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Total 3372 results found since Jan 2013.

Silencing Estrogen Receptor- & beta; with siRNA in Cultured Cells
Estrogen receptors & alpha; and & beta; (ER & alpha; and ER & beta;) are the two genomic estrogen receptors. ER & beta; was the second of these receptors to be discovered; its structure is similar to that of ER & alpha; but they are different in histological distribution. However, the functions of ER & alpha; versus ER & beta; are still unclear. The ability of small interfering RNAs (siRNAs) to silence gene expression has proven to be invaluable for studying gene function in cultured mammalian cells. This chapter describes the use of siRNA to inhibit the expression of ER & beta; in renal cell carcinoma (RCC) and to further...
Source: Springer protocols feed by Biochemistry - October 11, 2015 Category: Biochemistry Source Type: news

Validation of a network-based strategy for the optimization of combinatorial target selection in breast cancer therapy: siRNA knockdown of network targets in MDA-MB-231 cells as an in vitro model for inhibition of tumor development.
Authors: Tilli TM, Carels N, Tuszynski JA, Pasdar M Abstract Network-based strategies provided by systems biology are attractive tools for cancer therapy. Modulation of cancer networks by anticancer drugs may alter the response of malignant cells and/or drive network re-organization into the inhibition of cancer progression. Previously, using systems biology approach and cancer signaling networks, we identified top-5 highly expressed and connected proteins (HSP90AB1, CSNK2B, TK1, YWHAB and VIM) in the invasive MDA-MB-231 breast cancer cell line. Here, we have knocked down the expression of these proteins, individua...
Source: Oncotarget - August 18, 2016 Category: Cancer & Oncology Tags: Oncotarget Source Type: research

siRNA Targeting Net1 Reduces the Angiogenesis and Tumor Growth of in vivo Cervical Squamous Cell Carcinoma through VEGF down-regulation
Net1, a guanine nucleotide exchange factor, is implicated in cancer cell invasion through activation of RhoA. However, there is still no report on the association between Net1 and cancer angiogenesis. The current study was designed to explore the roles of Net1 in the angiogenesis of cervical squamous cell carcinoma (CSCC) and further observe the effects of Net1 siRNA on the tumor growth. Net1 was overexpressed in CSCC samples (n=80), correlated to the cancer microvessel density (MVD, r=0.223, P=.026) and related to aggressive clinical behaviors, including depth of cervical wall invasion (P=.041), parametrial involvement (P...
Source: Human Pathology - May 13, 2017 Category: Pathology Authors: Yuting Zhang, Pei Xia, Wenhui Zhang, Min Yan, Xiujuan Xiong, Weiwei Yu, Enlin Song Tags: Original contribution Source Type: research

GSE100589 Gene expression profiling of SAS cell line transfected with siRNA targeting CYLD
Contributors : Satoru Shinriki ; Hirofumi JonoSeries Type : Expression profiling by arrayOrganism : Homo sapiensOral squamous cell carcinoma (OSCC) has a very poor prognosis due to its highly invasive nature, and 5-year survival rate has not changed apparently for the past 30 years. Although cylindromatosis (CYLD) is thought as a potent tumor suppressor, its biological and clinical significances in OSCC are largely unknown. The aim of this study was to clarify roles of CYLD in OSCC progression. Our immunohistochemical analyses revealed that CYLD expression was significantly reduced at invasive lesions in OSCC tissues where...
Source: GEO: Gene Expression Omnibus - June 29, 2017 Category: Genetics & Stem Cells Tags: Expression profiling by array Homo sapiens Source Type: research

CD-PLLD co-delivering docetaxel and MMP-9 siRNA plasmid for nasopharyngeal carcinoma therapy in  vivo.
CD-PLLD co-delivering docetaxel and MMP-9 siRNA plasmid for nasopharyngeal carcinoma therapy in vivo. Mol Med Rep. 2017 Jun 07;: Authors: Liu T, Wu X, Wang Y, Hou X, Jiang G, Wu T, Xie H, Xie M Abstract The co-delivery of a drug and a target gene has become a primary strategy in cancer therapy. Based on our previous study, a synthesized star‑shaped co‑polymer consisting of β‑cyclodextrin (CD) and a poly(L‑lysine) dendron (PLLD) was used to co-deliver docetaxel (DOC) and matrix metalloproteinase 9 (MMP‑9) small interfering RNA, via CD‑PLLD/DOC/MMP‑9 complexes, into mice implanted with HN...
Source: Molecular Medicine Reports - October 29, 2017 Category: Molecular Biology Tags: Mol Med Rep Source Type: research

