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Ortega M, Fábrega-García MM, Molina-García T, Gavara J, de Dios E, Pérez-Solé N, Marcos-Garcés V, Padilla-Esquivel JJ, Diaz A, Martinez-Dolz L, Jimenez-Navarro M, Rios-Navarro C, Bodí V, Ruiz-Saurí A. Novel Fibrillar and Non-Fibrillar Collagens Involved in Fibrotic Scar Formation after Myocardial Infarction. Int J Mol Sci 2024; 25:6625. [PMID: 38928330 PMCID: PMC11204374 DOI: 10.3390/ijms25126625] [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: 03/26/2024] [Revised: 05/30/2024] [Accepted: 06/11/2024] [Indexed: 06/28/2024] Open
Abstract
Following myocardial infarction (MI), adverse remodeling depends on the proper formation of fibrotic scars, composed of type I and III collagen. Our objective was to pinpoint the participation of previously unreported collagens in post-infarction cardiac fibrosis. Gene (qRT-PCR) and protein (immunohistochemistry followed by morphometric analysis) expression of fibrillar (types II and XI) and non-fibrillar (types VIII and XII) collagens were determined in RNA-sequencing data from 92 mice undergoing myocardial ischemia; mice submitted to permanent (non-reperfused MI, n = 8) or transient (reperfused MI, n = 8) coronary occlusion; and eight autopsies from chronic MI patients. In the RNA-sequencing analysis of mice undergoing myocardial ischemia, increased transcriptomic expression of collagen types II, VIII, XI, and XII was reported within the first week, a tendency that persisted 21 days afterwards. In reperfused and non-reperfused experimental MI models, their gene expression was heightened 21 days post-MI induction and positively correlated with infarct size. In chronic MI patients, immunohistochemistry analysis demonstrated their presence in fibrotic scars. Functional analysis indicated that these subunits probably confer tensile strength and ensure the cohesion of interstitial components. Our data reveal that novel collagens are present in the infarcted myocardium. These data could lay the groundwork for unraveling post-MI fibrotic scar composition, which could ultimately influence patient survivorship.
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Affiliation(s)
- María Ortega
- INCLIVA Biomedical Research Institute, 46100 Valencia, Spain; (M.O.); (T.M.-G.); (N.P.-S.); (V.M.-G.); (A.R.-S.)
| | | | - Tamara Molina-García
- INCLIVA Biomedical Research Institute, 46100 Valencia, Spain; (M.O.); (T.M.-G.); (N.P.-S.); (V.M.-G.); (A.R.-S.)
| | - Jose Gavara
- Centro de Biomateriales e Ingeniería Tisular, Universidad Politécnica de Valencia, 46022 Valencia, Spain;
- Centro de Investigación Biomédica en Red (CIBER)-CV, 28029 Madrid, Spain; (E.d.D.); (L.M.-D.); (M.J.-N.)
| | - Elena de Dios
- Centro de Investigación Biomédica en Red (CIBER)-CV, 28029 Madrid, Spain; (E.d.D.); (L.M.-D.); (M.J.-N.)
| | - Nerea Pérez-Solé
- INCLIVA Biomedical Research Institute, 46100 Valencia, Spain; (M.O.); (T.M.-G.); (N.P.-S.); (V.M.-G.); (A.R.-S.)
- Centro de Investigación Biomédica en Red (CIBER)-CV, 28029 Madrid, Spain; (E.d.D.); (L.M.-D.); (M.J.-N.)
| | - Víctor Marcos-Garcés
- INCLIVA Biomedical Research Institute, 46100 Valencia, Spain; (M.O.); (T.M.-G.); (N.P.-S.); (V.M.-G.); (A.R.-S.)
- Centro de Investigación Biomédica en Red (CIBER)-CV, 28029 Madrid, Spain; (E.d.D.); (L.M.-D.); (M.J.-N.)
- Cardiology Department, Hospital Clínico Universitario, 46010 Valencia, Spain
| | | | - Ana Diaz
- Unidad Central de Investigación Médica, University of Valencia, 46010 Valencia, Spain;
| | - Luis Martinez-Dolz
- Centro de Investigación Biomédica en Red (CIBER)-CV, 28029 Madrid, Spain; (E.d.D.); (L.M.-D.); (M.J.-N.)
- Cardiology Departament, Hospital Universitario Politécnico La Fe, 46026 Valencia, Spain
- Instituto de Investigación Sanitaria La Fe, 46026 Valencia, Spain
| | - Manuel Jimenez-Navarro
- Centro de Investigación Biomédica en Red (CIBER)-CV, 28029 Madrid, Spain; (E.d.D.); (L.M.-D.); (M.J.-N.)
