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Tao S, Hulpiau P, Wagner LE, Witschas K, Yule DI, Bultynck G, Leybaert L. IP3RPEP6, a novel peptide inhibitor of IP 3 receptor channels that does not affect connexin-43 hemichannels. Acta Physiol (Oxf) 2024; 240:e14086. [PMID: 38240350 DOI: 10.1111/apha.14086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 10/24/2023] [Accepted: 01/01/2024] [Indexed: 02/24/2024]
Abstract
AIM Inositol 1,4,5-trisphosphate receptors (IP3 Rs) are intracellular Ca2+ -release channels with crucial roles in cell function. Current IP3 R inhibitors suffer from off-target effects and poor selectivity towards the three distinct IP3 R subtypes. We developed a novel peptide inhibitor of IP3 Rs and determined its effect on connexin-43 (Cx43) hemichannels, which are co-activated by IP3 R stimulation. METHODS IP3RPEP6 was developed by in silico molecular docking studies and characterized by on-nucleus patch-clamp experiments of IP3 R2 channels and carbachol-induced IP3 -mediated Ca2+ responses in IP3 R1, 2 or 3 expressing cells, triple IP3 R KO cells and astrocytes. Cx43 hemichannels were studied by patch-clamp and ATP-release approaches, and by inhibition with Gap19 peptide. IP3RPEP6 interactions with IP3 Rs were verified by co-immunoprecipitation and affinity pull-down assays. RESULTS IP3RPEP6 concentration-dependently reduced the open probability of IP3 R2 channels and competitively inhibited IP3 Rs in an IC50 order of IP3 R2 (~3.9 μM) < IP3 R3 (~4.3 μM) < IP3 R1 (~9.0 μM), without affecting Cx43 hemichannels or ryanodine receptors. IP3RPEP6 co-immunoprecipitated with IP3 R2 but not with IP3 R1; interaction with IP3 R3 varied between cell types. The IC50 of IP3RPEP6 inhibition of carbachol-induced Ca2+ responses decreased with increasing cellular Cx43 expression. Moreover, Gap19-inhibition of Cx43 hemichannels significantly reduced the amplitude of the IP3 -Ca2+ responses and strongly increased the EC50 of these responses. Finally, we identified palmitoyl-8G-IP3RPEP6 as a membrane-permeable IP3RPEP6 version allowing extracellular application of the IP3 R-inhibiting peptide. CONCLUSION IP3RPEP6 inhibits IP3 R2/R3 at concentrations that have limited effects on IP3 R1. IP3 R activation triggers hemichannel opening, which strongly affects the amplitude and concentration-dependence of IP3 -triggered Ca2+ responses.
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Affiliation(s)
- Siyu Tao
- Department of Basic and Applied Medical Sciences-Physiology Group, Ghent University, Ghent, Belgium
| | - Paco Hulpiau
- Department of Bio-Medical Sciences, HOWEST University of Applied Sciences (Hogeschool West-Vlaanderen), Bruges, Belgium
| | - Larry E Wagner
- Department of Pharmacology and Physiology, School of Medicine and Dentistry, University of Rochester Medical Center, Rochester, New York, USA
| | - Katja Witschas
- Department of Basic and Applied Medical Sciences-Physiology Group, Ghent University, Ghent, Belgium
| | - David I Yule
- Department of Pharmacology and Physiology, School of Medicine and Dentistry, University of Rochester Medical Center, Rochester, New York, USA
| | - Geert Bultynck
- Laboratory of Molecular and Cellular Signaling, Department of Molecular Cell Biology, KU Leuven, Leuven, Belgium
| | - Luc Leybaert
- Department of Basic and Applied Medical Sciences-Physiology Group, Ghent University, Ghent, Belgium
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2
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Hua X, Yao J, Liu X, Liu Q, Deng Y, Li S, Valdivia CR, Wang F, Pozzolini M, Shou Z, Valdivia HH, Xiao L. Comparison of the structure-function of five newly members of the calcin family. Int J Biol Macromol 2024; 260:129424. [PMID: 38219929 DOI: 10.1016/j.ijbiomac.2024.129424] [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: 08/30/2023] [Revised: 01/03/2024] [Accepted: 01/09/2024] [Indexed: 01/16/2024]
Abstract
Calcins are a group of scorpion toxin peptides specifically binding to ryanodine receptors (RyRs) with high affinity, and have the ability to activate and stabilize RyR in a long-lasting subconductance state. Five newly calcins synthesized compounds exhibit typical structural characteristics of a specific family through chemical synthesis and virtual analysis. As the calcins from the same species, Petersiicalcin1 and Petersiicalcin2, Jendekicalcin2 and Jendekicalcin3, have only one residue difference. Both Petersiicalcin1 and Petersiicalcin2 exhibited different affinities in stimulating [3H]ryanodine binding, but the residue mutation resulted in a 2.7 folds difference. Other calcins also exhibited a stimulatory effect on [3H]ryanodine binding to RyR1, however, their affinities were significantly lower than that of Petersiiicalcin1 and Petersiiicalcin2. The channel domain of RyR1 was found to be capable of binding with the basic residues of these calcins, which also exhibited interactions with the S6 helices on RyR1. Dynamic simulations were conducted for Petersiicalcin1 and Petersiicalcin2, which demonstrated their ability to form a highly stable conformation and resulting in an asymmetric tetramer structure of RyR1. The discovery of five newly calcins further enriches the diversity of the natural calcin family, which provides more native peptides for the structure-function analysis between calcin and RyRs.
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Affiliation(s)
- Xiaoyu Hua
- Department of Occupational and Environmental Health, Faculty of Naval Medicine, Naval Medical University (Second Military Medical University), Shanghai 200433, China
| | - Jinchi Yao
- Department of Occupational and Environmental Health, Faculty of Naval Medicine, Naval Medical University (Second Military Medical University), Shanghai 200433, China; School of Life Sciences, Liaoning Normal University, Dalian 116081, China
| | - Xinyan Liu
- Department of Traditional Chinese Medicine Surgery, the First Affiliated Hospital of the Navy Medical University, Shanghai, 200433, China
| | - Qing Liu
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Shanxi, Taigu 030801, China
| | - Yuchen Deng
- Department of Dermatology, Second Affiliated Hospital of Naval Medical University, Shanghai 200003, China
| | - Songhua Li
- Department of Cardiology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Carmen R Valdivia
- Department of Medicine and Cardiovascular Research Center, University of Wisconsin-Madison School of Medicine and Public Health, Madison, WI, USA.
| | - Fei Wang
- Department of Occupational and Environmental Health, Faculty of Naval Medicine, Naval Medical University (Second Military Medical University), Shanghai 200433, China
| | - Marina Pozzolini
- Department of Earth, Environment and Life Sciences (DISTAV), University of Genova, Via Pastore 3, 16132 Genova, Italy.
| | - Zhaoyong Shou
- Faculty of Health Service, Nacal Medical University (Second Military Medical University), Shanghai 200433, China.
| | - Héctor H Valdivia
- Department of Medicine and Cardiovascular Research Center, University of Wisconsin-Madison School of Medicine and Public Health, Madison, WI, USA.
| | - Liang Xiao
- Department of Occupational and Environmental Health, Faculty of Naval Medicine, Naval Medical University (Second Military Medical University), Shanghai 200433, China.
