PMID- 22612931 OWN - NLM STAT- MEDLINE DCOM- 20121009 LR - 20120522 IS - 1525-3198 (Electronic) IS - 0022-0302 (Linking) VI - 95 IP - 6 DP - 2012 Jun TI - Selection of suitable reference genes for quantitative gene expression studies in milk somatic cells of lactating cows (Bos indicus). PG - 2935-45 LID - 10.3168/jds.2011-4442 [doi] AB - We assessed the suitability of 9 internal control genes (ICG) in milk somatic cells of lactating cows to find suitable reference genes for use in quantitative PCR (qPCR). Eighteen multiparous lactating Sahiwal cows were used, 6 in each of 3 lactation stages: early (25 +/- 5 d in milk), mid (160 +/- 15 d in milk), and late (275 +/- 25 d in milk) lactation. Nine candidate reference genes [glyceraldehyde 3-phosphate dehydrogenase (GAPDH), protein phosphatase 1 regulatory subunit 11 (PPP1R11), beta-actin (ACTB), beta-2 microglobulin (B2M), 40S ribosomal protein S15a (RPS15A), ubiquitously expressed transcript (UXT), mitochondrial GTPase 1 (MTG1), 18S rRNA (RN18S1), and ubiquitin (UBC)] were evaluated. Three genes, beta-casein (CSN2), lactoferrin (LTF), and cathelicidin (CAMP) were chosen as target genes. Very high amplification was observed in 7 ICG and very low level amplification was observed in 2 ICG (UXT and MTG1). Thus, UXT and MTG1 were excluded from further analysis. The qPCR data were analyzed by 2 software packages, geNorm and NormFinder, to determine suitable reference genes, based on their stability and expression. Overall, PPP1R11, ACTB, UBC, and GAPDH were stably expressed among all candidate reference genes. Therefore, these genes could be used as ICG for normalization of qPCR data in milk somatic cells through lactation. CI - Copyright (c) 2012 American Dairy Science Association. Published by Elsevier Inc. All rights reserved. FAU - Varshney, N AU - Varshney N AD - National Dairy Research Institute, Karnal 132001, India. FAU - Mohanty, A K AU - Mohanty AK FAU - Kumar, S AU - Kumar S FAU - Kaushik, J K AU - Kaushik JK FAU - Dang, A K AU - Dang AK FAU - Mukesh, M AU - Mukesh M FAU - Mishra, B P AU - Mishra BP FAU - Kataria, R AU - Kataria R FAU - Kimothi, S P AU - Kimothi SP FAU - Mukhopadhyay, T K AU - Mukhopadhyay TK FAU - Malakar, D AU - Malakar D FAU - Prakash, B S AU - Prakash BS FAU - Grover, S AU - Grover S FAU - Batish, V K AU - Batish VK LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Dairy Sci JT - Journal of dairy science JID - 2985126R RN - 0 (DNA, Complementary) SB - IM MH - Animals MH - Cattle/genetics MH - DNA, Complementary/genetics MH - Female MH - Gene Expression/genetics MH - Genes/*genetics MH - Lactation/*genetics MH - Milk/*cytology MH - *Quantitative Trait, Heritable MH - Real-Time Polymerase Chain Reaction/veterinary EDAT- 2012/05/23 06:00 MHDA- 2012/10/10 06:00 CRDT- 2012/05/23 06:00 PHST- 2011/04/13 00:00 [received] PHST- 2012/01/16 00:00 [accepted] PHST- 2012/05/23 06:00 [entrez] PHST- 2012/05/23 06:00 [pubmed] PHST- 2012/10/10 06:00 [medline] AID - S0022-0302(12)00270-6 [pii] AID - 10.3168/jds.2011-4442 [doi] PST - ppublish SO - J Dairy Sci. 2012 Jun;95(6):2935-45. doi: 10.3168/jds.2011-4442.