Antitumor activity of kinetochore-associated protein 2 siRNA against lung cancer patient-derived tumor xenografts.
Authors: Makita Y, Teratani M, Murata S, Hoashi Y, Matsumoto S, Kawamata Y Abstract It has been widely reported that patient-derived tumor xenografts (PDXs) are more similar to tumor tissues than conventional cancer cell lines. Kinetochore-associated protein 2 (KNTC2) is known to be upregulated specifically in tumor tissues of cancer patients and is recognized as a potential target for cancer therapy. Previously, in vivo antitumor activities of KNTC2 short interfering RNA encapsulated into a lipid nanoparticle (KNTC2-LNP) were reported in orthotopic hepatocellular carcinoma mouse models. However, it remains unclear...
Source: Oncology Letters - March 16, 2018 Category: Cancer & Oncology Tags: Oncol Lett Source Type: research

Tip60-siRNA regulates ABCE1 acetylation to suppress lung cancer growth via activation of the apoptotic signaling pathway.
Authors: Liang Z, Yu Q, Ji H, Tian D Abstract Lung cancer is a leading cause of cancer-associated mortality and morbidity worldwide. Previous studies have suggested that ATP-binding cassette transporter E1 (ABCE1) acetylation is upregulated in the tissues and cells of lung cancer and is associated with the prognosis of patients with lung cancer. The aim of the present study was to investigate the association between Tat interactive protein 60 kDa (Tip60) expression and ABCE1 acetylation, and the effect of Tip60 on the biological functions of A549 lung carcinoma cells. The expression levels of Tip60 and ABCE1 acetyl...
Source: Experimental and Therapeutic Medicine - April 4, 2019 Category: General Medicine Tags: Exp Ther Med Source Type: research

TonEBP Suppresses the HO-1 Gene by Blocking Recruitment of Nrf2 to Its Promoter
Discussion Dynamic changes in the functional phenotype of macrophages are associated with pathogenesis of inflammatory diseases (5–7). TonEBP primes macrophages toward an M1 phenotype, which has pro-inflammatory properties. TonEBP does this by promoting expression of pro-inflammatory genes via interaction with NF-κB (36) and by binding directly to the promoter (37, 64). In addition, TonEBP suppresses expression of the anti-inflammatory cytokine IL-10 by limiting chromatin access to the promoter (37). The pro-inflammatory function of TonEBP suggests that inhibiting its expression or activation could suppres...
Source: Frontiers in Immunology - April 17, 2019 Category: Allergy & Immunology Source Type: research

Inhibition of SMYD2 Sensitized Cisplatin to Resistant Cells in NSCLC Through Activating p53 Pathway
In conclusion, the present study elucidated that the activity of SMYD2 in NSCLC may affect the cell sensitivity to chemotherapeutic agents, especially to CDDP. The elevated SMYD2 mediated CDDP resistance and malignant phenotype in NSCLC, indicating that SMYD2 may be a useful biomarker of CDDP resistance in NSCLC. Inhibition of SMYD2 contributes to the methylation-related activation of p53 and thus results in cell apoptosis. Furthermore, combination treatment with CDDP and an SMYD2 inhibitor had a synergistically antitumor effects in a xenograft model in vivo. Given that SMYD2 has reversible effects and is a targetable prot...
Source: Frontiers in Oncology - April 25, 2019 Category: Cancer & Oncology Source Type: research