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3
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Li H, Liu C, Huang S, Wang X, Cao M, Gu T, Ou X, Pan S, Lin Z, Wang X, Zhu Y, Jing J. Multi-omics analyses demonstrate the modulating role of gut microbiota on the associations of unbalanced dietary intake with gastrointestinal symptoms in children with autism spectrum disorder. Gut Microbes 2023; 15:2281350. [PMID: 38010793 PMCID: PMC10730204 DOI: 10.1080/19490976.2023.2281350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 11/06/2023] [Indexed: 11/29/2023] Open
Abstract
Our previous work revealed that unbalanced dietary intake was an important independent factor associated with constipation and gastrointestinal (GI) symptoms in children with autism spectrum disorder (ASD). Growing evidence has shown the alterations in the gut microbiota and gut microbiota-derived metabolites in ASD. However, how the altered microbiota might affect the associations between unbalanced diets and GI symptoms in ASD remains unknown. We analyzed microbiome and metabolomics data in 90 ASD and 90 typically developing (TD) children based on 16S rRNA and untargeted metabolomics, together with dietary intake and GI symptoms assessment. We found that there existed 11 altered gut microbiota (FDR-corrected P-value <0.05) and 397 altered metabolites (P-value <0.05) in children with ASD compared with TD children. Among the 11 altered microbiota, the Turicibacter, Coprococcus 1, and Lachnospiraceae FCS020 group were positively correlated with constipation (FDR-corrected P-value <0.25). The Eggerthellaceae was positively correlated with total GI symptoms (FDR-corrected P-value <0.25). More importantly, three increased microbiota including Turicibacter, Coprococcus 1, and Eggerthellaceae positively modulated the associations of unbalanced dietary intake with constipation and total GI symptoms, and the decreased Clostridium sp. BR31 negatively modulated their associations in ASD children (P-value <0.05). Together, the altered microbiota strengthens the relationship between unbalanced dietary intake and GI symptoms. Among the altered metabolites, ten metabolites derived from microbiota (Turicibacter, Coprococcus 1, Eggerthellaceae, and Clostridium sp. BR31) were screened out, enriched in eight metabolic pathways, and were identified to correlate with constipation and total GI symptoms in ASD children (FDR-corrected P-value <0.25). These metabolomics findings further support the modulating role of gut microbiota on the associations of unbalanced dietary intake with GI symptoms. Collectively, our research provides insights into the relationship between diet, the gut microbiota, and GI symptoms in children with ASD.
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Affiliation(s)
- Hailin Li
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Churui Liu
- School of Biological Engineering, Dalian Polytechnic University, Dalian, Liaoning, China
| | - Saijun Huang
- Department of Child Healthcare, Affiliated Foshan Maternity and Child Healthcare Hospital, Southern Medical University, Foshan, Guangdong, China
| | - Xin Wang
- Key Laboratory of Brain, Cognition and Education Science, Ministry of Education, Institute for Brain Research and Rehabilitation, and Guangdong Key Laboratory of Mental Health and Cognitive Science, South China Normal University, Guangzhou, Guangdong, China
| | - Muqing Cao
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Tingfeng Gu
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Xiaoxuan Ou
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Shuolin Pan
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Zongyu Lin
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Xiaotong Wang
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Yanna Zhu
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Jin Jing
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong, China
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4
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Kleyner R, Ung N, Arif M, Marchi E, Amble K, Gavin M, Madrid R, Lyon G. ITPR1-associated spinocerebellar ataxia with craniofacial features-additional evidence for germline mosaicism. Cold Spring Harb Mol Case Stud 2023; 9:a006303. [PMID: 37821226 PMCID: PMC10815276 DOI: 10.1101/mcs.a006303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 10/02/2023] [Indexed: 10/13/2023] Open
Abstract
Inositol 1,4,5-triphosphate receptor type 1 (ITPR1) is an endoplasmic reticulum-bound intracellular inositol triphosphate receptor involved in the regulation of intracellular calcium. Pathogenic variants in ITPR1 are associated with spinocerebellar ataxia (SCA) types 15/16 and 29 and have recently been implicated in a facial microsomia syndrome. In this report, we present a family with three affected individuals found to have a heterozygous missense c.800C > T (predicted p.Thr267Met) who present clinically with a SCA29-like syndrome. All three individuals presented with varying degrees of ataxia, developmental delay, and apparent intellectual disability, as well as craniofacial involvement-an uncommon finding in patients with SCA29. The variant was identified using clinical exome sequencing and validated with Sanger sequencing. It is presumed to be inherited via parental germline mosaicism. We present our findings to provide additional evidence for germline mosaic inheritance of SCA29, as well as to expand the clinical phenotype of the syndrome.
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Affiliation(s)
- Robert Kleyner
- Department of Human Genetics, NYS Institute for Basic Research in Developmental Disabilities, Staten Island, New York 10314, USA
- Department of Neurological Surgery, Renaissance School of Medicine at Stony Brook University, Stony Brook, New York 11794-8122, USA
| | - Nathaniel Ung
- Department of Human Genetics, NYS Institute for Basic Research in Developmental Disabilities, Staten Island, New York 10314, USA
| | - Mohammad Arif
- Department of Human Genetics, NYS Institute for Basic Research in Developmental Disabilities, Staten Island, New York 10314, USA
- Division of Cytogenetics and Molecular Pathology, North Shore University Hospital, Manhasset, New York 11030, USA
| | - Elaine Marchi
- Department of Human Genetics, NYS Institute for Basic Research in Developmental Disabilities, Staten Island, New York 10314, USA
| | - Karen Amble
- George A. Jervis Clinic, NYS Institute for Basic Research in Developmental Disabilities, Staten Island, New York 10314, USA
| | - Maureen Gavin
- George A. Jervis Clinic, NYS Institute for Basic Research in Developmental Disabilities, Staten Island, New York 10314, USA
| | - Ricardo Madrid
- George A. Jervis Clinic, NYS Institute for Basic Research in Developmental Disabilities, Staten Island, New York 10314, USA
| | - Gholson Lyon
- Department of Human Genetics, NYS Institute for Basic Research in Developmental Disabilities, Staten Island, New York 10314, USA;
- George A. Jervis Clinic, NYS Institute for Basic Research in Developmental Disabilities, Staten Island, New York 10314, USA
- Biology PhD Program, The Graduate Center, The City University of New York, New York, New York 10016, USA
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5
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Song X, Kirtipal N, Lee S, Malý P, Bharadwaj S. Current therapeutic targets and multifaceted physiological impacts of caffeine. Phytother Res 2023; 37:5558-5598. [PMID: 37679309 DOI: 10.1002/ptr.8000] [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: 04/13/2023] [Revised: 08/04/2023] [Accepted: 08/17/2023] [Indexed: 09/09/2023]
Abstract
Caffeine, which shares consubstantial structural similarity with purine adenosine, has been demonstrated as a nonselective adenosine receptor antagonist for eliciting most of the biological functions at physiologically relevant dosages. Accumulating evidence supports caffeine's beneficial effects against different disorders, such as total cardiovascular diseases and type 2 diabetes. Conversely, paradoxical effects are also linked to caffeine ingestion in humans including hypertension-hypotension and tachycardia-bradycardia. These observations suggest the association of caffeine action with its ingested concentration and/or concurrent interaction with preferential molecular targets to direct explicit events in the human body. Thus, a coherent analysis of the functional targets of caffeine, relevant to normal physiology, and disease pathophysiology, is required to understand the pharmacology of caffeine. This review provides a broad overview of the experimentally validated targets of caffeine, particularly those of therapeutic interest, and the impacts of caffeine on organ-specific physiology and pathophysiology. Overall, the available empirical and epidemiological evidence supports the dose-dependent functional activities of caffeine and advocates for further studies to get insights into the caffeine-induced changes under specific conditions, such as asthma, DNA repair, and cancer, in view of its therapeutic applications.
