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Wu Y, Wang X, Zhang J, Du S, Wang Z, Li J, Zhang W, Xiang J, Li R, Liu J, Bi X. Capsaicin combined with stem cells improved mitochondrial dysfunction in PIG3V cells, an immortalized human vitiligo melanocyte cell line, by inhibiting the HSP70/TLR4/mTOR/FAK signaling axis. Mol Biol Rep 2024; 51:650. [PMID: 38734811 DOI: 10.1007/s11033-024-09592-5] [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: 02/29/2024] [Accepted: 04/29/2024] [Indexed: 05/13/2024]
Abstract
BACKGROUND Vitiligo is a common autoimmune skin disease. Capsaicin has been found to exert a positive effect on vitiligo treatment, and mesenchymal stem cells (MSCs) are also confirmed to be an ideal cell type. This study aimed to explore the influence of capsaicin combined with stem cells on the treatment of vitiligo and to confirm the molecular mechanism of capsaicin combined with stem cells in treating vitiligo. METHODS AND RESULTS PIG3V cell proliferation and apoptosis were detected using CCK-8 and TUNEL assays, MitoSOX Red fluorescence staining was used to measure the mitochondrial ROS level, and JC-1 staining was used to detect the mitochondrial membrane potential. The expression of related genes and proteins was detected using RT‒qPCR and Western blotting. Coimmunoprecipitation was used to analyze the protein interactions between HSP70 and TLR4 or between TLR4 and mTOR. The results showed higher expression of HSP70 in PIG3V cells than in PIG1 cells. The overexpression of HSP70 reduced the proliferation of PIG3V cells, promoted apoptosis, and aggravated mitochondrial dysfunction and autophagy abnormalities. The expression of HSP70 could be inhibited by capsaicin combined with MSCs, which increased the levels of Tyr, Tyrp1 and DCT, promoted the proliferation of PIG3V cells, inhibited apoptosis, activated autophagy, and improved mitochondrial dysfunction. In addition, capsaicin combined with MSCs regulated the expression of TLR4 through HSP70 and subsequently affected the mTOR/FAK signaling pathway CONCLUSIONS: Capsaicin combined with MSCs inhibits TLR4 through HSP70, and the mTOR/FAK signaling pathway is inhibited to alleviate mitochondrial dysfunction and autophagy abnormalities in PIG3V cells.
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Affiliation(s)
- Yifei Wu
- Department of Dermatology, The First People's Hospital of Yunnan Province, No. 157 Jinbi Road, Kunming, Yunnan, 650032, China
| | - Xiaochuan Wang
- Department of Dermatology, The First People's Hospital of Yunnan Province, No. 157 Jinbi Road, Kunming, Yunnan, 650032, China
| | - Jiayu Zhang
- Department of Dermatology, The First People's Hospital of Yunnan Province, No. 157 Jinbi Road, Kunming, Yunnan, 650032, China
| | - Sha Du
- Department of Laboratory, The First People's Hospital of Yunnan Province, Kunming, Yunnan, 650032, China
| | - Zhiqiong Wang
- Department of Dermatology, The First People's Hospital of Yunnan Province, No. 157 Jinbi Road, Kunming, Yunnan, 650032, China
| | - Jinrong Li
- Department of Dermatology, Traditional Chinese Medicine Hospital of Jinggu County, Pu'er, Yunnan, 666400, China
| | - Wenhe Zhang
- Department of Dermatology, The First People's Hospital of Yunnan Province, No. 157 Jinbi Road, Kunming, Yunnan, 650032, China
| | - Jie Xiang
- Department of Dermatology, The First People's Hospital of Yunnan Province, No. 157 Jinbi Road, Kunming, Yunnan, 650032, China
| | - Renfu Li
- Department of Dermatology, The First People's Hospital of Yunnan Province, No. 157 Jinbi Road, Kunming, Yunnan, 650032, China
| | - Jing Liu
- Department of Dermatology, The First People's Hospital of Yunnan Province, No. 157 Jinbi Road, Kunming, Yunnan, 650032, China
| | - Xin Bi
- Department of Dermatology, The First People's Hospital of Yunnan Province, No. 157 Jinbi Road, Kunming, Yunnan, 650032, China.
