Epidermal stem cells are of major importance for tissue homeostasis, wound repair, tumor initiation, and gene therapy. Here we describe an in vivo regeneration assay to test for the ability of keratinocyte progenitors to maintain an epidermis over the long-term in vivo. Limiting dilution analysis of epidermal repopulating units in this in vivo regeneration assay at sequential time points allows the frequency of short-term (transit amplifying cell) and long-term (stem cell) repopulating cells to be quantified.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2783164 | PMC |
http://dx.doi.org/10.1007/978-1-60761-380-0_29 | DOI Listing |
Surv Ophthalmol
January 2025
Centre for Ocular Regeneration (CORE), L V Prasad Eye Institute, Hyderabad, Telangana, India; Prof. Krothapalli Ravindranath Ophthalmic Research Biorepository, LV Prasad Eye Institute, Hyderabad, Telangana, India.
Extracellular vesicles (EVs), defined as membrane-bound vesicles released from all cells, are being explored for their diagnostic and therapeutic role in dry eye disease (DED). We systematically shortlisted 32 articles on the role of EVs in diagnosing and treating DED. The systematic review covers the progress in the last 2 decades about the classification and isolation of EVs and their role in DED.
View Article and Find Full Text PDFNucleic Acids Res
January 2025
Research Center for Life Sciences Computing, Zhejiang Lab, Kechuang Avenue, Yuhang District, Hangzhou, Zhejiang, 311121, China.
The CRISPR-derived endoribonuclease Csy4 is a popular tool for controlling transgene expression in various therapeutically relevant settings, but adverse effects potentially arising from non-specific RNA cleavage remains largely unexplored. Here, we report a split-Csy4 architecture that was carefully optimized for in vivo usage. First, we separated Csy4 into two independent protein moieties whose full catalytic activity can be restored via various constitutive or conditional protein dimerization systems.
View Article and Find Full Text PDFBioact Mater
April 2025
Musculoskeletal Research Laboratory of Department of Orthopaedics & Traumatology, Innovative Orthopaedic Biomaterial and Drug Translational Research Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China.
Biodegradable magnesium (Mg) implant generally provides temporary fracture fixation and facilitates bone regeneration. However, the exact effects of generated Mg ions (Mg), hydrogen gas (H), and hydroxide ions (OH) by Mg degradation on enhancing fracture healing are not fully understood. Here we investigate the degradation of Mg intramedullary nail (Mg-IMN), revealing the generation of these degradation products around the fracture site during early stages.
View Article and Find Full Text PDFJ Biomed Mater Res A
January 2025
Marquette University School of Dentistry, Milwaukee, Wisconsin, USA.
In this study, a new hybrid nanoparticle composed of magnesium hydroxide and copper oxide (Mg(OH)/CuO) with an optimized ratio of magnesium (Mg) to copper (Cu) was designed and incorporated into a 3D-printed scaffold made of polycaprolactone (PCL) and gelatin. These hybrid nanostructures (MCNs) were prepared using a green, solvent-free method. Their topography, surface morphology, and structural properties were characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS).
View Article and Find Full Text PDFClin Implant Dent Relat Res
February 2025
Department of Oral Surgery and Implantology, Goethe University, Frankfurt am Main, Germany.
Objectives: This preclinical ex vivo porcine study aimed to evaluate the effects of two flap advancement techniques and periosteal suturing (PS) on graft material displacement during primary wound closure in guided bone regeneration (GBR). Secondary objectives included assessing flap advancement and the impact of soft tissue characteristics on graft displacement.
Materials And Methods: Standardized two-walled horizontal bone defects were created in second premolar sites of pig hemimandibles.
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!