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Pallotti S, Picciolini M, Deiana G, Pediconi D, Antonini M, Napolioni V, Renieri C. Whole genome sequencing analysis of alpaca suggests TRPV3 as a candidate gene for the suri phenotype. BMC Genomics 2024; 25:185. [PMID: 38365607 PMCID: PMC10873959 DOI: 10.1186/s12864-024-10086-8] [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: 08/14/2023] [Accepted: 02/02/2024] [Indexed: 02/18/2024] Open
Abstract
BACKGROUND Alpaca is a domestic South American camelid probably arising from the domestication of two wild camelids, the vicugna and the guanaco. Two phenotypes are described for alpaca, known as huacaya and suri. Huacaya fleece is characterized by compact, soft, and highly crimped fibers, while suri fleece is longer, straight, less crimped, and lustrous. The gene variants determining these phenotypes are still unknown, although previous studies suggested a dominant inheritance of the suri. Based on that, the aim of this study was the identification of the gene variants determining alpaca coat phenotypes through whole genome sequencing (WGS) analysis. RESULTS The sample used includes two test-cross alpaca families, suri × huacaya, which produced two offspring, one with the suri phenotype and one with the huacaya phenotype. The analyzed sample was expanded through the addition of WGS data from six vicugnas and six guanacos; this because we assumed the absence of the gene variants linked to the suri phenotype in these wild species. The analysis of gene variant segregation with the suri phenotype, coupled with the filtering of gene variants present in the wild species, disclosed the presence in all the suri samples of a premature termination codon (PTC) in TRPV3 (transient receptor potential cation channel subfamily V member 3), a gene known to be involved in hair growth and cycling, thermal sensation, cold tolerance and adaptation in several species. Mutations in TRPV3 were previously associated with the alteration of hair structure leading to an impaired formation of the hair canal and the hair shaft in mouse. This PTC in TRPV3, due to a G > T substitution (p.Glu475*), results in a loss of 290 amino acids from the canonical translated protein, plausibly leading to a physiological dysfunction. CONCLUSION The present results suggest that the suri phenotype may arise from a TRPV3 gene variant which may explain some of the suri features such as its longer hair fibre with lower number of cuticular scales compared to huacaya.
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Affiliation(s)
- Stefano Pallotti
- Genomic And Molecular Epidemiology (GAME) Lab, School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile III Da Varano s/n, 62032, Camerino, Italy.
| | | | - Giovanni Deiana
- School of Pharmacy and Health Products, University of Camerino, Camerino, Italy
| | - Dario Pediconi
- School of Pharmacy and Health Products, University of Camerino, Camerino, Italy
| | - Marco Antonini
- Italian National Agency for New Technologies, Energy and Sustainable Development (ENEA), Roma, Italy
| | - Valerio Napolioni
- Genomic And Molecular Epidemiology (GAME) Lab, School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile III Da Varano s/n, 62032, Camerino, Italy
| | - Carlo Renieri
- School of Pharmacy and Health Products, University of Camerino, Camerino, Italy
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Um JY, Kim HB, Shim WS, Lee WJ, Lee SY, Park JS, Kim JC, Kwak IS, Chung BY, Park CW, Kim HO. The transient receptor potential vanilloid-3 (TRPV3) channel in epidermal keratinocytes induce thymic interstitial lymphopoietin: Implications for TRPV3-mediated itch pathways. Clin Exp Allergy 2024; 54:152-155. [PMID: 37986270 DOI: 10.1111/cea.14426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 10/26/2023] [Accepted: 11/08/2023] [Indexed: 11/22/2023]
Affiliation(s)
- Ji Young Um
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Seoul, South Korea
| | - Han Bi Kim
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Seoul, South Korea
| | - Won-Sik Shim
- College of Pharmacy, Gachon University, Incheon, South Korea
| | - Wook Joo Lee
- College of Pharmacy, Gachon University, Incheon, South Korea
| | - So Yeon Lee
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Seoul, South Korea
| | - Jin Seo Park
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Seoul, South Korea
| | - Jin Cheol Kim
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Seoul, South Korea
| | - In Suk Kwak
- Department of Anesthesiology and Pain Medicine, Hallym University Hangang Sacred Heart Hospital, Seoul, South Korea
| | - Bo Young Chung
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Seoul, South Korea
| | - Chun Wook Park
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Seoul, South Korea
| | - Hye One Kim
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Seoul, South Korea
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Thi HD, Kim JY, Kim HJ, Kim WK, Kim SJ, Nam JH. Inhibition of Ca 2+-permeable TRPV3 and inflammatory cytokine release by honokiol and magnolol in human epidermal keratinocytes. Biochem Biophys Res Commun 2024; 692:149332. [PMID: 38043155 DOI: 10.1016/j.bbrc.2023.149332] [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: 10/25/2023] [Accepted: 11/23/2023] [Indexed: 12/05/2023]
Abstract
Transient receptor potential vanilloid-3 (TRPV3) ion channels are prominently expressed in keratinocytes, playing a vital role in skin functions. Honokiol and magnolol (H&M) the primary bioactive constituents in Magnolia officinalis extract, demonstrate anti-inflammatory and skin-protective properties. Nevertheless, the underlying mechanism regarding their effect on Ca2+-permeable ion channels remain unclear. Our purpose in this study is to investigate the effect of H&M on TRPV3 and cytokine release in normal human epidermal keratinocytes (NHEKs), including its gain-of-function (GOF) mutants (G573S and G573C) associated with Olmstead syndrome. We performed whole-cell patch-clamp, fura-2 spectrofluorimetry to investigate channels activity, CCK-8 assay to analyze cell death and enzyme-linked immunosorbent assay to assess the cytokine release from NHEKs. H&M inhibited the TRPV3 current (ITRPV3) and cytosolic calcium increase in NHEKs, HEK293T cells overexpressing hTRPV3 and its GOF mutants. Moreover, the release of pro-inflammatory cytokines (interleukin-6 and -8) from keratinocytes stimulated by TRPV3 agonist was effectively suppressed by H&M. Our findings provide insights into the mechanism underlying the anti-inflammatory effects of H&M, highlighting their potential in treating skin diseases.
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Affiliation(s)
- Huyen Dang Thi
- Department of Physiology, Dongguk University College of Medicine, Gyeongju, 38066, Republic of Korea; Channelopathy Research Center (CRC), Dongguk University College of Medicine, Gyeonggi-do, 10326, Republic of Korea
| | - Ji Yeong Kim
- Department of Physiology, Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea
| | - Hyun Jong Kim
- Department of Physiology, Dongguk University College of Medicine, Gyeongju, 38066, Republic of Korea; Channelopathy Research Center (CRC), Dongguk University College of Medicine, Gyeonggi-do, 10326, Republic of Korea
| | - Woo Kyung Kim
- Channelopathy Research Center (CRC), Dongguk University College of Medicine, Gyeonggi-do, 10326, Republic of Korea; Department of Internal Medicine Graduate School of Medicine, Dongguk University, Gyeonggido, 10326, Republic of Korea.
| | - Sung Joon Kim
- Department of Physiology, Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea.
| | - Joo Hyun Nam
- Department of Physiology, Dongguk University College of Medicine, Gyeongju, 38066, Republic of Korea; Channelopathy Research Center (CRC), Dongguk University College of Medicine, Gyeonggi-do, 10326, Republic of Korea; Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, 02114, Massachusetts, USA.
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4
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Lu J, Jiang G. Guarding skin under PPE: Mechanistic insights and technological innovations. Skin Res Technol 2023; 29:e13520. [PMID: 38009022 PMCID: PMC10626285 DOI: 10.1111/srt.13520] [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: 10/13/2023] [Accepted: 10/24/2023] [Indexed: 11/28/2023]
Abstract
In the presence of diseases transmitted through respiratory droplets and direct contact, healthcare workers (HCWs) necessitate the use of personal protective equipment (PPE). For optimal safety, PPE should securely conform to the skin during extended wear. However, conventional PPE often lacks adequate air permeability and hygroscopicity, trapping heat and moisture emitted by the body within the enclosure. Such a hot and humid internal environment can induce skin damage, such as erythema, rash, pruritus, and itching among others, leading to microbial growth on the skin surface, the production of inflammatory mediators at the wound site and an increased risk of infection. This review strives to comprehensively elucidate the fundamental mechanisms triggering adverse skin reactions and their resultant manifestations. Furthermore, we explore recent advancements aimed at inhibiting these mechanisms to effectively mitigate the occurrence of skin lesions.
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Affiliation(s)
- Junru Lu
- Department of DermatologyAffiliated Hospital of Xuzhou Medical UniversityXuzhouJiangsuChina
- Xuzhou Medical UniversityXuzhouJiangsuChina
| | - Guan Jiang
- Department of DermatologyAffiliated Hospital of Xuzhou Medical UniversityXuzhouJiangsuChina
- Xuzhou Medical UniversityXuzhouJiangsuChina
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Dang TH, Kim JY, Kim HJ, Kim BJ, Kim WK, Nam JH. Alpha-Mangostin: A Potent Inhibitor of TRPV3 and Pro-Inflammatory Cytokine Secretion in Keratinocytes. Int J Mol Sci 2023; 24:12930. [PMID: 37629111 PMCID: PMC10455244 DOI: 10.3390/ijms241612930] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 08/14/2023] [Accepted: 08/17/2023] [Indexed: 08/27/2023] Open
Abstract
The TRPV3 calcium ion channel is vital for maintaining skin health and has been associated with various skin-related disorders. Since TRPV3 is involved in the development of skin inflammation, inhibiting TRPV3 could be a potential treatment strategy. Alpha-mangostin isolated from Garcinia mangostana L. extract exhibits diverse positive effects on skin health; however, the underlying mechanisms remain obscure. This study investigated the TRPV3-inhibitory properties of alpha-mangostin on TRPV3 hyperactive mutants associated with Olmsted syndrome and its impact on TRPV3-induced cytokine secretion and cell death. Our findings demonstrate that alpha-mangostin effectively inhibits TRPV3, with an IC50 of 0.077 ± 0.013 μM, showing inhibitory effects on both wild-type and mutant TRPV3. TRPV3 inhibition with alpha-mangostin decreased calcium influx and cytokine release, protecting cells from TRPV3-induced death. These results indicate that alpha-mangostin reduced inflammation in TRPV3-activated skin keratinocytes, suggesting that alpha-mangostin could be potentially used for improving inflammatory skin conditions such as dermatitis.
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Affiliation(s)
- Thi Huyen Dang
- Department of Physiology, Dongguk University College of Medicine, Gyeongju 38066, Republic of Korea; (T.H.D.); (H.J.K.)
- Channelopathy Research Center (CRC), Dongguk University College of Medicine, Goyang 10326, Republic of Korea
| | - Ji Yeong Kim
- Department of Physiology, Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul 03080, Republic of Korea;
| | - Hyun Jong Kim
- Department of Physiology, Dongguk University College of Medicine, Gyeongju 38066, Republic of Korea; (T.H.D.); (H.J.K.)
- Channelopathy Research Center (CRC), Dongguk University College of Medicine, Goyang 10326, Republic of Korea
| | - Byung Joo Kim
- Department of Longevity and Biofunctional Medicine, Pusan National University School of Korean Medicine, Yangsan 50612, Republic of Korea;
| | - Woo Kyung Kim
- Department of Physiology, Dongguk University College of Medicine, Gyeongju 38066, Republic of Korea; (T.H.D.); (H.J.K.)
- Channelopathy Research Center (CRC), Dongguk University College of Medicine, Goyang 10326, Republic of Korea
- Department of Internal Medicine Graduate School of Medicine, Dongguk University, Goyang 10326, Republic of Korea
| | - Joo Hyun Nam
- Department of Physiology, Dongguk University College of Medicine, Gyeongju 38066, Republic of Korea; (T.H.D.); (H.J.K.)