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Lin Y, Wu X, Yang Y, Wu Y, Xiang L, Zhang C. The multifaceted role of autophagy in skin autoimmune disorders: a guardian or culprit? Front Immunol 2024; 15:1343987. [PMID: 38690268 PMCID: PMC11058840 DOI: 10.3389/fimmu.2024.1343987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 04/01/2024] [Indexed: 05/02/2024] Open
Abstract
Autophagy is a cellular process that functions to maintain intracellular homeostasis via the degradation and recycling of defective organelles or damaged proteins. This dynamic mechanism participates in various biological processes, such as the regulation of cellular differentiation, proliferation, survival, and the modulation of inflammation and immune responses. Recent evidence has demonstrated the involvement of polymorphisms in autophagy-related genes in various skin autoimmune diseases. In addition, autophagy, along with autophagy-related proteins, also contributes to homeostasis maintenance and immune regulation in the skin, which is associated with skin autoimmune disorders. This review aims to provide an overview of the multifaceted role of autophagy in skin autoimmune diseases and shed light on the potential of autophagy-targeting therapeutic strategies in dermatology.
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Affiliation(s)
| | | | | | | | | | - Chengfeng Zhang
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, China
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Yang R, Deng F, Yang Y, Tian Q, Huangfu S, Yang L, Hou J, Yang G, Pang W, Lu J, Liu H, Chen Y, Gao J, Zhang L. Blue light promotes vitamin C-mediated ferroptosis of melanoma through specifically upregulating transporter SVCT2 and generating Fe 2. Biomaterials 2023; 299:122186. [PMID: 37276798 DOI: 10.1016/j.biomaterials.2023.122186] [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: 05/18/2023] [Revised: 05/30/2023] [Accepted: 05/31/2023] [Indexed: 06/07/2023]
Abstract
Vitamin C (VC)-based cancer therapy is a promising therapeutic approach for a variety of cancers due to its profound effects on redox reactions and metabolic pathways. However, high administration dosage of VC for necessary therapeutic efficacy for cancers increases the risk of overt side effects and limits its clinical use. Here, we show cutaneous blue light irradiation can specifically upregulate the sodium-dependent vitamin C transporter 2 (SVCT2) of the tumor and increase effectively the VC concentration at the tumor sites by an overall low dosage administration. In the mouse melanoma model, blue light stimulates the SVCT2 expression through the nuclear factor-kappa B (NF-κB) signaling pathway both in vitro and in vivo. The increased cellular VC together with Fe2+ generated by blue light simultaneously elevate cellular oxidative stress and trigger the ferroptosis of melanoma. With this revealed mechanism, the synergistic actions of blue light on the VC transporter and Fe2+ generation lead to a ca. 20-fold reduction in the administration dosage of VC with an effective melanoma elimination and prolonged survival. The work defines the killing mechanism of blue light on VC-based cancer therapy and provides a practical approach for promoting VC uptake. This light-assisted VC therapy is not only highly efficient for melanoma but also considerable for a broad clinical utility.
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Affiliation(s)
- Rong Yang
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Fangqing Deng
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Yingchun Yang
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, China.
| | - Qing Tian
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Shuaiqi Huangfu
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Luqiu Yang
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Jing Hou
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Guanghao Yang
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Wei Pang
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Jueru Lu
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Hui Liu
- Analytical & Testing Center, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Yao Chen
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Jie Gao
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, China.
| | - Lianbing Zhang
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, China.
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Shining Light on Autophagy in Skin Pigmentation and Pigmentary Disorders. Cells 2022; 11:cells11192999. [PMID: 36230960 PMCID: PMC9563738 DOI: 10.3390/cells11192999] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/13/2022] [Accepted: 09/23/2022] [Indexed: 01/18/2023] Open
Abstract
Autophagy is a vital process for cell survival and it preserves homeostasis by recycling or disassembling unnecessary or dysfunctional cellular constituents. Autophagy ameliorates skin integrity, regulating epidermal differentiation and constitutive pigmentation. It induces melanogenesis and contributes to skin color through melanosome turnover. Autophagy activity is involved in skin phenotypic plasticity and cell function maintenance and, if altered, it concurs to the onset and/or progression of hypopigmentary and hyperpigmentary disorders. Overexpression of autophagy exerts a protective role against the intrinsic metabolic stress occurring in vitiligo skin, while its dysfunction has been linked to the tuberous sclerosis complex hypopigmentation. Again, autophagy impairment reduces melanosome degradation by concurring to pigment accumulation characterizing senile lentigo and melasma. Here we provide an updated review that describes recent findings on the crucial role of autophagy in skin pigmentation, thus revealing the complex interplay among melanocyte biology, skin environment and autophagy. Hence, targeting this process may also represent a promising strategy for treating pigmentary disorders.
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