- Servicio de Cardiología y Cirugía Cardiovascular-Área del Corazón, Hospital Universitario Virgen de la Victoria, 29010 Málaga, Spain
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina (IBIMA Plataforma BIONAND), 29590 Málaga, Spain
- Departamento de Medicina y Dermatología, Facultad de Medicina, Universidad de Málaga, 29010 Málaga, Spain
| | - Cesar Rios-Navarro
- INCLIVA Biomedical Research Institute, 46100 Valencia, Spain; (M.O.); (T.M.-G.); (N.P.-S.); (V.M.-G.); (A.R.-S.)
- Department of Pathology, University of Valencia, 46010 Valencia, Spain;
- Centro de Investigación Biomédica en Red (CIBER)-CV, 28029 Madrid, Spain; (E.d.D.); (L.M.-D.); (M.J.-N.)
| | - Vicente Bodí
- INCLIVA Biomedical Research Institute, 46100 Valencia, Spain; (M.O.); (T.M.-G.); (N.P.-S.); (V.M.-G.); (A.R.-S.)
- Centro de Investigación Biomédica en Red (CIBER)-CV, 28029 Madrid, Spain; (E.d.D.); (L.M.-D.); (M.J.-N.)
- Cardiology Department, Hospital Clínico Universitario, 46010 Valencia, Spain
- Department of Medicine, University of Valencia, 46010 Valencia, Spain
| | - Amparo Ruiz-Saurí
- INCLIVA Biomedical Research Institute, 46100 Valencia, Spain; (M.O.); (T.M.-G.); (N.P.-S.); (V.M.-G.); (A.R.-S.)
- Department of Pathology, University of Valencia, 46010 Valencia, Spain;
- Centro de Investigación Biomédica en Red (CIBER)-CV, 28029 Madrid, Spain; (E.d.D.); (L.M.-D.); (M.J.-N.)
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2
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Park S. Interplay between polygenic variants related immune response and lifestyle factors mitigate the chances of stroke in a genome-wide association study. Br J Nutr 2024; 131:1813-1826. [PMID: 38374659 DOI: 10.1017/s0007114524000394] [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] [Indexed: 02/21/2024]
Abstract
We aimed to investigate the intricate interplay between genetic predisposition and lifestyle factors on stroke. We conducted a comprehensive genome-wide association study to identify the genetic variants linked to stroke in the participants who experienced a stroke event (cases; n 672) and those with no stroke history (non-stroke; n 58 029) in a large hospital-based cohort. Using generalised multifactor dimensionality reduction, we identified genetic variants with interactive effects and constructed polygenic risk scores (PRS) by summing up the risk alleles from the genetic variants. Food intake was measured with a validated semi-quantitative FFQ. No significant differences in stroke incidence were seen in demographic variables between the two groups. Among the metabolic indicators, only serum TAG levels were higher in males with stroke than those without stroke. The daily nutrient intake, dietary inflammation index, glycaemic index, dietary patterns, alcohol consumption, exercise and smoking did not display associations with the OR for stroke. The stroke-linked genetic variants were related to the IL-18 pathway. After accounting for covariates, the PRS derived from the 5-, 6- and 7-SNP models were positively associated with stroke chance with 2·5-, 2·9- and 2·8-fold. Furthermore, interactions between genetic predisposition and dietary components, including energy, carbohydrates, n-3 fatty acids and branched-chain amino acids (BCAA), that affected OR for stroke were observed. A high intake of energy, carbohydrates and BCAA and a low intake of n-3 fatty acids were positively associated with the chances of stroke occurrence. In conclusion, understanding the interaction between genetic variants and lifestyle factors can assist in developing stroke prevention and management strategies.
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Affiliation(s)
- Sunmin Park
- Department of Food and Nutrition, Obesity/Diabetes Research Center, Hoseo University, ChungNam-Do, 336-795, Asan, South Korea
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3
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Poore CP, Yang J, Wei S, Fhu CK, Bichler Z, Wang J, Soong TW, Liao P. Enhanced isradipine sensitivity in vascular smooth muscle cells due to hypoxia-induced Ca v1.2 splicing and RbFox1/Fox2 downregulation. FEBS J 2024. [PMID: 38794806 DOI: 10.1111/febs.17159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 03/15/2024] [Accepted: 05/07/2024] [Indexed: 05/26/2024]
Abstract
Calcium influx via the L-type voltage-gated Cav1.2 calcium channel in smooth muscle cells regulates vascular contraction. Calcium channel blockers (CCBs) are widely used to treat hypertension by inhibiting Cav1.2 channels. Using the vascular smooth muscle cell line, A7r5 and primary culture of cerebral vascular smooth muscle cells, we found that the expression and function of Cav1.2 channels are downregulated during hypoxia. Furthermore, hypoxia induces structural changes in Cav1.2 channels via alternative splicing. The expression of exon 9* is upregulated, whereas exon 33 is downregulated. Such structural alterations of Cav1.2 channels are caused by the decreased expression of RNA-binding proteins RNA-binding protein fox-1 homolog 1 and 2 (RbFox1 and RbFox2). Overexpression of RbFox1 and RbFox2 prevents hypoxia-induced exon 9* inclusion and exon 33 exclusion. Importantly, such structural alterations of the Cav1.2 channel partly contribute to the enhanced sensitivity of Cav1.2 to isradipine (a CCB) under hypoxia. Overexpression of RbFox1 and RbFox2 successfully reduces isradipine sensitivity in hypoxic smooth muscle cells. Our results suggest a new strategy to manage ischemic diseases such as stroke and myocardial infarction.