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Affiliation(s)
- Xinjie Song
- Zhejiang Provincial Key Lab for Chemical and Biological Processing Technology of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, China
| | - Nikhil Kirtipal
- School of Life Sciences, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea
| | - Sunjae Lee
- School of Life Sciences, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea
| | - Petr Malý
- Laboratory of Ligand Engineering, Institute of Biotechnology of the Czech Academy of Sciences v.v.i, BIOCEV Research Center, Vestec, Czech Republic
| | - Shiv Bharadwaj
- Laboratory of Ligand Engineering, Institute of Biotechnology of the Czech Academy of Sciences v.v.i, BIOCEV Research Center, Vestec, Czech Republic
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6
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Zhang X, Wang L, Wang Y, He L, Xu D, Yan E, Guo J, Ma C, Zhang P, Yin J. Lack of adipocyte IP3R1 reduces diet-induced obesity and greatly improves whole-body glucose homeostasis. Cell Death Discov 2023; 9:87. [PMID: 36894534 PMCID: PMC9998023 DOI: 10.1038/s41420-023-01389-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: 01/18/2023] [Revised: 02/26/2023] [Accepted: 02/27/2023] [Indexed: 03/11/2023] Open
Abstract
The normal function of skeletal muscle and adipose tissue ensures whole-body glucose homeostasis. Ca2+ release channel inositol 1,4,5-trisphosphate receptor 1 (IP3R1) plays a vital role in regulating diet-induced obesity and disorders, but its functions in peripheral tissue regulating glucose homeostasis remain unexplored. In this study, mice with Ip3r1 specific knockout in skeletal muscle or adipocytes were used for investigating the mediatory role of IP3R1 on whole-body glucose homeostasis under normal or high-fat diet. We reported that IP3R1 expression levels were increased in the white adipose tissue and skeletal muscle of diet-induced obese mice. Ip3r1 knockout in skeletal muscle improved glucose tolerance and insulin sensitivity of mice on a normal chow diet, but worsened insulin resistance in diet-induced obese mice. These changes were associated with the reduced muscle weight and compromised Akt signaling activation. Importantly, Ip3r1 deletion in adipocytes protected mice from diet-induced obesity and glucose intolerance, mainly due to the enhanced lipolysis and AMPK signaling pathway in the visceral fat. In conclusion, our study demonstrates that IP3R1 in skeletal muscle and adipocytes exerts divergent effects on systemic glucose homeostasis, and characterizes adipocyte IP3R1 as a promising target for treating obesity and type 2 diabetes.
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Affiliation(s)
- Xin Zhang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, 100193, Beijing, China.,Molecular Design Breeding Frontier Science Center of the Ministry of Education, 100193, Beijing, China
| | - Lu Wang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, 100193, Beijing, China
| | - Yubo Wang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, 100193, Beijing, China
| | - Linjuan He
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, 100193, Beijing, China
| | - Doudou Xu
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, 100193, Beijing, China
| | - Enfa Yan
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, 100193, Beijing, China
| | - Jianxin Guo
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, 100193, Beijing, China
| | - Chenghong Ma
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, 100193, Beijing, China
| | - Pengguang Zhang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, 100193, Beijing, China
| | - Jingdong Yin
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, 100193, Beijing, China. .,Molecular Design Breeding Frontier Science Center of the Ministry of Education, 100193, Beijing, China.
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7
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Nadeem A, Ahmad SF. Point mutations in the gene encoding IP3 receptor subtype 3 cause impairment in T-cell and B-cell immune responses via dysfunctional Ca 2+ mobilization. Cell Mol Immunol 2023; 20:214-216. [PMID: 36596871 PMCID: PMC9886997 DOI: 10.1038/s41423-022-00938-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 10/11/2022] [Indexed: 01/05/2023] Open
Affiliation(s)
- Ahmed Nadeem
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia.
| | - Sheikh F Ahmad
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia.
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8
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Saavedra-Alvarez A, Pereyra KV, Toledo C, Iturriaga R, Del Rio R. Vascular dysfunction in HFpEF: Potential role in the development, maintenance, and progression of the disease. Front Cardiovasc Med 2022; 9:1070935. [PMID: 36620616 PMCID: PMC9810809 DOI: 10.3389/fcvm.2022.1070935] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Accepted: 11/17/2022] [Indexed: 12/24/2022] Open
Abstract
Heart failure with preserved ejection fraction (HFpEF) is a complex, heterogeneous disease characterized by autonomic imbalance, cardiac remodeling, and diastolic dysfunction. One feature that has recently been linked to the pathology is the presence of macrovascular and microvascular dysfunction. Indeed, vascular dysfunction directly affects the functionality of cardiomyocytes, leading to decreased dilatation capacity and increased cell rigidity, which are the outcomes of the progressive decline in myocardial function. The presence of an inflammatory condition in HFpEF produced by an increase in proinflammatory molecules and activation of immune cells (i.e., chronic low-grade inflammation) has been proposed to play a pivotal role in vascular remodeling and endothelial cell death, which may ultimately lead to increased arterial elastance, decreased myocardium perfusion, and decreased oxygen supply to the tissue. Despite this, the precise mechanism linking low-grade inflammation to vascular alterations in the setting of HFpEF is not completely known. However, the enhanced sympathetic vasomotor tone in HFpEF, which may result from inflammatory activation of the sympathetic nervous system, could contribute to orchestrate vascular dysfunction in the setting of HFpEF due to the exquisite sympathetic innervation of both the macro and microvasculature. Accordingly, the present brief review aims to discuss the main mechanisms that may be involved in the macro- and microvascular function impairment in HFpEF and the potential role of the sympathetic nervous system in vascular dysfunction.
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Affiliation(s)
- Andrea Saavedra-Alvarez
- Laboratory of Cardiorespiratory Control, Department of Physiology, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Katherine V. Pereyra
- Laboratory of Cardiorespiratory Control, Department of Physiology, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Camilo Toledo
- Laboratory of Cardiorespiratory Control, Department of Physiology, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Rodrigo Iturriaga
- Laboratory of Cardiorespiratory Control, Department of Physiology, Pontificia Universidad Católica de Chile, Santiago, Chile,Centro de Excelencia en Biomedicina de Magallanes (CEBIMA), Universidad de Magallanes, Punta Arenas, Chile,Facultad de la Salud, Centro de Investigación en Fisiología y Medicina de Altura (MedAlt), Universidad de Antofagasta, Antofagasta, Chile
| | - Rodrigo Del Rio
- Laboratory of Cardiorespiratory Control, Department of Physiology, Pontificia Universidad Católica de Chile, Santiago, Chile,Centro de Excelencia en Biomedicina de Magallanes (CEBIMA), Universidad de Magallanes, Punta Arenas, Chile,Facultad de la Salud, Centro de Investigación en Fisiología y Medicina de Altura (MedAlt), Universidad de Antofagasta, Antofagasta, Chile,*Correspondence: Rodrigo Del Rio
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9
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Schmitz EA, Takahashi H, Karakas E. Structural basis for activation and gating of IP 3 receptors. Nat Commun 2022; 13:1408. [PMID: 35301323 PMCID: PMC8930994 DOI: 10.1038/s41467-022-29073-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 02/24/2022] [Indexed: 12/29/2022] Open
Abstract
A pivotal component of the calcium (Ca2+) signaling toolbox in cells is the inositol 1,4,5-triphosphate (IP3) receptor (IP3R), which mediates Ca2+ release from the endoplasmic reticulum (ER), controlling cytoplasmic and organellar Ca2+ concentrations. IP3Rs are co-activated by IP3 and Ca2+, inhibited by Ca2+ at high concentrations, and potentiated by ATP. However, the underlying molecular mechanisms are unclear. Here we report cryo-electron microscopy (cryo-EM) structures of human type-3 IP3R obtained from a single dataset in multiple gating conformations: IP3-ATP bound pre-active states with closed channels, IP3-ATP-Ca2+ bound active state with an open channel, and IP3-ATP-Ca2+ bound inactive state with a closed channel. The structures demonstrate how IP3-induced conformational changes prime the receptor for activation by Ca2+, how Ca2+ binding leads to channel opening, and how ATP modulates the activity, providing insights into the long-sought questions regarding the molecular mechanism underpinning receptor activation and gating. IP3 receptors are intracellular calcium channels involved in numerous signaling pathways. Here, the authors present the cryo-EM structures of type-3 IP3 receptors in multiple gating conformations, including the active state revealing the molecular mechanism of the receptor activation.
