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Hunt M, Wang N, Pupinyo N, Curman P, Torres M, Jebril W, Chatzinikolaou M, Lorent J, Silberberg G, Bansal R, Burner T, Zhou J, Kimeswenger S, Hoetzenecker W, Choate K, Bachar-Wikstrom E, Wikstrom JD. Dantrolene corrects cellular disease features of Darier disease and may be a novel treatment. EMBO Mol Med 2024:10.1038/s44321-024-00104-3. [PMID: 39060641 DOI: 10.1038/s44321-024-00104-3] [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: 06/05/2023] [Revised: 06/26/2024] [Accepted: 07/04/2024] [Indexed: 07/28/2024] Open
Abstract
Darier disease (DD) is a rare severe acantholytic skin disease caused by mutations in the ATP2A2 gene that encodes for the sarco/endoplasmic reticulum calcium ATPase isoform 2 (SERCA2). SERCA2 maintains endoplasmic reticulum calcium homeostasis by pumping calcium into the ER, critical for regulating cellular calcium dynamics and cellular function. To date, there is no treatment that specifically targets the disease mechanisms in DD. Dantrolene sodium (Dl) is a ryanodine receptor antagonist that inhibits calcium release from ER to increase ER calcium levels and is currently used for non-dermatological indications. In this study, we first identified dysregulated genes and molecular pathways in DD patient skin, demonstrating downregulation of cell adhesion and calcium homeostasis pathways, as well as upregulation of ER stress and apoptosis. We then show in various in vitro models of DD and SERCA2 inhibition that Dl aided in the retention of ER calcium and promoted cell adhesion. In addition, Dl treatment reduced ER stress and suppressed apoptosis. Our findings suggest that Dl specifically targets pathogenic mechanisms of DD and may be a potential treatment.
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Affiliation(s)
- Matthew Hunt
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
| | - Nuoqi Wang
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
| | - Naricha Pupinyo
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
| | - Philip Curman
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
- Dermato-Venereology Clinic, Karolinska University Hospital, Stockholm, Sweden
- Department of Medical Epidemiology and Biostatistics (Solna), Karolinska Institutet, Stockholm, Sweden
| | - Monica Torres
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
- Dermato-Venereology Clinic, Karolinska University Hospital, Stockholm, Sweden
| | - William Jebril
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
- Dermato-Venereology Clinic, Karolinska University Hospital, Stockholm, Sweden
| | - Maria Chatzinikolaou
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
| | - Julie Lorent
- National Bioinformatics Infrastructure Sweden (NBIS), Science for Life Laboratory, Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Sweden
| | - Gilad Silberberg
- Bioinformatics & Computational Biology Research Operations, Champions Oncology Inc, Rehovot, Israel
| | - Ritu Bansal
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
| | - Teresa Burner
- Johannes Kepler University Linz, Kepler University Hospital Linz, Department of Dermatology, Linz, Austria
| | - Jing Zhou
- Department of Dermatology, Genetics, and Pathology, Yale University School of Medicine, New Haven, CT, USA
| | - Susanne Kimeswenger
- Johannes Kepler University Linz, Kepler University Hospital Linz, Department of Dermatology, Linz, Austria
| | - Wolfram Hoetzenecker
- Johannes Kepler University Linz, Kepler University Hospital Linz, Department of Dermatology, Linz, Austria
| | - Keith Choate
- Department of Dermatology, Genetics, and Pathology, Yale University School of Medicine, New Haven, CT, USA
| | - Etty Bachar-Wikstrom
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden.
| | - Jakob D Wikstrom
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden.
- Dermato-Venereology Clinic, Karolinska University Hospital, Stockholm, Sweden.
