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Liu Y, Ma TX, Fan PF, Wang Z, Wang Z, Li L. STAT3-induced lncRNA GNAS-AS1 accelerates keloid formation by mediating the miR-196a-5p/CXCL12/STAT3 axis in a feedback loop. Exp Dermatol 2024; 33:e15111. [PMID: 38840411 DOI: 10.1111/exd.15111] [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: 02/01/2024] [Revised: 04/16/2024] [Accepted: 04/28/2024] [Indexed: 06/07/2024]
Abstract
Keloids are pathological scar tissue resulting from skin trauma or spontaneous formation, often accompanied by itching and pain. Although GNAS antisense RNA 1 (GNAS-AS1) shows abnormal upregulation in keloids, the underlying molecular mechanism is unclear. The levels of genes and proteins in clinical tissues from patients with keloids and human keloid fibroblasts (HKFs) were measured using quantitative reverse transcription PCR, western blot and enzyme-linked immunosorbent assay. The features of HKFs, including proliferation and migration, were evaluated using cell counting kit 8 and a wound healing assay. The colocalization of GNAS-AS1 and miR-196a-5p in HKFs was measured using fluorescence in situ hybridization. The relationships among GNAS-AS1, miR-196a-5p and C-X-C motif chemokine ligand 12 (CXCL12) in samples from patients with keloids were analysed by Pearson correlation analysis. Gene interactions were validated by chromatin immunoprecipitation and luciferase reporter assays. GNAS-AS1 and CXCL12 expression were upregulated and miR-196a-5p expression was downregulated in clinical tissues from patients with keloids. GNAS-AS1 knockdown inhibited proliferation, migration, and extracellular matrix (ECM) accumulation of HKFs, all of which were reversed by miR-196a-5p downregulation. Signal transducer and activator of transcription 3 (STAT3) induced GNAS-AS1 transcription through GNAS-AS1 promoter interaction, and niclosamide, a STAT3 inhibitor, decreased GNAS-AS1 expression. GNAS-AS1 positively regulated CXCL12 by sponging miR-196-5p. Furthermore, CXCL12 knockdown restrained STAT3 phosphorylation in HKFs. Our findings revealed a feedback loop of STAT3/GNAS-AS1/miR-196a-5p/CXCL12/STAT3 that promoted HKF proliferation, migration and ECM accumulation and affected keloid progression.
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Affiliation(s)
- Yun Liu
- Department of Plastic and cosmetic Surgery, Hainan General Hospital (Hainan Affifiliated Hospital of Hainan Medical University), Haikou, Hainan, China
| | - Teng-Xiao Ma
- Department of Plastic and cosmetic Surgery, Hainan General Hospital (Hainan Affifiliated Hospital of Hainan Medical University), Haikou, Hainan, China
| | - Peng-Fei Fan
- Department of Plastic and cosmetic Surgery, Hainan General Hospital (Hainan Affifiliated Hospital of Hainan Medical University), Haikou, Hainan, China
| | - Ze Wang
- Hainan Medical University, Haikou, Hainan, China
| | - Zhe Wang
- Department of Plastic and cosmetic Surgery, Hainan General Hospital (Hainan Affifiliated Hospital of Hainan Medical University), Haikou, Hainan, China
| | - Lei Li
- Department of Plastic and cosmetic Surgery, Hainan General Hospital (Hainan Affifiliated Hospital of Hainan Medical University), Haikou, Hainan, China
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Lian SL, Lu YT, Lu YJ, Yao YL, Wang XL, Jiang RQ. Tumor-associated macrophages promoting PD-L1 expression in infiltrating B cells through the CXCL12/CXCR4 axis in human hepatocellular carcinoma. Am J Cancer Res 2024; 14:832-853. [PMID: 38455420 PMCID: PMC10915331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 02/04/2024] [Indexed: 03/09/2024] Open
Abstract
The inflammation-related tumor microenvironment (TME) is one of the major driving forces of hepatocarcinogenesis. We aimed to investigate cell-to-cell communication among Hepatocellular Carcinoma (HCC) through re-analyzing HCC single-cell RNA-seq data, and to confirm such cellular interaction through in vitro and in vivo study. We found a subset of Regulatory B cells with PD-L1 expression (PD-L1+ Bregs), mainly located in adjacent HCC tissues. In co-localization with PD-L1+ Bregs, a subset of Tumor Associated Macrophages with high expression of CXCL12 (CXCL12+ TAMs) was also mainly located in adjacent HCC tissues. Moreover, CXCL12+ TAMs can be stimulated in vitro using an HCC conditional medium. Using CellChat analysis and Multiplex Immunohistochemistry staining (mIHC), CXCL12+ TAMs were found to be first recruited by Cancer-Associated Fibroblasts (CAFs) through a CD74/macrophage migration inhibitory factor (MIF) pattern, and further differentiated into TGF-β-enriched tissues. Furthermore, CXCL12+ TAMs recruited PD-L1+ Bregs via the CXCL12/CXCR4 axis, and CXCR4 expression was significantly positively correlated to PD-L1 expression in PD-L1+ Bregs. At last, we confirmed the communications among CAFs, Macrophages and B cells and their tumor-promoting effects by using an orthotopic mouse model of HCC. Immunosuppressive HCC TME involving cell-to-cell communications comprised MIF-secreting CAFs, CXCL12-secreting TAMs, and PD-L1-producing Bregs, and their regulation could be promising therapeutic targets in future immunotherapy for human HCC.
