Navigation Links
RNA Interference and Gene Silencing: History and Overview

n factor, eIF2a, leading to repression of translation. (39) In the other pathway, long dsRNAs activate RNase L, which leads to nonspecific RNA degradation (40).

A number of groups have shown that the dsRNA-induced antiviral response is absent from mouse embryonic stem (ES) cells and at least one cell line of embryonic origin. (41, 42) It is therefore possible to use long dsRNAs to silence specific genes in these specific mammalian cells. However, the antiviral response precludes the use of long dsRNAs to induce RNAi in most other mammalian cell types.

siRNAs Bypass the Antiviral Response
Interestingly, dsRNAs less than 30 nt in length do not activate the PKR kinase pathway. This observation, as well as knowledge that long dsRNAs are cleaved to form siRNAs in worms and flies and that siRNAs can induce RNAi in Drosophila embryo lysates, prompted researchers to test whether introduction of siRNAs could induce gene-specific silencing in mammalian cells (43). Indeed, siRNAs introduced by transient transfection were found to effectively induce RNAi in mammalian cultured cells in a sequence-specific manner. The effectiveness of siRNAs varies the most potent siRNAs result in >90% reduction in target RNA and protein levels (44-46). The most effective siRNAs turn out to be 21 nt dsRNAs with 2 nt 3' overhangs. Sequence specificity of siRNA is very stringent, as single base pair mismatches between the siRNA and its target mRNA dramatically reduce silencing (44, 47). Unfortunately, not all siRNAs
'"/>

Source:


Page: All 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Related biology technology :

1. More siRNA Vectors for RNA Interference
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: RNA Interference and Gene Silencing History and Overview

