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Transcriptome microRNA profiling of bovine mammary epithelial cells challenged with Escherichia coli or Staphylococcus aureus bacteria reveals pathogen directed microRNA expression profiles
Download2014
Zhao, Xin, Liang, Guanxiang, Jin, Weiwu, Guan, Leluo, Beaudoin, Frédéric, Ibeagha-Awemu, Eveline M.
Background MicroRNAs (miRNAs) can post-transcriptionally regulate gene expression and have been shown to be critical regulators to the fine-tuning of epithelial immune responses. However, the role of miRNAs in bovine responses to E. coli and S. aureus, two mastitis causing pathogens, is not well...
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Systematic microRNAome profiling reveals the roles of microRNAs in milk protein metabolism and quality: Insights on low-quality forage utilization
Download2016
Wang, Diming, Sun, Huizeng, Liu, Jianxin, Guan, Le Luo, Wang, Bing, Liang, Guanxiang
In this study, we investigated the molecular regulatory mechanisms of milk protein production in dairy cows by studying the miRNAomes of five key metabolic tissues involved in protein synthesis and metabolism from dairy cows fed high- and low-quality diets. In total, 340, 338, 337, 330, and 328...
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Roles of small RNAs in the effects of nutrition on apoptosis and spermatogenesis in the adult testis
Download2015
Malecki, Irek A., Martin, Graeme B., Cozens, Greg, Hawken, Penelope A.R., Liang, Guanxiang, Guan, Yongjuan, Vercoe, Philip E., Guan, Le Luo
We tested whether reductions in spermatozoal quality induced by under-nutrition are associated with increased germ cell apoptosis and disrupted spermatogenesis, and whether these effects are mediated by small RNAs. Groups of 8 male sheep were fed for a 10% increase or 10% decrease in body mass...
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Potential regulatory role of microRNAs in the development of bovine gastrointestinal tract during early life
Download2014
Liang, Guanxiang, Bao, Hua, Guan, Leluo, Griebel, Philip J., Stothard, Paul, McFadden, Thomas B., Malmuthuge, Nilusha
This study aimed to investigate the potential regulatory role of miRNAs in the development of gastrointestinal tract (GIT) during the early life of dairy calves. Rumen and small intestinal (mid-jejunum and ileum) tissue samples were collected from newborn (30 min after birth; n = 3), 7-day-old...
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2014
Jin, Weiwu, He, Maolong, Guan, Leluo, Romao, Josue M., McAllister, Tim
Background MicroRNAs (miRNAs) are small non-coding RNAs found to regulate several biological processes including adipogenesis. Understanding adipose tissue regulation is critical for beef cattle as fat is an important determinant of beef quality and nutrient value. This study analyzed the...
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Genome-wide whole blood microRNAome and transcriptome analyses revealed miRNA-mRNA regulated host response to foodborne pathogen Salmonella infection in swine
Download2015-07-31
Arantes, Adriano S., Tuggle, Christopher K., Guan, Le L., Bearson, Shawn M.D., Sun, Xu, Plastow, Graham S., Kommadath, Arun, Bao, Hua, Stothard, Paul, Liang, Guanxiang
To understand the role of miRNAs in regulating genes involved in host response to bacterial infection and shedding of foodborne pathogens, a systematic profiling of miRNAs and mRNAs from the whole blood of pigs upon Salmonella challenge was performed. A total of 62 miRNAs were differentially...
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Elucidation of molecular mechanisms of physiological variations between bovine subcutaneous and visceral fat depots under different nutritional regimes
Download2013
Jin, Weiwu, He, Maolong, Guan, Leluo, Romao, Josue M., McAllister, Tim
Adipose tissue plays a critical role in energy homeostasis and metabolism. There is sparse understanding of the molecular regulation at the protein level of bovine adipose tissues, especially within different fat depots under different nutritional regimes. The objective of this study was to...
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Comparative transcriptomic analysis of rectal tissue from beef steers revealed reduced host immunity in Escherichia coli O157:H7 super-shedders
Download2016-03-09
McAllister, Tim A., Wang, Ou, Plastow, Graham, Stanford, Kim, Liang, Guanxiang, Guan, Le L., Selinger, Brent
Super-shedder cattle are a major disseminator of E. coli O157:H7 into the environment, and the terminal rectum has been proposed as the primary E. coli O157:H7 colonization site. This study aimed to identify host factors that are associated with the super-shedding process by comparing...
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2009
Grant, Jason, Stothard, Paul, Moore, Stephen S., Guan, Leluo, Jin, Weiwu
Background MicroRNAs (miRNAs) are a family of ~22 nucleotide small RNA molecules which regulate gene expression by fully or partially binding to their complementary sequences in mRNAs or promoters. A large number of miRNAs and their expression patterns have been reported in human, mouse and rat....