Following an injury, the extracellular matrix (ECM) undergoes dramatic remodeling to facilitate tissue repair. In a new study, Lukjanenko and colleagues show how an age-associated change in this process affects the regenerative ability of muscle stem cells (MuSCs).
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SARS-CoV-2 infection of human pluripotent stem cell-derived vascular cells reveals smooth muscle cells as key mediators of vascular pathology during infection.
Nat Commun
December 2024
Whitehead Institute for Biomedical Research, Cambridge, MA, 02142, USA.
Although respiratory symptoms are the most prevalent disease manifestation of infection by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), nearly 20% of hospitalized patients are at risk for thromboembolic events. This prothrombotic state is considered a key factor in the increased risk of stroke, which is observed clinically during both acute infection and long after symptoms clear. Here, we develop a model of SARS-CoV-2 infection using human-induced pluripotent stem cell-derived endothelial cells (ECs), pericytes (PCs), and smooth muscle cells (SMCs) to recapitulate the vascular pathology associated with SARS-CoV-2 exposure.
View Article and Find Full Text PDFMuscle-Derived Bioactive Factors: MyoEVs and Myokines.
Cell Prolif
December 2024
Key Laboratory of Organ Regeneration and Reconstruction, State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.
Overview of the functions and applications of myokines and MyoEVs.
View Article and Find Full Text PDFThe effect of calf muscular vein thrombosis on the prognosis within one year postoperatively of geriatric hip fracture patients: a propensity score-matched analysis.
BMC Geriatr
December 2024
Department of Orthopedic Surgery, West China Hospital, Orthopedic Research Institute, Sichuan University, Chengdu, Sichuan, China.
Introduction: Calf muscular vein thrombosis (CMVT) is a type of distal deep vein thrombosis, which is common in geriatric hip fracture patients. However, studies focusing on whether the orthopedic operation has an impact on the prognosis of geriatric hip fracture patients with CMVT are very limited. Therefore, the aim of this study was to explore whether geriatric hip fractures with CMVT affect the mortality of patients within one year postoperatively.
View Article and Find Full Text PDFElevated EBF2 in mouse but not pig drives the progressive brown fat lineage specification via chromatin activation.
J Adv Res
December 2024
College of Animal Science, Shandong Provincial Key Laboratory for Livestock Germplasm Innovation & Utilization, Shandong Agricultural University, Taian, China; College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China. Electronic address:
Brown adipose tissue (BAT) is responsible for non-shivering thermogenesis, but it is absent in some mammals, including pigs. During development, BAT progenitors are derived from paired box 7 (Pax7)-expressing somitic mesodermal stem cells, which also give rise to skeletal muscle. However, the intrinsic mechanisms underlying the fate decisions between brown fat and muscle progenitors remain elusive.
View Article and Find Full Text PDFPreliminary study on the preparation of lyophilized acellular nerve scaffold complexes from rabbit sciatic nerves with human umbilical cord mesenchymal stem cells.
World J Stem Cells
December 2024
Department of Orthopedics, Children's Hospital of Fudan University & National Children's Medical Center, Shanghai 201102, China.
Background: The gold standard of care for patients with severe peripheral nerve injury is autologous nerve grafting; however, autologous nerve grafts are usually limited for patients because of the limited number of autologous nerve sources and the loss of neurosensory sensation in the donor area, whereas allogeneic or xenografts are even more limited by immune rejection. Tissue-engineered peripheral nerve scaffolds, with the morphology and structure of natural nerves and complex biological signals, hold the most promise as ideal peripheral nerve "replacements".
Aim: To prepare allogenic peripheral nerve scaffolds using a low-toxicity decellularization method, and use human umbilical cord mesenchymal stem cells (hUC-MSCs) as seed cells to cultivate scaffold-cell complexes for the repair of injured peripheral nerves.
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