18 citations
,
December 2020 in “Frontiers in cell and developmental biology” This study found that extracellular vesicles from low-passage dermal papilla cells may activate hair growth by delivering miR-140-5p, which downregulates BMP2 signaling, suggesting potential therapeutic targets for alopecia.
8 citations
,
November 2020 in “Frontiers in Cell and Developmental Biology” This study reported that exogenous R-spondin-1 can restore hair follicle neogenesis in adult mouse cells, highlighting differences in gene expression and signaling pathways between fetal and adult dermal papilla cells.
5 citations
,
October 2020 in “Frontiers in Cell and Developmental Biology” This study found that the trichogenicity of cultured human outer root sheath follicular keratinocytes decreased with longer cultivation periods and was significantly influenced by the expression of the transcription factor FOXA2.
29 citations
,
April 2020 in “Biomolecules” The study suggests that a 3D culture system using the RAD16-I peptide scaffold can help restore the original phenotype of hair follicle dermal papilla cells and support their osteogenic and adipogenic differentiation.
51 citations
,
April 2020 in “Cells” This study found that macrophage extracellular vesicles enriched with Wnt proteins significantly promoted hair follicle growth in mice and increased hair shaft size in human hair follicles, suggesting potential clinical use for treating hair loss.
6 citations
,
March 2020 in “Scientific reports” This study found that glucose metabolism supports hair inductive gene expression and hair shaft elongation in dermal papilla cells, suggesting potential applications for in vitro hair follicle generation.
46 citations
,
January 2020 in “Theranostics” This study demonstrated that OSA hydrogels enhanced the stability and retention of dermal papilla-derived extracellular vesicles, which significantly improved hair regeneration in both cultured human hair and a mouse depilation model.
8 citations
,
July 2019 in “Cell Proliferation” In this study, researchers developed a chemical cocktail and suspension culture method to transform human dermal fibroblasts into dermal papilla-like cells capable of inducing hair follicle formation in vitro and in vivo.
37 citations
,
June 2019 in “Stem cells” This study found that extracellular vesicles from stimulated human dermal fibroblasts enhanced hair follicle growth ex vivo by activating dermal papilla cells and involving the Norrin and β-catenin pathways.
40 citations
,
June 2019 in “Biochemical and Biophysical Research Communications” This study demonstrated that combining the Wnt/β-catenin activator CHIR99021 with 3D spheroid culture effectively enriched hair follicle formation in reconstituted human skin.
58 citations
,
March 2019 in “Experimental Dermatology” This study suggests that exosomes derived from dermal papilla cells, especially those cultured in three dimensions, promote hair growth and regeneration by enhancing follicular cell activity.
25 citations
,
January 2019 in “British Journal of Dermatology” Low oxygen levels can make hair-growing cells better at growing hair through a process involving reactive oxygen species.
184 citations
,
December 2018 in “Nature Communications” This study demonstrated that enhancing human skin constructs with hair follicles through engineered cell organization and vascularization improved hair growth in immunodeficient mice, suggesting potential advances for treating alopecia and chronic wounds.
14 citations
,
September 2018 in “Biochemical and Biophysical Research Communications” This study suggests that co-culturing human outer root sheath cells with human dermal papilla cells can restore their ability to induce hair growth by altering gene expression through paracrine signaling.
113 citations
,
November 2017 in “Scientific Reports” This study found that treatment with mesenchymal stem cell extracellular vesicles enhanced hair growth in mice and stimulated dermal papilla cell activity and growth factor production in vitro.
30 citations
,
April 2017 in “Experimental Dermatology” This review explores the role of hair follicle dermal stem cells in skin regeneration and restorative therapies, but it reports no new experimental results.
214 citations
,
April 2017 in “Cell” This study found that micro-niches within hair follicles create heterogeneity among stem cells and transit-amplifying cells, leading to specialized progenitors that control tissue morphogenesis and regeneration.
42 citations
,
February 2017 in “Scientific Reports” In this study, researchers differentiated induced pluripotent stem cells into cells with dermal papilla-like properties, demonstrating their potential role in hair follicle bioengineering and drug testing for hair growth.
35 citations
,
January 2017 in “Journal of Dermatological Science” This study suggests that stress-induced premature senescence of dermal papilla cells may contribute to hair follicle aging by impairing critical epithelial-mesenchymal interactions and promoting inflammatory cytokine production.
37 citations
,
May 2016 in “Scientific Reports” In this study, the researchers found that using a core-shell assembly of adipose-derived stem cells and dermal papilla cells reconstructed hair follicle cellular arrangements more effectively than mixed assemblies, enhancing hair formation in vivo.
46 citations
,
April 2016 in “Journal of Investigative Dermatology” This study suggests that down-regulation of vasculature-related genes in dermal papilla cells from balding scalps might contribute to the development of androgenetic alopecia.
17 citations
,
February 2016 in “Experimental Dermatology” This study found that SFRP2 enhances Wnt3a-mediated β-catenin signaling in human dermal papilla cells, with higher SFRP2 expression in beard cells correlating with increased trichogenicity.
159 citations
,
October 2015 in “Science Advances” This study observed that applying JAK-STAT pathway inhibitors to mouse and human skin led to rapid hair growth by inducing the anagen phase of hair follicles.
184 citations
,
November 2014 in “Developmental Cell” This study identifies a bipotent stem cell in adult hair follicles that self-renews and contributes to dermal sheath and papilla cell populations, potentially aiding hair regrowth after injury, disease, or aging.
