title: Immunomodulatory roles and functional analysis of pre-B lymphocyte DT40 cells with the bursal-derived BSP-II treatment.
abstract: The bursa of Fabricius, the acknowledged central humoral immune organ, is vital to B cell differentiation. However, the regulatory function of the bursal-derived peptide on avian B cell proliferation has not been reported. BSP-II is a recently reported bursal-derived bioactive peptide. In this paper, 75 days-old chicks were twice subcutaneously immunized with BSP-II and inactivated avian influenza virus (AIV, H(9)N(2) strain). It was proved that BSP-II induced a strongly AIV-specific HI antibody production in the immunized chicks. Also, BSP-II could enhance avian pre-B lymphocyte DT40 cell viability. To investigate the global patterns of gene expression in DT40 cells after BSP-II treatment, gene microarray was carried out. It was identified that the differentially expressed genes were involved in various pathways, of which six pathways were associated with signaling transductions, including ErbB signaling, MAPK signaling, Toll-like receptor signaling, Notch signaling, mTOR signaling, and Wnt signaling. Finally, RT-qPCR was used to confirm the microarray expression data. These results indicated the molecular basis of pre-B lymphocyte viability with BSP-II treatment, which provided a potential mechanism of the bursa of Fabricius on pre-B lymphocyte viability, differentiation, and development. These results are valid for the mechanism of the bursa of Fabricius on B lymphocytes development.
authors.affiliation: Department of Agriculture, Nanjing Agriculture University, Nanjing, China.
authors.forename: Xiu-Li
authors.initials: XL
authors.lastname: Feng
authors.forename: Bin
authors.initials: B
authors.lastname: Zhou
authors.forename: Rui-Bing
authors.initials: RB
authors.lastname: Cao
authors.forename: Qing-Tao
authors.initials: QT
authors.lastname: Liu
authors.forename: Ke
authors.initials: K
authors.lastname: Liu
authors.forename: Xiao-Dong
authors.initials: XD
authors.lastname: Liu
authors.forename: Yuan-Peng
authors.initials: YP
authors.lastname: Zhang
authors.forename: Li
authors.initials: L
authors.lastname: Huang
authors.forename: Xiang-Bo
authors.initials: XB
authors.lastname: Ji
authors.forename: Jun
authors.initials: J
authors.lastname: Luo
authors.forename: Gaiping
authors.initials: G
authors.lastname: Zhang
authors.forename: Pu-Yan
authors.initials: PY
authors.lastname: Chen
mesh_terms: D000818:Animals; D030161:Avian Proteins / Q000737:chemistry / Q000494:pharmacology*; D002060:Bursa of Fabricius / Q000737:chemistry*; D002454:Cell Differentiation / Q000187:drug effects; D049109:Cell Proliferation / Q000187:drug effects; D002645:Chickens; D007155:Immunologic Factors / Q000737:chemistry / Q000494:pharmacology*; D010455:Peptides / Q000737:chemistry / Q000494:pharmacology*; D054448:Precursor Cells, B-Lymphoid / Q000166:cytology / Q000187:drug effects / Q000276:immunology*
chemical_list: D030161:Avian Proteins; D007155:Immunologic Factors; D010455:Peptides