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Zonnefeld AG, Cui CY, Tsitsipatis D, Piao Y, Fan J, Mazan-Mamczarz K, Xue Y, Indig FE, De S, Gorospe M. Characterization of age-associated gene expression changes in mouse sweat glands. Aging (Albany NY) 2024; 16:6717-6730. [PMID: 38637019 PMCID: PMC11087089 DOI: 10.18632/aging.205776] [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: 12/18/2023] [Accepted: 03/18/2024] [Indexed: 04/20/2024]
Abstract
Evaporation of sweat on the skin surface is the major mechanism for dissipating heat in humans. The secretory capacity of sweat glands (SWGs) declines during aging, leading to heat intolerance in the elderly, but the mechanisms responsible for this decline are poorly understood. We investigated the molecular changes accompanying SWG aging in mice, where sweat tests confirmed a significant reduction of active SWGs in old mice relative to young mice. We first identified SWG-enriched mRNAs by comparing the skin transcriptome of Eda mutant Tabby male mice, which lack SWGs, with that of wild-type control mice by RNA-sequencing analysis. This comparison revealed 171 mRNAs enriched in SWGs, including 47 mRNAs encoding 'core secretory' proteins such as transcription factors, ion channels, ion transporters, and trans-synaptic signaling proteins. Among these, 28 SWG-enriched mRNAs showed significantly altered abundance in the aged male footpad skin, and 11 of them, including Foxa1, Best2, Chrm3, and Foxc1 mRNAs, were found in the 'core secretory' category. Consistent with the changes in mRNA expression levels, immunohistology revealed that higher numbers of secretory cells from old SWGs express the transcription factor FOXC1, the protein product of Foxc1 mRNA. In sum, our study identified mRNAs enriched in SWGs, including those that encode core secretory proteins, and altered abundance of these mRNAs and proteins with aging in mouse SWGs.
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Affiliation(s)
- Alexandra G. Zonnefeld
- Laboratory of Genetics and Genomics, National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
| | - Chang-Yi Cui
- Laboratory of Genetics and Genomics, National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
| | - Dimitrios Tsitsipatis
- Laboratory of Genetics and Genomics, National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
| | - Yulan Piao
- Laboratory of Genetics and Genomics, National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
| | - Jinshui Fan
- Laboratory of Genetics and Genomics, National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
| | - Krystyna Mazan-Mamczarz
- Laboratory of Genetics and Genomics, National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
| | - Yutong Xue
- Laboratory of Genetics and Genomics, National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
| | - Fred E. Indig
- Confocal Imaging Core Facility, National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
| | - Supriyo De
- Laboratory of Genetics and Genomics, National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
| | - Myriam Gorospe
- Laboratory of Genetics and Genomics, National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
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Wang C, Cao M, Zhao J, Hu A, Liu X, Chen Z, Zhang C, Li H. Epidermal and dermal cells from adult rat eccrine sweat gland-containing skin can reconstruct the three-dimensional structure of eccrine sweat glands. Acta Histochem 2024; 126:152120. [PMID: 38041896 DOI: 10.1016/j.acthis.2023.152120] [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: 07/08/2023] [Revised: 11/19/2023] [Accepted: 11/19/2023] [Indexed: 12/04/2023]
Abstract
BACKGROUND Previously, we have demonstrated that eccrine sweat gland cells (ESGCs) can reconstruct the three-dimensional (3D) structure of eccrine sweat glands (ESGs). However, there is still a need to explore source cells capable of regenerating ESG to address the issue of ESG regeneration in ESGC-deficient conditions, such as severe burns. METHODS The epidermal cells and dermal cells in adult rat ventral foot skin (ESG-bearing) were isolated. The isolated single epidermal cells and dermal cells were mixed with Matrigel, and then the mixture was implanted into the axillary/inguinal fat pads of nude mice. Five weeks after implantation, the Matrigel plugs were harvested and the morphology and differentiation of the cells were examined by H&E staining and fluorescent immunohistochemical staining for ESG markers, such as Na+ -K+ -2Cl- cotransporter 1 (NKCC1), Na+ -K+ -ATPase (NKA), Foxa1 and K14. RESULTS The epidermal cells and dermal cells of adult rat ventral foot skin can reconstruct 3D structure and express specific markers of ESGs in skin, such as NKCC1, NKA and Foxa1, indicating the ESG-phenotypic differentiation of the 3D structures. Double immunofluorescence staining showed that some 3D structures expressed both the myoepithelial cell marker alpha-SMA and the common marker K14 of duct cells and myoepithelial cells, while some 3D structures expressed only K14, indicating that ESG-like 3D structures differentiated into duct-like and secretory coiled cells. CONCLUSION Epidermal and dermal cells from adult ESG-bearing skin can be used as a cell source for ESG regeneration.
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Affiliation(s)
- Cangyu Wang
- Laboratory of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China
| | - Manxiu Cao
- Laboratory of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China
| | - Junhong Zhao
- Laboratory of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China
| | - Anqi Hu
- Laboratory of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China
| | - Xiang Liu
- Laboratory of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China
| | - Zihua Chen
- Laboratory of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China
| | - Cuiping Zhang
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Department and Fourth Medical Center of PLA General Hospital, Beijing, China.
| | - Haihong Li
- Laboratory of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China; Department of Burns and Plastic Surgery, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, Guangdong Province, China.
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Kambal S, Tijjani A, Ibrahim SAE, Ahmed MKA, Mwacharo JM, Hanotte O. Candidate signatures of positive selection for environmental adaptation in indigenous African cattle: A review. Anim Genet 2023; 54:689-708. [PMID: 37697736 DOI: 10.1111/age.13353] [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: 07/28/2023] [Revised: 07/28/2023] [Accepted: 08/19/2023] [Indexed: 09/13/2023]
Abstract
Environmental adaptation traits of indigenous African cattle are increasingly being investigated to respond to the need for sustainable livestock production in the context of unpredictable climatic changes. Several studies have highlighted genomic regions under positive selection probably associated with adaptation to environmental challenges (e.g. heat stress, trypanosomiasis, tick and tick-borne diseases). However, little attention has focused on pinpointing the candidate causative variant(s) controlling the traits. This review compiled information from 22 studies on signatures of positive selection in indigenous African cattle breeds to identify regions under positive selection. We highlight some key candidate genome regions and genes of relevance to the challenges of living in extreme environments (high temperature, high altitude, high infectious disease prevalence). They include candidate genes involved in biological pathways relating to innate and adaptive immunity (e.g. BoLAs, SPAG11, IL1RL2 and GFI1B), heat stress (e.g. HSPs, SOD1 and PRLH) and hypoxia responses (e.g. BDNF and INPP4A). Notably, the highest numbers of candidate regions are found on BTA3, BTA5 and BTA7. They overlap with genes playing roles in several biological functions and pathways. These include but are not limited to growth and feed intake, cell stability, protein stability and sweat gland development. This review may further guide targeted genome studies aiming to assess the importance of candidate causative mutations, within regulatory and protein-coding genome regions, to further understand the biological mechanisms underlying African cattle's unique adaption.
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Affiliation(s)
- Sumaya Kambal
- Livestock Genetics, International Livestock Research Institute, Addis Ababa, Ethiopia
- Department of Genetics and Animal Breeding, Faculty of Animal Production, University of Khartoum, Khartoum, Sudan
- Department of Bioinformatics and Biostatistics, National University, Khartoum, Sudan
| | - Abdulfatai Tijjani
- Centre for Tropical Livestock Genetics and Health, International Livestock Research Institute, Addis Ababa, Ethiopia
- The Jackson Laboratory, Bar Harbor, Maine, USA
| | - Sabah A E Ibrahim
- Department of Bioinformatics and Biostatistics, National University, Khartoum, Sudan
| | - Mohamed-Khair A Ahmed
- Department of Genetics and Animal Breeding, Faculty of Animal Production, University of Khartoum, Khartoum, Sudan
| | - Joram M Mwacharo
- Scotland's Rural College and Centre for Tropical Livestock Genetics and Health, Edinburgh, UK
- Small Ruminant Genomics, International Centre for Agricultural Research in the Dry Areas, Addis Ababa, Ethiopia
| | - Olivier Hanotte
- Livestock Genetics, International Livestock Research Institute, Addis Ababa, Ethiopia
- Centre for Tropical Livestock Genetics and Health, International Livestock Research Institute, Addis Ababa, Ethiopia
- School of Life Sciences, University of Nottingham, Nottingham, UK
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Chen Z, Zhao J, Wang C, Liu X, Chen Z, Zhou J, Zhang L, Zhang C, Li H. Epithelial polarity-driven membrane separation but not cavitation regulates lumen formation of rat eccrine sweat glands. Acta Histochem 2023; 125:152093. [PMID: 37757514 DOI: 10.1016/j.acthis.2023.152093] [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: 05/31/2023] [Revised: 08/31/2023] [Accepted: 09/14/2023] [Indexed: 09/29/2023]
Abstract
BACKGROUND Each eccrine sweat gland (ESG) is a single-tubular structure with a central lumen, and the formation of hollow lumen in the initial solid cell mass is a key developmental process. To date, there are no reports on the mechanism of native ESG lumen formation. METHODS To investigate the lumen morphogenesis and the lumen formation mechanisms of Sprague-Dawley (SD) rat ESGs, SD rat hind-footpads at E20.5, P1-P5, P7, P9, P12, P21, P28 and P56 were obtained. The lumen morphogenesis of ESGs was examined by HE staining and immunofluorescence staining for polarity markers. The possible mechanisms of lumen formation were detected by terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) apoptosis assay and autophagy marker LC3B immunofluorescence staining, and further explored by ouabain intervention experiment. RESULTS In SD rat ESGs, the microlumen was formed at P1, and the small intact lumen with apical-basal polarity appeared at P3. The expression of apical marker F-actin, basal marker Laminin, basolateral marker E-cadherin was consistent with the timing of lumen formation of SD rat ESGs. During rat ESG development, apoptosis and autophagy were not detected. However, inhibition of Na+-K+-ATPase (NKA) with ouabain resulted in decreased lumen size, although neither the timing of lumen formation nor the expression of polarity proteins was altered. CONCLUSIONS Epithelial polarity-driven membrane separation but not cavitation regulates lumen formation of SD rat ESGs. NKA-regulated fluid accumulation drives lumen expansion.
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Affiliation(s)
- Zixiu Chen
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Jinzhou Medical University Graduate Training Base, Shiyan, Hubei Province, China
| | - Junhong Zhao
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Jinzhou Medical University Graduate Training Base, Shiyan, Hubei Province, China
| | - Cangyu Wang
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Jinzhou Medical University Graduate Training Base, Shiyan, Hubei Province, China
| | - Xiang Liu
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Jinzhou Medical University Graduate Training Base, Shiyan, Hubei Province, China
| | - Zihua Chen
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Jinzhou Medical University Graduate Training Base, Shiyan, Hubei Province, China
| | - Jianda Zhou
- Department of Burns and Plastic Surgery, The Third Hospital of Central South University, Changsha, Hunan, China
| | - Lei Zhang
- Mental Health Center, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong Province, China.
| | - Cuiping Zhang
- Research Center for Tissue Repair and Regeneration Affiliated to the Medical Innovation Research Department and Fourth Medical Center of PLA General Hospital, Beijing, China.
| | - Haihong Li
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Jinzhou Medical University Graduate Training Base, Shiyan, Hubei Province, China; Department of Burns and Plastic Surgery, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong Province, China.
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Min J, Tu J, Xu C, Lukas H, Shin S, Yang Y, Solomon SA, Mukasa D, Gao W. Skin-Interfaced Wearable Sweat Sensors for Precision Medicine. Chem Rev 2023; 123:5049-5138. [PMID: 36971504 PMCID: PMC10406569 DOI: 10.1021/acs.chemrev.2c00823] [Citation(s) in RCA: 68] [Impact Index Per Article: 68.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
Wearable sensors hold great potential in empowering personalized health monitoring, predictive analytics, and timely intervention toward personalized healthcare. Advances in flexible electronics, materials science, and electrochemistry have spurred the development of wearable sweat sensors that enable the continuous and noninvasive screening of analytes indicative of health status. Existing major challenges in wearable sensors include: improving the sweat extraction and sweat sensing capabilities, improving the form factor of the wearable device for minimal discomfort and reliable measurements when worn, and understanding the clinical value of sweat analytes toward biomarker discovery. This review provides a comprehensive review of wearable sweat sensors and outlines state-of-the-art technologies and research that strive to bridge these gaps. The physiology of sweat, materials, biosensing mechanisms and advances, and approaches for sweat induction and sampling are introduced. Additionally, design considerations for the system-level development of wearable sweat sensing devices, spanning from strategies for prolonged sweat extraction to efficient powering of wearables, are discussed. Furthermore, the applications, data analytics, commercialization efforts, challenges, and prospects of wearable sweat sensors for precision medicine are discussed.
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Affiliation(s)
- Jihong Min
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125, USA
| | - Jiaobing Tu
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125, USA
| | - Changhao Xu
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125, USA
| | - Heather Lukas
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125, USA
| | - Soyoung Shin
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125, USA
| | - Yiran Yang
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125, USA
| | - Samuel A. Solomon
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125, USA
| | - Daniel Mukasa
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125, USA
| | - Wei Gao
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125, USA
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Liu H, Santos LL, Smith SH. Modulation of Disease-Associated Pathways in Hidradenitis Suppurativa by the Janus Kinase 1 Inhibitor Povorcitinib: Transcriptomic and Proteomic Analyses of Two Phase 2 Studies. Int J Mol Sci 2023; 24:ijms24087185. [PMID: 37108348 PMCID: PMC10139090 DOI: 10.3390/ijms24087185] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 04/04/2023] [Accepted: 04/06/2023] [Indexed: 04/29/2023] Open
Abstract
Janus kinase (JAK)/signal transducer and activator of transcription signaling (STAT) has been implicated in the pathophysiology of hidradenitis suppurativa (HS). This study evaluated treatment-related transcriptomic and proteomic changes in patients with moderate-to-severe HS treated with the investigational oral JAK1-selective inhibitor povorcitinib (INCB054707) in two phase 2 trials. Lesional skin punch biopsies (baseline and Week 8) were taken from active HS lesions of patients receiving povorcitinib (15 or 30 mg) once daily (QD) or a placebo. RNA-seq and gene set enrichment analyses were used to evaluate the effects of povorcitinib on differential gene expression among previously reported gene signatures from HS and wounded skin. The number of differentially expressed genes was the greatest in the 30 mg povorcitinib QD dose group, consistent with the published efficacy results. Notably, the genes impacted reflected JAK/STAT signaling transcripts downstream of TNF-α signaling, or those regulated by TGF-β. Proteomic analyses were conducted on blood samples obtained at baseline and Weeks 4 and 8 from patients receiving povorcitinib (15, 30, 60, or 90 mg) QD or placebo. Povorcitinib was associated with transcriptomic downregulation of multiple HS and inflammatory signaling markers as well as the reversal of gene expression previously associated with HS lesional and wounded skin. Povorcitinib also demonstrated dose-dependent modulation of several proteins implicated in HS pathophysiology, with changes observed by Week 4. The reversal of HS lesional gene signatures and rapid, dose-dependent protein regulation highlight the potential of JAK1 inhibition to modulate underlying disease pathology in HS.