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Affiliation(s)
- Emily A Schmitz
- Department of Molecular Physiology and Biophysics, Vanderbilt University, School of Medicine, Nashville, TN, 37232, USA.,Center for Structural Biology, Vanderbilt University, Nashville, TN, 37232, USA
| | - Hirohide Takahashi
- Department of Molecular Physiology and Biophysics, Vanderbilt University, School of Medicine, Nashville, TN, 37232, USA.,Center for Structural Biology, Vanderbilt University, Nashville, TN, 37232, USA
| | - Erkan Karakas
- Department of Molecular Physiology and Biophysics, Vanderbilt University, School of Medicine, Nashville, TN, 37232, USA. .,Center for Structural Biology, Vanderbilt University, Nashville, TN, 37232, USA.
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10
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Dridi H, Santulli G, Gambardella J, Jankauskas SS, Yuan Q, Yang J, Reiken S, Wang X, Wronska A, Liu X, Lacampagne A, Marks AR. IP3 receptor orchestrates maladaptive vascular responses in heart failure. J Clin Invest 2022; 132:152859. [PMID: 35166236 PMCID: PMC8843748 DOI: 10.1172/jci152859] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 12/21/2021] [Indexed: 12/02/2022] Open
Abstract
Patients with heart failure (HF) have augmented vascular tone, which increases cardiac workload, impairing ventricular output and promoting further myocardial dysfunction. The molecular mechanisms underlying the maladaptive vascular responses observed in HF are not fully understood. Vascular smooth muscle cells (VSMCs) control vasoconstriction via a Ca2+-dependent process, in which the type 1 inositol 1,4,5-trisphosphate receptor (IP3R1) on the sarcoplasmic reticulum (SR) plays a major role. To dissect the mechanistic contribution of intracellular Ca2+ release to the increased vascular tone observed in HF, we analyzed the remodeling of IP3R1 in aortic tissues from patients with HF and from controls. VSMC IP3R1 channels from patients with HF and HF mice were hyperphosphorylated by both serine and tyrosine kinases. VSMCs isolated from IP3R1VSMC–/– mice exhibited blunted Ca2+ responses to angiotensin II (ATII) and norepinephrine compared with control VSMCs. IP3R1VSMC–/– mice displayed significantly reduced responses to ATII, both in vivo and ex vivo. HF IP3R1VSMC–/– mice developed significantly less afterload compared with HF IP3R1fl/fl mice and exhibited significantly attenuated progression toward decompensated HF and reduced interstitial fibrosis. Ca2+-dependent phosphorylation of the MLC by MLCK activated VSMC contraction. MLC phosphorylation was markedly increased in VSMCs from patients with HF and HF mice but reduced in VSMCs from HF IP3R1VSMC–/– mice and HF WT mice treated with ML-7. Taken together, our data indicate that VSMC IP3R1 is a major effector of increased vascular tone, which contributes to increased cardiac afterload and decompensation in HF.
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Affiliation(s)
- Haikel Dridi
- Department of Physiology and Cellular Biophysics, Clyde and Helen Wu Center for Molecular Cardiology, Department of Medicine, Columbia University Vagelos College of Physicians and Surgeons, New York, New York, USA
| | - Gaetano Santulli
- Department of Physiology and Cellular Biophysics, Clyde and Helen Wu Center for Molecular Cardiology, Department of Medicine, Columbia University Vagelos College of Physicians and Surgeons, New York, New York, USA.,Department of Medicine, Division of Cardiology, Albert Einstein College of Medicine, Wilf Family Cardiovascular Research Institute, Einstein Institute for Aging Research, New York, New York, USA.,Department of Molecular Pharmacology, Einstein-Sinai Diabetes Research Center (ES-DRC), Fleischer Institute for Diabetes and Metabolism (FIDAM), Einstein Institute for Neuroimmunology and Inflammation, Albert Einstein College of Medicine, New York, New York, USA
| | - Jessica Gambardella
- Department of Physiology and Cellular Biophysics, Clyde and Helen Wu Center for Molecular Cardiology, Department of Medicine, Columbia University Vagelos College of Physicians and Surgeons, New York, New York, USA.,Department of Medicine, Division of Cardiology, Albert Einstein College of Medicine, Wilf Family Cardiovascular Research Institute, Einstein Institute for Aging Research, New York, New York, USA.,International Translational Research and Medical Education (ITME) Consortium, Department of Advanced Biomedical Science, "Federico II" University, Naples, Italy
| | - Stanislovas S Jankauskas
- Department of Medicine, Division of Cardiology, Albert Einstein College of Medicine, Wilf Family Cardiovascular Research Institute, Einstein Institute for Aging Research, New York, New York, USA.,Department of Molecular Pharmacology, Einstein-Sinai Diabetes Research Center (ES-DRC), Fleischer Institute for Diabetes and Metabolism (FIDAM), Einstein Institute for Neuroimmunology and Inflammation, Albert Einstein College of Medicine, New York, New York, USA
| | - Qi Yuan
- Department of Physiology and Cellular Biophysics, Clyde and Helen Wu Center for Molecular Cardiology, Department of Medicine, Columbia University Vagelos College of Physicians and Surgeons, New York, New York, USA
| | - Jingyi Yang
- Department of Physiology and Cellular Biophysics, Clyde and Helen Wu Center for Molecular Cardiology, Department of Medicine, Columbia University Vagelos College of Physicians and Surgeons, New York, New York, USA
| | - Steven Reiken
- Department of Physiology and Cellular Biophysics, Clyde and Helen Wu Center for Molecular Cardiology, Department of Medicine, Columbia University Vagelos College of Physicians and Surgeons, New York, New York, USA
| | - Xujun Wang
- Department of Medicine, Division of Cardiology, Albert Einstein College of Medicine, Wilf Family Cardiovascular Research Institute, Einstein Institute for Aging Research, New York, New York, USA.,Department of Molecular Pharmacology, Einstein-Sinai Diabetes Research Center (ES-DRC), Fleischer Institute for Diabetes and Metabolism (FIDAM), Einstein Institute for Neuroimmunology and Inflammation, Albert Einstein College of Medicine, New York, New York, USA
| | - Anetta Wronska
- Department of Physiology and Cellular Biophysics, Clyde and Helen Wu Center for Molecular Cardiology, Department of Medicine, Columbia University Vagelos College of Physicians and Surgeons, New York, New York, USA
| | - Xiaoping Liu
- Department of Physiology and Cellular Biophysics, Clyde and Helen Wu Center for Molecular Cardiology, Department of Medicine, Columbia University Vagelos College of Physicians and Surgeons, New York, New York, USA
| | - Alain Lacampagne
- PhyMedExp, University of Montpellier, CNRS, INSERM, CHRU Montpellier, Montpellier, France
| | - Andrew R Marks
- Department of Physiology and Cellular Biophysics, Clyde and Helen Wu Center for Molecular Cardiology, Department of Medicine, Columbia University Vagelos College of Physicians and Surgeons, New York, New York, USA
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11
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das Chagas PF, de Sousa GR, Veronez LC, Martins-da-Silva A, Corrêa CAP, Cruzeiro GAV, Nagano LFP, Queiroz RGDP, Marie SKN, Brandalise SR, Scrideli CA, Tone LG, Valera ET. Identification of ITPR1 as a Hub Gene of Group 3 Medulloblastoma and Coregulated Genes with Potential Prognostic Values. J Mol Neurosci 2021; 72:633-641. [PMID: 34822110 DOI: 10.1007/s12031-021-01942-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 11/04/2021] [Indexed: 01/03/2023]
Abstract
The Group 3 Medulloblastoma (Grp3-MB) is an aggressive molecular subtype with a high incidence of metastasis and deaths. In this study, were used an RNA sequencing data (RNA-Seq) from a Brazilian cohort of MBs to identify hub genes associated with the metastatic risk. Data validation were performed by using multiple large datasets from MBs (GSE85217, GSE37418, and EGAS00001001953). DESeq2 package in R software was used to identify the differentially expressed genes (DEGs) in our RNA-Seq data. The DEGs data were accessed to construct the modules/graphs of co-expression and to identify hub genes through Cytoscape platform. The coregulated genes were enriched by the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway, and the protein-protein interaction (PPI) network was visualized by Cytoscape. The Kaplan-Meier plotter and ROC curves were used to validate the diagnostic and prognostic values of specific biomarkers identified through this model. We identified that inositol 1,4,5-trisphosphate receptor type 1 (ITPR1) as a downregulated hub gene, with a high diagnostic accuracy to Grp3-MBs and associated with tumor metastasis. In addition, we identified genes significantly correlated with ITPR1 that were associated with metastasis in Grp3-MB (ATP1A2, MTTL7A, and RGL1) and worst overall survival in MBs (ANTXR1 and RGL1). Our findings suggest that the ITPR1 hub gene is potentially involved in the metastatic process for Grp3-MB. Our data also provide evidence of targets that may serve as prognostic predictors and/or regulators for the metastatic process that maybe explored for further research of individualized therapy to Grp3-MBs.
