migration and the expression of TREM-1 are increased under high-glucose conditions, but VD inhibits this progress....
Source: Molecular and Cellular Endocrinology - July 10, 2018 Category: Endocrinology Source Type: research

Mannose-conjugated layered double hydroxide nanocomposite for targeted siRNA delivery to enhance cancer therapy
Publication date: Available online 22 June 2017Source: Nanomedicine: Nanotechnology, Biology and MedicineAuthor(s): Li Li, Run Zhang, Wenyi Gu, Zhi Ping XuAbstractSheet-like layered double hydroxide nanoparticles (LDH NPs) have showed great potentials in biomedical applications such as nanocarriers for drug and gene delivery, biosensors and imaging agents. However, target delivery of drugs and genes using LDH NPs to the desired tumor sites is a major challenge in cancer therapy. The aim of this study is to develop a functional LDH-based nanocomposite for target delivery of siRNA to cancer cells. Mannose as a targeting moie...
Source: Nanomedicine: Nanotechnology, Biology and Medicine - July 5, 2018 Category: Nanotechnology Source Type: research

Lipid-based nanocarriers for siRNA delivery: challenges, strategies and the lessons learned from the DODAX:MO liposomal system.
Abstract The possibility of using the RNA interference (RNAi) mechanisms in gene therapy was one of the scientific breakthroughs of the last century. Despite the extraordinary therapeutic potential of this approach, the need for an efficient gene carrier is hampering the translation of the RNAi technology to the clinical setting. Although a diversity of nanocarriers have been described, liposomes continue to be one of the most attractive siRNA vehicles due to their relatively low toxicity, facilitated siRNA complexation, high transfection efficiency and enhanced pharmacokinetic properties. This review focuses on R...
Source: Current Drug Targets - July 3, 2018 Category: Drugs & Pharmacology Authors: Oliveira ACN, Fernandes J, Goncalves A, Gomes AC, Oliveira R Tags: Curr Drug Targets Source Type: research

Targeted Delivery of siRNA Therapeutics Using Ligand Mediated Biodegradable Polymeric Nanocarriers.
CONCLUSION: In this review, we provide ⅰ) an overview of the non-viral carrier associated with siRNA delivery for cancer treatment, and ⅱ) a description of the five major cancer-targeting ligands. PMID: 29962332 [PubMed - as supplied by publisher]
Source: Current Pharmaceutical Design - July 1, 2018 Category: Drugs & Pharmacology Authors: Jin HS, Soo CK, Hye AM, Sukdeb P, Pill-Hoon C, Sangshetti J, Arote RB Tags: Curr Pharm Des Source Type: research

Molecules, Vol. 23, Pages 1586: The Mechanism for siRNA Transmembrane Assisted by PMAL
nnan Lu The capacity of silencing genes makes small interfering RNA (siRNA) appealing for curing fatal diseases. However, the naked siRNA is vulnerable to and degraded by endogenous enzymes and is too large and too negatively charged to cross cellular membranes. An effective siRNA carrier, PMAL (poly(maleic anhydride-alt-1-decene) substituted with 3-(dimethylamino) propylamine), has been demonstrated to be able to assist siRNA transmembrane by both experiments and molecular simulation. In the present work, the mechanism of siRNA transmembrane assisted by PMAL was studied using steered molecular dynamics simulations bas...
Source: Molecules - June 29, 2018 Category: Chemistry Authors: Yanfei Lu Jipeng Li Nan Su Diannan Lu Tags: Article Source Type: research

Engineered Exosomes for Targeted Transfer of siRNA to HER2 Positive Breast Cancer Cells.
Abstract Exosomes are the best options for gene targeting, because of their natural, nontoxic, non-immunogenic, biodegradable, and targetable properties. By engineering exosome-producing cells, ligands can be expressed fusing with exosomal surface proteins for targeting cancer cell receptors. In the present study, HER2-positive breast cancer cells were targeted with a modified exosome producing engineered HEK293T cell. For this purpose, the HEK293T cells were transduced by a lentiviral vector bearing-LAMP2b-DARPin G3 chimeric gene. Stable cells expressing the fusion protein were selected, and the exosomes produced...
Source: Applied Biochemistry and Biotechnology - June 28, 2018 Category: Biochemistry Authors: Limoni SK, Moghadam MF, Moazzeni SM, Gomari H, Salimi F Tags: Appl Biochem Biotechnol Source Type: research

