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Quiescent cancer cells: Therapeutic targets to overcome immunotherapy resistance?

Leisha A Emens1, Ashley Cimino-Mathews2

  • 1Department of Medicine, University of Pittsburgh Medical Center Hillman Cancer Center, University of Pittsburgh, 5117 Centre Avenue, 1.46e, Pittsburgh, PA 15213, USA.

Med (New York, N.Y.)
|June 11, 2022
PubMed

Insights

Researchers explored triple-negative breast cancer (TNBC) microenvironments using single-cell technology. They identified quiescent cancer cell niches potentially causing resistance to chemoimmunotherapy and disease relapse in early-stage patients.

Area of Science:

  • Oncology
  • Immunology
  • Genomics

Background:

  • Triple-negative breast cancer (TNBC) presents a significant clinical challenge due to its heterogeneity and poor prognosis.
  • While chemoimmunotherapy offers benefits for high-risk, early-stage TNBC, a subset of patients does not respond effectively.
  • Understanding the tumor microenvironment is crucial for improving treatment strategies.

Purpose of the Study:

  • To investigate the cellular composition and spatial organization of early-stage TNBC sub-microenvironments.
  • To identify specific cancer cell states and niche interactions that may contribute to treatment resistance.
  • To elucidate mechanisms underlying disease relapse following chemoimmunotherapy.

Main Methods:

  • Application of advanced single-cell technologies, including single-cell RNA sequencing (scRNA-seq).
  • Spatial transcriptomics to analyze the tumor microenvironment at high resolution.
  • Bioinformatic analysis to characterize cell populations and their interactions.

Main Results:

  • Identification of distinct cancer cell subpopulations within the TNBC microenvironment.
  • Characterization of quiescent cancer cell niches associated with immune evasion.
  • Correlation of specific niche features with potential immunotherapy resistance.

Conclusions:

  • Quiescent cancer cell niches represent a potential mechanism for chemoimmunotherapy resistance in early-stage TNBC.
  • Targeting these specific niches may offer novel therapeutic strategies to improve patient outcomes.
  • Further research into TNBC sub-microenvironments is warranted to overcome treatment failure.

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