- Channelopathy Research Center (CRC), Dongguk University College of Medicine, Goyang 10326, Republic of Korea
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Zhang L, Zeng H, Jiang L, Fu C, Zhang Y, Hu Y, Zhang X, Zhu L, Zhang F, Huang J, Chen J, Zeng Q. Heat promotes melanogenesis by increasing the paracrine effects in keratinocytes via the TRPV3/Ca 2+/Hh signaling pathway. iScience 2023; 26:106749. [PMID: 37216091 PMCID: PMC10192915 DOI: 10.1016/j.isci.2023.106749] [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: 09/03/2022] [Revised: 03/10/2023] [Accepted: 04/21/2023] [Indexed: 05/24/2023] Open
Abstract
Global warming and rising temperature significantly increase the incidence of heat stress, which is known to affect the process of inflammation and aging. However, the effect of heat stress on skin melanogenesis is not fully known. We found that healthy foreskin tissues underwent significant pigmentation when exposed to 41°C. Furthermore, heat stress promoted melanogenesis in pigment cells by increasing the paracrine effects of keratinocytes. High-throughput RNA sequencing showed that heat stress activates the Hedgehog (Hh) signaling pathway in keratinocytes. The agonists of Hh signaling promote the paracrine effect of keratinocytes on melanogenesis. In addition, transient receptor potential vanilloid (TRPV) 3 agonists activate the Hh signaling in keratinocytes and augment its paracrine effect on melanogenesis. The heat-induced activation of Hh signaling is dependent on TRPV3-mediated Ca2+ influx. Heat exposure promotes melanogenesis by increasing the paracrine effects in keratinocytes via the TRPV3/Ca2+/Hh signaling pathway. Our findings provide insights into the mechanisms of heat-induced skin pigmentation.
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Affiliation(s)
- Lan Zhang
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Hongliang Zeng
- Center of Medical Laboratory Animal, Hunan Academy of Chinese Medicine, Changsha, Hunan 410013, P.R. China
| | - Ling Jiang
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Chuhan Fu
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Yushan Zhang
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Yibo Hu
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Xiaolin Zhang
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Lu Zhu
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Fan Zhang
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Jinhua Huang
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Jing Chen
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Qinghai Zeng
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
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Kalinovskii AP, Utkina LL, Korolkova YV, Andreev YA. TRPV3 Ion Channel: From Gene to Pharmacology. Int J Mol Sci 2023; 24:ijms24108601. [PMID: 37239947 DOI: 10.3390/ijms24108601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 05/07/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Transient receptor potential vanilloid subtype 3 (TRPV3) is an ion channel with a sensory function that is most abundantly expressed in keratinocytes and peripheral neurons. TRPV3 plays a role in Ca2+ homeostasis due to non-selective ionic conductivity and participates in signaling pathways associated with itch, dermatitis, hair growth, and skin regeneration. TRPV3 is a marker of pathological dysfunctions, and its expression is increased in conditions of injury and inflammation. There are also pathogenic mutant forms of the channel associated with genetic diseases. TRPV3 is considered as a potential therapeutic target of pain and itch, but there is a rather limited range of natural and synthetic ligands for this channel, most of which do not have high affinity and selectivity. In this review, we discuss the progress in the understanding of the evolution, structure, and pharmacology of TRPV3 in the context of the channel's function in normal and pathological states.
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Affiliation(s)
- Aleksandr P Kalinovskii
- Department of Molecular Neurobiology, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences (IBCh RAS), 16/10 Miklukho-Maklay Str., 117997 Moscow, Russia
| | - Lyubov L Utkina
- Institute of Molecular Medicine, Sechenov First Moscow State Medical University, Trbetskaya Str. 8, Bld. 2, 119991 Moscow, Russia
| | - Yuliya V Korolkova
- Department of Molecular Neurobiology, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences (IBCh RAS), 16/10 Miklukho-Maklay Str., 117997 Moscow, Russia
| | - Yaroslav A Andreev
- Department of Molecular Neurobiology, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences (IBCh RAS), 16/10 Miklukho-Maklay Str., 117997 Moscow, Russia
- Institute of Molecular Medicine, Sechenov First Moscow State Medical University, Trbetskaya Str. 8, Bld. 2, 119991 Moscow, Russia
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Novel Insights into the Role of Keratinocytes-Expressed TRPV3 in the Skin. Biomolecules 2023; 13:biom13030513. [PMID: 36979447 PMCID: PMC10046267 DOI: 10.3390/biom13030513] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/02/2023] [Accepted: 03/01/2023] [Indexed: 03/16/2023] Open
Abstract
TRPV3 is a non-selective cation channel that is highly expressed in keratinocytes in the skin. Traditionally, keratinocytes-expressed TRPV3 is involved in multiple physiological and pathological functions of the skin, such as itching, heat pain, and hair development. Although the underlying mechanisms by which TRPV3 functions in vivo remain obscure, recent research studies suggest that several cytokines and EGFR signaling pathways may be involved. However, there have also been other studies with opposite results that question the role of TRPV3 in heat pain. In addition, an increasing number of studies have suggested a novel role of TRPV3 in promoting skin regeneration, indicating that TRPV3 may become a new potential target for regulating skin regeneration. This paper not only reviews the role of keratinocytes-expressed TRPV3 in the physiological and pathological processes of itching, heat pain, hair development, and skin regeneration, but also reviews the relationship between TRPV3 gene mutations and skin diseases such as atopic dermatitis (AD) and Olmsted syndrome (OS). This review will lay a foundation for further developing our understanding of the mechanisms by which TRPV3 is involved in itching, heat pain, and hair development, as well as the treatments for TRPV3-related skin diseases.
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Cheng H, An X. Cold stimuli, hot topic: An updated review on the biological activity of menthol in relation to inflammation. Front Immunol 2022; 13:1023746. [DOI: 10.3389/fimmu.2022.1023746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 10/25/2022] [Indexed: 11/11/2022] Open
Abstract
BackgroundRising incidence of inflammation-related diseases is an increasing concern nowadays. However, while menthol is a wildly-used and efficacious complementary medicine, its pharmacological mechanism still remains uncertain. Superimposed upon that, the aim of this review is to summarize the contemporary evidence of menthol’s anti-inflammatory activity.MethodsUsing the pharmacopeias and electronic databases, including Web of Science, PubMed, and CNKI, this study analyzed the relevant research articles and review articles from 2002 to 2022 and concluded those results and conjectures to finish this article.ResultsThe decrease in pro-inflammatory cytokines and related inflammatory markers, as well as associated pathway activation, was found to play the greatest role in the protective effects of menthol against inflammatory damage or association with protection against chronic inflammation.ConclusionThis review mainly concludes the progress in menthol’s anti-inflammatory activity. Further studies are needed to establish relationships between the mechanisms of action and to clarify the clinical relevance of any anti-inflammatory effects.
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Cristina-Silva C, Amaral-Silva L, Santos KM, Correa GM, da Silva WC, Fernandes MHMR, da Silva GSF, Gargaglioni LH, Almeida MC, Bicego KC. Cutaneous TRPV4 Channels Activate Warmth-Defense Responses in Young and Adult Birds. Front Physiol 2022; 13:892828. [PMID: 35910562 PMCID: PMC9337882 DOI: 10.3389/fphys.2022.892828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 06/14/2022] [Indexed: 11/13/2022] Open
Abstract
Transient receptor potential vanilloid 4 (TRPV4) channels are sensitive to warm ambient temperatures (Tas), triggering heat loss responses in adult rats in a Tas range of ∼26–30°C. In birds, however, the thermoregulatory role of TRPV4 has never been shown. Here, we hypothesized that stimulation of TRPV4 induces thermolytic responses for body temperature (Tb) maintenance in birds, and that this function is already present in early life, when the Ta range for TRPV4 activation does not represent a warm condition for these animals. We first demonstrated the presence of TRPV4 in the dorsal and ventral skin of chickens (Gallus gallus domesticus) by immunohistochemistry. Then, we evaluated the effects of the TRPV4 agonist, RN1747, and the TRPV4 antagonists, HC067047 and GSK2193874, on Tb and thermoeffectors at different Tas in 5-day-old chicks and 60-day-old adult chickens. For the chicks, RN1747 transiently reduced Tb both in thermoneutrality (31°C) and in a cold Ta for this phase (26°C), which relied on huddling behavior inhibition. The TRPV4 antagonists alone did not affect Tb or thermoeffectors but blocked the Tb decrease and huddling inhibition promoted by RN1747. For the adults, TRPV4 antagonism increased Tb when animals were exposed to 28°C (suprathermoneutral condition for adults), but not to 19°C. In contrast, RN1747 decreased Tb by reducing metabolic rate and activating thermal tachypnea at 19°C, a Ta below the activation range of TRPV4. Our results indicate that peripheral TRPV4 receptors are functional in early life, but may be inhibited at that time when the range of activation (∼26–30°C) represents cold Ta for chicks, and become physiologically relevant for Tb maintenance when the activation Ta range for TRPV4 becomes suprathermoneutral for adult chickens.
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Affiliation(s)
- Caroline Cristina-Silva
- Department of Animal Morphology and Physiology, Faculty of Agricultural and Veterinary Sciences, Sao Paulo State University, Jaboticabal, Brazil
| | - Lara Amaral-Silva
- Department of Animal Morphology and Physiology, Faculty of Agricultural and Veterinary Sciences, Sao Paulo State University, Jaboticabal, Brazil
| | - Kassia Moreira Santos
- Department of Animal Morphology and Physiology, Faculty of Agricultural and Veterinary Sciences, Sao Paulo State University, Jaboticabal, Brazil
| | - Gabriela Monteiro Correa
- Department of Animal Morphology and Physiology, Faculty of Agricultural and Veterinary Sciences, Sao Paulo State University, Jaboticabal, Brazil
| | - Welex Candido da Silva
- Department of Animal Morphology and Physiology, Faculty of Agricultural and Veterinary Sciences, Sao Paulo State University, Jaboticabal, Brazil
| | - Marcia H. M. R. Fernandes
- Department of Animal Science, Faculty of Agricultural and Veterinary Sciences, Sao Paulo State University, Jaboticabal, Brazil
| | - Glauber S. F. da Silva
- Institute of Biological Sciences, Department of Physiology and Biophysics, Federal University of Minas Gerais (ICB/UFMG), Belo Horizonte, Brazil
| | - Luciane H. Gargaglioni
- Department of Animal Morphology and Physiology, Faculty of Agricultural and Veterinary Sciences, Sao Paulo State University, Jaboticabal, Brazil
| | - Maria C. Almeida
- Center for Natural and Human Sciences, Federal University of ABC (UFABC), São Bernardo do Campo, Brazil
| | - Kenia C. Bicego
- Department of Animal Morphology and Physiology, Faculty of Agricultural and Veterinary Sciences, Sao Paulo State University, Jaboticabal, Brazil
- *Correspondence: Kenia C. Bicego, ,
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11
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Role of Omics in Migraine Research and Management: A Narrative Review. Mol Neurobiol 2022; 59:5809-5834. [PMID: 35796901 DOI: 10.1007/s12035-022-02930-3] [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: 12/01/2021] [Accepted: 06/14/2022] [Indexed: 10/17/2022]
Abstract
Migraine is a neurological disorder defined by episodic attacks of chronic pain associated with nausea, photophobia, and phonophobia. It is known to be a complex disease with several environmental and genetic factors contributing to its susceptibility. Risk factors for migraine include head or neck injury (Arnold, Cephalalgia 38(1):1-211, 2018). Stress and high temperature are known to trigger migraine, while sleep disorders and anxiety are considered to be the comorbid conditions with migraine. Studies have reported various biomarkers, including genetic variants, proteins, and metabolites implicated in migraine's pathophysiology. Using the "omics" approach, which deals with genetics, transcriptomics, proteomics, and metabolomics, more specific biomarkers for various migraine can be identified. On account of its multifactorial nature, migraine is an ideal study model focusing on integrated omics approaches, including genomics, transcriptomics, proteomics, and metabolomics. The current review has been compiled with an aim to focus on the genomic alterations especially involved in the regulation of glutamatergic neurotransmission, cortical excitability, ion channels, solute carrier proteins, or receptors; their expression in migraine patients and also specific proteins and metabolites, including some inflammatory biomarkers that might represent the migraine phenotype at the molecular level. The systems biology approach holds the promise to understand the pathophysiology of the disease at length and also to identify the specific therapeutic targets for novel interventions.