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Affiliation(s)
- Huiqing Liu
- Incyte Corporation, Wilmington, DE 19803, USA
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Cao M, Zhang L, Cheng J, Wang C, Zhao J, Liu X, Yan Y, Tang Y, Chen Z, Li H. Differential antigen expression between human apocrine sweat glands and eccrine sweat glands. Eur J Histochem 2022; 67:3559. [PMID: 36546419 PMCID: PMC9827426 DOI: 10.4081/ejh.2023.3559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Accepted: 11/29/2022] [Indexed: 12/24/2022] Open
Abstract
Bromhidrosis has a great negative impact on personal occupation and social psychology. It is not yet clear whether bromhidrosis is caused by apocrine sweat glands or the co-action of apocrine sweat glands and eccrine sweat glands. To distinguish between apocrine sweat glands and eccrine sweat glands, specific antigen markers for apocrine sweat glands and eccrine sweat glands must be found first. In the study, we detected the expression of K7, K18, K19, Na+-K+-2Cl- cotransporter 1 (NKCC1), carbonic anhydrase II (CAII), Forkhead transcription factor a1 (Foxa1), homeobox transcription factor engrailed homeobox1 (En1), gross cystic disease fluid protein-15 (GCDFP-15), mucin-1 (MUC-1), cluster of differentiation 15 (CD15) and apolipoprotein (APOD) in eccrine sweat glands and apocrine sweat glands by immunofluorescence staining. The results showed that K7, K18, K19, Foxa1, GCDFP-15 and MUC-1 were expressed in both apocrine and eccrine sweat glands, CD15 and APOD were only expressed in apocrine sweat glands, and CAII, NKCC1 and En1 were only expressed in eccrine sweat glands. We conclude that CD15 and APOD can serve as specific markers for apocrine sweat glands, while CAII, NKCC1 and En1 can serve as specific markers for eccrine sweat glands to differentiate the two sweat glands.
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Affiliation(s)
- Manxiu Cao
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei,*These authors contributed equally to this work
| | - Lei Zhang
- Department of Mental Health, Southern University of Science and Technology Hospital, Southern University of Science and Technology School of Medicine, Shenzhen, Guangdong,*These authors contributed equally to this work
| | - Jiaqi Cheng
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei,*These authors contributed equally to this work
| | - Cangyu Wang
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei
| | - Junhong Zhao
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei
| | - Xiang Liu
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei
| | - Yongjing Yan
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei
| | - Yue Tang
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei
| | - Zixiu Chen
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei
| | - Haihong Li
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei,Department of Wound Repair; Institute of Wound Repair and Regeneration Medicine, Southern University of Science and Technology Hospital, Southern University of Science and Technology School of Medicine, Shenzhen, Guangdong, China,Correspondence: Prof. Haihong Li, Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, 32 South Renmin Road, Shiyan 442000, Hubei, China.
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Sosa F, Carmickle AT, Oliveira LJ, Sagheer M, Saleem M, Yu FH, Altman MD, Dikmen S, Denicol AC, Sonstegard TS, Larson CC, Hansen PJ. Effects of the bovine SLICK1 mutation in PRLR on sweat gland area, FOXA1 abundance, and global gene expression in skin. J Dairy Sci 2022; 105:9206-9215. [PMID: 36085108 DOI: 10.3168/jds.2022-22272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 06/14/2022] [Indexed: 11/19/2022]
Abstract
The SLICK1 mutation in the prolactin receptor (PRLR) results in a short-hair coat and increased ability to regulate body temperature during heat stress. It is unclear whether the mutation affects capacity for sweating. The objective of this observational study was to evaluate whether the SLICK1 mutation in PRLR alters characteristics of skin related to sweat gland abundance or function. Skin biopsies from 31 Holstein heifers, including 14 wild-type (SL-/-) and 17 heterozygous slick (SL+/-), were subjected to histological analysis to determine the percent of the surface area of skin sections that are occupied by sweat glands. We detected no effect of genotype on this variable. Immunohistochemical analysis of the forkhead transcription factor A1 (FOXA1), a protein essential for sweating in mice, from 6 SL-/- and 6 SL+/- heifers indicated twice as much FOXA1 in sweat glandular epithelia of SL+/- heifers as in SL-/- heifers. Results from RNA sequencing of skin biopsies from 5 SL-/- and 7 SL+/- heifers revealed few genes that were differentially expressed and none that have been associated with sweat gland development or function. In conclusion, results do not support the idea that the SLICK1 mutation changes the abundance of sweat glands in skin, but do show that functional properties of sweat glands, as indicated by increased abundance of immunoreactive FOXA1, are modified by inheritance of the mutation in PRLR.
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Affiliation(s)
- F Sosa
- Department of Animal Sciences, D.H. Barron Reproductive and Perinatal Biology Research Program, and Genetics Institute, University of Florida, Gainesville 32611-0910
| | - A T Carmickle
- Department of Animal Science, University of California-Davis, Davis 95616
| | - L J Oliveira
- Department of Pathology, College of Veterinary Medicine, University of Georgia, Athens 30602
| | - M Sagheer
- Department of Animal Sciences, D.H. Barron Reproductive and Perinatal Biology Research Program, and Genetics Institute, University of Florida, Gainesville 32611-0910
| | - M Saleem
- Department of Animal Sciences, D.H. Barron Reproductive and Perinatal Biology Research Program, and Genetics Institute, University of Florida, Gainesville 32611-0910; Department of Theriogenology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
| | - F H Yu
- Interdisciplinary Center for Biotechnology Research, University of Florida, Gainesville 32610
| | - M D Altman
- Department of Animal Science, University of California-Davis, Davis 95616
| | - S Dikmen
- Faculty of Veterinary Medicine, Department of Animal Science, University of Uludag, Bursa, 16059, Turkey
| | - A C Denicol
- Department of Animal Science, University of California-Davis, Davis 95616
| | | | - C C Larson
- Okeechobee County Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida, Okeechobee 34972
| | - P J Hansen
- Department of Animal Sciences, D.H. Barron Reproductive and Perinatal Biology Research Program, and Genetics Institute, University of Florida, Gainesville 32611-0910.
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Zhao J, Zhang L, Du L, Chen Z, Tang Y, Chen L, Liu X, You L, Zhang Y, Fu X, Li H. Foxa1 mediates eccrine sweat gland development through transcriptional regulation of Na-K-ATPase expression. Braz J Med Biol Res 2022; 55:e12149. [PMID: 35976271 PMCID: PMC9377534 DOI: 10.1590/1414-431x2022e12149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 06/08/2022] [Indexed: 02/05/2023] Open
Abstract
Eccrine sweat glands (ESGs) perform critical functions in temperature regulation in humans. Foxa1 plays an important role in ESG maturation and sweat secretion. Its molecular mechanism, however, remains unknown. This study investigated the expression of Foxa1 and Na-K-ATPase (NKA) in rat footpads at different development stages using immunofluorescence staining, qRT-PCR, and immunoblotting. Also, bioinformatics analysis and Foxa1 overexpression and silencing were employed to evaluate Foxa1 regulation of NKA. The results demonstrated that Foxa1 was consistently expressed during the late stages of ESGs and had a significant role in secretory coil maturation during sweat secretion. Furthermore, the mRNA abundance and protein expression of NKA had similar accumulation trends to those of Foxa1, confirming their underlying connections. Bioinformatics analysis revealed that Foxa1 may interact with these two proteins via binding to conserved motifs in their promoter regions. Foxa1 gain-of-function and loss-of-function experiments in Foxa1-modified cells demonstrated that the activities of NKA were dependent on the presence of Foxa1. Collectively, these data provided evidence that Foxa1 may influence ESG development through transcriptional regulation of NKA expression.
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Affiliation(s)
- Junhong Zhao
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, China
| | - Lei Zhang
- Mental Health Center, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, China
| | - Lijie Du
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, China
| | - Zixiu Chen
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, China
| | - Yue Tang
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, China
| | - Lijun Chen
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, China
| | - Xiang Liu
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, China
| | - Lei You
- School of Basic Medicine, Academy of Bio-Medicine Research, Hubei University of Medicine, Shiyan, Hubei, China
| | - Yonghong Zhang
- School of Basic Medicine, Academy of Bio-Medicine Research, Hubei University of Medicine, Shiyan, Hubei, China
| | - Xiaobing Fu
- Wound Healing and Cell Biology Laboratory, The First Affiliated Hospital, Chinese PLA General Hospital, Beijing, China
| | - Haihong Li
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, China
- Department of Plastic Surgery and Burn Center, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
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Fujii N, Amano T, Kenny GP, Mündel T, Lei TH, Honda Y, Kondo N, Nishiyasu T. TMEM16A blockers T16Ainh-A01 and benzbromarone do not modulate the regulation of sweating and cutaneous vasodilatation in humans in vivo. Exp Physiol 2022; 107:844-853. [PMID: 35688020 DOI: 10.1113/ep090521] [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: 04/19/2022] [Accepted: 06/07/2022] [Indexed: 11/08/2022]
Abstract
NEW FINDINGS What is the central question of this study? Do transmembrane member 16A (TMEM16A) blockers modulate the activation of heat loss responses of sweating and cutaneous vasodilatation? What are the main finding and its importance? Relative to the vehicle control site, TMEM16A blockers T16Ainh-A01 and benzbromarone had no effect on sweat rate or cutaneous vascular conductance during whole-body heating inducing a 1.1 ± 0.1°C increase in core temperature above baseline resting levels. These results suggest that TMEM16A blockers T16Ainh-A01 and benzbromarone do not modulate the regulation of sweating and cutaneous vasodilatation during whole-body heat stress. ABSTRACT Animal and in vitro studies suggest that transmembrane member 16A (TMEM16A), a Ca2+ -activated Cl- channel, contributes to regulating eccrine sweating. However, direct evidence supporting this possibility in humans is lacking. We assessed the hypothesis that TMEM16A blockers attenuate sweating during whole-body heating in humans. Additionally, we assessed the associated changes in the heat loss response of cutaneous vasodilatation to determine if a functional role of TMEM16A may exist. Twelve young (24 ± 2 years) adults (six females) underwent whole-body heating using a water-perfused suit to raise core temperature 1.1 ± 0.1°C above baseline. Sweat rate and cutaneous vascular conductance (normalized to maximal conductance via administration of sodium nitroprusside) were evaluated continuously at four forearm skin sites treated continuously by intradermal microdialysis with (1) lactated Ringer's solution (control), (2) 5% dimethyl sulfoxide (DMSO) serving as a vehicle control, or (3) TMEM16A blockers 1 mM T16Ainh-A01 or 2 mM benzbromarone dissolved in 5% DMSO solution. All drugs were administered continuously via intradermal microdialysis. Whole-body heating increased core temperature progressively and this was paralleled by an increase in sweat rate and cutaneous vascular conductance at all skin sites. However, sweat rate (all P > 0.318) and cutaneous vascular conductance (all P ≥ 0.073) did not differ between the vehicle control site relative to the TMEM16A blocker-treated sites. Collectively, our findings indicate that TMEM16A blockers T16Ainh-A01 and benzbromarone do not modulate the regulation of sweating and cutaneous vasodilatation during whole-body heating in young adults in vivo.
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Affiliation(s)
- Naoto Fujii
- Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba, Japan
| | - Tatsuro Amano
- Laboratory for Exercise and Environmental Physiology, Faculty of Education, Niigata University, Niigata, Japan
| | - Glen P Kenny
- Human and Environmental Physiology Research Unit, University of Ottawa, Ottawa, Canada
| | - Toby Mündel
- School of Sport Exercise and Nutrition, Massey University, Palmerston North, New Zealand
| | - Tze-Huan Lei
- College of Physical Education, Hubei Normal University, Huangshi, China
| | - Yasushi Honda
- Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba, Japan
| | - Narihiko Kondo
- Laboratory for Applied Human Physiology, Graduate School of Human Development and Environment, Kobe University, Kobe, Japan
| | - Takeshi Nishiyasu
- Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba, Japan
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Wang L, Zhu H, Sun W, Liang L, Li H, Han C, Huang W, Zhao B, Peng P, Qin M, Shi L, Mo Y, Huang J. Low expression of bestrophin-2 is associated with poor prognosis in colon cancer. Gene 2021; 813:146117. [PMID: 34902511 DOI: 10.1016/j.gene.2021.146117] [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: 09/07/2021] [Revised: 11/10/2021] [Accepted: 12/06/2021] [Indexed: 12/25/2022]
Abstract
OBJECTIVES The purpose of this research was to confirm the prognostic value of bestrophin-2 (BEST2), one of the hub genes in colon cancer, via bioinformatics analysis and validation in public databases and immunohistochemistry detection. METHODS The GEO2R online tool and Venn diagram software were utilized to identify differentially expressed genes (DEGs) from expression profiles, including GSE20916, GSE44861 and GSE74602, from the Gene Expression Omnibus (GEO). The overall survival (OS) and disease-free survival (DFS) of colon cancer patients from The Cancer Genome Atlas (TCGA) were analyzed through Kaplan-Meier survival curves. Verification of the significance of BEST2 in colon cancer was based on TCGA, Genotype Tissue Expression (GTEx) and 10 datasets from GEO. BEST2 expression was detected with immunohistochemistry (IHC) in 330 colon tissue samples on microarrays including 165 colon cancerand 165 adjacent normal tissues. For further validation, comprehensive analysis from tissue microarrays and multiple datasets was performed by the summarizing of receiver operating characteristic (SROC) curves and the standard mean differences (SMDs). BEST2 expression in various kinds of colon cancer tissues and cell lines in the context of pancancer was obtained from the Expression Atlas database. The CBioPortal database was queried to identify BEST2 gene alterations and mutation status in colon cancer. Correlated genes (CEGs) with BEST2 and DEGs from public database data were assembled for functional and pathway enrichment analysis. RESULTS We identified 85 DEGs from the three datasets and screened out BEST2 as a prognostic predictor via the TCGA database. Colon cancer patients with high expression of BEST2 had better survival than patients with low BEST2 (HR = 0.5, P = 0.006) as shown in Kaplan-Meier survival curves in GEPIA. In all, 1463 colon cancer tissues and 1023 colon normal tissues were gathered via public databases as well as in-house tissue microarrays. The comprehensiveexpression analysis suggested low-expression of BEST2 in colon cancer (SMD = -2.48, 95% CI [-3.15- -1.80]) and the notable efficacy of BEST2 expression in differentiating colon cancer from noncancer samples (AUC = 0.97). Gene alteration status of BEST2 occurred in 5% of colon cancer cases, mostly missense mutations and deep deletions. Genes positively correlated with BEST2 and DEGs primarily aggregated in pathways such as anion absorption, digestive juice secretion, cAMP signaling and so on (P < 0.05). CONCLUSION Ampleevidencesupportsthe role of BEST2 in distinguishing colon cancer from normal tissues in this research. Low expression of BEST2 is correlated with a shorter OS, which implies that BEST2 can be employed as a potential biomarker and therapeutictarget in colon cancer.