Cholesterol-grafted chitosan micelles as a nanocarrier system for drug-siRNA co-delivery to the lung cancer cells.
Abstract Combined delivery of a therapeutic small interfering RNA (siRNA) and a chemotherapeutic agent to cancer cells is promising as anticancer therapy, which could offer enhanced cell killing potential and low side effect. However, simultaneous delivery to tumor is challenging. In our study, cholesterol-modified low molecular weight chitosan (MW ~ 15 kDa) was employed as a self-assembled delivery system for both siRNA and a hydrophobic chemotherapeutic agent, curcumin to cancer cells. The siRNA/curcumin loaded nanoparticles (C-CCM/siRNA) were physico-chemically characterized for particle size (165 ± ...
Source: International Journal of Biological Macromolecules - June 25, 2018 Category: Biochemistry Authors: Muddineti OS, Shah A, Rompicharla SVK, Ghosh B, Biswas S Tags: Int J Biol Macromol Source Type: research

Derivation of CYP3A4 and CYP2B6 degradation rate constants in primary human hepatocytes: A siRNA-silencing-based approach.
This study aimed to measure CYP kdeg using siRNA to suppress CYP expression in primary human hepatocytes followed by incubation over a time-course and tracking of protein expression and activity to observe degradation. The magnitude of gene knockdown was determined by qPCR and activity was measured by probe substrate metabolite formation and CYP2B6-Glo™ assay. Protein disappearance was determined by Western blotting. During a time-course of 96 and 60 h of incubation, over 60% and 76% mRNA knockdown was observed for CYP3A4 and CYP2B6, respectively. The kdeg of CYP3A4 and CYP2B6 protein was 0.0138 h-1 (±0.0023) and 0.03...
Source: Drug Metabolism and Pharmacokinetics - June 21, 2018 Category: Drugs & Pharmacology Tags: Drug Metab Pharmacokinet Source Type: research

Acid-degradable Dextran as an Image Guided siRNA Carrier for COX-2 Downregulation
Conclusions: We successfully developed an efficient method to produce an acid-degradable dextran nanopolymer containing cleavable amine groups as the siRNA carrier. Because of its biocompatibility, this degradable dextran delivered COX-2 siRNA within tumors and efficiently downregulated COX-2 expression.
Source: Theranostics - June 20, 2018 Category: Molecular Biology Authors: Zhihang Chen, Balaji Krishnamachary, Marie-France Penet, Zaver M. Bhujwalla Tags: Research Paper Source Type: research

Receptor-targeted aptamer-siRNA conjugate-directed transcriptional regulation of HIV-1
Gene-based therapies represent a promising therapeutic paradigm for the treatment of HIV-1, as they have the potential to maintain sustained viral inhibition with reduced treatment interventions. Such an option may represent a long-term treatment alternative to highly active antiretroviral therapy.Methods: We previously described a therapeutic approach, referred to as transcriptional gene silencing (TGS), whereby small noncoding RNAs directly inhibit the transcriptional activity of HIV-1 by targeting sites within the viral promoter, specifically the 5' long terminal repeat (LTR). TGS differs from traditional RNA interferen...
Source: Theranostics - June 20, 2018 Category: Molecular Biology Authors: Jiehua Zhou, Daniel Lazar, Haitang Li, Xin Xia, Sangeetha Satheesan, Paige Charlins, Denis O'Mealy, Ramesh Akkina, Sheena Saayman, Marc S. Weinberg, John J. Rossi, Kevin V. Morris Tags: Research Paper Source Type: research

Current Transport Systems and Clinical Applications for Small Interfering RNA (siRNA) Drugs
AbstractSmall interfering RNAs (siRNAs) are an attractive new agent with potential as a therapeutic tool because of its ability to inhibit specific genes for many conditions, including viral infections and cancers. However, despite this potential, many challenges remain, including off-target effects, difficulties with delivery, immune responses, and toxicity. Traditional genetic vectors do not guarantee that siRNAs will silence genes in vivo. Rational design strategies, such as chemical modification, viral vectors, and non-viral vectors, including cationic liposomes, polymers, nanocarriers, and bioconjugated siRNAs, provid...
Source: Molecular Diagnosis and Therapy - June 20, 2018 Category: Molecular Biology Source Type: research