Metabolic reprogramming of muscle stem cells modulates myogenic cell fate. In this issue of Cell Stem Cell, Ryall et al. (2015) show that SIRT1, a NAD(+)-dependent histone deacetylase, acts as an epigenetic regulator that connects changes in satellite cell metabolism with changes in the transcriptional machinery toward myogenic commitment.
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http://dx.doi.org/10.1016/j.stem.2015.01.006 | DOI Listing |
J Anat
January 2025
Institute of Sports Medicine Copenhagen, Department of Orthopedic Surgery, Copenhagen University Hospital - Bispebjerg-Frederiksberg, Copenhagen, Denmark.
Tendon injuries and disorders associated with mechanical tendon overuse are common musculoskeletal problems. Even though tendons play a central role in human movement, the intrinsic healing process of tendon is very slow. So far, it is known that tendon cell activity is supported by several interstitial cells within the tendon.
View Article and Find Full Text PDFSports Med
January 2025
School of Behavioural and Health Sciences, Australian Catholic University, Melbourne, VIC, Australia.
Following anterior cruciate ligament (ACL) injury, quadriceps muscle atrophy persists despite rehabilitation, leading to loss of lower limb strength, osteoarthritis, poor knee joint health and reduced quality of life. However, the molecular mechanisms responsible for these deficits in hypertrophic adaptations within the quadriceps muscle following ACL injury and reconstruction are poorly understood. While resistance exercise training stimulates skeletal muscle hypertrophy, attenuation of these hypertrophic pathways can hinder rehabilitation following ACL injury and reconstruction, and ultimately lead to skeletal muscle atrophy that persists beyond ACL reconstruction, similar to disuse atrophy.
View Article and Find Full Text PDFVet Sci
December 2024
College of Veterinary Medicine, Yangzhou University/Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou 225009, China.
This study investigated the effects of long-term serum starvation on autophagy, metabolism, and differentiation of porcine skeletal muscle satellite cells (SMSCs) and elucidated the role of autophagy in skeletal muscle development. Our findings provide a theoretical basis for improving meat production in domestic pigs. The SMSCs isolated and preserved in our laboratory were revived and divided into six groups based on the culture medium serum concentration to simulate varying levels of serum starvation: 20% serum (control group), 15% serum (mild serum starvation group), 5% serum (severe serum starvation group), and their autophagy inhibition groups supplemented with 3-methyladenine.
View Article and Find Full Text PDFFood Res Int
February 2025
Department of Chemical & Biological Engineering, Tufts University Medford MA USA; Tufts University Center for Cellular Agriculture (TUCCA), Tufts University Medford MA USA. Electronic address:
Cultivated meat, the process of generating meat in vitro without sacrificing animals, is a promising alternative to the traditional practice of livestock agriculture. However, the success of this field depends on finding sustainable and economical replacements for animal-derived and expensive fetal bovine serum (FBS) that is typically used in cell culture processes. Here, we outline an effective screening process to vet the suitability of microbial lysates to support the growth of immortalized bovine satellite cells (iBSCs) and mackerel (Mack1) cells.
View Article and Find Full Text PDFOcul Immunol Inflamm
January 2025
Ocular inflammation and infection division, Department of Ophthalmology, Phramongkutklao College of Medicine, Bangkok, Thailand.
Purpose: This multicenter study aimed to investigate the clinical characteristics and factors associated with specific viral pathogens in patients with acute retinal necrosis (ARN).
Methods: A retrospective multicenter cohort study included ARN patients who underwent aqueous or vitreous polymerase chain reaction (PCR) testing. Multivariable mixed-effects Poisson regression was used to identify factors associated with viral pathogens.
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