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Treatment of Painful Palmoplantar Keratoderma Related to Pachyonychia Congenita Using EGFR Inhibitors. Biomedicines 2022; 10:biomedicines10040841. [PMID: 35453591 PMCID: PMC9028469 DOI: 10.3390/biomedicines10040841] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 03/27/2022] [Accepted: 03/31/2022] [Indexed: 12/29/2022] Open
Abstract
Pachyonychia congenita (PC) is a genodermatosis associated with severe painful palmoplantar keratoderma (PPK) and thickened dystrophic nails caused by autosomal dominant-negative mutations in five genes encoding keratins 6A-B-C, 16, and 17. The mechanical, surgical, or medical options for painful PC are inefficient. Given ErbB/Her family members’ role in epidermal homeostasis, this study sought to investigate the possibility of treating PC patients with PPK by blocking signaling either with EGFR (Her1) inhibitor erlotinib or lapatinib, a dual EGFR(Her1)/Her2. After 1 month of therapy with oral erlotinib treatment at 75 mg/day, the pain disappeared for patient #1, with partially reduced hyperkeratosis, while increasing the dose to 100 mg/day resulted in painful skin fissures. Therapy replacement with erlotinib cream at 0.2% was inconclusive, and substitution with oral lapatinib at alternating doses of 500 and 750 mg/day achieved a good compromise between pain reduction, symptom improvements, and side effects. Patient #2′s treatment with erlotinib cream failed to display significant improvements. Oral erlotinib started at 75 mg/day then reduced to 25 mg/day because of the formation of an acneiform rash. Treatment considerably improved the patient’s condition, with an almost complete disappearance of pain. Oral Her1 or 1/2 inhibitors reduced pain, improved two PC patients’ quality of life, and offered promising therapeutic perspectives.
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Kim BE, Hui-Beckman J, Lyubchenko T, Hall CF, Fallahi S, Brull A, Goleva E, Leung DY. Transient Receptor Potential Vanilloid 1 Plays a Major Role in Low Temperature-Mediated Skin Barrier Dysfunction. J Allergy Clin Immunol 2022; 150:362-372.e7. [PMID: 35189126 DOI: 10.1016/j.jaci.2022.01.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 12/23/2021] [Accepted: 01/26/2022] [Indexed: 11/25/2022]
Abstract
BACKGROUND Children born in the fall and winter are at increased risk for developing atopic dermatitis (AD) and food allergy (FA). Since these seasons are associated with low temperature, we hypothesized that low temperature exposure may compromise keratinocyte differentiation and contribute to skin barrier dysfunction. OBJECTIVE To examine whether low temperature causes skin barrier dysfunction. METHODS Primary human epidermal keratinocytes (HEKs) were differentiated in 1.3mM CaCl2 media and cultured at different temperatures. The cells were transfected with transient receptor potential cation channel subfamily V member 1 (TRPV1) or signal transducer and activator of transcription (STAT) 3 small-interfering RNA (siRNA) to examine the effects of these gene targets in HEKs exposed to low temperature. Gene expression of TRPV1, epidermal barrier proteins, and keratinocyte-derived cytokines were evaluated. Organotypic skin equivalents were generated using HEKs transfected with control or TRPV1 siRNA and grown at 25oC or 37oC. Transepidermal water loss (TEWL) and levels of epidermal barrier proteins were evaluated. RESULTS Filaggrin (FLG) and loricrin (LOR) expression, but not keratin (KRT)-1 and KRT-10 expression, was downregulated in HEKs incubated at 25oC while TRPV1 silencing increased intracellular Ca2+ influx (keratinocyte differentiation signal) and enhanced the expression of epidermal differentiation proteins. Interleukin (IL)-1β and thymic stromal lymphopoietin (TSLP) induced by low temperature inhibited FLG expression in keratinocytes through the TRPV1/STAT3 pathway. Moreover, low temperature-mediated inhibition of FLG and LOR was recovered, and TEWL was decreased in organotypic skin transfected with TRPV1 siRNA. CONCLUSION TRPV1 is critical in low temperature-mediated skin barrier dysfunction. Low temperature exposure induced TSLP, an alarmin implicated in epicutaneous allergen sensitization. CLINICAL IMPLICATIONS Low temperature causes skin barrier dysfunction through TRPV1 and TSLP, which may explain the pathways involved in promoting allergic sensitization through the skin.
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Affiliation(s)
- Byung Eui Kim
- Department of Pediatrics, National Jewish Health, Denver, CO, 80206
| | | | - Taras Lyubchenko
- Department of Pediatrics, National Jewish Health, Denver, CO, 80206; Department of Biological Science, University of Denver, Denver, CO, 80208
| | - Clifton F Hall
- Department of Pediatrics, National Jewish Health, Denver, CO, 80206
| | - Sahand Fallahi
- Department of Pediatrics, National Jewish Health, Denver, CO, 80206; Department of Biological Science, University of Denver, Denver, CO, 80208
| | - Amelia Brull
- Department of Pediatrics, National Jewish Health, Denver, CO, 80206
| | - Elena Goleva
- Department of Pediatrics, National Jewish Health, Denver, CO, 80206
| | - Donald Ym Leung
- Department of Pediatrics, National Jewish Health, Denver, CO, 80206
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14
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Qi H, Shi Y, Wu H, Niu C, Sun X, Wang K. Inhibition of temperature-sensitive TRPV3 channel by two natural isochlorogenic acid isomers for alleviation of dermatitis and chronic pruritus. Acta Pharm Sin B 2022; 12:723-734. [PMID: 35256942 PMCID: PMC8897028 DOI: 10.1016/j.apsb.2021.08.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 07/13/2021] [Accepted: 07/30/2021] [Indexed: 12/13/2022] Open
Abstract
Genetic gain-of-function mutations of warm temperature-sensitive transient receptor potential vanilloid 3 (TRPV3) channel cause Olmsted syndrome characterized by severe itching and keratoderma, indicating that pharmacological inhibition of TRPV3 may hold promise for therapy of chronic pruritus and skin diseases. However, currently available TRPV3 tool inhibitors are either nonselective or less potent, thus impeding the validation of TRPV3 as therapeutic target. Using whole-cell patch-clamp and single-channel recordings, we report the identification of two natural dicaffeoylquinic acid isomers isochlorogenic acid A (IAA) and isochlorogenic acid B (IAB) that selectively inhibit TRPV3 currents with IC50 values of 2.7 ± 1.3 and 0.9 ± 0.3 μmol/L, respectively, and reduce the channel open probability to 3.7 ± 1.2% and 3.2 ± 1.1% from 26.9 ± 5.5%, respectively. In vivo evaluation confirms that both IAA and IAB significantly reverse the ear swelling of dermatitis and chronic pruritus. Furthermore, the isomer IAB is able to rescue the keratinocyte death induced by TRPV3 agonist carvacrol. Molecular docking combined with site-directed mutations reveals two residues T636 and F666 critical for the binding of the two isomers. Taken together, our identification of isochlorogenic acids A and B that act as specific TRPV3 channel inhibitors and gating modifiers not only provides an essential pharmacological tool for further investigation of the channel pharmacology and pathology, but also holds developmental potential for treatment of dermatitis and chronic pruritus.
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Key Words
- 2-APB, 2-aminoethoxydiphenyl borate
- AITC, allyl isothiocyanate
- Chronic pruritus
- DMEM, Dulbecco's modified Eagle's medium
- Dermatitis
- Dicaffeoylquinic acid
- Ear swelling
- Gate modifier
- HEK293, human embryonic kidney 293
- HaCaT, human immortalized nontumorigenic keratinocyte
- IAA, isochlorogenic acid A
- IAB, isochlorogenic acid B
- OS, Olmsted syndrome
- Olmsted syndrome
- RR, ruthenium red
- TRP, transient receptor potential
- TRPV3
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15
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Fatima M, Slade H, Horwitz L, Shi A, Liu J, McKinstry D, Villani T, Xu H, Duan B. Abnormal Somatosensory Behaviors Associated With a Gain-of-Function Mutation in TRPV3 Channels. Front Mol Neurosci 2022; 14:790435. [PMID: 35058747 PMCID: PMC8764439 DOI: 10.3389/fnmol.2021.790435] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 11/30/2021] [Indexed: 11/13/2022] Open
Abstract
Thermosensitive transient receptor potential V3 (TRPV3) is a polymodal receptor implicated in nociceptive, thermoceptive, pruritoceptive, and inflammatory pathways. Reports focused on understanding the role of TRPV3 in thermoception or nociception are not conclusive. Previous studies also show that aberrant hyperactivity of TRPV3 channels results in spontaneous itch and dermatitis-like symptoms, but the resultant behavior is highly dependent on the background of the animal and the skin microbiome. To determine the function of hyperactive TRPV3 channels in somatosensory sensations, we tested different somatosensory behaviors using a genetic mouse model that carries a gain-of-function point mutation G573S in the Trpv3 gene (Trpv3G573S). Here we report that Trpv3G573S mutants show reduced perception of cold, acetone-induced cooling, punctate, and sharp mechanical pain. By contrast, locomotion, noxious heat, touch, and mechanical itch are unaffected in Trpv3G573S mice. We fail to observe any spontaneous itch responses and/or dermatitis in Trpv3G573S mutants under specific pathogen (Staphylococcus aureus)-free conditions. However, we find that the scratching events in response to various pruritogens are dramatically decreased in Trpv3G573S mice in comparison to wild-type littermates. Interestingly, we observe sensory hypoinnervation of the epidermis in Trpv3G573S mutants, which might contribute to the deficits in acute mechanical pain, cool, cold, and itch sensations.
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16
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Zhang F, Lin Y, Min W, Hou Y, Yuan K, Wang J, Yang P. Computational discovery, structural optimization and biological evaluation of novel inhibitors targeting transient receptor potential vanilloid type 3 (TRPV3). Bioorg Chem 2021; 114:105093. [PMID: 34182309 DOI: 10.1016/j.bioorg.2021.105093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 05/24/2021] [Accepted: 06/10/2021] [Indexed: 10/21/2022]
Abstract
Transient receptor potential vanilloid type 3 (TRPV3) is a Ca2+ permeable nonselective cation channel and expressed abundantly in skin keratinocytes. TRPV3 emerges as an attractive target for treatment of pruritic, inflammatory, pain and skin-related diseases. However, only a few reports of TRPV3 inhibitors exist at present besides some patents. Therefore, TRPV3 research has always been fraught with challenges. Through a combination of virtual screening and biological evaluation, compound P1 (10 μM) was identified as a top hit with 34.5% inhibitory effect on 2-APB (1 mM)-evoked currents of mTRPV3-WT. Further structural optimization provided the inhibitor PC5 with the best activity (IC50 = 2.63 ± 0.28 μM), and point mutation assays indicated that amino acids V629 and F633 are crucial for the binding of PC5 and TRPV3. In summary, these newly discovered inhibitors could serve as promising lead compounds for the development of TRPV3 inhibitors in the future.
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Affiliation(s)
- Fang Zhang
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Yiyu Lin
- School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Wenjian Min
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Yi Hou
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Kai Yuan
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Jin Wang
- School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 211198, China.
| | - Peng Yang
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, China.
