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Wu Y, Yang Y, Lin Y, Ding Y, Liu Z, Xiang L, Picardo M, Zhang C. Emerging Role of Fibroblasts in Vitiligo: A Formerly Underestimated Rising Star. J Invest Dermatol 2024; 144:1696-1706. [PMID: 38493384 DOI: 10.1016/j.jid.2024.02.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/29/2024] [Accepted: 02/05/2024] [Indexed: 03/18/2024]
Abstract
Vitiligo is a disfiguring depigmentation disorder characterized by loss of melanocytes. Although numerous studies have been conducted on the pathogenesis of vitiligo, the underlying mechanisms remain unclear. Although most studies have focused on melanocytes and keratinocytes, growing evidence suggests the involvement of dermal fibroblasts, residing deeper in the skin. This review aims to elucidate the role of fibroblasts in both the physiological regulation of skin pigmentation and their pathological contribution to depigmentation, with the goal of shedding light on the involvement of fibroblasts in vitiligo. The topics covered in this review include alterations in the secretome, premature senescence, autophagy dysfunction, abnormal extracellular matrix, autoimmunity, and metabolic changes.
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Affiliation(s)
- Yue Wu
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Yiwen Yang
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Yi Lin
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Yuecen Ding
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Ziqi Liu
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Leihong Xiang
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Mauro Picardo
- Istituto Dermopatico Immacolata (IDI)- Istituto di Ricovero e Cura a Carattere Scientifico (RCCS), Rome, Italy.
| | - Chengfeng Zhang
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, People's Republic of China.
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Lan J, Huang X, Li H, Lin S, Huang J, Yang W, Ouyang M, Fang J, Xu Q. YTHDF2 Regulates Advanced Glycation End Products-Induced Melanogenesis through Inhibiting A20 Expression in Human Dermal Fibroblasts. Inflammation 2024:10.1007/s10753-024-02097-0. [PMID: 39009810 DOI: 10.1007/s10753-024-02097-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2024] [Revised: 05/06/2024] [Accepted: 07/01/2024] [Indexed: 07/17/2024]
Abstract
Fibroblast A20 suppresses advanced glycation end products (AGEs)-induced melanogenesis by inhibiting NLRP3 inflammasome activation. AGEs repress A20 expression and significantly m6A-methylate A20 mRNA in fibroblasts. YTHDF2 is the most studied m6A reader protein and can accelerate degradation of m6A-modified mRNA. Whether YTHDF2 regulates AGEs-induced A20 expression and pigmentation is unknown. In this study, we confirmed that YTHDF2 inversely regulated AGEs-BSA-inhibited A20 expression but facilitated AGEs-BSA-activated NF-κB signaling and NLRP3 inflammasome in fibroblasts via YTHDF2 knockdown and overexpression experiments. Mechanistically, YTHDF2 bound to m6A-modified A20 mRNA induced by AGEs-BSA and increased its degradation. Moreover, fibroblast YTHDF2 robustly promoted AGEs-BSA-induced IL-18 level in coculture supernatants and melanin content, tyrosinase activity, and expression of microphthalmia-associated transcription factor and tyrosinase in melanocytes, which were significantly blocked by IL-18 binding protein. Further, fibroblast YTHDF2 markedly increased AGEs-BSA-induced epidermal melanin level in cocultured ex vivo skin and MAPKs activation in melanocytes. Importantly, upregulated dermal YTHDF2 expression was negatively correlated with dermal A20 level and positively associated with both epidermal melanin and dermal AGEs content in sun-exposed skin and lesions of melasma and solar lentigo. These findings suggest that fibroblast YTHDF2 positively regulates AGEs-induced melanogenesis mainly via A20/ NF-κB /NLRP3 inflammasome/ IL-18 /MAPKs axis in an m6A-dependent manner and functions in photoaging-induced hyperpigmentation skin disorders.
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Affiliation(s)
- Jingjing Lan
- Department of Dermato-Venereology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, P. R. China
| | - Xianyin Huang
- Department of Dermato-Venereology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, P. R. China
| | - Hongpeng Li
- Department of Dermato-Venereology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, P. R. China
| | - Shen Lin
- Department of Dermato-Venereology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, P. R. China
| | - Jingqian Huang
- Department of Dermato-Venereology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, P. R. China
| | - Weixin Yang
- Department of Dermato-Venereology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, P. R. China
| | - Mengting Ouyang
- Department of Dermato-Venereology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, P. R. China
| | - Jiaqi Fang
- Department of Dermato-Venereology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, P. R. China.
| | - Qingfang Xu
- Department of Dermato-Venereology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, P. R. China.
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Lee EJ, Ryu JH, Baek JH, Boo YC. Skin Color Analysis of Various Body Parts (Forearm, Upper Arm, Elbow, Knee, and Shin) and Changes with Age in 53 Korean Women, Considering Intrinsic and Extrinsic Factors. J Clin Med 2024; 13:2500. [PMID: 38731031 PMCID: PMC11084701 DOI: 10.3390/jcm13092500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 04/12/2024] [Accepted: 04/23/2024] [Indexed: 05/13/2024] Open
Abstract
Background/Objectives: Skin color is innately determined by race and other genetic factors, and it also undergoes acquired changes due to various intrinsic and extrinsic factors. Previous studies on skin color have mainly focused on the face, and research has recently expanded to other body parts. However, there is limited information about the age-dependent changes in the skin color of these body parts. The purpose of this study is to analyze the differences in skin color between various body parts and the changes in skin color of each body part with age. Methods: This study examined the skin color of 53 Korean women subjects evenly distributed in age from the 20s to 60s on several body parts: forearm, upper arm, elbow (extended or folded), knee (extended or folded), thigh, and shin. The lightness (L*), redness (a*), and yellowness (b*) were measured using a spectrophotometer, and the individual typology angle (ITA°) was calculated from the L* and b* values. The melanin index and erythema index were measured using the mexameter. Results: The results showed that the elbow skin had the lowest L* and ITA° values and the highest a* and b* values among the examined body parts, followed by the knee. The melanin index and erythema index were also high in the skin of these body parts. In the analysis of age-dependent changes in the skin color of various body parts, the forearm skin exhibited the most notable decrease in the L* and ITA° values and increases in the a* and b* values, followed by upper-arm skin. The melanin and erythema indices in the forearm also increased as the subjects aged, whereas those in the elbow and knee rather decreased with age. Conclusions: This study suggests that differences in intrinsic and extrinsic skin aging in various body parts may be expressed as different changes in skin color and raises the need for cosmetic and dermatological research to identify the physiological significance of these changes.
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Affiliation(s)
- Eun Ju Lee
- Skin Research Center, Dermapro Ltd., Seoul 06570, Republic of Korea; (E.J.L.); (J.H.R.)
| | - Ja Hyun Ryu
- Skin Research Center, Dermapro Ltd., Seoul 06570, Republic of Korea; (E.J.L.); (J.H.R.)
| | - Ji Hwoon Baek
- Skin Research Center, Dermapro Ltd., Seoul 06570, Republic of Korea; (E.J.L.); (J.H.R.)
| | - Yong Chool Boo
- Department of Molecular Medicine, School of Medicine, Kyungpook National University, Daegu 41944, Republic of Korea
- BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, The Graduate School, Kyungpook National University, Daegu 41944, Republic of Korea
- Cell and Matrix Research Institute, Kyungpook National University, Daegu 41944, Republic of Korea
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Sanjaya SS, Park MH, Karunarathne WAHM, Lee KT, Choi YH, Kang CH, Lee MH, Jung MJ, Ryu HW, Kim GY. Inhibition of α-melanocyte-stimulating hormone-induced melanogenesis and molecular mechanisms by polyphenol-enriched fraction of Tagetes erecta L. flower. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 126:155442. [PMID: 38394730 DOI: 10.1016/j.phymed.2024.155442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 01/30/2024] [Accepted: 02/08/2024] [Indexed: 02/25/2024]
Abstract
BACKGROUND The pursuit for safe and efficacious skin-whitening agents has prompted a dedicated exploration of plant-derived compounds. Notably, Tagetes erecta L. flowers have been used as a medicinal extract and possessed in vitro mushroom tyrosinase activity. However, whether polyphenol-enriched fraction extracted from T. erecta L. flowers (TE) regulates melanogenesis within cellular and animal models has not yet been investigated. PURPOSE This study aimed to investigate the effect of TE as a prospective inhibitor of melanogenesis. METHODS Through advanced UPLC-QTof/MS analysis, the components of TE were analyzed. Anti-melanogenic effects of TE were evaluated in α-melanocyte-stimulating hormone (α-MSH)-stimulated B16F10 melanoma cells by measuring cell viability assay, extracellular and intracellular melanin biosynthesis, cyclic adenosine monophosphate (cAMP) production, and melanogenesis-related gene and protein expression. Zebrafish larvae were employed for in vivo studies, assessing both heart rate and melanogenesis. Furthermore, molecular docking analyses were employed to predict the interaction between TE components and the melanocortin 1 receptor (MC1R). Direct binding activity of TE components to MC1R was compared with [Nle4, d-Phe7]-MSH (NDP-MSH). RESULTS TE was found to contain significant phenolic compounds such as patulitrin, quercetagetin, kaempferol, patuletin, and isorhamnetin. This study revealed that TE effectively inhibits melanin biosynthesis in both in vitro and in vivo models. This inhibition was attributed to interference of TE with the cAMP-cAMP response element-binding protein (CREB)-microphthalmia-associated transcription factor (MITF)-tyrosinase pathway, which plays a pivotal role in regulating melanogenesis. Importantly, TE exhibited the remarkable ability to curtail α-MSH-induced melanogenesis in zebrafish larvae without impacting heart rates. Molecular docking analyses predicted that the components of TE possibly interact with the melanocortin 1 receptor, suggesting their role as potential inhibitors of melanin biosynthesis. However, through the direct binding activity compared with NDP-MSH, any TE components did not directly bind to MC1R, suggesting that TE inhibits α-MSH-induced melanogenesis by inhibiting the cAMP-mediated intracellular signaling pathway. The assessment of anti-melanogenic activity, conducted both in vitro and in vivo, revealed that patulitrin and patuletin exhibited significant inhibitory effects on melanin formation, highlighting their potency as major contributors. DISCUSSION This investigation demonstrated the considerable potential of TE as a natural remedy endowed with remarkable anti-melanogenic properties. The demonstrated capacity of TE to attenuate melanin production by modulating the cAMP-CREB-MITF-tyrosinase pathway underscores its central role in management of disorders associated with excessive pigmentation. Importantly, the implications of these findings extend to the cosmetics industry, where TE emerges as a prospective and valuable ingredient for the formulation of skin-whitening products. The elucidated interactions between TE components and MC1R not only provide insight into a potential mechanism of action but also elevate the significance of this study. In summary, this study not only contributes to our comprehension of pigmentation-related conditions but also firmly establishes TE as a secure and natural strategy for the regulation of melanin production. The innovative aspects of TE propel it into the forefront of potential interventions, marking a noteworthy advancement in the pursuit of effective and safe solutions for pigmentation disorders.
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Affiliation(s)
| | - Mi Hyeon Park
- Natural Product Research Center, Korea Research Institute of Bioscience and Biotechnology, Cheongju 28116, Republic of Korea
| | | | - Kyoung Tae Lee
- Forest Bioresources Department, Forest Microbiology Division, National Institute of Forest Science, Suwon 16631, Republic of Korea
| | - Yung Hyun Choi
- Department of Biochemistry, College of Korean Medicine, Dong-Eui University, Busan 47227, Republic of Korea
| | - Chang-Hee Kang
- Nakdonggang National Institute of Biological Resources, Sangju 37242, Republic of Korea
| | - Mi-Haw Lee
- Nakdonggang National Institute of Biological Resources, Sangju 37242, Republic of Korea
| | - Min-Jeong Jung
- GENE & BIO, 145 Sindae-ro, Jeju 63134, Republic of Korea
| | - Hyung Won Ryu
- Natural Product Research Center, Korea Research Institute of Bioscience and Biotechnology, Cheongju 28116, Republic of Korea.
| | - Gi-Young Kim
- Department of Marine Life Science, Jeju National University, Jeju 63243, Republic of Korea.
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Liu L, Xue Y, Li Y, Chen Y, Pan X, Huang Y, Chen T, Zhong J, Shao X, Pu Y, Chen J. Genome-wide DNA methylation of lesional and peri-lesional skin in vitiligo: a comparative and integrated analysis of multi-omics in Chinese population. Hum Genet 2024; 143:137-149. [PMID: 38182908 DOI: 10.1007/s00439-023-02630-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 11/30/2023] [Indexed: 01/07/2024]
Abstract
Several studies have emphasized the role of DNA methylation in vitiligo. However, its profile in human skin of individuals with vitiligo remains unknown. Here, we aimed to study the DNA methylation profile of vitiligo using pairwise comparisons of lesions, peri-lesions, and healthy skin. We investigated DNA methylation levels in six lesional skin, six peri-lesional skin, and eight healthy skin samples using an Illumina 850 K methylation chip. We then integrated DNA methylation data with transcriptome data to identify differentially methylated and expressed genes (DMEGs) and analyzed their functional enrichment. Subsequently, we compared the methylation and transcriptome characteristics of all skin samples, and the related genes were further studied using scRNA-seq data. Finally, validation was performed using an external dataset. We observed more DNA hypomethylated sites in patients with vitiligo. Further integrated analysis identified 264 DMEGs that were mainly functionally enriched in cell division, pigmentation, circadian rhythm, fatty acid metabolism, peroxidase activity, synapse regulation, and extracellular matrix. In addition, in the peri-lesional skin, we found that methylation levels of 102 DMEGs differed prior to changes in their transcription levels and identified 16 key pre-DMEGs (ANLN, CDCA3, CENPA, DEPDC1, ECT2, DEPDC1B, HMMR, KIF18A, KIF18B, TTK, KIF23, DCT, EDNRB, MITF, OCA2, and TYRP1). Single-cell RNA analysis showed that these genes were associated with cycling keratinocytes and melanocytes. Further analysis of cellular communication indicated the involvement of the extracellular matrix. The expression of related genes was verified using an external dataset. To the best of our knowledge, this is the first study to report a comprehensive DNA methylation profile of clinical vitiligo and peri-lesional skin. These findings would contribute to future research on the pathogenesis of vitiligo and potential therapeutic strategies.
