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Techniques to Induce and Quantify Cellular Senescence
06:51

Techniques to Induce and Quantify Cellular Senescence

Published on: May 1, 2017

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Rn7SK small nuclear RNA is involved in cellular senescence

Maryam Musavi1,2, Fatemeh Kohram3, Mozhgan Abasi2,4

  • 1Department of Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Journal of Cellular Physiology
|January 15, 2019
PubMed

Insights

The small nuclear noncoding RNA Rn7SK influences cell aging. Its downregulation delays senescence in mesenchymal stem cells, while overexpression accelerates it, offering potential for regenerative medicine.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Aging Research

Background:

  • The function of the conserved small nuclear noncoding RNA Rn7SK in aging remains largely uncharacterized.
  • Previous studies indicated Rn7SK overexpression reduces cell viability and is downregulated in various cancer and stem cell contexts.

Purpose of the Study:

  • To investigate the role of Rn7SK in cellular senescence.
  • To analyze the impact of Rn7SK modulation on adipose tissue-derived mesenchymal stem cells (AD-MSCs).

Main Methods:

  • Manipulated Rn7SK expression in AD-MSCs using transfection (downregulation) and transduction (upregulation).
  • Assessed senescence hallmarks: cell viability, proliferation, colony formation, and senescence-associated β-galactosidase activity.
  • Evaluated the effect on osteogenic differentiation potential.

Main Results:

  • Transient knockdown of Rn7SK expression in AD-MSCs resulted in delayed senescence.
  • Overexpression of Rn7SK led to accelerated senescence.
  • AD-MSCs with altered Rn7SK expression showed enhanced osteogenic differentiation potential.

Conclusions:

  • Rn7SK plays a significant role in regulating cellular senescence in AD-MSCs.
  • Modulating Rn7SK offers a potential strategy for enhancing stem cell differentiation for regenerative medicine applications.
Keywords:
Rn7SKagingmesenchymal stem cellsnoncoding RNAssenescence

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