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Affiliation(s)
- Sen-Lin Lian
- Medical School, Nanjing UniversityNanjing 210093, Jiangsu, The People’s Republic of China
| | - Yun-Tao Lu
- Medical School, Nanjing UniversityNanjing 210093, Jiangsu, The People’s Republic of China
| | - Yi-Jun Lu
- Medical School, Nanjing UniversityNanjing 210093, Jiangsu, The People’s Republic of China
| | - Yong-Liang Yao
- Department of Clinical Laboratory, Kunshan First People’s Hospital, Affiliated to Jiangsu UniversityKunshan 215300, Jiangsu, The People’s Republic of China
| | - Xiao-Lin Wang
- Department of Thoracic Surgery, Northern Jiangsu People’s Hospital and Clinical Medical College of Yangzhou UniversityYangzhou 225001, Jiangsu, The People’s Republic of China
| | - Run-Qiu Jiang
- Medical School, Nanjing UniversityNanjing 210093, Jiangsu, The People’s Republic of China
- State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing UniversityNanjing 210093, Jiangsu, The People’s Republic of China
- Jiangsu Laboratory of Molecular Medicine, Medical School, Nanjing UniversityNanjing 210093, Jiangsu, The People’s Republic of China
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Chen Z, Miao Y, Tan Z, Hu Q, Wu Y, Li X, Guo W, Gu J. scCancer2: data-driven in-depth annotations of the tumor microenvironment at single-level resolution. Bioinformatics 2024; 40:btae028. [PMID: 38243719 PMCID: PMC10868330 DOI: 10.1093/bioinformatics/btae028] [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: 09/27/2023] [Revised: 01/10/2024] [Accepted: 01/15/2024] [Indexed: 01/21/2024] Open
Abstract
SUMMARY Single-cell RNA-seq (scRNA-seq) is a powerful technique for decoding the complex cellular compositions in the tumor microenvironment (TME). As previous studies have defined many meaningful cell subtypes in several tumor types, there is a great need to computationally transfer these labels to new datasets. Also, different studies used different approaches or criteria to define the cell subtypes for the same major cell lineages. The relationships between the cell subtypes defined in different studies should be carefully evaluated. In this updated package scCancer2, designed for integrative tumor scRNA-seq data analysis, we developed a supervised machine learning framework to annotate TME cells with annotated cell subtypes from 15 scRNA-seq datasets with 594 samples in total. Based on the trained classifiers, we quantitatively constructed the similarity maps between the cell subtypes defined in different references by testing on all the 15 datasets. Secondly, to improve the identification of malignant cells, we designed a classifier by integrating large-scale pan-cancer TCGA bulk gene expression datasets and scRNA-seq datasets (10 cancer types, 175 samples, 663 857 cells). This classifier shows robust performances when no internal confidential reference cells are available. Thirdly, scCancer2 integrated a module to process the spatial transcriptomic data and analyze the spatial features of TME. AVAILABILITY AND IMPLEMENTATION The package and user documentation are available at http://lifeome.net/software/sccancer2/ and https://doi.org/10.5281/zenodo.10477296.
