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Updated: Aug 13, 2026

Studying Cell Cycle-regulated Gene Expression by Two Complementary Cell Synchronization Protocols
12:02

Studying Cell Cycle-regulated Gene Expression by Two Complementary Cell Synchronization Protocols

Published on: June 6, 2017

Not So Fast: Cultivating miRs as Kinks in the Chain of the Cell Cycle

Matthew J Schiewer1, Karen E Knudsen2

  • 1Department of Cancer Biology, Thomas Jefferson University, Philadelphia, PA 19107, USA; The Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA.

Cancer Cell
|April 12, 2017
PubMed

Insights

Researchers identified novel cell-cycle-targeting microRNAs that inhibit tumor growth and induce apoptosis. These microRNAs show promise in suppressing chemoresistant cancers and can be predicted using a specific algorithm.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • MicroRNAs (miRNAs) play crucial roles in gene regulation and are implicated in cancer development.
  • Dysregulation of cell cycle progression is a hallmark of cancer, involving proteins like cyclins and cyclin-dependent kinases (CDKs).
  • Chemotherapy resistance remains a significant challenge in cancer treatment, necessitating novel therapeutic strategies.

Purpose of the Study:

  • To identify and characterize a novel class of microRNAs targeting cell cycle regulators.
  • To evaluate the therapeutic potential of these novel miRNAs in reducing tumor growth and inducing apoptosis.
  • To develop a predictive algorithm for miRNA efficacy in chemoresistant cancers.

Main Methods:

  • Identification and validation of novel microRNAs targeting key cell cycle genes (cyclins/CDKs).
  • In vitro assessment of miRNA-induced tumor cell growth inhibition and apoptosis.
  • In vivo evaluation of miRNA efficacy in patient-derived xenograft models of chemoresistant cancer.
  • Development and validation of an expression-based algorithm for predicting miRNA therapeutic response.

Main Results:

  • A novel class of microRNAs, termed "cell-cycle-targeting miRNAs," was defined.
  • These miRNAs effectively target cyclins and CDKs, leading to reduced tumor cell proliferation and increased apoptosis.
  • Significant suppression of chemoresistant patient-derived xenograft growth was observed in vivo.
  • An expression-based algorithm accurately predicted the efficacy of these miRNAs.

Conclusions:

  • Cell-cycle-targeting miRNAs represent a promising new class of therapeutic agents for cancer treatment.
  • These miRNAs demonstrate efficacy against chemoresistant tumors, offering a potential strategy to overcome treatment resistance.
  • Prospective prediction of miRNA efficacy using a developed algorithm can guide clinical application and patient selection.

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