This page shows you your search results in order of relevance. This is page number 9.

Order by Relevance | Date

Total 4468809 results found since Jan 2013.

siRNA-mediated protein knockdown in precision-cut lung slices.
Abstract Small interfering RNA (siRNA) can induce RNA interference, which leads to the knockdown of messenger RNA (mRNA) and protein. As a result, siRNA is often used in vitro and in vivo to unravel the function of genes and as a therapeutic agent to disrupt excessive expression of disease-related genes. However, there is a large gap between in vitro and in vivo models in terms of simplicity, flexibility, throughput, and translatability. This gap could be bridged by using precision-cut tissue slices, which represent viable explants prepared from animal or human tissue that can be cultured ex vivo. Previously, we d...
Source: European Journal of Pharmaceutics and Biopharmaceutics - November 7, 2018 Category: Drugs & Pharmacology Authors: Ruigrok MJR, Xian JL, Frijlink HW, Melgert BN, Hinrichs WLJ, Olinga P Tags: Eur J Pharm Biopharm Source Type: research

Transmigration of Tetraspanin 2 (Tspan2) siRNA Via Microglia Derived Exosomes across the Blood Brain Barrier Modifies the Production of Immune Mediators by Microglia Cells
AbstractMicroglia are implicated in the neuropathogenesis of HIV. Tetraspanin 2 (Tspan2) is closely related to CD9 and CD81 proteins, and are expressed on microglia cells. They have been implicated in cell fusion and adhesion and in the immune response, and neuroinflammation. Developing therapeutics that target microglia remains a challenge as these therapeutics must cross the Blood-Brain Barrier (BBB). Our goal was to use microglia derived exosomes as a vehicle to deliver siRNA across the BBB to target human telomerase reverse transcriptase immortalized human microglial cells (HTHU) latently infected by HIV (HTHU-HIV) and...
Source: Journal of NeuroImmune Pharmacology - December 9, 2019 Category: Drugs & Pharmacology Source Type: research

Inhibition of chemotherapy-related breast tumor EMT by application of redox-sensitive siRNA delivery system CSO-ss-SA/siRNA along with doxorubicin treatment
AbstractMetastasis is one of the main reasons causing death in cancer patients. It was reported that chemotherapy might induce metastasis. In order to uncover the mechanism of chemotherapy-induced metastasis and find solutions to inhibit treatment-induced metastasis, the relationship between epithelial-mesenchymal transition (EMT) and doxorubicin (DOX) treatment was investigated and a redox-sensitive small interfering RNA (siRNA) delivery system was designed. DOX-related reactive oxygen species (ROS) were found to be responsible for the invasiveness of tumor cells in vitro, causing enhanced EMT and cytoskeleton reconstruct...
Source: Journal of Zhejiang University. Science. B. - February 29, 2020 Category: Universities & Medical Training Source Type: research

Effect of pre ‑freezing and saccharide types in freeze‑drying of siRNA lipoplexes on gene‑silencing effects in the cells by reverse transfection.
Effect of pre‑freezing and saccharide types in freeze‑drying of siRNA lipoplexes on gene‑silencing effects in the cells by reverse transfection. Mol Med Rep. 2020 Aug 05;: Authors: Tang M, Hu S, Hattori Y Abstract Our previous study reported that reverse (Rev)‑transfection with small interfering RNA (siRNA)/cationic liposome complexes (siRNA lipoplexes) freeze‑dried in trehalose or sucrose solution resulted in high gene‑silencing activity in cells. The current study investigated whether pre‑freezing or saccharide types present during the freeze‑drying of siRNA lipoplexes affected geneâ€...
Source: Molecular Medicine Reports - September 20, 2020 Category: Molecular Biology Tags: Mol Med Rep Source Type: research

Targeted nanomedicine with anti-EGFR scFv for siRNA delivery into triple negative breast cancer cells.
Abstract A targeted nanomedicine with humanized anti-EGFR scFv (NM-scFv) was developed for siRNA delivery into triple negative breast cancer (TNBC) cells. NM-scFv consisted of i) targeted nanovector (NV-scFv): nano-cargo with targeting properties; ii) siRNA: pharmacological agent and iii) cationic polymers (chitosan, poly-L-arginine): for siRNA complexation and endosomal escape. NV-scFv was based on superparamagnetic nanoparticle (SPION) labeled with DylightTM680, a PEG layer and a humanized anti-EGFR scFv. The PEG density was optimized from 236±3 to 873±4 PEGs/NV-scFv and the number of targeting ligands per NV-...
Source: European Journal of Pharmaceutics and Biopharmaceutics - October 12, 2020 Category: Drugs & Pharmacology Authors: Vinh Nguyen P, Hervé-Aubert K, David S, Lautram N, Passirani C, Chourpa I, Aubrey N, Allard-Vannier E Tags: Eur J Pharm Biopharm Source Type: research

