1
|
Liu S, Su L, Li J, Zhang Y, Hu X, Wang P, Liu P, Ye J. Inhibition of miR-146b-5p alleviates isoprenaline-induced cardiac hypertrophy via regulating DFCP1. Mol Cell Endocrinol 2024; 589:112252. [PMID: 38649132 DOI: 10.1016/j.mce.2024.112252] [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: 02/20/2024] [Revised: 04/18/2024] [Accepted: 04/19/2024] [Indexed: 04/25/2024]
Abstract
Pathological cardiac hypertrophy often precedes heart failure due to various stimuli, yet effective clinical interventions remain limited. Recently, microRNAs (miRNAs) have been identified as critical regulators of cardiovascular development. In this study, we investigated the role of miR-146b-5p and its underlying mechanisms of action in cardiac hypertrophy. Isoprenaline (ISO) treatment induced significant hypertrophy and markedly enhanced the expression of miR-146b-5p in cultured neonatal rat cardiomyocytes and hearts of C57BL/6 mice. Transfection with the miR-146b-5p mimic led to cardiomyocyte hypertrophy accompanied by autophagy inhibition. Conversely, miR-146b-5p inhibition significantly alleviated ISO-induced autophagy depression, thereby mitigating cardiac hypertrophy both in vitro and in vivo. Our results showed that the autophagy-related mediator double FYVE domain-containing protein 1 (DFCP1) is a target of miR-146b-5p. MiR-146b-5p blocked autophagic flux in cardiomyocytes by suppressing DFCP1, thus contributing to hypertrophy. These findings revealed that miR-146b-5p is a potential regulator of autophagy associated with the onset of cardiac hypertrophy, suggesting a possible therapeutic strategy involving the inhibition of miR-146b-5p.
Collapse
Affiliation(s)
- Siling Liu
- School of Pharmaceutical Sciences, Sun Yat-Sen University, National and Local United Engineering Lab of Druggability and New Drugs Evaluation, Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, China
| | - Linjie Su
- School of Pharmaceutical Sciences, Sun Yat-Sen University, National and Local United Engineering Lab of Druggability and New Drugs Evaluation, Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, China
| | - Jie Li
- School of Pharmaceutical Sciences, Sun Yat-Sen University, National and Local United Engineering Lab of Druggability and New Drugs Evaluation, Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, China
| | - Yuexin Zhang
- School of Pharmaceutical Sciences, Sun Yat-Sen University, National and Local United Engineering Lab of Druggability and New Drugs Evaluation, Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, China
| | - Xiaopei Hu
- School of Pharmaceutical Sciences, Sun Yat-Sen University, National and Local United Engineering Lab of Druggability and New Drugs Evaluation, Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, China
| | - Pengcheng Wang
- School of Pharmaceutical Sciences, Sun Yat-Sen University, National and Local United Engineering Lab of Druggability and New Drugs Evaluation, Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, China
| | - Peiqing Liu
- School of Pharmaceutical Sciences, Sun Yat-Sen University, National and Local United Engineering Lab of Druggability and New Drugs Evaluation, Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, China.
| | - Jiantao Ye
- School of Pharmaceutical Sciences, Sun Yat-Sen University, National and Local United Engineering Lab of Druggability and New Drugs Evaluation, Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, China.
| |
Collapse
|
2
|
Khalilimeybodi A, Saucerman JJ, Rangamani P. Modeling cardiomyocyte signaling and metabolism predicts genotype-to-phenotype mechanisms in hypertrophic cardiomyopathy. Comput Biol Med 2024; 175:108499. [PMID: 38677172 PMCID: PMC11175993 DOI: 10.1016/j.compbiomed.2024.108499] [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: 01/20/2024] [Revised: 04/17/2024] [Accepted: 04/21/2024] [Indexed: 04/29/2024]
Abstract
Familial hypertrophic cardiomyopathy (HCM) is a significant precursor of heart failure and sudden cardiac death, primarily caused by mutations in sarcomeric and structural proteins. Despite the extensive research on the HCM genotype, the complex and context-specific nature of many signaling and metabolic pathways linking the HCM genotype to phenotype has hindered therapeutic advancements for patients. Here, we have developed a computational model of HCM encompassing cardiomyocyte signaling and metabolic networks and their associated interactions. Utilizing a stochastic logic-based ODE approach, we linked cardiomyocyte signaling to the metabolic network through a gene regulatory network and post-translational modifications. We validated the model against published data on activities of signaling species in the HCM context and transcriptomes of two HCM mouse models (i.e., R403Q-αMyHC and R92W-TnT). Our model predicts that HCM mutation induces changes in metabolic functions such as ATP synthase deficiency and a transition from fatty acids to carbohydrate metabolism. The model indicated major shifts in glutamine-related metabolism and increased apoptosis after HCM-induced ATP synthase deficiency. We predicted that the transcription factors STAT, SRF, GATA4, TP53, and FoxO are the key regulators of cardiomyocyte hypertrophy and apoptosis in HCM in alignment with experiments. Moreover, we identified shared (e.g., activation of PGC1α by AMPK, and FHL1 by titin) and context-specific mechanisms (e.g., regulation of Ca2+ sensitivity by titin in HCM patients) that may control genotype-to-phenotype transition in HCM across different species or mutations. We also predicted potential combination drug targets for HCM (e.g., mavacamten plus ROS inhibitors) preventing or reversing HCM phenotype (i.e., hypertrophic growth, apoptosis, and metabolic remodeling) in cardiomyocytes. This study provides new insights into mechanisms linking genotype to phenotype in familial hypertrophic cardiomyopathy and offers a framework for assessing new treatments and exploring variations in HCM experimental models.
Collapse
Affiliation(s)
- A Khalilimeybodi
- Department of Mechanical and Aerospace Engineering, Jacobs School of Engineering, University of California San Diego, La Jolla CA 92093, United States of America
| | - Jeffrey J Saucerman
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, United States of America; Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA, United States of America
| | - P Rangamani
- Department of Mechanical and Aerospace Engineering, Jacobs School of Engineering, University of California San Diego, La Jolla CA 92093, United States of America.