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Affiliation(s)
| | - Jialei Yang
- School of Public Health, Guangxi Medical University, Nanning, China
| | - Shunhui Wei
- Calcium Signaling Laboratory, National Neuroscience Institute, Singapore City, Singapore
| | - Chee Kong Fhu
- Calcium Signaling Laboratory, National Neuroscience Institute, Singapore City, Singapore
| | - Zoë Bichler
- Neurobehavioural Phenotyping Core, Center for Biometric Analysis, The Jackson Laboratory, Bar Harbor, ME, USA
| | - Juejin Wang
- Department of Physiology, Nanjing Medical University, Nanjing, China
| | - Tuck Wah Soong
- Department of Physiology, National University of Singapore, Singapore, Singapore
| | - Ping Liao
- Calcium Signaling Laboratory, National Neuroscience Institute, Singapore City, Singapore
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4
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Zhao J, Li L, Wang X, Shen J. KN-93 promotes HDAC4 nucleus translocation to promote fatty acid oxidation in myocardial infarction. Exp Cell Res 2024; 438:114050. [PMID: 38663474 DOI: 10.1016/j.yexcr.2024.114050] [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: 09/30/2023] [Revised: 02/23/2024] [Accepted: 04/13/2024] [Indexed: 04/30/2024]
Abstract
Myocardial infarction (MI) is a potentially fatal disease that causes a significant number of deaths worldwide. The strategy of increasing fatty acid oxidation in myocytes is considered a therapeutic avenue to accelerate metabolism to meet energy demands. We conducted the study aiming to investigate the effect of KN-93, which induces histone deacetylase (HDAC)4 shuttling to the nucleus, on fatty acid oxidation and the expression of related genes. A mouse model of myocardial infarction was induced by isoprenaline administration. Heart damage was assessed by the detection of cardiac injury markers. The level of fatty acid oxidation level was evaluated by testing the expression of related genes. Both immunofluorescence and immunoblotting in the cytosol or nucleus were utilized to observe the distribution of HDAC4. The interaction between HDAC4 and specificity protein (SP)1 was confirmed by co-immunoprecipitation. The acetylation level of SP1 was tested after KN-93 treatment and HDAC4 inhibitor. Oxygen consumption rate and immunoblotting experiments were used to determine whether the effect of KN-93 on increasing fatty acid oxidation is through HDAC4 and SP1. Administration of KN-93 significantly reduced cardiac injury in myocardial infarction and promoted fatty acid oxidation both in vitro and in vivo. KN-93 was shown to mediate nuclear translocation of HDAC4. HDAC4 was found to interact with SP1 and reduce SP1 acetylation. HDAC4 or SP1 inhibitors attenuated the effect of KN-93 on fatty acid oxidation. In conclusion, KN-93 promotes HDAC4 translocation to the nucleus, thereby potentially enhancing fatty acid oxidation by SP1.
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Affiliation(s)
- Jianqiao Zhao
- Department of Cardiology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, China
| | - Luona Li
- Department of Gastronomy, Nanjing Drum Tower Hospital, China
| | - Xindong Wang
- Department of Cardiology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, China
| | - Jianping Shen
- Department of Cardiology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, China.
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5
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Hou W, Yin S, Li P, Zhang L, Chen T, Qin D, Mustafa AU, Liu C, Song M, Qiu C, Xiong X, Wang J. Aberrant splicing of Ca V1.2 calcium channel induced by decreased Rbfox1 enhances arterial constriction during diabetic hyperglycemia. Cell Mol Life Sci 2024; 81:164. [PMID: 38575795 PMCID: PMC10995029 DOI: 10.1007/s00018-024-05198-z] [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: 10/22/2023] [Revised: 02/23/2024] [Accepted: 03/04/2024] [Indexed: 04/06/2024]
Abstract
Diabetic hyperglycemia induces dysfunctions of arterial smooth muscle, leading to diabetic vascular complications. The CaV1.2 calcium channel is one primary pathway for Ca2+ influx, which initiates vasoconstriction. However, the long-term regulation mechanism(s) for vascular CaV1.2 functions under hyperglycemic condition remains unknown. Here, Sprague-Dawley rats fed with high-fat diet in combination with low dose streptozotocin and Goto-Kakizaki (GK) rats were used as diabetic models. Isolated mesenteric arteries (MAs) and vascular smooth muscle cells (VSMCs) from rat models were used to assess K+-induced arterial constriction and CaV1.2 channel functions using vascular myograph and whole-cell patch clamp, respectively. K+-induced vasoconstriction is persistently enhanced in the MAs from diabetic rats, and CaV1.2 alternative spliced exon 9* is increased, while exon 33 is decreased in rat diabetic arteries. Furthermore, CaV1.2 channels exhibit hyperpolarized current-voltage and activation curve in VSMCs from diabetic rats, which facilitates the channel function. Unexpectedly, the application of glycated serum (GS), mimicking advanced glycation end-products (AGEs), but not glucose, downregulates the expression of the splicing factor Rbfox1 in VSMCs. Moreover, GS application or Rbfox1 knockdown dynamically regulates alternative exons 9* and 33, leading to facilitated functions of CaV1.2 channels in VSMCs and MAs. Notably, GS increases K+-induced intracellular calcium concentration of VSMCs and the vasoconstriction of MAs. These results reveal that AGEs, not glucose, long-termly regulates CaV1.2 alternative splicing events by decreasing Rbfox1 expression, thereby enhancing channel functions and increasing vasoconstriction under diabetic hyperglycemia. This study identifies the specific molecular mechanism for enhanced vasoconstriction under hyperglycemia, providing a potential target for managing diabetic vascular complications.