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Affiliation(s)
- Li Wang
- Department of Medical Oncology, The Second Affiliated Hospital of Guangxi Medical University, 166 Daxuedong Road, Nanning 530000, Guangxi Zhuang Autonomous Region, China
| | - Huawei Zhu
- Department of Medical Oncology, The Second Affiliated Hospital of Guangxi Medical University, 166 Daxuedong Road, Nanning 530000, Guangxi Zhuang Autonomous Region, China
| | - Weiliang Sun
- Department of Medical Oncology, The Second Affiliated Hospital of Guangxi Medical University, 166 Daxuedong Road, Nanning 530000, Guangxi Zhuang Autonomous Region, China
| | - Li Liang
- Department of Medical Oncology, The Second Affiliated Hospital of Guangxi Medical University, 166 Daxuedong Road, Nanning 530000, Guangxi Zhuang Autonomous Region, China
| | - Hui Li
- Department of Medical Oncology, The Second Affiliated Hospital of Guangxi Medical University, 166 Daxuedong Road, Nanning 530000, Guangxi Zhuang Autonomous Region, China
| | - Chenglong Han
- Department of Medical Oncology, The Second Affiliated Hospital of Guangxi Medical University, 166 Daxuedong Road, Nanning 530000, Guangxi Zhuang Autonomous Region, China
| | - Wenfeng Huang
- Department of Medical Oncology, The Second Affiliated Hospital of Guangxi Medical University, 166 Daxuedong Road, Nanning 530000, Guangxi Zhuang Autonomous Region, China
| | - Bi Zhao
- Department of Medical Oncology, The Second Affiliated Hospital of Guangxi Medical University, 166 Daxuedong Road, Nanning 530000, Guangxi Zhuang Autonomous Region, China
| | - Peng Peng
- Department of Gastroenterology, The Second Affiliated Hospital of Guangxi Medical University, 166 Daxuedong Road, Nanning 530000, Guangxi Zhuang Autonomous Region, China
| | - Mengbin Qin
- Department of Gastroenterology, The Second Affiliated Hospital of Guangxi Medical University, 166 Daxuedong Road, Nanning 530000, Guangxi Zhuang Autonomous Region, China
| | - Ling Shi
- Department of Pathology, The Second Affiliated Hospital of Guangxi Medical University, 166 Daxuedong Road, Nanning 530000, Guangxi Zhuang Autonomous Region, China
| | - Yueqing Mo
- Department of Pathology, The Second Affiliated Hospital of Guangxi Medical University, 166 Daxuedong Road, Nanning 530000, Guangxi Zhuang Autonomous Region, China
| | - Jiean Huang
- Department of Gastroenterology, The Second Affiliated Hospital of Guangxi Medical University, 166 Daxuedong Road, Nanning 530000, Guangxi Zhuang Autonomous Region, China
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Owji AP, Kittredge A, Zhang Y, Yang T. Structure and Function of the Bestrophin family of calcium-activated chloride channels. Channels (Austin) 2021; 15:604-623. [PMID: 34612806 PMCID: PMC8496536 DOI: 10.1080/19336950.2021.1981625] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Abstract
Bestrophins are a family of calcium-activated chloride channels (CaCCs) with relevance to human physiology and a myriad of eye diseases termed "bestrophinopathies". Since the identification of bestrophins as CaCCs nearly two decades ago, extensive studies from electrophysiological and structural biology perspectives have sought to define their key channel features including calcium sensing, gating, inactivation, and anion selectivity. The initial X-ray crystallography studies on the prokaryotic homolog of Best1, Klebsiella pneumoniae (KpBest), and the Best1 homolog from Gallus gallus (chicken Best1, cBest1), laid the foundational groundwork for establishing the architecture of Best1. Recent progress utilizing single-particle cryogenic electron microscopy has further elucidated the molecular mechanism of gating in cBest1 and, separately, the structure of Best2 from Bos taurus (bovine Best2, bBest2). Meanwhile, whole-cell patch clamp, planar lipid bilayer, and other electrophysiologic analyses using these models as well as the human Best1 (hBest1) have provided ample evidence describing the functional properties of the bestrophin channels. This review seeks to consolidate these structural and functional results to paint a broad picture of the underlying mechanisms comprising the bestrophin family's structure-function relationship.
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Affiliation(s)
- Aaron P Owji
- Department of Pharmacology, Columbia University, NY, USA
| | - Alec Kittredge
- Department of Pharmacology, Columbia University, NY, USA
| | - Yu Zhang
- Department of Ophthalmology, Columbia University, NY, USA
| | - Tingting Yang
- Department of Ophthalmology, Columbia University, NY, USA
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Amano T, Fujii N, Kenny GP, Okamoto Y, Inoue Y, Kondo N. Effects of L-type voltage-gated Ca 2+ channel blockade on cholinergic and thermal sweating in habitually trained and untrained men. Am J Physiol Regul Integr Comp Physiol 2020; 319:R584-R591. [PMID: 32966123 DOI: 10.1152/ajpregu.00167.2020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
We evaluated the hypothesis that the activation of L-type voltage-gated Ca2+ channels contributes to exercise training-induced augmentation in cholinergic sweating. On separate days, 10 habitually trained and 10 untrained men participated in two experimental protocols. Prior to each protocol, we administered 1% verapamil (Verapamil, L-type voltage-gated Ca2+ channel blocker) and saline (Control) at forearm skin sites on both arms via transdermal iontophoresis. In protocol 1, we administered low (0.001%) and high (1%) doses of pilocarpine at both the verapamil-treated and verapamil-untreated forearm sites. In protocol 2, participants were passively heated by immersing their limbs in hot water (43°C) until rectal temperature increased by 1.0°C above baseline resting levels. Sweat rate at all forearm sites was continuously measured throughout both protocols. Pilocarpine-induced sweating in Control was higher in trained than in untrained men for both the concentrations of pilocarpine (both P ≤ 0.001). Pilocarpine-induced sweating at the low-dose site was attenuated at the Verapamil versus the Control site in both the groups (both P ≤ 0.004), albeit the reduction was greater in trained as compared with in untrained men (P = 0.005). The verapamil-mediated reduction in sweating remained intact at the high-dose pilocarpine site in the untrained men (P = 0.004) but not the trained men (P = 0.180). Sweating did not differ between Control and Verapamil sites with increases in rectal temperature in both groups (interaction, P = 0.571). We show that activation of L-type voltage-gated Ca2+ channels modulates sweat production in habitually trained men induced by a low dose of pilocarpine. However, no effect on sweating was observed during passive heating in either group.
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Affiliation(s)
- Tatsuro Amano
- Laboratory for Exercise and Environmental Physiology, Faculty of Education, Niigata University, Niigata, Japan
| | - Naoto Fujii
- Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba City, Japan
| | - Glen P Kenny
- Human and Environmental Physiology Research Unit, University of Ottawa, Ottawa, Canada
| | - Yumi Okamoto
- Laboratory for Exercise and Environmental Physiology, Faculty of Education, Niigata University, Niigata, Japan
| | - Yoshimitsu Inoue
- Laboratory for Human Performance Research, Osaka International University, Osaka, Japan
| | - Narihiko Kondo
- Laboratory for Applied Human Physiology, Graduate School of Human Development and Environment, Kobe University, Kobe, Japan
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14
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Amano T, Fujii N, Kenny GP, Nishiyasu T, Inoue Y, Kondo N. The relative contribution of α- and β-adrenergic sweating during heat exposure and the influence of sex and training status. Exp Dermatol 2020; 29:1216-1224. [PMID: 33015872 DOI: 10.1111/exd.14208] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 09/14/2020] [Accepted: 09/27/2020] [Indexed: 02/04/2023]
Abstract
While human eccrine sweat glands respond to adrenergic agonists, there remains a paucity of information on the factors modulating this response. Thus, we assessed the relative contribution of α- and β-adrenergic sweating during a heat exposure and as a function of individual factors of sex and training status. α- and β-adrenergic sweating was assessed in forty-eight healthy young men (n = 35) and women (n = 13) including endurance-trained (n = 12) and untrained men (n = 12) under non-heat exposure (temperate, 25°C; n = 17) and heat exposure (hot, 35°C; n = 48) conditions using transdermal iontophoresis of phenylephrine (α-adrenergic agonist) and salbutamol (β-adrenergic agonist) on the ventral forearm, respectively. Adrenergic sweating was also measured after iontophoretic administration of atropine (muscarinic receptor antagonist) or saline (control) to evaluate how changes in muscarinic receptor activity modulate the adrenergic response to a heat exposure (n = 12). α- and β-adrenergic sweating was augmented in hot compared with temperate conditions (both P ≤ .014), albeit the relative increase was greater in β (~5.4-fold)- as compared to α (~1.5-fold)-adrenergic-mediated sweating response. However, both α- and β-adrenergic sweating was abolished by atropinization (P = .001). Endurance-trained men showed an augmentation in α- (P = .043) but not β (P = .960)-adrenergic sweating as compared to untrained men. Finally, a greater α- and β-adrenergic sweating response (both P ≤ .001) was measured in habitually active men than in women. We show that heat exposure augments α-and β-adrenergic sweating differently via mechanisms associated with altered muscarinic receptor activity. Sex and training status modulate this response.
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Affiliation(s)
- Tatsuro Amano
- Laboratory for Exercise and Environmental Physiology, Faculty of Education, Niigata University, Niigata, Japan
| | - Naoto Fujii
- Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba City, Japan
| | - Glen P Kenny
- Human and Environmental Physiology Research Unit, University of Ottawa, Ottawa, Canada
| | - Takeshi Nishiyasu
- Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba City, Japan
| | - Yoshimitsu Inoue
- Laboratory for Human Performance Research, Osaka International University, Osaka, Japan
| | - Narihiko Kondo
- Laboratory for Applied Human Physiology, Graduate School of Human Development and Environment, Kobe University, Kobe, Japan
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15
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Owji AP, Zhao Q, Ji C, Kittredge A, Hopiavuori A, Fu Z, Ward N, Clarke OB, Shen Y, Zhang Y, Hendrickson WA, Yang T. Structural and functional characterization of the bestrophin-2 anion channel. Nat Struct Mol Biol 2020; 27:382-391. [PMID: 32251414 PMCID: PMC7150642 DOI: 10.1038/s41594-020-0402-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 02/28/2020] [Indexed: 01/21/2023]
Abstract
The bestrophin family of calcium (Ca2+)-activated chloride (Cl-) channels, which mediate the influx and efflux of monovalent anions in response to the levels of intracellular Ca2+, comprises four members in mammals (bestrophin 1-4). Here we report cryo-EM structures of bovine bestrophin-2 (bBest2) bound and unbound by Ca2+ at 2.4- and 2.2-Å resolution, respectively. The bBest2 structure highlights four previously underappreciated pore-lining residues specifically conserved in Best2 but not in Best1, illustrating the differences between these paralogs. Structure-inspired electrophysiological analysis reveals that, although the channel is sensitive to Ca2+, it has substantial Ca2+-independent activity for Cl-, reflecting the opening at the cytoplasmic restriction of the ion conducting pathway even when Ca2+ is absent. Moreover, the ion selectivity of bBest2 is controlled by multiple residues, including those involved in gating.
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Affiliation(s)
- Aaron P Owji
- Department of Pharmacology, Columbia University, New York, NY, USA
| | - Qingqing Zhao
- Department of Pharmacology and Physiology, University of Rochester, School of Medicine and Dentistry, Rochester, NY, USA
- Eye Center, Renmin Hospital of Wuhan University, Wuhan, China
| | - Changyi Ji
- Department of Pharmacology and Physiology, University of Rochester, School of Medicine and Dentistry, Rochester, NY, USA
| | - Alec Kittredge
- Department of Pharmacology and Physiology, University of Rochester, School of Medicine and Dentistry, Rochester, NY, USA
| | - Austin Hopiavuori
- Department of Pharmacology and Physiology, University of Rochester, School of Medicine and Dentistry, Rochester, NY, USA
| | - Ziao Fu
- Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY, USA
| | - Nancy Ward
- Department of Pharmacology and Physiology, University of Rochester, School of Medicine and Dentistry, Rochester, NY, USA
| | - Oliver B Clarke
- Department of Physiology and Cellular Biophysics, Columbia University, New York, NY, USA
| | - Yin Shen
- Eye Center, Renmin Hospital of Wuhan University, Wuhan, China.
| | - Yu Zhang
- Department of Ophthalmology, Columbia University, New York, NY, USA.
| | - Wayne A Hendrickson
- Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY, USA.
- Department of Physiology and Cellular Biophysics, Columbia University, New York, NY, USA.
- New York Structural Biology Center, New York, NY, USA.
| | - Tingting Yang
- Department of Pharmacology and Physiology, University of Rochester, School of Medicine and Dentistry, Rochester, NY, USA.
- Department of Ophthalmology, Columbia University, New York, NY, USA.
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16
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Du L, Zhang X, Chen L, Zhang L, Li H. K31 as a novel marker for clear secretory cells in human eccrine sweat glands. J Mol Histol 2020; 51:47-53. [PMID: 31975318 DOI: 10.1007/s10735-020-09855-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 01/20/2020] [Indexed: 02/05/2023]
Abstract
K31 was previously considered as one of the hair keratins. During a study on differential markers between hair follicles and eccrine sweat glands, we observed that K31 was expressed in eccrine sweat gland cells in a scattered pattern, similar to the distribution of dark or clear secretory cells. To investigate the precise cell localization of K31 in human eccrine sweat glands and find new marker for eccrine sweat gland cells, human skin samples were fixed, paraffined and sectioned. The serial sections were stained for K31, dark secretory cell marker gross cystic disease fluid protein 15 (GCDFP15) and clear secretory cell marker carbonic anhydrase II (CAII). The exact cell localization of K31 was detected by double immunofluorescence staining of K31 and a serial of cell-specific markers, and further by dual stain using a combination of periodic acid-Schiff (PAS) and immunofluorescence for K31 and GCDFP15. The expression pattern of K31-positive cells was similar to that of CAII-positive cells but was different from that of GCDFP15-positive staining in serial sections. Double immunofluorescent staining showed that K31-positive cells co-expressed K7 and CAII, but not S100P, α-SMA or GCDFP15. Dual stain by combined PAS and immunofluorescence showed that K31-positive cells are negative for PAS staining. We conclude that K31 is a previously unreported eccrine clear cell marker that allows for distinction between clear and dark secretory cells, as well as between secretory coils and ducts of eccrine sweat glands in human eccrine sweat glands.