| |
Collapse
|
3
|
Velayutham N, Calderon MU, Alfieri CM, Padula SL, van Leeuwen FN, Scheijen B, Yutzey KE. Btg1 and Btg2 regulate neonatal cardiomyocyte cell cycle arrest. J Mol Cell Cardiol 2023; 179:30-41. [PMID: 37062247 PMCID: PMC10192094 DOI: 10.1016/j.yjmcc.2023.03.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 03/21/2023] [Accepted: 03/29/2023] [Indexed: 04/18/2023]
Abstract
Rodent cardiomyocytes undergo mitotic arrest in the first postnatal week. Here, we investigate the role of transcriptional co-regulator Btg2 (B-cell translocation gene 2) and functionally-similar homolog Btg1 in postnatal cardiomyocyte cell cycling and maturation. Btg1 and Btg2 (Btg1/2) are expressed in neonatal C57BL/6 mouse left ventricles coincident with cardiomyocyte cell cycle arrest. Btg1/2 constitutive double knockout (DKO) mouse hearts exhibit increased pHH3+ mitotic cardiomyocytes compared to Wildtype at postnatal day (P)7, but not at P30. Similarly, neonatal AAV9-mediated Btg1/2 double knockdown (DKD) mouse hearts exhibit increased EdU+ mitotic cardiomyocytes compared to Scramble AAV9-shRNA controls at P7, but not at P14. In neonatal rat ventricular myocyte (NRVM) cultures, siRNA-mediated Btg1/2 single and double knockdown cohorts showed increased EdU+ cardiomyocytes compared to Scramble siRNA controls, without increase in binucleation or nuclear DNA content. RNAseq analyses of Btg1/2-depleted NRVMs support a role for Btg1/2 in inhibiting cell proliferation, and in modulating reactive oxygen species response pathways, implicated in neonatal cardiomyocyte cell cycle arrest. Together, these data identify Btg1 and Btg2 as novel contributing factors in mammalian cardiomyocyte cell cycle arrest after birth.
Collapse
Affiliation(s)
- Nivedhitha Velayutham
- Molecular and Developmental Biology Graduate Program, Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA; The Heart Institute, Division of Molecular Cardiovascular Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Maria Uscategui Calderon
- Molecular and Developmental Biology Graduate Program, Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA; The Heart Institute, Division of Molecular Cardiovascular Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Christina M Alfieri
- The Heart Institute, Division of Molecular Cardiovascular Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Stephanie L Padula
- The Heart Institute, Division of Molecular Cardiovascular Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | | | | | - Katherine E Yutzey
- Molecular and Developmental Biology Graduate Program, Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA; The Heart Institute, Division of Molecular Cardiovascular Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
| |
Collapse
|
4
|
Kim JD, Kwon C, Nakamura K, Muromachi N, Mori H, Muroi SI, Yamada Y, Saito H, Nakagawa Y, Fukamizu A. Increased angiotensin II coupled with decreased Adra1a expression enhances cardiac hypertrophy in pregnancy-associated hypertensive mice. J Biol Chem 2023; 299:102964. [PMID: 36736425 PMCID: PMC10011504 DOI: 10.1016/j.jbc.2023.102964] [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: 02/27/2022] [Revised: 12/27/2022] [Accepted: 01/26/2023] [Indexed: 02/05/2023] Open
Abstract
Cardiac hypertrophy is a crucial risk factor for hypertensive disorders during pregnancy, but its progression during pregnancy remains unclear. We previously showed cardiac hypertrophy in a pregnancy-associated hypertensive (PAH) mouse model, in which an increase in angiotensin II (Ang II) levels was induced by human renin and human angiotensinogen, depending on pregnancy conditions. Here, to elucidate the factors involved in the progression of cardiac hypertrophy, we performed a comprehensive analysis of changes in gene expression in the hearts of PAH mice and compared them with those in control mice. We found that alpha-1A adrenergic receptor (Adra1a) mRNA levels in the heart were significantly reduced under PAH conditions, whereas the renin-angiotensin system was upregulated. Furthermore, we found that Adra1a-deficient PAH mice exhibited more severe cardiac hypertrophy than PAH mice. Our study suggests that Adra1a levels are regulated by renin-angiotensin system and that changes in Adra1a expression are involved in progressive cardiac hypertrophy in PAH mice.
Collapse
Affiliation(s)
- Jun-Dal Kim
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance, University of Tsukuba, Tsukuba, Ibaraki, Japan; Division of Complex Bioscience Research, Department of Research and Development, Institute of National Medicine, University of Toyama, Toyama, Japan; AMED-CREST, Japan Agency for Medical Research and Development, Chiyoda-ku, Tokyo, Japan.
| | - Chulwon Kwon
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Kanako Nakamura
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance, University of Tsukuba, Tsukuba, Ibaraki, Japan; Graduate School of Sciences and Technology, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Naoto Muromachi
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance, University of Tsukuba, Tsukuba, Ibaraki, Japan; Doctoral Program in Life and Agricultural Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Haruka Mori
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance, University of Tsukuba, Tsukuba, Ibaraki, Japan; Graduate School of Sciences and Technology, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Shin-Ichi Muroi
- Division of Complex Bioscience Research, Department of Research and Development, Institute of National Medicine, University of Toyama, Toyama, Japan; AMED-CREST, Japan Agency for Medical Research and Development, Chiyoda-ku, Tokyo, Japan
| | - Yasunari Yamada
- Division of Complex Bioscience Research, Department of Research and Development, Institute of National Medicine, University of Toyama, Toyama, Japan
| | - Hodaka Saito
- Division of Complex Bioscience Research, Department of Research and Development, Institute of National Medicine, University of Toyama, Toyama, Japan
| | - Yoshimi Nakagawa
- Division of Complex Bioscience Research, Department of Research and Development, Institute of National Medicine, University of Toyama, Toyama, Japan
| | - Akiyoshi Fukamizu
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance, University of Tsukuba, Tsukuba, Ibaraki, Japan; AMED-CREST, Japan Agency for Medical Research and Development, Chiyoda-ku, Tokyo, Japan; International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, Japan.