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Affiliation(s)
- Pablo Ferreira das Chagas
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes, Ribeirão Preto, CEP, 390014049-900, Brazil.
| | - Graziella Ribeiro de Sousa
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes, Ribeirão Preto, CEP, 390014049-900, Brazil
| | - Luciana Chain Veronez
- Department of Pediatrics, Ribeirão Preto Medical School, Clinics Hospital, University of São Paulo Ribeirão Preto, Ribeirão, Brazil
| | - Andrea Martins-da-Silva
- Department of Pediatrics, Ribeirão Preto Medical School, Clinics Hospital, University of São Paulo Ribeirão Preto, Ribeirão, Brazil
| | - Carolina Alves Pereira Corrêa
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes, Ribeirão Preto, CEP, 390014049-900, Brazil
| | - Gustavo Alencastro Veiga Cruzeiro
- Department of Pediatrics, Ribeirão Preto Medical School, Clinics Hospital, University of São Paulo Ribeirão Preto, Ribeirão, Brazil.,Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA.,Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Luis Fernando Peinado Nagano
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes, Ribeirão Preto, CEP, 390014049-900, Brazil
| | - Rosane Gomes de Paula Queiroz
- Department of Pediatrics, Ribeirão Preto Medical School, Clinics Hospital, University of São Paulo Ribeirão Preto, Ribeirão, Brazil
| | - Suely Kazue Nagahashi Marie
- Laboratory of Cellular and Molecular Biology, Department of Neurology, Faculdade de Medicina FMUSP, Universidade de SãoPaulo, São Paulo, SP, Brazil
| | | | - Carlos Alberto Scrideli
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes, Ribeirão Preto, CEP, 390014049-900, Brazil.,Department of Pediatrics, Ribeirão Preto Medical School, Clinics Hospital, University of São Paulo Ribeirão Preto, Ribeirão, Brazil
| | - Luiz Gonzaga Tone
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes, Ribeirão Preto, CEP, 390014049-900, Brazil.,Department of Pediatrics, Ribeirão Preto Medical School, Clinics Hospital, University of São Paulo Ribeirão Preto, Ribeirão, Brazil
| | - Elvis Terci Valera
- Department of Pediatrics, Ribeirão Preto Medical School, Clinics Hospital, University of São Paulo Ribeirão Preto, Ribeirão, Brazil
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12
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Devi RV, Raj D, Doble M. Lockdown of mitochondrial Ca 2+ extrusion and subsequent resveratrol treatment kill HeLa cells by Ca 2+ overload. Int J Biochem Cell Biol 2021; 139:106071. [PMID: 34428589 DOI: 10.1016/j.biocel.2021.106071] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 08/06/2021] [Accepted: 08/19/2021] [Indexed: 10/20/2022]
Abstract
Anticancer effect of resveratrol and the role of sodium/lithium/calcium exchanger in context with calcium ions are studied in human cervical cancer cell line. This therapeutic approach using siNCLX mediated gene silencing and drug therapy with resveratrol indicates the disruption of calcium homeostasis, increase in caspase (-3, 8, 9) mRNA expressions and DNA damage leading to apoptotic cell death. Monitoring the intracellular Ca2+ changes using fluo-4AM indicates highest rise in [Ca2+] level in sodium/lithium/calcium exchanger silenced group with five different stages, that is distinguishable based on the fluorescence intensity. In resveratrol treated and siNCLX + resveratrol treated groups no such cell staging differences were observed, despite uniform Ca2+ rise followed by decrease in the intensity. Integrating RNAi gene silencing of sodium/lithium/calcium exchanger with resveratrol can form the most interesting, efficient and promising therapeutic strategy in the treatment of cancer.
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Affiliation(s)
- R Viswambari Devi
- Bioengineering and Drug Design Laboratory, Department of Biotechnology, Indian Institute of Technology, Chennai, 600036, India
| | - Divakar Raj
- Bioengineering and Drug Design Laboratory, Department of Biotechnology, Indian Institute of Technology, Chennai, 600036, India
| | - Mukesh Doble
- Bioengineering and Drug Design Laboratory, Department of Biotechnology, Indian Institute of Technology, Chennai, 600036, India.
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13
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Woll KA, Van Petegem F. Calcium Release Channels: Structure and Function of IP3 Receptors and Ryanodine Receptors. Physiol Rev 2021; 102:209-268. [PMID: 34280054 DOI: 10.1152/physrev.00033.2020] [Citation(s) in RCA: 79] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Ca2+-release channels are giant membrane proteins that control the release of Ca2+ from the endoplasmic and sarcoplasmic reticulum. The two members, ryanodine receptors (RyRs) and inositol-1,4,5-trisphosphate Receptors (IP3Rs), are evolutionarily related and are both activated by cytosolic Ca2+. They share a common architecture, but RyRs have evolved additional modules in the cytosolic region. Their massive size allows for the regulation by tens of proteins and small molecules, which can affect the opening and closing of the channels. In addition to Ca2+, other major triggers include IP3 for the IP3Rs, and depolarization of the plasma membrane for a particular RyR subtype. Their size has made them popular targets for study via electron microscopic methods, with current structures culminating near 3Å. The available structures have provided many new mechanistic insights int the binding of auxiliary proteins and small molecules, how these can regulate channel opening, and the mechanisms of disease-associated mutations. They also help scrutinize previously proposed binding sites, as some of these are now incompatible with the structures. Many questions remain around the structural effects of post-translational modifications, additional binding partners, and the higher-order complexes these channels can make in situ. This review summarizes our current knowledge about the structures of Ca2+-release channels and how this informs on their function.
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Affiliation(s)
- Kellie A Woll
- Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, BC, Canada
| | - Filip Van Petegem
- Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, BC, Canada
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14
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Berti FCB, Mathias C, Garcia LE, Gradia DF, de Araújo-Souza PS, Cipolla GA, de Oliveira JC, Malheiros D. Comprehensive analysis of ceRNA networks in HPV16- and HPV18-mediated cervical cancers reveals XIST as a pivotal competing endogenous RNA. Biochim Biophys Acta Mol Basis Dis 2021; 1867:166172. [PMID: 34048924 DOI: 10.1016/j.bbadis.2021.166172] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 05/11/2021] [Accepted: 05/14/2021] [Indexed: 12/14/2022]
Abstract
Cervical cancer (CC) is one of the most common cancers in women worldwide, being closely related to high-risk human papillomavirus (HR-HPVs). After a particular HR-HPV infects a cervical cell, transcriptional changes in the host cell are expected, including the regulation of lncRNAs, miRNAs, and mRNAs. Such transcripts may work independently or integrated in complex molecular networks - as in competing endogenous RNA (ceRNA) networks. In our research, we gathered transcriptome data from samples of HPV16/HPV18 cervical squamous cell carcinoma and endocervical adenocarcinoma (CESC), from The Cancer Genome Atlas (TCGA) project. Using GDCRNATools, we identified ceRNA networks that differentiate HPV16- from HPV18-mediated CESC. For HPV16-CESC, three lncRNA-mRNA co-expressed pairs were reported, all led by the X-inactive specific transcript (XIST): XIST | DLG5, XIST | LGR4, and XIST | ZNF81. The XIST | LGR4 and XIST | ZNF81 pairs shared 11 miRNAs, suggesting an increased impact on their final biological effect. XIST also stood out as an important lncRNA in HPV18-CESC, leading 35 of the 42 co-expressed pairs. Some mRNAs, such as ADAM9 and SLC38A2, emerged as important players in the ceRNA regulatory networks due to sharing a considerable amount of miRNAs with XIST. Furthermore, some XIST-associated axes, namely XIST | miR-23a-3p | LGR4 and XIST | miR-30b-5p or miR-30c-5p or miR-30e-5p I ADAM9, had a significant impact on the overall survival of HPV16- and HPV18-CESC patients, respectively. Together, these data suggest that XIST has an important role in HPV-mediated tumorigenesis, which may implicate different molecular signatures between HPV16 and HPV18-associated tumors.
