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Dicer in Medical News

Low Levels of 2 Enzymes in Ovarian Cancer Cells Shortened Survival

... The two enzymes examined in this study, dicer (so named because it dices up RNA) and Drosha, ... measured messenger RNA (mRNA) levels of dicer and Drosha in tissue samples from 111 patients ... 60 percent of cancer cells had low levels of the dicer gene, about half had low levels of Drosha, and ...

MicroRNAs appear essential for retinal health

... the forms or alleles of the gene that produces dicer in the retina, scientists were able to observe retinal development when dicer levels were half of normal or completely eliminated. Electrical activity in retinas devoid of dicer was abnormally low at the time of eye opening and ...

JCI online early table of contents: April 8, 2008

... The generation of miRNAs is a complex process that involves a protein known as Dicer. In the study, mice expressing substantially lower levels of dicer than normal mice (Dicerd/d mice) were found to have only one defect the female mice were infertile. Infertility was a result of impaired functioning ...
Dicer in Biological News

October 2008 Biology of Reproduction highlights

... an RNaseIII enzyme, plays a role in the biogenesis of microRNAs; recently there has been a flurry of activity to determine the developmental role of dicer by whole-organism and conditional gene disruptions. In a paper on p. 696 of this issue, Maatouk et al. add important new information to the emerging ...

Advanced genomics and proteomics improve the diagnosis and treatment of a deadly lung disease

... picture of an enzyme known as Dicer. In cells, dicer jumpstarts RNA interference, a process that ... developmental events. With the structure of dicer solved, Doudna's group showed that the enzyme is ... strands of RNA into precise increments. When dicer cleaves large strands of RNA into smaller ...

Molecule does more than slice and dice RNA

... picture of an enzyme known as Dicer. In cells, dicer jumpstarts RNA interference, a process that ... developmental events. With the structure of dicer solved, Doudna's group showed that the enzyme is ... strands of RNA into precise increments. When dicer cleaves large strands of RNA into smaller ...

Twin molecular scissors link creation of microRNAs with gene-silencing

... RNAs. In RISC, two of the three components, dicer and Argonaute 2, are enzymes bound together by the third member, TRBP. dicer cuts double-stranded precursor molecules shaped ... a particular length of its target messenger RNA, dicer and TRBP then hand over the messenger RNA for ...

Micro-molecule plays big role in birth defects

... their jobs, scientists believe an enzyme called dicer must be present. Harfe, who worked in ... modified mice so that scientists could eliminate dicer in specific tissues at any stage in the ... microRNAs in limb development. In cases where dicer is not present in developing limb tissue, Harfe ...

Ancient immune defense mechanism is no match for HIV-1

... also can function as a suppressor of RNA silencing (SRS). Tat helps HIV-1 to elude the cell's natural RNAi defense by interfering with the ability of dicer to process dsRNAs. "Our results suggest that the dynamic interplay between RNAi and SRS remains physiologically conserved from plants and ...
Dicer in Biological Technology

Nastech Assigns Intellectual Property Related to the Development of RNA-Based Therapeutics to its Subsidiary, MDRNA, Inc.

... lipids, and formulations; -- the RNA drug cargo, i.e., RISC and dicer substrate constructs; -- delivery chemistry, both covalent conjugates ... has exclusive and non-exclusive rights under a license in the field of dicer substrates for patent applications owned by City of Hope. -- ...

RNA Interference and Gene Silencing: History and Overview

... RNase that appears to be distinct from dicer (27 ). ... the target mRNA, generating a dsRNA substrate for dicer and thus more siRNAs (dicer (called DCR-1 in C. elegans ). ...

Dicer vs. RNase III for Preparation of siRNA Cocktails

... Both recombinant human dicer and Escherichia coli RNase III can be used in ... effective mediators of gene silencing (1-6). dicer is an endoribonuclease that ... endogenous RNAi pathway. The siRNAs produced by dicer are 21-23 bp in length and ...

RNAi: A How To for New Users

... RNA (dsRNA) triggers the RNAi pathway. The cytoplasmic nuclease dicer first cleaves the long dsRNA into 2123 bp small interfering ... 3. Digestion of long dsRNA in vitro by RNase III or dicer I ntroduction of DNA-based vectors and ...

Inducing RNAi with siRNA Cocktails Generated by RNase III

... in length with termini identical to those produced by dicer (9). The average product length generated by RNase ... within the target gene are generated in vitro by dicer digestion of long dsRNA, which in turn specifically ...

Precursor miRNAs for Successful miRNA Functional Studies

... to the cytoplasm via a process that involves Exportin-5 [2-4]. The pre-miRNA is further cleaved by dicer [5] to generate a short, partially double-stranded (ds) RNA in which one strand is the mature miRNA. The ...

pSilencer 4.1-CMV: Versatile Vectors for Expression of siRNA, miRNA, and mRNA

... Pre-miRNAs are exported to the cytoplasm by an Exportin 5-dependent mechanism where they are processed by dicer to generate mature 21-24 nt miRNAs [1, 2]. To evaluate whether p Silencer 4.1-CMV vectors could express ...

Isolation to Functional Analyses

... pre-miRNA is transported to the cytoplasm via a process that involves Exportin-5 [7,8]. The pre-miRNA is further digested by dicer [6,8] to generate a short, partially double-stranded RNA wherein one strand is the mature miRNA. The mature miRNA is taken up ...

GENE SILENCING WITH PCR PRODUCTS

... to generate a small hairpin siRNA with several U's at the 3' end. The hairpin is thought to be processed by the dsRNA-specific dicer enzyme (2) to generate functional siRNAs, which can enter the RNAi pathway and reduce the expression of a target gene. Figures ...
Dicer in Biological Definition

Reverse genetics

... interfere with the expression of most genes in the genome. While RNA interference relies on systems within the cell for efficacy (e.g. the dicer proteins, the RISC complex) a simple alternative for gene knockdown is Morpholino antisense oligos. While RNAi acts by directing cellular ...
Dicer in Biological Dictionary

Dicer

... dicer is an endoribonuclease in the RNase III family ... data in three or more dimensions. With Slicer dicer you can roam visually through your data, viewing ... image files to assemble a volume in Slicer dicer ? ... Compare Cheap Prices for ...
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