Title |
Recognition of Vitamin B Precursors and Byproducts by Mucosal Associated Invariant T Cells*
|
---|---|
Published in |
Journal of Biological Chemistry, October 2015
|
DOI | 10.1074/jbc.r115.685990 |
Pubmed ID | |
Authors |
Sidonia B G Eckle, Alexandra J Corbett, Andrew N Keller, Zhenjun Chen, Dale I Godfrey, Ligong Liu, Jeffrey Y W Mak, David P Fairlie, Jamie Rossjohn, James McCluskey |
Abstract |
Vitamin B2 (riboflavin) is essential for metabolic functions and is synthesized by many bacteria, yeast and plants, but not by mammals and other animals, which must acquire it from the diet. In mammals, modified pyrimidine intermediates from the microbial biosynthesis of riboflavin are recognized as signature biomarkers of microbial infection. This recognition occurs by specialized lymphocytes known as Mucosal Associated Invariant T (MAIT) cells. The Major Histocompatibility class I-like antigen presenting molecule, MR1, captures these pyrimidine intermediates, but only after their condensation with small molecules derived from glycolysis and other metabolic pathways to form short-lived antigens. The resulting MR1-Ag complexes are recognized by MAIT cell antigen receptors (αβ TCRs) and the subsequent MAIT cell immune responses are thought to protect the host from pathogens at mucosal surfaces. Here we review our understanding of how these novel antigens are generated and discuss their interactions with MR1 and MAIT TCRs. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
United States | 3 | 75% |
Unknown | 1 | 25% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 2 | 50% |
Scientists | 2 | 50% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
United Kingdom | 1 | <1% |
United States | 1 | <1% |
Thailand | 1 | <1% |
Australia | 1 | <1% |
Unknown | 133 | 97% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 25 | 18% |
Researcher | 24 | 18% |
Student > Bachelor | 13 | 9% |
Student > Master | 11 | 8% |
Student > Doctoral Student | 8 | 6% |
Other | 20 | 15% |
Unknown | 36 | 26% |
Readers by discipline | Count | As % |
---|---|---|
Immunology and Microbiology | 33 | 24% |
Agricultural and Biological Sciences | 22 | 16% |
Biochemistry, Genetics and Molecular Biology | 18 | 13% |
Medicine and Dentistry | 9 | 7% |
Chemistry | 5 | 4% |
Other | 11 | 8% |
Unknown | 39 | 28% |