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Affiliation(s)
- Fernanda Costa Brandão Berti
- Postgraduate Program in Genetics, Department of Genetics, Federal University of Paraná (UFPR), Centro Politécnico, Jardim das Américas, 81531-900 Curitiba, Paraná State, Brazil; Laboratory of Human Molecular Genetics, Department of Genetics, Federal University of Paraná (UFPR), Centro Politécnico, Jardim das Américas, 81531-900 Curitiba, Paraná State, Brazil
| | - Carolina Mathias
- Postgraduate Program in Genetics, Department of Genetics, Federal University of Paraná (UFPR), Centro Politécnico, Jardim das Américas, 81531-900 Curitiba, Paraná State, Brazil; Laboratory of Human Cytogenetics and Oncogenetics, Department of Genetics, Federal University of Paraná (UFPR), Centro Politécnico, Jardim das Américas, 81531-900 Curitiba, Paraná State, Brazil
| | - Leandro Encarnação Garcia
- Postgraduate Program in Genetics, Department of Genetics, Federal University of Paraná (UFPR), Centro Politécnico, Jardim das Américas, 81531-900 Curitiba, Paraná State, Brazil; Laboratory of Human Cytogenetics and Oncogenetics, Department of Genetics, Federal University of Paraná (UFPR), Centro Politécnico, Jardim das Américas, 81531-900 Curitiba, Paraná State, Brazil
| | - Daniela Fiori Gradia
- Postgraduate Program in Genetics, Department of Genetics, Federal University of Paraná (UFPR), Centro Politécnico, Jardim das Américas, 81531-900 Curitiba, Paraná State, Brazil; Laboratory of Human Cytogenetics and Oncogenetics, Department of Genetics, Federal University of Paraná (UFPR), Centro Politécnico, Jardim das Américas, 81531-900 Curitiba, Paraná State, Brazil
| | - Patrícia Savio de Araújo-Souza
- Postgraduate Program in Genetics, Department of Genetics, Federal University of Paraná (UFPR), Centro Politécnico, Jardim das Américas, 81531-900 Curitiba, Paraná State, Brazil; Laboratory of Immunogenetics, Department of Genetics, Federal University of Paraná (UFPR), Centro Politécnico, Jardim das Américas, 81531-900 Curitiba, Paraná State, Brazil
| | - Gabriel Adelman Cipolla
- Postgraduate Program in Genetics, Department of Genetics, Federal University of Paraná (UFPR), Centro Politécnico, Jardim das Américas, 81531-900 Curitiba, Paraná State, Brazil; Laboratory of Human Molecular Genetics, Department of Genetics, Federal University of Paraná (UFPR), Centro Politécnico, Jardim das Américas, 81531-900 Curitiba, Paraná State, Brazil
| | - Jaqueline Carvalho de Oliveira
- Postgraduate Program in Genetics, Department of Genetics, Federal University of Paraná (UFPR), Centro Politécnico, Jardim das Américas, 81531-900 Curitiba, Paraná State, Brazil; Laboratory of Human Cytogenetics and Oncogenetics, Department of Genetics, Federal University of Paraná (UFPR), Centro Politécnico, Jardim das Américas, 81531-900 Curitiba, Paraná State, Brazil
| | - Danielle Malheiros
- Postgraduate Program in Genetics, Department of Genetics, Federal University of Paraná (UFPR), Centro Politécnico, Jardim das Américas, 81531-900 Curitiba, Paraná State, Brazil; Laboratory of Human Molecular Genetics, Department of Genetics, Federal University of Paraná (UFPR), Centro Politécnico, Jardim das Américas, 81531-900 Curitiba, Paraná State, Brazil.
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15
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Baker MR, Fan G, Seryshev AB, Agosto MA, Baker ML, Serysheva II. Cryo-EM structure of type 1 IP 3R channel in a lipid bilayer. Commun Biol 2021; 4:625. [PMID: 34035440 PMCID: PMC8149723 DOI: 10.1038/s42003-021-02156-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 04/26/2021] [Indexed: 12/11/2022] Open
Abstract
Type 1 inositol 1,4,5-trisphosphate receptor (IP3R1) is the predominant Ca2+-release channel in neurons. IP3R1 mediates Ca2+ release from the endoplasmic reticulum into the cytosol and thereby is involved in many physiological processes. Here, we present the cryo-EM structures of full-length rat IP3R1 reconstituted in lipid nanodisc and detergent solubilized in the presence of phosphatidylcholine determined in ligand-free, closed states by single-particle electron cryo-microscopy. Notably, both structures exhibit the well-established IP3R1 protein fold and reveal a nearly complete representation of lipids with similar locations of ordered lipids bound to the transmembrane domains. The lipid-bound structures show improved features that enabled us to unambiguously build atomic models of IP3R1 including two membrane associated helices that were not previously resolved in the TM region. Our findings suggest conserved locations of protein-bound lipids among homotetrameric ion channels that are critical for their structural and functional integrity despite the diversity of structural mechanisms for their gating. 3D structure of full-length rat type 1 inositol 1,4,5-trisphosphate receptor reconstituted in lipid nanodisc is determined using single-particle cryo-electron microscopy. The study suggests conserved locations of protein-bound lipids among structurally diverse, homo-tetrameric ion channels.
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Affiliation(s)
- Mariah R Baker
- Department of Biochemistry and Molecular Biology, Structural Biology Imaging Center, McGovern Medical School at The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Guizhen Fan
- Department of Biochemistry and Molecular Biology, Structural Biology Imaging Center, McGovern Medical School at The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Alexander B Seryshev
- Department of Biochemistry and Molecular Biology, Structural Biology Imaging Center, McGovern Medical School at The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Melina A Agosto
- Verna and Marrs McLean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX, USA
| | - Matthew L Baker
- Department of Biochemistry and Molecular Biology, Structural Biology Imaging Center, McGovern Medical School at The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Irina I Serysheva
- Department of Biochemistry and Molecular Biology, Structural Biology Imaging Center, McGovern Medical School at The University of Texas Health Science Center at Houston, Houston, TX, USA.
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16
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Rich KA, Roggenbuck J, Kolb SJ. Searching Far and Genome-Wide: The Relevance of Association Studies in Amyotrophic Lateral Sclerosis. Front Neurosci 2021; 14:603023. [PMID: 33584177 PMCID: PMC7873947 DOI: 10.3389/fnins.2020.603023] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 12/03/2020] [Indexed: 11/13/2022] Open
Abstract
Genome-wide association studies (GWAS) and rare variant association studies (RVAS) are applied across many areas of complex disease to analyze variation in whole genomes of thousands of unrelated patients. These approaches are able to identify variants and/or biological pathways which are associated with disease status and, in contrast to traditional linkage studies or candidate gene approaches, do so without requiring multigenerational affected families, prior hypotheses, or known genes of interest. However, the novel associations identified by these methods typically have lower effect sizes than those found in classical family studies. In the motor neuron disease amyotrophic lateral sclerosis (ALS), GWAS, and RVAS have been used to identify multiple disease-associated genes but have not yet resulted in novel therapeutic interventions. There is significant urgency within the ALS community to identify additional genetic markers of disease to uncover novel biological mechanisms, stratify genetic subgroups of disease, and drive drug development. Given the widespread and increasing application of genetic association studies of complex disease, it is important to recognize the strengths and limitations of these approaches. Here, we review ALS gene discovery via GWAS and RVAS.