256 citations
,
October 2013 in “Proceedings of the National Academy of Sciences of the United States of America” This study found that altering cell culture conditions to form three-dimensional papilla spheroids can restore the ability of human dermal papilla cells to induce hair growth in adult skin.
63 citations
,
October 2013 in “Dermatologic Surgery” In this study using a mouse model, the researchers found that platelet-rich plasma significantly increased the number of newly formed hair follicles and decreased the time for hair formation compared to no treatment.
211 citations
,
April 2013 in “Development” In this study, researchers found that the number of dermal papilla cells in hair follicles determines hair size and shape in mice, suggesting potential avenues for addressing hair loss.
78 citations
,
October 2012 in “Biomaterials” This study found that both human and rat dermal papilla spheroids can induce hair follicle neogenesis, but larger spheroids increase inductivity without significantly affecting hair fiber diameter.
305 citations
,
June 2012 in “Nature” This study reports that hair regeneration in live mice involves spatially regulated stem cell divisions and requires mesenchymal interactions, observed in real-time using a novel non-invasive imaging method.
499 citations
,
September 2011 in “Cell” This study found that intradermal adipocyte lineage cells in mice are necessary and sufficient to activate follicular stem cells, highlighting their role in regulating skin stem cell activity.
75 citations
,
August 2011 in “Journal of Investigative Dermatology” This study found that cultured human dermal papilla cells formed into three-dimensional spheres have an increased ability to induce hair follicles from mouse epidermal cells compared to two-dimensional cultures.
209 citations
,
September 2008 in “Dermatologic Therapy” This review discusses the role of androgens in hair follicle regulation and suggests that a better understanding could enhance treatments for conditions like hirsutism and alopecia, but does not present new findings.
80 citations
,
June 2008 in “Biomaterials” This study found that poly(ethylene-co-vinyl alcohol) membranes support the self-assembly of dermal papilla cells into compact spheroidal microtissues capable of inducing new hair follicles, suggesting potential for large-scale production for hair follicle regeneration.
195 citations
,
June 2005 in “American Journal of Human Genetics” Genetic variation in the androgen receptor gene mainly causes early-onset hair loss, with maternal inheritance playing a key role.
208 citations
,
December 2003 in “Journal of Investigative Dermatology” This study found that dermal papilla and peribulbar dermal sheath cup cells in mice can both induce hair follicle formation, suggesting they may have similar functional roles in hair growth.
54 citations
,
June 2003 in “The journal of investigative dermatology. Symposium proceedings/The Journal of investigative dermatology symposium proceedings” This speculative review discusses hair cycle-dependent fibroblast dynamics and possible impacts on human hair growth, synthesizing current literature without presenting new clinical findings.
854 citations
,
February 2002 in “The journal of investigative dermatology/Journal of investigative dermatology” This review summarizes recent advances in understanding the molecular mechanisms of hair follicle formation and discusses potential future clinical applications for treating hair loss and skin tumors, but it reports no new clinical results.
116 citations
,
September 2001 in “Journal of The American Academy of Dermatology” This study suggests that miniaturization in pattern hair loss may occur abruptly and can be reversed with treatment, as supported by histologic evidence in finasteride-responsive patients.
66 citations
,
August 2001 in “Experimental Dermatology” This study demonstrated that intact adult human dermal papillae can induce hair growth when implanted into mouse hair follicles, highlighting their potential for advancing hair follicle biology and therapeutic approaches.
234 citations
,
February 2001 in “British Journal of Dermatology” FPHL affects hair density and diameter, causing visible hair loss in older women.
231 citations
,
December 1999 in “Journal of Investigative Dermatology” This study found that the volume of a hair follicle's dermal papilla is strongly correlated with its size, primarily due to the number of cells it contains and the volume of extracellular matrix.
1113 citations
,
August 1999 in “The New England Journal of Medicine” This article discusses the biologic and psychosocial significance of hair, the current limitations in hair growth drugs, and anticipates future therapies based on advancing hair follicle research.
59 citations
,
August 1998 in “International Journal of Dermatology” Genetics and hormones cause hair loss; finasteride treats it safely.
192 citations
,
March 1998 in “British Journal of Dermatology” This study found that minoxidil significantly increases VEGF mRNA and protein expression in dermal papilla cells, suggesting a role in enhancing hair follicle vascularization in androgenetic alopecia.
227 citations
,
January 1998 in “Journal of Endocrinology” This study found that dermal papilla cells from balding scalp hair follicles have significantly higher levels of androgen receptors than those from non-balding follicles, supporting their in vivo androgen response.
416 citations
,
September 1997 in “Journal of Investigative Dermatology” People with hair loss have more androgen receptors and enzymes in certain follicles, with men and women showing different patterns.
122 citations
,
July 1994 in “Journal of Investigative Dermatology” 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.
125 citations
,
August 1992 in “Development” This study found that implanting isolated adult rat dermal papillae into ear cuts led to the emergence of unusually large vibrissa-type hair follicles, demonstrating their capacity to induce specific hair fiber characteristics.
45 citations
,
December 1991 in “Annals of the New York Academy of Sciences” This article discusses the distribution of extracellular matrix molecules in human hair follicles and reports no new results.
85 citations
,
January 1991 in “Journal of Investigative Dermatology” 103 citations
,
December 1986 in “Journal of Investigative Dermatology” 
81 citations
,
April 1941 in “Physiological zoology” Experiments can shape how feathers grow and develop.