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Affiliation(s)
- Lin Liu
- Department of Dermatology, The First Affiliated Hospital of Chongqing Medical University, No.1 Youyi Road, Yuzhong District, Chongqing, 400016, China
| | - Yuzhou Xue
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, Beijing, China
| | - Yuxin Li
- Department of Dermatology, The First Affiliated Hospital of Chongqing Medical University, No.1 Youyi Road, Yuzhong District, Chongqing, 400016, China
| | - Yangmei Chen
- Department of Dermatology, The First Affiliated Hospital of Chongqing Medical University, No.1 Youyi Road, Yuzhong District, Chongqing, 400016, China
| | - Xingyu Pan
- Department of Dermatology, The First Affiliated Hospital of Chongqing Medical University, No.1 Youyi Road, Yuzhong District, Chongqing, 400016, China
| | - Yujing Huang
- Department of Dermatology, The First Affiliated Hospital of Chongqing Medical University, No.1 Youyi Road, Yuzhong District, Chongqing, 400016, China
| | - Tingqiao Chen
- Department of Dermatology, The First Affiliated Hospital of Chongqing Medical University, No.1 Youyi Road, Yuzhong District, Chongqing, 400016, China
| | - Judan Zhong
- Department of Dermatology, The First Affiliated Hospital of Chongqing Medical University, No.1 Youyi Road, Yuzhong District, Chongqing, 400016, China
| | - Xinyi Shao
- Department of Dermatology, The First Affiliated Hospital of Chongqing Medical University, No.1 Youyi Road, Yuzhong District, Chongqing, 400016, China
| | - Yihuan Pu
- Department of Dermatology, Chongqing People's Hospital, Chongqing Academy of Medical Sciences, Chongqing, 401121, China.
| | - Jin Chen
- Department of Dermatology, The First Affiliated Hospital of Chongqing Medical University, No.1 Youyi Road, Yuzhong District, Chongqing, 400016, China.
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Kim HY, Do HY, Park S, Kim KW, Min D, Lee EY, Shim D, Cho SY, Park JO, Lee CS, Nam SJ, Ko J. 2,4,6-Triphenyl-1-hexene, an Anti-Melanogenic Compound from Marine-Derived Bacillus sp. APmarine135. Mar Drugs 2024; 22:72. [PMID: 38393043 PMCID: PMC10890162 DOI: 10.3390/md22020072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 01/23/2024] [Accepted: 01/24/2024] [Indexed: 02/25/2024] Open
Abstract
Although melanin protects against ultraviolet radiation, its overproduction causes freckles and senile lentigines. Recently, various biological effects of metabolites derived from marine microorganisms have been highlighted due to their potential for biological and pharmacological applications. In this study, we discovered the anti-melanogenic effect of Bacillus sp. APmarine135 and verified the skin-whitening effect. Fractions of APmarine135 showed the melanin synthesis inhibition effect in B16 melanoma cells, and 2,4,6-triphenyl-1-hexene was identified as an active compound. The melanogenic capacity of 2,4,6-triphenyl-1-hexene (1) was investigated by assessing the intracellular melanin content in B16 cells. Treatment with 5 ppm of 2,4,6-triphenyl-1-hexene (1) for 72 h suppressed the α-melanocyte-stimulating hormone (α-MSH)-induced intracellular melanin increase to the same level as in the untreated control group. Additionally, 2,4,6-triphenyl-1-hexene (1) treatment suppressed the activity of tyrosinase, the rate-limiting enzyme for melanogenesis. Moreover, 2,4,6-triphenyl-1-hexene (1) treatment downregulated tyrosinase, Tyrp-1, and Tyrp-2 expression by inhibiting the microphthalmia-associated transcription factor (MITF). Furthermore, 2,4,6-triphenyl-1-hexene (1) treatment decreased the melanin content in the three-dimensional (3D) human-pigmented epidermis model MelanoDerm and exerted skin-whitening effects. Mechanistically, 2,4,6-triphenyl-1-hexene (1) exerted anti-melanogenic effects by suppressing tyrosinase, Tyrp-1, and Tyrp-2 expression and activities via inhibition of the MITF. Collectively, these findings suggest that 2,4,6-triphenyl-1-hexene (1) is a promising anti-melanogenic agent in the cosmetic industry.
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Affiliation(s)
- Hye Yeon Kim
- Department of Beauty and Cosmetic Science, Eulji University, Seongnam 13135, Republic of Korea; (H.Y.K.); (D.S.)
| | - Hye-Yeon Do
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea; (H.-Y.D.); (E.-Y.L.)
| | - Saitbyul Park
- Basic Research & Innovation Division, AMOREPACIFIC R&I Center, Yongin 17074, Republic of Korea; (S.P.); (D.M.); (S.Y.C.)
| | - Keon Woo Kim
- Department of Natural Product Laboratory, Daebong LS Co., Ltd., Incheon 21697, Republic of Korea; (K.W.K.); (J.O.P.)
| | - Daejin Min
- Basic Research & Innovation Division, AMOREPACIFIC R&I Center, Yongin 17074, Republic of Korea; (S.P.); (D.M.); (S.Y.C.)
| | - Eun-Young Lee
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea; (H.-Y.D.); (E.-Y.L.)
| | - Dabin Shim
- Department of Beauty and Cosmetic Science, Eulji University, Seongnam 13135, Republic of Korea; (H.Y.K.); (D.S.)
| | - Sung Yeon Cho
- Basic Research & Innovation Division, AMOREPACIFIC R&I Center, Yongin 17074, Republic of Korea; (S.P.); (D.M.); (S.Y.C.)
| | - Jin Oh Park
- Department of Natural Product Laboratory, Daebong LS Co., Ltd., Incheon 21697, Republic of Korea; (K.W.K.); (J.O.P.)
| | - Chang Seok Lee
- Department of Beauty and Cosmetic Science, Eulji University, Seongnam 13135, Republic of Korea; (H.Y.K.); (D.S.)
| | - Sang-Jip Nam
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea; (H.-Y.D.); (E.-Y.L.)
| | - Jaeyoung Ko
- Basic Research & Innovation Division, AMOREPACIFIC R&I Center, Yongin 17074, Republic of Korea; (S.P.); (D.M.); (S.Y.C.)
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Inoue D, Narita T, Ono T, Ishikawa K, Maeno K, Aoki H, Motoyama A, Shibata T. A mechanism of melanogenesis mediated by E-cadherin downregulation and its involvement in solar lentigines. Int J Cosmet Sci 2023; 45:775-790. [PMID: 37522429 DOI: 10.1111/ics.12886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 07/12/2023] [Accepted: 07/27/2023] [Indexed: 08/01/2023]
Abstract
OBJECTIVE Intensive studies have revealed that pleiotropic melanocytic factors are associated with age-spot formation. Dysfunctional keratinocyte differentiation is thought to be an upstream cause of age-spot formation. Although it has been shown that keratinocyte differentiation is mediated by the cell-cell contact factor E-cadherin, its involvement in age-spot formation remains unknown. Thus, to determine the origin of age-spots and an integrated solution for the same, we focused on E-cadherin expression in the present study. METHODS First, we assessed the solar lentigines in cutaneous and cultured cells by means of immunofluorescence staining. Following that, keratinocytes treated with siRNAs against E-cadherin were co-cultured with melanocytes, and the secreted factors were identified by means of proteomic analysis of the culture supernatants. We also performed quantitative PCR to assess melanogenesis activity and screen ingredients. For behavioural analysis of melanocytes, we performed time-lapse imaging using confocal laser scanning microscopy. RESULTS E-cadherin expression was downregulated in the epidermis of the solar lentigines, suggesting its involvement in age-spot formation. E-cadherin knocked down keratinocytes not only promoted the secretion of melanocytic/inflammatory factors but also increased melanogenesis by upregulating the expression of melanogenesis factors. Furthermore, live-imaging showed that the downregulation of E-cadherin inhibited melanocyte dynamics and accelerated melanin uptake. Finally, we identified Rosa multiflora fruit extract as a solution that can upregulate E-cadherin expression in keratinocytes. CONCLUSION Our findings showed that E-cadherin downregulation triggers various downstream melanocytic processes, such as the secretion of melanocytic factors and melanogenesis. Additionally, we showed that the Rosa multiflora fruit extract upregulated E-cadherin expression in keratinocytes.
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Affiliation(s)
- Daigo Inoue
- Shiseido Co. Ltd., MIRAI Technology Institute, Yokohama, Japan
| | - Tomomi Narita
- Shiseido Co. Ltd., MIRAI Technology Institute, Yokohama, Japan
| | - Takayuki Ono
- Shiseido Co. Ltd., MIRAI Technology Institute, Yokohama, Japan
| | - Keiko Ishikawa
- Shiseido Co. Ltd., MIRAI Technology Institute, Yokohama, Japan
| | - Katsuyuki Maeno
- Shiseido Co. Ltd., MIRAI Technology Institute, Yokohama, Japan
| | - Hirofumi Aoki
- Shiseido Co. Ltd., MIRAI Technology Institute, Yokohama, Japan
| | - Akira Motoyama
- Shiseido Co. Ltd., MIRAI Technology Institute, Yokohama, Japan
| | - Takako Shibata
- Shiseido Co. Ltd., MIRAI Technology Institute, Yokohama, Japan
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8
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Zhang L, Ng K, Pham JP, Thoo S, Yang A, Kang M, Connor D, Kossard S, Parsi K. Pigmentation of lower limbs: Contribution of haemosiderin and melanin in chronic venous insufficiency and related disorders. Phlebology 2023; 38:657-667. [PMID: 37642293 DOI: 10.1177/02683555231196702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
BACKGROUND To determine the composition of skin pigmentation in chronic venous insufficiency (CVI) and other less common vascular conditions of lower limbs. METHODS Forty-five skin biopsies were obtained from 17 patients. Samples were taken from pigmented regions and compared with control non-lesional samples from the same patient. Perl's Prussian Blue was used to identify haemosiderin and Schmorl's for melanin. RESULTS Seven patients presented with CVI, one with concurrent livedo vasculopathy (LV). One patient had LV only. Two patients had acroangiodermatitis (AAD). Six patients had post-sclerotherapy pigmentation (PSP), one with concurrent post-inflammatory hyperpigmentation (PIH). One patient had PIH only. The predominant pigment in CVI samples was haemosiderin. C5-C6 patients showed increased epidermal melanin. LV, AAD, and PSP samples showed dermal haemosiderin but no increase in epidermal melanin. PIH samples showed prominent epidermal melanin whilst no haemosiderin was detected. CONCLUSION The predominant pigment in CVI and other vascular conditions was haemosiderin. Melanin was present in later stages of CVI (C5-C6) and in PIH.
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Affiliation(s)
- Lois Zhang
- Dermatology, Phlebology and Fluid Mechanics Research Laboratory, St Vincent's Centre for Applied Medical Research, Sydney, NSW, Australia
- Department of Dermatology, St. Vincent's Hospital, Sydney, NSW, Australia
| | - Kate Ng
- Dermatology, Phlebology and Fluid Mechanics Research Laboratory, St Vincent's Centre for Applied Medical Research, Sydney, NSW, Australia
- Faculty of Medicine, The University of New South Wales(UNSW), Sydney, NSW, Australia
| | - James P Pham
- Dermatology, Phlebology and Fluid Mechanics Research Laboratory, St Vincent's Centre for Applied Medical Research, Sydney, NSW, Australia
- Department of Dermatology, St. Vincent's Hospital, Sydney, NSW, Australia
- Faculty of Medicine, The University of New South Wales(UNSW), Sydney, NSW, Australia
| | - Samuel Thoo
- Dermatology, Phlebology and Fluid Mechanics Research Laboratory, St Vincent's Centre for Applied Medical Research, Sydney, NSW, Australia
- Department of Dermatology, St. Vincent's Hospital, Sydney, NSW, Australia
- Faculty of Medicine, The University of New South Wales(UNSW), Sydney, NSW, Australia
| | - Anes Yang
- Dermatology, Phlebology and Fluid Mechanics Research Laboratory, St Vincent's Centre for Applied Medical Research, Sydney, NSW, Australia
- Department of Dermatology, St. Vincent's Hospital, Sydney, NSW, Australia
- Faculty of Medicine, The University of New South Wales(UNSW), Sydney, NSW, Australia
| | - Mina Kang
- Dermatology, Phlebology and Fluid Mechanics Research Laboratory, St Vincent's Centre for Applied Medical Research, Sydney, NSW, Australia
- Department of Dermatology, St. Vincent's Hospital, Sydney, NSW, Australia
- Faculty of Medicine, The University of New South Wales(UNSW), Sydney, NSW, Australia
| | - David Connor
- Dermatology, Phlebology and Fluid Mechanics Research Laboratory, St Vincent's Centre for Applied Medical Research, Sydney, NSW, Australia
- Faculty of Medicine, The University of New South Wales(UNSW), Sydney, NSW, Australia
| | - Steven Kossard
- Faculty of Medicine, The University of New South Wales(UNSW), Sydney, NSW, Australia
- Kossard Dermatopathologists, Sydney, NSW, Australia
| | - Kurosh Parsi
- Dermatology, Phlebology and Fluid Mechanics Research Laboratory, St Vincent's Centre for Applied Medical Research, Sydney, NSW, Australia
- Department of Dermatology, St. Vincent's Hospital, Sydney, NSW, Australia
- Faculty of Medicine, The University of New South Wales(UNSW), Sydney, NSW, Australia
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Wang M, Huang X, Ouyang M, Lan J, Huang J, Li H, Lai W, Gao Y, Xu Q. A20 ameliorates advanced glycation end products-induced melanogenesis by inhibiting NLRP3 inflammasome activation in human dermal fibroblasts. J Dermatol Sci 2023; 112:71-82. [PMID: 37741724 DOI: 10.1016/j.jdermsci.2023.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 08/03/2023] [Accepted: 09/05/2023] [Indexed: 09/25/2023]
Abstract
BACKGROUND Advanced glycation end products (AGEs) promote melanogenesis through activating NLRP3 inflammasome in fibroblasts. Although A20 has been highlighted to inhibit NLRP3 inflammasome activation, its roles and mechanisms remain elusive in photoaging-associated pigmentation. OBJECTIVES To determine the significance of fibroblast A20 in AGEs-induced NLRP3 inflammasome activation and pigmentation. METHODS The correlation between A20 and AGEs or melanin was studied in sun-exposed skin and lesions of melasma and solar lentigo. We then investigated A20 level in AGEs-treated fibroblast and the effect of fibroblast A20 overexpression or knockdown on AGEs-BSA-induced NLRP3 inflammasome activation and pigmentation, respectively. Finally, the severity of NLRP3 inflammasome activation and pigmentation was evaluated after mice were injected intradermally with A20-overexpression adeno-associated virus and AGEs-BSA. RESULTS Dermal A20 expression was decreased and exhibited negative correlation with either dermal AGEs deposition or epidermal melanin level in sun-exposed skin and pigmentary lesions. Moreover, both AGEs-BSA and AGEs-collagen robustly decreased A20 expression via binding to RAGE in fibroblasts. Further, A20 overexpression or depletion significantly decreased or augmented AGEs-BSA-induced activation of NF-κB pathway and NLRP3 inflammasome and IL-18 production and secretion in fibroblasts, respectively. Importantly, fibroblast A20 potently repressed AGEs-BSA-stimulated melanin content,tyrosinase activity,and expression of microphthalmia-associated transcription factor and tyrosinase in melanocytes. Particularly, fibroblast A20 significantly abrogated AGEs-BSA-promoted melanogenesis in ex vivo skin and mouse models. Additionally, fibroblast A20 inhibited AGEs-BSA-activated MAPKs in melanocytes and the epidermis of ex vivo skin. CONCLUSIONS Fibroblast A20 suppresses AGEs-stimulate melanogenesis in photoaging-associated hyperpigmentation disorders by inhibiting NLRP3 inflammasome activation.
