Suppr超能文献

刺鼠信号蛋白及其受体作为牛肌肉内和体脂沉积的潜在分子标记物。

Agouti Signaling Protein and Its Receptors as Potential Molecular Markers for Intramuscular and Body Fat Deposition in Cattle.

作者信息

Liu Yinuo, Albrecht Elke, Schering Lisa, Kuehn Christa, Yang Runjun, Zhao Zhihui, Maak Steffen

机构信息

College of Animal Science, Jilin University, Changchun, China.

Institute of Muscle Biology and Growth, Leibniz Institute for Farm Animal Biology, Dummerstorf, Germany.

出版信息

Front Physiol. 2018 Mar 6;9:172. doi: 10.3389/fphys.2018.00172. eCollection 2018.

Abstract

Transcriptome analyses of bovine muscle tissue differing in intramuscular fat (IMF) content identified agouti signaling protein (ASIP) as a promising candidate gene for fat deposition. The protein is secreted from adipocytes and may serve as a signaling molecule in cross-talk between adipocytes and muscle fibers or other cells. Known receptors for ASIP are the melanocortin receptors (e.g., MC4R) and attractin (ATRN). The present study was conducted to determine relationships between the expression of and its receptors in different bovine tissues with fat deposition. Adipose tissues, liver, and longissimus muscle tissue were collected from 246 F-generation bulls (Charolais × Holstein cross) and gene expression was measured with RT-qPCR. During analysis of subcutaneous fat (SCF) of all bulls, 17 animals were identified with a transposon-derived transcript (Exon2C) inserted in the gene and dramatically increased mRNA levels. Significant correlations between normalized mRNA values of SCF and phenotypic traits related to fat deposition were found in bulls without Exon2C. Three retrospectively assigned groups [Exon2C, = 17; high carcass fat (HCF), = 20; low carcass fat (LCF), = 20] were further analyzed to verify expression differences and elucidate molecular reasons. Expression of could be detected in isolated muscle fibers and adipocytes of Exon2C bulls in contrast to HCF and LCF bulls, indicating ectopic expression if the transposon is present. Among adipose tissues, highest mRNA levels were measured in SCF with significantly higher values in HCF compared to LCF bulls (1.6-fold, < 0.05). However, the protein abundance was below the detection limit in all bulls. Potential ASIP receptors were detected in most investigated tissues. The expression of was higher and of was lower in several tissues of LCF compared to HCF bulls, whereas was not differentially expressed. Bulls of the Exon2C group had lower mRNA values than HCF and LCF bulls in perirenal fat (PF), but higher ( < 0.05) values in muscle. Receptors were also expressed in tissues where mRNA was not detected. Consequently, those tissues could be targets for ASIP if it circulates.

摘要

对肌内脂肪(IMF)含量不同的牛肌肉组织进行转录组分析,确定刺鼠信号蛋白(ASIP)是脂肪沉积的一个有潜力的候选基因。该蛋白由脂肪细胞分泌,可能在脂肪细胞与肌纤维或其他细胞之间的相互作用中作为信号分子。已知的ASIP受体是黑皮质素受体(如MC4R)和吸引素(ATRN)。本研究旨在确定不同牛组织中ASIP及其受体的表达与脂肪沉积之间的关系。从246头F代公牛(夏洛莱×荷斯坦杂交)采集脂肪组织、肝脏和背最长肌组织,并用RT-qPCR测量基因表达。在分析所有公牛的皮下脂肪(SCF)时,鉴定出17头动物的ASIP基因中插入了一个转座子衍生转录本(Exon2C),导致ASIP mRNA水平显著升高。在没有Exon2C的公牛中,发现SCF的标准化mRNA值与脂肪沉积相关的表型性状之间存在显著相关性。进一步分析三个回顾性分组[Exon2C组,n = 17;高胴体脂肪(HCF)组,n = 20;低胴体脂肪(LCF)组,n = 20],以验证表达差异并阐明分子原因。与HCF和LCF公牛相比,在Exon2C公牛的分离肌纤维和脂肪细胞中可检测到ASIP的表达,表明如果存在转座子,则ASIP会异位表达。在脂肪组织中,SCF中ASIP mRNA水平最高,HCF公牛中的值显著高于LCF公牛(1.6倍,P < 0.05)。然而,所有公牛中的蛋白丰度均低于检测限。在大多数研究组织中检测到了潜在的ASIP受体。与HCF公牛相比,LCF公牛的几个组织中ASIP的表达较高而ATRN的表达较低,而MC4R没有差异表达。Exon2C组公牛的肾周脂肪(PF)中ASIP mRNA值低于HCF和LCF公牛,但肌肉中的值较高(P < 0.05)。受体也在未检测到ASIP mRNA的组织中表达。因此,如果ASIP在循环中,这些组织可能是其作用靶点。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/62df/5845533/39f5f4631cb1/fphys-09-00172-g0001.jpg

相似文献

6
Transcriptome changes favoring intramuscular fat deposition in the longissimus muscle following castration of bulls.
J Anim Sci. 2013 Oct;91(10):4692-704. doi: 10.2527/jas.2012-6089. Epub 2013 Jul 26.

引用本文的文献

3
Skin transcriptomic and selection signature analyses identify as a key gene in cattle coat color determination.
Front Genet. 2025 Apr 28;16:1577647. doi: 10.3389/fgene.2025.1577647. eCollection 2025.
7
Serum levels of hormones regulating appetite in patients with cystic fibrosis - a single-center, cross-sectional study.
Front Endocrinol (Lausanne). 2022 Oct 13;13:992667. doi: 10.3389/fendo.2022.992667. eCollection 2022.

本文引用的文献

3
Transcriptome differences in the rumen of beef steers with variation in feed intake and gain.
Gene. 2016 Jul 15;586(1):12-26. doi: 10.1016/j.gene.2016.03.034. Epub 2016 Mar 29.
4
Role of the cAMP Pathway in Glucose and Lipid Metabolism.
Handb Exp Pharmacol. 2016;233:29-49. doi: 10.1007/164_2015_32.
5
Melanocortin agonists stimulate lipolysis in human adipose tissue explants but not in adipocytes.
BMC Res Notes. 2015 Oct 12;8:559. doi: 10.1186/s13104-015-1539-4.
6
Expression of Selenoprotein Genes Is Affected by Obesity of Pigs Fed a High-Fat Diet.
J Nutr. 2015 Jul;145(7):1394-401. doi: 10.3945/jn.115.211318. Epub 2015 May 13.
8
Transcriptional background of beef marbling - novel genes implicated in intramuscular fat deposition.
Meat Sci. 2014 May;97(1):32-41. doi: 10.1016/j.meatsci.2013.12.017. Epub 2014 Jan 4.
9
Family of melanocortin receptor (MCR) genes in mammals-mutations, polymorphisms and phenotypic effects.
J Appl Genet. 2013 Nov;54(4):461-72. doi: 10.1007/s13353-013-0163-z. Epub 2013 Aug 31.
10
The liver: Key in regulating appetite and body weight.
Adipocyte. 2012 Oct 1;1(4):259-264. doi: 10.4161/adip.21448.

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍。

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索

文档翻译

学术文献翻译模型,支持多种主流文档格式。

立即体验