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.
74 citations
,
March 2013 in “Development” This study found that Hopx labels a long-lived progenitor population in hair follicles, which contributes to hair follicle stem cell homeostasis and has an alternative origin from previously thought progenitors.
144 citations
,
September 2012 in “Genes & development” This study found that aging in the epidermis disrupts cytokine balance and stem cell function, which may contribute to broader tumor-suppressive mechanisms.
300 citations
,
August 2012 in “Seminars in Cell & Developmental Biology” This review discusses mesenchymal–epithelial interactions in hair follicle development and cycling, highlighting recent insights without reporting new experimental results.
221 citations
,
July 2012 in “Proceedings of the National Academy of Sciences of the United States of America” This study found that the circadian clock in mouse skin regulates cell proliferation and affects sensitivity to UVB-induced DNA damage, with potential implications for understanding human skin cancer risk.
265 citations
,
July 2012 in “Cell” This study found multipotent progenitors in sweat ducts that become unipotent after sweat gland development, highlighting distinct regenerative capabilities in adult glandular skin stem cell populations.
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.
179 citations
,
April 2012 in “Nature Communications” This study demonstrates the potential of using bioengineered follicles from adult tissue-derived stem cells for fully functional hair regeneration, illustrating possible applications in organ replacement therapy.
24 citations
,
April 2012 in “Developmental Biology” This animal study found that dermal papilla cells in hair follicles of chimeric mice can originate from various fibroblasts in the skin, challenging assumptions about their specific lineage.
321 citations
,
January 2012 in “Cell stem cell” This study identified TGF-β2 as a crucial signal in hair follicle stem cell regeneration, highlighting its role in counteracting BMP signaling to promote tissue regeneration.
68 citations
,
December 2011 in “Journal of Investigative Dermatology” This study reported that a three-dimensional hydrogel culture system supports the growth and maintenance of distinct dermal papilla cell types, crucial for skin reconstitution assays in neonatal mice.
293 citations
,
November 2011 in “Nature” This study found that the circadian clock regulates the activation state of murine epidermal stem cells, affecting tissue homeostasis and susceptibility to tumorigenesis when disrupted.
128 citations
,
October 2011 in “Development” This study found that adult mouse dermis can be reprogrammed by epidermal cues to resemble neonatal dermis, with changes in fibroblast proliferation and extracellular matrix composition.
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.
260 citations
,
June 2011 in “Cell” This study found that Wnt signaling in the hair follicle is crucial for coordinating the behavior of epithelial and melanocyte stem cells, which drives hair regeneration and melanocyte differentiation in mice.
396 citations
,
May 2011 in “Cell stem cell” This study found that Shh from neurons signals to Gli1-expressing cells in the hair follicle, cultivating a niche where these bulge cells can potentially transform into epidermal stem cells in wound healing.
176 citations
,
April 2011 in “Science” This study found that in a population of hair follicles, regenerative cycling stages are regulated by both intrinsic and extrinsic signals, with WNT/BMP signaling mediating interactions among follicles for adaptability.
283 citations
,
February 2011 in “Cell stem cell” COL17A1 is crucial for preventing hair graying and loss by supporting hair and pigment stem cells.
294 citations
,
February 2011 in “Cell” Nephronectin helps attach muscle cells to hair follicles.
41 citations
,
June 2010 in “Journal of Investigative Dermatology” This study suggests that new cells are incorporated into the dermal papilla during the early anagen phase of the hair cycle, which may influence hair growth consistency and follicle size changes.
314 citations
,
April 2010 in “Developmental Cell” This study found that in mice, inactivating beta-catenin in the dermal papilla reduces hair follicle progenitor proliferation and disrupts the hair cycle.
185 citations
,
January 2010 in “Experimental Dermatology” This study introduces the concept of a "gut–brain–skin axis" where ingesting a specific Lactobacillus strain in mice may reduce stress-induced skin inflammation and hair growth inhibition.
338 citations
,
July 2009 in “Development” This study demonstrates that Sox2-positive dermal papilla cells specify particular hair follicle types by showing heterogeneity in gene expression and pathway activation in these cells.
503 citations
,
May 2009 in “Cell stem cell” This study suggests that Lrig1-positive cells form a previously unknown reservoir of interfollicular epidermal stem cells in adult mouse skin, influencing epidermal proliferation and hair follicle development.
1039 citations
,
February 2009 in “Nature Reviews Molecular Cell Biology” This review discusses the reuse of molecular mechanisms involved in embryonic skin development for maintaining adult epidermal homeostasis and reports no new results.
835 citations
,
October 2008 in “Nature Genetics” Lgr5 is a marker for active, long-lasting stem cells in mouse hair follicles.
61 citations
,
September 2008 in “Stem Cells” This study found that DNA strand segregation in multipotent hair follicle stem cells occurs randomly during development and tissue homeostasis, challenging the immortal strand hypothesis.
415 citations
,
January 2008 in “Cell” NFATc1 controls hair stem cell activity, affecting hair growth and could be a target for hair loss treatments.
139 citations
,
August 2006 in “Molecular and Cellular Biology” This study found that Rac1 is crucial for maintaining the integrity of hair follicle structure but is not needed for skin epidermis maintenance in mice.
207 citations
,
July 2006 in “Development” This study identified a novel MTS24-positive murine keratinocyte population with increased colony-forming ability, suggesting these cells may serve as a new reservoir of proliferative progenitor or stem cells in hair follicles.
1279 citations
,
November 2005 in “Nature Medicine” 
291 citations
,
October 2005 in “Proceedings of the National Academy of Sciences of the United States of America” This study found that rat whisker follicle stem cells can be expanded in culture and transplanted to form functional hair follicles, demonstrating their multipotency and potential for regenerative medicine.
384 citations
,
June 2005 in “Genes & development” This study found that stabilized beta-catenin is crucial for activating stem cell transition from quiescence to proliferation in hair follicles by influencing gene expression within the stem cell niche.
233 citations
,
October 2004 in “Differentiation” Stem cells are in deep skin layers, while differentiating cells are in shallow layers.
212 citations
,
August 2004 in “Proceedings of the National Academy of Sciences” This study found that nestin-driven GFP labels blood vessels originating from hair follicles in mice, which could be used to study early events in skin angiogenesis and for antiangiogenesis drug screening.
387 citations
,
November 2003 in “Journal of Investigative Dermatology” The K15 promoter effectively targets stem cells in the hair follicle bulge.
421 citations
,
September 2003 in “Development” This study concluded that label-retaining cells in mouse epidermis differ in their sensitivity to proliferative stimuli, influencing their division and potential transdifferentiation without consistently depleting their population.
158 citations
,
May 2003 in “Journal of Investigative Dermatology” This study observed that hair follicle mesenchyme in mice exhibits significant plasticity during the hair cycle, with cell migration and changes in papilla size impacting hair production.
555 citations
,
July 2001 in “Genes & Development” This study found that Tcf3 and Lef1 differently regulate cell differentiation in multipotent skin stem cells, with Tcf3 promoting follicle-like features and Lef1, when modified, promoting sebocyte differentiation.
949 citations
,
January 2001 in “Cell” This study demonstrated that multipotent stem cells in adult mice whisker follicles migrate to produce whisker growth, and that this process requires precise control of stem cell trafficking.
1010 citations
,
August 2000 in “Cell” In this study, researchers found that hair follicle stem cells in mice can generate both hair follicle and epidermis cells, highlighting their potential bipotency.
990 citations
,
October 1999 in “Development” This study found that LEF1/TCF3 is necessary but not sufficient for TOPGAL activation in hair follicle development, indicating complex regulation in the skin.
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.
