| First Author | Piccirillo AR | Year | 2019 |
| Journal | J Immunol | Volume | 203 |
| Issue | 1 | Pages | 117-126 |
| PubMed ID | 31127034 | Mgi Jnum | J:276960 |
| Mgi Id | MGI:6315777 | Doi | 10.4049/jimmunol.1801585 |
| Citation | Piccirillo AR, et al. (2019) The Lysophosphatidylcholine Transporter MFSD2A Is Essential for CD8(+) Memory T Cell Maintenance and Secondary Response to Infection. J Immunol 203(1):117-126 |
| abstractText | Access to nutrients is critical for an effective T cell immune response to infection. Although transporters for sugars and amino acids have previously been described in the context of the CD8(+) T cell immune response, the active transport of exogenous fatty acids has remained enigmatic. In this study, we discovered that the sodium-dependent lysophosphatidylcholine (LPC) transporter major facilitator superfamily domain containing 2A (MFSD2A) is upregulated on activated CD8(+) T cells and is required for memory T cell maintenance. MFSD2A deficiency in mice resulted in decreased import of LPC esterified to long chain fatty acids into activated CD8(+) T cells, and MFSD2A-deficient cells are at a competitive disadvantage resulting in reduced memory T cell formation and maintenance and reduced response to secondary infection. Mechanistically, import of LPCs was required to maintain T cell homeostatic turnover, which when lost resulted in a decreased memory T cell pool and thus a reduced secondary response to repeat infection. |