| |
Collapse
|
5
|
Gorski PP, Raastad T, Ullrich M, Turner DC, Hallén J, Savari SI, Nilsen TS, Sharples AP. Aerobic exercise training resets the human skeletal muscle methylome 10 years after breast cancer treatment and survival. FASEB J 2023; 37:e22720. [PMID: 36542473 DOI: 10.1096/fj.202201510rr] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 12/02/2022] [Accepted: 12/07/2022] [Indexed: 12/24/2022]
Abstract
Cancer survivors suffer impairments in skeletal muscle in terms of reduced mass and function. Interestingly, human skeletal muscle possesses an epigenetic memory of earlier stimuli, such as exercise. Long-term retention of epigenetic changes in skeletal muscle following cancer survival and/or exercise training has not yet been studied. We, therefore, investigated genome-wide DNA methylation (methylome) in skeletal muscle following a 5-month, 3/week aerobic-training intervention in breast cancer survivors 10-14 years after diagnosis and treatment. These results were compared to breast cancer survivors who remained untrained and to age-matched controls with no history of cancer, who undertook the same training intervention. Skeletal muscle biopsies were obtained from 23 females before(pre) and after(post) the 5-month training period. InfiniumEPIC 850K DNA methylation arrays and RT-PCR for gene expression were performed. The breast cancer survivors displayed a significant retention of increased DNA methylation (i.e., hypermethylation) at a larger number of differentially methylated positions (DMPs) compared with healthy age-matched controls pre training. Training in cancer survivors led to an exaggerated number of DMPs with a hypermethylated signature occurring at non-regulatory regions compared with training in healthy age-matched controls. However, the opposite occurred in important gene regulatory regions, where training in cancer survivors elicited a considerable reduction in methylation (i.e., hypomethylation) in 99% of the DMPs located in CpG islands within promoter regions. Importantly, training was able to reverse the hypermethylation identified in cancer survivors back toward a hypomethylated signature that was observed pre training in healthy age-matched controls at 300 (out of 881) of these island/promoter-associated CpGs. Pathway enrichment analysis identified training in cancer survivors evoked a predominantly hypomethylated signature in pathways associated with cell cycle, DNA replication/repair, transcription, translation, mTOR signaling, and the proteosome. Differentially methylated region (DMR) analysis also identified genes: BAG1, BTG2, CHP1, KIFC1, MKL2, MTR, PEX11B, POLD2, S100A6, SNORD104, and SPG7 as hypermethylated in breast cancer survivors, with training reversing these CpG island/promoter-associated DMRs toward a hypomethylated signature. Training also elicited a largely different epigenetic response in healthy individuals than that observed in cancer survivors, with very few overlapping changes. Only one gene, SIRT2, was identified as having altered methylation in cancer survivors at baseline and after training in both the cancer survivors and healthy controls. Overall, human skeletal muscle may retain a hypermethylated signature as long as 10-14 years after breast cancer treatment/survival. Five months of aerobic training reset the skeletal muscle methylome toward signatures identified in healthy age-matched individuals in gene regulatory regions.
Collapse
Affiliation(s)
- Piotr P Gorski
- Institute for Physical Performance (IFP), Norwegian School of Sport Sciences, Oslo, Norway
| | - Truls Raastad
- Institute for Physical Performance (IFP), Norwegian School of Sport Sciences, Oslo, Norway
| | - Max Ullrich
- Institute for Physical Performance (IFP), Norwegian School of Sport Sciences, Oslo, Norway
| | - Daniel C Turner
- Institute for Physical Performance (IFP), Norwegian School of Sport Sciences, Oslo, Norway
| | - Jostein Hallén
- Institute for Physical Performance (IFP), Norwegian School of Sport Sciences, Oslo, Norway
| | - Sebastian Imre Savari
- Department of Cardiology, Oslo University Hospital, Oslo, Norway.,Precision Health Center for Optimized Cardiac Care, Oslo University Hospital, Oslo, Norway
| | - Tormod S Nilsen
- Institute for Physical Performance (IFP), Norwegian School of Sport Sciences, Oslo, Norway
| | - Adam P Sharples
- Institute for Physical Performance (IFP), Norwegian School of Sport Sciences, Oslo, Norway
| |
Collapse
|
6
|
Tabata T, Masumura Y, Higo S, Kunimatsu S, Kameda S, Inoue H, Okuno S, Ogawa S, Takashima S, Watanabe M, Miyagawa S, Hikoso S, Sakata Y. Multiplexed measurement of cell type-specific calcium kinetics using high-content image analysis combined with targeted gene disruption. Biochem Biophys Res Commun 2022; 637:40-49. [PMID: 36375249 DOI: 10.1016/j.bbrc.2022.10.088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 10/25/2022] [Indexed: 11/06/2022]
Abstract
Kinetic analysis of intracellular calcium (Ca2+) in cardiomyocytes is commonly used to determine the pathogenicity of genetic mutations identified in patients with dilated cardiomyopathy (DCM). Conventional methods for measuring Ca2+ kinetics target whole-well cultured cardiomyocytes and therefore lack information concerning individual cells. Results are also affected by heterogeneity in cell populations. Here, we developed an analytical method using CRISPR/Cas9 genome editing combined with high-content image analysis (HCIA) that links cell-by-cell Ca2+ kinetics and immunofluorescence images in thousands of cardiomyocytes at a time. After transfecting cultured mouse cardiomyocytes that constitutively express Cas9 with gRNAs, we detected a prolonged action potential duration specifically in Serca2a-depleted ventricular cardiomyocytes in mixed culture. To determine the phenotypic effect of a frameshift mutation in PKD1 in a patient with DCM, we introduced the mutation into Cas9-expressing cardiomyocytes by gRNA transfection and found that it decreases the expression of PKD1-encoded PC1 protein that co-localizes specifically with Serca2a and L-type voltage-gated calcium channels. We also detected the suppression of Ca2+ amplitude in ventricular cardiomyocytes with decreased PC1 expression in mixed culture. Our HCIA method provides comprehensive kinetic and static information on individual cardiomyocytes and allows the pathogenicity of mutations to be determined rapidly.
Collapse
Affiliation(s)
- Tomoka Tabata
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Yuki Masumura
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Shuichiro Higo
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan; Department of Medical Therapeutics for Heart Failure, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan.
| | - Suzuka Kunimatsu
- Department of Clinical Laboratory and Biomedical Sciences, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Satoshi Kameda
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Hiroyuki Inoue
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Shota Okuno
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Shou Ogawa
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Seiji Takashima
- Department of Medical Biochemistry, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Mikio Watanabe
- Department of Clinical Laboratory and Biomedical Sciences, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Shigeru Miyagawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Shungo Hikoso
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Yasushi Sakata
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| |
Collapse
|
7
|
Hoffman MJ, Takizawa A, Jensen ES, Schilling R, Grzybowski M, Geurts AM, Dwinell MR. Btg2 mutation induces renal injury and impairs blood pressure control in female rats. Physiol Genomics 2022; 54:231-241. [PMID: 35503009 DOI: 10.1152/physiolgenomics.00167.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Hypertension (HTN) is a complex disease influenced by heritable genetic elements and environmental interactions. Dietary salt is among the most influential modifiable factors contributing to increased blood pressure (BP). It is well established that men and women develop BP impairment in different patterns and a recent emphasis has been placed on identifying mechanisms leading to the differences observed between the sexes in HTN development. The current work reported here builds on an extensive genetic mapping experiment which sought to identify genetic determinants of salt sensitive (SS) HTN using the Dahl SS rat. BTG anti-proliferation factor 2 (Btg2) was previously identified by our group as a candidate gene contributing to SS HTN in female rats. In the current study, Btg2 was mutated using TALEN targeted gene disruption on the SSBN congenic rat background. The Btg2 mutated rats exhibited impaired BP and proteinuria responses to a high salt diet compared to wild type rats. Differences in body weight, mutant pup viability, skeletal morphology, and adult nephron density suggest a potential role for Btg2 in developmental signaling pathways. Subsequent cell cycle gene expression assessment provides several additional signaling pathways that Btg2 may function through during salt handling in the kidney. The expression analysis also identified several potential upstream targets that can be explored to further isolate therapeutic approaches for SS HTN.