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Affiliation(s)
- Lijie Du
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, 32 South Renmin Road, Shiyan, 442000, Hubei, China
| | - Xiang Zhang
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, 32 South Renmin Road, Shiyan, 442000, Hubei, China
| | - Liyun Chen
- Department of Plastic Surgery and Burn Center, Second Affiliated Hospital, Shantou University Medical College, North Dongxia Road, Shantou, 515041, Guangdong, China
| | - Lei Zhang
- Mental Health Center, Taihe Hospital, Hubei University of Medicine, 32 South Renmin Road, Shiyan, 442000, Hubei, China
| | - Haihong Li
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, 32 South Renmin Road, Shiyan, 442000, Hubei, China.
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Cui C, Driscoll RK, Piao Y, Chia CW, Gorospe M, Ferrucci L. Skewed macrophage polarization in aging skeletal muscle. Aging Cell 2019; 18:e13032. [PMID: 31478346 PMCID: PMC6826159 DOI: 10.1111/acel.13032] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 07/02/2019] [Accepted: 08/05/2019] [Indexed: 12/15/2022] Open
Abstract
Skeletal muscle aging is a major cause of disability and frailty in the elderly. The progressive impairment of skeletal muscle function with aging was recently linked to a disequilibrium between damage and repair. Macrophages participate in muscle tissue repair, first as pro-inflammatory M1 subtype and then as anti-inflammatory M2 subtype. However, information on the presence of macrophages in skeletal muscle is still sporadic and the effect of aging on macrophage phenotype remains unknown. In this study, we sought to characterize the polarization status of macrophages in skeletal muscle of persons across a wide range of ages. We found that most macrophages in human skeletal muscle are M2, and that this number increased with advancing age. On the contrary, M1 macrophages declined with aging, making the total number of macrophages invariant with older age. Notably, M2 macrophages colocalized with increasing intermuscular adipose tissue (IMAT) in aging skeletal muscle. Similarly, aged BALB/c mice showed increased IMAT and M2 macrophages in skeletal muscle, accompanied by slightly increased collagen protein production. Collectively, we report that polarization of macrophages to the major M2 subtype is associated with IMAT and propose that increased M2 in aged skeletal muscle may impact upon muscle metabolism associated with aging.
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Affiliation(s)
- Chang‐Yi Cui
- Laboratory of Genetics and Genomics, National Institute on Aging Intramural Research Program National Institutes of Health Baltimore MD USA
| | - Riley K. Driscoll
- Laboratory of Genetics and Genomics, National Institute on Aging Intramural Research Program National Institutes of Health Baltimore MD USA
| | - Yulan Piao
- Laboratory of Genetics and Genomics, National Institute on Aging Intramural Research Program National Institutes of Health Baltimore MD USA
| | - Chee W. Chia
- Laboratory of Clinical Investigation, National Institute on Aging Intramural Research Program National Institutes of Health Baltimore MD USA
| | - Myriam Gorospe
- Laboratory of Genetics and Genomics, National Institute on Aging Intramural Research Program National Institutes of Health Baltimore MD USA
| | - Luigi Ferrucci
- Translational Gerontology Branch, National Institute on Aging Intramural Research Program National Institutes of Health Baltimore MD USA
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Koumangoye R, Omer S, Kabeer MH, Delpire E. Novel Human NKCC1 Mutations Cause Defects in Goblet Cell Mucus Secretion and Chronic Inflammation. Cell Mol Gastroenterol Hepatol 2019; 9:239-255. [PMID: 31655271 PMCID: PMC6957845 DOI: 10.1016/j.jcmgh.2019.10.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Revised: 10/06/2019] [Accepted: 10/15/2019] [Indexed: 02/08/2023]
Abstract
BACKGROUND & AIMS Infections resulting from intestinal yeast and bacteria affect a large number of patients with deficits in absorptive or secretory epithelial transport mechanisms. The basolateral Na+-K+-2Cl- cotransporter (NKCC1) has been implicated in intestinal epithelial fluid secretion. Two patients with deleterious heterozygous (NKCC1-DFX, DFX for Asp-Phe-stop codon) or homozygous (Kilquist) mutations in SLC12A2 (NKCC1) suffered from gastrointestinal deficits. Because of chronic infections, the colon and the small intestine of the NKCC1-DFX patient were resected surgically. METHODS To investigate how NKCC1 affects the integrity and function of the gut epithelia, we used a mouse model recapitulating the NKCC1-DFX patient mutation. Electron microscopy and immunostaining were used to analyze the integrity of the colonic mucus layers and immune cell infiltration. Fluorescence in situ hybridization was performed on the distal colon sections to measure bacteria translocation to the mucosa and submucosa. Citrobacter rodentium was used to measure mouse ability to clear enteric infection. A multiplex cytokine assay was used to analyze mouse inflammatory response to infection. RESULTS We show that NKCC1-DFX expression causes defective goblet cell mucus granule exocytosis, leading to secretion of intact granules into the lumen of the large intestine. In addition, NKCC1-DFX colon submucosal glands secrete mucus that remained attached to the epithelium. Importantly, expression of the mutant NKCC1 or complete loss of NKCC1 function leads to aggravated inflammatory response to C rodentium infection. Compared with wild-type, NKCC1-DFX mice showed decreased expression of claudin-2, a tight junction protein involved in paracellular Na+ and water transport and enteric infection clearance. CONCLUSIONS Our data indicate that NKCC1-DFX impairs gut barrier function by affecting mucus secretion and immune properties.
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Affiliation(s)
- Rainelli Koumangoye
- Department of Anesthesiology, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Salma Omer
- Department of Anesthesiology, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Mustafa H. Kabeer
- Pediatric General and Thoracic Surgery, Children’s Hospital Orange County, Orange, California,Department of Surgery, University of California, Irvine, California
| | - Eric Delpire
- Department of Anesthesiology, Vanderbilt University School of Medicine, Nashville, Tennessee,Correspondence Address correspondence to: Eric Delpire, PhD, Department of Anesthesiology, Vanderbilt University School of Medicine, T-4202 Medical Center North, 1161 21st Avenue South, Nashville, Tennessee 37232-2520. fax: (615) 343-3916.
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Fraik AK, Quackenbush C, Margres MJ, Comte S, Hamilton DG, Kozakiewicz CP, Jones M, Hamede R, Hohenlohe PA, Storfer A, Kelley JL. Transcriptomics of Tasmanian Devil ( Sarcophilus Harrisii) Ear Tissue Reveals Homogeneous Gene Expression Patterns across a Heterogeneous Landscape. Genes (Basel) 2019; 10:E801. [PMID: 31614864 PMCID: PMC6826840 DOI: 10.3390/genes10100801] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 10/03/2019] [Accepted: 10/08/2019] [Indexed: 02/06/2023] Open
Abstract
In an era of unprecedented global change, exploring patterns of gene expression among wild populations across their geographic range is crucial for characterizing adaptive potential. RNA-sequencing studies have successfully characterized gene expression differences among populations experiencing divergent environmental conditions in a wide variety of taxa. However, few of these studies have identified transcriptomic signatures to multivariate, environmental stimuli among populations in their natural environments. Herein, we aim to identify environmental and sex-driven patterns of gene expression in the Tasmanian devil (Sarcophilus harrisii), a critically endangered species that occupies a heterogeneous environment. We performed RNA-sequencing on ear tissue biopsies from adult male and female devils from three populations at the extremes of their geographic range. There were no transcriptome-wide patterns of differential gene expression that would be suggestive of significant, environmentally-driven transcriptomic responses. The general lack of transcriptome-wide variation in gene expression levels across the devil's geographic range is consistent with previous studies that documented low levels of genetic variation in the species. However, genes previously implicated in local adaptation to abiotic environment in devils were enriched for differentially expressed genes. Additionally, three modules of co-expressed genes were significantly associated with either population of origin or sex.
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Affiliation(s)
- Alexandra K Fraik
- School of Biological Sciences, Washington State University, Pullman, WA 99164, USA.
| | - Corey Quackenbush
- School of Biological Sciences, Washington State University, Pullman, WA 99164, USA.
| | - Mark J Margres
- School of Biological Sciences, Washington State University, Pullman, WA 99164, USA.
- Department of Biological Sciences, Clemson University, Clemson, SC 29634, USA.
| | - Sebastien Comte
- School of Natural Sciences, Hobart, TAS 7001, Australia.
- Vertebrate Pest Research Unit, NSW Department of Primary Industries, 1447 Forest Road, Orange, NSW 2800, Australia.
| | | | | | - Menna Jones
- School of Natural Sciences, Hobart, TAS 7001, Australia.
| | - Rodrigo Hamede
- School of Natural Sciences, Hobart, TAS 7001, Australia.
| | - Paul A Hohenlohe
- Department of Biological Sciences, University of Idaho, Institute for Bioinformatics and Evolutionary Studies, University of Idaho, 875 Perimeter Drive, Moscow, ID 83844, USA.
| | - Andrew Storfer
- Department of Biological Sciences, University of Idaho, Institute for Bioinformatics and Evolutionary Studies, University of Idaho, 875 Perimeter Drive, Moscow, ID 83844, USA.
| | - Joanna L Kelley
- Department of Biological Sciences, University of Idaho, Institute for Bioinformatics and Evolutionary Studies, University of Idaho, 875 Perimeter Drive, Moscow, ID 83844, USA.
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20
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Wang S, Xiang C, Mou L, Yang Y, Zhong R, Wang L, Sun C, Qin Z, Yang J, Qian J, Zhao Y, Wang Y, Pan X, Qie J, Jiang Y, Wang X, Yang Y, Zhou WP, Miao X, He F, Jin L, Wang H. Trans-acting non-synonymous variant of FOXA1 predisposes to hepatocellular carcinoma through modulating FOXA1-ERα transcriptional program and may have undergone natural selection. Carcinogenesis 2019; 41:146-158. [DOI: 10.1093/carcin/bgz136] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 06/26/2019] [Accepted: 07/30/2019] [Indexed: 12/18/2022] Open
Abstract
Abstract
Interplay of pioneer transcription factor forkhead box A1 (FOXA1) and estrogen receptor has been implicated in sexual dimorphism in hepatocellular carcinoma (HCC), but etiological relevance of its polymorphism was unknown. In the case control study (1152 patients versus1242 controls), we observed significant increase in HCC susceptibility in hepatitis B virus carriers associated with a non-synonymous Thr83Ala variant of FOXA1 (odds ratio [OR], 1.28; 95% confidence interval [CI], 1.11−1.48, for Ala83-containing genotype, after validation in an independent population with 933 patients versus 1030 controls), a tightly linked (CGC)5/6or7 repeat polymorphism at its promoter (OR 1.32; 95% CI 1.10–1.60, for (CGC)6or7-repeat-containing genotype), and their combined haplotype (OR 1.50; 95% CI 1.24–1.81, for (CGC)6or7−Ala83 haplotype). The susceptible FOXA1-Ala83 impairs its interaction with ERα, attenuates transactivation toward some of their dual target genes, such as type 1 iodothyronine deiodinase, UDP glucuronosyltransferase 2 family, polypeptide B17 and sodium/taurocholate cotransporting polypeptide, but correlates with strengthened cellular expression of α-fetoprotein (AFP) and elevated AFP serum concentration in HCC patients (n = 1096). The susceptible FOXA1 cis-variant with (CGC)6or7 repeat strengthens the binding to transcription factor early growth response 1 and enhances promoter activity and gene expression. Evolutionary population genetics analyses with public datasets reveal significant population differentiation and unique haplotype structure of the derived protective FOXA1-Thr83 and suggest that it may have undergone positive natural selection in Chinese population. These findings epidemiologically highlight the functional significance of FOXA1-ERα transcriptional program and regulatory network in liver cancer development.
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Affiliation(s)
- Sheng Wang
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences; Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Chan Xiang
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences; Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
- Department of Pathology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Lin Mou
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences; Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yuan Yang
- The Third Department of Hepatic Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Rong Zhong
- Department of Epidemiology and Biostatistics and State Key Laboratory of Environment Health (Incubation), Ministry of Education Key Laboratory of Environment and Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Liyan Wang
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences; Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Chang Sun
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences; Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Zhaoyu Qin
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences; Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jingmin Yang
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences; Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Ji Qian
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences; Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
- Fudan-Taizhou Institute of Health Sciences, Taizhou, Jiangsu, China
| | - Yuanyuan Zhao
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences; Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yi Wang
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences; Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Xuedong Pan
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences; Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jingbo Qie
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences; Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yan Jiang
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences; Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Xiaofeng Wang
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences; Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
- Fudan-Taizhou Institute of Health Sciences, Taizhou, Jiangsu, China
| | - Yajun Yang
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences; Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
- Fudan-Taizhou Institute of Health Sciences, Taizhou, Jiangsu, China
| | - Wei-Ping Zhou
- The Third Department of Hepatic Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Xiaoping Miao
- Department of Epidemiology and Biostatistics and State Key Laboratory of Environment Health (Incubation), Ministry of Education Key Laboratory of Environment and Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Fuchu He
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences; Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences, Beijing Institute of Lifeomics, Beijing, China
| | - Li Jin
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences; Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
- Fudan-Taizhou Institute of Health Sciences, Taizhou, Jiangsu, China
| | - Haijian Wang
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences; Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
- Fudan-Taizhou Institute of Health Sciences, Taizhou, Jiangsu, China
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21
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Coates M, Mariottoni P, Corcoran DL, Kirshner HF, Jaleel T, Brown DA, Brooks SR, Murray J, Morasso MI, MacLeod AS. The skin transcriptome in hidradenitis suppurativa uncovers an antimicrobial and sweat gland gene signature which has distinct overlap with wounded skin. PLoS One 2019; 14:e0216249. [PMID: 31059533 PMCID: PMC6502346 DOI: 10.1371/journal.pone.0216249] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 04/16/2019] [Indexed: 12/15/2022] Open
Abstract
Hidradenitis suppurativa (HS) is a debilitating chronic inflammatory skin disease resulting in non-healing wounds affecting body areas of high hair follicle and sweat gland density. The pathogenesis of HS is not well understood but appears to involve dysbiosis-driven aberrant activation of the innate immune system leading to excessive inflammation. Marked dysregulation of antimicrobial peptides and proteins (AMPs) in HS is observed, which may contribute to this sustained inflammation. Here, we analyzed HS skin transcriptomes from previously published studies and integrated these findings through a comparative analysis with a published wound healing data set and with immunofluorescence and qPCR analysis from new HS patient samples. Among the top differently expressed genes between lesional and non-lesional HS skin were members of the S100 family as well as dermcidin, the latter known as a sweat gland-associated AMP and one of the most downregulated genes in HS lesions. Interestingly, many genes associated with sweat gland function, such as secretoglobins and aquaporin 5, were decreased in HS lesional skin and we discovered that these genes demonstrated opposite expression profiles in healing skin. Conversely, HS lesional and wounded skin shared a common gene signature including genes encoding for S100 proteins, defensins, and genes encoding antiviral proteins. Overall, our results suggest that the pathogenesis of HS may be driven by changes in AMP expression and altered sweat gland function, and may share a similar pathology with chronic wounds.
