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Published on: June 27, 2012
H19 gene methylation study in Indian buffalo (Bubalus bubalis)
Ajai K Tripathi1, Jitendra V Solanki, Chaitanya G Joshi
1Department of Animal Biotechnology, College of Veterinary Science & Animal Husbandry, Anand Agricultural University, Anand, 388 001, Gujarat, India. drajais@gmail.com
Veterinary Research Communications
|October 12, 2012
Summary
DNA methylation in the H19 gene promoter was analyzed in Indian buffalo breeds. Methylation levels varied among Jaffarabadi, Surti, and Mehsani breeds, with no correlation found to milk production traits.
Area of Science:
- Epigenetics
- Genomics
- Animal Science
Background:
- DNA methylation regulates gene expression and genomic stability.
- Imprinted genes, like H19, are expressed from a single parental allele.
- Understanding H19 methylation is crucial for buffalo reproductive and production traits.
Purpose of the Study:
- To investigate the DNA methylation status of the H19 gene promoter CTCF III region.
- To compare methylation patterns across three Indian buffalo breeds: Jaffarabadi, Surti, and Mehsani.
- To explore potential correlations between H19 methylation and milk production traits.
Main Methods:
- Bisulfite sequencing was employed to analyze DNA methylation.
- The H19 gene promoter CTCF III region was targeted for analysis.
- Methylation percentages were quantified for each breed.
Main Results:
- Significant variations in H19 methylation percentages were observed among the three breeds (Jaffarabadi: 50.19%, Surti: 70.85%, Mehsani: 52.24%).
- The overall mean methylation percentage across all breeds was 57.36%.
- Unexpected nucleotide conversions and deletions were noted post-bisulfite sequencing.
- No significant correlation was found between H19 methylation patterns and milk yield or milk fat percentage.
Conclusions:
- H19 gene promoter methylation patterns differ across Indian buffalo breeds.
- Bisulfite sequencing revealed complexities beyond simple CpG methylation.
- H19 methylation status does not appear to influence milk production traits in these buffalo breeds.