Collapse
Affiliation(s)
- Matthew J Hoffman
- Genomic Sciences and Precision Medicine Center, Medical College of Wisconsin, Milwaukee, WI, United States.,Department of Physiology, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Akiko Takizawa
- Genomic Sciences and Precision Medicine Center, Medical College of Wisconsin, Milwaukee, WI, United States.,Department of Physiology, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Eric S Jensen
- Biomedical Research Center, Medical College of Wisconsin, Milwaukee, WI, United States.,Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Rebecca Schilling
- Genomic Sciences and Precision Medicine Center, Medical College of Wisconsin, Milwaukee, WI, United States.,Department of Physiology, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Michael Grzybowski
- Genomic Sciences and Precision Medicine Center, Medical College of Wisconsin, Milwaukee, WI, United States.,Department of Physiology, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Aron M Geurts
- Genomic Sciences and Precision Medicine Center, Medical College of Wisconsin, Milwaukee, WI, United States.,Department of Physiology, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Melinda R Dwinell
- Genomic Sciences and Precision Medicine Center, Medical College of Wisconsin, Milwaukee, WI, United States.,Department of Physiology, Medical College of Wisconsin, Milwaukee, WI, United States
| |
Collapse
|
8
|
Wang J, Rattner A, Nathans J. A transcriptome atlas of the mouse iris at single-cell resolution defines cell types and the genomic response to pupil dilation. eLife 2021; 10:e73477. [PMID: 34783308 PMCID: PMC8594943 DOI: 10.7554/elife.73477] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 10/25/2021] [Indexed: 01/02/2023] Open
Abstract
The iris controls the level of retinal illumination by controlling pupil diameter. It is a site of diverse ophthalmologic diseases and it is a potential source of cells for ocular auto-transplantation. The present study provides foundational data on the mouse iris based on single nucleus RNA sequencing. More specifically, this work has (1) defined all of the major cell types in the mouse iris and ciliary body, (2) led to the discovery of two types of iris stromal cells and two types of iris sphincter cells, (3) revealed the differences in cell type-specific transcriptomes in the resting vs. dilated states, and (4) identified and validated antibody and in situ hybridization probes that can be used to visualize the major iris cell types. By immunostaining for specific iris cell types, we have observed and quantified distortions in nuclear morphology associated with iris dilation and clarified the neural crest contribution to the iris by showing that Wnt1-Cre-expressing progenitors contribute to nearly all iris cell types, whereas Sox10-Cre-expressing progenitors contribute only to stromal cells. This work should be useful as a point of reference for investigations of iris development, disease, and pharmacology, for the isolation and propagation of defined iris cell types, and for iris cell engineering and transplantation.
Collapse
Affiliation(s)
- Jie Wang
- Department of Molecular Biology and Genetics, Johns Hopkins University School of MedicineBaltimoreUnited States
- Howard Hughes Medical Institute, Johns Hopkins University School of MedicineBaltimoreUnited States
| | - Amir Rattner
- Department of Molecular Biology and Genetics, Johns Hopkins University School of MedicineBaltimoreUnited States
| | - Jeremy Nathans
- Department of Molecular Biology and Genetics, Johns Hopkins University School of MedicineBaltimoreUnited States
- Howard Hughes Medical Institute, Johns Hopkins University School of MedicineBaltimoreUnited States
- Department of Neuroscience, Johns Hopkins University School of MedicineBaltimoreUnited States
- Department of Ophthalmology, Johns Hopkins University School of MedicineBaltimoreUnited States
| |
Collapse
|
9
|
Fu R, Wellman K, Baldwin A, Rege J, Walters K, Hirsekorn A, Riemondy K, Rainey WE, Mukherjee N. RNA-binding proteins regulate aldosterone homeostasis in human steroidogenic cells. RNA (NEW YORK, N.Y.) 2021; 27:rna.078727.121. [PMID: 34074709 PMCID: PMC8284322 DOI: 10.1261/rna.078727.121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 05/20/2021] [Indexed: 06/12/2023]
Abstract
Angiotensin II (AngII) stimulates adrenocortical cells to produce aldosterone, a master regulator of blood pressure. Despite extensive characterization of the transcriptional and enzymatic control of adrenocortical steroidogenesis, there are still major gaps in the precise regulation of AII-induced gene expression kinetics. Specifically, we do not know the regulatory contribution of RNA-binding proteins (RBPs) and RNA decay, which can control the timing of stimulus-induced gene expression. To investigate this question, we performed a high-resolution RNA-seq time course of the AngII stimulation response and 4-thiouridine pulse labeling in a steroidogenic human cell line (H295R). We identified twelve temporally distinct gene expression responses that contained mRNA encoding proteins known to be important for various steps of aldosterone production, such as cAMP signaling components and steroidogenic enzymes. AngII response kinetics for many of these mRNAs revealed a coordinated increase in both synthesis and decay. These findings were validated in primary human adrenocortical cells stimulated ex vivo with AngII. Using a candidate screen, we identified a subset of RNA-binding protein and RNA decay factors that activate or repress AngII-stimulated aldosterone production. Among the repressors of aldosterone were BTG2, which promotes deadenylation and global RNA decay. BTG2 was induced in response to AngII stimulation and promoted the repression of mRNAs encoding pro-steroidogenic factors indicating the existence of an incoherent feedforward loop controlling aldosterone homeostasis. These data support a model in which coordinated increases in transcription and decay facilitate the major transcriptomic changes required to implement a pro-steroidogenic expression program that actively resolved to prevent aldosterone overproduction.