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Affiliation(s)
- Margaret Coates
- Department of Dermatology, Duke University, Durham, NC, United States of America
| | - Paula Mariottoni
- Department of Dermatology, Duke University, Durham, NC, United States of America
| | - David L. Corcoran
- Duke Center for Genomic and Computational Biology, Duke University, Durham, NC, United States of America
| | - Hélène Fradin Kirshner
- Duke Center for Genomic and Computational Biology, Duke University, Durham, NC, United States of America
| | - Tarannum Jaleel
- Department of Dermatology, Duke University, Durham, NC, United States of America
| | - David A. Brown
- Department of Surgery, Duke University, Durham, NC, United States of America
| | - Stephen R. Brooks
- National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institute of Health, Bethesda, MD, United States of America
| | - John Murray
- Department of Dermatology, Duke University, Durham, NC, United States of America
| | - Maria I. Morasso
- National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institute of Health, Bethesda, MD, United States of America
| | - Amanda S. MacLeod
- Department of Dermatology, Duke University, Durham, NC, United States of America
- Department of Immunology, Duke University, Durham, NC, United States of America
- Pinnell Center for Investigative Dermatology, Duke University, Durham, NC, United States of America
- * E-mail:
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22
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Bovell DL. The evolution of eccrine sweat gland research towards developing a model for human sweat gland function. Exp Dermatol 2019; 27:544-550. [PMID: 29626846 DOI: 10.1111/exd.13556] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/02/2018] [Indexed: 12/30/2022]
Abstract
For several decades now, researchers, professional bodies, governments, and journals such as the journal of Experimental Dermatology have worked to reduce the number of animals used in experimentation. This review centres on investigations into how human sweat glands produce sweat and how that research has evolved over the years. It is hoped that this review will show that as methodologies advanced, sweat gland research has come to rely less and less on a variety of animal models as investigative tools and information is being primarily obtained through human and mouse material, with a view to further reductions in using animal models.
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Affiliation(s)
- Douglas L Bovell
- Department of Medical Education, Weill Cornell Medicine - Qatar, Doha, Qatar
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23
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Yao B, Xie J, Liu N, Hu T, Song W, Huang S, Fu X. Direct reprogramming of epidermal cells toward sweat gland-like cells by defined factors. Cell Death Dis 2019; 10:272. [PMID: 30894517 PMCID: PMC6426881 DOI: 10.1038/s41419-019-1503-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 02/19/2019] [Accepted: 02/26/2019] [Indexed: 02/04/2023]
Abstract
Several studies have reported inducing adult cells into sweat gland-like cells; however, slow transition and low efficiency limit the potential for cell-based treatment. Here, we show that overexpression of the transcription factor FoxC1 was sufficient to reprogram epidermal cells to induced functional sweat gland-like cells (iSGCs). The iSGCs expressing secreting-related genes, had a global gene expression profile between fetal SGCs (P5) and adult SGCs (P28). Moreover, iSGCs transplanted into the burn mice model facilitated wound repair and sweat gland regeneration. We further demonstrated that the Foxc1 upregulated BMP5 transcription and BMP5 is responsible for the cell-type transition. Collectively, this study shows that lineage reprogramming of epidermal cells into iSGCs provides an excellent cell source and a promising regenerative strategy for anhidrosis and hypohidrosis.
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Affiliation(s)
- Bin Yao
- Wound Healing and Cell Biology Laboratory, Institute of Basic Medical Sciences, General Hospital of PLA, Beijing, 100853, P.R. China.,Key Laboratory of Tissue Repair and Regeneration of PLA, and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, Fourth Medical Center of PLA General Hospital, Beijing, 100048, P.R. China
| | - Jiangfan Xie
- Burn Department of the First People's Hospital of Zhengzhou City, Zhengzhou, 450004, P.R. China
| | - Nanbo Liu
- Department of Cardiac Surgery, Affiliated South China Hospital, Southern Medical University (Guangdong Province People's Hospital), Guangzhou, 510515, P.R. China
| | - Tian Hu
- Wound Healing and Cell Biology Laboratory, Institute of Basic Medical Sciences, General Hospital of PLA, Beijing, 100853, P.R. China.,School of Medicine, Nankai University, Tianjin, 300052, P.R. China
| | - Wei Song
- Key Laboratory of Tissue Repair and Regeneration of PLA, and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, Fourth Medical Center of PLA General Hospital, Beijing, 100048, P.R. China
| | - Sha Huang
- Wound Healing and Cell Biology Laboratory, Institute of Basic Medical Sciences, General Hospital of PLA, Beijing, 100853, P.R. China.
| | - Xiaobing Fu
- Wound Healing and Cell Biology Laboratory, Institute of Basic Medical Sciences, General Hospital of PLA, Beijing, 100853, P.R. China. .,Key Laboratory of Tissue Repair and Regeneration of PLA, and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, Fourth Medical Center of PLA General Hospital, Beijing, 100048, P.R. China.
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24
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Li H, Chen L, Zhang M, Xie S, Zhang C. Detection of fluid secretion of three-dimensional reconstructed eccrine sweat glands by magnetic resonance imaging. Exp Dermatol 2019; 28:53-58. [PMID: 30390354 DOI: 10.1111/exd.13833] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 10/29/2018] [Accepted: 11/01/2018] [Indexed: 02/05/2023]
Abstract
We previously showed three-dimensional (3D) reconstructed eccrine sweat glands have similar structures as native eccrine sweat glands, but whether the 3D reconstructed sweat glands appropriately secrete fluid is still unknown. In this study, Matrigel-embedded human eccrine sweat gland cells or Matrigel alone were implanted into the groin subcutis of the nude mice. Ten weeks post-implantation, images of the subcutaneously formed plugs, as well as footpads of rats, pre- and post-pilocarpine/normal saline (NS) injection were acquired using a fat-suppressed proton density-weighted magnetic resonance imaging (MRI) sequence at 7.0 T, and the regions of interest (ROIs) in plugs and rat footpads were analysed and graphed. A significant increase in the ROI mean proton intensity occurred in both 3D reconstructed and native eccrine sweat glands after pilocarpine injection. The mean proton intensity had no noticeable changes in ROIs of Matrigel plugs between pre- and post-pilocarpine injection, and in ROIs of rat footpads between pre- and post-NS injection. In conclusion, the 3D reconstructed sweat glands possess fluid secretion, which is detectable by fat-suppressed proton density-weighted MRI.
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Affiliation(s)
- Haihong Li
- Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong Province, China
| | - Liyun Chen
- Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong Province, China
| | - Mingjun Zhang
- Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong Province, China
| | - Sitian Xie
- Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong Province, China
| | - Cuiping Zhang
- Wound Healing and Cell Biology Laboratory, The First Affiliated Hospital, General Hospital of the Chinese People's Liberation Army, Beijing, China
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25
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Zhang M, Li H, Xie S, Chen L. Time course of differentiation of different cell types in 3D-reconstructed eccrine sweat glands. J Mol Histol 2018; 49:567-575. [PMID: 30238337 DOI: 10.1007/s10735-018-9795-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 09/17/2018] [Indexed: 02/05/2023]
Abstract
Epidermal basal cells invaginate into the dermis to form sweat ducts, which then grow downwards further to form secretory coils during the ontogenesis of eccrine sweat glands, but the time course of differentiation of different cell types in 3D-reconstructed eccrine sweat glands remain unclear. In this study, secretory cell-specific marker K7, clear secretory cell-specific marker CA II, dark secretory cell-specific marker GCDFP-15, myoepithelial cell-specific marker α-SMA, inner duct cell-specific marker S100P and outer duct cell-specific marker S100A2 were detected by immunofluorescence staining. The results showed that S100P and S100A2 were first detected at 2 weeks post implantation, K7 and α-SMA at 3 weeks, and GCDFP-15 and CA II at 4 weeks. The differentiation of ducts preceded secretory coils in 3D-reconstructed eccrine sweat glands. After 8 weeks post implantation, the distribution of these markers in 3D-reconstructed eccrine sweat glands was similar to that in native ones, and the percentage of the 3D-reconstructed glands expressing these markers maintained steady. We conclude that although the 3D-reconstructed and native eccrine sweat glands originated from different cells, the differentiation of different cell types in 3D-reconstructed eccrine sweat glands parallels the sequence observed during embryonic development.
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Affiliation(s)
- Mingjun Zhang
- Department of Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, North Dongxia Road, Shantou, 515041, Guangdong, China
| | - Haihong Li
- Department of Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, North Dongxia Road, Shantou, 515041, Guangdong, China.
| | - Sitian Xie
- Department of Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, North Dongxia Road, Shantou, 515041, Guangdong, China
| | - Liyun Chen
- Department of Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, North Dongxia Road, Shantou, 515041, Guangdong, China
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26
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Li H, Chen L, Zhang M, Xie S, Cheng L. Expression and localization of Forkhead transcription factor A1 in the three-dimensional reconstructed eccrine sweat glands. Acta Histochem 2018; 120:520-524. [PMID: 29909922 DOI: 10.1016/j.acthis.2018.06.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 05/24/2018] [Accepted: 06/11/2018] [Indexed: 02/05/2023]
Abstract
Previously studies showed that Forkhead transcription factor A1 (FoxA1) was associated with sweat secretion. To investigate the expression and localization of FoxA1 in the three-dimensional (3D) reconstructed eccrine sweat glands, eccrine sweat gland cells were transplanted subcutaneously into nude mice with Matrigel, and at 2, 3, 4, 5, 6, 8, 10 and 12 weeks post-transplantation, the reconstructed eccrine sweat glands were removed and immunostained for FoxA1 and co-immunostained for FoxA1 and eccrine sweat markers, K7, carbonic anhydrase II (CA Ⅱ), gross cystic disease fluid protein-15 (GCDFP-15) and α-smooth muscle actin (α-SMA), and FoxA1 and sweat secretion-related proteins, Na+-K+-ATPase α and Na+-K+-2Cl- cotransporter 1 (NKCC1). The results showed that FoxA1-positive cells weren't detected until 3 weeks post-implantation, a time point of the differntiation of secretory coil-like structures. From the fourth week on, the number of FoxA1-positive cells increased and thereafter maintained at a high number. Double immunofluorescence staining showed that FoxA1-positive cells co-expressed dark cell marker GCDFP-15 and myoepithelial cell marker α-SMA, as well as secretion-related proteins, Na+-K+-ATPase α and NKCC1 in both the native and reconstructed eccrine sweat glands. In conclusion, FoxA1 might be related to the development and differentiation of secretory coil-like structures, as well as the secretory function of the 3D reconstructed eccrine sweat glands.
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Affiliation(s)
- Haihong Li
- Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, North Dongxia Road, Shantou, 515041, Guangdong Province, China; Research Center for Translational Medicine, Shantou University Medical College, North Dongxia Road, Shantou, 515041, Guangdong Province, China.
| | - Liyun Chen
- Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, North Dongxia Road, Shantou, 515041, Guangdong Province, China
| | - Mingjun Zhang
- Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, North Dongxia Road, Shantou, 515041, Guangdong Province, China
| | - Sitian Xie
- Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, North Dongxia Road, Shantou, 515041, Guangdong Province, China
| | - Liuhanghang Cheng
- Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, North Dongxia Road, Shantou, 515041, Guangdong Province, China
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27
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Hu Y, Converse C, Lyons MC, Hsu WH. Neural control of sweat secretion: a review. Br J Dermatol 2018; 178:1246-1256. [PMID: 28714085 DOI: 10.1111/bjd.15808] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/11/2017] [Indexed: 12/19/2022]
Abstract
BACKGROUND Humans have 4 million exocrine sweat glands, which can be classified into two types: eccrine and apocrine glands. Sweat secretion, a constitutive feature, is directly involved in thermoregulation and metabolism, and is regulated by both the central nervous system (CNS) and autonomic nervous system (ANS). OBJECTIVES To explore how sweat secretion is controlled by both the CNS and the ANS and the mechanisms behind the neural control of sweat secretion. METHODS We conducted a literature search on PubMed for reports in English from 1 January 1950 to 31 December 2016. RESULTS AND CONCLUSIONS Acetylcholine acts as a potent stimulator for sweat secretion, which is released by sympathetic nerves. β-adrenoceptors are found in adipocytes as well as apocrine glands, and these receptors may mediate lipid secretion from apocrine glands for sweat secretion. The activation of β-adrenoceptors could increase sweat secretion through opening of Ca2+ channels to elevate intracellular Ca2+ concentration. Ca2+ and cyclic adenosine monophosphate play a part in the secretion of lipids and proteins from apocrine glands for sweat secretion. The translocation of aquaporin 5 plays an important role in sweat secretion from eccrine glands. Dysfunction of the ANS, especially the sympathetic nervous system, may cause sweating disorders, such as hypohidrosis and hyperhidrosis.
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Affiliation(s)
- Y Hu
- Department of Biomedical Sciences, Iowa State University, 1800 S. 16th Street, Ames, IA, 50011-1250, U.S.A
| | - C Converse
- Department of Biomedical Sciences, Iowa State University, 1800 S. 16th Street, Ames, IA, 50011-1250, U.S.A
| | - M C Lyons
- Department of Biomedical Sciences, Iowa State University, 1800 S. 16th Street, Ames, IA, 50011-1250, U.S.A
| | - W H Hsu
- Department of Biomedical Sciences, Iowa State University, 1800 S. 16th Street, Ames, IA, 50011-1250, U.S.A
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28
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Marmorstein AD, Johnson AA, Bachman LA, Andrews-Pfannkoch C, Knudsen T, Gilles BJ, Hill M, Gandhi JK, Marmorstein LY, Pulido JS. Mutant Best1 Expression and Impaired Phagocytosis in an iPSC Model of Autosomal Recessive Bestrophinopathy. Sci Rep 2018. [PMID: 29540715 PMCID: PMC5852082 DOI: 10.1038/s41598-018-21651-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Autosomal recessive bestrophinopathy (ARB) is caused by mutations in the gene BEST1 which encodes bestrophin 1 (Best1), an anion channel expressed in retinal pigment epithelial (RPE) cells. It has been hypothesized that ARB represents the human null phenotype for BEST1 and that this occurs due to nonsense mediated decay (NMD). To test this hypothesis, we generated induced pluripotent stem cells (iPSCs) from a patient with ARB and her parents. After differentiation to retinal pigment epithelial (iPSC-RPE) cells, both BEST1 mRNA and Best1 protein expression were compared to controls. BEST1 mRNA expression levels, determined by quantitative PCR, were similar in ARB iPSC-RPE, parental cells, and genetically unrelated controls. Western blotting revealed that CRALBP and RPE65 were expressed within the range delineated by unrelated controls in iPSC-RPE from the ARB donor and her parents. Best1 protein was detected in different clones of ARB iPSC-RPE, but at reduced levels compared to all controls. When tested for the ability to phagocytose photoreceptor outer segments, ARB iPSC-RPE exhibited impaired internalization. These data suggest that impaired phagocytosis is a trait common to the bestrophinopathies. Furthermore, ARB is not universally the result of NMD and ARB, in this patient, is not due to the absence of Best1.