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17
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Montero-Vilchez T, Cuenca-Barrales C, Martinez-Lopez A, Molina-Leyva A, Arias-Santiago S. Skin adverse events related to personal protective equipment: a systematic review and meta-analysis. J Eur Acad Dermatol Venereol 2021; 35:1994-2006. [PMID: 34077565 DOI: 10.1111/jdv.17436] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 05/21/2021] [Indexed: 01/03/2023]
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a global pandemic that has spread all over the word. To avoid the virus transmission, healthcare workers must wear adequate personal protective equipment (PPE). PPE is associated with several side events, including skin reactions. The objective of this study was to summarize the prevalence, type and risk factors for cutaneous adverse events related to PPE and prevention measures to avoid them. A systematic review and meta-analysis was conducted using MEDLINE, Scopus and EMBASE databases from conception to 21 January 2021. All types of epidemiological studies regarding skin adverse events related to PPE were included. The literature search identified 1007 references, 35 of them met the eligible criteria and were included for analysis, representing 31 453 participants. The media of skin side events related to PPE was 75.13%. The rate of cutaneous adverse events related to mask was 57.71%, and those associated with gloves and hand hygiene products was 49.16%. Most common skin adverse events were contact dermatitis, acne and itching. The most damaged anatomical regions were the nasal bridge, the cheeks and the hands. The duration of PPE wearing was the most common risk factor. Frequent handwashing, gloves and masks were the agents most frequently related to skin reactions. N95 respirators were the most harmful mask type for the skin. Hydrocolloid use prevented from developing skin adverse events related to masks. In conclusion, the rate of cutaneous adverse events related to PPE use is high. A longer duration of PPE wearing was the most common risk factor. Using hydrocolloid could prevent from skin injuries related to mask use.
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Affiliation(s)
- T Montero-Vilchez
- Department of Dermatology, Virgen de las Nieves University Hospital, Granada, Spain.,Biosanitary Institute of Granada (ibs.GRANADA), Granada, Spain
| | - C Cuenca-Barrales
- Department of Dermatology, Virgen de las Nieves University Hospital, Granada, Spain.,Biosanitary Institute of Granada (ibs.GRANADA), Granada, Spain
| | - A Martinez-Lopez
- Department of Dermatology, Virgen de las Nieves University Hospital, Granada, Spain.,Biosanitary Institute of Granada (ibs.GRANADA), Granada, Spain
| | - A Molina-Leyva
- Department of Dermatology, Virgen de las Nieves University Hospital, Granada, Spain.,Biosanitary Institute of Granada (ibs.GRANADA), Granada, Spain
| | - S Arias-Santiago
- Department of Dermatology, Virgen de las Nieves University Hospital, Granada, Spain.,Biosanitary Institute of Granada (ibs.GRANADA), Granada, Spain.,Cell Production and Tissue Engineering Unit, Virgen de las Nieves University Hospital, Andalusian Network of Design and Translation of Advanced Therapies, Granada, Spain.,Department of Dermatology, Faculty of Medicine, University of Granada, Granada, Spain
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18
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Liu Q, Wang J, Wei X, Hu J, Ping C, Gao Y, Xie C, Wang P, Cao P, Cao Z, Yu Y, Li D, Yao J. Therapeutic inhibition of keratinocyte TRPV3 sensory channel by local anesthetic dyclonine. eLife 2021; 10:e68128. [PMID: 33876725 PMCID: PMC8112869 DOI: 10.7554/elife.68128] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 04/19/2021] [Indexed: 12/15/2022] Open
Abstract
The multimodal sensory channel transient receptor potential vanilloid-3 (TRPV3) is expressed in epidermal keratinocytes and implicated in chronic pruritus, allergy, and inflammation-related skin disorders. Gain-of-function mutations of TRPV3 cause hair growth disorders in mice and Olmsted syndrome in humans. Nevertheless, whether and how TRPV3 could be therapeutically targeted remains to be elucidated. We here report that mouse and human TRPV3 channel is targeted by the clinical medication dyclonine that exerts a potent inhibitory effect. Accordingly, dyclonine rescued cell death caused by gain-of-function TRPV3 mutations and suppressed pruritus symptoms in vivo in mouse model. At the single-channel level, dyclonine inhibited TRPV3 open probability but not the unitary conductance. By molecular simulations and mutagenesis, we further uncovered key residues in TRPV3 pore region that could toggle the inhibitory efficiency of dyclonine. The functional and mechanistic insights obtained on dyclonine-TRPV3 interaction will help to conceive therapeutics for skin inflammation.
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Affiliation(s)
- Qiang Liu
- State Key Laboratory of Virology, Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Wuhan UniversityWuhanChina
| | - Jin Wang
- School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical UniversityNanjingChina
| | - Xin Wei
- State Key Laboratory of Virology, Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Wuhan UniversityWuhanChina
| | - Juan Hu
- State Key Laboratory of Virology, Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Wuhan UniversityWuhanChina
| | - Conghui Ping
- State Key Laboratory of Virology, Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Wuhan UniversityWuhanChina
| | - Yue Gao
- State Key Laboratory of Virology, Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Wuhan UniversityWuhanChina
| | - Chang Xie
- State Key Laboratory of Virology, Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Wuhan UniversityWuhanChina
| | - Peiyu Wang
- State Key Laboratory of Virology, Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Wuhan UniversityWuhanChina
| | - Peng Cao
- Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese MedicineNanjingChina
| | - Zhengyu Cao
- State Key Laboratory of Natural Medicines and Jiangsu Provincial Key Laboratory for TCM Evaluation and Translational Development, School of Traditional Chinese Pharmacy, China Pharmaceutical UniversityNanjingChina
| | - Ye Yu
- School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical UniversityNanjingChina
| | - Dongdong Li
- Sorbonne Université, Institute of Biology Paris Seine, Neuroscience Paris Seine, CNRS UMR8246, Inserm U1130ParisFrance
| | - Jing Yao
- State Key Laboratory of Virology, Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Wuhan UniversityWuhanChina
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19
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Han HS, Shin SH, Park JW, Li K, Kim BJ, Yoo KH. Changes in skin characteristics after using respiratory protective equipment (medical masks and respirators) in the COVID-19 pandemic among healthcare workers. Contact Dermatitis 2021; 85:225-232. [PMID: 33813749 PMCID: PMC8251455 DOI: 10.1111/cod.13855] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 03/19/2021] [Accepted: 03/31/2021] [Indexed: 12/18/2022]
Abstract
BACKGROUND The coronavirus disease-2019 (COVID-19) outbreak has presented unique dermatologic challenges due to respiratory protective equipment (RPE)-related skin conditions. OBJECTIVE To objectively evaluate the effects of RPE including medical masks and respirators on the skin barrier by measuring various physiological properties of the skin. METHODS A cross-sectional study was designed. Twenty healthy healthcare workers were included in this study. Skin parameters including skin hydration, transepidermal water loss (TEWL), erythema, sebum secretion, pH, and skin temperature were measured in the RPE-covered and RPE-uncovered areas of the face 4 and 8 hours after wearing RPE and 14 hours after not wearing RPE. RESULTS Skin hydration, TEWL, erythema, pH, and skin temperature increased in the RPE-covered areas after wearing RPE for 4 and 8 hours. By contrast, in the RPE-uncovered areas, skin hydration decreased and TEWL, erythema, and pH showed minimal changes over time. Based on the repeated-measure analysis, the changes in skin physiological properties over time were significantly different between RPE-covered and RPE-uncovered areas. CONCLUSION We observed that skin physiological characteristics change with the prolonged use of RPE such as medical masks and respirators. These changes may lead to various adverse skin reactions after long-term use.
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Affiliation(s)
- Hye Sung Han
- Department of DermatologyChung‐Ang University College of MedicineSeoulSouth Korea
| | - Sun Hye Shin
- Department of DermatologyChung‐Ang University College of MedicineSeoulSouth Korea
| | - Jae Wan Park
- Department of DermatologyChung‐Ang University College of MedicineSeoulSouth Korea
| | - Kapsok Li
- Department of DermatologyChung‐Ang University College of MedicineSeoulSouth Korea
| | - Beom Joon Kim
- Department of DermatologyChung‐Ang University College of MedicineSeoulSouth Korea
| | - Kwang Ho Yoo
- Department of DermatologyChung‐Ang University College of MedicineSeoulSouth Korea
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20
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Nazıroğlu M, Öz A, Yıldızhan K. Selenium and Neurological Diseases: Focus on Peripheral Pain and TRP Channels. Curr Neuropharmacol 2021; 18:501-517. [PMID: 31903884 PMCID: PMC7457405 DOI: 10.2174/1570159x18666200106152631] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 11/26/2019] [Accepted: 01/04/2020] [Indexed: 12/18/2022] Open
Abstract
Pain is a complex physiological process that includes many components. Growing evidence supports the idea that oxidative stress and Ca2+ signaling pathways participate in pain detection by neurons. The main source of endogenous reactive oxygen species (ROS) is mitochondrial dysfunction induced by membrane depolarization, which is in turn caused by Ca2+ influx into the cytosol of neurons. ROS are controlled by antioxidants, including selenium. Selenium plays an important role in the nervous system, including the brain, where it acts as a cofactor for glutathione peroxidase and is incorporated into selenoproteins involved in antioxidant defenses. It has neuroprotective effects through modulation of excessive ROS production, inflammation, and Ca2+ overload in several diseases, including inflammatory pain, hypersensitivity, allodynia, diabetic neuropathic pain, and nociceptive pain. Ca2+ entry across membranes is mediated by different channels, including transient receptor potential (TRP) channels, some of which (e.g., TRPA1, TRPM2, TRPV1, and TRPV4) can be activated by oxidative stress and have a role in the induction of peripheral pain. The results of recent studies indicate the modulator roles of selenium in peripheral pain through inhibition of TRP channels in the dorsal root ganglia of experimental animals. This review summarizes the protective role of selenium in TRP channel regulation, Ca2+ signaling, apoptosis, and mitochondrial oxidative stress in peripheral pain induction.
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Affiliation(s)
- Mustafa Nazıroğlu
- Neuroscience Research Center, Suleyman Demirel University, Isparta, Turkey.,Department of Biophysics, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey.,Drug Discovery Unit, BSN Health, Analysis and Innovation Ltd. Inc. Teknokent, Isparta, Turkey
| | - Ahmi Öz
- Department of Biophysics, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey
| | - Kenan Yıldızhan
- Department of Biophysics, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey
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21
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Transient Receptor Potential Vanilloid in the Brain Gliovascular Unit: Prospective Targets in Therapy. Pharmaceutics 2021; 13:pharmaceutics13030334. [PMID: 33806707 PMCID: PMC7999963 DOI: 10.3390/pharmaceutics13030334] [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] [Received: 01/29/2021] [Revised: 02/20/2021] [Accepted: 02/22/2021] [Indexed: 12/25/2022] Open
Abstract
The gliovascular unit (GVU) is composed of the brain microvascular endothelial cells forming blood–brain barrier and the neighboring surrounding “mural” cells (e.g., pericytes) and astrocytes. Modulation of the GVU/BBB features could be observed in a variety of vascular, immunologic, neuro-psychiatric diseases, and cancers, which can disrupt the brain homeostasis. Ca2+ dynamics have been regarded as a major factor in determining BBB/GVU properties, and previous studies have demonstrated the role of transient receptor potential vanilloid (TRPV) channels in modulating Ca2+ and BBB/GVU properties. The physiological role of thermosensitive TRPV channels in the BBB/GVU, as well as their possible therapeutic potential as targets in treating brain diseases via preserving the BBB are reviewed. TRPV2 and TRPV4 are the most abundant isoforms in the human BBB, and TRPV2 was evidenced to play a main role in regulating human BBB integrity. Interspecies differences in TRPV2 and TRPV4 BBB expression complicate further preclinical validation. More studies are still needed to better establish the physiopathological TRPV roles such as in astrocytes, vascular smooth muscle cells, and pericytes. The effect of the chronic TRPV modulation should also deserve further studies to evaluate their benefit and innocuity in vivo.