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Affiliation(s)
- Zeyu Chen
- MOE Key Laboratory of Bioinformatics, BNRIST Bioinformatics Division, Institute for Precision Medicine & Department of Automation, Tsinghua University, Beijing 100084, China
| | - Yuxin Miao
- MOE Key Laboratory of Bioinformatics, BNRIST Bioinformatics Division, Institute for Precision Medicine & Department of Automation, Tsinghua University, Beijing 100084, China
| | - Zhiyuan Tan
- Department of Finance, Shanghai Advanced Institute of Finance, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Qifan Hu
- MOE Key Laboratory of Bioinformatics, BNRIST Bioinformatics Division, Institute for Precision Medicine & Department of Automation, Tsinghua University, Beijing 100084, China
| | - Yanhong Wu
- MOE Key Laboratory of Bioinformatics, BNRIST Bioinformatics Division, Institute for Precision Medicine & Department of Automation, Tsinghua University, Beijing 100084, China
| | - Xinqi Li
- MOE Key Laboratory of Bioinformatics, BNRIST Bioinformatics Division, Institute for Precision Medicine & Department of Automation, Tsinghua University, Beijing 100084, China
| | - Wenbo Guo
- MOE Key Laboratory of Bioinformatics, BNRIST Bioinformatics Division, Institute for Precision Medicine & Department of Automation, Tsinghua University, Beijing 100084, China
| | - Jin Gu
- MOE Key Laboratory of Bioinformatics, BNRIST Bioinformatics Division, Institute for Precision Medicine & Department of Automation, Tsinghua University, Beijing 100084, China
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Yuan T, Meijia L, Rong C, Jian Y, Lijun H. Identification of novel biomarkers of ferroptosis involved in keloid based on bioinformatics analysis. Int Wound J 2024; 21:e14606. [PMID: 38272797 PMCID: PMC10805535 DOI: 10.1111/iwj.14606] [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: 12/02/2023] [Revised: 12/10/2023] [Accepted: 12/11/2023] [Indexed: 01/27/2024] Open
Abstract
Keloid is a fibroproliferative disease of unknown aetiology, which has a significant impact the quality of life of patients. Ferroptosis plays an important role in the occurrence and development of fibrosis, but there is still a lack of research related to keloids. The objective of this work was to identify the hub genes related to ferroptosis in keloid to better understand the keloid process. The microarray data (GSE7890 GSE145725, and GSE44270) (23 keloid and 22 normal fibroblast) were analysed via the gene expression comprehensive database (GEO). Only GSE7890 met the FerrDB database. Cell cycle and pathway analysis were performed with gene ontology (GO) and the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis was performed to differentially expressed genes (DEG). The differential genes were confirmed in other GEO datasets (GSE145725 and GSE44270), and multi-fibrosis-gene correlation analysed. To validate these hub genes, quantitative real-time PCR (qRT-PCR) was conducted. A total of 581 DEGs were screened, with 417 genes down-regulated and 164 genes up-regulated, with 11 ferroptosis genes significantly up-regulated in both keloid and normal tissue, and 6 genes are consistent with our findings and are associated with multiple fibrosis genes. The qRT-PCR results and tissues of normal skin and keloid agreed with our predictions. Our findings provide new evidence for the ferroptosis-related molecular pathways and biomarker of keloid.