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Affiliation(s)
- Mengyao Wang
- Department of Dermato-Venereology, Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China
| | - Xianyin Huang
- Department of Dermato-Venereology, Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China
| | - Mengting Ouyang
- Department of Dermato-Venereology, Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China
| | - Jingjing Lan
- Department of Dermato-Venereology, Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China
| | - Jingqian Huang
- Department of Dermato-Venereology, Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China
| | - Hongpeng Li
- Department of Dermato-Venereology, Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China
| | - Wei Lai
- Department of Dermato-Venereology, Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China.
| | - Yifeng Gao
- Department of Dermato-Venereology, Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China.
| | - Qingfang Xu
- Department of Dermato-Venereology, Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China.
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Rani S, Pervaiz N, Parsad D, Kumar R. Differential expression of extracellular matrix proteins in the lesional skin of vitiligo patients. Arch Dermatol Res 2023; 315:2393-2402. [PMID: 37209167 DOI: 10.1007/s00403-023-02628-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 02/23/2023] [Accepted: 05/02/2023] [Indexed: 05/22/2023]
Abstract
Skin pigmentation is regulated by intricate interaction of the dermis and epidermis. The extracellular components present in the dermis play a very important role in the maintenance of skin homeostasis. Therefore, our objective was to check the expression of various ECM components secreted by the dermal fibroblasts in the lesional skin and non-lesional skin of vitiligo patients. For this study, skin punch biopsies (4 mm) were collected from lesional skin (n = 12), non-lesional skin (n = 6) of non-segmental vitiligo patient's (NSV) and healthy control skin (n = 10). Masson's trichrome staining was performed to check the collagen fibre. The expression of collagen type 1, IV, elastin, fibronectin, E-cadherin and integrin β1 was checked by real-time PCR and immunohistochemistry. In this study, we demonstrated an increased expression of collagen type 1 in the lesional skin of vitiligo patients. The expression of collagen type IV, fibronectin, elastin and adhesion components such as E-cadherin and integrin β1 was observed to be significantly decreased in the lesional skin of NSV patients as compared to healthy control, whereas insignificant difference was observed between non-lesional and control skin. Increased expression of collagen type 1 in the lesional skin of vitiligo patients might be inhibiting the migration of melanocytes, whereas the decreased expression of elastin, collagen type IV, fibronectin, E-cadherins and integrins in the lesional skin may inhibit adhesion, migration, growth and differentiation of cells.
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Affiliation(s)
- Seema Rani
- Department of Zoology, Hindu Girls College, Sonepat, 131001, India
| | - Naveed Pervaiz
- Department of Pharmaceutical Sciences, The University of Tennessee Health Science Center, Memphis, TN, USA
| | - Davinder Parsad
- Department of Dermatology Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Ravinder Kumar
- Department of Zoology, Hindu Girls College, Sonepat, 131001, India.
- Department of Pharmaceutical Sciences, The University of Tennessee Health Science Center, Memphis, TN, USA.
- Department of Zoology, Panjab University, Chandigarh, 160014, India.
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11
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Pan R, Hua T, Guo Q, Bai H, Jiang Y, Wang Z, Bi Y, Chen G, Wu X, Chang G. Identification of SNPs in MITF associated with beak color of duck. Front Genet 2023; 14:1161396. [PMID: 37671042 PMCID: PMC10475569 DOI: 10.3389/fgene.2023.1161396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 07/27/2023] [Indexed: 09/07/2023] Open
Abstract
Introduction: Beak color-a pigment-related trait-is an important feature of duck breeds. Recently, little research has addressed genetic mechanism of the beak colors in poultry, whereas the process and the regulation factors of melanin deposition have been well described. Methods: To investigate the genetic mechanism of beak colors, we conducted an integrated analysis of genomic selection signatures to identify a candidate site associated with beak color. For this, we used black-billed (Yiyang I meat duck synthetic line H1, H2, H3&HF) and yellow-billed ducks (Cherry Valley ducks and white feather Putian black duck). Quantitative real-time PCR and genotyping approaches were used to verify the function of the candidate site. Results: We identified 3,895 windows containing 509 genes. After GO and KEGG enrichment analysis, nine genes were selected. Ultimately, MITF was selected by comparing the genomic differentiation (FST). After loci information selection, 41 extreme significantly different loci were selected, which are all located in intron regions of MITF and are in almost complete linkage disequilibrium. Subsequently, the site ASM874695v1:10:g.17814522T > A in MITF was selected as the marker site. Furthermore, we found that MITF expression is significantly higher in black-beaked ducks than in yellow-beaked ducks of the F2 generation (p < 0.01). After genotyping, most yellow-billed individuals are found with homozygous variant; at the same time, there are no birds with homozygous variant in black-billed populations, while the birds with homozygous and heterozygous variant share the same proportion. Conclusion: MITF plays a very critical role in the melanogenesis and melanin deposition of duck beaks, which can effectively affect the beak color. The MITF site, ASM874695v1:10:g.17814522T > A could be selected as a marker site for the duck beak color phenotype.
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Affiliation(s)
- Rui Pan
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Tian Hua
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Qixin Guo
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Hao Bai
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Yong Jiang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Zhixiu Wang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Yulin Bi
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Guohong Chen
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Xinsheng Wu
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, China
| | - Guobin Chang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, China
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12
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Shin SH, Lee YH, Rho NK, Park KY. Skin aging from mechanisms to interventions: focusing on dermal aging. Front Physiol 2023; 14:1195272. [PMID: 37234413 PMCID: PMC10206231 DOI: 10.3389/fphys.2023.1195272] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 05/02/2023] [Indexed: 05/28/2023] Open
Abstract
Skin aging is a multifaceted process that involves intrinsic and extrinsic mechanisms that lead to various structural and physiological changes in the skin. Intrinsic aging is associated with programmed aging and cellular senescence, which are caused by endogenous oxidative stress and cellular damage. Extrinsic aging is the result of environmental factors, such as ultraviolet (UV) radiation and pollution, and leads to the production of reactive oxygen species, ultimately causing DNA damage and cellular dysfunction. In aged skin, senescent cells accumulate and contribute to the degradation of the extracellular matrix, which further contributes to the aging process. To combat the symptoms of aging, various topical agents and clinical procedures such as chemical peels, injectables, and energy-based devices have been developed. These procedures address different symptoms of aging, but to devise an effective anti-aging treatment protocol, it is essential to thoroughly understand the mechanisms of skin aging. This review provides an overview of the mechanisms of skin aging and their significance in the development of anti-aging treatments.
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Affiliation(s)
- Sun Hye Shin
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Yoon Hwan Lee
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Nark-Kyoung Rho
- Leaders Aesthetic Laser & Cosmetic Surgery Center, Seoul, Republic of Korea
| | - Kui Young Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Republic of Korea
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13
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Goncalves K, De Los Santos Gomez P, Costello L, Smith L, Mead H, Simpson A, Przyborski S. Investigation into the effect of skin tone modulators and exogenous stress on skin pigmentation utilizing a novel bioengineered skin equivalent. Bioeng Transl Med 2023; 8:e10415. [PMID: 36925688 PMCID: PMC10013773 DOI: 10.1002/btm2.10415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 06/08/2022] [Accepted: 08/30/2022] [Indexed: 11/11/2022] Open
Abstract
Human skin equivalents (HSEs) are a popular technology due to limitations in animal testing, particularly as they recapitulate aspects of structure and function of human skin. Many HSEs contain two basic cell types to model dermal and epidermal compartments, however this limits their application, particularly when investigating the effect of exogenous stressors on skin health. We describe the development of a novel platform technology that accurately replicates skin pigmentation in vitro. Through incorporation of melanocytes, specialized pigment producing cells, into the basal layer of the epidermis we are able to re-create skin pigmentation in vitro. We observe apical distribution of melanin within keratinocytes and formation of supranuclear caps (SPNCs), only when the epidermal compartment is co-cultured with a dermal compartment, leading to the conclusion that fibroblast support is essential for correct pigment organization. We also evaluate the commonly observed phenomenon that pigmentation darkens with time in vitro, which we further explore through mechanical exfoliation to remove a build-up of melanin deposits in the stratum corneum. Finally, we demonstrate the application of a pigmented HSE to investigate drug modulation of skin tone and protection from UV-induced damage, highlighting the importance of such a model in the wider context of skin biology.
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Affiliation(s)
| | | | | | - Lucy Smith
- Department of Biosciences Durham University Durham UK
| | - Hugh Mead
- Department of Biosciences Durham University Durham UK
| | - Amy Simpson
- Department of Biosciences Durham University Durham UK
| | - Stefan Przyborski
- Department of Biosciences Durham University Durham UK.,Reprocell Europe Ltd Glasgow UK
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14
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Pathogenic Th2 Cytokine Profile Skewing by IFN-γ-Responding Vitiligo Fibroblasts via CCL2/CCL8. Cells 2023; 12:cells12020217. [PMID: 36672151 PMCID: PMC9856695 DOI: 10.3390/cells12020217] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 12/31/2022] [Accepted: 01/03/2023] [Indexed: 01/06/2023] Open
Abstract
PURPOSE Vitiligo is a T cell-mediated skin depigmentation disease. Though treatments arresting disease progression and inducing repigmentation are available, the efficacy of these options is often limited and poorly sustained. How stromal signals contribute to the interferon-γ-dominant skin niches is unclear. This study aims to determine how fibroblasts participate in the IFN-γ-dominant vitiligo niche. PATIENTS AND METHODS Mouse vitiligo models were established. Fibroblasts from control and vitiligo mice were extracted for RNA sequencing. In vitro IFN-γ stimulation was performed to verify the JAK-STAT pathway by qPCR and Western blot. T cell polarization with chemokines was measured by flow cytometry. Protein levels in tissues were also examined by IHC. RESULTS The vitiligo mouse model recapitulates the human CD8-IFN-γ pathway. RNA sequencing revealed elevated chemokine CCL2 and CCL8 in vitiligo fibroblast, which may be regulated by the JAK-STAT signaling. Such phenomenon is verified by JAK inhibitor peficitinib in vitro. Moreover, CCL2 addition into the naïve T polarization system promoted type 2 cytokines secretion, which represents a hallmark of vitiligo lesions. CONCLUSION Dermal fibroblasts, a principal constituent of skin structure, respond to IFN-γ by skewing T cells towards a type 2 cytokine profile via CCL2 and CCL8, which can be abrogated by JAK inhibitor peficitinib.
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15
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A Novel Furocoumarin Derivative, 5-((diethylamino)me-13 thyl)-3-phenyl-7H-furo [3,2-g] chromen-7-one Upregulates Melanin Synthesis via the Activation of cAMP/PKA and MAPKs Signal Pathway: In Vitro and In Vivo Study. Int J Mol Sci 2022; 23:ijms232214190. [PMID: 36430668 PMCID: PMC9694462 DOI: 10.3390/ijms232214190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/11/2022] [Accepted: 11/14/2022] [Indexed: 11/18/2022] Open
Abstract
Psoralen, a major furocoumarin component of the Fructus Psoralen (FP), in combination with ultraviolet radiation, cures abnormal pigmentation disorder. In a previous study, we synthesized a series of linear furocoumarins with different substituents, out of which 5-((diethylamino)methyl)-3-phenyl-7H-furo [3,2-g] chromen-7-one (encoded as 5D3PC) showed better pigmenting effect than others in B16 cells. In this study, we examined the mechanism underlying the melanogenic effect of 5D3PC both in vivo and in vitro. To examine the pigmentation effect, the B16 and human melanocyte cell lines, PIG1 and PIG3V melanocytes were incubated with 5D3PC. In animal experiments, C57BL/6 mice received 5% hydroquinone and were administrated with 5D3PC for 30 days. 5D3PC upregulated the melanin synthesis and tyrosinase in B16 cell, PIG1 and PIG3V. The expression level of tyrosinase (TYR), tyrosinase-related protein-1 (TRP-1) and tyrosinase-related protein-2 (TRP-2), microphthalmia-associated transcription factor (MITF), cyclic adenosine monophosphate (cAMP), phosphorylation of cAMP-responsive element binding protein (p-CREB), phosphorylation of p38 mitogen-activated protein kinase (MAPK), c- phosphorylation of Jun N-terminal kinase (p-JNK) was significantly higher in 5D3PC-treated B16 cells. The oral administration of 5D3PC attenuated the depigmentation of the C57BL/6 vitiligo mice model by increasing the numbers of melanin-containing hair follicles, melanogenic protein, and melanogenesis-relative genes expression in skin tissues.
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16
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Shaw TK, Paul P, Chatterjee B. Research-based findings on scope of liposome-based cosmeceuticals: an updated review. FUTURE JOURNAL OF PHARMACEUTICAL SCIENCES 2022. [DOI: 10.1186/s43094-022-00435-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Cosmeceuticals are cosmetic products with biologically active components that have drug-like benefits. Cosmeceuticals are currently rapidly growing segments encompassing the personal care industry and numerous topical cosmetics-based therapies for treating different skin conditions. The barrier nature of skin causes limitations to topical treatment. The effectiveness of this cosmeceutical product has been enhanced a few folds by using nanotechnological modifications.
