Radomir Kratchmarov, Sarah Djeddi, Garrett Dunlap, Wenqin He, Xiaojiong Jia, Caitlin M Burk, Tessa Ryan, Alanna McGill, Jessica R Allegretti, Raghu P Kataru, Babak J Mehrara, Erin M Taylor, Shailesh Agarwal, Neil Bhattacharyya, Regan W Bergmark, Alice Z Maxfield, Stella Lee, Rachel Roditi, Daniel F Dwyer, Joshua A Boyce, Kathleen M Buchheit, Tanya M Laidlaw, Wayne G Shreffler, Deepak A Rao, Maria Gutierrez-Arcelus, Patrick J Brennan
Repetitive exposure to antigen in chronic infection and cancer drives T cell exhaustion, limiting adaptive immunity. In contrast, aberrant, sustained T cell responses can persist over decades in human allergic disease. To understand these divergent outcomes, we employed bioinformatic, immunophenotyping and functional approaches with human diseased tissues, identifying an abundant population of type 2 helper T (TH 2) cells with co-expression of TCF7 and LEF1, and features of chronic activation. These cells, which we termed TH 2-multipotent progenitors (TH 2-MPP) could self-renew and differentiate into cytokine-producing effector cells, regulatory T (Treg ) cells and follicular helper T (TFH ) cells...
April 8, 2024: Nature Immunology