| First Author | Yang L | Year | 2020 |
| Journal | Proc Natl Acad Sci U S A | Volume | 117 |
| Issue | 51 | Pages | 32574-32583 |
| PubMed ID | 33288689 | Mgi Jnum | J:301323 |
| Mgi Id | MGI:6492037 | Doi | 10.1073/pnas.2013188117 |
| Citation | Yang L, et al. (2020) TCRalpha reporter mice reveal contribution of dual TCRalpha expression to T cell repertoire and function. Proc Natl Acad Sci U S A 117(51):32574-32583 |
| abstractText | It is known that a subpopulation of T cells expresses two T cell receptor (TCR) clonotypes, though the extent and functional significance of this is not established. To definitively evaluate dual TCRalpha cells, we generated mice with green fluorescent protein and red fluorescent protein reporters linked to TCRalpha, revealing that approximately 16% of T cells express dual TCRs, notably higher than prior estimates. Importantly, dual TCR expression has functional consequences, as dual TCR cells predominated response to lymphocytic choriomeningitis virus infection, comprising up to 60% of virus-specific CD4(+) and CD8(+) T cells during acute responses. Dual receptor expression selectively influenced immune memory, as postinfection memory CD4(+) populations contained significantly increased frequencies of dual TCR cells. These data reveal a previously unappreciated contribution of dual TCR cells to the immune repertoire and highlight their potential effects on immune responses. |