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Affiliation(s)
- Alan D Marmorstein
- Department of Ophthalmology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA.
| | - Adiv A Johnson
- Department of Ophthalmology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA
| | - Lori A Bachman
- Department of Ophthalmology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA
| | | | - Travis Knudsen
- Department of Ophthalmology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA
| | - Benjamin J Gilles
- Department of Ophthalmology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA
| | - Matthew Hill
- Department of Ophthalmology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA
| | - Jarel K Gandhi
- Department of Ophthalmology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA
| | - Lihua Y Marmorstein
- Department of Ophthalmology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA
| | - Jose S Pulido
- Department of Ophthalmology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA
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Fujii N, McNeely BD, Zhang SY, Abdellaoui YC, Danquah MO, Kenny GP. Activation of protease-activated receptor 2 mediates cutaneous vasodilatation but not sweating: roles of nitric oxide synthase and cyclo-oxygenase. Exp Physiol 2018; 102:265-272. [PMID: 27981668 DOI: 10.1113/ep086092] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 12/05/2016] [Indexed: 11/08/2022]
Abstract
NEW FINDINGS What is the central question of this study? Protease-activated receptor 2 (PAR2) is located in the endothelial cells of skin vessels and eccrine sweat glands. However, a functional role of PAR2 in the control of cutaneous blood flow and sweating remains to be assessed in humans in vivo. What is the main finding and its importance? Our results demonstrate that in normothermic resting humans in vivo, activation of PAR2 elicits cutaneous vasodilatation partly through nitric oxide synthase-dependent mechanisms, but does not mediate sweating. These results provide important new insights into the physiological significance of PAR2 in human skin. Protease-activated receptor 2 (PAR2) is present in human skin, including keratinocytes, endothelial cells of skin microvessels and eccrine sweat glands. However, whether PAR2 contributes functionally to the regulation of cutaneous blood flow and sweating remains entirely unclear in humans in vivo. We hypothesized that activation of PAR2 directly stimulates cutaneous vasodilatation and sweating via actions of nitric oxide synthase (NOS) and cyclo-oxygenase (COX). In 12 physically active young men (29 ± 5 years old), cutaneous vascular conductance (CVC) and sweat rate were measured at four intradermal microdialysis forearm skin sites that were treated with the following: (i) lactated Ringer's solution (control); (ii) 10 mm NG -nitro-l-arginine (NOS inhibitor); (iii) 10 mm ketorolac (COX inhibitor); or (iv) a combination of both inhibitors. At all sites, a PAR2 agonist (SLIGKV-NH2 ) was co-administered in a dose-dependent fashion (0.06, 0.18, 0.55, 1.66 and 5 mm, each for 25 min). The highest dose of SLIGKV-NH2 (5 mm) increased CVC from baseline at the control site (P ≤ 0.05). This increase in CVC associated with PAR2 activation was attenuated by NOS inhibition regardless of the presence or absence of simultaneous COX inhibition (both P ≤ 0.05). However, COX inhibition alone did not affect the PAR2-mediated increase in CVC (P > 0.05). No increase in sweat rate was measured at any administered dose of SLIGKV-NH2 (all P > 0.05). We show that in normothermic resting humans in vivo, PAR2 activation does not increase sweat rate, whereas it does modulate cutaneous vasodilatation through NOS-dependent mechanisms.
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Affiliation(s)
- Naoto Fujii
- Human and Environmental Physiology Research Unit, University of Ottawa, Ottawa, Ontario, Canada
| | - Brendan D McNeely
- Human and Environmental Physiology Research Unit, University of Ottawa, Ottawa, Ontario, Canada
| | - Sarah Y Zhang
- Human and Environmental Physiology Research Unit, University of Ottawa, Ottawa, Ontario, Canada
| | - Yasmine C Abdellaoui
- Human and Environmental Physiology Research Unit, University of Ottawa, Ottawa, Ontario, Canada
| | - Mercy O Danquah
- Human and Environmental Physiology Research Unit, University of Ottawa, Ottawa, Ontario, Canada
| | - Glen P Kenny
- Human and Environmental Physiology Research Unit, University of Ottawa, Ottawa, Ontario, Canada
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Abstract
In humans, sweating is the most powerful autonomic thermoeffector. The evaporation of sweat provides by far the greatest potential for heat loss and it represents the only means of heat loss when air temperature exceeds skin temperature. Sweat production results from the integration of afferent neural information from peripheral and central thermoreceptors which leads to an increase in skin sympathetic nerve activity. At the neuroglandular junction, acetylcholine is released and binds to muscarinic receptors which stimulate the secretion of a primary fluid by the secretory coil of eccrine glands. The primary fluid subsequently travels through a duct where ions are reabsorbed. The end result is the expulsion of hypotonic sweat on to the skin surface. Sweating increases in proportion with the intensity of the thermal challenge in an attempt of the body to attain heat balance and maintain a stable internal body temperature. The control of sweating can be modified by biophysical factors, heat acclimation, dehydration, and nonthermal factors. The purpose of this article is to review the role of sweating as a heat loss thermoeffector in humans.
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31
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Klaka P, Grüdl S, Banowski B, Giesen M, Sättler A, Proksch P, Welss T, Förster T. A novel organotypic 3D sweat gland model with physiological functionality. PLoS One 2017; 12:e0182752. [PMID: 28796813 PMCID: PMC5552089 DOI: 10.1371/journal.pone.0182752] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 07/23/2017] [Indexed: 11/18/2022] Open
Abstract
Dysregulated human eccrine sweat glands can negatively impact the quality-of-life of people suffering from disorders like hyperhidrosis. Inability of sweating can even result in serious health effects in humans affected by anhidrosis. The underlying mechanisms must be elucidated and a reliable in vitro test system for drug screening must be developed. Here we describe a novel organotypic three-dimensional (3D) sweat gland model made of primary human eccrine sweat gland cells. Initial experiments revealed that eccrine sweat gland cells in a two-dimensional (2D) culture lose typical physiological markers. To resemble the in vivo situation as close as possible, we applied the hanging drop cultivation technology regaining most of the markers when cultured in its natural spherical environment. To compare the organotypic 3D sweat gland model versus human sweat glands in vivo, we compared markers relevant for the eccrine sweat gland using transcriptomic and proteomic analysis. Comparing the marker profile, a high in vitro-in vivo correlation was shown. Carcinoembryonic antigen-related cell adhesion molecule 5 (CEACAM5), muscarinic acetylcholine receptor M3 (CHRM3), Na+-K+-Cl- cotransporter 1 (NKCC1), calcium-activated chloride channel anoctamin-1 (ANO1/TMEM16A), and aquaporin-5 (AQP5) are found at significant expression levels in the 3D model. Moreover, cholinergic stimulation with acetylcholine or pilocarpine leads to calcium influx monitored in a calcium flux assay. Cholinergic stimulation cannot be achieved with the sweat gland cell line NCL-SG3 used as a sweat gland model system. Our results show clear benefits of the organotypic 3D sweat gland model versus 2D cultures in terms of the expression of essential eccrine sweat gland key regulators and in the physiological response to stimulation. Taken together, this novel organotypic 3D sweat gland model shows a good in vitro-in vivo correlation and is an appropriate alternative for screening of potential bioactives regulating the sweat mechanism.
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Affiliation(s)
- Patricia Klaka
- Henkel AG & Co. KGaA, Düsseldorf, Germany
- * E-mail: (PK); (TW)
| | | | | | | | | | - Peter Proksch
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-University, Düsseldorf, Germany
| | - Thomas Welss
- Henkel AG & Co. KGaA, Düsseldorf, Germany
- * E-mail: (PK); (TW)
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Sano K, Asahina M, Uehara T, Matsumoto K, Araki N, Okuyama R. Degranulation and shrinkage of dark cells in eccrine glands and elevated serum carcinoembryonic antigen in patients with acquired idiopathic generalized anhidrosis. J Eur Acad Dermatol Venereol 2017; 31:2097-2103. [PMID: 28662305 DOI: 10.1111/jdv.14443] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Accepted: 06/13/2017] [Indexed: 01/26/2023]
Abstract
BACKGROUND Acquired idiopathic generalized anhidrosis (AIGA) is characterized by anhidrosis/hypohidrosis without other autonomic and neurological dysfunctions. Pathologically, AIGA is considered to usually present no significant morphological alterations in eccrine glands, the secretory portion which consists of clear cells, dark cells, and myoepithelial cells. AIGA patients recently have been reported to show high serum concentrations of carcinoembryonic antigen (CEA). OBJECTIVE Our aim is to reveal morphological abnormalities of dark cells and investigate their relationship with serum CEA. METHODS We performed comparative analysis of eccrine glands between sweat-preserved and non-sweating skin in four AIGA patients. Serum CEA concentrations in 22 cases with AIGA were measured with healthy volunteers. Furthermore, we semiquantitatively investigated dermcidin, FoxA1 and CEA expression in eccrine glands of 12 cases with AIGA and 5 cases with non-AIGA. RESULTS Marked degranulation and shrinkage of dark cells consistently occurred in AIGA. Furthermore, high serum CEA concentrations were found in 14 of 22 AIGA patients (over 60%), but serum CEA levels were not correlated with CEA expression in eccrine glands. Dermcidin expression in dark cells apparently decreased in AIGA patients, severely in those with high serum CEA and moderately in those with low serum CEA, while well-preserved expression was found in non-AIGA subjects. CONCLUSION Our study suggests morphological damage and molecular dysregulation of dark cells, leading to impairment of their functions in AIGA patients. Severely damaged dark cells correspond to high serum CEA. Accordingly, these pathological changes in eccrine dark cells may be involved in anhidrosis/hypohidrosis of AIGA.
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Affiliation(s)
- K Sano
- Department of Laboratory Medicine, Shinshu University Hospital, Nagano, Japan
| | - M Asahina
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - T Uehara
- Department of Laboratory Medicine, Shinshu University Hospital, Nagano, Japan
| | - K Matsumoto
- Department of Dermatology, School of Medicine, Shinshu University, Nagano, Japan
| | - N Araki
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - R Okuyama
- Department of Dermatology, School of Medicine, Shinshu University, Nagano, Japan
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Li H, Chen L, Zhang M, Zhang B. Cells in 3D-reconstitutued eccrine sweat gland cell spheroids differentiate into gross cystic disease fluid protein 15-expressing dark secretory cells and carbonic anhydrase II-expressing clear secretory cells. Acta Histochem 2017; 119:620-623. [PMID: 28689642 DOI: 10.1016/j.acthis.2017.07.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 07/01/2017] [Accepted: 07/03/2017] [Indexed: 02/05/2023]
Abstract
Secretory coils of eccrine sweat glands are composed of myoepithelial cells, dark secretory cells and clear secretory cells. The two types of cells play important roles in sweat secretion. In our previous study, we demonstrated that the 3D-reconstituted eccrine sweat gland cell spheroids differentiate into secretory coil-like structures. However, whether the secretory coil-like structures further differentiate into dark secretory cells and clear secretory cells were is still unknown. In this study, we detected the differentiation of clear and dark secretory cells in the 3D-reconstituted eccrine sweat gland cell spheroids using the dark secretory cell-specific marker, GCDFP-15, and clear secretory cell-specific marker, CAII by immunofluorescence staining. Results showed that there were both GCDFP-15- and CAII-expressing cells in 12-week-old 3D spheroids, similar to native eccrine sweat glands, indicating that the spheroids possess a cellular structure capable of sweat secretion. We conclude that the 12-week 3D spheroids may have secretory capability.
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Affiliation(s)
- Haihong Li
- Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, North Dongxia Road, Shantou 515041, Guangdong Province, China; Research Center for Translational Medicine, Shantou University Medical College, North Dongxia Road, Shantou 515041, Guangdong Province, China.
