Development of qPCR assay for estimation of transcriptional abundance of chemokines during embryonic implantation in buffaloes

Rajni Kumari. Indian Council of Agricultural Research. Division of Livestock and Fishery Mangement; Rakesh Kumar. Indian Council of Agricultural Research; Shanker Dayal. Indian Council of Agricultural Research. Division of Livestock and Fishery Management; Poolangulam Chinnakkan Chandran. Indian Council of Agricultural Research. Division of Livestock and Fishery Management; Sanjay Kumar. Department of Animal Nutrition; Pradeep Kumar Ray. Indian Council of Agricultural Research. Division of Livestock and Fishery Management; Reena Kumari Kamal. Indian Council of Agricultural Research. Division of Livestock and Fishery Management; Amitava Dey. Indian Council of Agricultural Research. Division of Livestock and Fishery Management

Development of qPCR assay for estimation of transcriptional abundance of chemokines during embryonic implantation in buffaloes

2021

Rajni Kumari(Research Complex for Eastern Region, Bihar (India). Indian Council of Agricultural Research. Division of Livestock and Fishery Mangement) | Rakesh Kumar(Research Complex for North Eastern Hill Region, Umiam (India). Indian Council of Agricultural Research) | Shanker Dayal(Research Complex for Eastern Region, Bihar (India). Indian Council of Agricultural Research. Division of Livestock and Fishery Management) | Poolangulam Chinnakkan Chandran(Research Complex for Eastern Region, Bihar (India). Indian Council of Agricultural Research. Division of Livestock and Fishery Management) | Sanjay Kumar(Bihar Veterinary College, Bihar (India). Department of Animal Nutrition) | Pradeep Kumar Ray(Research Complex for Eastern Region, Bihar (India). Indian Council of Agricultural Research. Division of Livestock and Fishery Management) | Reena Kumari Kamal(Research Complex for Eastern Region, Bihar (India). Indian Council of Agricultural Research. Division of Livestock and Fishery Management) | Amitava Dey(Research Complex for Eastern Region, Bihar (India). Indian Council of Agricultural Research. Division of Livestock and Fishery Management)

Successful pregnancy is the outcome of a well coordinated embryo- maternal communication events. Few evidences suggest the role of cytokines signaling pathways as mediators of these communications for establishment of pregnancy. In order to investigate the role of cytokines CCL8 and CXCL10 in embryonic implantation during pregnancy, the present study aimed to develop quantitative real time PCR method based on SYBR Green dye chemistry. Primers were designed for the amplification of CCL8, CXCL10 and GAPDH (endogenous control) genes specific to bovines using Primer 3 software. The amplification products for CCL8, CXCL10 and GAPDH (endogenous control) genes yielded fragments of 388, 151 and 81 bp respectively. Purified PCR Products were used for the generation of standard curve for all the three genes. Six scalars tenfold serial dilutions of every PCR product were performed for amplification of genes by optimized protocol. Each sample was run in triplicate along with a no template control for every assay. Each run was completed with a melting curve analysis to confirm the specificity of amplification and lack of primers dimers. The standards generated linear relationships with regression coefficients: r sup(2)=0.996, 0.993 and 0.992 for CCL8, CXCL10 and GAPDH genes respectively. The method posed to be reliable approach for estimating the relative expression of cytokines CCL8 and CXCL10 in peripheral blood leucocytes in buffaloes.

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