Cognate antigen engagement on parenchymal cells stimulates CD8( ) T cell proliferation in situ
Robyn M Sutherland, Sarah L Londrigan, Jamie L Brady, Emma M Carrington, Julia M Marchingo, Susanne Heinzel, Philip D Hodgkin, Kate L Graham, Thomas W Kay, Yifan Zhan, Andrew M Lew
NATURE COMMUNICATIONS | NATURE PUBLISHING GROUP | Published : 2017
T-cell responses are initiated upon cognate presentation by professional antigen presenting cells in lymphoid tissue. T cells then migrate to inflamed tissues, but further T-cell stimulation in these parenchymal target sites is not well understood. Here we show that T-cell expansion within inflamed tissues is a distinct phase that is neither a classical primary nor classical secondary response. This response, which we term 'the mezzanine response', commences within days after initial antigen encounter, unlike the secondary response that usually occurs weeks after priming. A further distinction of this response is that T-cell proliferation is driven by parenchymal cell antigen presentation, w..View full abstract
Awarded by National Health and Medical Research Council of Australia (NHMRC)
Awarded by NHMRC Independent Research Institutes Infrastructure Support Scheme
We thank Manuela Hancock, Merle Dayton and Lauren Wilkins for expert technical assistance. This work was supported by Rebecca L. Cooper Foundation, National Health and Medical Research Council of Australia (NHMRC) grants (1037321, 1043414, 1080321, 1105209), NHMRC Independent Research Institutes Infrastructure Support Scheme grant (361646) and Victorian State Government Operational Infrastructure Support grant.