Autophagy in protists and their hosts: When, how and why?

Area of Science:

• Cellular Biology
• Parasitology
• Molecular Biology

Background:

• Pathogenic protists cause globally prevalent diseases like malaria and sleeping sickness, often lacking effective treatments.
• These parasites undergo complex life-cycle transformations, necessitating cellular adaptations for host survival.
• Autophagy, a conserved cellular degradation pathway, is crucial for protist differentiation and fitness.

Purpose of the Study:

• To review the current understanding of autophagy in pathogenic protists.
• To elucidate the role of autophagy in parasite life cycles and host-pathogen interactions.
• To highlight the potential of targeting autophagy for novel anti-parasitic strategies.

Main Methods:

• Literature review of studies on autophagy in pathogenic protists.
• Analysis of conserved autophagy-related proteins (ATGs) in protists.
• Examination of host-pathogen interactions involving autophagy.

Main Results:

• Protist autophagy utilizes a limited set of ATGs for autophagosome formation and degradation.
• Host autophagy modulation by pathogens significantly impacts infection outcomes.
• Autophagy is essential for protist differentiation and adaptation to host environments.

Conclusions:

• Autophagy is a critical cellular mechanism for pathogenic protists.
• Targeting autophagy pathways presents a promising avenue for developing new antiparasitic therapies.
• Further research into protist autophagy is essential for combating parasitic diseases.