title: Gene expression profiling of chicken lymphoid cells after treatment with Lactobacillus acidophilus cellular components.
abstract: Lactobacillus acidophilus has been shown to exert immunostimulating activities in a number of species, including the chicken. To examine the molecular mechanisms of this phenomenon, we investigated spatial and temporal expression of immune system genes in chicken cecal tonsil and spleen mononuclear cells in response to structural constituents of L. acidophilus. Using a low-density chicken immune system microarray, we found that cecal tonsil cells responded more rapidly than spleen cells to the bacterial stimuli, with the most potent stimulus for cecal tonsil cells being DNA and for splenocytes being the bacterial cell wall components. We also discovered that in both splenocytes and cecal tonsil cells, STAT2 and STAT4 genes were highly induced. Given the close interactions between cecal tonsil cells and commensal bacteria, we further examined the involvement of STAT2 and STAT4 signaling pathways in cellular responses to bacterial DNA. Our results revealed that the expression of STAT2, STAT4, IL-18, MyD88, IFN-alpha, and IFN-gamma genes were up-regulated in cecal tonsil cells after treatment with L. acidophilus DNA.
authors.affiliation: Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada N1G 2W1.
authors.forename: Jennifer T
authors.initials: JT
authors.lastname: Brisbin
authors.forename: Huaijun
authors.initials: H
authors.lastname: Zhou
authors.forename: Joshua
authors.initials: J
authors.lastname: Gong
authors.forename: Parviz
authors.initials: P
authors.lastname: Sabour
authors.forename: Mohammad Reza
authors.initials: MR
authors.lastname: Akbari
authors.forename: Hamid Reza
authors.initials: HR
authors.lastname: Haghighi
authors.forename: Hai
authors.initials: H
authors.lastname: Yu
authors.forename: Anthony
authors.initials: A
authors.lastname: Clarke
authors.forename: Aimie Jey
authors.initials: AJ
authors.lastname: Sarson
authors.forename: Shayan
authors.initials: S
authors.lastname: Sharif
mesh_terms: D000818:Animals; D002645:Chickens / Q000276:immunology*; D016207:Cytokines / Q000235:genetics / Q000502:physiology; D020869:Gene Expression Profiling; D007779:Lactobacillus acidophilus; D008214:Lymphocytes / Q000378:metabolism*; D020411:Oligonucleotide Array Sequence Analysis; D016133:Polymerase Chain Reaction; D019936:Probiotics / Q000494:pharmacology*; D050795:STAT2 Transcription Factor / Q000235:genetics / Q000502:physiology; D050797:STAT4 Transcription Factor / Q000235:genetics / Q000502:physiology
chemical_list: D016207:Cytokines; D050795:STAT2 Transcription Factor; D050797:STAT4 Transcription Factor