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Quorum sensing molecules as a novel microbial factor impacting muscle cells.
Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease ( IF 4.2 ) Pub Date : 2019-12-20 , DOI: 10.1016/j.bbadis.2019.165646
Anton De Spiegeleer 1 , Dirk Elewaut 2 , Nele Van Den Noortgate 3 , Yorick Janssens 4 , Nathan Debunne 4 , Selien Van Langenhove 4 , Srinath Govindarajan 2 , Bart De Spiegeleer 4 , Evelien Wynendaele 4
Affiliation  

Skeletal muscle makes up the largest part of human body mass and a good maintenance of this organ is essential for general health. In accordance, muscle wasting, a frequent phenomenon in many diseases, is associated with functional decline and a decrease in quality of life. Unfortunately, due to a lack of knowledge of the underlying pathophysiology, no targeted therapies exist today to encounter muscle wasting. Recent studies suggest a role for the gut microbiome in muscle wasting, without the mediators of this gut-muscle axis being identified. Here we evaluated the possible effects of 75 quorum sensing molecules (QSM), traditionally only seen as intra-bacterial communication molecules, on C2C12 muscle cells, studying viability, differentiation, inflammation, mitochondrial changes and protein degradation as biological outcomes. The responses were evaluated using different approaches: median absolute deviation, quartiles, strictly standardized mean difference and robust strictly standardized mean difference. This study resulted in 30 QSM, with effects observed on C2C12 cells. Known producers of the 27 peptide QSM belong to species of the genus Staphylococcus, Streptococcus, Enterococcus, Bacillus, Lactobacillus and Escherichia, while the 3 non-peptide QSM are produced by a broad range of Gram-positive and Gram-negative bacteria. Altogether, these proof-of-concept findings provide the first evidence that QSM produced by microbiota play a role in the gut-muscle axis, opening new perspectives for diagnostic and therapeutic targets in muscle wasting diseases.

中文翻译:

群体感应分子是一种影响肌肉细胞的新型微生物因子。

骨骼肌是人体最大的组成部分,对这一器官的良好维护对于整体健康至关重要。因此,肌肉消瘦是许多疾病中的常见现象,与功能下降和生活质量下降有关。不幸的是,由于缺乏对潜在病理生理学的了解,因此如今不存在针对肌肉消瘦的靶向疗法。最近的研究表明肠道微生物组在肌肉消瘦中的作用,但未确定该肠道肌肉轴的介体。在这里,我们评估了传统上仅被视为细菌内部交流分子的75个群体感应分子(QSM)对C2C12肌肉细胞的可能作用,并研究了其活力,分化,炎症,线粒体变化和蛋白质降解等生物学结果。使用不同的方法评估了响应:中位数绝对偏差,四分位数,严格标准化的均值差和鲁棒性严格标准化的均值差。这项研究产生了30个QSM,并观察到了C2C12细胞的作用。27种肽QSM的已知生产者属于葡萄球菌,链球菌,肠球菌,芽孢杆菌,乳杆菌和大肠埃希氏菌,而3种非肽QSM则由多种革兰氏阳性和革兰氏阴性细菌生产。总之,这些概念验证的发现提供了第一个证据,即微生物群产生的QSM在肠道肌肉轴中起作用,为肌肉萎缩性疾病的诊断和治疗靶标开辟了新的前景。严格标准化的均值差和鲁棒性严格标准化的均值差。这项研究产生了30个QSM,并观察到了C2C12细胞的作用。27种肽QSM的已知生产者属于葡萄球菌,链球菌,肠球菌,芽孢杆菌,乳杆菌和大肠埃希氏菌,而3种非肽QSM则由多种革兰氏阳性和革兰氏阴性细菌生产。总之,这些概念验证的发现提供了第一个证据,即微生物群产生的QSM在肠道肌肉轴中起作用,为肌肉萎缩性疾病的诊断和治疗靶标开辟了新的前景。严格标准化的均值差和鲁棒性严格标准化的均值差。这项研究产生了30个QSM,并观察到了对C2C12细胞的影响。27种肽QSM的已知生产者属于葡萄球菌,链球菌,肠球菌,芽孢杆菌,乳杆菌和大肠埃希氏菌,而3种非肽QSM则由多种革兰氏阳性和革兰氏阴性细菌生产。总之,这些概念验证的发现提供了第一个证据,即微生物群产生的QSM在肠道肌肉轴中起作用,为肌肉萎缩性疾病的诊断和治疗靶标开辟了新的前景。肠球菌,芽孢杆菌,乳杆菌和大肠埃希氏菌,而这三种非肽QSM是由多种革兰氏阳性和革兰氏阴性细菌产生的。总之,这些概念验证的发现提供了第一个证据,即微生物群产生的QSM在肠道肌肉轴中起作用,为肌肉萎缩性疾病的诊断和治疗靶标开辟了新的前景。肠球菌,芽孢杆菌,乳杆菌和大肠埃希氏菌,而这三种非肽QSM是由多种革兰氏阳性和革兰氏阴性细菌产生的。总之,这些概念验证的发现提供了第一个证据,即微生物群产生的QSM在肠道肌肉轴中起作用,为肌肉萎缩性疾病的诊断和治疗靶标开辟了新的前景。
更新日期:2019-12-20
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