title: Preferential generation of follicular B helper T cells from Foxp3+ T cells in gut Peyer's patches.
abstract: Most of the immunoglobulin A (IgA) in the gut is generated by B cells in the germinal centers of Peyer's patches through a process that requires the presence of CD4+ follicular B helper T(TFH) cells. The nature of these T(FH) cells in Peyer's patches has been elusive. Here, we demonstrate that suppressive Foxp3+CD4+ T cells can differentiate into TFH cells in mouse Peyer's patches. The conversion of Foxp3+ T cells into TFH cells requires the loss of Foxp3 expression and subsequent interaction with B cells. Thus, environmental cues present in gut Peyer's patches promote the selective differentiation of distinct helper T cell subsets, such as TFH cells.
authors.affiliation: Laboratory for Mucosal Immunity, RIKEN, Yokohama 1-7-22, Tsurumi, Yokohama, 230-0045, Japan.
authors.forename: Masayuki
authors.initials: M
authors.lastname: Tsuji
authors.forename: Noriko
authors.initials: N
authors.lastname: Komatsu
authors.forename: Shimpei
authors.initials: S
authors.lastname: Kawamoto
authors.forename: Keiichiro
authors.initials: K
authors.lastname: Suzuki
authors.forename: Osami
authors.initials: O
authors.lastname: Kanagawa
authors.forename: Tasuku
authors.initials: T
authors.lastname: Honjo
authors.forename: Shohei
authors.initials: S
authors.lastname: Hori
authors.forename: Sidonia
authors.initials: S
authors.lastname: Fagarasan
mesh_terms: D019264:Adoptive Transfer; D000818:Animals; D001402:B-Lymphocytes / Q000276:immunology; D015496:CD4-Positive T-Lymphocytes / Q000166:cytology / Q000276:immunology* / Q000378:metabolism; D019013:CD40 Antigens / Q000378:metabolism; D002454:Cell Differentiation; D003713:Dendritic Cells / Q000166:cytology / Q000276:immunology; D015536:Down-Regulation; D051858:Forkhead Transcription Factors / Q000235:genetics / Q000378:metabolism*; D020869:Gene Expression Profiling; D018858:Germinal Center / Q000276:immunology; D007071:Immunoglobulin A, Secretory / Q000096:biosynthesis; D007421:Intestine, Small / Q000166:cytology / Q000276:immunology; D008198:Lymph Nodes / Q000166:cytology / Q000276:immunology; D008213:Lymphocyte Activation; D051379:Mice; D008822:Mice, Transgenic; D010581:Peyer's Patches / Q000166:cytology / Q000276:immunology*; D013154:Spleen / Q000166:cytology / Q000276:immunology; D016176:T-Lymphocyte Subsets / Q000166:cytology / Q000276:immunology* / Q000378:metabolism; D006377:T-Lymphocytes, Helper-Inducer / Q000166:cytology / Q000276:immunology* / Q000378:metabolism; D050378:T-Lymphocytes, Regulatory / Q000166:cytology / Q000276:immunology* / Q000378:metabolism
chemical_list: D019013:CD40 Antigens; D051858:Forkhead Transcription Factors; C498833:Foxp3 protein, mouse; D007071:Immunoglobulin A, Secretory