title: Mycoplasma and host interaction: In vitro gene expression modulation in Mycoplasma synoviae and infected chicken chondrocytes.
abstract: The complex interplay between Mycoplasma synoviae and chicken chondrocytes (CCH), which come into direct contact during infectious synovitis, has been examined at the level of gene expression. Our previous studies demonstrated a significant influence of M. synoviae on the level of CCH gene expression. Here, we show for the first time that in vitro co-cultivation of M. synoviae and CCH also induces upregulation of gene expression in this mycoplasma. We observed significantly increased expression of genes important for M. synoviae pathogenicity, including cysteine protease cysP, neuraminidase nanH, haemagglutinin vlhA, and the putative nuclease MS53_0284. Moreover, the pattern of gene expression was dependent on the infection environment. In CCH, significant changes in the expression of genes encoding catabolic enzymes of the cartilage extracellular matrix (cathepsins B, K and L, aggrecanase ADAM10, and matrix metalloproteinase MMP2) were demonstrated. Infection of CCH with M. synoviae also elevated the expression of the gene encoding peptidyl arginine deiminase, type III (PADI3), which is responsible for the post-translational citrullination of proteins.
authors.affiliation: Department of Animal Science, Biotechnical Faculty, University of Ljubljana , Groblje 3, SI-1230 Domžale , Slovenia.
authors.forename: Ivanka
authors.initials: I
authors.lastname: Cizelj
authors.affiliation: Department of Animal Science, Biotechnical Faculty, University of Ljubljana , Groblje 3, SI-1230 Domžale , Slovenia.
authors.forename: Daliborka
authors.initials: D
authors.lastname: Dušanić
authors.affiliation: Department of Animal Science, Biotechnical Faculty, University of Ljubljana , Groblje 3, SI-1230 Domžale , Slovenia.
authors.forename: Dušan
authors.initials: D
authors.lastname: Benčina
authors.affiliation: Department of Animal Science, Biotechnical Faculty, University of Ljubljana , Groblje 3, SI-1230 Domžale , Slovenia.
authors.forename: Mojca
authors.initials: M
authors.lastname: Narat
mesh_terms: D000818:Animals; D001426:Bacterial Proteins; D002356:Cartilage; D002645:Chickens; D019902:Chondrocytes / Q000382:microbiology*; D015964:Gene Expression Regulation, Bacterial; D009175:Mycoplasma Infections; D045805:Mycoplasma synoviae / Q000235:genetics* / Q000378:metabolism; D011201:Poultry Diseases / Q000382:microbiology
chemical_list: D001426:Bacterial Proteins
keywords: Mycoplasma synoviae; chicken chondrocytes; enzymes; gene expression; pathogenicity