Relative gene expression analysis of beta-casein gene and its transcription regulatory genes in primary buffalo mammary epithelial cells of Surti and Jaffarabadi buffaloes
INDIAN JOURNAL OF ANIMAL SCIENCES
Authors: Pandya, Gaurav; Ramani, Umed; Janmeda, Mamta; Tyagi, Kuldeep; Brahmkshtri, Balkrushna; Kharadi, Vishnu
Abstract
The present study was designed to estimate the relative gene expression of major genes responsible for beta-casein and its transcription regulation during early lactation cycle in Surti and Jaffarabadi buffaloes. Ten buffaloes of each breed maintained at Livestock Research Station, Navsari and Cattle Breeding Farm, Junagadh, respectively were selected for the study. The RNA was extracted from noninvasively isolated primary buffalo mammary epithelial cells (pBMEC) obtained using antibody mediated magnetic separation method from milk samples collected at day 15 and 60 postpartum (pp). Primers used for amplification of beta-casein gene (CSN2) and its transcription regulatory genes were bovine specific. The mean relative expressions of C/EBP beta, RUNX2 and STAT5A genes were significantly higher in Jaffarabadi buffaloes as compared to Surti buffaloes at day 15 pp. However, between breed differences in the mean relative expressions of C/EBP beta, RUNX2 and STAT5A genes were not observed at 60 days pp. The relative expressions of CSN2 and YY1 genes did not differ significantly within or between breeds. The mean relative expression of KRT8 gene was almost comparable among all the groups under present study. Thus, only beta casein transcription regulatory genes C/EBP beta, RUNX2 and STAT5A amongst all studied genes showed significant between breed variability at day 15 pp, however this variability too got subsided as lactation stage advanced to day 60 pp.
Differential proteomics mass spectrometry of melanosis coli
AMERICAN JOURNAL OF TRANSLATIONAL RESEARCH
Authors: Yuan, Siqi; Wang, Ping; Zhou, Xin; Xu, Jinjin; Lu, Shenao; Chen, Yan; Zhang, Yingjian
Abstract
This study aims to reveal the biological relevancy between melanosis coli (MC) with colon cancer by analyz-ing the proteomics differences of tissues of melanosis coli, colon cancer, and normal ones to probe into the causes and development mechanisms of MC from the perspective of biomolecules. Fourteen differential protein spots were found in the study after using two-dimensional gel electrophoresis (2-DE) and bio-mass spectrometry (MALDI-TOF/ TOF-MS). Specifically, six and eight differential protein spots in the melanosis coli tissues were detected, respective-ly, compared with the normal tissues and colon cancer tissues. Eight kinds of proteins, including keratin 8 (KRT8), keratin 18 (KRT18), fibrinogen beta chain isoform 2 preproprotein (FGB), catalase (CAT), 26s protease regulatory subunit 10b (PSMC6), isoform 1 of tropomyosin alpha-4 chain (TPM4), carbonic anhydrase 1 (CA1), isoform of prelammin-A/C (LMNA), were retrieved through the mass spectral database, which could be deemed as associated proteins of MC and colon cancer. The different expressions in the disease tissues indicate that these proteins may be connected with the carcinogenesis of MC as well as the malignant proliferation, development, differentiation, and diffusion of cancer cells.