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The role of chaperone-mediated autophagy in drug resistance

Ana Beatriz da Silva Teixeira1, Maria Carolina Clares Ramalho1, Izadora de Souza1

  • 1Universidade Federal de São Paulo (UNIFESP), Departamento de Oncologia Clínica e Experimental, São Paulo, SP, Brazil.

Genetics and Molecular Biology
|June 3, 2024
PubMed

Insights

Chaperone-mediated autophagy (CMA) plays a dual role in cancer, aiding tumor progression and influencing drug resistance. Targeting CMA, particularly LAMP2A, may enhance cancer therapy sensitivity.

Area of Science:

  • Molecular Biology
  • Oncology
  • Cellular Stress Response

Background:

  • Drug resistance is a major challenge in cancer treatment, driving the search for novel therapeutic strategies.
  • Autophagy modulation shows promise, but the specific role of chaperone-mediated autophagy (CMA) in cancer remains under-explored.
  • CMA is a selective form of autophagy crucial for protein degradation, particularly under cellular stress conditions.

Purpose of the Study:

  • To review the multifaceted role of chaperone-mediated autophagy (CMA) in cancer progression and therapeutic resistance.
  • To highlight the impact of stress conditions on CMA modulation in cancer cells.
  • To discuss the potential of targeting CMA for enhancing cancer treatment efficacy.

Main Methods:

  • Literature review focusing on the molecular mechanisms of CMA in cancer.
  • Analysis of studies investigating the interplay between the tumor microenvironment and CMA.
  • Examination of evidence linking CMA modulation (e.g., LAMP2A suppression) to drug sensitivity and resistance.

Main Results:

  • Stress conditions significantly modulate CMA activity in cancer cells, influencing protein degradation pathways.
  • CMA can promote tumorigenesis by degrading tumor suppressor proteins.
  • CMA, through mechanisms involving LAMP2A, contributes to therapy resistance, but its suppression can enhance drug sensitivity in certain contexts.

Conclusions:

  • CMA is a critical factor in both cancer progression and the development of drug resistance.
  • Targeting CMA, specifically by modulating LAMP2A, presents a promising strategy to overcome therapeutic resistance.
  • Further research into selective CMA modulators is essential for improving cancer treatment outcomes.

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