(Date:5/22/2013)... May 22, 2013 Industry leaders ... VA for the Oak Ridge National Laboratory’s ... take place at the Hilton Alexandria Mark Center. ... Technologies 2013 conference on June 18 - ... , AdSave, American Elements, Applied Research Associates, ARA, ...
(Date:5/22/2013)... BUFFALO, N.Y. , May 22, 2013 /PRNewswire/ ... exclusive license for a patent pending novel genomic ... a molecular diagnostic test that could help in ... (NEPC) prostate cancer.  Neuroendocrine prostate ... adenocarcinoma (PCA) that can arise de novo, but ...
(Date:5/22/2013)... AudioNotch is the ... treatment. AudioNotch is pleased to announce a partnership ... in both British Columbia and Alberta, Destination Hearing ... services. AudioNotch's tinnitus treatment program is now available ... Destination Hearing clinic, patients have the detection of ...
(Date:5/22/2013)... 22, 2013 A recent study from ... athletes to find that those who took probiotics were able ... from the study showed that in extreme heat conditions, probiotics ... their adult acne treatment explains what this new ... may help their skin condition. , While researchers tote ...
Breaking Biology Technology:Biodetection Technologies 2013 and Oak Ridge National Lab’s Biosurveillance Symposium to Bring Together Leading Organizations in Alexandria, VA from June 17-19, 2013 2Biodetection Technologies 2013 and Oak Ridge National Lab’s Biosurveillance Symposium to Bring Together Leading Organizations in Alexandria, VA from June 17-19, 2013 3Biodetection Technologies 2013 and Oak Ridge National Lab’s Biosurveillance Symposium to Bring Together Leading Organizations in Alexandria, VA from June 17-19, 2013 4Biodetection Technologies 2013 and Oak Ridge National Lab’s Biosurveillance Symposium to Bring Together Leading Organizations in Alexandria, VA from June 17-19, 2013 5Empire Genomics Licenses Novel DNA Biomarker for Use in Diagnosing and Creating a Companion Diagnostic Test for Neuroendocrine Prostate Cancer 2AudioNotch Tinnitus Treatment Launches Partnership With Destination Hearing 2Adult Acne Treatment, Probiotic Action Shares Insight on New Findings Between Probiotics and Heat Tolerance, and What It Means for Acne Sufferers 2
... WASHINGTON, June 15 Congressional Quarterly presents a 360-degree ... of follow-on versions of biotech drugs. This CQ Forum ... interest groups, and leading researchers regarding the complex structures ... possible? Will the availability of these products save money ...
... ADVENTRX Pharmaceuticals, Inc. (NYSE Amex: ANX ) ... of shares of convertible preferred stock pursuant to a registered ... of approximately $2 million. The preferred stock is convertible into ... investor at a price of $0.1105 per share. , ...
... Zentaris Inc. (NASDAQ: AEZS ; TSX: AEZ), ... oncology, today reported that patient follow-up in the open-label ... in benign prostatic hyperplasia (BPH) with its lead endocrinology ... the end of this week. Therefore, data analysis and ...
Cached Biology Technology:ADVENTRX Pharmaceuticals Announces Closing of Financing 2ADVENTRX Pharmaceuticals Announces Closing of Financing 3AEterna Zentaris to Report Data from Safety Study of Phase 3 Program in Benign Prostatic Hyperplasia with Cetrorelix Ahead of Schedule 2AEterna Zentaris to Report Data from Safety Study of Phase 3 Program in Benign Prostatic Hyperplasia with Cetrorelix Ahead of Schedule 3AEterna Zentaris to Report Data from Safety Study of Phase 3 Program in Benign Prostatic Hyperplasia with Cetrorelix Ahead of Schedule 4AEterna Zentaris to Report Data from Safety Study of Phase 3 Program in Benign Prostatic Hyperplasia with Cetrorelix Ahead of Schedule 5
(Date:5/22/2013)... Calif., May 22, 2013 Early screening for prostate ... pregnancy testing is for women, thanks to UC Irvine ... American Chemical Society . , After more than a ... way to clearly identify clinically usable markers for prostate ... detected far sooner, with greater accuracy and at dramatically ...
(Date:5/21/2013)... monitoring" device attached to a whale entangled in fishing ... lines changed a whale,s diving and swimming behavior. The ... eat and migrate, depletes their energy as they drag ... a slow death. , The scientists in this entanglement ... a two-year-old female North Atlantic right whale called Eg ...
(Date:5/21/2013)... that a class of pharmaceuticals can both prevent and ... known as "TSPO ligands," are currently used for certain ... of TSPO ligand in young adult mice when pathology ... when pathology was quite severe," said lead researcher Christian ... ligand reduced measures of pathology and improved behavior at ...
Breaking Biology News(10 mins):UCI chemists devise inexpensive, accurate way to detect prostate cancer 2UCI chemists devise inexpensive, accurate way to detect prostate cancer 3Study reveals how fishing gear can cause slow death of whales 2Study reveals how fishing gear can cause slow death of whales 3Drugs found to both prevent and treat Alzheimer's disease in mice 2
... Researchers at the Umeå Plant Science Centre at the Swedish ... in our understanding of how plants control their flowering. In ... they show how a small molecule that is formed in ... it induces the formation of flowers. This knowledge can lead ...
... you burned your finger on a hot stove? Imagine what ... or feet all the time and know there's virtually nothing ... neuropathic pain, and it's a common complication of many diseases ... this type of pain, which is caused by damage to ...
... the University of Chicago and Argonne National Laboratory ... to study the relationship between biochemical fluctuations within ... it interacts with other cells and its environment. ... in cancer research, drug development and combating bioterrorism. ...
Cached Biology News:Long-sought flower-inducing molecule found 2Scientists use gene transfer technology and common virus to block neuropathic pain in animals 2Scientists use gene transfer technology and common virus to block neuropathic pain in animals 3Scientists use gene transfer technology and common virus to block neuropathic pain in animals 4Scientists use gene transfer technology and common virus to block neuropathic pain in animals 5Scientists create digital bacteria to forge advances in biomedical research 2Scientists create digital bacteria to forge advances in biomedical research 3
Candida (IgG) -Ab EIA Sample Size: 5 l...
Automated centrifuge for the processing of microplates and tubes; can be integrated into automated process using inexpensive robotics due to its unique sample handling platform....
OptiBuffer is a fully optimised medium, designed for,the electroporation of eukaryotic cells. OptiBuffer,improves both transfection efficiencies and survival,rates over PBS or other standard culture...
...
Biology Products: