research Spatiotemporal Dynamics of Sensory Neuron and Merkel-Cell Remodeling During Epidermal Homeostasis
Sensory neuron and Merkel cell changes in the skin happen independently during normal skin maintenance.
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research Pain Digital Biomarker Detection by Epidermal Biopotential Flexible Sensor and AI-Based System
A new pain-measuring system using sensors and AI can effectively detect pain in mice, which may help assess pain in humans and develop treatments.
research Loss of Epidermal PLCγ1 Induced Sebaceous Gland Hyperplasia and Sparse Hair
Removing PLCg1 from skin cells caused thicker oil glands and less hair in mice.
research White Lupin Cluster Root Acclimation to Phosphorus Deficiency and Root Hair Development Involve Unique Glycerophosphodiester Phosphodiesterases
White lupin uses specific genes to grow root hairs and access phosphorus when it's scarce.
research Conversion of the Nipple to Hair-Bearing Epithelia by Lowering Bone Morphogenetic Protein Pathway Activity at the Dermal-Epidermal Interface
Blocking a specific protein signal can make hair grow on mouse nipples.
research Inhibition of Metastatic Squamous Cell Carcinoma Development in Protein Kinase C Epsilon Transgenic Mice by Alpha-Difluoromethylornithine with Hair Follicle Degeneration and Hair Loss
The study investigated the effects of TPA-stimulated polyamine biosynthesis on metastatic squamous cell carcinoma (mSCC) development in protein kinase C epsilon (PKC epsilon) transgenic mice. It was found that TPA treatment significantly increased epidermal ornithine decarboxylase (ODC) activity and putrescine levels in these mice compared to wild-type littermates. The development of mSCC was completely prevented by administering alpha-difluoromethylornithine (DFMO), an ODC inhibitor, in the drinking water during TPA promotion. However, this treatment resulted in marked hair loss and a decrease in intact hair follicles in the transgenic mice. The findings suggested a link between TPA-induced ODC activity, putrescine accumulation, hair follicle maintenance, and mSCC development, with the observed hair loss being a novel side effect not previously reported in other cancer prevention models.
research The Majority of Multipotent Epidermal Stem Cells Do Not Protect Their Genome by Asymmetrical Chromosome Segregation
Most hair follicle stem cells do not protect their DNA by dividing it unevenly.
research The Regeneration of Caudal Epidermal Specializations in Lygodactylus Picturatus Keniensis (Gekkonidae, Lacertilia)
Lizards can regrow their tail scales with the same structure, distribution, and gender-specific features as the original ones, and this unique ability is not seen in adult mammals.
research Study of Seed Hair Growth in Populus Tomentosa, an Important Character of Female Floral Bud Development
Poplar seed hairs grow from the placenta at the ovary base, with endoreduplication playing a key role in their development, and share similar cellulose synthesis processes with cotton fibers.
research Genetic Deletion of TNFα Inhibits Ultraviolet Radiation-Induced Development of Cutaneous Squamous Cell Carcinomas in PKCε Transgenic Mice via Inhibition of Cell Survival Signals
The study demonstrated that the genetic deletion of TNFα in PKCε transgenic mice inhibited the development of cutaneous squamous cell carcinomas (SCC) induced by ultraviolet radiation (UVR) or the DMBA-TPA protocol. The absence of TNFα in these mice led to increased latency and decreased incidence of SCC. This inhibition was associated with reduced expression of TNFα receptors, cell proliferation markers, and metastatic markers, as well as decreased activation of transcription factors Stat3 and NF-kB, and reduced proliferation of hair follicle stem cells and epidermal hyperplasia. The findings provided genetic evidence linking TNFα to PKCε-mediated sensitivity to SCC development.
research Mechanical Force Drives the Initial Mesenchymal-Epithelial Interaction During Skin Organoid Development
Mechanical force is important for the first contact between skin cells and hair growth in mini-organs.
research ATP-Competitive mTOR Kinase Inhibitors Delay Plant Growth by Triggering Early Differentiation of Meristematic Cells Without Developmental Patterning Change
Certain inhibitors slow down plant growth by causing early cell specialization without changing the cell development pattern.
research The Zinc Finger Protein 3 of Arabidopsis Thaliana Regulates Vegetative Growth and Root Hair Development
The zinc finger protein 3 in Arabidopsis thaliana reduces plant growth and root hair development.