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Affiliation(s)
- Tian Yuan
- Department of Plastic SurgeryThe First Affiliated Hospital of Harbin Medical UniversityHarbinChina
| | - Li Meijia
- Department of Plastic SurgeryThe First Affiliated Hospital of Harbin Medical UniversityHarbinChina
| | - Cheng Rong
- Department of Plastic SurgeryThe First Affiliated Hospital of Harbin Medical UniversityHarbinChina
| | - Yuan Jian
- Department of Plastic SurgeryThe First Affiliated Hospital of Harbin Medical UniversityHarbinChina
| | - Hao Lijun
- Department of Plastic SurgeryThe First Affiliated Hospital of Harbin Medical UniversityHarbinChina
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Liu C, Gao ZW, Liu YQ, Yang L, Wu XN, Dong K, Zhu XM. Down-regulation of DPP4 by TGFβ1/miR29a-3p inhibited proliferation and promoted migration of ovarian cancer cells. Discov Oncol 2023; 14:195. [PMID: 37907650 PMCID: PMC10618141 DOI: 10.1007/s12672-023-00815-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 10/27/2023] [Indexed: 11/02/2023] Open
Abstract
OBJECTIVE To explore the DPP4 expression changes and functions in ovarian cancer (OV), as well as the regulation mechanism for DDP4. METHODS GEPIA2, GSE18520, GSE26712 and UALCAN were used to analyze differences in DPP4 expression between OV tumors and control tissues. Serum DPP4 levels were measured by ELISA. The prognostic values of DPP4 were evaluated using a Kaplan-Meier (KM) plotter. Small interfering RNA was used for DPP4 knockdown in OVCAR-3 and SKOV-3 cells. CCK-8 and scratch healing assays were used to determine the cells' proliferation and migration abilities. Flow cytometry (FCM) was used to detect the cell cycle and apoptosis. A dual-luciferase assay was designed to confirm the regulatory effect of miR-29a-3p on DPP4. RESULTS The expressions of DPP4 mRNA and protein were decreased in OV tumor tissues. Serum DPP4 levels decreased in OV patients. KM plotter analysis showed correlation between high DPP4 expression and a poor prognosis in OV patients. By targeting knockdown of DPP4, we found that OVCAR-3 and SKOV-3 cells' proliferation was inhibited, while cell's migration ability was significantly promoted. FCM analysis showed that DPP4 knockdown induced a decrease in the S phase. Furthermore, DPP4 was shown to be downregulated by miR-29a-3p and TGFβ1 in OVCAR-3 cells, and miR-29a-3p expression was upregulated by TGFβ1. The effects of miR-29a-3p and TGFβ1 on OVCAR-3 cells' biological behaviors were consistent with DPP4 knockdown. CONCLUSION DPP4 was downregulated in OV patients. DPP4 knockdown significantly inhibited OVCAR-3 and SKOV-3 cell proliferation and promoted cell migration. DDP4 can be downregulated by TGFβ1 through the upregulation of miR-29a-3p in OV cells.
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Affiliation(s)
- Chong Liu
- Department of Clinical Diagnosis, Tangdu Hospital, Air Force Military Medical University, Xinsi Road, Xi'an, 710038, China
| | - Zhao-Wei Gao
- Department of Clinical Diagnosis, Tangdu Hospital, Air Force Military Medical University, Xinsi Road, Xi'an, 710038, China
| | - Ying-Qi Liu
- School of Basic Medical Sciences, Air Force Medical University, No. 4 Company, Xi'an, China
| | - Lan Yang
- Department of Clinical Diagnosis, Tangdu Hospital, Air Force Military Medical University, Xinsi Road, Xi'an, 710038, China
| | - Xia-Nan Wu
- Department of Clinical Diagnosis, Tangdu Hospital, Air Force Military Medical University, Xinsi Road, Xi'an, 710038, China
| | - Ke Dong
- Department of Clinical Diagnosis, Tangdu Hospital, Air Force Military Medical University, Xinsi Road, Xi'an, 710038, China.
| | - Xiao-Ming Zhu
- Department of Obstetrics and Gynecology, Hainan Branch of PLA General Hospital, Jianglin Road, Sanya, 572022, China.
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Dirand Z, Tissot M, Chatelain B, Viennet C, Rolin G. Is Spheroid a Relevant Model to Address Fibrogenesis in Keloid Research? Biomedicines 2023; 11:2350. [PMID: 37760792 PMCID: PMC10526056 DOI: 10.3390/biomedicines11092350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/18/2023] [Accepted: 08/18/2023] [Indexed: 09/29/2023] Open
Abstract
Keloid refers to a fibro-proliferative disorder characterized by an accumulation of extracellular matrix at the dermis level, overgrowing beyond the initial wound and forming tumor-like nodule areas. The absence of treatment for keloid is clearly related to limited knowledge about keloid etiology. In vitro, keloids were classically studied through fibroblasts monolayer culture, far from keloid in vivo complexity. Today, cell aggregates cultured as 3D spheroid have gained in popularity as new tools to mimic tissue in vitro. However, no previously published works on spheroids have specifically focused on keloids yet. Thus, we hypothesized that spheroids made of keloid fibroblasts (KFs) could be used to model fibrogenesis in vitro. Our objective was to qualify spheroids made from KFs and cultured in a basal or pro-fibrotic environment (+TGF-β1). As major parameters for fibrogenesis assessment, we evaluated apoptosis, myofibroblast differentiation and response to TGF-β1, extracellular matrix (ECM) synthesis, and ECM-related genes regulation in KFs spheroids. We surprisingly observed that fibrogenic features of KFs are strongly downregulated when cells are cultured in 3D. In conclusion, we believe that spheroid is not the most appropriate model to address fibrogenesis in keloid, but it constitutes an efficient model to study the deactivation of fibrotic cells.
