31 citations
,
February 2014 in “Inflammation Research” This study found that reduced expression of CD200R1 on monocyte-derived macrophages in rheumatoid arthritis patients was significantly associated with higher disease severity and an imbalance in Th17/Treg cells.
12 citations
,
April 2017 in “Experimental and Therapeutic Medicine” This study found that patients with active severe alopecia areata exhibited decreased CD200 expression on T and B lymphocytes, which may be linked to an imbalance in Th1/Th2 immune equilibrium.
November 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that engineered high-affinity soluble CD200R agonists, including ARQ-234, showed superior efficacy in reducing immune responses in various preclinical models of inflammatory conditions, suggesting potential as a therapeutic for atopic dermatitis and other related diseases.
235 citations
,
January 2011 in “Journal of Clinical Investigation” This study found that androgenetic alopecia may involve a defect in the conversion of hair follicle stem cells to progenitor cells, as demonstrated by a reduced presence of progenitor cells in bald scalp samples.
12 citations
,
November 2007 in “Journal of Investigative Dermatology” CD200 is not a reliable marker for identifying stem cells in all skin types.
11 citations
,
September 2019 in “Dermatologic Surgery” This study found that vascular endothelial growth factor may protect hair follicle stem cells from androgen-induced apoptosis in androgenic alopecia patients via the PI3K/Akt pathway.
5 citations
,
November 2005 in “Journal of Investigative Dermatology” 
April 2026 in “Frontiers in Cell and Developmental Biology” This study found that CD200-negative human hair follicle bulge cells have a higher hair-regenerative capability compared to CD200-positive cells, suggesting that reduced CD200 expression may enhance hair regeneration, providing insights for improving bulge cell-based hair restoration techniques.
April 2026 in “Institutional Repositories DataBase (IRDB)” This study investigated human hair follicle bulge cells and found that those with reduced CD200 expression exhibited enhanced hair regenerative capability, refining the functional understanding of bulge cell heterogeneity and providing insights for optimizing bulge cell–based hair regeneration techniques.
January 2023 in “Turk Dermatoloji Dergisi” In a single case study, researchers reported increased hair density using a trypsin-isolated cell suspension containing CD34 and CD200 positive cells for treating grade III androgenetic alopecia.
April 2011 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” Bald men with male pattern baldness still have hair stem cells, but lack certain cells needed for hair growth.
January 2011 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” Bald men with male pattern baldness still have hair stem cells, but lack certain cells needed for hair growth.
January 2011 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” Bald men with male pattern baldness still have hair stem cells, but lack certain cells needed to grow hair.
32 citations
,
January 2012 in “Clinical & Developmental Immunology” In this study, rheumatoid arthritis patients showed no changes in the number of circulating follicular helper T cells, but these cells had increased CD200 expression, implicating them in disease pathogenesis and suggesting CD200/CD200R as a potential therapeutic target.
550 citations
,
December 2005 in “The Journal of clinical investigation/The journal of clinical investigation” This study found that bulge cells marked by CD200+ in human hair follicles show high colony-forming efficiency, suggesting successful enrichment of keratinocyte stem cells.
150 citations
,
October 2010 in “The American Journal of Pathology” This review discusses the pathogenesis and challenges in treating primary cicatricial alopecia, highlighting the need to understand immune protection collapse in hair follicle stem cells; it reports no new clinical results.
106 citations
,
March 2014 in “BioEssays” This review examines current knowledge on human epithelial hair follicle stem cells, their markers, and outlines challenges in translating findings from murine studies to human research, but does not report new experimental results.
6 citations
,
May 2013 in “PloS one” This study found that the Foxn1(-/-) nude phenotype significantly influences epithelial progeny in skin, with notable changes in stem cell niches not achievable in other models.
5 citations
,
December 2017 in “Tissue and cell/Tissue & cell” This study observed that skin stem cells in dogs could be identified using CD34 and CD200 markers, although further refinement in isolation and cultivation methods is needed for better identification.
1 citations
,
February 2021 in “Journal of Natural Remedies” This study found that a combination of Ficus religiosa and Morus alba extracts promoted hair growth and Hair Follicle regeneration in a mouse model of hair loss by inducing the anagen phase and upregulating stem cell-associated genes.
April 2023 in “Journal of Investigative Dermatology” In this study, a mouse model of scarring alopecia demonstrated significantly reduced CD200R expression in affected skin, which may contribute to immune attacks on hair follicles.
April 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” This study reports that CD200R expression is significantly reduced in an experimental mouse model of scarring alopecia, suggesting a potential role for this pathway in immune regulation and hair follicle protection.
This study found that innate lymphoid cells-type 1 (ILC1) can induce alopecia areata by disrupting hair follicle immune privilege without the involvement of classical CD8+ T cells.
This study found that innate lymphoid cells-type 1 (ILC1lc) can induce alopecia areata (AA) by disrupting hair follicle immune privilege and causing hair follicle dystrophy and regression in both ex vivo and in vivo settings.
March 2024 in “International Journal of Cosmetic Science” This study observed that dandruff-affected scalp skin has increased T-cell infiltration in the epidermis and a reduction in the hair follicle's physiological immune privilege, particularly in the suprabulbar outer root sheath area, indicating a distinct immune microenvironment compared to healthy scalp.
99 citations
,
January 2014 in “Nature communications” In this study, researchers developed a method to differentiate human iPSCs into cells that can generate all lineages of hair follicles, potentially aiding treatments for hair loss and skin disorders.
92 citations
,
December 2005 in “The Journal of clinical investigation/The journal of clinical investigation” This study reports that human hair follicle stem cells express different surface markers than mouse stem cells, facilitating their isolation and potentially aiding in the development of cell-based skin treatments.
62 citations
,
April 2009 in “British Journal of Dermatology” This review discusses the potential markers for identifying and studying stem cells in the epidermis and hair follicles, highlighting their role in understanding skin disease pathogenesis and expanding therapeutic options, but reports no new findings.
42 citations
,
July 2010 in “European Journal of Cell Biology” This study found that thyroid hormones T3 and T4 enhance keratin 15 promoter activity and stimulate CD200 expression in epithelial stem cells from human scalp hair follicles, affecting their growth and differentiation.
36 citations
,
April 2010 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that canine bulge-derived keratinocytes are highly proliferative and can reconstitute pilosebaceous structures, indicating their potential utility in studying human stem cell biology and hair disorders.