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  • Title: Differential expression and characterization of ATP1A1 exon17 gene by high resolution melting analysis and RT-PCR in Indian goats.
    Author: Kaushik R, Goel A, Rout PK.
    Journal: Mol Biol Rep; 2019 Oct; 46(5):5273-5286. PubMed ID: 31414310.
    Abstract:
    The investigation was carried out to analyse the genetic polymorphism and gene expression of ATP1A1 gene in four different Indian goat breeds by using high resolution melting (HRM) and real time-PCR. ATPase is electro-genic ion pump which is maintains the balance of sodium and potassium ions in animal cells. The transport of Na+& K+ is variable at cellular level during extreme hot period. Therefore, susceptible and tolerant animals were selected based on the physiological responses during hot period. Blood samples were collected from individuals, DNA was isolated. The 300 bp fragment of ATP1A1 gene was amplified by PCR and HRM genotyping was performed. The melting curves were analysed, differential temperature-shift plot showed three different genotypes in all the analysed samples. Out of the 135 samples, the distribution percentages were 55.56% (AA/blue), 33.33% (AC/red) and 11.11% (CC/green). The sequence variation revealed a SNP at 143rd position (A>C). The nucleotide diversity was 0.695 ± 0.403, 0.732 ± 0.424, 0.662 ± 0.433 and 0.687 ± 0.398 in Barbari, Jamunapari, Jakharna and Sirohi, respectively. The respiration rate (RR) was significantly different (P < 0.05) between AA and AC (t = 1.875, df = 38) genotype and heart rate (HR) was significantly different (P < 0.05) between AA and CC genotype. The relative expression pattern of ATP1A1 in SNP variants and non-variants animal tissues showed 19.09 and 6.93 fold higher than control (non-variant), respectively. Jamunapari showed higher fold value of ATP1A1 gene in comparison to Barbari, Jakharna and Sirohi. However, the heat stress-susceptible phenotype had significantly higher gene expression than stress-tolerant in all the breeds. The variation may be used as a marker for selection on the basis of physiological parameters and expression of ATP1A1 gene in goats indicating the specificity of expression in each tissue.
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