| | - Liyun Chen
- Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, North Dongxia Road, Shantou 515041, Guangdong Province, China
| | - Mingjun Zhang
- Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, North Dongxia Road, Shantou 515041, Guangdong Province, China
| | - Bingna Zhang
- Research Center for Translational Medicine, Shantou University Medical College, North Dongxia Road, Shantou 515041, Guangdong Province, China
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34
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Shih BB, Nirmal AJ, Headon DJ, Akbar AN, Mabbott NA, Freeman TC. Derivation of marker gene signatures from human skin and their use in the interpretation of the transcriptional changes associated with dermatological disorders. J Pathol 2017; 241:600-613. [PMID: 28008606 PMCID: PMC5363360 DOI: 10.1002/path.4864] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 11/18/2016] [Accepted: 12/19/2016] [Indexed: 12/26/2022]
Abstract
Numerous studies have explored the altered transcriptional landscape associated with skin diseases to understand the nature of these disorders. However, data interpretation represents a significant challenge due to a lack of good maker sets for many of the specialized cell types that make up this tissue, whose composition may fundamentally alter during disease. Here we have sought to derive expression signatures that define the various cell types and structures that make up human skin, and demonstrate how they can be used to aid the interpretation of transcriptomic data derived from this organ. Two large normal skin transcriptomic datasets were identified, one RNA-seq (n = 578), the other microarray (n = 165), quality controlled and subjected separately to network-based analyses to identify clusters of robustly co-expressed genes. The biological significance of these clusters was then assigned using a combination of bioinformatics analyses, literature, and expert review. After cross comparison between analyses, 20 gene signatures were defined. These included expression signatures for hair follicles, glands (sebaceous, sweat, apocrine), keratinocytes, melanocytes, endothelia, muscle, adipocytes, immune cells, and a number of pathway systems. Collectively, we have named this resource SkinSig. SkinSig was then used in the analysis of transcriptomic datasets for 18 skin conditions, providing in-context interpretation of these data. For instance, conventional analysis has shown there to be a decrease in keratinization and fatty metabolism with age; we more accurately define these changes to be due to loss of hair follicles and sebaceous glands. SkinSig also highlighted the over-/under-representation of various cell types in skin diseases, reflecting an influx in immune cells in inflammatory disorders and a relative reduction in other cell types. Overall, our analyses demonstrate the value of this new resource in defining the functional profile of skin cell types and appendages, and in improving the interpretation of disease data. © 2016 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Barbara B Shih
- The Roslin Institute and Royal (Dick) School of Veterinary StudiesUniversity of Edinburgh, Easter BushMidlothianEdinburghEH25 9RGUK
| | - Ajit J Nirmal
- The Roslin Institute and Royal (Dick) School of Veterinary StudiesUniversity of Edinburgh, Easter BushMidlothianEdinburghEH25 9RGUK
| | - Denis J Headon
- The Roslin Institute and Royal (Dick) School of Veterinary StudiesUniversity of Edinburgh, Easter BushMidlothianEdinburghEH25 9RGUK
| | - Arne N Akbar
- Division of Infection and ImmunityUniversity College London90 Gower StreetLondonWC1E 6BTUK
| | - Neil A Mabbott
- The Roslin Institute and Royal (Dick) School of Veterinary StudiesUniversity of Edinburgh, Easter BushMidlothianEdinburghEH25 9RGUK
| | - Tom C Freeman
- The Roslin Institute and Royal (Dick) School of Veterinary StudiesUniversity of Edinburgh, Easter BushMidlothianEdinburghEH25 9RGUK
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35
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Cui C, Schlessinger D. Neuropeptide
PACAP
promotes sweat secretion. Br J Dermatol 2017; 176:295-296. [DOI: 10.1111/bjd.15162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- C.‐Y. Cui
- Laboratory of Genetics and Genomics National Institute on Aging National Institutes of Health 251 Bayview Blvd, Suite 100 Baltimore MD 21224 U.S.A
| | - D. Schlessinger
- Laboratory of Genetics and Genomics National Institute on Aging National Institutes of Health 251 Bayview Blvd, Suite 100 Baltimore MD 21224 U.S.A
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Li H, Chen L, Zhang M, Zhang B. Foxa1 gene and protein in developing rat eccrine sweat glands. J Mol Histol 2017; 48:1-7. [PMID: 27787633 DOI: 10.1007/s10735-016-9700-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 10/19/2016] [Indexed: 02/05/2023]
Abstract
To investigate the development of eccrine sweat glands and the expression of Foxa1 genes and proteins in the course of development, the footpads from E15.5 to E21.5, P1-P12, P14, P21, P28 and P56 rats were subjected to immunofluorescence staining of FoxA1 and double immunofluorescence staining of K14/α-SMA, FoxA1/K7 and FoxA1/α-SMA, and were processed for Foxa1 gene detection by RT-qPCR. The results showed that rat eccrine sweat gland germs was first observed emerging from the basal layer of epidermis at E19.5, and then elongated downward into the dermis, forming straight ducts by E21.5. Early development of the secretory segments appeared at P1. The Foxa1 gene was not expressed in rat footpads until P2, but from P2 to P5, its expression up-regulated sharply, and thereafter maintained at a high level until adulthood. FoxA1 protein was first observed at P6 in eccrine sweat glands, four days after initial detection of Foxa1 gene transcripts. In skin, FoxA1-positive cells were present exclusively in secretory coils, with 95% being K7-positive secretory cells and 5% being α-SMA-positive myoepithelial cells. We conclude that Foxa1 can be used as a marker of eccrine sweat glands in skin and also as a marker of secretory coils, and Foxa1 is related to the development of secretory coils.
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Affiliation(s)
- Haihong Li
- Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, North Dongxia Road, Shantou, 515041, Guangdong Province, China.
- Research Center for Translational Medicine, Shantou University Medical College, North Dongxia Road, Shantou, 515041, Guangdong Province, China.
| | - Liyun Chen
- Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, North Dongxia Road, Shantou, 515041, Guangdong Province, China
| | - Mingjun Zhang
- Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, North Dongxia Road, Shantou, 515041, Guangdong Province, China
| | - Bingna Zhang
- Research Center for Translational Medicine, Shantou University Medical College, North Dongxia Road, Shantou, 515041, Guangdong Province, China
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Johnson AA, Guziewicz KE, Lee CJ, Kalathur RC, Pulido JS, Marmorstein LY, Marmorstein AD. Bestrophin 1 and retinal disease. Prog Retin Eye Res 2017; 58:45-69. [PMID: 28153808 DOI: 10.1016/j.preteyeres.2017.01.006] [Citation(s) in RCA: 141] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 01/23/2017] [Accepted: 01/25/2017] [Indexed: 12/18/2022]
Abstract
Mutations in the gene BEST1 are causally associated with as many as five clinically distinct retinal degenerative diseases, which are collectively referred to as the "bestrophinopathies". These five associated diseases are: Best vitelliform macular dystrophy, autosomal recessive bestrophinopathy, adult-onset vitelliform macular dystrophy, autosomal dominant vitreoretinochoroidopathy, and retinitis pigmentosa. The most common of these is Best vitelliform macular dystrophy. Bestrophin 1 (Best1), the protein encoded by the gene BEST1, has been the subject of a great deal of research since it was first identified nearly two decades ago. Today we know that Best1 functions as both a pentameric anion channel and a regulator of intracellular Ca2+ signaling. Best1 is an integral membrane protein which, within the eye, is uniquely expressed in the retinal pigment epithelium where it predominantly localizes to the basolateral plasma membrane. Within the brain, Best1 expression has been documented in both glial cells and astrocytes where it functions in both tonic GABA release and glutamate transport. The crystal structure of Best1 has revealed critical information about how Best1 functions as an ion channel and how Ca2+ regulates that function. Studies using animal models have led to critical insights into the physiological roles of Best1 and advances in stem cell technology have allowed for the development of patient-derived, "disease in a dish" models. In this article we review our knowledge of Best1 and discuss prospects for near-term clinical trials to test therapies for the bestrophinopathies, a currently incurable and untreatable set of diseases.
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Affiliation(s)
- Adiv A Johnson
- Department of Ophthalmology, Mayo Clinic, Rochester, MN, USA; Nikon Instruments, Melville, NY, USA
| | - Karina E Guziewicz
- Department of Clinical Studies-Philadelphia, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - C Justin Lee
- Center for Neuroscience and Functional Connectomics, Brain Science Institute, Korea Institute of Science and Technology, Seoul, South Korea
| | - Ravi C Kalathur
- New York Structural Biology Center, New York Consortium on Membrane Protein Structure, New York, NY, USA
| | - Jose S Pulido
- Department of Ophthalmology, Mayo Clinic, Rochester, MN, USA
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Sasaki S, Watanabe J, Ohtaki H, Matsumoto M, Murai N, Nakamachi T, Hannibal J, Fahrenkrug J, Hashimoto H, Watanabe H, Sueki H, Honda K, Miyazaki A, Shioda S. Pituitary adenylate cyclase‐activating polypeptide promotes eccrine gland sweat secretion. Br J Dermatol 2017; 176:413-422. [DOI: 10.1111/bjd.14885] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/13/2016] [Indexed: 11/29/2022]
Affiliation(s)
- S. Sasaki
- Department of Biochemistry Showa University School of Medicine Tokyo Japan
- Department of Dermatology Showa University School of Medicine Tokyo Japan
| | - J. Watanabe
- Centre for Biotechnology Showa University Tokyo Japan
| | - H. Ohtaki
- Department of Anatomy Showa University School of Medicine Tokyo Japan
| | - M. Matsumoto
- Department of Biochemistry Showa University School of Medicine Tokyo Japan
| | - N. Murai
- Department of Physiology Showa University School of Medicine Tokyo Japan
| | - T. Nakamachi
- Laboratory of Regulatory Biology Graduate School of Science and Engineering University of Toyama Toyama Japan
| | - J. Hannibal
- Department of Clinical Biochemistry Faculty of Health and Medical Science Bispebjerg Hospital University of Copenhagen Copenhagen Denmark
| | - J. Fahrenkrug
- Department of Clinical Biochemistry Faculty of Health and Medical Science Bispebjerg Hospital University of Copenhagen Copenhagen Denmark
| | - H. Hashimoto
- Laboratory of Molecular Neuropharmacology Graduate School of Pharmaceutical Sciences Osaka University Osaka Japan
- iPS Cell‐based Research Project on Brain Neuropharmacology and Toxicology Graduate School of Pharmaceutical Sciences Osaka University Osaka Japan
- Molecular Research Centre for Children's Mental Development United Graduate School of Child Development Osaka University Kanazawa University Hamamatsu University School of Medicine Chiba University and University of Fukui Osaka Japan
| | - H. Watanabe
- Department of Dermatology Showa University School of Medicine Tokyo Japan
| | - H. Sueki
- Department of Dermatology Showa University School of Medicine Tokyo Japan
| | - K. Honda
- Department of Anatomy Showa University School of Medicine Tokyo Japan
| | - A. Miyazaki
- Department of Biochemistry Showa University School of Medicine Tokyo Japan
| | - S. Shioda
- Department of Neuropeptide Drug Discovery Hoshi University School of Pharmacy and Pharmaceutical Sciences Ebara 2‐4‐41 Shinagawa‐ku, Tokyo 142‐8501 Japan
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Concepcion AR, Feske S. Regulation of epithelial ion transport in exocrine glands by store-operated Ca 2+ entry. Cell Calcium 2016; 63:53-59. [PMID: 28027799 DOI: 10.1016/j.ceca.2016.12.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Accepted: 12/17/2016] [Indexed: 02/08/2023]
Abstract
Store-operated Ca2+ entry (SOCE) is a conserved mechanism of Ca2+ influx that regulates Ca2+ signaling in many cell types. SOCE is activated by depletion of endoplasmic reticulum (ER) Ca2+ stores in response to physiological agonist stimulation. After it was first postulated by J.W. Putney Jr. in 1986, SOCE has been described in a large number of non-excitable cell types including secretory cells of different exocrine glands. Here we discuss the mechanisms by which SOCE controls salt and fluid secretion in exocrine glands, with a special focus on eccrine sweat glands. In sweat glands, SOCE plays an important, non-redundant role in regulating the function of Ca2+-activated Cl- channels (CaCC), Cl- secretion and sweat production. In the absence of key regulators of SOCE such as the CRAC channel pore subunit ORAI1 and its activator STIM1, the Ca2+-activated chloride channel TMEM16A is inactive and fails to secrete Cl-, resulting in anhidrosis in mice and human patients.
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Affiliation(s)
- Axel R Concepcion
- Department of Pathology, New York University School of Medicine, New York, NY, 10016, USA
| | - Stefan Feske
- Department of Pathology, New York University School of Medicine, New York, NY, 10016, USA.
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40
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Concepcion AR, Vaeth M, Wagner LE, Eckstein M, Hecht L, Yang J, Crottes D, Seidl M, Shin HP, Weidinger C, Cameron S, Turvey SE, Issekutz T, Meyts I, Lacruz RS, Cuk M, Yule DI, Feske S. Store-operated Ca2+ entry regulates Ca2+-activated chloride channels and eccrine sweat gland function. J Clin Invest 2016; 126:4303-4318. [PMID: 27721237 DOI: 10.1172/jci89056] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Accepted: 08/31/2016] [Indexed: 01/06/2023] Open
Abstract
Eccrine sweat glands are essential for sweating and thermoregulation in humans. Loss-of-function mutations in the Ca2+ release-activated Ca2+ (CRAC) channel genes ORAI1 and STIM1 abolish store-operated Ca2+ entry (SOCE), and patients with these CRAC channel mutations suffer from anhidrosis and hyperthermia at high ambient temperatures. Here we have shown that CRAC channel-deficient patients and mice with ectodermal tissue-specific deletion of Orai1 (Orai1K14Cre) or Stim1 and Stim2 (Stim1/2K14Cre) failed to sweat despite normal sweat gland development. SOCE was absent in agonist-stimulated sweat glands from Orai1K14Cre and Stim1/2K14Cre mice and human sweat gland cells lacking ORAI1 or STIM1 expression. In Orai1K14Cre mice, abolishment of SOCE was associated with impaired chloride secretion by primary murine sweat glands. In human sweat gland cells, SOCE mediated by ORAI1 was necessary for agonist-induced chloride secretion and activation of the Ca2+-activated chloride channel (CaCC) anoctamin 1 (ANO1, also known as TMEM16A). By contrast, expression of TMEM16A, the water channel aquaporin 5 (AQP5), and other regulators of sweat gland function was normal in the absence of SOCE. Our findings demonstrate that Ca2+ influx via store-operated CRAC channels is essential for CaCC activation, chloride secretion, and sweat production in humans and mice.
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Saint-Criq V, Gray MA. Role of CFTR in epithelial physiology. Cell Mol Life Sci 2016; 74:93-115. [PMID: 27714410 PMCID: PMC5209439 DOI: 10.1007/s00018-016-2391-y] [Citation(s) in RCA: 242] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 09/28/2016] [Indexed: 12/20/2022]
Abstract
Salt and fluid absorption and secretion are two processes that are fundamental to epithelial function and whole body fluid homeostasis, and as such are tightly regulated in epithelial tissues. The CFTR anion channel plays a major role in regulating both secretion and absorption in a diverse range of epithelial tissues, including the airways, the GI and reproductive tracts, sweat and salivary glands. It is not surprising then that defects in CFTR function are linked to disease, including life-threatening secretory diarrhoeas, such as cholera, as well as the inherited disease, cystic fibrosis (CF), one of the most common life-limiting genetic diseases in Caucasian populations. More recently, CFTR dysfunction has also been implicated in the pathogenesis of acute pancreatitis, chronic obstructive pulmonary disease (COPD), and the hyper-responsiveness in asthma, underscoring its fundamental role in whole body health and disease. CFTR regulates many mechanisms in epithelial physiology, such as maintaining epithelial surface hydration and regulating luminal pH. Indeed, recent studies have identified luminal pH as an important arbiter of epithelial barrier function and innate defence, particularly in the airways and GI tract. In this chapter, we will illustrate the different operational roles of CFTR in epithelial function by describing its characteristics in three different tissues: the airways, the pancreas, and the sweat gland.
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Affiliation(s)
- Vinciane Saint-Criq
- Epithelial Research Group, Institute for Cell and Molecular Biosciences, University Medical School, Newcastle University, Framlington Place, Newcastle upon Tyne, NE2 4HH UK
| | - Michael A. Gray
- Epithelial Research Group, Institute for Cell and Molecular Biosciences, University Medical School, Newcastle University, Framlington Place, Newcastle upon Tyne, NE2 4HH UK
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Cui CY, Ishii R, Campbell DP, Michel M, Piao Y, Kume T, Schlessinger D. Foxc1 Ablated Mice Are Anhidrotic and Recapitulate Features of Human Miliaria Sweat Retention Disorder. J Invest Dermatol 2016; 137:38-45. [PMID: 27592801 DOI: 10.1016/j.jid.2016.08.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 08/16/2016] [Accepted: 08/17/2016] [Indexed: 11/15/2022]
Abstract
Sweat glands are critical for thermoregulation. The single tubular structure of sweat glands has a lower secretory portion and an upper reabsorptive duct leading to the secretory pore in the skin. Genes that determine sweat gland structure and function are largely unidentified. Here we report that a Fox family transcription factor, Foxc1, is obligate for appreciable sweat duct activity in mice. When Foxc1 was specifically ablated in skin, sweat glands appeared mature, but the mice were severely hypohidrotic. Morphologic analysis revealed that sweat ducts were blocked by hyperkeratotic or parakeratotic plugs. Consequently, lumens in ducts and secretory portions were dilated, and blisters and papules formed on the skin surface in the knockout mice. The phenotype was strikingly similar to the human sweat retention disorder miliaria. We further show that Foxc1 deficiency ectopically induces the expression of keratinocyte terminal differentiation markers in the duct luminal cells, which most likely contribute to keratotic plug formation. Among those differentiation markers, we show that Sprr2a transcription is directly repressed by overexpressed Foxc1 in keratinocytes. In summary, Foxc1 regulates sweat duct luminal cell differentiation, and mutant mice mimic miliaria and provide a possible animal model for its study.