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Affiliation(s)
- Zélie Dirand
- Université de Franche-Comté, Sciences Médicales et Pharmaceutiques, EFS, INSERM, UMR RIGHT, 25000 Besançon, France; (Z.D.)
| | - Marion Tissot
- Université de Franche-Comté, Sciences Médicales et Pharmaceutiques, EFS, INSERM, UMR RIGHT, 25000 Besançon, France; (Z.D.)
| | - Brice Chatelain
- Service de Chirurgie Maxillo-Faciale, Stomatologie et Odontologie Hospitalière, CHU Besançon, 25000 Besançon, France
| | - Céline Viennet
- Université de Franche-Comté, Sciences Médicales et Pharmaceutiques, EFS, INSERM, UMR RIGHT, 25000 Besançon, France; (Z.D.)
| | - Gwenaël Rolin
- Université de Franche-Comté, Sciences Médicales et Pharmaceutiques, CHU Besançon EFS, INSERM, UMR RIGHT, 25000 Besançon, France
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7
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Lee CC, Tsai CH, Chen CH, Yeh YC, Chung WH, Chen CB. An updated review of the immunological mechanisms of keloid scars. Front Immunol 2023; 14:1117630. [PMID: 37033989 PMCID: PMC10075205 DOI: 10.3389/fimmu.2023.1117630] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 03/07/2023] [Indexed: 04/11/2023] Open
Abstract
Keloid is a type of disfiguring pathological scarring unique to human skin. The disorder is characterized by excessive collagen deposition. Immune cell infiltration is a hallmark of both normal and pathological tissue repair. However, the immunopathological mechanisms of keloid remain unclear. Recent studies have uncovered the pivotal role of both innate and adaptive immunity in modulating the aberrant behavior of keloid fibroblasts. Several novel therapeutics attempting to restore regulation of the immune microenvironment have shown variable efficacy. We review the current understanding of keloid immunopathogenesis and highlight the potential roles of immune pathway-specific therapeutics.
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Affiliation(s)
- Chih-Chun Lee
- 1 Department of Medical Education, Chang Gung Memorial Hospital, Keelung, Taiwan
| | - Chia-Hsuan Tsai
- Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Keelung, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Chih-Hao Chen
- Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Keelung, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Yuan-Chieh Yeh
- Department of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Keelung, Taiwan
- Program in Molecular Medicine, College of Life Sciences, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Wen-Hung Chung
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Drug Hypersensitivity Clinical and Research Center, Department of Dermatology, Chang Gung Memorial Hospital, Linkou, Taiwan
- Drug Hypersensitivity Clinical and Research Center, Department of Dermatology, Chang Gung Memorial Hospital, Taipei, Taiwan
- Drug Hypersensitivity Clinical and Research Center, Department of Dermatology, Chang Gung Memorial Hospital, Keelung, Taiwan
- Cancer Vaccine and Immune Cell Therapy Core Laboratory, Chang Gung Memorial Hospital, Linkou, Taiwan
- Chang Gung Immunology Consortium, Chang Gung Memorial Hospital and Chang Gung University, Linkou, Taiwan
- Department of Dermatology, Xiamen Chang Gung Hospital, Xiamen, China
- Xiamen Chang Gung Allergology Consortium, Xiamen Chang Gung Hospital, Xiamen, China
- Whole-Genome Research Core Laboratory of Human Diseases, Chang Gung Memorial Hospital, Keelung, Taiwan
- Immune-Oncology Center of Excellence, Chang Gung Memorial Hospital, Linkou, Taiwan
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Genomic Medicine Core Laboratory, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Chun-Bing Chen
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Drug Hypersensitivity Clinical and Research Center, Department of Dermatology, Chang Gung Memorial Hospital, Linkou, Taiwan