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Affiliation(s)
- Wei Hou
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
- Department of Physiology, Nanjing Medical University, Nanjing, Jiangsu, China
- The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou School of Clinical Medicine, Nanjing Medical University, Taizhou, Jiangsu, China
| | - Shumin Yin
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
- Department of Physiology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Pengpeng Li
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
- Department of Physiology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Ludan Zhang
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
- Department of Physiology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Tiange Chen
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
- Department of Physiology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Dongxia Qin
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
- Department of Physiology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Atta Ul Mustafa
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
- Department of Physiology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Caijie Liu
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
- Department of Physiology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Miaomiao Song
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
- Department of Physiology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Cheng Qiu
- Nanjing Comprehensive Stroke Center, Affiliated Nanjing Brain Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Xiaoqing Xiong
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.
- Department of Physiology, Nanjing Medical University, Nanjing, Jiangsu, China.
- The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou School of Clinical Medicine, Nanjing Medical University, Taizhou, Jiangsu, China.
| | - Juejin Wang
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.
- Department of Physiology, Nanjing Medical University, Nanjing, Jiangsu, China.
- The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou School of Clinical Medicine, Nanjing Medical University, Taizhou, Jiangsu, China.
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6
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Ortega M, Molina-García T, Gavara J, de Dios E, Pérez-Solé N, Marcos-Garcés V, Chorro FJ, Rios-Navarro C, Ruiz-Sauri A, Bodi V. Novel Targets Regulating the Role of Endothelial Cells and Angiogenesis after Infarction: A RNA Sequencing Analysis. Int J Mol Sci 2023; 24:15698. [PMID: 37958681 PMCID: PMC10649670 DOI: 10.3390/ijms242115698] [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: 10/05/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 11/15/2023] Open
Abstract
Endothelial cells (ECs) are a key target for cardioprotection due to their role in preserving cardiac microvasculature and homeostasis after myocardial infarction (MI). Our goal is to identify the genes involved in post-MI EC proliferation, EC apoptosis, and angiogenesis regulation via RNA-sequencing transcriptomic datasets. Using eight studies from the Gene Expression Omnibus, RNA-sequencing data from 92 mice submitted to different times of coronary ischemia or sham were chosen. Functional enrichment analysis was performed based on gene ontology biological processes (BPs). Apoptosis-related BPs are activated up to day 3 after ischemia onset, whereas endothelial proliferation occurs from day 3 onwards, including an overrepresentation of up to 37 genes. Endothelial apoptosis post-MI is triggered via both the extrinsic and intrinsic signaling pathways, as reflected by the overrepresentation of 13 and 2 specific genes, respectively. BPs implicated in new vessel formation are upregulated soon after ischemia onset, whilst the mechanisms aiming at angiogenesis repression can be detected at day 3. Overall, 51 pro-angiogenic and 29 anti-angiogenic factors displayed altered transcriptomic expression post-MI. This is the first study using RNA sequencing datasets to evaluate the genes participating in post-MI endothelium physiology and angiogenesis regulation. These novel data could lay the groundwork to advance understanding of the implication of ECs after MI.
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Affiliation(s)
- María Ortega
- INCLIVA Biomedical Research Institute, 46010 Valencia, Spain; (M.O.); (T.M.-G.); (N.P.-S.); (V.M.-G.); (F.J.C.); (V.B.)
| | - Tamara Molina-García
- INCLIVA Biomedical Research Institute, 46010 Valencia, Spain; (M.O.); (T.M.-G.); (N.P.-S.); (V.M.-G.); (F.J.C.); (V.B.)
| | - Jose Gavara
- Centro de Biomateriales e Ingeniería Tisular, Universidad Politécnica de Valencia, 46010 Valencia, Spain;
| | - Elena de Dios
- Centro de Investigación Biomédica en Red (CIBER)-CV, 28029 Madrid, Spain;
| | - Nerea Pérez-Solé
- INCLIVA Biomedical Research Institute, 46010 Valencia, Spain; (M.O.); (T.M.-G.); (N.P.-S.); (V.M.-G.); (F.J.C.); (V.B.)
| | - Victor Marcos-Garcés
- INCLIVA Biomedical Research Institute, 46010 Valencia, Spain; (M.O.); (T.M.-G.); (N.P.-S.); (V.M.-G.); (F.J.C.); (V.B.)