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Affiliation(s)
- Kelly A Rich
- Department of Neurology, The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - Jennifer Roggenbuck
- Department of Neurology, The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - Stephen J Kolb
- Department of Neurology, The Ohio State University Wexner Medical Center, Columbus, OH, United States.,Department of Biological Chemistry and Pharmacology, The Ohio State University Wexner Medical Center, Columbus, OH, United States
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17
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Gambardella J, Morelli MB, Wang X, Castellanos V, Mone P, Santulli G. The discovery and development of IP3 receptor modulators: an update. Expert Opin Drug Discov 2021; 16:709-718. [PMID: 33356639 DOI: 10.1080/17460441.2021.1858792] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Introduction: Inositol 1,4,5-trisphosphate receptors (IP3Rs) are intracellular calcium (Ca2+) release channels located on the endoplasmic/sarcoplasmic reticulum. The availability of the structure of the ligand-binding domain of IP3Rs has enabled the design of compatible ligands, but the limiting step remains their actual effectiveness in a biological context.Areas covered: This article summarizes the compelling literature on both agonists and antagonists targeting IP3Rs, emphasizing their strengths and limitations. The main challenges toward the discovery and development of IP3 receptor modulators are also described.Expert opinion: Despite significant progress in recent years, the pharmacology of IP3R still has major drawbacks, especially concerning the availability of specific antag onists. Moreover, drugs specifically targeting the three different subtypes of IP3R are especially needed.
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Affiliation(s)
- Jessica Gambardella
- Department of Medicine (Division of Cardiology), Wilf Family Cardiovascular Research Institute, Einstein Institute for Aging Research, Albert Einstein College of Medicine, Montefiore University Hospital, New York City, USA.,Department of Molecular Pharmacology, Fleischer Institute for Diabetes and Metabolism, Einstein-Sinai Diabetes Research Center (ES-DRC), Albert Einstein College of Medicine, New York City, USA.,Department of Advanced Biomedical Sciences, "Federico II" University, Naples, Italy.,International Translational Research and Medical Education (ITME), Naples, Italy
| | - Marco B Morelli
- Department of Medicine (Division of Cardiology), Wilf Family Cardiovascular Research Institute, Einstein Institute for Aging Research, Albert Einstein College of Medicine, Montefiore University Hospital, New York City, USA.,Department of Molecular Pharmacology, Fleischer Institute for Diabetes and Metabolism, Einstein-Sinai Diabetes Research Center (ES-DRC), Albert Einstein College of Medicine, New York City, USA
| | - Xujun Wang
- Department of Medicine (Division of Cardiology), Wilf Family Cardiovascular Research Institute, Einstein Institute for Aging Research, Albert Einstein College of Medicine, Montefiore University Hospital, New York City, USA
| | - Vanessa Castellanos
- Department of Medicine (Division of Cardiology), Wilf Family Cardiovascular Research Institute, Einstein Institute for Aging Research, Albert Einstein College of Medicine, Montefiore University Hospital, New York City, USA
| | - Pasquale Mone
- University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Gaetano Santulli
- Department of Medicine (Division of Cardiology), Wilf Family Cardiovascular Research Institute, Einstein Institute for Aging Research, Albert Einstein College of Medicine, Montefiore University Hospital, New York City, USA.,Department of Molecular Pharmacology, Fleischer Institute for Diabetes and Metabolism, Einstein-Sinai Diabetes Research Center (ES-DRC), Albert Einstein College of Medicine, New York City, USA.,Department of Advanced Biomedical Sciences, "Federico II" University, Naples, Italy.,International Translational Research and Medical Education (ITME), Naples, Italy
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18
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Parys JB, Bultynck G, Vervliet T. IP 3 Receptor Biology and Endoplasmic Reticulum Calcium Dynamics in Cancer. PROGRESS IN MOLECULAR AND SUBCELLULAR BIOLOGY 2021; 59:215-237. [PMID: 34050869 DOI: 10.1007/978-3-030-67696-4_11] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Intracellular Ca2+ signaling regulates a plethora of cellular functions. A central role in these processes is reserved for the inositol 1,4,5-trisphosphate receptor (IP3R), a ubiquitously expressed Ca2+-release channel, mainly located in the endoplasmic reticulum (ER). Three IP3R isoforms (IP3R1, IP3R2 and IP3R3) exist, encoded respectively by ITPR1, ITPR2 and ITPR3. The proteins encoded by these genes are each about 2700 amino acids long and assemble into large tetrameric channels, which form the target of many regulatory proteins, including several tumor suppressors and oncogenes. Due to the important role of the IP3Rs in cell function, their dysregulation is linked to multiple pathologies. In this review, we highlight the complex role of the IP3R in cancer, as it participates in most of the so-called "hallmarks of cancer". In particular, the IP3R directly controls cell death and cell survival decisions via regulation of autophagy and apoptosis. Moreover, the IP3R impacts cellular proliferation, migration and invasion. Typical examples of the role of the IP3Rs in these various processes are discussed. The relative levels of the IP3R isoforms expressed and their subcellular localization, e.g. at the ER-mitochondrial interface, is hereby important. Finally, evidence is provided about how the knowledge of the regulation of the IP3R by tumor suppressors and oncogenes can be exploited to develop novel therapeutic approaches to fight cancer.
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Affiliation(s)
- Jan B Parys
- Laboratory for Molecular and Cellular Signaling, Department of Cellular and Molecular Medicine & Leuven Cancer Institute, KU Leuven, Leuven, Belgium.
| | - Geert Bultynck
- Laboratory for Molecular and Cellular Signaling, Department of Cellular and Molecular Medicine & Leuven Cancer Institute, KU Leuven, Leuven, Belgium
| | - Tim Vervliet
- Laboratory for Molecular and Cellular Signaling, Department of Cellular and Molecular Medicine & Leuven Cancer Institute, KU Leuven, Leuven, Belgium
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19
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Gambardella J, Sorriento D, Bova M, Rusciano M, Loffredo S, Wang X, Petraroli A, Carucci L, Mormile I, Oliveti M, Bruno Morelli M, Fiordelisi A, Spadaro G, Campiglia P, Sala M, Trimarco B, Iaccarino G, Santulli G, Ciccarelli M. Role of Endothelial G Protein-Coupled Receptor Kinase 2 in Angioedema. Hypertension 2020; 76:1625-1636. [PMID: 32895019 DOI: 10.1161/hypertensionaha.120.15130] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Excessive BK (bradykinin) stimulation is responsible for the exaggerated permeabilization of the endothelium in angioedema. However, the molecular mechanisms underlying these responses have not been investigated. BK receptors are Gq-protein-coupled receptors phosphorylated by GRK2 (G protein-coupled receptor kinase 2) with a hitherto unknown biological and pathophysiological significance. In the present study, we sought to identify the functional role of GRK2 in angioedema through the regulation of BK signaling. We found that the accumulation of cytosolic Ca2+ in endothelial cells induced by BK was sensitive to GRK2 activity, as it was significantly augmented by inhibiting the kinase. Accordingly, permeabilization and NO production induced by BK were enhanced, as well. In vivo, mice with reduced GRK2 levels in the endothelium (Tie2-CRE/GRK2fl+/fl-) exhibited an increased response to BK in terms of vascular permeability and extravasation. Finally, patients with reduced GRK2 levels displayed a severe phenotype of angioedema. Taken together, these findings establish GRK2 as a novel pivotal regulator of BK signaling with an essential role in the pathophysiology of vascular permeability and angioedema.