Main body
PubMed electronic searches for the literature were performed using combinations of the following terms: “cosmeceutical,” “liposome-based cosmeceuticals,” “acne and liposome,” “photo-aging and liposome,” “hyperpigmentation and liposome,” “wrinkles and liposome,” “fungal infections and liposome,” and “hair damage and liposome” from the earliest publication date available to January 5, 2022. Among the various nanotechnological approaches, liposomes offer numerous advantages such as topical cosmeceutical products, starting from improved moisturization, biodegradability, biocompatibility, enhanced permeation and retention, improved bioavailability of the active ingredients, increased esthetic appeal of cosmeceutical products, slow and extended dermal release. This review outlines various liposome-based cosmeceutical products that has been investigated to treat skin disorders such as photoaging, wrinkles, hyperpigmentation, hair damage and fungal infections.
Conclusion
Liposome-based cosmeceuticals provide a better opportunity to deliver therapeutic moiety for various skin conditions and offer potential promise for future clinical applications.
Graphical Abstract
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Montuori E, Capalbo A, Lauritano C. Marine Compounds for Melanoma Treatment and Prevention. Int J Mol Sci 2022; 23:ijms231810284. [PMID: 36142196 PMCID: PMC9499452 DOI: 10.3390/ijms231810284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/11/2022] [Accepted: 09/01/2022] [Indexed: 11/16/2022] Open
Abstract
Melanoma is considered a multifactorial disease etiologically divided into melanomas related to sun exposure and those that are not, but also based on their mutational signatures, anatomic site, and epidemiology. The incidence of melanoma skin cancer has been increasing over the past decades with 132,000 cases occurring globally each year. Marine organisms have been shown to be an excellent source of natural compounds with possible bioactivities for human health applications. In this review, we report marine compounds from micro- and macro-organisms with activities in vitro and in vivo against melanoma, including the compound Marizomib, isolated from a marine bacterium, currently in phase III clinical trials for melanoma. When available, we also report active concentrations, cellular targets and mechanisms of action of the mentioned molecules. In addition, compounds used for UV protection and melanoma prevention from marine sources are discussed. This paper gives an overview of promising marine molecules which can be studied more deeply before clinical trials in the near future.
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Affiliation(s)
- Eleonora Montuori
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno d’Alcontres 31, 98166 Messina, Italy
- Department of Ecosustainable Marine Biotechnology, Stazione Zoologica Anton Dohrn, Via Acton 55, 80133 Napoli, Italy
| | - Anita Capalbo
- Department of Ecosustainable Marine Biotechnology, Stazione Zoologica Anton Dohrn, Via Acton 55, 80133 Napoli, Italy
| | - Chiara Lauritano
- Department of Ecosustainable Marine Biotechnology, Stazione Zoologica Anton Dohrn, Via Acton 55, 80133 Napoli, Italy
- Correspondence: ; Tel.: +39-0815833221
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BCI-215, a Dual-Specificity Phosphatase Inhibitor, Reduces UVB-Induced Pigmentation in Human Skin by Activating Mitogen-Activated Protein Kinase Pathways. Molecules 2022; 27:molecules27175449. [PMID: 36080217 PMCID: PMC9458123 DOI: 10.3390/molecules27175449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/20/2022] [Accepted: 08/23/2022] [Indexed: 11/17/2022] Open
Abstract
Background: The dysregulation of melanin production causes skin-disfiguring ultraviolet (UV)-associated hyperpigmented spots. Previously, we found that the activation of c-Jun N-terminal kinase (JNK), a mitogen-activated protein kinase (MAPK), inhibited melanogenesis. Methods: We selected BCI-215 as it may modify MAPK expression via a known function of a dual-specificity phosphatase (DUSP) 1/6 inhibitor. B16F10 melanoma cells, Mel-ab cells, human melanocytes, and a coculture were used to assess the anti-melanogenic activity of BCI-215. The molecular mechanisms were deciphered by assaying the melanin content and cellular tyrosinase activity via immunoblotting and RT-PCR. Results: BCI-215 was found to suppress basal and cAMP-stimulated melanin production and cellular tyrosinase activity in vitro through the downregulation of microphthalmia-associated transcription factor (MITF) protein and its downstream enzymes. The reduction in MITF expression caused by BCI-215 was found to be due to all three types of MAPK activation, including extracellular signal-regulated kinase (ERK), JNK, and p38. The degree of activation was greater in ERK. A phosphorylation of the β-catenin pathway was also demonstrated. The melanin index, expression of MITF, and downstream enzymes were well-reduced in UVB-irradiated ex vivo human skin by BCI-215. Conclusions: As BCI-215 potently inhibits UV-stimulated melanogenesis, small molecules of DUSP-related signaling modulators may provide therapeutic benefits against pigmentation disorders.
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Abstract
Melasma is a multifactorial dyschromia that results from exposure to external factors (such as solar radiation) and hormonal factors (such as sex hormones and pregnancy), as well as skin inflammation (such as contact dermatitis and esthetic procedures), in genetically predisposed individuals. Beyond hyperfunctional melanocytes, skin with melasma exhibits a series of structural and functional alterations in the epidermis, basement membrane, and upper dermis that interact to elicit and sustain a focal hypermelanogenic phenotype. Evolution in the knowledge of the genetic basis of melasma and the cutaneous response to solar radiation, as well as the roles of endocrine factors, antioxidant system, endothelium proliferation, fibroblast senescence, mast cell degranulation, autophagy deficits of the melanocyte, and the paracrine regulation of melanogenesis, will lead to the development of new treatments and preventive strategies. This review presents current knowledge on these aspects of the pathogenesis of melasma and discusses the effects of specific treatments and future research on these issues.
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20
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Fibroblast morphology, growth rate and gene expression in facial melasma. An Bras Dermatol 2022; 97:575-582. [PMID: 35840442 PMCID: PMC9453522 DOI: 10.1016/j.abd.2021.09.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 09/07/2021] [Accepted: 09/15/2021] [Indexed: 11/26/2022] Open
Abstract
Background In addition to melanocytic hyperfunction, changes are observed in the upper dermis of melasma, and fibroblasts play a central role in collagen synthesis and pigmentation induction. Objective To explore the morphology, growth rate, and gene expression profile of fibroblasts from the skin with melasma in comparison to fibroblasts from the adjacent healthy skin. Methods Ten women with facial melasma were biopsied (lesion and adjacent healthy skin), and the fragments were processed for fibroblast culture. Samples from five participants were seeded to evaluate growth (days 2, 5 and 8) and senescence (SA-β-gal) curves. The samples from the other participants were submitted to real-time PCR to comparatively evaluation of the expression of 39 genes. Results Cultured fibroblasts from melasma skin were morphologically less fusiform in appearance and on average a 34% (95% CI 4%‒63%) greater proportion of cells labeled with SA-β-gal than the fibroblasts from the adjacent skin. The cell growth rate was lower for the melasma samples after eight days (p < 0.01). TheWNT3A, EDN3, ESR2, PTG2, MMP1, and SOD2 genes were up-regulated, whereas the COL4A1, CSF2, DKK3, COL7A1, TIMP4, CCL2, and CDH11 genes were down-regulated in melasma skin fibroblasts when compared to the ones from adjacent healthy skin. Study limitations Small sample size; absence of functional tests. Conclusions Fibroblasts from the skin with melasma showed a lower growth rate, less fusiform morphology and greater accumulation of SA-β-gal than those from adjacent photo exposed skin. Moreover, their gene expression profile comprised factors that may contribute to upper dermis damage and sustained melanogenesis.
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Kim DH, Lee SJ, Seo SH, Ahn HH, Kim BJ, Sun W, Rhyu IJ. Three-dimensional imaging for the analysis of human epidermal melanocytes. Pigment Cell Melanoma Res 2022; 35:534-538. [PMID: 35620945 DOI: 10.1111/pcmr.13051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 05/02/2022] [Accepted: 05/23/2022] [Indexed: 11/30/2022]
Abstract
Three-dimensional (3-D) analysis of human epidermal melanocytes is required for deeper understanding of melanocytic disorders. The purpose of this study was to standardize 3-D imaging and quantification for the evaluation of epidermal melanocytes. The epidermal specimen was obtained using the suction blister method from a patient with melanocytic nevus on the forearm skin. Cutaneous ACT-PRESTO, the tissue-clearing and labeling technique, was subsequently performed. With the 3-D image analysis program, morphological reconstruction and quantification of selected perilesional and melanocytic nevus areas were possible. The region of melanocytic nevus showed higher numbers of total melanocytic dendrites and similar numbers of cell bodies compared with perilesional area. In addition, the mean area and volume of cell bodies increased in the melanocytic nevus area compared with the results in the perilesional area. The 3-D evaluation method of human epidermal melanocytes can be applied to investigate novel pathologies related to hyper- or hypo-pigmentary disorders.
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Affiliation(s)
- Dai Hyun Kim
- Department of Dermatology, Korea University College of Medicine, Seoul, South Korea.,Department of Anatomy, Korea University College of Medicine, Seoul, South Korea
| | - Se Jeong Lee
- Department of Anatomy, Korea University College of Medicine, Seoul, South Korea
| | - Soo Hong Seo
- Department of Dermatology, Korea University College of Medicine, Seoul, South Korea
| | - Hyo Hyun Ahn
- Department of Dermatology, Korea University College of Medicine, Seoul, South Korea
| | - Byung-Jo Kim
- Department of Neurology, Korea University College of Medicine, Seoul, South Korea
| | - Woong Sun
- Department of Anatomy, Korea University College of Medicine, Seoul, South Korea.,Division of Brain Korea 21 Plus Program for Biomedical Science, Korea University College of Medicine, Seoul, South Korea
| | - Im Joo Rhyu
- Department of Anatomy, Korea University College of Medicine, Seoul, South Korea.,Division of Brain Korea 21 Plus Program for Biomedical Science, Korea University College of Medicine, Seoul, South Korea
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22
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Anvery N, Christensen RE, Dirr MA. Management of post-inflammatory hyperpigmentation in skin of color: A short review. J Cosmet Dermatol 2022; 21:1837-1840. [PMID: 35289059 DOI: 10.1111/jocd.14916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 01/23/2022] [Accepted: 03/09/2022] [Indexed: 11/29/2022]
Abstract
Post-inflammatory hyperpigmentation (PIH) is a common cosmetic complaint affecting patient quality of life. PIH has been proven to disproportionately affect skin of color. While several treatment options exist, special consideration must be given when managing PIH in patients of color, as topical treatments and aesthetic procedures, such as chemical peels and lasers, may either exacerbate or prove ineffective against PIH.
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Affiliation(s)
- Noor Anvery
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Rachel E Christensen
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - McKenzie A Dirr
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
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23
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Mok HP, Wen L, Lin X, Lin X, Liao N, Zhang G. Submuscular Implant-Based Breast Reconstruction Using a Musculofascial Pocket Formed by the Pectoralis Major Muscle and the Serratus Anterior Muscle Fascia: A Novel Surgical Approach. World J Surg 2022; 46:1451-1456. [PMID: 35355101 DOI: 10.1007/s00268-022-06522-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/26/2022] [Indexed: 12/01/2022]
Abstract
BACKGROUND Subpectoral implant-based breast reconstruction following mastectomy commonly severs the inferior border of the pectoralis major muscle for better projection of the lower pole. This can affect a patient's postoperative motor function and result in animation deformity. Implant-based breast reconstruction using partial muscle coverage with an acellular dermal matrix (ADM) can be costly. There is an unmet clinical need for a novel surgical method for submuscular implant-based breast reconstruction. METHODS We describe an innovative technique for submuscular implant-based breast reconstruction following mastectomy. The approach utilizes the serratus anterior muscle fascia connected to the lateral margin of the pectoralis major muscle to form a lateral tissue pocket for implant coverage. This method preserves the inferior border of the pectoralis major muscle and minimizes the size of ADM coverage. Patient satisfaction on the BREAST-Q Reconstruction Module and complications were assessed 12 months after surgery. RESULTS The novel surgical design was safe and used minimal ADM (6 × 5cm2). Mean satisfaction with breasts was 61 ± 4.7 (range, 48-73), mean psychosocial well-being was 66 ± 10 (range, 50-93), and mean sexual well-being was 47 ± 7.8 (range, 27-70). Animation deformity was avoided by preserving the inferior border of the pectoralis major muscle. Rates of revision (7.6%) and postsurgical seroma (3.4%) were low, and capsular contracture was minimal. CONCLUSIONS Submuscular implant-based breast reconstruction following mastectomy utilizing the serratus anterior muscle fascia connected to the lateral margin of the pectoralis major muscle to form a lateral tissue pocket for implant coverage is safe, feasible, and generates good aesthetic outcomes.
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Affiliation(s)
- Hsiao-Pei Mok
- Department of Breast Cancer, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, No. 106, Zhongshan 2 Road, Guangzhou, 510120, Guangdong, China
| | - Lingzhu Wen
- Department of Breast Cancer, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, No. 106, Zhongshan 2 Road, Guangzhou, 510120, Guangdong, China
| | - Xiaoyi Lin
- Department of Breast Cancer, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, No. 106, Zhongshan 2 Road, Guangzhou, 510120, Guangdong, China
| | - Xin Lin
- Department of Breast Cancer, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, No. 106, Zhongshan 2 Road, Guangzhou, 510120, Guangdong, China
| | - Ning Liao
- Department of Breast Cancer, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, No. 106, Zhongshan 2 Road, Guangzhou, 510120, Guangdong, China.
| | - Guochun Zhang
- Department of Breast Cancer, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, No. 106, Zhongshan 2 Road, Guangzhou, 510120, Guangdong, China.
