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Chéret J, Gherardini J, Bertolini M, Paus R. Fluoxetine promotes human hair follicle pigmentation
ex vivo
: serotonin reuptake inhibition as a new antigreying strategy? Br J Dermatol 2020; 182:1492-1494. [DOI: 10.1111/bjd.18819] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Bertolini M, Ramot Y, Gherardini J, Heinen G, Chéret J, Welss T, Giesen M, Funk W, Paus R. Theophylline exerts complex anti-ageing and anti-cytotoxicity effects in human skin ex vivo. Int J Cosmet Sci 2019; 42:79-88. [PMID: 31633195 DOI: 10.1111/ics.12589] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 10/17/2019] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Theophylline is a phosphodiesterase inhibitor that is being used clinically for asthma therapy. In addition, it is recognized as a cosmetic agent with possible anti-ageing and anti-oxidative properties. Nevertheless, how it affects human skin is still poorly examined. METHODS Theophylline (10 or 100 µM) was administered to the culture medium of full-thickness human skin ex vivo for 24 or 72 h. RESULTS Theophylline stimulated protein expression of the anti-oxidant metallothionein-1 and mRNA levels of collagen I and III. Assessment of fibrillin-1 immunohistology revealed enhanced structural stability of dermal microfibrils. Theophylline also exerted extracellular matrix-protective effects by decreasing MMP-2 and MMP-9 mRNA levels, partially antagonizing the effects of menadione, the potent, toxic ROS donor. In addition, it decreased menadione-stimulated epidermal keratinocytes apoptosis. Interestingly, theophylline also increased the level of intracutaneously produced melatonin, that is the most potent ROS-protective and DNA damage repair neuromediator, and tendentially increased protein expression of MT1, the melatonin receptor. Theophylline also increased the expression of keratin 15, the stem cell marker, in the epidermal basal layer but did not change mitochondrial activity or epidermal pigmentation. CONCLUSION This ex vivo pilot study in human skin shows that theophylline possesses several interesting complex skin-protective properties. It encourages further examination of theophylline as a topical candidate for anti-ageing treatment.
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Alam M, Bertolini M, Gherardini J, Keren A, Ponce L, Chéret J, Alenfall J, Dunér P, Nilsson AH, Gilhar A, Paus R. An osteopontin-derived peptide inhibits human hair growth at least in part by decreasing fibroblast growth factor-7 production in outer root sheath keratinocytes. Br J Dermatol 2019; 182:1404-1414. [PMID: 31487385 DOI: 10.1111/bjd.18479] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/25/2019] [Indexed: 12/15/2022]
Abstract
BACKGROUND Given that unwanted hair growth (hirsutism, hypertrichosis) can cause major psychological distress, new pharmacological treatment strategies with safe and effective hair growth inhibitors that do not destroy the hair follicle (HF) and its stem cells need to be developed. OBJECTIVES To establish if osteopontin-derived fragments may modulate human hair growth given that human HFs express the multifunctional, immunomodulatory glycoprotein, osteopontin. METHODS Our hypothesis was tested ex vivo and in vivo by using a newly generated, toxicologically well-characterized, modified osteopontin-derived peptide (FOL-005), which binds to the HF. RESULTS In organ-cultured human HFs and scalp skin, and in human scalp skin xenotransplants onto SCID mice, FOL-005 treatment (60 nmol L-1 to 3 μmol L-1 ) significantly promoted premature catagen development without reducing the number of keratin 15-positive HF stem cells or showing signs of drug toxicity. Genome-wide DNA microarray, quantitative reverse-transcriptase polymerase chain reaction and immunohistochemistry revealed decreased expression of the hair growth promoter, fibroblast growth factor-7 (FGF7) by FOL-005, while cotreatment of HFs with recombinant FGF7 partially abrogated FOL-005-induced catagen promotion. CONCLUSIONS With caveats in mind, our study identifies this osteopontin-derived peptide as an effective, novel inhibitory principle for human hair growth ex vivo and in vivo, which deserves systematic clinical testing in hirsutism and hypertrichosis. What's already known about this topic? The treatment of unwanted hair growth (hypertrichosis, hirsutism) lacks pharmacological intervention, with only few and often unsatisfactory treatments available. Osteopontin is prominently expressed in human HFs and has been reported to be elevated during catagen in the murine hair cycle. What does this study add? We tested the effects on hair growth of a novel, osteopontin-derived fragment (FOL-005) ex vivo and in vivo. In human hair follicles, high-dose FOL-005 significantly reduces hair growth both ex vivo and in vivo. What is the translational message? High-dose FOL-005 may provide a new therapeutic opportunity as a treatment for unwanted hair growth.