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Zaver SA, Sarkar MK, Egolf S, Zou J, Tiwaa A, Capell BC, Gudjonsson JE, Simpson CL. Targeting SERCA2 in organotypic epidermis reveals MEK inhibition as a therapeutic strategy for Darier disease. JCI Insight 2023; 8:e170739. [PMID: 37561594 PMCID: PMC10561730 DOI: 10.1172/jci.insight.170739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 08/08/2023] [Indexed: 08/12/2023] Open
Abstract
Mutation of the ATP2A2 gene encoding sarco-endoplasmic reticulum calcium ATPase 2 (SERCA2) was linked to Darier disease more than 2 decades ago; however, there remain no targeted therapies for this disorder causing recurrent skin blistering and infections. Since Atp2a2-knockout mice do not phenocopy its pathology, we established a human tissue model of Darier disease to elucidate its pathogenesis and identify potential therapies. Leveraging CRISPR/Cas9, we generated human keratinocytes lacking SERCA2, which replicated features of Darier disease, including weakened intercellular adhesion and defective differentiation in organotypic epidermis. To identify pathogenic drivers downstream of SERCA2 depletion, we performed RNA sequencing and proteomics analysis. SERCA2-deficient keratinocytes lacked desmosomal and cytoskeletal proteins required for epidermal integrity and exhibited excess MAPK signaling, which modulates keratinocyte adhesion and differentiation. Immunostaining patient biopsies substantiated these findings, with lesions showing keratin deficiency, cadherin mislocalization, and ERK hyperphosphorylation. Dampening ERK activity with MEK inhibitors rescued adhesive protein expression and restored keratinocyte sheet integrity despite SERCA2 depletion or chemical inhibition. In sum, coupling multiomic analysis with human organotypic epidermis as a preclinical model, we found that SERCA2 haploinsufficiency disrupts critical adhesive components in keratinocytes via ERK signaling and identified MEK inhibition as a treatment strategy for Darier disease.
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Affiliation(s)
- Shivam A. Zaver
- Division of Dermatology, Department of Medicine, and
- Medical Scientist Training Program, University of Washington, Seattle, Washington, USA
| | - Mrinal K. Sarkar
- Department of Dermatology, University of Michigan, Ann Arbor, Michigan, USA
| | - Shaun Egolf
- Department of Dermatology, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - Jonathan Zou
- Department of Dermatology, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - Afua Tiwaa
- Division of Dermatology, Department of Medicine, and
| | - Brian C. Capell
- Department of Dermatology, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | | | - Cory L. Simpson
- Division of Dermatology, Department of Medicine, and
- Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, Washington, USA
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Zaver SA, Sarkar MK, Egolf S, Zou J, Tiwaa A, Capell BC, Gudjonsson JE, Simpson CL. Targeting SERCA2 in organotypic epidermis reveals MEK inhibition as a therapeutic strategy for Darier disease. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.07.531620. [PMID: 36945477 PMCID: PMC10028894 DOI: 10.1101/2023.03.07.531620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
Mutation of the ATP2A2 gene encoding sarco-endoplasmic reticulum calcium ATPase 2 (SERCA2) was linked to Darier disease more than two decades ago; however, there remain no targeted therapies for this disorder causing recurrent skin blistering and infections. Since Atp2a2 knockout mice do not phenocopy its pathology, we established a human tissue model of Darier disease to elucidate its pathogenesis and identify potential therapies. Leveraging CRISPR/Cas9, we generated human keratinocytes lacking SERCA2, which replicated features of Darier disease, including weakened intercellular adhesion and defective differentiation in organotypic epidermis. To identify pathogenic drivers downstream of SERCA2 depletion, we performed RNA sequencing and proteomic analysis. SERCA2-deficient keratinocytes lacked desmosomal and cytoskeletal proteins required for epidermal integrity and exhibited excess MAP kinase signaling, which modulates keratinocyte adhesion and differentiation. Immunostaining patient biopsies substantiated these findings with lesions showing keratin deficiency, cadherin mis-localization, and ERK hyper-phosphorylation. Dampening ERK activity with MEK inhibitors rescued adhesive protein expression and restored keratinocyte sheet integrity despite SERCA2 depletion or chemical inhibition. In sum, coupling multi-omic analysis with human organotypic epidermis as a pre-clinical model, we found that SERCA2 haploinsufficiency disrupts critical adhesive components in keratinocytes via ERK signaling and identified MEK inhibition as a treatment strategy for Darier disease.