- Drug Hypersensitivity Clinical and Research Center, Department of Dermatology, Chang Gung Memorial Hospital, Taipei, Taiwan
- Drug Hypersensitivity Clinical and Research Center, Department of Dermatology, Chang Gung Memorial Hospital, Keelung, Taiwan
- Cancer Vaccine and Immune Cell Therapy Core Laboratory, Chang Gung Memorial Hospital, Linkou, Taiwan
- Chang Gung Immunology Consortium, Chang Gung Memorial Hospital and Chang Gung University, Linkou, Taiwan
- Department of Dermatology, Xiamen Chang Gung Hospital, Xiamen, China
- Xiamen Chang Gung Allergology Consortium, Xiamen Chang Gung Hospital, Xiamen, China
- Whole-Genome Research Core Laboratory of Human Diseases, Chang Gung Memorial Hospital, Keelung, Taiwan
- Immune-Oncology Center of Excellence, Chang Gung Memorial Hospital, Linkou, Taiwan
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Genomic Medicine Core Laboratory, Chang Gung Memorial Hospital, Linkou, Taiwan
- School of Medicine, National Tsing Hua University, Hsinchu, Taiwan
- *Correspondence: Chun-Bing Chen, ;
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Zheng M, Oh SH, Choi N, Choi YJ, Kim J, Sung JH. CXCL12 inhibits hair growth through CXCR4. Biomed Pharmacother 2022; 150:112996. [PMID: 35462338 DOI: 10.1016/j.biopha.2022.112996] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 04/12/2022] [Accepted: 04/17/2022] [Indexed: 11/26/2022] Open
Abstract
CXCL12 and its receptors, which are highly expressed in the skin, are associated with various cutaneous diseases, including androgenic alopecia. However, their expression and role during the hair cycle are unknown. This study aims to investigate the expression of CXCL12 and its receptor, CXCR4, in the vicinity of hair follicles and their effect on hair growth. CXCL12 was highly expressed in dermal fibroblasts (DFs) and its level was elevated throughout the catagen and telogen phases of the hair cycle. CXCR4 is expressed in the dermal papilla (DP) and outer root sheath (ORS). In hair organ culture, hair loss was induced by recombinant CXCL12 therapy, which delayed the telogen-to-anagen transition and decreased hair length. In contrast, the suppression of CXCL12 using a neutralizing antibody and siRNA triggered the telogen-to-anagen transition and increased hair length in hair organ culture. Neutralization of CXCR7, one of the two receptors for CXCL12, only slightly affected hair growth. However, inhibition of CXCR4, the other receptor for CXCL12, increased hair growth to a considerable extent. In addition, in hair organ culture, the conditioned medium from DFs with CXCL12 siRNA considerably increased the hair length and induced proliferation of DP and ORS cells. CXCL12, through CXCR4 activation, increased STAT3 and STAT5 phosphorylation in DP and ORS cells. In contrast, blocking CXCL12 and CXCR4 decreased the phosphorylation of STAT3 and STAT5. In summary, these findings suggest that CXCL12 inhibits hair growth via the CXCR4/STAT signaling pathway and that CXCL12/CXCR4 pathway inhibitors are a promising treatment option for hair growth.
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Affiliation(s)
- Mei Zheng
- Epi Biotech Co., Ltd., Incheon 21983, South Korea
| | - Sang Ho Oh
- Department of Dermatology and Cutaneous Biology Research Institute, Severance Hospital, Yonsei University College of Medicine, Seoul 03722, South Korea
| | - Nahyun Choi
- Epi Biotech Co., Ltd., Incheon 21983, South Korea
| | | | - Jino Kim
- New Hair Institute, Seoul 06134, South Korea
| | - Jong-Hyuk Sung
- Epi Biotech Co., Ltd., Incheon 21983, South Korea; College of Pharmacy, Institute of Pharmaceutical Sciences, Yonsei University, Incheon 21983, South Korea.
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