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Exploring metabolite driving diversity within human MR1-restricted T cells

Description 
Metabolite based T cell immunity is emerging as a major player in antimicrobial immunity, autoimmunity, metabolic diseases, and cancer. Namely, vitamin B-based derivatives were identified to be captured and presented by the major histocompatibility complex (MHC) class-I related molecule MR1 to T cells, namely Mucosal Associated Invariant T (MAIT) cells. While the αβ MAIT cells with their semi-invariant TRAV1-2+ T cell repertoire constitute the majority of these unconventional T cells, We and other research groups have discovered a diverse population of atypical (TRAV1-2-) αβ T cells that exhibited selective reactivity toward metabolic antigens associated with MR1 (Science 2019 & JBC 2020). This project will tackle the molecular basis underpinning the reactivity and selectivity of the atypical MR1-restricted T cells toward diverse families of metabolic ligands including folate, and riboflavin antigens. Our underlying approach is to express and purify proteins, and determine the 3D structure using the expertise in x-ray crystallography. These are complemented by multi-disciplinary and highly innovative approaches including Surface Plasmon Resonance (SPR), Mass Spectrometry (MS), cellular immunology and advanced atomic and molecular imaging where required.
Essential criteria: 
Minimum entry requirements can be found here: https://www.monash.edu/admissions/entry-requirements/minimum
Keywords 
MR1, MR1-restricted T cells, antigen presentation, protein crystallography
Available options 
Masters by research
Honours
BMedSc(Hons)
Short projects
Joint PhD/Exchange Program
Time commitment 
Full-time
Physical location 
Biomedicine Discovery Institute
Co-supervisors 
Prof 
Jamie Rossjohn

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