Collapse
Affiliation(s)
- Rui Fu
- University of Colorado Denver School of Medicine
| | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Knockdown of Long Noncoding RNA SNHG14 Protects H9c2 Cells Against Hypoxia-induced Injury by Modulating miR-25-3p/KLF4 Axis in Vitro. J Cardiovasc Pharmacol 2021; 77:334-342. [PMID: 33278191 DOI: 10.1097/fjc.0000000000000965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 11/05/2020] [Indexed: 11/25/2022]
Abstract
ABSTRACT Cyanotic congenital heart disease (CCHD) is the main cause of death in infants worldwide. Long noncoding RNAs (lncRNAs) have been pointed to exert crucial roles in development of CHD. The current research is designed to illuminate the impact and potential mechanism of lncRNA SNHG14 in CCHD in vitro. The embryonic rat ventricular myocardial cells (H9c2 cells) were exposed to hypoxia to establish the model of CCHD in vitro. Quantitative real-time polymerase chain reaction was conducted to examine relative expressions of SNHG14, miR-25-3p, and KLF4. Cell viability was determined by the MTT assay. Lactate dehydrogenase (LDH) was measured by an LDH assay kit. Apoptosis-related proteins (Bax and Bcl-2) and KLF4 were detected by Western Blot. The targets of SNHG14 and miR-25-3p were verified by the dual-luciferase reporter assay. SNHG14 and KLF4 were upregulated, whereas miR-25-3p was downregulated in hypoxia-induced H9c2 cells and cardiac tissues of patients with CCHD compared with their controls. Knockdown of SNHG14 or overexpression of miR-25-3p facilitated cell viability, while depressing cell apoptosis and release of LDH in hypoxia-induced H9c2 cells. MiR-25-3p was a target of SNHG14 and inversely modulated by SNHG14. MiR-25-3p could directly target KLF4 and negatively regulate expression of KLF4. Repression of miR-25-3p or overexpression of KLF4 reversed the suppression impacts of sh-SNHG14 on cell apoptosis and release of LDH as well as the promotion impact of sh-SNHG14 on cell viability in hypoxia-induced H9c2 cells. Sh-SNHG14 protected H9c2 cells against hypoxia-induced injury by modulating miR-25-3p/KLF4 axis in vitro.
Collapse
|
11
|
Chen CY, Lee DS, Choong OK, Chang SK, Hsu T, Nicholson MW, Liu LW, Lin PJ, Ruan SC, Lin SW, Hu CY, Hsieh PCH. Cardiac-specific microRNA-125b deficiency induces perinatal death and cardiac hypertrophy. Sci Rep 2021; 11:2377. [PMID: 33504864 PMCID: PMC7840921 DOI: 10.1038/s41598-021-81700-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 01/05/2021] [Indexed: 01/30/2023] Open
Abstract
MicroRNA-125b, the first microRNA to be identified, is known to promote cardiomyocyte maturation from embryonic stem cells; however, its physiological role remains unclear. To investigate the role of miR-125b in cardiovascular biology, cardiac-specific miR-125b-1 knockout mice were generated. We found that cardiac-specific miR-125b-1 knockout mice displayed half the miR-125b expression of control mice resulting in a 60% perinatal death rate. However, the surviving mice developed hearts with cardiac hypertrophy. The cardiomyocytes in both neonatal and adult mice displayed abnormal mitochondrial morphology. In the deficient neonatal hearts, there was an increase in mitochondrial DNA, but total ATP production was reduced. In addition, both the respiratory complex proteins in mitochondria and mitochondrial transcription machinery were impaired. Mechanistically, using transcriptome and proteome analysis, we found that many proteins involved in fatty acid metabolism were significantly downregulated in miR-125b knockout mice which resulted in reduced fatty acid metabolism. Importantly, many of these proteins are expressed in the mitochondria. We conclude that miR-125b deficiency causes a high mortality rate in neonates and cardiac hypertrophy in adult mice. The dysregulation of fatty acid metabolism may be responsible for the cardiac defect in the miR-125b deficient mice.
Collapse
Affiliation(s)
- Chen-Yun Chen
- grid.19188.390000 0004 0546 0241Cardiovascular Division, Institute of Biomedical Science, Academia Sinica, National Taiwan University College of Medicine, 128 Academia Road, Sec. 2, Nankang, Taipei, 115 Taiwan ,grid.37589.300000 0004 0532 3167Department of Biomedical Sciences and Engineering, National Central University, Taoyuan, 320 Taiwan
| | - Desy S. Lee
- grid.19188.390000 0004 0546 0241Cardiovascular Division, Institute of Biomedical Science, Academia Sinica, National Taiwan University College of Medicine, 128 Academia Road, Sec. 2, Nankang, Taipei, 115 Taiwan
| | - Oi Kuan Choong
- grid.19188.390000 0004 0546 0241Cardiovascular Division, Institute of Biomedical Science, Academia Sinica, National Taiwan University College of Medicine, 128 Academia Road, Sec. 2, Nankang, Taipei, 115 Taiwan
| | - Sheng-Kai Chang
- grid.19188.390000 0004 0546 0241Department of Clinical Laboratory Sciences and Medical Biotechnology, College of Medicine, National Taiwan University, Taipei, 100 Taiwan
| | - Tien Hsu
- grid.37589.300000 0004 0532 3167Department of Biomedical Sciences and Engineering, National Central University, Taoyuan, 320 Taiwan
| | - Martin W. Nicholson
- grid.19188.390000 0004 0546 0241Cardiovascular Division, Institute of Biomedical Science, Academia Sinica, National Taiwan University College of Medicine, 128 Academia Road, Sec. 2, Nankang, Taipei, 115 Taiwan
| | - Li-Wei Liu
- grid.19188.390000 0004 0546 0241Cardiovascular Division, Institute of Biomedical Science, Academia Sinica, National Taiwan University College of Medicine, 128 Academia Road, Sec. 2, Nankang, Taipei, 115 Taiwan
| | - Po-Ju Lin
- grid.19188.390000 0004 0546 0241Cardiovascular Division, Institute of Biomedical Science, Academia Sinica, National Taiwan University College of Medicine, 128 Academia Road, Sec. 2, Nankang, Taipei, 115 Taiwan
| | - Shu-Chian Ruan
- grid.19188.390000 0004 0546 0241Cardiovascular Division, Institute of Biomedical Science, Academia Sinica, National Taiwan University College of Medicine, 128 Academia Road, Sec. 2, Nankang, Taipei, 115 Taiwan
| | - Shu-Wha Lin
- grid.19188.390000 0004 0546 0241Department of Clinical Laboratory Sciences and Medical Biotechnology, College of Medicine, National Taiwan University, Taipei, 100 Taiwan
| | - Chung-Yi Hu
- grid.19188.390000 0004 0546 0241Department of Clinical Laboratory Sciences and Medical Biotechnology, College of Medicine, National Taiwan University, Taipei, 100 Taiwan
| | - Patrick C. H. Hsieh
- grid.19188.390000 0004 0546 0241Cardiovascular Division, Institute of Biomedical Science, Academia Sinica, National Taiwan University College of Medicine, 128 Academia Road, Sec. 2, Nankang, Taipei, 115 Taiwan ,grid.19188.390000 0004 0546 0241Institute of Medical Genomics and Proteomics, National Taiwan University College of Medicine, Taipei, 100 Taiwan ,grid.19188.390000 0004 0546 0241Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, 100 Taiwan
| |
Collapse
|
12
|
Kohama Y, Higo S, Masumura Y, Shiba M, Kondo T, Ishizu T, Higo T, Nakamura S, Kameda S, Tabata T, Inoue H, Motooka D, Okuzaki D, Takashima S, Miyagawa S, Sawa Y, Hikoso S, Sakata Y. Adeno-associated virus-mediated gene delivery promotes S-phase entry-independent precise targeted integration in cardiomyocytes. Sci Rep 2020; 10:15348. [PMID: 32948788 PMCID: PMC7501291 DOI: 10.1038/s41598-020-72216-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 08/28/2020] [Indexed: 02/06/2023] Open
Abstract
Post-mitotic cardiomyocytes have been considered to be non-permissive to precise targeted integration including homology-directed repair (HDR) after CRISPR/Cas9 genome editing. Here, we demonstrate that direct delivery of large amounts of transgene encoding guide RNA (gRNA) and repair template DNA via intra-ventricular injection of adeno-associated virus (AAV) promotes precise targeted genome replacement in adult murine cardiomyocytes expressing Cas9. Neither systemic injection of AAV nor direct injection of adenovirus promotes targeted integration, suggesting that high copy numbers of single-stranded transgenes are required in cardiomyocytes. Notably, AAV-mediated targeted integration in cardiomyocytes both in vitro and in vivo depends on the Fanconi anemia pathway, a key component of the single-strand template repair mechanism. In human cardiomyocytes differentiated from induced pluripotent stem cells, AAV-mediated targeted integration fluorescently labeled Mlc2v protein after differentiation, independently of DNA synthesis, and enabled real-time detection of sarcomere contraction in monolayered beating cardiomyocytes. Our findings provide a wide range of applications for targeted genome replacement in non-dividing cardiomyocytes.
