Differential expression study of DRB1 gene transcripts in Haranali sheep exposed to Haemonchus contortus
184 / 2 / 19
Keywords:
Haemonchus contortus, faecal egg count, DRB1 gene, real time PCRAbstract
The Major Histocompatibility class II complex plays an extremely important role in disease resistance and susceptibility of Haemonchus contortus in sheep. Gastrointestinal nematodes constitute a major cause of morbidity and mortality in grazing ruminants. This study was designed to carry out the differential expression of DRB1 gene transcript in low and high fecal egg count animals by real time PCR. Animals were selected on the basis of fecal egg count (FEC). Blood was collected from jugular vein and mRNA was extracted by trizol method. Further, RT-qPCR was done to analyze the differential expression of DRB 1 exon 2 in Low FEC and high FEC animals. The expression level of DRB1 gene transcript was found to be higher in low FEC animals as compare to high FEC animals. Sheep showing resistance to Haemonchus contortus that is having Low FEC had lower (P < 0.05) DRB1*1101 expression than susceptible animals having high FEC.
References
Cinar, M., Mousel, M., Lynn, M., Herrmann-Hoesinga, J., Taylor, B., Stephen, N. and White, M.U. (2016). Ovar-DRB1 haplotypes *2001 and *0301 are associated with sheep growth and ewe lifetime prolificacy. Gene. 595: 187-192.
Corley, M.M. and Savage, A. ( 2015). Expression of the DRB1*1101 allele in meat Goats pasture exposed to Haemonchus contortus. Journal of Agricultural Science. 7 (11): 19-27.
Hassan, M., Good, B., Hanrahan, J., Campion, D., Gearoid S., Mulcahy, G. and Sweeney, T. (2011). The dynamic influence of the DRB1*1101 allele on the resistance of sheep to experimental Teladorsagia circumcincta infection. Veterinary Research. 42: 46
Keane, O.M., Dodds, K.G., Crawford, A.M. and McEwan, J.C. (2007). Transcriptional profiling of Ovis aries identifies Ovar-DQA1 allele frequency differences between nematode-resistant and susceptible selection lines. Physiological Genomics. 30: 253-261.
Livak, K.J. and Schmittgen, T.D. (2001). Analysis of relative gene expression data using real-time Quantitative PCR and the 2(-ΔΔCT) Method. Methods. 25(4): 402-408.
Notter, D.R., Andrew, S.A. and Zajac, A.M. (2003). Responses of hair and wool sheep to a single fixed dose of infective larvae of Haemonchus contortus. Small Ruminant Research. 47: 221–225.
Sayers, G., Good, B., Hanrahan J., Ryan M., Angles J.M. and Sweeney T. (2005): Major histocompatibility complex DRB1 gene: its role in nematode resistance in Suffolk and Texel sheep breeds. Parasitology. 131: 403-409.
Shen, H., Han, G., Jia, B., Jiang, S. and Du, Y. (2014); MHC-DRB1/DQB1 Gene polymorphism and its association with resistance/susceptibility to cystic Echinococcosis in Chinese Merino Sheep. Journal of Parasitoogical Research. doi: 10.1155/2014/272601.
Valilou, R.H., Rafat, S.A., Notter, D.R., Shojda, D., Moghaddam, G. and Nematollahi, A. (2015). Fecal egg counts for gastrointestinal nematodes are associated with a polymorphism in the MHC-DRB1 gene in the Iranian Ghezel sheep breed. Front. Genet. 6: 105.
Valilou, R.H., Sarskanroud, M.R., Rafat, S.A., Ebrahimi, M., Firouzamandi, M. and Mohammadi, S.A. (2016). Association between footrot resistance and microsatellite polymorphisms of ovar-DRB1 and BMC5221 loci in Iranian Ghezel sheep. Revue Méd. Vét. 167: 316-322.
Yue, C., Wanyun, X., Chuangfu, C., Hugh, B.T., Jianfeng, G. (2016). Variations in MHC-DRB1 exon2 and associations with Brucellosis susceptibility in Chinese Merino sheep. doi.org/10.1101/038539.
Submitted
Published
Issue
Section
License
The copyright of the articles published in Veterinary Immunology & Biotechnology vests with the Indian Society for Veterinary Immunology & Biotechnology (ISVIB), who has the right to enter into any agreement with any organization in India or abroad engaged in reprography, photocopying, storage and dissemination of information contained in these journals. The ISVIB has no objection in using the material, provided the information is being utilized for academic purpose but not for commercial use.Submission of a manuscript to VIB implies that if and when the manuscript is accepted for publication, the authors agree to automatic transfer of the copyright to the publisher.