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Affiliation(s)
- Jessica Gambardella
- From the Department of Advanced Biomedical Science (J.G., D.S., A.F., B.T., G.I., G. Santulli), University of Naples Federico II, NA, Italy.,Division of Cardiology, Department of Medicine, Wilf Family Cardiovascular Research Institute (J.G., X.W., M.B.M., G. Santulli), Albert Einstein College of Medicine, Montefiore University Hospital, NY.,Department of Molecular Pharmacology, Fleischer Institute for Diabetes and Metabolism (FIDAM) (J.G., X.W., M.B.M., G. Santulli), Albert Einstein College of Medicine, Montefiore University Hospital, NY.,International Translational Research and Medical Education Consortium (ITME), NA, Italy (J.G., B.T., G. Santulli)
| | - Daniela Sorriento
- Department of Translational Medical Sciences and Interdepartmental Center for Research in Basic and Clinical Immunology Sciences (M.B., S.L., A.P., L.C., I.M., G. Spadaro), University of Naples Federico II, NA, Italy
| | - Maria Bova
- Department of Translational Medical Sciences and Interdepartmental Center for Research in Basic and Clinical Immunology Sciences (M.B., S.L., A.P., L.C., I.M., G. Spadaro), University of Naples Federico II, NA, Italy
| | - Mariarosaria Rusciano
- Montevergine Hospital, Mercogliano, Italy (M.R.).,Department of Medicine and Surgery (M.R., M.O., M.C.), University of Salerno, Italy
| | - Stefania Loffredo
- Department of Translational Medical Sciences and Interdepartmental Center for Research in Basic and Clinical Immunology Sciences (M.B., S.L., A.P., L.C., I.M., G. Spadaro), University of Naples Federico II, NA, Italy
| | - Xujun Wang
- Division of Cardiology, Department of Medicine, Wilf Family Cardiovascular Research Institute (J.G., X.W., M.B.M., G. Santulli), Albert Einstein College of Medicine, Montefiore University Hospital, NY.,Department of Molecular Pharmacology, Fleischer Institute for Diabetes and Metabolism (FIDAM) (J.G., X.W., M.B.M., G. Santulli), Albert Einstein College of Medicine, Montefiore University Hospital, NY
| | - Angelica Petraroli
- Department of Translational Medical Sciences and Interdepartmental Center for Research in Basic and Clinical Immunology Sciences (M.B., S.L., A.P., L.C., I.M., G. Spadaro), University of Naples Federico II, NA, Italy
| | - Laura Carucci
- Department of Translational Medical Sciences and Interdepartmental Center for Research in Basic and Clinical Immunology Sciences (M.B., S.L., A.P., L.C., I.M., G. Spadaro), University of Naples Federico II, NA, Italy
| | - Ilaria Mormile
- Department of Translational Medical Sciences and Interdepartmental Center for Research in Basic and Clinical Immunology Sciences (M.B., S.L., A.P., L.C., I.M., G. Spadaro), University of Naples Federico II, NA, Italy
| | - Marco Oliveti
- Department of Medicine and Surgery (M.R., M.O., M.C.), University of Salerno, Italy
| | - Marco Bruno Morelli
- Division of Cardiology, Department of Medicine, Wilf Family Cardiovascular Research Institute (J.G., X.W., M.B.M., G. Santulli), Albert Einstein College of Medicine, Montefiore University Hospital, NY.,Department of Molecular Pharmacology, Fleischer Institute for Diabetes and Metabolism (FIDAM) (J.G., X.W., M.B.M., G. Santulli), Albert Einstein College of Medicine, Montefiore University Hospital, NY
| | - Antonella Fiordelisi
- From the Department of Advanced Biomedical Science (J.G., D.S., A.F., B.T., G.I., G. Santulli), University of Naples Federico II, NA, Italy
| | - Giuseppe Spadaro
- Department of Translational Medical Sciences and Interdepartmental Center for Research in Basic and Clinical Immunology Sciences (M.B., S.L., A.P., L.C., I.M., G. Spadaro), University of Naples Federico II, NA, Italy
| | - Pietro Campiglia
- Division of Biomedicine, Department of Pharmaceutical Science (P.C., M.S.), University of Salerno, Italy
| | - Marina Sala
- Division of Biomedicine, Department of Pharmaceutical Science (P.C., M.S.), University of Salerno, Italy
| | - Bruno Trimarco
- International Translational Research and Medical Education Consortium (ITME), NA, Italy (J.G., B.T., G. Santulli)
| | - Guido Iaccarino
- From the Department of Advanced Biomedical Science (J.G., D.S., A.F., B.T., G.I., G. Santulli), University of Naples Federico II, NA, Italy
| | - Gaetano Santulli
- From the Department of Advanced Biomedical Science (J.G., D.S., A.F., B.T., G.I., G. Santulli), University of Naples Federico II, NA, Italy.,Division of Cardiology, Department of Medicine, Wilf Family Cardiovascular Research Institute (J.G., X.W., M.B.M., G. Santulli), Albert Einstein College of Medicine, Montefiore University Hospital, NY.,Department of Molecular Pharmacology, Fleischer Institute for Diabetes and Metabolism (FIDAM) (J.G., X.W., M.B.M., G. Santulli), Albert Einstein College of Medicine, Montefiore University Hospital, NY.,International Translational Research and Medical Education Consortium (ITME), NA, Italy (J.G., B.T., G. Santulli)
| | - Michele Ciccarelli
- Department of Medicine and Surgery (M.R., M.O., M.C.), University of Salerno, Italy
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Zhai K, Liskova A, Kubatka P, Büsselberg D. Calcium Entry through TRPV1: A Potential Target for the Regulation of Proliferation and Apoptosis in Cancerous and Healthy Cells. Int J Mol Sci 2020; 21:E4177. [PMID: 32545311 PMCID: PMC7312732 DOI: 10.3390/ijms21114177] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 06/05/2020] [Accepted: 06/08/2020] [Indexed: 02/06/2023] Open
Abstract
Intracellular calcium (Ca2+) concentration ([Ca2+]i) is a key determinant of cell fate and is implicated in carcinogenesis. Membrane ion channels are structures through which ions enter or exit the cell, depending on the driving forces. The opening of transient receptor potential vanilloid 1 (TRPV1) ligand-gated ion channels facilitates transmembrane Ca2+ and Na+ entry, which modifies the delicate balance between apoptotic and proliferative signaling pathways. Proliferation is upregulated through two mechanisms: (1) ATP binding to the G-protein-coupled receptor P2Y2, commencing a kinase signaling cascade that activates the serine-threonine kinase Akt, and (2) the transactivation of the epidermal growth factor receptor (EGFR), leading to a series of protein signals that activate the extracellular signal-regulated kinases (ERK) 1/2. The TRPV1-apoptosis pathway involves Ca2+ influx and efflux between the cytosol, mitochondria, and endoplasmic reticulum (ER), the release of apoptosis-inducing factor (AIF) and cytochrome c from the mitochondria, caspase activation, and DNA fragmentation and condensation. While proliferative mechanisms are typically upregulated in cancerous tissues, shifting the balance to favor apoptosis could support anti-cancer therapies. TRPV1, through [Ca2+]i signaling, influences cancer cell fate; therefore, the modulation of the TRPV1-enforced proliferation-apoptosis balance is a promising avenue in developing anti-cancer therapies and overcoming cancer drug resistance. As such, this review characterizes and evaluates the role of TRPV1 in cell death and survival, in the interest of identifying mechanistic targets for drug discovery.
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Affiliation(s)
- Kevin Zhai
- Department of Physiology and Biophysics, Weill Cornell Medicine-Qatar, Education City, Qatar Foundation, Doha, PO Box 24144, Qatar;
| | - Alena Liskova
- Clinic of Obstetrics and Gynecology, Jessenius Faculty of Medicine, Comenius University in Bratislava, 03601 Martin, Slovakia;
| | - Peter Kubatka
- Department of Medical Biology, Jessenius Faculty of Medicine, Comenius University in Bratislava, 03601 Martin, Slovakia;
| | - Dietrich Büsselberg
- Department of Physiology and Biophysics, Weill Cornell Medicine-Qatar, Education City, Qatar Foundation, Doha, PO Box 24144, Qatar;
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