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Characterization of ovine stem cell factor messenger ribonucleic acid and protein in the corpus luteum throughout the luteal phase



Characterization of ovine stem cell factor messenger ribonucleic acid and protein in the corpus luteum throughout the luteal phase



Biology of Reproduction 54(5): 970-979



Stem cell factor (SCF) is a growth factor known to have profound effects on the proliferation, migration, differentiation, and survival of numerous cell types, including those of the ovary. The objectives of the present study were to identify and characterize expression of this growth factor in the ovine corpus luteum (CL). A 952-bp cDNA was amplified from Day 3 (Day 0 = estrus) ovine luteal total cellular (tc) RNA by reverse transcriptase-polymerase chain reaction and determined to encode SCF. Northern analysis of Day 10 luteal poly(A)+ RNA indicated one major transcript of approximately 6.5 kb. SCF mRNA was localized within Day 3 and Day 10 CL by in situ hybridization and was expressed throughout luteal tissue on both days examined. To asses expression throughout the luteal phase, SCF mRNA was quantified by ribonuclease protection assay in tcRNA collected on Day 3, 7, 10, 13, and 16; values did not differ across days (p > 0.10). Similarly, SCF mRNA was quantified in tcRNA isolated from pools of Day 10 large and small steroidogenic cells (n = 4 and 3, respectively); levels did not differ (p > 0.10) between cell types. In addition, SCF protein was detected in CL on Days 3 and 10, and was expressed in a cell-specific manner in cells with morphological characteristics of large and small luteal cells. These data indicate that SCF may be involved in communication among steroidogenic cells and/or between steroidogenic and nonsteroidogenic cells of the CL.

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Accession: 002775844

Download citation: RISBibTeXText

PMID: 8722615

DOI: 10.1095/biolreprod54.5.970


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