- Cardiology Department, Hospital Clínico Universitario, 46010 Valencia, Spain
| | - Francisco J. Chorro
- INCLIVA Biomedical Research Institute, 46010 Valencia, Spain; (M.O.); (T.M.-G.); (N.P.-S.); (V.M.-G.); (F.J.C.); (V.B.)
- Centro de Investigación Biomédica en Red (CIBER)-CV, 28029 Madrid, Spain;
- Cardiology Department, Hospital Clínico Universitario, 46010 Valencia, Spain
- Department of Medicine, University of Valencia, 46010 Valencia, Spain
| | - Cesar Rios-Navarro
- INCLIVA Biomedical Research Institute, 46010 Valencia, Spain; (M.O.); (T.M.-G.); (N.P.-S.); (V.M.-G.); (F.J.C.); (V.B.)
- Department of Pathology, University of Valencia, 46010 Valencia, Spain
| | - Amparo Ruiz-Sauri
- INCLIVA Biomedical Research Institute, 46010 Valencia, Spain; (M.O.); (T.M.-G.); (N.P.-S.); (V.M.-G.); (F.J.C.); (V.B.)
- Department of Pathology, University of Valencia, 46010 Valencia, Spain
| | - Vicente Bodi
- INCLIVA Biomedical Research Institute, 46010 Valencia, Spain; (M.O.); (T.M.-G.); (N.P.-S.); (V.M.-G.); (F.J.C.); (V.B.)
- Centro de Investigación Biomédica en Red (CIBER)-CV, 28029 Madrid, Spain;
- Cardiology Department, Hospital Clínico Universitario, 46010 Valencia, Spain
- Department of Medicine, University of Valencia, 46010 Valencia, Spain
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7
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Baloglu E. HIF-2α Controls Expression and Intracellular Trafficking of the α2-Subunit of Na,K-ATPase in Hypoxic H9c2 Cardiomyocytes. Biomedicines 2023; 11:2879. [PMID: 38001879 PMCID: PMC10669276 DOI: 10.3390/biomedicines11112879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 09/28/2023] [Accepted: 09/29/2023] [Indexed: 11/26/2023] Open
Abstract
The Na,K-ATPase (NKA) pump plays essential roles for optimal function of the heart. NKA activity decreases in necropsy materials from ischemic heart disease, heart failure and in experimental models. Cellular adaptation to hypoxia is regulated by hypoxia-induced transcription factors (HIF); we tested whether HIFs are involved in regulating the expression and intracellular dynamics of the α2-isoform of NKA (α2-NKA). HIF-1α and HIF-2α expression was suppressed in H9c2 cardiomyocytes by adenoviral infection, where cells were kept in 1% O2 for 24 h. The silencing efficiency of HIFs was tested on the mRNA and protein expression. We measured the mRNA expression of α2-NKA in HIF-silenced and hypoxia-exposed cells. The membrane and intracellular expression of α2-NKA was measured after labelling the cell surface with NHS-SS-biotin, immunoprecipitation and Western blotting. Hypoxia increased the mRNA expression of α2-NKA 5-fold compared to normoxic cells in an HIF-2α-sensitive manner. The plasma membrane expression of α2-NKA increased in hypoxia by 2-fold and was fully prevented by HIF-2α silencing. Intracellular expression of α2-NKA was not affected. These results showed for the first time that in hypoxic cardiomyocytes α2-NKA is transcriptionally and translationally regulated by HIF-2α. The molecular mechanism behind this regulation needs further investigation.