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Affiliation(s)
- Chang-Yi Cui
- Laboratory of Genetics and Genomics, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, USA.
| | - Ryuga Ishii
- Laboratory of Genetics and Genomics, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, USA
| | - Dean P Campbell
- Laboratory of Genetics and Genomics, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, USA
| | - Marc Michel
- Laboratory of Genetics and Genomics, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, USA
| | - Yulan Piao
- Laboratory of Genetics and Genomics, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, USA
| | - Tsutomu Kume
- Feinberg Cardiovascular Research Institute, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - David Schlessinger
- Laboratory of Genetics and Genomics, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, USA
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Fujii N, Louie JC, McNeely BD, Zhang SY, Tran MA, Kenny GP. K+ channel mechanisms underlying cholinergic cutaneous vasodilation and sweating in young humans: roles of KCa, KATP, and KV channels? Am J Physiol Regul Integr Comp Physiol 2016; 311:R600-6. [PMID: 27440718 DOI: 10.1152/ajpregu.00249.2016] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Accepted: 07/14/2016] [Indexed: 11/22/2022]
Abstract
Acetylcholine released from cholinergic nerves is involved in heat loss responses of cutaneous vasodilation and sweating. K(+) channels are thought to play a role in regulating cholinergic cutaneous vasodilation and sweating, though which K(+) channels are involved in their regulation remains unclear. We evaluated the hypotheses that 1) Ca(2+)-activated K(+) (KCa), ATP-sensitive K(+) (KATP), and voltage-gated K(+) (KV) channels all contribute to cholinergic cutaneous vasodilation; and 2) KV channels, but not KCa and KATP channels, contribute to cholinergic sweating. In 13 young adults (24 ± 5 years), cutaneous vascular conductance (CVC) and sweat rate were evaluated at intradermal microdialysis sites that were continuously perfused with: 1) lactated Ringer (Control), 2) 50 mM tetraethylammonium (KCa channel blocker), 3) 5 mM glybenclamide (KATP channel blocker), and 4) 10 mM 4-aminopyridine (KV channel blocker). At all sites, cholinergic cutaneous vasodilation and sweating were induced by coadministration of methacholine (0.0125, 0.25, 5, 100, and 2,000 mM, each for 25 min). The methacholine-induced increase in CVC was lower with the KCa channel blocker relative to Control at 0.0125 (1 ± 1 vs. 9 ± 6%max) and 5 (2 ± 5 vs. 17 ± 14%max) mM methacholine, whereas it was lower in the presence of KATP (69 ± 7%max) and KV (57 ± 14%max) channel blocker compared with Control (79 ± 6%max) at 100 mM methacholine. Furthermore, methacholine-induced sweating was lower at the KV channel blocker site (0.42 ± 0.17 mg·min(-1)·cm(-2)) compared with Control (0.58 ± 0.15 mg·min(-1)·cm(-2)) at 2,000 mM methacholine. In conclusion, we show that KCa, KATP, and KV channels play a role in cholinergic cutaneous vasodilation, whereas only KV channels contribute to cholinergic sweating in normothermic resting humans.
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Affiliation(s)
- Naoto Fujii
- Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, Ottawa, Canada
| | - Jeffrey C Louie
- Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, Ottawa, Canada
| | - Brendan D McNeely
- Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, Ottawa, Canada
| | - Sarah Yan Zhang
- Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, Ottawa, Canada
| | - My-An Tran
- Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, Ottawa, Canada
| | - Glen P Kenny
- Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, Ottawa, Canada
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Ma K, Tan Z, Zhang C, Fu X. Mesenchymal stem cells for sweat gland regeneration after burns: From possibility to reality. Burns 2016; 42:492-9. [DOI: 10.1016/j.burns.2015.04.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 02/18/2015] [Accepted: 04/17/2015] [Indexed: 01/16/2023]
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Cui CY, Sima J, Yin M, Michel M, Kunisada M, Schlessinger D. Identification of potassium and chloride channels in eccrine sweat glands. J Dermatol Sci 2015; 81:129-31. [PMID: 26627722 DOI: 10.1016/j.jdermsci.2015.11.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 10/16/2015] [Accepted: 11/04/2015] [Indexed: 11/29/2022]
Affiliation(s)
- Chang-Yi Cui
- Laboratory of Genetics, National Institute on Aging, National Institutes of Health, 251 Bayview Blvd., Suite 100, Baltimore, MD, USA.
| | - Jian Sima
- Laboratory of Genetics, National Institute on Aging, National Institutes of Health, 251 Bayview Blvd., Suite 100, Baltimore, MD, USA
| | - Mingzhu Yin
- Laboratory of Genetics, National Institute on Aging, National Institutes of Health, 251 Bayview Blvd., Suite 100, Baltimore, MD, USA
| | - Marc Michel
- Laboratory of Genetics, National Institute on Aging, National Institutes of Health, 251 Bayview Blvd., Suite 100, Baltimore, MD, USA
| | - Makoto Kunisada
- Division of Dermatology, Department of Internal Related, Graduate School of Medicine, Kobe University, Kobe, Japan
| | - David Schlessinger
- Laboratory of Genetics, National Institute on Aging, National Institutes of Health, 251 Bayview Blvd., Suite 100, Baltimore, MD, USA
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Johnson AA, Bachman LA, Gilles BJ, Cross SD, Stelzig KE, Resch ZT, Marmorstein LY, Pulido JS, Marmorstein AD. Autosomal Recessive Bestrophinopathy Is Not Associated With the Loss of Bestrophin-1 Anion Channel Function in a Patient With a Novel BEST1 Mutation. Invest Ophthalmol Vis Sci 2015. [PMID: 26200502 DOI: 10.1167/iovs.15-16910] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
PURPOSE Mutations in BEST1, encoding bestrophin-1 (Best1), cause autosomal recessive bestrophinopathy (ARB). Encoding bestrophin-1 is a pentameric anion channel localized to the basolateral plasma membrane of the RPE. Here, we characterize the effects of the mutations R141H (CGC > CAC) and I366fsX18 (c.1098_1100+7del), identified in a patient in our practice, on Best1 trafficking, oligomerization, and channel activity. METHODS Currents of Cl- were assessed in transfected HEK293 cells using whole-cell patch clamp. Best1 localization was assessed by confocal microscopy in differentiated, human-induced pluripotent stem cell-derived RPE (iPSC-RPE) cells following expression of mutants via adenovirus-mediated gene transfer. Oligomerization was evaluated by coimmunoprecipitation in iPSC-RPE and MDCK cells. RESULTS Compared to Best1, Best1 I366fsX18 currents were increased while Best1 R141H Cl- currents were diminished. Coexpression of Best1 R141H with Best1 or Best1 I366fsX18 resulted in rescued channel activity. Overexpressed Best1, Best1 R141H, and Best1 I366fsX18 were all properly localized in iPSC-RPE cells; Best1 R141H and Best1 I366fsX18 coimmunoprecipitated with endogenous Best1 in iPSC-RPE cells and with each other in MDCK cells. CONCLUSIONS The first 366 amino acids of Best1 are sufficient to mediate channel activity and homo-oligomerization. The combination of Best1 and Best1 R141H does not cause disease, while Best1 R141H together with Best1 I366fsX18 causes ARB. Since both combinations generate comparable Cl- currents, this indicates that ARB in this patient is not caused by a loss of channel activity. Moreover, Best1 I366fsX18 differs from Best1 in that it lacks most of the cytosolic C-terminal domain, suggesting that the loss of this region contributes significantly to the pathogenesis of ARB in this patient.
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Affiliation(s)
- Adiv A Johnson
- Department of Ophthalmology Mayo Clinic, Rochester, Minnesota, United States
| | - Lori A Bachman
- Department of Ophthalmology Mayo Clinic, Rochester, Minnesota, United States
| | - Benjamin J Gilles
- Department of Ophthalmology Mayo Clinic, Rochester, Minnesota, United States
| | - Samuel D Cross
- Department of Ophthalmology Mayo Clinic, Rochester, Minnesota, United States
| | - Kimberly E Stelzig
- Center for Regenerative Medicine, Mayo Clinic, Rochester, Minnesota, United States
| | - Zachary T Resch
- Center for Regenerative Medicine, Mayo Clinic, Rochester, Minnesota, United States
| | - Lihua Y Marmorstein
- Department of Ophthalmology Mayo Clinic, Rochester, Minnesota, United States
| | - Jose S Pulido
- Department of Ophthalmology Mayo Clinic, Rochester, Minnesota, United States 3Department of Molecular Medicine, Mayo Clinic, Rochester, Minnesota, United States
| | - Alan D Marmorstein
- Department of Ophthalmology Mayo Clinic, Rochester, Minnesota, United States
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Cui CY, Schlessinger D. Eccrine sweat gland development and sweat secretion. Exp Dermatol 2015; 24:644-50. [PMID: 26014472 DOI: 10.1111/exd.12773] [Citation(s) in RCA: 122] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/20/2015] [Indexed: 12/21/2022]
Abstract
Eccrine sweat glands help to maintain homoeostasis, primarily by stabilizing body temperature. Derived from embryonic ectoderm, millions of eccrine glands are distributed across human skin and secrete litres of sweat per day. Their easy accessibility has facilitated the start of analyses of their development and function. Mouse genetic models find sweat gland development regulated sequentially by Wnt, Eda and Shh pathways, although precise subpathways and additional regulators require further elucidation. Mature glands have two secretory cell types, clear and dark cells, whose comparative development and functional interactions remain largely unknown. Clear cells have long been known as the major secretory cells, but recent studies suggest that dark cells are also indispensable for sweat secretion. Dark cell-specific Foxa1 expression was shown to regulate a Ca(2+) -dependent Best2 anion channel that is the candidate driver for the required ion currents. Overall, it was shown that cholinergic impulses trigger sweat secretion in mature glands through second messengers - for example InsP3 and Ca(2+) - and downstream ion channels/transporters in the framework of a Na(+) -K(+) -Cl(-) cotransporter model. Notably, the microenvironment surrounding secretory cells, including acid-base balance, was implicated to be important for proper sweat secretion, which requires further clarification. Furthermore, multiple ion channels have been shown to be expressed in clear and dark cells, but the degree to which various ion channels function redundantly or indispensably also remains to be determined.
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Affiliation(s)
- Chang-Yi Cui
- Laboratory of Genetics, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - David Schlessinger
- Laboratory of Genetics, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
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Gosalia N, Yang R, Kerschner JL, Harris A. FOXA2 regulates a network of genes involved in critical functions of human intestinal epithelial cells. Physiol Genomics 2015; 47:290-7. [PMID: 25921584 DOI: 10.1152/physiolgenomics.00024.2015] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 04/27/2015] [Indexed: 12/18/2022] Open
Abstract
The forkhead box A (FOXA) family of pioneer transcription factors is critical for the development of many endoderm-derived tissues. Their importance in regulating biological processes in the lung and liver is extensively characterized, though much less is known about their role in intestine. Here we investigate the contribution of FOXA2 to coordinating intestinal epithelial cell function using postconfluent Caco2 cells, differentiated into an enterocyte-like model. FOXA2 binding sites genome-wide were determined by ChIP-seq and direct targets of the factor were validated by ChIP-qPCR and siRNA-mediated depletion of FOXA1/2 followed by RT-qPCR. Peaks of FOXA2 occupancy were frequent at loci contributing to gene ontology pathways of regulation of cell migration, cell motion, and plasma membrane function. Depletion of both FOXA1 and FOXA2 led to a significant reduction in the expression of multiple transmembrane proteins including ion channels and transporters, which form a network that is essential for maintaining normal ion and solute transport. One of the targets was the adenosine A2B receptor, and reduced receptor mRNA levels were associated with a functional decrease in intracellular cyclic AMP. We also observed that 30% of FOXA2 binding sites contained a GATA motif and that FOXA1/A2 depletion reduced GATA-4, but not GATA-6 protein levels. These data show that FOXA2 plays a pivotal role in regulating intestinal epithelial cell function. Moreover, that the FOXA and GATA families of transcription factors may work cooperatively to regulate gene expression genome-wide in the intestinal epithelium.
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Affiliation(s)
- Nehal Gosalia
- Human Molecular Genetics Program, Lurie Children's Research Center, Chicago, Illinois; Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, Illinois; and
| | - Rui Yang
- Human Molecular Genetics Program, Lurie Children's Research Center, Chicago, Illinois; Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, Illinois; and
| | - Jenny L Kerschner
- Human Molecular Genetics Program, Lurie Children's Research Center, Chicago, Illinois; Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, Illinois; and
| | - Ann Harris
- Human Molecular Genetics Program, Lurie Children's Research Center, Chicago, Illinois; Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, Illinois; and Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, Illinois
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50
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Zhang C, Chen Y, Fu X. Sweat gland regeneration after burn injury: is stem cell therapy a new hope? Cytotherapy 2014; 17:526-35. [PMID: 25533933 DOI: 10.1016/j.jcyt.2014.10.016] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 10/06/2014] [Accepted: 10/21/2014] [Indexed: 11/25/2022]
Abstract
Stem cells are the seeds of tissue repair and regeneration and a promising source for novel therapies. The skin of patients with an extensive deep burn injury is repaired by a hypertrophic scar without regeneration of sweat glands and therefore loses the function of perspiration. Stem cell therapy provides the possibility of sweat gland regeneration. In particular, recent studies have reported the reprogramming of mesenchymal stromal cells into sweat gland-like (SGL) cells. We present an overview of recent researches into sweat gland regeneration with stem cells. Difficulties of sweat gland regeneration after deep burns have been elaborated. The advantage and disadvantage of several stem cell types in sweat gland regeneration have been discussed. Additionally, the possible mechanisms for reprogramming stem cells to SGL cells are summarized. A brief discussion on clinical application of stem cell-derived SGL cells is also presented. This review may possibly provide some implications for sweat gland regeneration.
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Affiliation(s)
- Cuiping Zhang
- Stem Cell and Tissue Regeneration Laboratory, The First Affiliated Hospital, General Hospital of PLA, Beijing, PR China.
| | - Yan Chen
- Department of Pharmacy, General Hospital of Beijing Military Region, Beijing, PR China
| | - Xiaobing Fu
- Stem Cell and Tissue Regeneration Laboratory, The First Affiliated Hospital, General Hospital of PLA, Beijing, PR China
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