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Nanoparticulate System Based on Calcium-Crosslinked Carbomer Retards Percutaneous Drug Permeation: New Insight Into Skin Barrier Functions. Pharm Res 2022; 39:3331-3343. [PMID: 36229583 DOI: 10.1007/s11095-022-03410-y] [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: 08/14/2022] [Accepted: 09/30/2022] [Indexed: 12/27/2022]
Abstract
BACKGROUND The stratum corneum poses a formidable barrier for dermal and transdermal delivery of drugs. Besides the stratum corneum barrier, the viable epidermis poses another challenge to pharmaceutical formulators. A drug is probably transdermally permeable if it rapidly crosses the epidermal secondary barrier, while stimulation of lamellar body secretion from granular cells and intracellular release of Ca++ from endoplasmic reticulum (ER) result in retardation. OBJECTIVE To evaluate the skin permeability of lidocaine HCl loaded in nanoparticles made of carbomer calcified with calcium gluconate, while figuring out the physiological mechanism that regulates the Ca++ related skin barrier function. METHODS Lidocaine hydrochloride was loaded in a nanoparticulate system based on calcified carbomer, fabricated by using a water-in-oil microemulsion as a precursor. In vitro release and percutaneous permeation testing were carried out to compare between calcified and non-calcified nanoparticles. In addition, comparison was also made between calcified nanoparticles using carbomer gels prepared at two pH values and at two different ratios of Ca++/carbomer. RESULTS A unique structure of the calcified nanoparticles has been proposed, in which the carbomer nanoparticles are partially coated by gluconate ions through hydrogen bonding and partially through ionic interactions with calcium ions. Although the in vitro release data showed no difference between non-calcified and calcified carbomer nanoparticles, a calcium-related phenomenon of skin retardation has been revealed. CONCLUSIONS It has been proposed that stimulation of lamellar body secretion from granular cells and Ca++ release from ER, which is elicited by the calcium gluconate-coated nanoparticles, result in dermal retardation of lidocaine.
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Abstract
Epidermal barrier formation and the maintenance of barrier homeostasis are essential to protect us from the external environments and organisms. Moreover, impaired keratinocytes differentiation and dysfunctional skin barrier can be the primary causes or aggravating factors for many inflammatory skin diseases including atopic dermatitis and psoriasis. Therefore, understanding the regulation mechanisms of keratinocytes differentiation and skin barrier homeostasis is important to understand many skin diseases and establish an effective treatment strategy. Calcium ions (Ca2+) and their concentration gradient in the epidermis are essential in regulating many skin functions, including keratinocyte differentiation, skin barrier formation, and permeability barrier homeostasis. Recent studies have suggested that the intracellular Ca2+ stores such as the endoplasmic reticulum (ER) are the major components that form the epidermal calcium gradient and the ER calcium homeostasis is crucial for regulating keratinocytes differentiation, intercellular junction formation, antimicrobial barrier, and permeability barrier homeostasis. Thus, both Ca2+ release from intracellular stores, such as the ER and Ca2+ influx mechanisms are important in skin barrier. In addition, growing evidences identified the functional existence and the role of many types of calcium channels which mediate calcium flux in keratinocytes. In this review, the origin of epidermal calcium gradient and their role in the formation and regulation of skin barrier are focused. We also focus on the role of ER calcium homeostasis in skin barrier. Furthermore, the distribution and role of epidermal calcium channels, including transient receptor potential channels, store-operated calcium entry channel Orai1, and voltage-gated calcium channels in skin barrier are discussed.
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Affiliation(s)
- Sang Eun Lee
- Department of Dermatology and Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Seung Hun Lee
- Department of Dermatology and Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea
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Duan XQ, Li YH, Zhang XY, Zhao ZT, Wang Y, Wang H, Li GS, Jing L. Mechanisms of Intracellular Calcium Homeostasis in MC3T3-E1 Cells and Bone Tissues of Sprague-Dawley Rats Exposed to Fluoride. Biol Trace Elem Res 2016; 170:331-9. [PMID: 26276564 DOI: 10.1007/s12011-015-0465-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 07/29/2015] [Indexed: 10/23/2022]
Abstract
Calcium homeostasis of osteoblasts (OBs) has an important role in the physiology and pathology of bone tissue. In order to study the mechanisms of intracellular calcium homeostasis, MC3T3-E1 cells and Sprague-Dawley rats were treated with different concentrations of fluoride. Then, we examined intracellular-free calcium ion ([Ca(2+)]i) in MC3T3-E1 cells as well as mRNA and protein levels of Cav1.2, the main subunit of L-type voltage-dependent calcium channels (VDCCs), Na(+)/Ca(2+) exchange carriers (NCS), and plasma membrane Ca(2+)-ATPase (PMCA), inositol 1,4,5-trisphosphate receptor (IP3R) channels, sarco/endoplasmic reticulum calcium ATPase 2b (SERCA2b)/ATP2A2 in vitro, and rat bone tissues in vivo. Our results showed that [Ca(2+)]i of fluoride-treated OBs increased in a concentration-dependent manner with an increase in the concentration of fluoride. We also found that the low dose of fluoride led to high expression levels of Cav1.2, NCS-1, and PMCA and low expression levels of IP3R and SERCA2b/ATP2A2, while the high dose of fluoride induced an increase in SERCA2b/ATP2A2 levels and decrease in Cav1.2, PMCA, NCS-1, and IP3R levels. These results demonstrate that calcium channels and calcium pumps of plasma and endoplasmic reticulum (ER) membranes keep intracellular calcium homeostasis by regulating Cav1.2, NCS-1, PMCA, IP3R, and SERCA2b/ATP2A2 expression.