Collapse
Affiliation(s)
- Yasuaki Kohama
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Shuichiro Higo
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
- Department of Medical Therapeutics for Heart Failure, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan.
| | - Yuki Masumura
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Mikio Shiba
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Takumi Kondo
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Takamaru Ishizu
- Higashiosaka City Medical Center, Higashiosaka, Osaka, 578-8588, Japan
| | - Tomoaki Higo
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Satoki Nakamura
- Department of Medical Therapeutics for Heart Failure, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
- Department of Medical Biochemistry, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Satoshi Kameda
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Tomoka Tabata
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Hiroyuki Inoue
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Daisuke Motooka
- Genome Information Research Center, Research Institute for Microbial Diseases, Osaka University, Suita, 565-0871, Japan
| | - Daisuke Okuzaki
- Genome Information Research Center, Research Institute for Microbial Diseases, Osaka University, Suita, 565-0871, Japan
| | - Seiji Takashima
- Department of Medical Biochemistry, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Shigeru Miyagawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Yoshiki Sawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Shungo Hikoso
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Yasushi Sakata
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| |
Collapse
|
13
|
Ritterhoff J, Young S, Villet O, Shao D, Neto FC, Bettcher LF, Hsu YWA, Kolwicz SC, Raftery D, Tian R. Metabolic Remodeling Promotes Cardiac Hypertrophy by Directing Glucose to Aspartate Biosynthesis. Circ Res 2020; 126:182-196. [PMID: 31709908 PMCID: PMC8448129 DOI: 10.1161/circresaha.119.315483] [Citation(s) in RCA: 131] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
RATIONALE Hypertrophied hearts switch from mainly using fatty acids (FAs) to an increased reliance on glucose for energy production. It has been shown that preserving FA oxidation (FAO) prevents the pathological shift of substrate preference, preserves cardiac function and energetics, and reduces cardiomyocyte hypertrophy during cardiac stresses. However, it remains elusive whether substrate metabolism regulates cardiomyocyte hypertrophy directly or via a secondary effect of improving cardiac energetics. OBJECTIVE The goal of this study was to determine the mechanisms of how preservation of FAO prevents the hypertrophic growth of cardiomyocytes. METHODS AND RESULTS We cultured adult rat cardiomyocytes in a medium containing glucose and mixed-chain FAs and induced pathological hypertrophy by phenylephrine. Phenylephrine-induced hypertrophy was associated with increased glucose consumption and higher intracellular aspartate levels, resulting in increased synthesis of nucleotides, RNA, and proteins. These changes could be prevented by increasing FAO via deletion of ACC2 (acetyl-CoA-carboxylase 2) in phenylephrine-stimulated cardiomyocytes and in pressure overload-induced cardiac hypertrophy in vivo. Furthermore, aspartate supplementation was sufficient to reverse the antihypertrophic effect of ACC2 deletion demonstrating a causal role of elevated aspartate level in cardiomyocyte hypertrophy. 15N and 13C stable isotope tracing revealed that glucose but not glutamine contributed to increased biosynthesis of aspartate, which supplied nitrogen for nucleotide synthesis during cardiomyocyte hypertrophy. CONCLUSIONS Our data show that increased glucose consumption is required to support aspartate synthesis that drives the increase of biomass during cardiac hypertrophy. Preservation of FAO prevents the shift of metabolic flux into the anabolic pathway and maintains catabolic metabolism for energy production, thus preventing cardiac hypertrophy and improving myocardial energetics.
