The past, present and future of fluorescent protein tags in anaerobic protozoan parasites

Area of Science:

• Parasitology
• Molecular Biology
• Biochemistry

Background:

• Diarrhoeal diseases are a major global child mortality cause, often linked to anaerobic protozoan parasites like Giardia and Entamoeba.
• Trichomonas vaginalis, an anaerobic protozoan, is a leading non-viral sexually transmitted infection, highlighting the medical importance of anaerobic parasites.
• Limited understanding of anaerobic parasite physiology restricts treatment options.

Purpose of the Study:

• To review the challenges of using traditional fluorescent proteins (FPs) in anaerobic protozoans.
• To explore novel oxygen-independent FPs for studying anaerobic parasite biology.
• To enhance the research toolkit for anaerobe parasitology.

Main Methods:

• Literature review of fluorescent protein applications in anaerobic protozoan research.
• Analysis of the physio-chemical limitations of oxygen-dependent FPs in anaerobic environments.
• Identification and discussion of oxygen-independent FPs, such as miniSOG.

Main Results:

• Oxygen dependency of conventional FPs hinders their use in anaerobic protozoans.
• Novel FPs like miniSOG offer a viable alternative for live-cell imaging in these organisms.
• The development of oxygen-independent FPs can bridge the gap between anaerobe and aerobe parasitology research.

Conclusions:

• Oxygen-independent fluorescent proteins represent a significant advancement for studying anaerobic protozoan parasites.
• These novel tools can overcome previous limitations, enabling detailed investigation of parasite function and dynamics.
• The application of new FPs promises to expand our knowledge and improve therapeutic strategies against anaerobic parasitic infections.