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22
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Montero-Vilchez T, Martinez-Lopez A, Cuenca-Barrales C, Rodriguez-Tejero A, Molina-Leyva A, Arias-Santiago S. Impact of Gloves and Mask Use on Epidermal Barrier Function in Health Care Workers. Dermatitis 2021; 32:57-62. [PMID: 33449481 DOI: 10.1097/der.0000000000000682] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND Coronavirus disease 2019 has rapidly spread all over the world. Personal protective equipment (PPE) including masks and gloves is needed to avoid transmission. Adverse skin reactions associated with PPE have been described, but there is no information regarding objective measures to assess skin impairment related to PPE. OBJECTIVE The aim of the study was to evaluate the impact of using facial mask and nitrile gloves on epidermal barrier function and skin homeostasis. METHODS A cross-sectional study was designed. Thirty-four health care workers wearing nitrile gloves and a mask for 2 hours were included. Transepidermal water loss, stratum corneum hydration, erythema, and temperature were measured. RESULTS Transepidermal water loss (31.11 vs 14.24 g·m-2·h-1), temperature (33.29°C vs 32.57°C), and erythema were significantly greater at the area covered by gloves compared with the noncovered area. Transepidermal water loss (22.82 vs 13.69 g·m-2·h-1), temperature, and erythema (411.43 vs 335.52 arbitrary units) were significantly increased at the area covered by mask, whereas stratum corneum hydration was lower. Transepidermal water loss was greater at the area covered by a surgical mask than at a filtering respirator mask coded filtering facepiece 2 (27.09 vs 18.02 g·m-2·h-1, P = 0.034). CONCLUSIONS Skin homeostasis and epidermal barrier function may be impaired by gloves and mask use. High-quality PPE should be provided, and adequate skin prevention measures should be implemented to reduce epidermal barrier damage.
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Luo H, Saubamea B, Chasseigneaux S, Cochois V, Smirnova M, Glacial F, Perrière N, Chaves C, Cisternino S, Declèves X. Molecular and Functional Study of Transient Receptor Potential Vanilloid 1-4 at the Rat and Human Blood-Brain Barrier Reveals Interspecies Differences. Front Cell Dev Biol 2020; 8:578514. [PMID: 33262985 PMCID: PMC7686441 DOI: 10.3389/fcell.2020.578514] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 10/21/2020] [Indexed: 12/30/2022] Open
Abstract
Transient receptor potential vanilloid 1-4 (TRPV1-4) expression and functionality were investigated in brain microvessel endothelial cells (BMEC) forming the blood-brain barrier (BBB) from rat and human origins. In rat, Trpv1-4 were detected by qRT-PCR in the brain cortex, brain microvessels, and in primary cultures of brain microvessel endothelial cells [rat brain microvessel endothelial cells (rPBMEC)]. A similar Trpv1-4 expression profile in isolated brain microvessels and rPBMEC was found with the following order: Trpv4 > Trpv2 > Trpv3 > Trpv1. In human, TRPV1-4 were detected in the BBB cell line human cerebral microvessel endothelial cells D3 cells (hCMEC/D3) and in primary cultures of BMEC isolated from human adult and children brain resections [human brain microvascular endothelial cells (hPBMEC)], showing a similar TRPV1-4 expression profile in both hCMEC/D3 cells and hPBMECs as follow: TRPV2 > > TRPV4 > TRPV1 > TRPV3. Western blotting and immunofluorescence experiments confirmed that TRPV2 and TRPV4 are the most expressed TRPV isoforms in hCMEC/D3 cells with a clear staining at the plasma membrane. A fluorescent dye Fluo-4 AM ester was applied to record intracellular Ca2+ levels. TRPV4 functional activity was demonstrated in mediating Ca2+ influx under stimulation with the specific agonist GSK1016790A (ranging from 3 to 1000 nM, EC50 of 16.2 ± 4.5 nM), which was inhibited by the specific TRPV4 antagonist, RN1734 (30 μM). In contrast, TRPV1 was slightly activated in hCMEC/D3 cells as shown by the weak Ca2+ influx induced by capsaicin at a high concentration (3 μM), a highly potent and specific TRPV1 agonist. Heat-induced Ca2+ influx was not altered by co-treatment with a selective potent TRPV1 antagonist capsazepine (20 μM), in agreement with the low expression of TRPV1 as assessed by qRT-PCR. Our present study reveals an interspecies difference between Rat and Human. Functional contributions of TRPV1-4 subtype expression were not identical in rat and human tissues reflective of BBB integrity. TRPV2 was predominant in the human whereas TRPV4 had a larger role in the rat. This interspecies difference from a gene expression point of view should be taken into consideration when modulators of TRPV2 or TRPV4 are investigated in rat models of brain disorders.
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Affiliation(s)
- Huilong Luo
- Faculté de Pharmacie, Inserm, UMRS-1144, Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, Paris, France
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI, United States
| | - Bruno Saubamea
- Faculté de Pharmacie, Inserm, UMRS-1144, Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, Paris, France
| | - Stéphanie Chasseigneaux
- Faculté de Pharmacie, Inserm, UMRS-1144, Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, Paris, France
| | - Véronique Cochois
- Faculté de Pharmacie, Inserm, UMRS-1144, Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, Paris, France
| | - Maria Smirnova
- Faculté de Pharmacie, Inserm, UMRS-1144, Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, Paris, France
| | | | | | - Catarina Chaves
- Faculté de Pharmacie, Inserm, UMRS-1144, Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, Paris, France
| | - Salvatore Cisternino
- Faculté de Pharmacie, Inserm, UMRS-1144, Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, Paris, France
- Service Pharmacie, Assistance Publique Hôpitaux de Paris (AP-HP), Hôpital Universitaire Necker – Enfants Malades, Paris, France
| | - Xavier Declèves
- Faculté de Pharmacie, Inserm, UMRS-1144, Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, Paris, France
- Biologie du médicament et toxicologie, Assistance Publique Hôpitaux de Paris (AP-HP), Hôpital Universitaire Cochin, Paris, France
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Greco C, Leclerc-Mercier S, Chaumon S, Doz F, Hadj-Rabia S, Molina T, Boucheix C, Bodemer C. Use of Epidermal Growth Factor Receptor Inhibitor Erlotinib to Treat Palmoplantar Keratoderma in Patients With Olmsted Syndrome Caused by TRPV3 Mutations. JAMA Dermatol 2020; 156:191-195. [PMID: 31895432 DOI: 10.1001/jamadermatol.2019.4126] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Importance Olmsted syndrome is a genodermatosis characterized by painful and mutilating palmoplantar keratoderma (PPK) that progresses from infancy onward and lacks an effective treatment. It is most often caused by mutations in the transient receptor potential vanilloid 3 (TRPV3) gene. In animal models and keratinocyte cell lines, TRPV3 signaling leads to epidermal growth factor receptor (EGFR) transactivation. Objective To examine the possibility of blocking EGFR transactivation with the inhibitor erlotinib hydrochloride to treat PPK in patients with Olmsted syndrome due to TRPV3 mutations. Design, Setting, and Participants In this case series, 3 patients from 2 unrelated families who had TRPV3-mutation-associated PPK were treated with erlotinib from May 5, 2018, through May 13, 2019. Main Outcomes and Measures Clinical follow-up included evaluation of PPK progression, pain and interventions for pain, as well as erlotinib dose adjustment based on treatment effect, plasma levels, and tolerance. Results The 3 patients (2 brothers aged 15 and 17 years and a 13-year-old girl) had severe palmoplantar hyperkeratosis, intolerable pain with erythromelalgia, severe growth delay, anorexia, and insomnia, which had been progressing since infancy despite numerous therapies. Two patients were confined to wheelchairs owing to intense pain and joint restrictions because of hyperkeratosis. All patients experienced depression and did not engage in social activities. Within 3 months of initiating therapy with erlotinib, hyperkeratosis and pain disappeared. All patients were able to touch the ground with their feet, wear shoes, and walk. Anorexia and insomnia remitted and paralleled improved growth. In addition, the patients resumed social activities. These improvements were sustained across 12 months of treatment and follow-up. The doses of erlotinib used were lower than those used in oncology, and only mild to moderate adverse effects were noted. Conclusions and Relevance The findings of this study report improvement of PPK in patients with Olmsted syndrome caused by TRPV3 mutations when treated with erlotinib. Targeting EGFR transactivation with erlotinib therapy may result in clinical remission in an orphan disease that lacks an effective intervention.
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Affiliation(s)
- Céline Greco
- Department of Pain and Palliative Care Unit, Hôpital Necker-Enfants Malades, Assistance Publique Hôpitaux de Paris (APHP), Paris, France.,Université Paris Sud, Université Paris-Saclay, Inserm, UMR-S935, Villejuif, France
| | - Stéphanie Leclerc-Mercier
- Department of Pathology, Hôpital Necker-Enfants Malades, APHP, Paris, France.,Department of Dermatology, Reference Center for Genodermatoses (MAGEC), Hôpital Necker-Enfants Malades, APHP, Paris, France
| | - Sarah Chaumon
- Department of Pain and Palliative Care Unit, Hôpital Necker-Enfants Malades, Assistance Publique Hôpitaux de Paris (APHP), Paris, France
| | - François Doz
- Curie Institute, Oncology Center SIREDO (Care Innovation Research for Children, Adolescents, and Young Adults With Cancer), Paris, France
| | - Smail Hadj-Rabia
- Department of Dermatology, Reference Center for Genodermatoses (MAGEC), Hôpital Necker-Enfants Malades, APHP, Paris, France.,The Imagine Institute, U1163, Inserm, Université Paris Descartes-Sorbonne Paris Cité, Paris, France
| | - Thierry Molina
- Department of Pathology, Hôpital Necker-Enfants Malades, APHP, Paris, France.,Université Paris Descartes-Sorbonne Paris Cité, EA7324, Paris, France
| | - Claude Boucheix
- Université Paris Sud, Université Paris-Saclay, Inserm, UMR-S935, Villejuif, France
| | - Christine Bodemer
- Department of Dermatology, Reference Center for Genodermatoses (MAGEC), Hôpital Necker-Enfants Malades, APHP, Paris, France.,The Imagine Institute, U1163, Inserm, Université Paris Descartes-Sorbonne Paris Cité, Paris, France
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25
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Fernández-Carvajal A, González-Muñiz R, Fernández-Ballester G, Ferrer-Montiel A. Investigational drugs in early phase clinical trials targeting thermotransient receptor potential (thermoTRP) channels. Expert Opin Investig Drugs 2020; 29:1209-1222. [PMID: 32941080 DOI: 10.1080/13543784.2020.1825680] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Thermo transient receptor potential (thermoTRP) channels are some of the most intensely pursued therapeutic targets of the past decade. They are considered promising targets of numerous diseases including chronic pain and cancer. Modulators of these proteins, in particular TRPV1-4, TRPM8 and TRPA1, have reached clinical development, but none has been approved for clinical practice yet. AREAS COVERED The therapeutic potential of targeting thermoTRP channels is discussed. The discussion is centered on our experience and on available data found in SciFinder, PubMed, and ClinicalTrials.gov database from the past decade. This review focuses on the therapeutic progress concerning this family of channels, including strategies to improve their therapeutic index for overcoming adverse effects. EXPERT OPINION Although thermoTRPs are pivotal drug targets, translation to the clinic has faced two key problems, (i) unforeseen side effects in Phase I trials and, (ii) poor clinical efficacy in Phase II trials. Thus, there is a need for (i) an enhanced understanding of the physiological role of these channels in tissues and organs and (ii) the development of human-based pre-clinical models with higher clinical translation. Furthermore, progress in nanotechnology-based delivery strategies will positively impact thermoTRP human pharmacology.
