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Bovine activin receptor type II cDNA: cloning and tissue expression
J F Ethier1, A Houde, J G Lussier
1Department of Anatomy and Physiology, Faculty of Veterinary Medicine, University of Montreal, St-Hyacinthe, Québec, Canada.
Molecular and Cellular Endocrinology
|December 1, 1994
Summary
Researchers cloned the bovine activin type II receptor gene. Its expression decreases with testes maturation, suggesting regulation of this key reproductive gene.
Area of Science:
- Molecular Biology
- Reproductive Biology
- Genetics
Background:
- The activin type II receptor plays a crucial role in regulating reproductive functions.
- Understanding the genetic and expression patterns of this receptor is vital for reproductive research.
Purpose of the Study:
- To clone the complementary DNA (cDNA) encoding the bovine activin type II receptor.
- To investigate the evolutionary conservation and expression patterns of the bovine activin type II receptor mRNA.
Main Methods:
- Reverse transcription-polymerase chain reaction (RT-PCR) was used to amplify the bovine activin type II receptor cDNA from testicular RNA.
- Sequence comparisons were performed with human, mouse, and rat homologues.
- Northern blot analysis was utilized to examine mRNA expression levels in reproductive tissues.
Main Results:
- The cDNA for the bovine activin type II receptor was successfully cloned.
- High nucleotide (92.9–94.9%) and amino acid (98.6–99.0%) conservation was observed with mammalian homologues.
- Bovine activin type II receptor mRNA was detected in reproductive tissues, with decreasing levels noted during testicular maturation.
Conclusions:
- The bovine activin type II receptor is highly conserved across mammalian species.
- Differential expression suggests regulatory mechanisms control bActRII gene expression.
- The decline in mRNA levels during testicular maturation indicates a role in reproductive development and function.