MicroRNA-mediated regulation of KRAS in cancer

Minlee Kim1,2, Frank J Slack3

  • 1Department of Molecular, Cellular and Developmental Biology, Yale University, PO Box 208103, New Haven, CT, 06511, USA. minlee.kim@yale.edu.

Insights

MicroRNAs (miRNAs) regulate the KRAS oncogene in cancer. Recent studies explore how miRNAs control KRAS and how genetic variations impact this regulation, offering new insights into cancer mechanisms.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • MicroRNAs (miRNAs) and the KRAS oncogene are frequently dysregulated in various cancers.
  • The specific role of miRNAs in regulating KRAS within the context of cancer remains incompletely understood.

Purpose of the Study:

  • To review recent studies (2014) elucidating the molecular mechanisms by which miRNAs regulate KRAS in cancer.
  • To examine the clinical relevance of sequence variants affecting miRNA-mediated KRAS regulation.

Main Methods:

  • Literature review of studies published in 2014 focusing on miRNA-KRAS interactions in cancer.
  • Analysis of molecular mechanisms and genetic variations impacting miRNA-mediated KRAS regulation.

Main Results:

  • Identified key molecular pathways through which specific miRNAs influence KRAS expression and function.
  • Highlighted the significance of sequence variants in miRNAs or their targets that can alter KRAS regulation.
  • Connected these regulatory mechanisms to potential clinical implications in cancer treatment and prognosis.

Conclusions:

  • miRNA-mediated regulation of KRAS is a critical factor in cancer development and progression.
  • Understanding these interactions and associated genetic variations is essential for developing targeted cancer therapies.
  • Further research into miRNA-KRAS pathways holds promise for novel diagnostic and therapeutic strategies.

Related Concept Videos

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...
7.6K
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
5.2K
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

1.8K
MicroRNAs01:22

MicroRNAs

MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
4.4K
MicroRNAs01:22

MicroRNAs

MicroRNA (miRNA) are short, regulatory RNA transcribed from introns—non-coding regions of a gene—or intergenic regions—stretches of DNA present between genes. Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After...
25.2K
MicroRNAs01:22

MicroRNAs

12.1K