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Sphingolipid metabolism orchestrates establishment of the hair follicle stem cell compartment.
J Cell Biol
April 2025
Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
Sphingolipids serve as building blocks of membranes to ensure subcellular compartmentalization and facilitate intercellular communication. How cell type-specific lipid compositions are achieved and what is their functional significance in tissue morphogenesis and maintenance has remained unclear. Here, we identify a stem cell-specific role for ceramide synthase 4 (CerS4) in orchestrating fate decisions in skin epidermis.
View Article and Find Full Text PDFAdvances in adhesion of microneedles for bioengineering.
J Mater Chem B
January 2025
School of Chemistry and Biological Engineering, Beijing Key Laboratory for Bioengineering and Sensing Technology, Daxing Research Institute, University of Science and Technology Beijing, Beijing 100083, P. R. China.
Microneedles have provided promising platforms in various fields thanks to their safety, painlessness, minimal invasiveness and ease of operation. The excellent adhesion of microneedles is the key characteristic to achieve long-term and comfortable treatment. However, a complex environment, such as the roughness of skin, various bodily fluids , and the movement of the body, presents great challenges to the adhesion characteristics of microneedles.
View Article and Find Full Text PDFNPT100-18A rescues mitochondrial oxidative stress and neuronal degeneration in human iPSC-based Parkinson's model.
BMC Neurosci
January 2025
Department of Operative Dentistry and Periodontology, University Hospital Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg, Erlangen, Germany.
Background: Parkinson's disease (PD) is a neurodegenerative disorder characterized by protein aggregates mostly consisting of misfolded alpha-synuclein (αSyn). Progressive degeneration of midbrain dopaminergic neurons (mDANs) and nigrostriatal projections results in severe motor symptoms. While the preferential loss of mDANs has not been fully understood yet, the cell type-specific vulnerability has been linked to a unique intracellular milieu, influenced by dopamine metabolism, high demand for mitochondrial activity, and increased level of oxidative stress (OS).
View Article and Find Full Text PDFThe effect of combined low-level nd: YAG laser with mesenchymal stem cells in the healing of diabetic wounds: an experimental study.
Arch Dermatol Res
January 2025
Department of Biomedical Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran.
Although the role of low-level laser therapy (LLLT) and human adipose-derived stem cells (hADSC) in accelerating diabetic wound healing has been proven, their synergistic effect is still debated. This study aimed to evaluate the individual and combined effects of LLLT and hADSC on wound healing and on biomechanical parameters in type 2 diabetic rabbits. In this experimental study, 40 rabbits with type 2 diabetes (induced by streptozotocin (STZ)) were included.
View Article and Find Full Text PDFDermal fibroblast-derived extracellular matrix (ECM) synergizes with keratinocytes in promoting re-epithelization and scarless healing of skin wounds: Towards optimized skin tissue engineering.
Bioact Mater
May 2025
Ministry of Education Key Laboratory of Diagnostic Medicine, and Department of Clinical Biochemistry, School of Clinical Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China.
Skin serves as the first-order protective barrier against the environment and any significant disruptions in skin integrity must be promptly restored. Despite significant advances in therapeutic strategies, effective management of large chronic skin wounds remains a clinical challenge. Dermal fibroblasts are the primary cell type responsible for remodeling the extracellular matrix (ECM) in wound healing.
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