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24
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Boonjing S, Pongrakhananon V, Sittiwong W, Arunrungvichian K, Maniratanachote R, Chetprayoon P. A tiered approach for evaluation of anti-melanogenic activity of trans-N-coumaroyltyramine derivatives. Exp Dermatol 2022; 31:1177-1187. [PMID: 35325487 DOI: 10.1111/exd.14569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 02/28/2022] [Accepted: 03/22/2022] [Indexed: 11/29/2022]
Abstract
Skin hyperpigmentation is commonly treated by topical drug application. Several naturally occurring compounds exhibit attractive biological effects including anti-melanogenic activity. Chemically modified derivatives of those compounds are expected to be more efficient. However, efficacy and safety testing processes are of significant consideration to identify the most effective compound among them. Herein, we demonstrated a tiered approach to investigate the antipigmentation activity of 17 trans-N-coumaroyltyramine derivatives. First, we evaluated the in chemico antityrosinase activity, then the cytotoxicity of the most potent derivatives using a mitochondrial activity-based assay, followed with the in vitro anti-melanogenic activity in two dimensional (2D) monolayer human melanocytes. The selected derivatives were topically applied on a three dimensional (3D) pigmented-reconstructed human epidermis (pRhE) containing melanocytes and keratinocytes to evaluate their depigmenting activity. Two of the 17 derivatives displayed a significant reduction in pigmentation in the 3D pRhE, comparable to kojic acid, a known tyrosinase inhibitor. In addition, a molecular docking experiment indicated an interaction of the three derivatives and tyrosinase, suggesting that these derivatives have potent anti-melanogenic activity through tyrosinase inhibition. Our findings provide an alternative approach for investigating skin-whitening agents, thereby facilitating the research and development of skin-whitening products that need not be tested on animals.
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Affiliation(s)
- Sirima Boonjing
- Department of Pharmacology and Physiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Varisa Pongrakhananon
- Department of Pharmacology and Physiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, 10330, Thailand.,Preclinical Toxicity and Efficacy Assessment of Medicines and Chemicals Research Unit, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Wantanee Sittiwong
- Department of Chemistry, Faculty of Science and Technology, Thammasat University, Phaholyothin Road, Klong Luang, Phatum Thani 12120, Thailand
| | - Kuntarat Arunrungvichian
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Mahidol University, Bangkok, 10400, Thailand
| | - Rawiwan Maniratanachote
- Toxicology and Bio Evaluation Service Center, National Science and Technology Development Agency, Pathum Thani, 12120, Thailand
| | - Paninee Chetprayoon
- Toxicology and Bio Evaluation Service Center, National Science and Technology Development Agency, Pathum Thani, 12120, Thailand
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25
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Flori E, Mastrofrancesco A, Mosca S, Ottaviani M, Briganti S, Cardinali G, Filoni A, Cameli N, Zaccarini M, Zouboulis CC, Picardo M. Sebocytes contribute to melasma onset. iScience 2022; 25:103871. [PMID: 35252805 PMCID: PMC8891974 DOI: 10.1016/j.isci.2022.103871] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 12/14/2021] [Accepted: 01/28/2022] [Indexed: 12/30/2022] Open
Abstract
Melasma is a hyperpigmentary disorder with photoaging features, whose manifestations appear on specific face areas, rich in sebaceous glands (SGs). To explore the SGs possible contribution to the onset, the expression of pro-melanogenic and inflammatory factors from the SZ95 SG cell line exposed to single or repetitive ultraviolet (UVA) radiation was evaluated. UVA up-modulated the long-lasting production of α-MSH, EDN1, b-FGF, SCF, inflammatory cytokines and mediators. Irradiated SZ95 sebocyte conditioned media increased pigmentation in melanocytes and the expression of senescence markers, pro-inflammatory cytokines, and growth factors regulating melanogenesis in fibroblasts cultures. Cocultures experiments with skin explants confirmed the role of sebocytes on melanogenesis promotion. The analysis on sebum collected from melasma patients demonstrated that in vivo sebocytes from lesional areas express the UVA-activated pathways markers observed in vitro. Our results indicate sebocytes as one of the actors in melasma pathogenesis, inducing prolonged skin cell stimulation, contributing to localized dermal aging and hyperpigmentation.
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Affiliation(s)
- Enrica Flori
- Laboratory of Cutaneous Physiopathology and Integrated Center of Metabolomics Research, San Gallicano Dermatological Institute, IRCCS, Rome, Italy
| | - Arianna Mastrofrancesco
- Laboratory of Cutaneous Physiopathology and Integrated Center of Metabolomics Research, San Gallicano Dermatological Institute, IRCCS, Rome, Italy
| | - Sarah Mosca
- Laboratory of Cutaneous Physiopathology and Integrated Center of Metabolomics Research, San Gallicano Dermatological Institute, IRCCS, Rome, Italy
| | - Monica Ottaviani
- Laboratory of Cutaneous Physiopathology and Integrated Center of Metabolomics Research, San Gallicano Dermatological Institute, IRCCS, Rome, Italy
| | - Stefania Briganti
- Laboratory of Cutaneous Physiopathology and Integrated Center of Metabolomics Research, San Gallicano Dermatological Institute, IRCCS, Rome, Italy
| | - Giorgia Cardinali
- Laboratory of Cutaneous Physiopathology and Integrated Center of Metabolomics Research, San Gallicano Dermatological Institute, IRCCS, Rome, Italy
| | - Angela Filoni
- Dermatology Department, San Gallicano Dermatological Institute, IRCCS, Rome, Italy
| | - Norma Cameli
- Dermatology Department, San Gallicano Dermatological Institute, IRCCS, Rome, Italy
| | - Marco Zaccarini
- Genetic Research, Molecular Biology and Dermatopathology Unit, San Gallicano Dermatological Institute, IRCCS, Rome, Italy
| | - Christos C Zouboulis
- Departments of Dermatology, Venereology, Allergology and Immunology, Dessau Medical Center, Brandenburg Medical School Theodore Fontane and Faculty of Health Sciences Brandenburg, Dessau, Germany
| | - Mauro Picardo
- Laboratory of Cutaneous Physiopathology and Integrated Center of Metabolomics Research, San Gallicano Dermatological Institute, IRCCS, Rome, Italy
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26
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Characterization of a melanocyte progenitor population in human interfollicular epidermis. Cell Rep 2022; 38:110419. [PMID: 35235792 DOI: 10.1016/j.celrep.2022.110419] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 08/23/2021] [Accepted: 02/01/2022] [Indexed: 11/22/2022] Open
Abstract
It is still unknown whether the human interfollicular epidermis harbors a reservoir of melanocyte precursor cells. Here, we clearly distinguish between three distinct types of melanocytes in human interfollicular epidermis: (1) cKit+CD90-, (2) cKit+CD90+, and (3) cKit-CD90+. Importantly, we identify the Kit tyrosine kinase receptor (cKit) as a marker expressed specifically in mature, melanin-producing melanocytes. Thus, both cKit+CD90- and cKit+CD90+ cells represent polydendritic, pigmented mature melanocytes, whereas cKit-CD90+ cells display bipolar, non-dendritic morphology with reduced melanin content. Additionally, using tissue-engineered pigmented dermo-epidermal skin substitutes (melDESSs), we reveal that the cKit expression also plays an important role during melanogenesis in melDESS in vivo. Interestingly, cKit-CD90+ cells lack the expression of markers such as HMB45, TYR, and TRP1 in vitro and in vivo. However, they co-express neural-crest progenitor markers and demonstrate multilineage differentiation potential in vitro. Hence, we propose that cKit-CD90+ cells constitute the precursor melanocyte reservoir in human interfollicular epidermis.
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27
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Kim D, Lee M, Yang JH, Yang JS, Kim OK. Dual Skin-Whitening and Anti-wrinkle Function of Low-Molecular-Weight Fish Collagen. J Med Food 2022; 25:192-204. [PMID: 35148197 DOI: 10.1089/jmf.2021.k.0124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
In this study, we investigated the protective effects of low-molecular-weight fish collagen from tilapia against melanogenesis in melanocytes, ultraviolet B (UVB)-irradiated Hs27 skin fibroblasts, and hairless mice. We observed collagen production-related pathways in UVB-irradiated Hs27 skin fibroblasts and hairless mice, and the melanogenesis-related pathways in melanocyte and UVB-irradiated hairless mice. The collagen production-related pathways were activated in the UVB-irradiated Hs27 skin fibroblasts and hairless mice. In addition, UVB exposure stimulated the melanogenesis-related pathways in melanocytes and hairless mice. However, treatment with low-molecular-weight fish collagen significantly increased the messenger RNA expressions of collagen production-related factors and significantly decreased the production of cytokines. Furthermore, treatment with low-molecular-weight fish collagen suppressed melanogenesis by inhibiting glutathione synthesis and downregulating melanocyte-inducing transcription factor expression through the suppression of cyclic AMP/protein kinase A/cAMP-responsive binding protein signaling and nitric oxide production. Low-molecular-weight fish collagen exerts protective effects against UVB-induced photoaging, through anti-inflammatory, antioxidant, and anti-melanogenesis activities and could be used for developing effective natural anti-photoaging products.
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Affiliation(s)
- Dakyung Kim
- Department of Medical Nutrition, Kyung Hee University, Yongin, Korea
| | - Minhee Lee
- Department of Medical Nutrition, Kyung Hee University, Yongin, Korea
| | | | | | - Ok-Kyung Kim
- Division of Food and Nutrition and Human Ecology Research Institute, Chonnam National University, Gwangju, Korea
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28
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Wang J, Jarrold B, Zhao W, Deng G, Moulton L, Laughlin T, Hakozaki T. The combination of sucrose dilaurate and sucrose laurate suppresses HMGB1: an enhancer of melanocyte dendricity and melanosome transfer to keratinocytes. J Eur Acad Dermatol Venereol 2022; 36 Suppl 3:3-11. [PMID: 35014730 DOI: 10.1111/jdv.17846] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/22/2021] [Accepted: 11/26/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Hyperpigmented spots are common issues in all ethnicities, involving multiple intrinsic and extrinsic factors such as UVB exposure, hormone balance, inflammatory status and ageing. OBJECTIVES To determine (i) melanocyte dendricity in multiple facial spot types, (ii) impact of High Mobility Group Box 1 (HMGB1), and the combination of sucrose dilaurate and sucrose laurate (SDL) on melanogenesis and melanocyte dendricity, and (iii) SDL effect on facial spots in a human use test. METHODS Facial spot and adjacent non-spot skin biopsies were collected from Chinese women (age 20-70). Histological assessment of melanocyte dendricity was performed for 3 spot types (solar lentigo, melasma and postinflammatory hyperpigmentation) by immunofluorescent staining for c-kit/MITF. Keratinocyte, melanocyte and melanocyte-keratinocyte co-culture models were used to assess HMGB1 release by UVB radiation, the effects of HMGB1 and SDL on melanin production, melanocyte dendricity and melanosome transfer. The effect of an SDL-containing moisturizer on appearance of facial hyperpigmented spots was assessed against a vehicle control in an 8-week human use test. RESULTS Melanocytes in spot areas are more dendritic than melanocytes in adjacent non-spot skin across three investigated spot types. In cell culture models, a moderate UVB-radiation exposure caused release of HMGB1 from keratinocytes. HMGB1 did not alter melanin production in melanocytes, but enhanced melanocyte dendricity and melanosome transfer. SDL reduced HMGB1 release from keratinocytes, inhibited melanin production, reversibly suppressed melanocyte dendricity and reduced melanosome transfer. In the human use test, SDL-containing moisturizer reduced appearance of spots versus vehicle. CONCLUSION Increased melanocyte dendricity was observed in multiple types of facial spots. Addition of HMGB1 protein increased melanocyte dendricity and melanosome transfer in cell cultures, implicating potential involvement in spot formation. SDL suppressed melanin production, melanocyte dendricity and melanosome transfer in vitro and reduced appearance of spots in the use test, suggesting SDL is an effective solution to address hyperpigmented spot concerns.
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Affiliation(s)
- J Wang
- The Procter & Gamble Company, Mason Business Center, Mason, OH, USA
| | - B Jarrold
- The Procter & Gamble Company, Mason Business Center, Mason, OH, USA
| | - W Zhao
- The Procter & Gamble Company, Mason Business Center, Mason, OH, USA
| | - G Deng
- P&G Singapore Innovation Center, Singapore City, Singapore
| | - L Moulton
- The Procter & Gamble Company, Mason Business Center, Mason, OH, USA
| | - T Laughlin
- The Procter & Gamble Company, Mason Business Center, Mason, OH, USA
| | - T Hakozaki
- The Procter & Gamble Company, Mason Business Center, Mason, OH, USA
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29
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Sawutdeechaikul P, Kanokrungsee S, Sahaspot T, Thadvibun K, Banlunara W, Limcharoen B, Sansureerungsikul T, Rutwaree T, Oungeun M, Wanichwecharungruang S. Detachable dissolvable microneedles: intra-epidermal and intradermal diffusion, effect on skin surface, and application in hyperpigmentation treatment. Sci Rep 2021; 11:24114. [PMID: 34916571 PMCID: PMC8677736 DOI: 10.1038/s41598-021-03503-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 11/10/2021] [Indexed: 01/04/2023] Open
Abstract
Delivering bioactive compounds into skin tissue has long been a challenge. Using ex vivo porcine and rat skins, here we demonstrate that a detachable dissolvable microneedle (DDMN) array, a special dissolvable microneedle that allows needle detachment from the base within 2 min post administration, can effectively embed a model compound into epidermis and dermis. Diffusion of the compound from the needle embedding sites to the nearby skin tissue is demonstrated at various post administration periods. The relationship between the time that a conventional dissolvable microneedle array is left on skin without needle detachment from the base and the degree of skin surface abrasion at each microneedle penetration spot is also demonstrated on skin of human volunteers. Co-loading glutathione with vitamin C (vitC) can stabilize vitC in the DDMN. DDMN loaded with vitC and glutathione can help erasing post-acne-hyperpigmentation spots.
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Affiliation(s)
| | - Silada Kanokrungsee
- Faculty of Medicine, Skin Center, Srinakharinwirot University, Bangkok, Thailand
| | - Thanyapat Sahaspot
- Faculty of Medicine, Skin Center, Srinakharinwirot University, Bangkok, Thailand
| | - Kamonwan Thadvibun
- Faculty of Medicine, Skin Center, Srinakharinwirot University, Bangkok, Thailand
| | - Wijit Banlunara
- Department of Pathology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Center of Excellence in Materials and Bio-Interfaces, Chulalongkorn University, Bangkok, Thailand
| | - Benchaphorn Limcharoen
- Department of Anatomy, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Center of Excellence in Materials and Bio-Interfaces, Chulalongkorn University, Bangkok, Thailand
| | | | - Teeranut Rutwaree
- Mineed Technology, 142 Innovation Cluster 2, Thailand Science Park, Pathum Thani, Thailand
| | - Miranda Oungeun
- Department of Petrochemistry and Polymer Science, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Supason Wanichwecharungruang
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.