research A Simple In Vivo System for Studying Epithelialization, Hair Follicle Formation, and Invasion Using Primary Epidermal Cells from Wild-Type and Transgenic Ornithine Decarboxylase-Overexpressing Mouse Skin
The study presented a tracheal xenotransplantation assay as a simple in vivo system to evaluate epithelialization, hair follicle formation, and tumorigenesis using primary epidermal cells from wild-type and transgenic mice. This method involved seeding epithelial cells into deepithelialized rat tracheas, which were then transplanted into athymic nude mice. The study found that keratinocytes overexpressing ornithine decarboxylase (ODC) and infected with v-Ha-ras became invasive, penetrating all layers of the tracheal wall, similar to malignant skin carcinomas in ODC/Ras transgenic mice. The assay also demonstrated its utility in hair follicle reconstitution, showing that freshly harvested epithelial cells were more effective than cultured ones in forming hair follicles. The method proved advantageous for studying keratinocyte stem cell colonies and factors affecting hair follicle development, especially when cell numbers were limited.
research Epidermal Keratinocyte Stem Cells: Their Maintenance and Regulation
Skin stem cells are maintained by signals from nearby cells and vary in their ability to renew and mature.
research The Molecular Revolution in Cutaneous Biology: Noncoding RNAs as New Molecular Players in Dermatology and Cutaneous Biology
Non-coding RNAs are crucial for skin development and health.
research The Effects of Sonic, Desert, and Indian Hedgehog Signaling in Skin
Shh and Dhh affect skin development and can cause tumors, while Ihh does not.
research Growth Factors in Hair Organ Development and the Hair Growth Cycle
Growth factors are crucial for hair development and could help treat hair diseases.
research Hairless Controls Hair Fate Decision via Wnt/β-Catenin Signaling
The Hairless gene is crucial for hair cell development, affecting whether skin cells become hair or skin and oil gland cells.
research Histidine Decarboxylase Expression Influences the Neofolliculogenesis of Newborn Mouse Dermal Cells
The gene HDC is important for the development of hair follicles in newborn mice.
research Hair Follicle Development of Rex Rabbits Is Regulated Seasonally by Wnt10b/β-Catenin, TGFβ-BMP, IGF1, and EGF Signaling Pathways
Winter provides the best fur quality for Rex rabbits due to seasonal changes in specific signaling pathways.
research Identification of N6-Methyladenosine-Related Factors and the Prediction of the Regulatory Mechanism of Hair Follicle Development in Rex and Hycole Rabbits
N6-methyladenosine affects hair follicle development differently in Rex and Hycole rabbits.
research Effects of Administration of Vitamin A to Pregnant Dams on the Skin of the Fetuses of Albino Mice
Vitamin A during pregnancy can harm fetal skin development.
research Hairy Tale of Signaling in Hair Follicle Development and Cycling
Hair growth and development are controlled by specific signaling pathways.
research Histochemical Evidence of Mucosubstances in the Metaplastic Epidermis and Hair Follicles Produced In Vitro in the Presence of Excess Vitamin A
Excess vitamin A changes skin and hair follicle development and affects polysaccharide distribution.
research Impact of mTORC1 Inhibition on Keratinocyte Proliferation During Skin Tumor Promotion in Wild-Type and BK5.AktWT Mice
Rapamycin reduces skin cell growth and tumor development by affecting cell signaling in mice.
research Becker’s Nevus Syndrome in a Pediatric Female Patient
A girl with Becker's nevus syndrome showed good improvement in breast development using spironolactone.
research Chromatin Architectural Protein CTCF Regulates Terminal Keratinocyte Differentiation in the Developing Epidermis and Hair Follicles
CTCF protein is essential for skin and hair follicle development in mice.
research Loss of Keratin 10 Is Accompanied by Increased Sebocyte Proliferation and Differentiation
Without keratin 10, there's more growth and development of oil-producing skin cells.
research Expression of Anti-Aging Type-XVII Collagen (COL17A1/BP180) in Hair Follicle-Associated Pluripotent (HAP) Stem Cells During Differentiation
Hair stem cells produce a protein called COL17A1 that plays a key role in their development and is linked to hair thinning and baldness.