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Affiliation(s)
- Asia Fernández-Carvajal
- Instituto De Investigación, Desarrollo E Innovación En Biotecnología Sanitaria De Elche (Idibe), Universitas Miguel Hernández , Alicante, Spain
| | | | - Gregorio Fernández-Ballester
- Instituto De Investigación, Desarrollo E Innovación En Biotecnología Sanitaria De Elche (Idibe), Universitas Miguel Hernández , Alicante, Spain
| | - Antonio Ferrer-Montiel
- Instituto De Investigación, Desarrollo E Innovación En Biotecnología Sanitaria De Elche (Idibe), Universitas Miguel Hernández , Alicante, Spain
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26
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Zhong W, Hu L, Cao X, Zhao J, Zhang X, Lee M, Wang H, Zhang J, Chen Q, Feng C, Duo L, Wang X, Tang L, Lin Z, Yang Y. Genotype‒Phenotype Correlation of TRPV3-Related Olmsted Syndrome. J Invest Dermatol 2020; 141:545-554. [PMID: 32795529 DOI: 10.1016/j.jid.2020.06.035] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 05/08/2020] [Accepted: 06/07/2020] [Indexed: 11/15/2022]
Abstract
We have previously shown that gain-of-function variations in transient receptor potential vanilloid-3 (TRPV3) underlay Olmsted syndrome, a rare hyperkeratotic skin channelopathy. In this study, we attempt to establish a genotype‒phenotype correlation in Olmsted syndrome, which has been unclear owing to the rarity and heterogeneity of the condition. We identified five previously unreported TRPV3 variations (R416Q, R416W, L655P, W692S, and L694P) and three recurrent variations (G568D, G568V, and L673F) in nine unrelated patients. Seven variants were expressed in human embryonic kidney 293 cells, and channel behavior was characterized electrophysiologically, with results compared with the clinical severity. These variant TRPV3 channels, in either homomeric or heteromeric form, exhibited differentially elevated basal open probability, increased voltage sensitivity, and cytotoxicity. Functional changes were particularly pronounced in variants corresponding to severer Olmsted syndrome (e.g., L673F and W692S) but not in mild Olmsted syndrome variants (e.g., R416Q). Interestingly, the extent of functional rescue by wild-type TRPV3 in vitro was also consistent with the clinical severity of the variants. These findings, in combination with all reported cases, indicate a preliminary genotype‒phenotype correlation, that is, variations in the S4‒S5 linker and transient receptor potential domain of TRPV3 significantly enhance channel function, causing severe phenotype, whereas other variations appear to exert milder effects on channel function and disease phenotype.
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Affiliation(s)
- Weilong Zhong
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Peking University First Hospital, Beijing, China; Department of Dermatology, Peking University Shenzhen Hospital, Shenzhen, China
| | - Linghan Hu
- Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Peking University First Hospital, Beijing, China; Peking-Tsinghua Center for Life Sciences, Beijing, China; Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China
| | - Xu Cao
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Peking University First Hospital, Beijing, China; Peking-Tsinghua Center for Life Sciences, Beijing, China
| | - Jiahui Zhao
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Peking University First Hospital, Beijing, China
| | - Xianning Zhang
- Department of Genetics, Institute of Genetics, Institute of Cell Biology, Zhejiang University School of Medicine, Hangzhou, China
| | - Mingyang Lee
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Peking University First Hospital, Beijing, China
| | - Huijun Wang
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Peking University First Hospital, Beijing, China; Peking-Tsinghua Center for Life Sciences, Beijing, China; Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China
| | - Jie Zhang
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Peking University First Hospital, Beijing, China
| | - Quan Chen
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Peking University First Hospital, Beijing, China
| | - Cheng Feng
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Peking University First Hospital, Beijing, China
| | - Lina Duo
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Peking University First Hospital, Beijing, China
| | - Xiuli Wang
- Institute of Photomedicine, Shanghai Skin Disease Hospital, Shanghai, China
| | - Li Tang
- Institute of Photomedicine, Shanghai Skin Disease Hospital, Shanghai, China
| | - Zhimiao Lin
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Peking University First Hospital, Beijing, China
| | - Yong Yang
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Peking University First Hospital, Beijing, China; Peking-Tsinghua Center for Life Sciences, Beijing, China; Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, China.
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27
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Yang P, Lu P, Luo J, Du L, Feng J, Cai T, Yuan Y, Cheng H, Hu H. Transient stimulation of TRPV4-expressing keratinocytes promotes hair follicle regeneration in mice. Br J Pharmacol 2020; 177:4181-4192. [PMID: 32542737 DOI: 10.1111/bph.15161] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 04/16/2020] [Accepted: 05/27/2020] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND AND PURPOSE Hair follicle telogen to anagen transition results in a break in cellular quiescence of the hair follicle stem cells, which subsequently promotes hair follicle regeneration. Many critical molecules and signalling pathways are involved in hair follicle cycle progression. Transient receptor potential vanilloid 4 (TRPV4) is a polymodal sensory transducer that regulates various cutaneous functions under both normal and disease conditions. However, the role of TRPV4 in hair follicle regeneration in vivo remains incompletely understood. EXPERIMENTAL APPROACH Using adult C57BL/6J mice, keratinocyte (K14Cre ; Trpv4f/f ) and macrophage (Cx3cr1Cre ; Trpv4f/f ) Trpv4 conditional knockout (cKO) mice, Trpv4-/- mice, we investigated the effect of a single intradermal injection of GSK1016790A, a potent and selective small molecule TRPV4 activator, on hair follicle regeneration. Chemical cues and signal molecules involved in hair follicle cycle progression were measured by immunofluorescence staining, quantitative RT-PCR and western blotting. KEY RESULTS Here, we show that a single intradermal injection of GSK1016790A is sufficient to induce telogen to anagen transition and hair follicle regeneration in mice by increasing the expression of the anagen-promoting growth factors and down-regulating the expression of growth factors that inhibit anagen. The action of GSK1016790A relies largely on the function of TRPV4 in skin and involves activation of downstream ERK signalling. CONCLUSION AND IMPLICATIONS Our results suggest that transient chemical activation of TRPV4 in the skin induces hair follicle regeneration in mice, which might provide an effective therapeutic strategy for the treatment of hair loss and alopecia.
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Affiliation(s)
- Pu Yang
- Department of Anesthesiology, The Center for the Study of Itch and Sensory Disorders, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Ping Lu
- Department of Anesthesiology, The Center for the Study of Itch and Sensory Disorders, Washington University School of Medicine, St. Louis, Missouri, USA.,Experimental Research Center, Dermatology Hospital, Southern Medical University, Guangzhou, China
| | - Jialie Luo
- Department of Anesthesiology, The Center for the Study of Itch and Sensory Disorders, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Lixia Du
- Department of Anesthesiology, The Center for the Study of Itch and Sensory Disorders, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Jing Feng
- Department of Anesthesiology, The Center for the Study of Itch and Sensory Disorders, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Tao Cai
- Department of Anesthesiology, The Center for the Study of Itch and Sensory Disorders, Washington University School of Medicine, St. Louis, Missouri, USA.,Department of Dermatology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yi Yuan
- Department of Anesthesiology, The Center for the Study of Itch and Sensory Disorders, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Hunter Cheng
- Department of Anesthesiology, The Center for the Study of Itch and Sensory Disorders, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Hongzhen Hu
- Department of Anesthesiology, The Center for the Study of Itch and Sensory Disorders, Washington University School of Medicine, St. Louis, Missouri, USA
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28
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Wang S, Geng Q, Huo L, Ma Y, Gao Y, Zhang W, Zhang H, Lv P, Jia Z. Transient Receptor Potential Cation Channel Subfamily Vanilloid 4 and 3 in the Inner Ear Protect Hearing in Mice. Front Mol Neurosci 2019; 12:296. [PMID: 31866822 PMCID: PMC6904345 DOI: 10.3389/fnmol.2019.00296] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Accepted: 11/20/2019] [Indexed: 01/02/2023] Open
Abstract
The transient receptor potential cation channel, vanilloid type (TRPV) 3, is a member of the TRPV subfamily that is expressed predominantly in the skin, hair follicles, and gastrointestinal tract. It is also distributed in the organ of Corti of the inner ear and colocalizes with TRPV1 or TRPV4, but its role in auditory function is unknown. In the present study, we demonstrate that TRPV3 is expressed in inner hair cells (HCs) but mainly in cochlear outer HCs in mice, with expression limited to the cytoplasm and not detected in stereocilia. We compared the number of HCs as well as distortion product otoacoustic emissions (DPOAE) and auditory brainstem response (ABR) thresholds between TRPV3 knockout (V3KO) and wild-type (V3WT) mice and found that although most mutants (72.3%) had normal hearing, a significant proportion (27.7%) showed impaired hearing associated with loss of cochlear HCs. Compensatory upregulation of TRPV4 in HCs prevented HC damage and kanamycin-induced hearing loss and preserved normal auditory function in most of these mice. Thus, TRPV4 and TRPV3 in cochlear HCs protect hearing in mice; moreover, the results suggest some functional redundancy in the functions of TRPV family members. Our findings provide novel insight into the molecular basis of auditory function in mammals that can be applied to the development of strategies to mitigate hearing loss.
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Affiliation(s)
- Shengnan Wang
- Department of Pharmacology, Hebei Medical University, Shijiazhuang, China.,Center for Innovative Drug Research and Evaluation, Institute of Medical Science and Health, Hebei Medical University, Shijiazhuang, China.,The Key Laboratory of Neural and Vascular Biology, Ministry of Education, Shijiazhuang, China.,The Key Laboratory of New Drug Pharmacology and Toxicology, Shijiazhuang, China
| | - Qiaowei Geng
- Department of Pharmacology, Hebei Medical University, Shijiazhuang, China.,Center for Innovative Drug Research and Evaluation, Institute of Medical Science and Health, Hebei Medical University, Shijiazhuang, China.,The Key Laboratory of Neural and Vascular Biology, Ministry of Education, Shijiazhuang, China.,The Key Laboratory of New Drug Pharmacology and Toxicology, Shijiazhuang, China
| | - Lifang Huo
- Department of Pharmacology, Institute of Chinese Integrative Medicine, Hebei Medical University, Shijiazhuang, China.,Center for Innovative Drug Research and Evaluation, Institute of Medical Science and Health, Hebei Medical University, Shijiazhuang, China.,The Key Laboratory of Neural and Vascular Biology, Ministry of Education, Shijiazhuang, China
| | - Yirui Ma
- Department of Pharmacology, Hebei Medical University, Shijiazhuang, China.,Center for Innovative Drug Research and Evaluation, Institute of Medical Science and Health, Hebei Medical University, Shijiazhuang, China.,The Key Laboratory of Neural and Vascular Biology, Ministry of Education, Shijiazhuang, China.,The Key Laboratory of New Drug Pharmacology and Toxicology, Shijiazhuang, China
| | - Yiting Gao
- Department of Pharmacology, Hebei Medical University, Shijiazhuang, China.,Center for Innovative Drug Research and Evaluation, Institute of Medical Science and Health, Hebei Medical University, Shijiazhuang, China.,The Key Laboratory of Neural and Vascular Biology, Ministry of Education, Shijiazhuang, China.,The Key Laboratory of New Drug Pharmacology and Toxicology, Shijiazhuang, China
| | - Wei Zhang
- Department of Pharmacology, Institute of Chinese Integrative Medicine, Hebei Medical University, Shijiazhuang, China.,Center for Innovative Drug Research and Evaluation, Institute of Medical Science and Health, Hebei Medical University, Shijiazhuang, China.,The Key Laboratory of Neural and Vascular Biology, Ministry of Education, Shijiazhuang, China
| | - Hailin Zhang
- Department of Pharmacology, Hebei Medical University, Shijiazhuang, China.,Center for Innovative Drug Research and Evaluation, Institute of Medical Science and Health, Hebei Medical University, Shijiazhuang, China.,The Key Laboratory of Neural and Vascular Biology, Ministry of Education, Shijiazhuang, China.,The Key Laboratory of New Drug Pharmacology and Toxicology, Shijiazhuang, China
| | - Ping Lv
- Department of Pharmacology, Hebei Medical University, Shijiazhuang, China.,Center for Innovative Drug Research and Evaluation, Institute of Medical Science and Health, Hebei Medical University, Shijiazhuang, China.,The Key Laboratory of Neural and Vascular Biology, Ministry of Education, Shijiazhuang, China.,The Key Laboratory of New Drug Pharmacology and Toxicology, Shijiazhuang, China
| | - Zhanfeng Jia
- Department of Pharmacology, Hebei Medical University, Shijiazhuang, China.,Center for Innovative Drug Research and Evaluation, Institute of Medical Science and Health, Hebei Medical University, Shijiazhuang, China.,The Key Laboratory of Neural and Vascular Biology, Ministry of Education, Shijiazhuang, China.,The Key Laboratory of New Drug Pharmacology and Toxicology, Shijiazhuang, China
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29
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Martínez-Juárez A, Moreno-Mendoza N. Mechanisms related to sexual determination by temperature in reptiles. J Therm Biol 2019; 85:102400. [PMID: 31657741 DOI: 10.1016/j.jtherbio.2019.102400] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 08/12/2019] [Accepted: 08/21/2019] [Indexed: 01/08/2023]
Abstract
A number of strategies have emerged that appear to relate to the evolution of mechanisms for sexual determination in vertebrates, among which are genetic sex determination caused by sex chromosomes and environmental sex determination, where environmental factors influence the phenotype of the sex of an individual. Within the reptile group, some orders such as: Chelonia, Crocodylia, Squamata and Rhynchocephalia, manifest one of the most intriguing and exciting environmental sexual determination mechanisms that exists, comprising temperature-dependent sex determination (TSD), where the temperature of incubation that the embryo experiences during its development is fundamental to establishing the sex of the individual. This makes them an excellent model for the study of sexual determination at the molecular, cellular and physiological level, as well as in terms of their implications at an evolutionary and ecological level. There are different hypotheses concerning how this process is triggered and this review aims to describe any new contributions to particular TSD hypotheses, analyzing them from the "eco-evo-devo" perspective.