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Affiliation(s)
- Emel Baloglu
- Department of Medical Pharmacology, School of Medicine, Acibadem Mehmet Ali Aydinlar University, 34752 Istanbul, Turkey
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8
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Dery KJ, Kojima H, Kageyama S, Kadono K, Hirao H, Cheng B, Zhai Y, Farmer DG, Kaldas FM, Yuan X, Eltzschiasg HK, Kupiec-Weglinski JW. Alternative splicing of CEACAM1 by hypoxia-inducible factor-1α enhances tolerance to hepatic ischemia in mice and humans. Sci Transl Med 2023; 15:eadf2059. [PMID: 37531413 PMCID: PMC11164245 DOI: 10.1126/scitranslmed.adf2059] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 07/13/2023] [Indexed: 08/04/2023]
Abstract
Although alternative splicing (AS) drives transcriptional responses and cellular adaptation to environmental stresses, its contributions in organ transplantation have not been appreciated. We have shown that carcinoembryonic antigen-related cell adhesion molecule (Ceacam1; CD66a), a transmembrane biliary glycoprotein expressed in epithelial, endothelial, and immune cells, determines donor liver transplant quality. Here, we studied how AS of Ceacam1 affects ischemia-reperfusion injury (IRI) in mouse and human livers. We found that the short cytoplasmic isoform Ceacam1-S increased during early acute and late resolution phases of warm IRI injury in mice. Transfection of Ceacam1-deficient mouse hepatocytes with adenoviral Ceacam1-S mitigated hypoxia-induced loss of cellular adhesion by repressing the Ask1/p-p38 cell death pathway. Nucleic acid-blocking morpholinos, designed to selectively induce Ceacam1-S, protected hepatocyte cultures against temperature-induced stress in vitro. Luciferase and chromatin immunoprecipitation assays identified direct binding of hypoxia-inducible factor-1α (Hif-1α) to the mouse polypyrimidine tract binding protein 1 (Ptbp1) promoter region. Dimethyloxalylglycine protected mouse livers from warm IR stress and hepatocellular damage by inhibiting prolyl hydroxylase domain-containing protein 1 and promoting AS of Ceacam1-S. Last, analysis of 46 human donor liver grafts revealed that CEACAM1-S positively correlated with pretransplant HIF1A expression. This also correlated with better transplant outcomes, including reduced TIMP1, total bilirubin, proinflammatory MCP1, CXCL10 cytokines, immune activation markers IL17A, and incidence of delayed complications from biliary anastomosis. This translational study identified mouse Hif-1α-controlled AS of Ceacam1, through transcriptional regulation of Ptbp1 promoter region, as a functional underpinning of hepatoprotection against IR stress and tissue damage in liver transplantation.
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Affiliation(s)
- Kenneth J. Dery
- The Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation; David Geffen School of Medicine at UCLA, Los Angeles, CA, 90095 USA
| | - Hidenobu Kojima
- The Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation; David Geffen School of Medicine at UCLA, Los Angeles, CA, 90095 USA
| | - Shoichi Kageyama
- The Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation; David Geffen School of Medicine at UCLA, Los Angeles, CA, 90095 USA
| | - Kentaro Kadono
- The Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation; David Geffen School of Medicine at UCLA, Los Angeles, CA, 90095 USA
| | - Hirofumi Hirao
- The Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation; David Geffen School of Medicine at UCLA, Los Angeles, CA, 90095 USA
| | - Brian Cheng
- The Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation; David Geffen School of Medicine at UCLA, Los Angeles, CA, 90095 USA
| | - Yuan Zhai
- The Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation; David Geffen School of Medicine at UCLA, Los Angeles, CA, 90095 USA
| | - Douglas G. Farmer
- The Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation; David Geffen School of Medicine at UCLA, Los Angeles, CA, 90095 USA
| | - Fady M. Kaldas
- The Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation; David Geffen School of Medicine at UCLA, Los Angeles, CA, 90095 USA
| | - Xiaoyi Yuan
- Department of Anesthesiology, McGovern Medical School at UTHealth; Houston, TX, 77030 USA
| | - Holger K. Eltzschiasg
- Department of Anesthesiology, McGovern Medical School at UTHealth; Houston, TX, 77030 USA
| | - Jerzy W. Kupiec-Weglinski
- The Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation; David Geffen School of Medicine at UCLA, Los Angeles, CA, 90095 USA
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Baloglu E. Hypoxic Stress-Dependent Regulation of Na,K-ATPase in Ischemic Heart Disease. Int J Mol Sci 2023; 24:ijms24097855. [PMID: 37175562 PMCID: PMC10177966 DOI: 10.3390/ijms24097855] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 04/19/2023] [Accepted: 04/20/2023] [Indexed: 05/15/2023] Open
Abstract
In cardiomyocytes, regular activity of the Na,K-ATPase (NKA) and its Na/K pump activity is essential for maintaining ion gradients, excitability, propagation of action potentials, electro-mechanical coupling, trans-membrane Na+ and Ca2+ gradients and, thus, contractility. The activity of NKA is impaired in ischemic heart disease and heart failure, which has been attributed to decreased expression of the NKA subunits. Decreased NKA activity leads to intracellular Na+ and Ca2+ overload, diastolic dysfunction and arrhythmias. One signal likely related to these events is hypoxia, where hypoxia-inducible factors (HIF) play a critical role in the adaptation of cells to low oxygen tension. HIF activity increases in ischemic heart, hypertension, heart failure and cardiac fibrosis; thus, it might contribute to the impaired function of NKA. This review will mainly focus on the regulation of NKA in ischemic heart disease in the context of stressed myocardium and the hypoxia-HIF axis and argue on possible consequences of treatment.
