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Total 39 results found since Jan 2013.

Genes, Vol. 14, Pages 1224: miR-497 Regulates LATS1 through the PPARG Pathway to Participate in Fatty Acid Synthesis in Bovine Mammary Epithelial Cells
In this study, microRNA sequencing was performed on mammary gland tissues collected from cows during early, peak, and late lactation to determine miRNA expression profiles. Differentially expressed miRNA (miR-497) was selected for functional studies of fatty acid substitution. Simulants of miR-497 impaired fat metabolism [triacylglycerol (TAG) and cholesterol], whereas knockdown of miR-497 promoted fat metabolism in bovine mammary epithelial cells (BMECs) in vitro. In addition, in vitro experiments on BMECs showed that miR-497 could down-regulate C16:1, C17:1, C18:1, and C20:1 as well as long-chain polyunsaturated fats. Th...
Source: Genes - June 5, 2023 Category: Genetics & Stem Cells Authors: Shuangfeng Chu Yi Yang Mudasir Nazar Zhi Chen Zhangping Yang Tags: Article Source Type: research

mTORC2 ‐AKT‐LAT1 signalling participates in methionine‐induced β‐CASEIN expression in mammary epithelial cells of dairy cows
This study investigated the role of the mammalian target of rapamycin complex 2 (mTORC2)-protein kinase B (AKT) signalling in methionine (Met)-induced L-type amino acid transporter 1 (LAT1) expression and milk protein production. Primary mammary epithelial cells (MECs) from mammary parenchymal tissues of three lactating cows and MAC-T bovine MECs were cultured with or without 0.6  mM Met. Rapamycin-insensitive companion of mTOR (RICTOR) siRNA, the mTORC1 inhibitor rapamycin and the AKT activator SC79 were used to evaluate the effects of mTORC2-AKT signalling on Met-induced LAT1 expression and function. Each experiment wa...
Source: Journal of Animal Physiology and Animal Nutrition - April 6, 2023 Category: Zoology Authors: Xiaoyu Duan, Chuanping Liu, Xiaoqing Gong, Yang Yang, Hongtao Jiao, Ye Lin, Xiaoming Hou Tags: ORIGINAL ARTICLE Source Type: research

mTORC2 ‐AKT‐LAT1 Signalling Participates in Methionine‐induced β‐CASEIN Expression in Mammary Epithelial Cells of Dairy Cows
This study investigated the role of the mammalian target of rapamycin complex 2 (mTORC2)-protein kinase B (AKT) signalling in methionine (Met)-induced L-type amino acid transporter 1 (LAT1) expression and milk protein production. Primary mammary epithelial cells (MECs) from mammary parenchymal tissues of 3 lactating cows and MAC-T bovine MECs were cultured with or without 0.6 mM Met. Rapamycin-insensitive companion of mTOR (RICTOR) siRNA, the mTORC1 inhibitor rapamycin and the AKT activator SC79 were used to evaluate the effects of mTORC2-AKT signalling on Met-induced LAT1 expression and function. Each experiment was perfo...
Source: Journal of Animal Physiology and Animal Nutrition - March 25, 2023 Category: Zoology Authors: Xiaoyu Duan, Chuanping Liu, Xiaoqing Gong, Yang Yang, Hongtao Jiao, Ye Lin, Xiaoming Hou Tags: ORIGINAL ARTICLE Source Type: research

Sphingosine 1-phosphate receptor 2 promotes erythrocyte clearance by vascular smooth muscle cells in intraplaque hemorrhage through MFG-E8 production
Cell Signal. 2022 Jul 26:110419. doi: 10.1016/j.cellsig.2022.110419. Online ahead of print.ABSTRACTIntraplaque hemorrhage (IPH) accelerates atherosclerosis progression. To scavenge excessive red blood cells (RBCs), vascular smooth muscle cells (VSMCs) with great plasticity may function as phagocytes. Here, we investigated the erythrophagocytosis function of VSMCs and possible regulations involved. Based on transcriptional microarray analysis, Kyoto Encyclopedia of Genes and Genomes pathway enrichment analysis showed that genes up-regulated in human carotid atheroma with IPH were enriched in functions of phagocytic activiti...
Source: Atherosclerosis - July 29, 2022 Category: Cardiology Authors: Daorong Pan Wen Wu Guangfeng Zuo Xiangrong Xie Hui Li Xiaomin Ren Chaohua Kong Wenying Zhou Zihan Zhang Martin Waterfall Shaoliang Chen Source Type: research

