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Related Concept Videos

Rous Sarcoma Virus (RSV) and Cancer01:03

Rous Sarcoma Virus (RSV) and Cancer

Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
RSV is a retrovirus that contains two copies of a plus-strand  RNA genome. Its genome consists of four main open...
Rous Sarcoma Virus (RSV) and Cancer01:03

Rous Sarcoma Virus (RSV) and Cancer

Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
RSV is a retrovirus that contains two copies of a plus-strand  RNA genome. Its genome consists of four main open...
The Ras Gene02:38

The Ras Gene

The Ras-gene-encoded proteins are regulators of signaling pathways controlling cell proliferation, differentiation, or cell survival. The Ras-gene family in humans constitutes three primary members—the HRas, NRas, and KRas. These genes code for four functionally distinct yet closely related proteins—the HRas, NRas, KRas4A, and KRas4B. The involvement of mutant Ras genes in human cancer was first discovered in 1982 and is among the most common causes of human tumorigenesis.
Ras is a superfamily...
Mechanisms of Retrovirus-induced Cancers01:51

Mechanisms of Retrovirus-induced Cancers

Retroviruses are RNA viruses that have been shown to cause cancers in diverse species, including chickens, mice, cats, and monkeys. The RNA genomes of these viruses are first reverse-transcribed into single and then double-stranded DNA (dsDNA) copies. This dsDNA called proviral DNA then integrates into the host genome. Subsequently, the host cell transcribes the proviral DNA in concert with the chromosomal DNA. This leads to the production of viral RNA and proteins that assemble at the host...
Mechanisms of Retrovirus-induced Cancers01:51

Mechanisms of Retrovirus-induced Cancers

Retroviruses are RNA viruses that have been shown to cause cancers in diverse species, including chickens, mice, cats, and monkeys. The RNA genomes of these viruses are first reverse-transcribed into single and then double-stranded DNA (dsDNA) copies. This dsDNA called proviral DNA then integrates into the host genome. Subsequently, the host cell transcribes the proviral DNA in concert with the chromosomal DNA. This leads to the production of viral RNA and proteins that assemble at the host...
Experimental RNAi02:15

Experimental RNAi

RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...

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Effects of Chromatin Structure Modifiers on the trans-Acting Heterochromatin Position Effect in Drosophila melanogaster.

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Related Experiment Video

Updated: Jul 3, 2026

Dual CRISPR-Interference Strategy for Targeting Synthetic Lethal Interactions Between Non-Coding RNAs in Cancer Cells
07:23

Dual CRISPR-Interference Strategy for Targeting Synthetic Lethal Interactions Between Non-Coding RNAs in Cancer Cells

Published on: May 30, 2025

Small RNAs and cancerogenesis.

S S Ryazansky1, V A Gvozdev

  • 1Institute of Molecular Genetics, Russian Academy of Sciences, Moscow 123182, Russia. ryazansky@img.ras.ru

Biochemistry. Biokhimiia
|July 9, 2008
PubMed
Summary

Dysfunctional microRNAs and short interfering RNAs (siRNA) are key indicators in cancer development and progression. These molecules influence gene expression and epigenomic modifications, offering new diagnostic and therapeutic targets in cancer epigenomics.

Area of Science:

  • Molecular Biology
  • Cancer Research
  • Epigenetics

Background:

  • MicroRNAs (miRNAs) regulate gene expression post-transcriptionally.
  • Aberrant miRNA expression is a hallmark of various cancers.
  • Short interfering RNAs (siRNAs) are involved in gene silencing and chromatin modification.

Purpose of the Study:

  • To review the role of microRNA disturbances in cancer.
  • To highlight the involvement of short interfering RNA (siRNA) in cancer epigenomics and chromatin structure.
  • To discuss future directions in cancer epigenomics focusing on siRNA-mediated modifications.

Main Methods:

  • Literature review of studies on microRNA and siRNA in cancer.
  • Analysis of the functional roles of these small RNAs in gene regulation and epigenetics.

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CRISPR Gene Editing Tool for MicroRNA Cluster Network Analysis
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CRISPR Gene Editing Tool for MicroRNA Cluster Network Analysis

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Last Updated: Jul 3, 2026

Dual CRISPR-Interference Strategy for Targeting Synthetic Lethal Interactions Between Non-Coding RNAs in Cancer Cells
07:23

Dual CRISPR-Interference Strategy for Targeting Synthetic Lethal Interactions Between Non-Coding RNAs in Cancer Cells

Published on: May 30, 2025

CRISPR Gene Editing Tool for MicroRNA Cluster Network Analysis
10:40

CRISPR Gene Editing Tool for MicroRNA Cluster Network Analysis

Published on: April 25, 2022

  • Synthesis of current knowledge on siRNA's impact on chromatin structure and cancer transformation.
  • Main Results:

    • Disturbances in microRNA generation and function are specific diagnostic features of cancer.
    • Short interfering RNA (siRNA) plays a role in modifying epigenomic chromatin structure, potentially leading to cancer transformation.
    • siRNA's involvement in epigenomic modification is a critical area for future cancer epigenomics research.

    Conclusions:

    • MicroRNAs are crucial regulators whose dysregulation signifies cancer.
    • siRNA-mediated epigenomic modifications represent a significant mechanism in cancer development.
    • Targeting siRNA pathways in epigenomics offers promising avenues for future cancer diagnostics and therapeutics.