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Updated: Aug 11, 2026
09:11
Isolation of Small Preantral Follicles from the Bovine Ovary Using a Combination of Fragmentation, Homogenization, and Serial Filtration
Published on: September 27, 2022
Sequence analysis of cDNA encoding rabbit follicle-stimulating hormone beta-subunit precursor protein
Yoko Noguchi1, Kaoru Takano, Minako Koura
1Laboratory of Experimental Animal Models, National Institute of Biomedical Innovation, Saito-Asagi 7-6-8, Ibaraki, Osaka 567-0085, Japan.
General and Comparative Endocrinology
|February 16, 2006
Summary
Researchers elucidated the molecular basis of rabbit superovulation by sequencing the follicle-stimulating hormone (FSH) beta-subunit precursor protein. Rabbit FSH shows closer phylogenetic relation to human FSH, suggesting human preparations may be more effective for superovulation induction.
Area of Science:
- Reproductive Biology
- Molecular Genetics
- Comparative Genomics
Background:
- Rabbit superovulation is an economically important trait in animal breeding.
- Understanding the molecular mechanisms of FSH regulation is crucial for optimizing reproductive technologies.
Purpose of the Study:
- To determine the cDNA sequence of the follicle-stimulating hormone (FSH) beta-subunit precursor protein in rabbits.
- To compare rabbit FSH beta-subunit sequences with those of other mammals for phylogenetic insights.
- To investigate potential molecular bases for efficient superovulation in rabbits.
Main Methods:
- Utilized 5' and 3' rapid amplification of cDNA ends (RACE) to identify FSH beta-subunit transcripts.
- Analyzed pituitary cDNA libraries from Japanese White rabbits.
- Performed phylogenetic analysis of deduced amino acid sequences.
Main Results:
- Identified at least three distinct transcripts for the rabbit FSH beta-subunit precursor protein, varying in length due to polyadenylation.
- Confirmed a conserved coding sequence for the 130-amino acid precursor protein across transcripts.
- Phylogenetic analysis revealed a closer evolutionary relationship between rabbit and human FSH beta-subunit sequences compared to other mammals.
Conclusions:
- Rabbit FSH beta-subunit exhibits polyadenylation variants, but these likely do not significantly impact protein coding.
- The close phylogenetic relationship to human FSH suggests potential cross-species efficacy.
- Human FSH preparations may be more effective for inducing superovulation in rabbits compared to preparations from other species.
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