November 2023 in “Frontiers in veterinary science” In this study, researchers used yaks as a natural model to investigate hair growth mechanisms, overcoming previous limitations by establishing in vitro models of hair follicle-associated cells and optimizing methods for cell culture and differentiation.
December 2021 in “INDIGO (University of Illinois at Chicago)” This study used single-cell RNA sequencing to characterize 19 distinct cell populations in sheep hair follicles, uncovering differentiation signatures and intercellular communication that may influence wool curvature and sheep breeding.
May 2020 in “Research Square (Research Square)” This study used cashmere goats to reveal distinct intermediate states of dermal papilla cells, each with specific roles in hair growth, shedding, and regeneration.
164 citations
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February 2010 in “Journal of Cell Science” This study demonstrates that stem cells from human foreskins, which lack hair follicles, can differentiate into melanocytes and migrate to the epidermis, potentially altering our understanding of pigmentation disorders.
159 citations
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September 2018 in “Journal of Investigative Dermatology” This study identified two cell surface markers, FAP and CD90, that distinguish between papillary and reticular fibroblasts in human skin, suggesting distinct functions and distribution in dermal layers.
78 citations
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June 2003 in “Journal of the American Academy of Dermatology” This article reviews the autonomous functioning and complex interactions within hair follicles, emphasizing their unique composition and differentiation pathways, but does not report new research findings.
72 citations
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January 1983 in “The Anatomical Record” This study found that epidermal growth factor treatment in male mice delayed normal skin development, inhibiting hair growth and follicle development by maintaining birth-level cell proliferation and differentiation for several days.
37 citations
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February 2005 in “Journal of Investigative Dermatology” This research suggests that defects in keratinocyte differentiation due to putrescine accumulation in SSAT transgenic mice lead to skin changes and hair loss, and reducing putrescine can promote hair regrowth.
28 citations
,
July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that cultured papilla cells can induce follicle formation and hair growth when combined with different epidermal and dermal cells, highlighting their powerful inductive properties and potential for dermatological applications.
7 citations
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December 2019 in “Experimental and Therapeutic Medicine” This study examined the effects of WNT10B on dermal papilla cells in vitro, finding that it alters gene expression, decreases protein synthesis, and upregulates a specific signaling pathway, potentially influencing hair follicle morphogenesis.
5 citations
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September 2015 in “PubMed” This article provides an overview of the biological process of skin wound healing, detailing the roles of keratinocytes, dermal cells, and trichogenesis without presenting new experimental results.
April 2026 in “International Journal of Drug Delivery Technology” This retrospective study at a tertiary care hospital observed that follicular tumors were the most common type of skin adnexal tumors (42.9%) among 42 analyzed cases, with malignancies making up 7.1% of the cases.
April 2025 in “International Journal of Pharmaceutical Sciences Review and Research” This study found that SesZen-Bio TM, a proprietary extract from Sesbania grandiflora leaves, increased proliferation of hair cells and hair shaft length in vitro and ex vivo, potentially due to activation of the Wnt/β-catenin signaling and stem cell differentiation pathways.
April 2018 in “Journal of Investigative Dermatology” This study found that treating human dermal fibroblast cells with ginsenoside Rd increased the expression of mRNA associated with the dermal-epidermal junction, suggesting potential as an anti-aging cosmetic ingredient.
This study reports that 70% ethanol extracts of Houttuynia cordata and Calendula officinalis may promote hair growth activity by not being toxic to fibroblasts or dermal papilla cells and stimulating lipid precursor cell differentiation in vitro.
April 2017 in “Journal of Investigative Dermatology” This study observed that a 3D culture model of hair follicle cells showed an anagen-like phase between days 3 to 6 and transitioned to a catagen-like phase by day 7, highlighting cell differentiation and structural development over time.
March 1998 in “Journal of dermatological science” Protease Nexin-1 is found in human hair growth cells and is affected by male hormones.
August 1993 in “Journal of Dermatological Science” Testosterone metabolism in balding scalp cells may not be the main cause of hair loss.
11 citations
,
December 2009 in “Cell stem cell” This study demonstrates that Sox2+ dermal papilla fibroblasts exhibit properties of adult stem cells, including the ability to induce hair follicle formation and contribute to dermal regeneration.
6 citations
,
November 2022 in “Development” This review discusses the developmental origins and diversity of dermal fibroblasts, focusing on their roles in epidermal and hair follicle growth, but reports no clinical results.
April 2023 in “bioRxiv (Cold Spring Harbor Laboratory)” This study identifies key transcriptomic features and a necessary dermal niche for eccrine gland development, advancing potential regenerative approaches for these vital skin appendages.
May 2018 in “Journal of Investigative Dermatology” Activating Wnt in skin cells controls the number of hair follicles by directing cell movement and fate.
April 2018 in “Journal of Investigative Dermatology” This study found that in obese mice, local antimicrobial activity is reduced due to a loss of adipogenic stem cells and an increase in mature adipocytes, leading to higher susceptibility to skin infections.
268 citations
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December 2003 in “Experimental Dermatology” This study demonstrated that clonal dermal papilla and dermal sheath cell lines from hair follicles can differentiate into lipid and bone cells, suggesting their potential as a stem cell source for tissue engineering.
36 citations
,
September 1996 in “PubMed” This study found that dermal papilla and dermal sheath cells from human scalp tissue differ from interstitial dermal fibroblasts in morphology and produce varying levels of TGF-beta 2.
30 citations
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August 2016 in “Skin research and technology” This study used 3D imaging to reveal age-related reductions in the volumes and connectivity of dermal papillae and rete ridges at the dermal-epidermal junction, which are not fully apparent in 2D examinations.
28 citations
,
October 2011 in “International Journal of Molecular Medicine” In this study, adenosine was found to stimulate hair follicle growth in vitro by promoting growth factor expression, β-catenin activation, and downstream signaling pathways.
19 citations
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July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” The researchers reported that hair follicle germinative epidermal cells can form complex structures when associating with papilla cells in culture, unlike other types of epidermal cells.
12 citations
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January 1991 in “Acta Dermato Venereologica” The researchers reported that BCE-like changes overlying dermatofibroma show a differentiation pattern most similar to normal basal cells based on specific keratin markers.
This study suggests that exogenous retinoic acid can alter the morphogenesis pathway of developing skin appendages when applied during the placodal stage, leading to changes like feather formation in atypical regions of chick embryos.