Digital Commons Network^™

Th9 Cells Provide Protective Tb Immunity, Mei Xia, Azra Blazevic, Huan Ning, Christopher S Eickhoff, Chad E Storer, Richard D Head, Jianguo Liu, Jessica Jarvela, David Stoeckel, Erin Rakey, Jan Tennant, Daniel L Miller, Kathleen R Holloway, Richard F Silver, Daniel F Hoft

2020-Current year OA Pubs

INTRODUCTION: CD4+ Th9 cells have been associated with inflammatory and allergic diseases. IL-9/Th9 can function as both positive and negative immune regulators, but their protective effects against

METHODS: To study TB-specific Th9 protective effects, we generated Th9 cells from ESAT6-specific TCR transgenic mice and healthy human donors.

RESULTS: Both murine and human Th9 cells significantly inhibited intracellular mycobacterial growth. In both

DISCUSSION: Th9 cells can provide important protection against Mtb infection, and should be targeted with future TB vaccine strategies. Furthermore, Th9 cells appear to utilize a novel protective mechanism independent from Th1-mediated protective responses.

Mapping Of Rorγt+ Dendritic Cells In Human Tissues Establishes Their Preferential Niche In Adult Lymph Nodes, Silvia Lonardi, Shitong Wu, Alina Ulezko Antonova, Yizhou A Liu, Marina Cella, Marco Colonna, William Vermi, Et Al.

2020-Current year OA Pubs

BACKGROUND: The retinoic-acid-receptor-related orphan receptor gamma t (RORγt) isoform is required for the development of lymphoid organs, T-helper 17 cells (Th17), and innate lymphoid cells (ILC3s). Recent data in mouse and human have revealed non-T, non-ILC3 cell populations with antigen presenting features that express RORγt. This study maps the presence of RORγt cells with dendritic cell (DC) features in human adult and fetal lymphoid tissues.

METHODS: By combining multicolor flow cytometry, RNAseq of peripheral blood cells, analysis of lymph node scRNAseq datasets, and microscopic analysis on human tissue sections and single-cell suspensions, this study maps the presence of RORγt cells …