Novel Mechanisms of Exosome-Mediated Phagocytosis of Dead Cells in Injured Heart
Conclusions: Our data demonstrates that exosome-associated MFGE8 on one hand enhances opsonization of dead cells and on the other activates phagocytic signaling thus augmenting removal of apoptotic cells, resolution of inflammation and therefore efficient cardiac recovery after injury.PMID:34623174 | DOI:10.1161/CIRCRESAHA.120.317900
Source: Circulation Research - October 8, 2021 Category: Cardiology Authors: Mallikarjun Patil Sherin Saheera Praveen K Dubey Asher Kahn-Krell Prem Kumar Govindappa Sarojini Singh Sultan Tousif Qinkun Zhang Hind Lal Jianyi Zhang Gangjian Qin Prasanna Krishnamurthy Source Type: research

Connecting Metabolism to Mastitis: Hyperketonemia Impaired Mammary Gland Defenses During a Streptococcus uberis Challenge in Dairy Cattle
β-hydroxybutyrate (BHB) has been associated with disease incidence in early lactation dairy cattle, but such associations do not demonstrate causation. Therefore, the objective of this study was to examine the effects of BHB during an intramammary Streptococcus uberis challenge. A secondary objective was to elucidate the mechanisms behind BHB effects on cytokine transcript abundance using the RAW 264.7 cell line. Late lactation multiparous dairy cows (n = 12) were continuously infused intravenously with either BHB to induce hyperketonemia (target concentration: 1.8 mM) or with saline (CON) for 72 h during a S. uberis int...
Source: Frontiers in Immunology - June 29, 2021 Category: Allergy & Immunology Source Type: research

MiR-204-5p promotes lipid synthesis in mammary epithelial cells by targeting SIRT1.
CONCLUSION: Our findings showed that miR-204-5p can promote the synthesis of milk lipids in mammary epithelial cells by targeting SIRT1. PMID: 33333715 [PubMed - in process]
Source: Biochemical and Biophysical Research communications - December 17, 2020 Category: Biochemistry Authors: Zhang M, Cao M, Kong L, Liu J, Wang Y, Song C, Chen X, Lai M, Fang X, Chen H, Zhang C Tags: Biochem Biophys Res Commun Source Type: research

MFG-E8 attenuates inflammation in subarachnoid hemorrhage by driving microglial M2 polarization.
Abstract Increasing evidence suggests that microglial polarization plays an important role in the pathological processes of neuroinflammation following subarachnoid hemorrhage (SAH). Previous studies indicated that milk fat globule-epidermal growth factor-8 (MFG-E8) has potential anti-apoptotic and anti-inflammatory effects in cerebral ischemia. However, the effects of MFG-E8 on microglial polarization have not been evaluated after SAH. Therefore, the aim of this study was to explore the role of MFG-E8 in anti-inflammation, and its effects on microglial polarization following SAH. We established the SAH model via ...
Source: Experimental Neurology - November 24, 2020 Category: Neurology Authors: Gao Y, Tao T, Wu D, Zhuang Z, Lu Y, Wu L, Liu G, Zhou Y, Zhang D, Wang H, Dai W, Li W, Hang CH Tags: Exp Neurol Source Type: research

MFGE8 is down-regulated in cardiac fibrosis and attenuates endothelial-mesenchymal transition through Smad2/3-Snail signalling pathway.
In conclusion, our experiments indicate that MFGE8 might play a protective role in TGF-β1-induced EndMT and might be a potential therapeutic target for cardiac fibrosis. PMID: 32945126 [PubMed - as supplied by publisher]
Source: J Cell Mol Med - September 16, 2020 Category: Molecular Biology Authors: Wang B, Ge Z, Wu Y, Zha Y, Zhang X, Yan Y, Xie Y Tags: J Cell Mol Med Source Type: research