Adaptive immune resistance at the tumour site: mechanisms and therapeutic opportunities

Tae Kon Kim1,2, Esten N Vandsemb3, Roy S Herbst2

  • 1Division of Hematology/Oncology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.

Insights

Tumours develop adaptive immune resistance (AIR) to evade immune attack. Understanding these AIR mechanisms is crucial for developing effective cancer therapies beyond current anti-PD treatments.

Area of Science:

  • Immunology
  • Cancer Biology
  • Drug Development

Background:

  • Tumours evade immune responses through adaptive immune resistance (AIR) mechanisms.
  • Programmed cell death 1 ligand 1 (PDL1) induction by interferon-γ is a validated AIR mechanism.
  • Anti-PD therapy shows efficacy in a subset of advanced cancers, particularly solid tumours.

Purpose of the Study:

  • To highlight the importance of defining AIR mechanisms at the tumour site.
  • To guide future drug development strategies for cancer therapy.
  • To propose practical approaches for enhancing current cancer treatments.

Main Methods:

  • Review of existing literature on adaptive immune resistance.
  • Analysis of clinical trial outcomes combining anti-PD therapy with other drugs.
  • Discussion of mechanistic rationale for drug development.

Main Results:

  • Many combination therapies fail due to a lack of mechanistic understanding.
  • Defining specific AIR mechanisms is key to improving therapeutic outcomes.
  • Targeting AIR offers potential for synergistic or additive effects.

Conclusions:

  • A deeper understanding of tumour-specific AIR mechanisms is essential.
  • Future cancer drug development should focus on rational combination strategies.
  • Optimizing current anti-PD therapy requires a focus on overcoming resistance.

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