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Affiliation(s)
- Adriana Martínez-Juárez
- Departamento de Biología Celular y Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, Apartado Postal 70228 México, D.F. 04510, Mexico
| | - Norma Moreno-Mendoza
- Departamento de Biología Celular y Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, Apartado Postal 70228 México, D.F. 04510, Mexico.
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30
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Macikova L, Vyklicka L, Barvik I, Sobolevsky AI, Vlachova V. Cytoplasmic Inter-Subunit Interface Controls Use-Dependence of Thermal Activation of TRPV3 Channel. Int J Mol Sci 2019; 20:E3990. [PMID: 31426314 PMCID: PMC6719031 DOI: 10.3390/ijms20163990] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 08/12/2019] [Accepted: 08/13/2019] [Indexed: 02/07/2023] Open
Abstract
The vanilloid transient receptor potential channel TRPV3 is a putative molecular thermosensor widely considered to be involved in cutaneous sensation, skin homeostasis, nociception, and pruritus. Repeated stimulation of TRPV3 by high temperatures above 50 °C progressively increases its responses and shifts the activation threshold to physiological temperatures. This use-dependence does not occur in the related heat-sensitive TRPV1 channel in which responses decrease, and the activation threshold is retained above 40 °C during activations. By combining structure-based mutagenesis, electrophysiology, and molecular modeling, we showed that chimeric replacement of the residues from the TRPV3 cytoplasmic inter-subunit interface (N251-E257) with the homologous residues of TRPV1 resulted in channels that, similarly to TRPV1, exhibited a lowered thermal threshold, were sensitized, and failed to close completely after intense stimulation. Crosslinking of this interface by the engineered disulfide bridge between substituted cysteines F259C and V385C (or, to a lesser extent, Y382C) locked the channel in an open state. On the other hand, mutation of a single residue within this region (E736) resulted in heat resistant channels. We propose that alterations in the cytoplasmic inter-subunit interface produce shifts in the channel gating equilibrium and that this domain is critical for the use-dependence of the heat sensitivity of TRPV3.
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Affiliation(s)
- Lucie Macikova
- Department of Cellular Neurophysiology, Institute of Physiology Czech Academy of Sciences, 142 20 Prague, Czech Republic
- Department of Physiology, Faculty of Science, Charles University, 128 00 Prague, Czech Republic
| | - Lenka Vyklicka
- Department of Cellular Neurophysiology, Institute of Physiology Czech Academy of Sciences, 142 20 Prague, Czech Republic
| | - Ivan Barvik
- Division of Biomolecular Physics, Institute of Physics, Faculty of Mathematics and Physics, Charles University, 121 16 Prague, Czech Republic
| | - Alexander I Sobolevsky
- Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY 10032, USA
| | - Viktorie Vlachova
- Department of Cellular Neurophysiology, Institute of Physiology Czech Academy of Sciences, 142 20 Prague, Czech Republic.
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Kumar S, Singh O, Singh U, Goswami C, Singru PS. Transient receptor potential vanilloid 1-6 (Trpv1-6) gene expression in the mouse brain during estrous cycle. Brain Res 2018; 1701:161-170. [DOI: 10.1016/j.brainres.2018.09.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 09/02/2018] [Accepted: 09/04/2018] [Indexed: 01/25/2023]
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Dong C, Paudel S, Amoh NY, Saha MS. Expression of trpv channels during Xenopus laevis embryogenesis. Gene Expr Patterns 2018; 30:64-70. [PMID: 30326274 PMCID: PMC6319392 DOI: 10.1016/j.gep.2018.10.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 09/02/2018] [Accepted: 10/09/2018] [Indexed: 01/26/2023]
Abstract
Transient receptor potential (TRP) cation channel genes code for an extensive family of conserved proteins responsible for a variety of physiological processes, including sensory perception, ion homeostasis, and chemical signal transduction. The TRP superfamily consists of seven subgroups, one of which is the transient receptor potential vanilloid (trpv) channel family. While trpv channels are relatively well studied in adult vertebrate organisms given their role in functions such as nociception, thermoregulation, and osmotic regulation in mature tissues and organ systems, relatively little is known regarding their function during embryonic development. Although there are some reports of the expression of specific trpv channels at particular stages in various organisms, there is currently no comprehensive analysis of trpv channels during embryogenesis. Here, performing in situ hybridization, we examined the spatiotemporal expression of trpv channel mRNA during early Xenopus laevis embryogenesis. Trpv channels exhibited unique patterns of embryonic expression at distinct locations including the trigeminal ganglia, spinal cord, cement gland, otic vesicle, optic vesicle, nasal placode, notochord, tailbud, proctodeum, branchial arches, epithelium, somite and the animal pole during early development. We have also observed the colocalization of trpv channels at the animal pole (trpv 2/4), trigeminal ganglia (trpv 1/2), and epithelium (trpv 5/6). These localization patterns suggest that trpv channels may play diverse roles during early embryonic development.
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Affiliation(s)
- Chen Dong
- Department of Biology, Integrated Science Center, 540 Landrum Dr., College of William and Mary, Williamsburg, VA, 23185, USA
| | - Sudip Paudel
- Department of Biology, Integrated Science Center, 540 Landrum Dr., College of William and Mary, Williamsburg, VA, 23185, USA
| | - Nana Yaa Amoh
- Department of Biology, Integrated Science Center, 540 Landrum Dr., College of William and Mary, Williamsburg, VA, 23185, USA
| | - Margaret S Saha
- Department of Biology, Integrated Science Center, 540 Landrum Dr., College of William and Mary, Williamsburg, VA, 23185, USA.
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33
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Fromy B, Josset-Lamaugarny A, Aimond G, Pagnon-Minot A, Marics I, Tattersall GJ, Moqrich A, Sigaudo-Roussel D. Disruption of TRPV3 Impairs Heat-Evoked Vasodilation and Thermoregulation: A Critical Role of CGRP. J Invest Dermatol 2018; 138:688-696. [DOI: 10.1016/j.jid.2017.10.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 09/08/2017] [Accepted: 10/08/2017] [Indexed: 12/24/2022]
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Castillo K, Diaz-Franulic I, Canan J, Gonzalez-Nilo F, Latorre R. Thermally activated TRP channels: molecular sensors for temperature detection. Phys Biol 2018; 15:021001. [PMID: 29135465 DOI: 10.1088/1478-3975/aa9a6f] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Temperature sensing is one of the oldest capabilities of living organisms, and is essential for sustaining life, because failure to avoid extreme noxious temperatures can result in tissue damage or death. A subset of members of the transient receptor potential (TRP) ion channel family is finely tuned to detect temperatures ranging from extreme cold to noxious heat, giving rise to thermoTRP channels. Structural and functional experiments have shown that thermoTRP channels are allosteric proteins, containing different domains that sense changes in temperature, among other stimuli, triggering pore opening. Although temperature-dependence is well characterized in thermoTRP channels, the molecular nature of temperature-sensing elements remains unknown. Importantly, thermoTRP channels are involved in pain sensation, related to pathological conditions. Here, we provide an overview of thermoTRP channel activation. We also discuss the structural and functional evidence supporting the existence of an intrinsic temperature sensor in this class of channels, and we explore the basic thermodynamic principles for channel activation. Finally, we give a view of their role in painful pathophysiological conditions.
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Affiliation(s)
- Karen Castillo
- Facultad de Ciencias, Centro Interdisciplinario de Neurociencia de Valparaíso, Universidad de Valparaíso, Valparaíso 2366103, Chile. www.cinv.cl
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35
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Vyklicka L, Boukalova S, Macikova L, Chvojka S, Vlachova V. The human transient receptor potential vanilloid 3 channel is sensitized via the ERK pathway. J Biol Chem 2017; 292:21083-21091. [PMID: 29084846 DOI: 10.1074/jbc.m117.801167] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 10/26/2017] [Indexed: 11/06/2022] Open
Abstract
The transient receptor potential vanilloid 3 (TRPV3) channel is a Ca2+-permeable thermosensitive ion channel widely expressed in keratinocytes, where together with epidermal growth factor receptor (EGFR) forms a signaling complex regulating epidermal homeostasis. Proper signaling through this complex is achieved and maintained via several pathways in which TRPV3 activation is absolutely required. Results of recent studies have suggested that low-level constitutive activity of TRPV3 induces EGFR-dependent signaling that, in turn, amplifies TRPV3 via activation of the mitogen-activated protein kinase ERK in a positive feedback loop. Here, we explored the molecular mechanism that increases TRPV3 activity through EGFR activation. We used mutagenesis and whole-cell patch clamp experiments on TRPV3 channels endogenously expressed in an immortalized human keratinocyte cell line (HaCaT) and in transiently transfected HEK293T cells and found that the sensitizing effect of EGFR on TRPV3 is mediated by ERK. We observed that ERK-mediated phosphorylation of TRPV3 alters its responsiveness to repeated chemical stimuli. Among several putative ERK phosphorylation sites, we identified threonine 264 in the N-terminal ankyrin repeat domain as the most critical site for the ERK-dependent modulation of TRPV3 channel activity. Of note, Thr264 is in close vicinity to a structurally and functionally important TRPV3 region comprising an atypical finger 3 and oxygen-dependent hydroxylation site. In summary, our findings indicate that Thr264 in TRPV3 is a key ERK phosphorylation site mediating EGFR-induced sensitization of the channel to stimulate signaling pathways involved in regulating skin homeostasis.
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Affiliation(s)
- Lenka Vyklicka
- From the Department of Cellular Neurophysiology, Institute of Physiology Czech Academy of Sciences, 142 20 Prague 4, Czech Republic
| | - Stepana Boukalova
- From the Department of Cellular Neurophysiology, Institute of Physiology Czech Academy of Sciences, 142 20 Prague 4, Czech Republic
| | - Lucie Macikova
- From the Department of Cellular Neurophysiology, Institute of Physiology Czech Academy of Sciences, 142 20 Prague 4, Czech Republic
| | - Stepan Chvojka
- From the Department of Cellular Neurophysiology, Institute of Physiology Czech Academy of Sciences, 142 20 Prague 4, Czech Republic
| | - Viktorie Vlachova
- From the Department of Cellular Neurophysiology, Institute of Physiology Czech Academy of Sciences, 142 20 Prague 4, Czech Republic
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Corneal Nerve Fiber Structure, Its Role in Corneal Function, and Its Changes in Corneal Diseases. BIOMED RESEARCH INTERNATIONAL 2017; 2017:3242649. [PMID: 29238714 PMCID: PMC5697388 DOI: 10.1155/2017/3242649] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 09/27/2017] [Accepted: 10/15/2017] [Indexed: 01/04/2023]
Abstract
Recently, in vivo confocal microscopy is used to examine the human corneal nerve fibers morphology. Corneal nerve fiber architecture and its role are studied in healthy and pathological conditions. Corneal nerves of rats were studied by nonspecific acetylcholinesterase (NsAchE) staining. NsAchE-positive subepithelial (stromal) nerve fiber has been found to be insensitive to capsaicin. Besides, NsAchE-negative but capsaicin-sensitive subbasal nerve (leash) fibers formed thick mesh-like structure showing close interconnections and exhibit both isolectin B4- and transient receptor potential vanilloid channel 1- (TRPV1-) positive. TRPV1, TRPV3, TRPA (ankyrin) 1, and TRPM (melastatin) 8 are expressed in corneal nerve fibers. Besides the corneal nerve fibers, the expressions of TRPV (1, 3, and 4), TRPC (canonical) 4, and TRPM8 are demonstrated in the corneal epithelial cell membrane. The realization of the importance of TRP channels acting as polymodal sensors of environmental stresses has identified potential drug targets for corneal disease. The pathophysiological conditions of corneal diseases are associated with disruption of normal tissue innervation, especially capsaicin-sensitive small sensory nerve fibers. The relationships between subbasal corneal nerve fiber morphology and neurotrophic keratopathy in corneal diseases are well studied. The recommended treatment for neurotrophic keratopathy is administration of preservative free eye drops.
