Temporal expression of GDF-9 and BMP-15 mRNAs in canine ovarian follicles.

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  • Additional Information
    • Source:
      Publisher: Elsevier Country of Publication: United States NLM ID: 0421510 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-3231 (Electronic) Linking ISSN: 0093691X NLM ISO Abbreviation: Theriogenology Subsets: MEDLINE
    • Publication Information:
      Publication: [New York, N.Y.?] : Elsevier
      Original Publication: Los Altos, Calif., Geron-X.
    • Subject Terms:
      Dogs* ; Gene Expression*; Bone Morphogenetic Protein 15/*genetics ; Growth Differentiation Factor 9/*genetics ; Ovarian Follicle/*metabolism ; RNA, Messenger/*analysis; Animals ; Cumulus Cells/metabolism ; Estrous Cycle/metabolism ; Female ; Granulosa Cells/metabolism ; Oocytes/chemistry ; Oocytes/metabolism ; Ovarian Follicle/cytology ; Real-Time Polymerase Chain Reaction ; Theca Cells/metabolism
    • Abstract:
      This study aimed to investigate the expression profiles of growth differentiation factor 9 (GDF-9) and bone morphogenetic protein 15 (BMP-15) mRNA in canine oocytes and follicular cells throughout development at the different phases of the estrus cycle. Ovarian structures (follicles and CL) and plasma progesterone concentration were used to confirm the physiological status of each donor. Denuded oocytes and their follicular cells were recovered from follicles (n = 675) distributed into 4 types (preantral, small antral ∼0.2-0.39 mm, medium antral ∼0.4-5.9 mm, and large antral ∼6-8 mm). Total RNA was extracted and reverse transcribed, and the levels of expression for these 2 genes were determined using a quantitative real-time polymerase chain reaction technique; the data were evaluated by ANOVA. Relative expressions levels of GDF-9 and BMP-15 transcripts were detected in the oocyte and follicular cells in all follicular stages evaluated, showing differential changes (P < 0.05) during development over the estrus cycle. The expression patterns of both transcripts were highly correlated between follicles cells and oocytes (r > 0.8; P < 0.05 for GDF-9 and BMP-15), although GDF-9 was expressed at higher levels (P < 0.05) in the oocyte compared with the follicle cells. All cell types showed more GDF-9 mRNA abundance at early developing stages, mainly in the anestrus phase, and declining levels in the later stages (P < 0.05), whereas BMP-15 mRNA levels increased (P < 0.05) in follicular cells and oocytes from the preantral to the later stages, and remained constant during the final preovulatory stage. In conclusion, these two genes were detected in follicular cells and oocytes and were differentially expressed during the follicular development across the estrus cycle.
      (Copyright © 2016 Elsevier Inc. All rights reserved.)
    • Contributed Indexing:
      Keywords: Bitch oocyte; Follicular development; Paracrine factors; Transcripts
    • Accession Number:
      0 (Bone Morphogenetic Protein 15)
      0 (Growth Differentiation Factor 9)
      0 (RNA, Messenger)
    • Publication Date:
      Date Created: 20160626 Date Completed: 20170417 Latest Revision: 20171008
    • Publication Date:
      20240829
    • Accession Number:
      10.1016/j.theriogenology.2016.05.013
    • Accession Number:
      27341772