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Updated: Mar 8, 2026

Looking for Driver Pathways of Acquired Resistance to Targeted Therapy: Drug Resistant Subclone Generation and Sensitivity Restoring by Gene Knock-down
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Looking for Driver Pathways of Acquired Resistance to Targeted Therapy: Drug Resistant Subclone Generation and Sensitivity Restoring by Gene Knock-down

Published on: December 11, 2017

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Novel Mechanisms of Resistance to Investigational Molecularly Targeted Drugs

Kohji Noguchi1

  • 1Division of Chemotherapy, Faculty of Pharmacy, Keio University.

Yakugaku Zasshi : Journal of the Pharmaceutical Society of Japan
|February 4, 2017
PubMed

Insights

Drug resistance in cancer therapies can be overcome by targeting bypass mechanisms. This study reveals novel ways cancer cells evade anti-mitotic kinase inhibitors, suggesting new combination chemotherapy strategies.

Area of Science:

  • Oncology
  • Molecular Biology
  • Pharmacology

Background:

  • Drug resistance is a major challenge in targeted cancer therapy.
  • Mechanisms include target alteration, pro-survival pathway activation, and impaired cell death.
  • Understanding condition-dependent resistance is crucial for precision medicine.

Purpose of the Study:

  • To investigate molecular mechanisms of anti-cancer drug resistance.
  • To analyze resistant cells against anti-mitotic kinase inhibitors.
  • To identify novel resistance mechanisms and potential therapeutic targets.

Main Methods:

  • Analysis of original resistant cancer cell lines.
  • Investigation of cellular responses to anti-mitotic kinase inhibitors.
  • Characterization of cytokinetic and apoptotic pathways.

Main Results:

  • Novel mechanisms were identified that reduce cytokinetic dysregulation.
  • Anti-apoptotic activities were associated with resistant phenotypes.
  • Activation of bypass pathways allows cancer cells to evade targeted drug effects.

Conclusions:

  • Cancer cells employ bypass mechanisms to resist targeted therapies.
  • These bypass mechanisms are critical targets for combination chemotherapy.
  • Overcoming non-genetic drug resistance requires targeting these evasion strategies.

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