Targeting secretory autophagy in solid cancers: mechanisms, immune regulation and clinical insights

Area of Science:

• Cell Biology
• Cancer Biology
• Molecular Biology

Background:

• Secretory autophagy is a unique pathway distinct from lysosomal degradation.
• It utilizes conserved autophagy machinery for the secretion of specific cargo.
• This process critically influences tumor progression and resistance to cancer treatments.

Purpose of the Study:

• To systematically review the mechanisms of secretory autophagy, from initiation to cargo release.
• To explore the role of secretory autophagy in various tumor types and inter-tumor heterogeneity.
• To identify future research directions and clinical challenges in targeting secretory autophagy.

Main Methods:

• Literature review of existing research on secretory autophagy.
• Analysis of molecular mechanisms governing cargo selection and secretion.
• Examination of the impact of secretory autophagy on the tumor microenvironment (TME) and treatment outcomes.

Main Results:

• Secretory autophagy mediates the release of specific cytoplasmic substances, not for degradation.
• Secreted molecules modulate the TME, influencing immune responses and drug resistance.
• The process is implicated in the progression of diverse cancer types.

Conclusions:

• Elucidating secretory autophagy mechanisms is crucial for developing novel cancer therapies.
• Targeting secretory autophagy may overcome treatment resistance and improve patient outcomes.
• Further research is needed to address inter-tumor heterogeneity and clinical challenges.