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Nam Y, Kim HJ, Kim YM, Chin YW, Kim YK, Bae HS, Nam JH, Kim WK. Activation of transient receptor potential vanilloid 3 by the methanolic extract of Schisandra chinensis fruit and its chemical constituent γ-schisandrin. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2017; 21:309-316. [PMID: 28461773 PMCID: PMC5409111 DOI: 10.4196/kjpp.2017.21.3.309] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 12/29/2016] [Accepted: 12/29/2016] [Indexed: 01/12/2023]
Abstract
Transient receptor potential vanilloid 3 (TRPV3) is a non-selective cation channel with modest permeability to calcium ions. It is involved in intracellular calcium signaling and is therefore important in processes such as thermal sensation, skin barrier formation, and wound healing. TRPV3 was initially proposed as a warm temperature sensor. It is activated by synthetic small-molecule chemicals and plant-derived natural compounds such as camphor and eugenol. Schisandra chinensis (Turcz.) Baill (SC) has diverse pharmacological properties including antiallergic, anti-inflammatory, and wound healing activities. It is extensively used as an oriental herbal medicine for the treatment of various diseases. In this study, we investigated whether SC fruit extracts and seed oil, as well as four compounds isolated from the fruit can activate the TRPV3 channel. By performing whole-cell patch clamp recording in HEK293T cells overexpressing TRPV3, we found that the methanolic extract of SC fruit has an agonistic effect on the TRPV3 channel. Furthermore, electrophysiological analysis revealed that γ-schisandrin, one of the isolated compounds, activated TRPV3 at a concentration of 30 µM. In addition, γ-schisandrin (~100 µM) increased cytoplasmic Ca2+ concentrations by approximately 20% in response to TRPV3 activation. This is the first report to indicate that SC extract and γ-schisandrin can modulate the TRPV3 channel. This report also suggests a mechanism by which γ-schisandrin acts as a therapeutic agent against TRPV3-related diseases.
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Affiliation(s)
- Yuran Nam
- Department of Physiology, Dongguk University College of Medicine, Gyeongju 38066, Korea.,Channelopathy Research Center (CRC), Dongguk University College of Medicine, Goyang 10326, Korea
| | - Hyun Jong Kim
- Department of Physiology, Dongguk University College of Medicine, Gyeongju 38066, Korea.,Channelopathy Research Center (CRC), Dongguk University College of Medicine, Goyang 10326, Korea
| | - Young-Mi Kim
- College of Pharmacy and Integrated Research Institute for Drug Development, Dongguk University-Seoul, Goyang 10326, Korea
| | - Young-Won Chin
- College of Pharmacy and Integrated Research Institute for Drug Development, Dongguk University-Seoul, Goyang 10326, Korea
| | - Yung Kyu Kim
- Department of Physiology, Dongguk University College of Medicine, Gyeongju 38066, Korea
| | - Hyo Sang Bae
- Department of Sasang Constitutional Medicine, College of Korean Medicine, Dongguk University, Goyang 10326, Korea
| | - Joo Hyun Nam
- Department of Physiology, Dongguk University College of Medicine, Gyeongju 38066, Korea.,Channelopathy Research Center (CRC), Dongguk University College of Medicine, Goyang 10326, Korea
| | - Woo Kyung Kim
- Channelopathy Research Center (CRC), Dongguk University College of Medicine, Goyang 10326, Korea.,Department of Internal Medicine, Graduate School of Medicine, Dongguk University, Goyang 10326, Korea
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Modulation of TRP Channel Activity by Hydroxylation and Its Therapeutic Potential. Pharmaceuticals (Basel) 2017; 10:ph10020035. [PMID: 28346371 PMCID: PMC5490392 DOI: 10.3390/ph10020035] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 03/15/2017] [Accepted: 03/24/2017] [Indexed: 12/15/2022] Open
Abstract
Two transient receptor potential (TRP) channels—TRPA1 and TRPV3—are post-translationally hydroxylated, resulting in oxygen-dependent regulation of channel activity. The enzymes responsible are the HIF prolyl hydroxylases (PHDs) and the asparaginyl hydroxylase factor inhibiting HIF (FIH). The PHDs and FIH are well characterized for their hydroxylation of the hypoxic inducible transcription factors (HIFs), mediating their hypoxic regulation. Consequently, these hydroxylases are currently being targeted therapeutically to modulate HIF activity in anemia, inflammation, and ischemic disease. Modulating the HIFs by targeting these hydroxylases may result in both desirable and undesirable effects on TRP channel activity, depending on the physiological context. For the best outcomes, these hydroxylases could be therapeutically targeted in pathologies where activation of both the HIFs and the relevant TRP channels are predicted to independently achieve positive outcomes, such as wound healing and obesity.
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Pollastro F, Golin S, Chianese G, Putra MY, Schiano Moriello A, De Petrocellis L, García V, Munoz E, Taglialatela-Scafati O, Appendino G. Neuroactive and Anti-inflammatory Frankincense Cembranes: A Structure-Activity Study. JOURNAL OF NATURAL PRODUCTS 2016; 79:1762-1768. [PMID: 27352042 DOI: 10.1021/acs.jnatprod.6b00141] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
An expeditious isolation method for the cembrane diterpene alcohols incensol (1a) and serratol (2) has been developed from respectively African and Indian frankincense. The two native alcohols and a series of semisynthetic derivatives of incensol were evaluated for transient receptor potential vanilloid 3 (TRPV3) activation and the inhibition of NF-κB, the putative molecular targets underlying the psychotropic and anti-inflammatory activities of incensol acetate (IA, 1b). Serratol (2) was the most potent TRPV3 activator, outperforming by 2 orders of magnitude the reference agonist thymol and by 1 order of magnitude incensol acetate (1b). Acylation, epimerization, and oxidation did not significantly improve the affinity of incensol for TRPV3, while NF-κB inhibition, marginal for both natural alcohols, could be improved by esterification of incensol (1a) with lipophilic acids. Interestingly, incensol (1a) but not IA (1b) was a potent inhibitor of STAT3, raising the possibility that hydrolysis to incensol (1a) might be involved in the in vivo biological activity of IA (1b). Serratol was not amenable to chemical modification, but some marine cembranoids related to the frankincense diterpenoids showed a certain degree of TRPV3-activating properties, qualifying the aliphatic macrocyclic cembrane skeleton as a selective chemotype to explore the pharmacology of TRPV3, a thermo-TRP otherwise resistant to modulation by small molecules.
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Affiliation(s)
- Federica Pollastro
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale , Largo Donegani 2, 28100 Novara, Italy
| | - Samantha Golin
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale , Largo Donegani 2, 28100 Novara, Italy
| | - Giuseppina Chianese
- Dipartimento di Farmacia, Università di Napoli Federico II , Via Montesano 49, 80131 Napoli, Italy
| | - Masteria Yunovilsa Putra
- Dipartimento di Farmacia, Università di Napoli Federico II , Via Montesano 49, 80131 Napoli, Italy
| | - Aniello Schiano Moriello
- Endocannabinoid Research Group, Institute of Biomolecular Chemistry, CNR , Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy
| | - Luciano De Petrocellis
- Endocannabinoid Research Group, Institute of Biomolecular Chemistry, CNR , Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy
| | - Victor García
- Maimonides Biomedical Research Institute of Córdoba, Reina Sofía University Hospital, Department of Cell Biology, Physiology and Immunology, University of Córdoba , Avenida Menéndez Pidal s/n, 14004 Córdoba, Spain
| | - Eduardo Munoz
- Maimonides Biomedical Research Institute of Córdoba, Reina Sofía University Hospital, Department of Cell Biology, Physiology and Immunology, University of Córdoba , Avenida Menéndez Pidal s/n, 14004 Córdoba, Spain
| | | | - Giovanni Appendino
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale , Largo Donegani 2, 28100 Novara, Italy
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Zemkova H, Tomić M, Kucka M, Aguilera G, Stojilkovic SS. Spontaneous and CRH-Induced Excitability and Calcium Signaling in Mice Corticotrophs Involves Sodium, Calcium, and Cation-Conducting Channels. Endocrinology 2016; 157:1576-89. [PMID: 26901094 PMCID: PMC4816721 DOI: 10.1210/en.2015-1899] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Transgenic mice expressing the tdimer2(12) form of Discosoma red fluorescent protein under control of the proopiomelanocortin gene's regulatory elements are a useful model for studying corticotrophs. Using these mice, we studied the ion channels and mechanisms controlling corticotroph excitability. Corticotrophs were either quiescent or electrically active, with a 22-mV difference in the resting membrane potential (RMP) between the 2 groups. In quiescent cells, CRH depolarized the membrane, leading to initial single spiking and sustained bursting; in active cells, CRH further facilitated or inhibited electrical activity and calcium spiking, depending on the initial activity pattern and CRH concentration. The stimulatory but not inhibitory action of CRH on electrical activity was mimicked by cAMP independently of the presence or absence of arachidonic acid. Removal of bath sodium silenced spiking and hyperpolarized the majority of cells; in contrast, the removal of bath calcium did not affect RMP but reduced CRH-induced depolarization, which abolished bursting electrical activity and decreased the spiking frequency but not the amplitude of single spikes. Corticotrophs with inhibited voltage-gated sodium channels fired calcium-dependent action potentials, whereas cells with inhibited L-type calcium channels fired sodium-dependent spikes; blockade of both channels abolished spiking without affecting the RMP. These results indicate that the background voltage-insensitive sodium conductance influences RMP, the CRH-depolarization current is driven by a cationic conductance, and the interplay between voltage-gated sodium and calcium channels plays a critical role in determining the status and pattern of electrical activity and calcium signaling.
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Affiliation(s)
- Hana Zemkova
- Department of Cellular and Molecular Neuroendocrinology, Institute of Physiology Academy of Sciences of the Czech Republic, 142 20 Prague 4, Czech Republic (H.Z.); and Sections on Cellular Signaling (H.Z., M.T., M.K., S.S.S.) and Endocrine Physiology (G.A.), Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892-4510
| | - Melanija Tomić
- Department of Cellular and Molecular Neuroendocrinology, Institute of Physiology Academy of Sciences of the Czech Republic, 142 20 Prague 4, Czech Republic (H.Z.); and Sections on Cellular Signaling (H.Z., M.T., M.K., S.S.S.) and Endocrine Physiology (G.A.), Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892-4510
| | - Marek Kucka
- Department of Cellular and Molecular Neuroendocrinology, Institute of Physiology Academy of Sciences of the Czech Republic, 142 20 Prague 4, Czech Republic (H.Z.); and Sections on Cellular Signaling (H.Z., M.T., M.K., S.S.S.) and Endocrine Physiology (G.A.), Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892-4510
| | - Greti Aguilera
- Department of Cellular and Molecular Neuroendocrinology, Institute of Physiology Academy of Sciences of the Czech Republic, 142 20 Prague 4, Czech Republic (H.Z.); and Sections on Cellular Signaling (H.Z., M.T., M.K., S.S.S.) and Endocrine Physiology (G.A.), Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892-4510
| | - Stanko S Stojilkovic
- Department of Cellular and Molecular Neuroendocrinology, Institute of Physiology Academy of Sciences of the Czech Republic, 142 20 Prague 4, Czech Republic (H.Z.); and Sections on Cellular Signaling (H.Z., M.T., M.K., S.S.S.) and Endocrine Physiology (G.A.), Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892-4510
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