- Center of Excellence in Materials and Bio-Interfaces, Chulalongkorn University, Bangkok, Thailand.
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30
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Polat S, Trif M, Rusu A, Šimat V, Čagalj M, Alak G, Meral R, Özogul Y, Polat A, Özogul F. Recent advances in industrial applications of seaweeds. Crit Rev Food Sci Nutr 2021:1-30. [PMID: 34875930 DOI: 10.1080/10408398.2021.2010646] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Seaweeds have been generally utilized as food and alternative medicine in different countries. They are specifically used as a raw material for wine, cheese, soup, tea, noodles, etc. In addition, seaweeds are potentially good resources of protein, vitamins, minerals, carbohydrates, essential fatty acids and dietary fiber. The quality and quantity of biologically active compounds in seaweeds depend on season and harvesting period, seaweed geolocation as well as ecological factors. Seaweeds or their extracts have been studied as innovative sources for a variety of bioactive compounds such as polyunsaturated fatty acids, polyphenols, carrageenan, fucoidan, etc. These secondary metabolites have been shown to have antioxidant, antimicrobial, antiviral, anticancer, antidiabetic, anti-inflammatory, anti-aging, anti-obesity and anti-tumour properties. They have been used in pharmaceutical/medicine, and food industries since bioactive compounds from seaweeds are regarded as safe and natural. Therefore, this article provides up-to-date information on the applications of seaweed in different industries such as pharmaceutical, biomedical, cosmetics, dermatology and agriculture. Further studies on innovative extraction methods, safety issue and health-promoting properties should be reconsidered. Moreover, the details of the molecular mechanisms of seaweeds and their bioactive compounds for physiological activities are to be clearly elucidated.
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Affiliation(s)
- Sevim Polat
- Department of Marine Biology, Faculty of Fisheries, Cukurova University, Adana, Turkey
| | - Monica Trif
- Centre for Innovative Process Engineering (CENTIV) GmbH, Syke, Germany
| | - Alexandru Rusu
- CENCIRA Agrofood Research and Innovation Centre, Cluj-Napoca, Romania
| | - Vida Šimat
- University Department of Marine Studies, University of Split, Split, Croatia
| | - Martina Čagalj
- University Department of Marine Studies, University of Split, Split, Croatia
| | - Gonca Alak
- Department of Seafood Processing Technology, Faculty of Fisheries, Ataturk University, Erzurum, Turkey
| | - Raciye Meral
- Department of Food Engineering, Faculty of Engineering, Van Yüzüncü Yıl University, Van, Turkey
| | - Yesim Özogul
- Department of Seafood Processing Technology, Faculty of Fisheries, Cukurova University, Adana, Turkey
| | - Abdurahman Polat
- Department of Seafood Processing Technology, Faculty of Fisheries, Cukurova University, Adana, Turkey
| | - Fatih Özogul
- Department of Seafood Processing Technology, Faculty of Fisheries, Cukurova University, Adana, Turkey
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31
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Csekes E, Račková L. Skin Aging, Cellular Senescence and Natural Polyphenols. Int J Mol Sci 2021; 22:12641. [PMID: 34884444 PMCID: PMC8657738 DOI: 10.3390/ijms222312641] [Citation(s) in RCA: 79] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/13/2021] [Accepted: 11/18/2021] [Indexed: 01/10/2023] Open
Abstract
The skin, being the barrier organ of the body, is constitutively exposed to various stimuli impacting its morphology and function. Senescent cells have been found to accumulate with age and may contribute to age-related skin changes and pathologies. Natural polyphenols exert many health benefits, including ameliorative effects on skin aging. By affecting molecular pathways of senescence, polyphenols are able to prevent or delay the senescence formation and, consequently, avoid or ameliorate aging and age-associated pathologies of the skin. This review aims to provide an overview of the current state of knowledge in skin aging and cellular senescence, and to summarize the recent in vitro studies related to the anti-senescent mechanisms of natural polyphenols carried out on keratinocytes, melanocytes and fibroblasts. Aged skin in the context of the COVID-19 pandemic will be also discussed.
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Affiliation(s)
- Erika Csekes
- Centre of Experimental Medicine, Institute of Experimental Pharmacology and Toxicology, Slovak Academy of Sciences, Dúbravská Cesta 9, 841 04 Bratislava, Slovakia
| | - Lucia Račková
- Centre of Experimental Medicine, Institute of Experimental Pharmacology and Toxicology, Slovak Academy of Sciences, Dúbravská Cesta 9, 841 04 Bratislava, Slovakia
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32
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Jang B, Chung H, Jung H, Song HK, Park E, Choi HS, Jung K, Choe H, Yang S, Oh ES. Extracellular Vesicles from Korean Codium fragile and Sargassum fusiforme Negatively Regulate Melanin Synthesis. Mol Cells 2021; 44:736-745. [PMID: 34650007 PMCID: PMC8560586 DOI: 10.14348/molcells.2021.2167] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 07/27/2021] [Accepted: 08/17/2021] [Indexed: 12/21/2022] Open
Abstract
Although various marine ingredients have been exploited for the development of cosmetic products, no previous study has examined the potential of seaweed extracellular vesicles (EV) in such applications. Our results revealed that EV from Codium fragile and Sargassum fusiforme effectively decreased α-MSH-mediated melanin synthesis in MNT-1 human melanoma cells, associated with downregulation of MITF (microphthalmia-associated transcription factor), tyrosinase and TRP1 (tyrosinase-related proteins 1). The most effective inhibitory concentrations of EV were 250 μg/ml for S. fusiforme and 25 μg/ml for C. fragile, without affecting the viability of MNT-1 cells. Both EV reduced melanin synthesis in the epidermal basal layer of a three-dimensional model of human epidermis. Moreover, the application of the prototype cream containing C. fragile EV (final 5 μg/ml) yielded 1.31% improvement in skin brightness in a clinical trial. Together, these results suggest that EV from C. fragile and S. fusiforme reduce melanin synthesis and may be potential therapeutic and/or supplementary whitening agents.
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Affiliation(s)
- Bohee Jang
- Department of Life Sciences, The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 03760, Korea
| | - Heesung Chung
- Department of Life Sciences, The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 03760, Korea
| | - Hyejung Jung
- Department of Life Sciences, The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 03760, Korea
| | - Hyun-Kuk Song
- Department of Life Sciences, The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 03760, Korea
| | - Eunhye Park
- Department of Life Sciences, The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 03760, Korea
| | - Hack Sun Choi
- Subtropical/Tropical Organism Gene Bank, Jeju National University, Jeju 63243, Korea
| | | | - Han Choe
- Department of Physiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea
| | | | - Eok-Soo Oh
- Department of Life Sciences, The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 03760, Korea
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33
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Shi HX, Zhang RZ, Xiao L, Wang L. Effects of keratinocyte-derived and fibroblast-derived exosomes on human epidermal melanocytes. Indian J Dermatol Venereol Leprol 2021; 88:322-331. [PMID: 34951940 DOI: 10.25259/ijdvl_1087_19] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Accepted: 05/01/2021] [Indexed: 11/04/2022]
Abstract
BACKGROUND Exosomes have been demonstrated to carry proteins, membrane lipids, mRNAs and microRNAs which can be transferred to surrounding cells and regulate the functions of those recipient cells. OBJECTIVES The objective of the study was to investigate the effects of exosomes released by keratinocytes and fibroblasts on the proliferation, tyrosinase activity and melanogenesis of melanocytes. METHODS Melanocytes, keratinocytes and fibroblasts obtained from human foreskin were cultured and exosomes secreted by keratinocytes and fibroblasts were harvested from the culture supernatants by ultracentrifugation. Each exosome fraction was divided into two parts; one part was subjected to high-throughput sequencing using an Illumina HiSeq sequencer to characterize the microRNA expression profiles, while the other part was labeled with the fluorescent dye PKH67 and was then co-cultivated with epidermal melanocytes. RESULTS High-throughput sequencing analysis showed 168 differentially expressed microRNA within exosomes derived from keratinocytes and from fibroblasts, 97 of those being up-regulated with the other 71 down-regulated. Gene ontology analysis showed that the target genes responsible for these differentially expressed microRNAs were mainly enriched in the protein-binding region of molecular functions. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis showed that target genes regulated by differentially expressed microRNA were mainly involved in mitogen-activated protein kinase (MAPK) signaling pathway, Ras signaling pathway, cAMP signaling pathway and Wnt signaling pathway. Keratinocyte-derived exosomes were taken up by melanocytes co-cultured with them and promoted the proliferation, tyrosinase activity and melanin synthesis of those melanocytes. However, fibroblast-derived exosomes had no similar effects on melanocytes. CONCLUSION Keratinocyte-derived exosomes but not fibroblast-derived exosomes were taken up by melanocytes in co-culture and significantly stimulated their proliferation, tyrosinase activity and melanin synthesis. Those different effects may be mainly due to the differential expression of microRNAs in exosomes derived from the different types of cells. LIMITATIONS Electron microscopy of the obtained exosomes and in-depth study of apparently differentially expressed microRNAs were not performed.
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Affiliation(s)
- Hai-Xia Shi
- Department of Dermatology, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Ru-Zhi Zhang
- Department of Dermatology, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Li Xiao
- Department of Dermatology, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Li Wang
- Department of Dermatology, The First Affiliated Hospital of Bengbu Medical College, Anhui, China
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Kim OK, Kim D, Lee M, Park SH, Yamada W, Eun S, Lee J. Standardized Edible Bird's Nest Extract Prevents UVB Irradiation-Mediated Oxidative Stress and Photoaging in the Skin. Antioxidants (Basel) 2021; 10:antiox10091452. [PMID: 34573084 PMCID: PMC8470287 DOI: 10.3390/antiox10091452] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 09/06/2021] [Accepted: 09/08/2021] [Indexed: 12/12/2022] Open
Abstract
We investigated whether standardized edible bird’s nest extract (BNE-PK) can prevent ultraviolet B (UVB) irradiation-mediated oxidative stress and photoaging in the skin using in vitro and in vivo models. BNE-PK increased skin hydration by hyaluronic acid synthesis and activation of ceramide synthase in UVB-irradiated hairless mice and HaCaT cells. Furthermore, BNE-PK suppressed melanogenesis by down-regulation of the cAMP/PKA/CREB/MITF/TRP-1/TRP-2/tyrosinase pathway in UVB-irradiated hairless mice and 3-isobutyl-1-methylxanthine (IBMX)-treated B16F10 cells. In UVB-irradiated hairless mice, BNE-PK attenuated the wrinkle formation-related JNK/c-FOS/c-Jun/MMP pathway and activated the TGF-βRI/SMAD3/pro-collagen type I pathway during UVB-mediated oxidative stress. Based on these findings, our data suggest that BNE-PK may potentially be used for the development of effective natural anti-photoaging functional foods for skin health.
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Affiliation(s)
- Ok-Kyung Kim
- Division of Food and Nutrition and Human Ecology Research Institute, Chonnam National University, Gwangju 61186, Korea;
| | - Dakyung Kim
- Department of Medical Nutrition, Kyung Hee University, Yongin 17104, Korea; (D.K.); (M.L.); (S.-H.P.)
| | - Minhee Lee
- Department of Medical Nutrition, Kyung Hee University, Yongin 17104, Korea; (D.K.); (M.L.); (S.-H.P.)
| | - Seong-Hoo Park
- Department of Medical Nutrition, Kyung Hee University, Yongin 17104, Korea; (D.K.); (M.L.); (S.-H.P.)
| | - Wakana Yamada
- Oryza Oil & Fat Chemical Co., Ltd., Ichinomiya 493-8001, Japan;
| | - Sangwon Eun
- R&D Division, Daehan Chemtech Co. Ltd., Seoul 01811, Korea;
| | - Jeongmin Lee
- Department of Medical Nutrition, Kyung Hee University, Yongin 17104, Korea; (D.K.); (M.L.); (S.-H.P.)
- Research Institute of Clinical Nutrition, Kyung Hee University, Seoul 02447, Korea
- Correspondence: ; Tel.: +82-31-201-3838; Fax: +82-31-204-8119
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Synergistic Effect of 300 μm Needle-Depth Fractional Microneedling Radiofrequency on the Treatment of Senescence-Induced Aging Hyperpigmentation of the Skin. Int J Mol Sci 2021; 22:ijms22147480. [PMID: 34299100 PMCID: PMC8305123 DOI: 10.3390/ijms22147480] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 07/07/2021] [Accepted: 07/08/2021] [Indexed: 01/08/2023] Open
Abstract
Aging-associated dermatological pigmentary diseases are associated with accumulation of senescence cells and the disruption of basement membrane due to chronic ultraviolet radiation (UVR) exposure. Our study is on the synergistic effect of the novel 300 μm needle-depth fractional microneedling radiofrequency (FMR) treatment and conventional Q-switched ND:YAG laser on aging-associated hyperpigmentation of the skin. The prospective controlled clinical trial of 25 Asian women revealed significantly higher improvements not only on wrinkles, but also on hyperpigmentation. Additional ex vivo study revealed significant reduction of pro-melanogenic markers as well as senescent keratinocytes, while increased expression of collagen type IV on the epidermal basement membrane, after additional FMR treatment on UV-irradiated human tissues. These results demonstrate that 300 μm needle-depth FMR might effectively remove senescent keratinocytes that secrete pro-melanogenic markers, and repair disrupted basement membrane, therefore preventing constant hyperpigmentation of the aged skin.
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36
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Development of Pigmentation-Regulating Agents by Drug Repositioning. Int J Mol Sci 2021; 22:ijms22083894. [PMID: 33918792 PMCID: PMC8069425 DOI: 10.3390/ijms22083894] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/06/2021] [Accepted: 04/07/2021] [Indexed: 01/10/2023] Open
Abstract
Skin color is determined by the processes of melanin synthesis and distribution. Problems in various molecules or signaling pathways involved in melanin synthesis contribute to skin pigmentation defects. Several trials have been conducted on the production of pigmentation-regulating agents, and drug repositioning has emerged as a modern technique to identify new uses for existing drugs. Our research team has researched substances or drugs associated with pigmentation control and, as a result, nilotinib, sorafenib, and ICG-001 have been found to promote pigmentation, while 5-iodotubercidin inhibits pigmentation. Therefore, these substances or medications were suggested as potential therapeutics for pigmentation disorders by drug repositioning.