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Hawkshaw N, Hardman J, Alam M, Jimenez F, Paus R. Deciphering the molecular morphology of the human hair cycle: Wnt signalling during the telogen–anagen transformation. Br J Dermatol 2019; 182:1184-1193. [DOI: 10.1111/bjd.18356] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/12/2019] [Indexed: 12/24/2022]
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Laufer Britva R, Keren A, Paus R, Gilhar A. Apremilast and tofacitinib exert differential effects in the humanized mouse model of alopecia areata. Br J Dermatol 2019; 182:227-229. [DOI: 10.1111/bjd.18264] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Rutkowski D, Hardman J, Warren R, Griffiths C, Paus R. 422 Human hair follicles express PD-L1, whose expression is down-regulated by EGFR and MEK inhibitors ex vivo. A potential mechanism for EGFR inhibitor induced sterile folliculitis. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Cheret J, Piccini I, Ponce L, Bertolini M, Paus R. 604 Towards the development of a completely humanized model for the investigation of sensory nervous system in scalp skin ex vivo. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Piccini I, Chéret J, Ghatak S, Alam M, Hardman J, Erdmann H, Jimenez F, Ward C, Paus R, Bertolini M. 599 PPARg signaling modulation protects from hair follicle bulge stem cell damage and cyclophosphamide-induced hair follicle cytotoxicity. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Laufer R, Keren A, Paus R, Gilhar A. 431 Innate lymphoid cells type 1 may be new, non-antigen-specific player in the pathogenesis of alopecia areata. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Piccini I, Bakkar K, Collin-Djangoné C, Langan E, Gherardini J, Paus R, Bertolini M. 613 Assessment of the induction and morphogenic potential of human hair matrix cells and dermal papilla fibroblasts ex vivo. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Figlak K, Paus R, Williams G, Philpott M. 597 Outer root sheath is able to synthesise glycogen from lactate-investigating glycogen metabolism in human hair follicles. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Clayton R, Hinde E, Lim X, Paus R, van Steensel M. 574 Murine sebaceous gland homeostasis requires intact cutaneous innervation in a hair cycle-dependent context. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Fehrholz M, Wandrey F, Piccini I, Gherardini J, Alam M, Erdmann H, Jimenez F, Schmid D, Paus R, Bertolini M. 621 An apple stem cell-derived extract increases epithelial stem cells number in the hair follicle bulge. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Lopez E, Jimenez F, Bertolini M, Alam M, Ward C, Cheret J, Westgate G, Rinaldi F, Paus R. 181 Topical Sandalore®, a specific OR2AT4-stimulating odorant, ameliorates telogen effluvium: Randomized, double-blinded, placebo-controlled trial. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Nicu C, Hardman J, Lai T, Pople J, Bhogal R, Ansell D, Paus R. 576 The role of hepatocyte growth factor in human hair follicle – dermal white adipose tissue communication. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Clayton R, Göbel K, Niessen C, Paus R, Steensel M, Lim X. Homeostasis of the sebaceous gland and mechanisms of acne pathogenesis. Br J Dermatol 2019; 181:677-690. [DOI: 10.1111/bjd.17981] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/06/2019] [Indexed: 12/13/2022]
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Keren A, Riethmüller C, Ullmann Y, Paus R, Gilhar A. 661 Development of a novel humanized mouse model for atopic dermatitis. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Bertolini M, Jimenez F, Lopez E, Alam M, Ward C, Chéret J, Westgate G, Rinaldi F, Paus R. 609 Topical Sandalore®, a specific OR2AT4-stimulating odorant, ameliorates female telogen effluvium: Randomized, double-blinded, placebo-controlled clinical trial. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Piccini I, Chéret J, Ghatak S, Alam M, Hardmann J, Erdmann H, Jimenez F, Ward C, Paus R, Bertolini M. 909 PPARγ stimulation protects from cyclophosphamide-induced hair follicle cytotoxicity and bulge stem cell damage. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Laufer Britva R, Keren A, Ullmann Y, Paus R, Gilhar A. 516 Possible role of ILC1 in the pathogenesis of alopecia areata (AA). J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.592] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Nicu C, Hardmann J, Lai T, Pople J, Bhogal R, Ansell D, Paus R. 922 Dermal white adipose tissue secretes hepatocyte growth factor to promote human hair follicle growth and pigmentation. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Gherardini J, Wegner J, Chéret J, Lehmann J, Alam M, Jimenez F, Botchkareva N, Paus R, Bertolini M. 910 Transepidermal UV radiation of human scalp skin induces distinctive hair follicle damage, which is mitigated by topical caffeine treatment. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Lehmann J, Kemper B, Barroso Peña A, Schnekenburger J, Paus R, Bertolini M, Chéret J. Image Gallery: Optical coherence tomography for intravital human hair follicle analyses ex vivo. Br J Dermatol 2019; 180:e141. [PMID: 31025739 DOI: 10.1111/bjd.17518] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Gkogkolou P, Sarna M, Sarna T, Paus R, Luger T, Böhm M. HG in keratinocytes and the impact of KdPT. Br J Dermatol 2019. [DOI: 10.1111/bjd.17650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Gkogkolou P, Sarna M, Sarna T, Paus R, Luger T, Böhm M. 角质形成细胞中的 HG 和 KdPT 的影响. Br J Dermatol 2019. [DOI: 10.1111/bjd.17666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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