Collapse
Affiliation(s)
- Julia Ritterhoff
- From the Department of Anesthesiology and Pain Medicine (J.R., S.Y., O.V., D.S., Y.-W.A.H., S.C.K., R.T.), Mitochondria and Metabolism Center, University of Washington, Seattle
| | - Sara Young
- From the Department of Anesthesiology and Pain Medicine (J.R., S.Y., O.V., D.S., Y.-W.A.H., S.C.K., R.T.), Mitochondria and Metabolism Center, University of Washington, Seattle
| | - Outi Villet
- From the Department of Anesthesiology and Pain Medicine (J.R., S.Y., O.V., D.S., Y.-W.A.H., S.C.K., R.T.), Mitochondria and Metabolism Center, University of Washington, Seattle
| | - Dan Shao
- From the Department of Anesthesiology and Pain Medicine (J.R., S.Y., O.V., D.S., Y.-W.A.H., S.C.K., R.T.), Mitochondria and Metabolism Center, University of Washington, Seattle
| | - F Carnevale Neto
- Department of Anesthesiology and Pain Medicine, Northwest Metabolomics Research Center (F.C.N., L.F.B., D.R.), Mitochondria and Metabolism Center, University of Washington, Seattle
| | - Lisa F Bettcher
- Department of Anesthesiology and Pain Medicine, Northwest Metabolomics Research Center (F.C.N., L.F.B., D.R.), Mitochondria and Metabolism Center, University of Washington, Seattle
| | - Yun-Wei A Hsu
- From the Department of Anesthesiology and Pain Medicine (J.R., S.Y., O.V., D.S., Y.-W.A.H., S.C.K., R.T.), Mitochondria and Metabolism Center, University of Washington, Seattle
| | - Stephen C Kolwicz
- From the Department of Anesthesiology and Pain Medicine (J.R., S.Y., O.V., D.S., Y.-W.A.H., S.C.K., R.T.), Mitochondria and Metabolism Center, University of Washington, Seattle
| | - Daniel Raftery
- Department of Anesthesiology and Pain Medicine, Northwest Metabolomics Research Center (F.C.N., L.F.B., D.R.), Mitochondria and Metabolism Center, University of Washington, Seattle
| | - Rong Tian
- From the Department of Anesthesiology and Pain Medicine (J.R., S.Y., O.V., D.S., Y.-W.A.H., S.C.K., R.T.), Mitochondria and Metabolism Center, University of Washington, Seattle
| |
Collapse
|
14
|
Raggi F, Cangelosi D, Becherini P, Blengio F, Morini M, Acquaviva M, Belli ML, Panizzon G, Cervo G, Varesio L, Eva A, Bosco MC. Transcriptome analysis defines myocardium gene signatures in children with ToF and ASD and reveals disease-specific molecular reprogramming in response to surgery with cardiopulmonary bypass. J Transl Med 2020; 18:21. [PMID: 31924244 PMCID: PMC6954611 DOI: 10.1186/s12967-020-02210-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Accepted: 01/03/2020] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Tetralogy of Fallot (ToF) and Atrial Septal Defects (ASD) are the most common types of congenital heart diseases and a major cause of childhood morbidity and mortality. Cardiopulmonary bypass (CPB) is used during corrective cardiac surgery to support circulation and heart stabilization. However, this procedure triggers systemic inflammatory and stress response and consequent increased risk of postoperative complications. The aim of this study was to define the molecular bases of ToF and ASD pathogenesis and response to CPB and identify new potential biomarkers. METHODS Comparative transcriptome analysis of right atrium specimens collected from 10 ToF and 10 ASD patients was conducted before (Pre-CPB) and after (Post-CPB) corrective surgery. Total RNA isolated from each sample was individually hybridized on Affymetrix HG-U133 Plus Array Strips containing 38,500 unique human genes. Differences in the gene expression profiles and functional enrichment/network analyses were assessed using bioinformatic tools. qRT-PCR analysis was used to validate gene modulation. RESULTS Pre-CPB samples showed significant differential expression of a total of 72 genes, 28 of which were overexpressed in ToF and 44 in ASD. According to Gene Ontology annotation, the mostly enriched biological processes were represented by matrix organization and cell adhesion in ToF and by muscle development and contractility in ASD specimens. GSEA highlighted the specific enrichment of hypoxia gene sets in ToF samples, pointing to a role for hypoxia in disease pathogenesis. The post-CPB myocardium exhibited significant alterations in the expression profile of genes related to transcription regulation, growth/apoptosis, inflammation, adhesion/matrix organization, and oxidative stress. Among them, only 70 were common to the two disease groups, whereas 110 and 24 were unique in ToF and ASD, respectively. Multiple functional interactions among differentially expressed gene products were predicted by network analysis. Interestingly, gene expression changes in ASD samples followed a consensus hypoxia profile. CONCLUSION Our results provide a comprehensive view of gene reprogramming in right atrium tissues of ToF and ASD patients before and after CPB, defining specific molecular pathways underlying disease pathophysiology and myocardium response to CPB. These findings have potential translational value because they identify new candidate prognostic markers and targets for tailored cardioprotective post-surgical therapies.
Collapse
Affiliation(s)
- Federica Raggi
- Laboratory of Molecular Biology, IRCSS Istituto Giannina Gaslini, Padiglione 2, L.go G.Gaslini 5, 16147, Genova, Italy
| | - Davide Cangelosi
- Laboratory of Molecular Biology, IRCSS Istituto Giannina Gaslini, Padiglione 2, L.go G.Gaslini 5, 16147, Genova, Italy
| | - Pamela Becherini
- Laboratory of Molecular Biology, IRCSS Istituto Giannina Gaslini, Padiglione 2, L.go G.Gaslini 5, 16147, Genova, Italy.,Department of Internal Medicine, University of Genova, Genova, Italy
| | - Fabiola Blengio
- Laboratory of Molecular Biology, IRCSS Istituto Giannina Gaslini, Padiglione 2, L.go G.Gaslini 5, 16147, Genova, Italy.,INSERM U955 Equipe 16, Creteil, France
| | - Martina Morini
- Laboratory of Molecular Biology, IRCSS Istituto Giannina Gaslini, Padiglione 2, L.go G.Gaslini 5, 16147, Genova, Italy
| | - Massimo Acquaviva
- Laboratory of Molecular Biology, IRCSS Istituto Giannina Gaslini, Padiglione 2, L.go G.Gaslini 5, 16147, Genova, Italy.,Immunobiology of Neurological Disorders Unit, Institute of Experimental Neurology INSPE, Ospedale San Raffaele, Milano, Italy
| | - Maria Luisa Belli
- Laboratory of Molecular Biology, IRCSS Istituto Giannina Gaslini, Padiglione 2, L.go G.Gaslini 5, 16147, Genova, Italy.,Cytomorphology Laboratory, Heamo-Onco-TMO Department, IRCSS Istituto Giannina Gaslini, Genova, Italy
| | - Giuseppe Panizzon
- Department of Cardiology, IRCSS Istituto Giannina Gaslini, Genova, Italy
| | - Giuseppe Cervo
- Department of Cardiology, IRCSS Istituto Giannina Gaslini, Genova, Italy
| | - Luigi Varesio
- Laboratory of Molecular Biology, IRCSS Istituto Giannina Gaslini, Padiglione 2, L.go G.Gaslini 5, 16147, Genova, Italy
| | - Alessandra Eva
- Laboratory of Molecular Biology, IRCSS Istituto Giannina Gaslini, Padiglione 2, L.go G.Gaslini 5, 16147, Genova, Italy
| | - Maria Carla Bosco
- Laboratory of Molecular Biology, IRCSS Istituto Giannina Gaslini, Padiglione 2, L.go G.Gaslini 5, 16147, Genova, Italy.