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Zhao YJ, Xiao J, Huangyang MD, Zhao R, Wang Q, Zhang Y, Li JT. Transcriptome sequencing and analysis for the pigmentation of scale and skin in common carp (Cyprinus carpio). Mol Biol Rep 2021; 48:2399-2410. [PMID: 33742327 DOI: 10.1007/s11033-021-06273-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 03/09/2021] [Indexed: 11/27/2022]
Abstract
BACKGROUND Teleost scale not only provides a protective layer resisting penetration and pathogens but also participate in coloration. It is interesting to study the mechanism of teleost scale formation. Furthermore, whether there existed consensus genes between scale coloration and skin coloration has not been examined yet. METHODS AND RESULTS We analyzed the transcriptome profiles of red scale, white scale, red skin, and white skin of common carp (Cyprinus carpio). Pair-wise comparison identified 3391 differentially expressed genes (DEGs) between scale and skin, respectively. The 1765 up-regulated genes (UEGs) in scale, as the down-regulated genes in skin, preferred mineralization and other scale development-related processes. The 1626 skin UEGs were enriched in the morphogenesis of skin and appendages. We also identified 195 UEGs in white scale and 223 UEGs in red scale. The white scale UEGs primarily participated in regulation of growth and cell migration. The UEGs in red scale preferred pigment cell differentiation and retinoid metabolic process. A total of 22 DEGs had consensus expression patterns in skin and scale of the same coloration. The expression levels of these DEGs clearly grouped skin and scale of the same coloration together with principle component analysis and correlation analysis. Eleven consensus DEGs were homologous to the orthologs of Poropuntius huangchuchieni, 82% of which were under strong purifying selection. Eight processes including lipid storage and lipid catabolism were shared in both scale pigmentation and skin pigmentation. CONCLUSIONS We identified consensus DEGs and biological processes in scale and skin pigmentation. Our transcriptome analysis will contribute to further elucidation of mechanisms of teleost scale formation and coloration.
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Affiliation(s)
- Yu-Jie Zhao
- College of Fisheries and Life, Shanghai Ocean University, Shanghai, 201306, China
- Key Laboratory of Aquatic Genomics, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory of Fishery Biotechnology, Chinese Academy of Fishery Sciences, Beijing, 100141, China
| | - Jun Xiao
- College of Fisheries and Life, Shanghai Ocean University, Shanghai, 201306, China
- Key Laboratory of Aquatic Genomics, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory of Fishery Biotechnology, Chinese Academy of Fishery Sciences, Beijing, 100141, China
| | - Mei-Di Huangyang
- College of Fisheries and Life, Shanghai Ocean University, Shanghai, 201306, China
- Key Laboratory of Aquatic Genomics, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory of Fishery Biotechnology, Chinese Academy of Fishery Sciences, Beijing, 100141, China
| | - Ran Zhao
- Key Laboratory of Aquatic Genomics, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory of Fishery Biotechnology, Chinese Academy of Fishery Sciences, Beijing, 100141, China
| | - Qi Wang
- Key Laboratory of Aquatic Genomics, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory of Fishery Biotechnology, Chinese Academy of Fishery Sciences, Beijing, 100141, China
| | - Yan Zhang
- Key Laboratory of Aquatic Genomics, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory of Fishery Biotechnology, Chinese Academy of Fishery Sciences, Beijing, 100141, China
| | - Jiong-Tang Li
- Key Laboratory of Aquatic Genomics, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory of Fishery Biotechnology, Chinese Academy of Fishery Sciences, Beijing, 100141, China.
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38
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Suppression of Pax3-MITF-M Axis Protects from UVB-Induced Skin Pigmentation by Tetrahydroquinoline Carboxamide. Int J Mol Sci 2020; 21:ijms21249631. [PMID: 33348800 PMCID: PMC7766340 DOI: 10.3390/ijms21249631] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 12/12/2020] [Accepted: 12/15/2020] [Indexed: 01/13/2023] Open
Abstract
Paired box gene 3 (Pax3) and cAMP responsive element-binding protein (CREB) directly interact with the cis-acting elements on the promoter of microphthalmia-associated transcription factor isoform M (MITF-M) for transcriptional activation in the melanogenic process. Tyrosinase (Tyro) is a target gene of MITF-M, and functions as a key enzyme in melanin biosynthesis. Tetrahydroquinoline carboxamide (THQC) was previously screened as an antimelanogenic candidate. In the current study, we evaluated the antimelanogenic activity of THQC in vivo and elucidated a possible mechanism. Topical treatment with THQC mitigated ultraviolet B (UVB)-induced skin pigmentation in guinea pig with decreased messenger RNA (mRNA) and protein levels of melanogenic genes such as MITF-M and Tyro. Moreover, THQC inhibited cAMP-induced melanin production in α-melanocyte-stimulating hormone (α-MSH)- or histamine-activated B16-F0 cells, in which it suppressed the expression of the MITF-M gene at the promoter level. As a mechanism, THQC normalized the protein levels of Pax3, a transcriptional activator of the MITF-M gene, in UVB-exposed and pigmented skin, as well as in α-MSH-activated B16-F0 culture. However, THQC did not affect UVB- or α-MSH-induced phosphorylation (activation) of CREB. The results suggest that suppression of the Pax3–MITF-M axis might be a potential strategy in the treatment of skin pigmentary disorders that are at high risk under UVB radiation.
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Woo YR, Jung Y, Jeong SW, Park HJ. Paracrine roles of hormone receptors in Riehl's melanosis: A quantitative analysis of oestrogen and progesterone receptor expression patterns. Exp Dermatol 2020; 30:396-401. [PMID: 33141431 DOI: 10.1111/exd.14233] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 09/29/2020] [Accepted: 10/07/2020] [Indexed: 01/18/2023]
Abstract
The incidence of Riehl's melanosis (RM) is most common in the fifth or sixth decade of life with a female preponderance. As the skin is regarded a non-reproductive organ on which sex steroid hormones act, a possible relationship between the pathogenesis of RM and sex steroid hormone receptors can be inferred. This study intended to evaluate the expression profile of oestrogen receptor (ER)β and progesterone receptor (PR) in RM. Twelve lesional and perilesional normal-appearing skin samples of RM patients and the skin of 12 healthy controls were retrieved for the analysis. Real-time PCR analysis and immunohistochemical studies were conducted for ERβ and PR, respectively. The lesional and perilesional normal-appearing skin of 12 patients with RM and the skin of 12 healthy controls were retrieved for the analysis. Interestingly, the dermal ERβ immunostaining intensity was increased more in lesional skin than in perilesional skin. When compared to healthy controls, increased expression of ERβ and PR mRNAs was observed in the lesional skin of patients with RM. Of note, epidermal and dermal ERβ and dermal PR expressions showed increased staining intensities in the lesional skin of RM patients compared with healthy controls. The altered expression of ERβ and PR in RM supports the possible role of these hormone receptors in the pathogenesis of RM.
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Affiliation(s)
- Yu Ri Woo
- Department of Dermatology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Yujin Jung
- Department of Dermatology, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Seo Won Jeong
- Institute of Clinical Medical Research, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hyun Jeong Park
- Department of Dermatology, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
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40
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Atallah C, Charcosset C, Greige-Gerges H. Challenges for cysteamine stabilization, quantification, and biological effects improvement. J Pharm Anal 2020; 10:499-516. [PMID: 33425447 PMCID: PMC7775854 DOI: 10.1016/j.jpha.2020.03.007] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 03/16/2020] [Accepted: 03/18/2020] [Indexed: 12/26/2022] Open
Abstract
The aminothiol cysteamine, derived from coenzyme A degradation in mammalian cells, presents several biological applications. However, the bitter taste and sickening odor, chemical instability, hygroscopicity, and poor pharmacokinetic profile of cysteamine limit its efficacy. The use of encapsulation systems is a good methodology to overcome these undesirable properties and improve the pharmacokinetic behavior of cysteamine. Besides, the conjugation of cysteamine to the surface of nanoparticles is generally proposed to improve the intra-oral delivery of cyclodextrin-drug inclusion complexes, as well as to enhance the colorimetric detection of compounds by a gold nanoparticle aggregation method. On the other hand, the detection and quantification of cysteamine is a challenging mission due to the lack of a chromophore in its structure and its susceptibility to oxidation before or during the analysis. Derivatization agents are therefore applied for the quantification of this molecule. To our knowledge, the derivatization techniques and the encapsulation systems used for cysteamine delivery were not reviewed previously. Thus, this review aims to compile all the data on these methods as well as to provide an overview of the various biological applications of cysteamine focusing on its skin application.
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Affiliation(s)
- Carla Atallah
- Bioactive Molecules Research Laboratory, Doctoral School of Sciences and Technologies, Faculty of Sciences, Lebanese University, Lebanon
- Laboratory of Automatic Control, Chemical and Pharmaceutical Engineering, Claude Bernard Lyon 1 University, France
| | - Catherine Charcosset
- Laboratory of Automatic Control, Chemical and Pharmaceutical Engineering, Claude Bernard Lyon 1 University, France
| | - Hélène Greige-Gerges
- Bioactive Molecules Research Laboratory, Doctoral School of Sciences and Technologies, Faculty of Sciences, Lebanese University, Lebanon
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41
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Catanzaro E, Bishayee A, Fimognari C. On a Beam of Light: Photoprotective Activities of the Marine Carotenoids Astaxanthin and Fucoxanthin in Suppression of Inflammation and Cancer. Mar Drugs 2020; 18:E544. [PMID: 33143013 PMCID: PMC7692561 DOI: 10.3390/md18110544] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 10/25/2020] [Accepted: 10/29/2020] [Indexed: 12/14/2022] Open
Abstract
Every day, we come into contact with ultraviolet radiation (UVR). If under medical supervision, small amounts of UVR could be beneficial, the detrimental and hazardous effects of UVR exposure dictate an unbalance towards the risks on the risk-benefit ratio. Acute and chronic effects of ultraviolet-A and ultraviolet-B involve mainly the skin, the immune system, and the eyes. Photodamage is an umbrella term that includes general phototoxicity, photoaging, and cancer caused by UVR. All these phenomena are mediated by direct or indirect oxidative stress and inflammation and are strictly connected one to the other. Astaxanthin (ASX) and fucoxanthin (FX) are peculiar marine carotenoids characterized by outstanding antioxidant properties. In particular, ASX showed exceptional efficacy in counteracting all categories of photodamages, in vitro and in vivo, thanks to both antioxidant potential and activation of alternative pathways. Less evidence has been produced about FX, but it still represents an interesting promise to prevent the detrimental effect of UVR. Altogether, these results highlight the importance of digging into the marine ecosystem to look for new compounds that could be beneficial for human health and confirm that the marine environment is as much as full of active compounds as the terrestrial one, it just needs to be more explored.
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Affiliation(s)
- Elena Catanzaro
- Department for Life Quality Studies, Alma Mater Studiorum—Università di Bologna, corso d’Augusto 237, 47921 Rimini, Italy;
| | - Anupam Bishayee
- Lake Erie College of Osteopathic Medicine, Bradenton, FL 34211, USA
| | - Carmela Fimognari
- Department for Life Quality Studies, Alma Mater Studiorum—Università di Bologna, corso d’Augusto 237, 47921 Rimini, Italy;
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42
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Scarcella G, Gerber PA, Edge D, Nielsen MCE. Effective removal of solar lentigines by combination of pre- And post-fluorescent light energy treatment with picosecond laser treatment. Clin Case Rep 2020; 8:1429-1432. [PMID: 32884768 PMCID: PMC7455422 DOI: 10.1002/ccr3.2839] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 02/22/2020] [Accepted: 03/20/2020] [Indexed: 01/02/2023] Open
Abstract
We present a novel treatment for removal of SL that is efficient and enables removal or lesions not immediately visible. Kleresca® FLE technology combined with picosecond laser treatment removes SL lesions and improves skin quality and appearance.
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Affiliation(s)
| | - Peter Arne Gerber
- Department of DermatologyMedical FacultyHeinrich‐Heine University, & Dermatologie am LuegplatzDüsseldorfGermany
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Kapoor R, Dhatwalia S, Kumar R, Rani S, Parsad D. Emerging role of dermal compartment in skin pigmentation: comprehensive review. J Eur Acad Dermatol Venereol 2020; 34:2757-2765. [DOI: 10.1111/jdv.16404] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Accepted: 03/03/2020] [Indexed: 12/16/2022]
Affiliation(s)
- R. Kapoor
- Department of Zoology Panjab University Chandigarh Chandigarh India
| | - S.K. Dhatwalia
- Department of Zoology Panjab University Chandigarh Chandigarh India
| | - R. Kumar
- Department of Zoology Panjab University Chandigarh Chandigarh India
| | - S. Rani
- Department of Zoology Panjab University Chandigarh Chandigarh India
| | - D. Parsad
- Department of Dermatology PGIMER Chandigarh India
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Kim KI, Jung KE, Shin YB, Kim CD, Yoon TJ. Sorafenib induces pigmentation via the regulation of β-catenin signalling pathway in melanoma cells. Exp Dermatol 2020; 31:57-63. [PMID: 32391926 DOI: 10.1111/exd.14112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 05/04/2020] [Accepted: 05/04/2020] [Indexed: 01/23/2023]
Abstract
We conducted large-scale screening test on drugs that were already approved for other diseases to find pigmentation-modulating agents. Among drugs with potential for pigmentation control, we selected sorafenib and further investigated the effect on pigmentation using HM3KO melanoma cells. As a result of treating melanoma cells with sorafenib, pigmentation was promoted in terms of melanin content and tyrosinase activity. Sorafenib increased mRNA and protein levels of pigmentation-related genes such as MITF, tyrosinase and TRP1. To uncover the action mechanism, we investigated the effect of sorafenib on the intracellular signalling pathways. Sorafenib reduced phosphorylation of AKT and ERK, suggesting that sorafenib induces pigmentation through inhibition of the AKT and ERK pathways. In addition, sorafenib significantly increased the level of active β-catenin, together with activation of β-catenin signalling. Mechanistic study revealed that sorafenib decreased phosphorylation of serine 9 (S9) of GSK3β, while it increased phosphorylation of tyrosine 216 (Y216) of GSK3β. These results suggest that sorafenib activates the β-catenin signalling through the regulation of GSK3β phosphorylation, thereby affecting the pigmentation process.