GSE194248 Human prostate cancer cells (VCaP and AIVCaP): siAR alone (single siRNA) vs. siAR plus OPRK1 (combo-siRNA)
Contributors : Yuki Makino ; Takashi KobayashiSeries Type : Expression profiling by arrayOrganism : Homo sapiensThrough comparative genomics using PDX models of androgen-dependent (AD) and castration-resistant (CR) tumors, we identify opioid receptor kappa 1 (OPRK1) as being associated with castration-resistance. Loss of OPRK1 function delays castration-resistance and inhibits castration-resistant growth of prostate cancer cells in culture and in vivo, suggesting OPRK1 as a therapeutic target.To gain insight with regard to biological function of OPRK1 under androgen-depleted condition, we set up two distinct comparisons us...
Source: GEO: Gene Expression Omnibus - April 3, 2022 Category: Genetics & Stem Cells Tags: Expression profiling by array Homo sapiens Source Type: research

Effect of the combination of cationic lipid and phospholipid on gene-knockdown using siRNA lipoplexes in breast tumor cells and mouse lungs
Mol Med Rep. 2023 Oct;28(4):180. doi: 10.3892/mmr.2023.13067. Epub 2023 Aug 18.ABSTRACTPreviously, using three types of cationic lipids, the effect of phospholipids in liposomal formulations on gene-knockdown efficacy was determined after in vitro and in vivo transfection with small interfering RNA (siRNA)/cationic liposome complexes (siRNA lipoplexes) containing various cationic lipids and phospholipids. In the present study, six other types of cationic lipids, namely N,N-dimethyl-N-tetradecyltetradecan-1-aminium bromide, N-hexadecyl-N,N-dimethylhexadecan-1-aminium bromide (DC-1-16), 2-[bis{2-(tetradecanoyloxy)ethyl}amino...
Source: Molecular Medicine Reports - August 18, 2023 Category: Molecular Biology Authors: Yoshiyuki Hattori Min Tang Aya Aoki Momoka Ezaki Hana Sakai Kei-Ichi Ozaki Source Type: research

Comparative cellular pharmacokinetics and pharmacodynamics of siRNA delivery by SPANosomes and by cationic liposomes
Abstract: Mechanistic understanding of intracellular trafficking is important for the development of small interfering RNA (siRNA) delivery vehicles. Here, we describe a novel methodology to quantitatively analyze nanocarrier-mediated disposition of siRNA. Cellular uptake and cytoplasmic release of siRNA over time were quantified by measuring the fluorescence intensities of fluorescently-labeled siRNAs and molecular beacons using flow cytometry. This method was used to investigate the cellular pharmacokinetics (PK) of siRNA delivery by SPANosomes (SP) and by cationic liposomes (CL). The results showed that the superior pha...
Source: Nanomedicine : Nanotechnology, Biology, and Medicine - October 31, 2012 Category: Nanotechnology Authors: Chenguang Zhou, Yue Zhang, Bo Yu, Mitch A. Phelps, L. James Lee, Robert J. Lee Tags: Pharmaceutics, siRNA Delivery, PKPD, Liposomes Source Type: research

Prolonged efficiency of siRNA-mediated gene silencing in primary cultures of human preadipocytes and adipocytes.
CONCLUSIONS: Our study describes the methods of gene silencing in primary cultures of human preadipocytes and adipocytes and their prolonged effectiveness. PMID: 24307633 [PubMed - as supplied by publisher]
Source: Obesity - December 5, 2013 Category: Eating Disorders and Weight Management Authors: Lee MJ, Pickering RT, Puri V Tags: Obesity (Silver Spring) Source Type: research

i-Fect Delivers siRNA in vitro and in vivo
In this study data suggest the protective effects of EPO on NUV injuries are highly associated with the increase of p-Cx43, which improves GJIC to reduce neurotoxic substances: Ziyi Zhoua, Xiaobai Weib, Jun Xiang, Junpeng Gao, Lixin Wang, Jinsong You, Yefeng Cai , Dingfang Caid. Protection of erythropoietin against ischemic neurovascular unit injuries through the effects of connexin43. Biochemical and Biophysical Research Communications. doi:10.1016/j.bbrc.2015.02...The strands were incubated at 90°C for 5 min and then at 37°C for 1 h. SiRNA was prepared immediately before administration by mixing the RNA solution (1 μg...
Source: Neuromics - February 21, 2015 Category: Neuroscience Tags: Cerebral Ischemia Connexin 43 Delivering siRNA to the CNS EPO HDAC2 i-Fect Stroke Source Type: news

Designing idiosyncratic hmPCL-siRNA Nanoformulated Capsules for Silencing and Cancer Therapy
Publication date: Available online 10 November 2015 Source:Nanomedicine: Nanotechnology, Biology and Medicine Author(s): Vijay Bhooshon Kumar, Himadri Medhi, Zhang Yong, Pradip Paik In this work, we have designed a siRNA-nanoformulation with mesoporous polycaprolactone (hmPCL) for silencing and cancer therapy. Average hollow core size of hmPCL nanocapsules used for nanoformulation is ~180 nm with shell thickness of 10-20 nm and mesopore size of ~5-10 nm in diameter. Idiosyncratic capsules are biocompatible which has been confirmed with normal lymphocyte, K562 leukaemia cancer cells and on HepG2/EGFP cancer cells. In ...
Source: Nanomedicine: Nanotechnology, Biology and Medicine - November 10, 2015 Category: Nanotechnology Source Type: research