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Affiliation(s)
- Xiao-qin Duan
- The Second Hospital Norman Bethune of Jilin University, Changchun, 130041, People's Republic of China
| | - Yan-hui Li
- The Second Hospital Norman Bethune of Jilin University, Changchun, 130041, People's Republic of China
| | - Xiu-yun Zhang
- Institute of Endemic Disease of Jilin University, 1163 Xinmin Street, Changchun, 130021, People's Republic of China
| | - Zhi-tao Zhao
- Institute of Endemic Disease of Jilin University, 1163 Xinmin Street, Changchun, 130021, People's Republic of China
| | - Ying Wang
- The First Hospital Norman Bethune of Jilin University, Changchun, 130021, People's Republic of China
| | - Huan Wang
- The Second Hospital Norman Bethune of Jilin University, Changchun, 130041, People's Republic of China
| | - Guang-sheng Li
- Institute of Endemic Disease of Jilin University, 1163 Xinmin Street, Changchun, 130021, People's Republic of China
| | - Ling Jing
- Institute of Endemic Disease of Jilin University, 1163 Xinmin Street, Changchun, 130021, People's Republic of China.
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Gara RK, Srivastava VK, Duggal S, Bagga JK, Bhatt M, Sanyal S, Mishra DP. Shikonin selectively induces apoptosis in human prostate cancer cells through the endoplasmic reticulum stress and mitochondrial apoptotic pathway. J Biomed Sci 2015; 22:26. [PMID: 25879420 PMCID: PMC4389804 DOI: 10.1186/s12929-015-0127-1] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2014] [Accepted: 03/06/2015] [Indexed: 12/12/2022] Open
Abstract
Background Despite the recent progress in screening and therapy, a majority of prostate cancer cases eventually attain hormone refractory and chemo-resistant attributes. Conventional chemotherapeutic strategies are effective at very high doses for only palliative management of these prostate cancers. Therefore chemo-sensitization of prostate cancer cells could be a promising strategy for increasing efficacy of the conventional chemotherapeutic agents in prostate cancer patients. Recent studies have indicated that the chemo-preventive natural agents restore the pro-apoptotic protein expression and induce endoplasmic reticulum stress (ER stress) leading to the inhibition of cellular proliferation and activation of the mitochondrial apoptosis in prostate cancer cells. Therefore reprogramming ER stress-mitochondrial dependent apoptosis could be a potential approach for management of hormone refractory chemoresistant prostate cancers. We aimed to study the effects of the natural naphthoquinone Shikonin in human prostate cancer cells. Results The results indicated that Shikonin induces apoptosis in prostate cancer cells through the dual induction of the endoplasmic reticulum stress and mitochondrial dysfunction. Shikonin induced ROS generation and activated ER stress and calpain activity. Moreover, addition of antioxidants attenuated these effects. Shikonin also induced the mitochondrial apoptotic pathway mediated through the enhanced expression of the pro-apoptotic Bax and inhibition of Bcl-2, disruption of the mitochondrial membrane potential (MMP) followed by the activation of caspase-9, caspase-3, and PARP cleavage. Conclusion The results suggest that shikonin could be useful in the therapeutic management of hormone refractory prostate cancers due to its modulation of the pro-apoptotic ER stress and mitochondrial apoptotic pathways. Electronic supplementary material The online version of this article (doi:10.1186/s12929-015-0127-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Rishi Kumar Gara
- Cell Death Research Laboratory, Endocrinology Division CSIR-Central Drug Research Institute, Lucknow, 226031, India. .,Center for Cancer Research, UTHSC, Memphis, TN, USA.
| | | | - Shivali Duggal
- Department of Radiotherapy, King George Medical University, Lucknow, 226003, India.
| | - Jaspreet Kaur Bagga
- Cell Death Research Laboratory, Endocrinology Division CSIR-Central Drug Research Institute, Lucknow, 226031, India.
| | - Mlb Bhatt
- Department of Radiotherapy, King George Medical University, Lucknow, 226003, India.
| | - Sabyasachi Sanyal
- Division of Biochemistry, CSIR-Central Drug Research Institute, Lucknow, 226031, India.
| | - Durga Prasad Mishra
- Cell Death Research Laboratory, Endocrinology Division CSIR-Central Drug Research Institute, Lucknow, 226031, India.
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