Cysteine cathepsin proteases in apicomplexan parasites

Area of Science:

• Parasitology
• Molecular Biology
• Biochemistry

Background:

• Apicomplexan parasites cause significant human and animal diseases.
• Limited treatment options and emerging resistance necessitate new therapeutic strategies.
• Cysteine cathepsins are vital proteases in apicomplexan parasites.

Purpose of the Study:

• To review cysteine cathepsins in five major Apicomplexa species.
• To highlight their structures, features, and functions in parasite biology and host interactions.
• To identify these proteases as potential therapeutic targets.

Main Methods:

• Literature review of published data on apicomplexan cysteine cathepsins.
• Comparative analysis of cathepsin structures and functions across different species.
• Synthesis of information on their roles in parasite life cycles and host-parasite interactions.

Main Results:

• Apicomplexan cysteine cathepsins exhibit diverse structures and functions.
• Shared functions include host cell invasion and egress.
• Unique functions, like hemoglobin degradation in Plasmodium falciparum, were identified.
• These proteases are involved in various parasite stages and pathways.

Conclusions:

• Apicomplexan cysteine cathepsins are crucial for parasite survival and pathogenesis.
• Their diverse roles highlight their potential as therapeutic targets.
• Further research is needed to fully elucidate their biology and develop novel interventions.