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Affiliation(s)
- Emel Baloglu
- Department of Medical Pharmacology, School of Medicine, Acibadem Mehmet Ali Aydinlar University, 34752 Istanbul, Turkey
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10
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Yang X, Sha X, Cao Y, Wang W, Shi J. Cx43 overexpression reduce the incidence of obstructive sleep apnea associated atrial fibrillation via the CaMKⅡγ/HIF-1 axis. Biochem Biophys Res Commun 2023; 659:62-71. [PMID: 37037067 DOI: 10.1016/j.bbrc.2023.03.084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 03/26/2023] [Accepted: 03/31/2023] [Indexed: 04/03/2023]
Abstract
BACKGROUND Previous studies by our group have demonstrated chronic intermittent hypoxia (CIH) can decrease connexin 43 (Cx43) protein expression and thus increase atrial fibrillation (AF) inducibility. Cardiac sympathetic denervation (CSD) can reduce AF and increase Cx43 expression, however, the underlying molecular mechanisms and signaling pathways are still unclear. METHODS AND RESULTS An obstructive sleep apnea (OSA) rat model in vivo experiments and CIH H9c2 cells model in vitro experiments were used to figure out the roles and underlying mechanisms of Cx43 on OSA-associated AF. In this study, we examined the expression of Cx43, CaMKⅡγ, Bax, Caspase 3, HIF-1 Bcl-2, Tunel, and CPB/p300, to discover the association between proteins and the mechanism of regulatory changes. The downstream proteins of Cx43 were calculated by gene sequencing and data analysis. We found Cx43 expression was significantly downregulated after CIH exposure in rat and H9c2 cells. Active caspase-3 and Bax at CIH+8 h group are high, but decreased at OE+8 h group. The Bcl-2 expression was higher in the N and OE+8 h group than CIH+8 h group. TUNEL-positive cells from the CIH+8 h group was markedly higher. Furthermore, Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses indicated Cx43 overexpression inhibited the CaMKIIγ expression, and CaMKIIγ was involved in the HIF-1 signaling pathway. In addition, we also found Cx43 overexpression remarkably decreased the HIF-1 protein and p300 mRNA expression, which inhibits the CaMKIIγ/HIF-1 signaling pathway. CONCLUSIONS Taken together, these results suggested Cx43 overexpression inhibits the expression of calcium/calmodulin dependent protein CaMKⅡγ via the Cx43/CaMKIIγ/HIF-1 axis, which finally reduces the myocardial apoptosis and incidence of AF.
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11
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Ortega M, Ríos-Navarro C, Gavara J, de Dios E, Perez-Solé N, Marcos-Garcés V, Ferrández-Izquierdo A, Bodí V, Ruiz-Saurí A. Meta-Analysis of Extracellular Matrix Dynamics after Myocardial Infarction Using RNA-Sequencing Transcriptomic Database. Int J Mol Sci 2022; 23:ijms232415615. [PMID: 36555255 PMCID: PMC9779146 DOI: 10.3390/ijms232415615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 12/05/2022] [Accepted: 12/07/2022] [Indexed: 12/13/2022] Open
Abstract
Extracellular matrix (ECM) changes after myocardial infarction (MI) need precise regulation, and next-generation sequencing technologies provide omics data that can be used in this context. We performed a meta-analysis using RNA-sequencing transcriptomic datasets to identify genes involved in post-MI ECM turnover. Eight studies available in Gene Expression Omnibus were selected following the inclusion criteria. We compare RNA-sequencing data from 92 mice submitted to permanent coronary ligation or sham, identifying differentially expressed genes (p-value < 0.05 and Log2FoldChange ≥ 2). Functional enrichment analysis was performed based on Gene Ontology biological processes (BPs). BPs implicated in response to extracellular stimulus, regulation of ECM organization, and ECM disassembly were detected soon after ischemia onset. ECM disassembly occurred between days one to seven post-MI, compared with ECM assembly from day seven onwards. We identified altered mRNA expression of 19 matrix metalloproteinases and four tissue inhibitors of metalloproteinases at post-infarcted ECM remodeling and altered transcriptomic expression of 42 genes encoding 26 collagen subunits at the fibrotic stage. To our knowledge, this is the first meta-analysis using RNA-sequencing datasets to evaluate post-infarcted cardiac interstitium healing, revealing previously unknown mechanisms and molecules actively implicated in ECM remodeling post-MI, which warrant further validation.
