Project description:The major histocompatibility complex (SLA in pigs) encodes molecules for self-nonself discrimination, constitute a major transplantation barrier and is associated with a variety of diseases. Pigs with defined SLA genotypes are a resource for the study of immune response, disease resistance and production traits, as well as an important animal model for transplantation research. The aim of the present study was to explore the influence of defined SLA genotypes on gene expression patterns of immune-related genes in blood mononuclear cells (BMCs). Using a loop design, heterologous cDNA microarray hybridizations were performed to compare Yorkshire pigs representing three defined SLA-DRB1 genotypes (including a potentially new allele). Total RNA was treated with Dnase I treated and amplified. The amplified RNA was reverse transcribed using random primers and incorporating 5-(3-aminoallyl)-dUTP for post-synthesis labelling of the cDNA with the appropriate fluor dyes. Hybridization was performed on a bovine immune-endocrine in-house cDNA microarray printed on glass slides. Microarray fold-change analysis revealed that animals carrying confirmed SLA alleles (SLA-DRB1*070701 and SLA-DRB1*050502) showed consistent differences in gene expression when compared to the two other groups. On the other hand, the group carrying a potentially new allele showed differences that varied depending on the group it was being compared to. Genes that were identified as differentially expressed include macrophage inflammatory protein 1, interleukin 1, toll-like receptor 2 and caspase 1. A better understanding of SLA gene activity can facilitate the definition of new strategies to control animal health and optimize animal production. Keywords: SLA-defined genotype comparative genomic cDNA microarray hybridizations
Project description:Large White and Meishan pigs were either non-treated or injected with mammalian 1-24 ACTH (Immediate Synachten, Novartis France) at the dose of 250 µg per animal. Pigs were sacrificed either immediately after capture from their home cage (non-treated animals) or 1 hour following ACTH injection. Adrenal glands were immediately collected from pigs and frozen on dry ice and then stored at -80°C until RNA isolation. Keywords: stress response, adrenal, gene expression, pig
Project description:Regulatory Mechanisms of Atrial Remodeling of Mitral Regurgitation Pigs This study enrolled 6 pigs (age: 18 months) and divided into three groups: mitral regurgitation pigs (MR) (n = 2; 2 males sacrificed 12 months after surgery), MR pigs treated with valsartan (MRV) (n = 2; 2 males age-matched to MR sacrificed 12 months after surgery), and normal control pigs (NC) (n = 2; 2 males age-matched to MR pigs). Valsartan (3.43 mg/kg/day), a type I angiotensin II receptor blocker, was administered from one week before surgery and then daily after surgery in the MRV group. We sought to systemically elucidate critical differences in the alteration of RNA expression pattern between the atrial myocardium of pigs with and without MR, and between the atrial myocardium of MR pigs with and without valsartan using high-density oligonucleotide microarrays and functional network enrichment analysis.
Project description:Large White and Meishan pigs were either non-treated or injected with mammalian 1-24 ACTH (Immediate Synachten, Novartis France) at the dose of 250 µg per animal. Pigs were sacrificed either immediately after capture from their home cage (non-treated animals) or 1 hour following ACTH injection. Adrenal glands were immediately collected from pigs and frozen on dry ice and then stored at -80°C until RNA isolation. Keywords: stress response, adrenal, gene expression, pig 47 samples
Project description:Skeletal muscle were collected from pigs treated in the control group, the Lys deficiency group and the Lys rescue group. Then, the samples were analyzed by LC-MSMS.