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Affiliation(s)
- Kyung-Il Kim
- Department of Dermatology, School of Medicine, Chungnam National University, Daejeon, Korea.,Department of Medical Science, School of Medicine, Chungnam National University, Daejeon, Korea.,Department of Dermatology and Institute of Health Sciences, School of Medicine, Gyeongsang National University & Hospital, Jinju, Korea
| | - Kyung Eun Jung
- Department of Dermatology, School of Medicine, Chungnam National University, Daejeon, Korea
| | - Young-Bin Shin
- Department of Dermatology and Institute of Health Sciences, School of Medicine, Gyeongsang National University & Hospital, Jinju, Korea
| | - Chang-Deok Kim
- Department of Dermatology, School of Medicine, Chungnam National University, Daejeon, Korea.,Department of Medical Science, School of Medicine, Chungnam National University, Daejeon, Korea
| | - Tae-Jin Yoon
- Department of Dermatology and Institute of Health Sciences, School of Medicine, Gyeongsang National University & Hospital, Jinju, Korea
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Liu Z, Jiang M, Zhao J, Wang Q, Zhang C, Gao M, Gu M, Xiang L. Efficacy of a wound-dressing biomaterial on prevention of postinflammatory hyperpigmentation after suction blister epidermal grafting in stable vitiligo patients: a controlled assessor-blinded clinical study with in vitro bioactivity investigation. Arch Dermatol Res 2020; 312:635-645. [PMID: 32107629 DOI: 10.1007/s00403-020-02049-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 02/03/2020] [Accepted: 02/12/2020] [Indexed: 12/30/2022]
Abstract
Postinflammatory hyperpigmentation (PIH) is a common disfiguring complication following inflammatory dermatoses and cosmetic procedures in dark-skinned individuals. Anti-inflammatory and repairing agents targeting primary inflammation and injury are becoming promising choices for preventing PIH. The aim of this active-controlled, assessor-blinded, intra-individual monocentric study was to evaluate the preventive effect of a wound-dressing biomaterial, mussel adhesive protein (MAP) in the suction blister-induced PIH model. Twenty Chinese patients underwent suction blister epidermal grafting had defined wound areas to receive a topical MAP spray or a potent corticosteroid cream once daily for seven consecutive days after operation. In situ semi-quantitative evaluations of inflammation and pigmentation were achieved by Mexameter, reflectance confocal microscopy and dermoscopy on week 1, week 4, and week 12. Topical application of MAP exerted remarkably inhibitory effect on PIH comparable to fluticasone propionate, manifested as significantly lower melanin index and papillary contrast measured by Mexameter and confocal microscopy on week 12 compared to untreated sites. Although MAP exhibited moderate anti-inflammatory effect weaker than fluticasone propionate, MAP-treated sites healed faster than steroid-treated and untreated sites. The biological activity of MAP was further studied in UVB-irradiated HaCaT cell model, which revealed MAP decreased the expression of UVB-induced α-melanocyte stimulating hormone (α-MSH) and pro-inflammatory cytokines (IL-1α, IL-6, COX-2). It also protected HaCaT cells from UVB-induced cell death and apoptosis. In conclusion, MAP could be a novel postoperational wound dressing preventing PIH associated with skin inflammation and injury.
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Affiliation(s)
- Ziqi Liu
- Department of Dermatology, Huashan Hospital, Fudan University, No. 12th Middle Wulumuqi Road, Shanghai, 200040, China
| | - Min Jiang
- Department of Dermatology, Huashan Hospital, Fudan University, No. 12th Middle Wulumuqi Road, Shanghai, 200040, China
| | - Juemin Zhao
- Department of Dermatology, Huashan Hospital, Fudan University, No. 12th Middle Wulumuqi Road, Shanghai, 200040, China
| | - Qianqian Wang
- Department of Dermatology, Huashan Hospital, Fudan University, No. 12th Middle Wulumuqi Road, Shanghai, 200040, China
| | - Chengfeng Zhang
- Department of Dermatology, Huashan Hospital, Fudan University, No. 12th Middle Wulumuqi Road, Shanghai, 200040, China
| | - Min Gao
- USUN Biochemical Technology Co., Ltd., Jiangyin, China
| | - Ming Gu
- USUN Biochemical Technology Co., Ltd., Jiangyin, China
| | - Leihong Xiang
- Department of Dermatology, Huashan Hospital, Fudan University, No. 12th Middle Wulumuqi Road, Shanghai, 200040, China.
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Yun CY, Roh E, Kim SH, Han J, Lee J, Jung DE, Kim GH, Jung SH, Cho WJ, Han SB, Kim Y. Stem Cell Factor-Inducible MITF-M Expression in Therapeutics for Acquired Skin Hyperpigmentation. Am J Cancer Res 2020; 10:340-352. [PMID: 31903124 PMCID: PMC6929618 DOI: 10.7150/thno.39066] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 09/04/2019] [Indexed: 01/17/2023] Open
Abstract
Rationale: Microphthalmia-associated transcription factor M (MITF-M) plays important roles in the pigment production, differentiation and survival of melanocytes. Stem cell factor (SCF) and its receptor KIT stimulate MITF-M activity via phosphorylation at the post-translation level. However, the phosphorylation shortens half-life of MITF-M protein over the course of minutes. Here, we investigated novel hypotheses of (i) whether SCF/KIT can regulate MITF-M activity through gene expression as the alternative process, and (ii) whether chemical inhibition of KIT activity can mitigate the acquired pigmentation in skin by targeting the expression of MITF-M. Methods: We employed melanocyte cultures in vitro and pigmented skin samples in vivo, and applied immunoblotting, RT-PCR, siRNA-based gene knockdown and confocal microscopy. Results: The protein and mRNA levels of MITF-M in epidermal melanocytes and the promoter activity of MITF-M in B16-F0 melanoma cells demonstrated that SCF/KIT could trigger the expression of MITF-M de novo, following the phosphorylation-dependent proteolysis of pre-existing MITF-M protein. SCF/KIT regulated the transcription abilities of cAMP-responsive element-binding protein (CREB), CREB-regulated co-activator 1 (CRTC1) and SRY-related HMG-box 10 (SOX10) but not β-catenin at the MITF-M promoter. Meanwhile, chemical inhibition of KIT activity abolished SCF-induced melanin production in epidermal melanocyte cultures, as well as protected the skin from UV-B-induced hyperpigmentation in HRM2 mice or brownish guinea pigs, in which it down-regulated the expression of MITF-M de novo at the promoter level. Conclusion: We propose the targeting of SCF/KIT-inducible MITF-M expression as a strategy in the therapeutics for acquired pigmentary disorders.
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Škalamera D, Stevenson AJ, Ehmann A, Ainger SA, Lanagan C, Sturm RA, Gabrielli B. Melanoma mutations modify melanocyte dynamics in co-culture with keratinocytes or fibroblasts. J Cell Sci 2019; 132:jcs.234716. [PMID: 31767623 DOI: 10.1242/jcs.234716] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 11/21/2019] [Indexed: 12/25/2022] Open
Abstract
Melanocytic cell interactions are integral to skin homeostasis, and affect the outcome of multiple diseases, including cutaneous pigmentation disorders and melanoma. By using automated-microscopy and machine-learning-assisted morphology analysis of primary human melanocytes in co-culture, we performed combinatorial interrogation of melanocyte genotypic variants and functional assessment of lentivirus-introduced mutations. Keratinocyte-induced melanocyte dendricity, an indicator of melanocyte differentiation, was reduced in the melanocortin 1 receptor (MC1R) R/R variant strain and by NRAS.Q61K and BRAF.V600E expression, while expression of CDK4.R24C and RAC1.P29S had no detectable effect. Time-lapse tracking of melanocytes in co-culture revealed dynamic interaction phenotypes and hyper-motile cell states that indicated that, in addition to the known role in activating mitogenic signalling, MEK-pathway-activating mutations may also allow melanocytes to escape keratinocyte control and increase their invasive potential. Expanding this combinatorial platform will identify other therapeutic target mutations and melanocyte genetic variants, as well as increase understanding of skin cell interactions.
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Affiliation(s)
- Dubravka Škalamera
- Mater Research Institute, University of Queensland, Translational Research Institute, Brisbane, 4102 QLD, Australia
| | - Alexander J Stevenson
- Mater Research Institute, University of Queensland, Translational Research Institute, Brisbane, 4102 QLD, Australia
| | - Anna Ehmann
- Mater Research Institute, University of Queensland, Translational Research Institute, Brisbane, 4102 QLD, Australia
| | - Stephen A Ainger
- Dermatology Research Centre, The University of Queensland Diamantina Institute, Translational Research Institute, Brisbane, 4102 QLD, Australia
| | - Catherine Lanagan
- Mater Research Institute, University of Queensland, Translational Research Institute, Brisbane, 4102 QLD, Australia
| | - Richard A Sturm
- Dermatology Research Centre, The University of Queensland Diamantina Institute, Translational Research Institute, Brisbane, 4102 QLD, Australia
| | - Brian Gabrielli
- Mater Research Institute, University of Queensland, Translational Research Institute, Brisbane, 4102 QLD, Australia
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Polydeoxyribonucleotide Activates Mitochondrial Biogenesis but Reduces MMP-1 Activity and Melanin Biosynthesis in Cultured Skin Cells. Appl Biochem Biotechnol 2019; 191:540-554. [PMID: 31811642 DOI: 10.1007/s12010-019-03171-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Accepted: 10/23/2019] [Indexed: 12/15/2022]
Abstract
The regulation of mitochondrial biogenesis, melanogenesis, and connective tissue proteins is critical for homeostasis and aging skin cells. We examined the biological effects of polydeoxyribonucleotide (PDRN) on mitochondrial biogenesis, melanogenesis, and connective tissue proteins in vitro. In a radical scavenging assay, PDRN showed antioxidant activities in a dose-dependent manner, and those activities can suppress cellular oxidative stress in skin cells. PDRN directly inhibited mushroom tyrosinase activity and cellular tyrosinase activity, thus significantly reducing the cellular melanin content in B16-F10 melanocytes. The mRNA and protein expressions of the microphthalmia-associated transcription factor (MITF), which is a key melanogenic gene transcription factor, were significantly downregulated by PDRN. Accordingly, tyrosinase-related protein 1, dopachrome tautomerase, and tyrosinase, which gene expressions were regulated by MITF, were significantly downregulated by PDRN. Mitotracker-probed mitochondria image analysis suggested that PDRN enhanced mitochondrial density in both murine melanoma cells and in human skin fibroblast cells. In addition, PDRN strongly suppressed in vitro elastase enzyme activity in a dose-dependent manner and inhibited matrix metalloproteinase-1 gene expression in human skin fibroblast cells. Collectively, these findings indicate that PDRN has multiple beneficial biological activities in skin cells: hypopigmentation, induction of mitochondrial biogenesis, and the inhibition of collective tissue proteins.
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Standardization of organoid culture for evaluation of melanogenesis induced by UVB, UVA and visible light. An Bras Dermatol 2019; 95:46-51. [PMID: 31901368 PMCID: PMC7058865 DOI: 10.1016/j.abd.2019.06.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 06/13/2019] [Indexed: 11/21/2022] Open
Abstract
Background Organoid cultures are primary cultures that maintain architectural characteristics and the relationships between cells, as well as the extracellular matrix. They are alternatives for pathophysiological or therapeutic investigation rather than animal and in vitro tests. Objective Development of a cutaneous organoid culture model, aiming at the study of radiation-induced melanogenesis. Method A validation study, which involved biopsies of the skin of the back of the adult ear. One sample was irradiated with different doses of UVB, UVA, or visible light (VL); the other was maintained in the dark for 72 h. The viability of the tissues was evaluated from the morphological and architectural parameters of the histology, and the expression of the glyceraldehyde-3-phosphate dehydrogenase (GAPDH) gene, by real-time polymerase chain reaction (PCR). The radiation-induced melanin pigmentation was standardized according to the doses of each radiation and evaluated by digital image analysis (Fontana-Masson). Results The primary skin culture was standardized at room temperature using DMEM medium. The doses of UVB, UVA, and VL (blue light) that induced differential melanogenesis were: 166 mJ/cm2, 1.524 J/cm2, and 40 J/cm2. The expression of the GAPHD constitutional gene did not differ between the sample of skin processed immediately after tissue collection and the sample cultured for 72 h in the standardized protocol. Study limitations This was a preliminary study that evaluated only the viability and integrity of the melanogenic system, and the effect of the radiation alone. Conclusions The standardized model maintained viable melanocytic function for 72 h at room temperature, allowing the investigation of melanogenesis induced by different forms of radiation.
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Sun CK, Liu WM, Liao YH. Study on melanin enhanced third harmonic generation in a live cell model. BIOMEDICAL OPTICS EXPRESS 2019; 10:5716-5723. [PMID: 31799042 PMCID: PMC6865104 DOI: 10.1364/boe.10.005716] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 09/20/2019] [Accepted: 10/04/2019] [Indexed: 05/08/2023]
Abstract
Melanin dominates the endogenous contrasts of in vivo third harmonic generation (THG) imaging of human skin. A recent study investigated the THG in melanin solution and a linear relationship between melanin concentration and THG intensity was reported, in contrast to the expected nonlinear relationship. Since melanin hydrocolloid solution is very different from the skin tissue, here we report our study on the origin of the melanin-enhanced THG by using a live cell model. Different from the previous conclusion, our live cell study has indicated an initial nonlinear process where the THG intensity was enhanced according to the 3.5th power of melanin mass density (MMD). When the MMD is higher than 11 mg/ml, a transition from the resonance-enhanced THG to the high-order hyper-Rayleigh scattering process occurs. This saturation phenomenon of the virtual-transition-based THG nonlinear process is attributed to the multi-melanosome-induced scattering within the sub-femtoliter focal volume.
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Affiliation(s)
- Chi-Kuang Sun
- Department of Electrical Engineering and Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei 10617, Taiwan
- Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei 10617, Taiwan
| | - Wei-Min Liu
- Department of Electrical Engineering and Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei 10617, Taiwan
| | - Yi-Hua Liao
- Department of Dermatology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei 10002, Taiwan
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