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Affiliation(s)
- María Ortega
- INCLIVA health Research Institute, 46010 Valencia, Spain
| | | | - Jose Gavara
- Centro de Biomateriales e Ingeniería Tisular, Universidad Politécnica de Valencia, 46022 Valencia, Spain
| | - Elena de Dios
- Department of Medicine, University of Valencia,46010 Valencia, Spain
- Centro de Investigación Biomédica en Red (CIBER)-CV, 28029 Madrid, Spain
| | | | - Victor Marcos-Garcés
- INCLIVA health Research Institute, 46010 Valencia, Spain
- Cardiology Department, Hospital Clínico Universitario, 46010 Valencia, Spain
| | - Antonio Ferrández-Izquierdo
- INCLIVA health Research Institute, 46010 Valencia, Spain
- Department of Pathology, University of Valencia, 46010 Valencia, Spain
- Pathology Department, Hospital Clínico Universitario, 46010 Valencia, Spain
| | - Vicente Bodí
- INCLIVA health Research Institute, 46010 Valencia, Spain
- Department of Medicine, University of Valencia,46010 Valencia, Spain
- Centro de Investigación Biomédica en Red (CIBER)-CV, 28029 Madrid, Spain
- Cardiology Department, Hospital Clínico Universitario, 46010 Valencia, Spain
- Correspondence: ; Tel.: +34-96-3862658
| | - Amparo Ruiz-Saurí
- INCLIVA health Research Institute, 46010 Valencia, Spain
- Department of Pathology, University of Valencia, 46010 Valencia, Spain
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12
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D’Agostino N, Li W, Wang D. High-throughput transcriptomics. Sci Rep 2022; 12:20313. [PMID: 36446824 PMCID: PMC9708670 DOI: 10.1038/s41598-022-23985-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Indexed: 11/30/2022] Open
Affiliation(s)
- Nunzio D’Agostino
- grid.4691.a0000 0001 0790 385XDepartment of Agricultural Sciences, University of Naples Federico II, Portici, NA Italy
| | - Wenli Li
- grid.512861.9Dairy Forage Research Center, USDA-ARS, 1925 Linden Drive, Madison, WI 53706 USA
| | - Dapeng Wang
- grid.7445.20000 0001 2113 8111National Heart and Lung Institute, Imperial College London, London, SW3 6LY UK
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Diminished Rbfox1 increases vascular constriction by dynamically regulating alternative splicing of CaV1.2 calcium channel in hypertension. Clin Sci (Lond) 2022; 136:803-817. [PMID: 35543237 DOI: 10.1042/cs20220226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 05/08/2022] [Accepted: 05/10/2022] [Indexed: 11/17/2022]
Abstract
Calcium influx from depolarized CaV1.2 calcium channels triggers the contraction of vascular smooth muscle cells (VSMCs), which is important for maintaining vascular myogenic tone and blood pressure. The function of CaV1.2 channel can be subtly modulated by alternative splicing (AS), and its aberrant splicing involves in the pathogenesis of multiple cardiovascular diseases. The RNA binding protein Rbfox1 is reported to regulate the AS events of CaV1.2 channel in the neuronal development, but its potential roles in vascular CaV1.2 channels and vasoconstriction remain undefined. Here, we detect Rbfox1 is expressed in rat vascular smooth muscles. Moreover, the protein level of Rbfox1 is dramatically decreased in the hypertensive small arteries from spontaneously hypertensive rats in comparison to normotensive ones from Wistar-Kyoto rats. In VSMCs, Rbfox1 could dynamically regulate the AS of CaV1.2 exons 9* and 33. By whole-cell patch clamp, we identify knockdown of Rbfox1 induces the hyperpolarization of CaV1.2 current-voltage relationship curve in VSMCs. Furthermore, siRNA-mediated knockdown of Rbfox1 increases the K+-induced constriction of rat mesenteric arteries. In summary, our results indicate Rbfox1 modulates vascular constriction by dynamically regulating CaV1.2 alternative exons 9* and 33. Therefore, our work elucidates the underlying mechanisms for CaV1.2 channels regulation and provides a potential therapeutic target for hypertension.
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Alternative Splicing in Cardiovascular Disease-A Survey of Recent Findings. Genes (Basel) 2021; 12:genes12091457. [PMID: 34573439 PMCID: PMC8469243 DOI: 10.3390/genes12091457] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 09/11/2021] [Accepted: 09/16/2021] [Indexed: 12/22/2022] Open
Abstract
Alternative splicing, a driver of posttranscriptional variance, differs from canonical splicing by arranging the introns and exons of an immature pre-mRNA transcript in a multitude of different ways. Although alternative splicing was discovered almost half a century ago, estimates of the proportion of genes that undergo alternative splicing have risen drastically over the last two decades. Deep sequencing methods and novel bioinformatic algorithms have led to new insights into the prevalence of spliced variants, tissue-specific splicing patterns and the significance of alternative splicing in development and disease. Thus far, the role of alternative splicing has been uncovered in areas ranging from heart development, the response to myocardial infarction to cardiac structural disease. Circular RNAs, a product of alternative back-splicing, were initially discovered in 1976, but landmark publications have only recently identified their regulatory role, tissue-specific expression, and transcriptomic abundance, spurring a renewed interest in the topic. The aim of this review is to provide a brief insight into some of the available findings on the role of alternative splicing in cardiovascular disease, with a focus on atherosclerosis, myocardial infarction, heart failure, dilated cardiomyopathy and circular RNAs in myocardial infarction.
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