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In Vitro Assays for Screening Small Molecules

Ashley A Adile1,2, David Bakhshinyan1,2, Chitra Venugopal3,4

  • 1McMaster Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON, Canada.

Methods in Molecular Biology (Clifton, N.J.)
|October 17, 2018
PubMed

Insights

Cancer stem cells (CSCs) evade traditional therapies, driving relapse. New assays rapidly evaluate targeted therapies against CSC proliferation and sphere formation, aiding drug development before in vivo studies.

Area of Science:

  • Oncology
  • Cancer Biology
  • Drug Discovery

Background:

  • Traditional anti-cancer therapies target rapidly proliferating cells, often sparing slow-dividing cancer stem cells (CSCs).
  • The cancer stem cell hypothesis suggests these rare cells drive tumor relapse and metastasis.
  • Targeted therapies using small molecule inhibitors are being developed to address CSCs.

Purpose of the Study:

  • To describe two validated in vitro assays for evaluating targeted therapies against cancer stem cells (CSCs).
  • To establish a rapid, cost-effective, and reproducible pipeline for pre-clinical drug screening.

Main Methods:

  • Assay 1: Measurement of cancer stem cell (CSC) proliferation.
  • Assay 2: Assessment of secondary sphere formation capacity in CSCs.
  • Both assays are designed for in vitro evaluation of small molecule inhibitors.

Main Results:

  • The described assays serve as gold-standard methods for evaluating targeted therapies against CSCs.
  • These assays provide a robust platform for assessing the efficacy of small molecule inhibitors in targeting CSCs.
  • The pipeline enables efficient screening of potential anti-cancer drugs.

Conclusions:

  • The developed in vitro assays are crucial for evaluating targeted therapies against cancer stem cells (CSCs).
  • This assay pipeline offers a rapid, inexpensive, and reproducible method for pre-clinical drug testing.
  • These methods facilitate the advancement of novel CSC-targeted therapies towards in vivo studies.
Keywords:
ProliferationSelf-renewalSmall molecule inhibitorsTargeted therapies

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