Regulation of Chromatin Assembly and Cell Transformation by Formaldehyde Exposure in Human Cells
Conclusions: We propose that the inhibition of chromatin assembly represents a novel mechanism of cell transformation induced by the environmental and occupational chemical carcinogen FA. https://doi.org/10.1289/EHP1275 Received: 25 October 2016 Revised: 19 May 2017 Accepted: 23 May 2017 Published: 21 September 2017 Address correspondence to C. Jin, Dept. of Environmental Medicine, New York University School of Medicine, 57 Old Forge Rd., Tuxedo Park, NY 10987 USA. Telephone: (845) 731-3602. Email: Chunyuan.jin@nyumc.org *Current affiliation: Medical School of Nanjing University, Nanjing, China. †Current affiliatio...
Source: EHP Research - September 21, 2017 Category: Environmental Health Authors: Daniil Lyalko Tags: Research Source Type: research

Inhibition of skin squamous cell carcinoma proliferation and promote apoptosis by dual silencing of NET-1 and survivin.
Authors: Ji ZJ, Wang JL, Chen L Abstract The simultaneous silencing of multiple upregulated genes is an attractive and viable strategy to treat many incurable diseases including cancer. In the present study, skin squamous cell carcinoma (SSCC) tissue microarray was constructed and the expression of NET-1 and survivin was identified. The high expression of NET-1 and survivin gene in SSCC was confirmed as an important event for the formation and development of the cancer. A total of 100 primary SSCC patients were included in the present study. Expression of NET-1 and survivin in cancer cells was evaluated immunohist...
Source: Oncology Reports - June 20, 2015 Category: Cancer & Oncology Tags: Oncol Rep Source Type: research

Endothelial Cell-Derived TGF- β Promotes Epithelial-Mesenchymal Transition via CD133 in HBx-Infected Hepatoma Cells
Conclusion: The study indicates that secretory factors like TGF-β from neighboring endothelial cells may enhance expression of CD133 and impart an aggressive EMT phenotype to HBx-infected hepatoma cells in HBV induced HCC. Introduction Hepatocellular Carcinoma (HCC) is one of the most common cancer worldwide, representing approximately 4% of all malignancies (1). It has been estimated that more than 50% of HCC cases in the world are associated with hepatitis B virus (HBV) (2). HBV is a partially double stranded DNA virus belonging to the Hepadnavirus family. The HBV genome is 3.2 kb in size and contains fou...
Source: Frontiers in Oncology - April 23, 2019 Category: Cancer & Oncology Source Type: research

Effects of silencing PTTG expression by small interference RNA.
CONCLUSIONS: Recombinant small interference RNA (siRNA) expression vector targeting PTTG successfully inhibited the cell proliferation and induced apoptosis in endometrial carcinoma cells and increased the cancer cells vulnerability to the effects of radiation. PMID: 27424983 [PubMed - in process]
Source: European Review for Medical and Pharmacological Sciences - July 21, 2016 Category: Drugs & Pharmacology Tags: Eur Rev Med Pharmacol Sci Source Type: research

ARID1A gene silencing reduces the sensitivity of ovarian clear cell carcinoma to cisplatin.
Authors: Lyu C, Zhang Y, Zhou X, Lang J Abstract In ovarian clear cell carcinoma (OCCC), the mutation rate of the AT-rich interaction domain 1A (ARID1A) gene is 46-57%. However, the effects of ARID1A gene silencing by small interfering RNA (siRNA) on the sensitivity of OCCC to cisplatin have not been investigated. Thus, this study aimed to elucidate the association between ARID1A gene silencing and drug resistance in OCCC. Three pairs of ARID1A gene siRNA fragments (siRNA-1, siRNA-2 and siRNA-3) were designed and transiently transfected into ES2 OCCC cells using RNAi Max reagent. Western blotting results demonstrat...
Source: Experimental and Therapeutic Medicine - January 22, 2017 Category: Journals (General) Tags: Exp Ther Med Source Type: research

HDAC inhibition activates the apoptosome via Apaf1 upregulation in hepatocellular carcinoma
Conclusions The present data show that siRNA-knockdown of HDAC1–3 plays a major role in mediating apoptotic response to HDAC inhibitors through regulation of Apaf1.
Source: European Journal of Medical Research - June 23, 2016 Category: Research Source Type: research