Differential gene expression in cumulus oocyte complexes collected by ovum pick up from repeat breeder and normally fertile Holstein Friesian heifers
| Autor: | Laura Giannino, Cesare Galli, Caterina Cambuli, A. Lukaj, Roberto Puglisi, Rossana Capoferri, Maria Feligini, Andrea Galli, Giovanna Lazzari, Roberto Duchi, Graziella Bongioni |
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| Přispěvatelé: | Puglisi R, Cambuli C, Capoferri R, Giannino L, Lukaj A, Duchi R, Lazzari G, Galli C, Feligini M, Galli A, Bongioni G. |
| Rok vydání: | 2013 |
| Předmět: |
medicine.medical_specialty
Microarray FADS2 Oocyte Retrieval Biology OOCYTE GSTA4 Andrology Endocrinology Food Animals Pregnancy Internal medicine Gene expression medicine OLR1 Animals Gene Cumulus Cells General Medicine Oocyte Fold change Fertility medicine.anatomical_structure Gene Expression Regulation Cattle Female Animal Science and Zoology Holstein Friesian heifers |
| Zdroj: | Animal Reproduction Science. 141:26-33 |
| ISSN: | 0378-4320 |
| DOI: | 10.1016/j.anireprosci.2013.07.003 |
| Popis: | The aim of this study was to establish whether perturbed gene expression during cumulus oocyte development causes repeat breeding in cattle. In this study, a repeat breeder was defined as a normal estrous cycling animal that did not become pregnant after three inseminations despite the absence of clinically detectable reproductive disorders. Transcripts of genes extracted from cumulus oocyte complexes (COC) that were collected from three repeat breeder and three normally fertile Holstein Friesian heifers were compared. Up to 40 COC were collected from each heifer by means of repeated sessions of ovum pick up in the absence of hormonal stimulation; immediately plunged into liquid nitrogen; and stored at −80 °C until analysis. For each heifer, RNA was extracted from the pooled COC and hybridized on GeneChip® Bovine Gene Array (Affymetrix). Analysis of gene expression profiles of repeat breeder and control COC showed that 178 genes were differentially expressed (log2 fold change > 1.5). Of these genes, 43 (24%) were up-regulated and 135 (76%) were down-regulated in repeat breeder relative to control heifers. This altered pattern of expression occurred in genes involved in several cellular biological processes and cellular components such as metabolism, angiogenesis, substrate/ion transport, regulation/signaling, cell adhesion and cytoskeleton. From these, 13 genes potentially involved in cumulus oocyte growth were subjected to validation by qRT-PCR and nine genes (annexin A1, ANXA1; lactoferrin, LTF; interferon stimulated exonuclease 20 kDa, ISG20/HEM45; oxidized low density lipoprotein receptor 1, OLR1; fatty acid desaturase 2, FADS2; glutathione S-transferase A2 and A4, GSTA2 and GSTA4; glutathione peroxidase 1, GPX1; endothelin receptor type A, EDNRA) were confirmed to be differentially expressed. This study identified potential marker genes for fertility in dairy cattle. |
| Databáze: | OpenAIRE |
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