Dynamic changes in gene expression that occur during the period of spontaneous functional regression in the rhesus macaque corpus luteum

Randy L. Bogan, Melinda J. Murphy, Jon D. Hennebold

    Research output: Contribution to journalArticle

    20 Scopus citations

    Abstract

    Luteolysis of the corpus luteum (CL) during nonfertile cycles involves a cessation of progesterone (P4) synthesis (functional regression) and subsequent structural remodeling. The molecular processes responsible for initiation of luteal regression in the pri mate CL are poorly defined. Therefore, a genomic approach was used to systematically identify differentially expressed genes in the rhesus macaque CL during spontaneous luteolysis. CL were collected before [d 10-11 after LH surge, mid-late (ML) stage] or during (d 14-16, late stage) functional regression. Based on P4 levels, late-stage CL were subdivided into functional-late (serum P4 > 1.5 ng/ml) and functionally regressed late (FRL) (serum P4 < 0.5 ng/ml) groups (n = 4 CL per group). Total RNA was isolated, labeled, and hybridized to Affymetrix genome microarrays that contain elements representing the entire rhesus macaque transcriptome. With the ML stage serving as the baseline, there were 681 differentially expressed transcripts (>2-fold change; P< 0.05) that could be categorized into three primary patterns of expression: 1) increasing from ML through FRL; 2) decreasing from ML through FRL; and 3) increasing ML to functional late, followed by a decrease in FRL. Ontology analysis revealed potential mechanisms and pathways associated with functional and/or structural regression of the macaque CL. Quantitative real-time PCR was used to validate microarray expression patterns of 13 genes with the results being consistent between the two methodologies. Protein levels were found to parallel mRNA profiles in four of five differentially expressed genes analyzed by Western blot. Thus, this database will facilitate the identification of mechanisms involved in primate luteal regression.

    Original languageEnglish (US)
    Pages (from-to)1521-1529
    Number of pages9
    JournalEndocrinology
    Volume150
    Issue number3
    DOIs
    StatePublished - Mar 2009

    ASJC Scopus subject areas

    • Endocrinology

    Fingerprint Dive into the research topics of 'Dynamic changes in gene expression that occur during the period of spontaneous functional regression in the rhesus macaque corpus luteum'. Together they form a unique fingerprint.

  • Cite this