| |
Collapse
|
15
|
Satoh M, Nomura S, Harada M, Yamaguchi T, Ko T, Sumida T, Toko H, Naito AT, Takeda N, Tobita T, Fujita T, Ito M, Fujita K, Ishizuka M, Kariya T, Akazawa H, Kobayashi Y, Morita H, Takimoto E, Aburatani H, Komuro I. High-throughput single-molecule RNA imaging analysis reveals heterogeneous responses of cardiomyocytes to hemodynamic overload. J Mol Cell Cardiol 2019; 128:77-89. [PMID: 30611794 DOI: 10.1016/j.yjmcc.2018.12.018] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 12/10/2018] [Accepted: 12/30/2018] [Indexed: 12/24/2022]
Abstract
BACKGROUND The heart responds to hemodynamic overload through cardiac hypertrophy and activation of the fetal gene program. However, these changes have not been thoroughly examined in individual cardiomyocytes, and the relation between cardiomyocyte size and fetal gene expression remains elusive. We established a method of high-throughput single-molecule RNA imaging analysis of in vivo cardiomyocytes and determined spatial and temporal changes during the development of heart failure. METHODS AND RESULTS We applied three novel single-cell analysis methods, namely, single-cell quantitative PCR (sc-qPCR), single-cell RNA sequencing (scRNA-seq), and single-molecule fluorescence in situ hybridization (smFISH). Isolated cardiomyocytes and cross sections from pressure overloaded murine hearts after transverse aortic constriction (TAC) were analyzed at an early hypertrophy stage (2 weeks, TAC2W) and at a late heart failure stage (8 weeks, TAC8W). Expression of myosin heavy chain β (Myh7), a representative fetal gene, was induced in some cardiomyocytes in TAC2W hearts and in more cardiomyocytes in TAC8W hearts. Expression levels of Myh7 varied considerably among cardiomyocytes. Myh7-expressing cardiomyocytes were significantly more abundant in the middle layer, compared with the inner or outer layers of TAC2W hearts, while such spatial differences were not observed in TAC8W hearts. Expression levels of Myh7 were inversely correlated with cardiomyocyte size and expression levels of mitochondria-related genes. CONCLUSIONS We developed a new image-analysis pipeline to allow automated and unbiased quantification of gene expression at the single-cell level and determined the spatial and temporal regulation of heterogenous Myh7 expression in cardiomyocytes after pressure overload.
Collapse
Affiliation(s)
- Masahiro Satoh
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, Chiba, Japan; Genome Science Division, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan
| | - Seitaro Nomura
- Genome Science Division, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan; Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Mutsuo Harada
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Toshihiro Yamaguchi
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Toshiyuki Ko
- Genome Science Division, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan; Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Tomokazu Sumida
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Haruhiro Toko
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Atsuhiko T Naito
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Norifumi Takeda
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Takashige Tobita
- Genome Science Division, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan; Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Takanori Fujita
- Genome Science Division, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan
| | - Masamichi Ito
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Kanna Fujita
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Masato Ishizuka
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Taro Kariya
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hiroshi Akazawa
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yoshio Kobayashi
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Hiroyuki Morita
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Eiki Takimoto
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hiroyuki Aburatani
- Genome Science Division, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan.
| | - Issei Komuro
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
| |
Collapse
|
16
|
Lewandowski J, Rozwadowska N, Kolanowski TJ, Malcher A, Zimna A, Rugowska A, Fiedorowicz K, Łabędź W, Kubaszewski Ł, Chojnacka K, Bednarek-Rajewska K, Majewski P, Kurpisz M. The impact of in vitro cell culture duration on the maturation of human cardiomyocytes derived from induced pluripotent stem cells of myogenic origin. Cell Transplant 2018; 27:1047-1067. [PMID: 29947252 PMCID: PMC6158549 DOI: 10.1177/0963689718779346] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Ischemic heart disease, also known as coronary artery disease (CAD), poses a challenge
for regenerative medicine. iPSC technology might lead to a breakthrough due to the
possibility of directed cell differentiation delivering a new powerful source of human
autologous cardiomyocytes. One of the factors supporting proper cell maturation is in
vitro culture duration. In this study, primary human skeletal muscle myoblasts were
selected as a myogenic cell type reservoir for genetic iPSC reprogramming. Skeletal muscle
myoblasts have similar ontogeny embryogenetic pathways (myoblasts vs. cardiomyocytes), and
thus, a greater chance of myocardial development might be expected, with maintenance of
acquired myogenic cardiac cell characteristics, from the differentiation process when
iPSCs of myoblastoid origin are obtained. Analyses of cell morphological and structural
changes, gene expression (cardiac markers), and functional tests (intracellular calcium
transients) performed at two in vitro culture time points spanning the early stages of
cardiac development (day 20 versus 40 of cell in vitro culture) confirmed the ability of
the obtained myogenic cells to acquire adult features of differentiated cardiomyocytes.
Prolonged 40-day iPSC-derived cardiomyocytes (iPSC-CMs) revealed progressive cellular
hypertrophy; a better-developed contractile apparatus; expression of marker genes similar
to human myocardial ventricular cells, including a statistically significant
CX43 increase, an MHC isoform switch, and a troponin I isoform
transition; more efficient intercellular calcium handling; and a stronger response to
β-adrenergic stimulation.
Collapse
Affiliation(s)
- Jarosław Lewandowski
- 1 Institute of Human Genetics, Polish Academy of Sciences, Strzeszynska, Poznan, Poland
| | - Natalia Rozwadowska
- 1 Institute of Human Genetics, Polish Academy of Sciences, Strzeszynska, Poznan, Poland
| | - Tomasz J Kolanowski
- 1 Institute of Human Genetics, Polish Academy of Sciences, Strzeszynska, Poznan, Poland
| | - Agnieszka Malcher
- 1 Institute of Human Genetics, Polish Academy of Sciences, Strzeszynska, Poznan, Poland
| | - Agnieszka Zimna
- 1 Institute of Human Genetics, Polish Academy of Sciences, Strzeszynska, Poznan, Poland
| | - Anna Rugowska
- 1 Institute of Human Genetics, Polish Academy of Sciences, Strzeszynska, Poznan, Poland
| | - Katarzyna Fiedorowicz
- 1 Institute of Human Genetics, Polish Academy of Sciences, Strzeszynska, Poznan, Poland
| | - Wojciech Łabędź
- 2 Department of Orthopaedics and Traumatology, W. Dega University Hospital, Poznan University of Medical Sciences, Poznan, Poland.,3 Department of Spondyloorthopaedics and Biomechanics of the Spine, W. Dega University Hospital, Poznan University of Medical Sciences, Poznan, Poland
| | - Łukasz Kubaszewski
- 2 Department of Orthopaedics and Traumatology, W. Dega University Hospital, Poznan University of Medical Sciences, Poznan, Poland.,3 Department of Spondyloorthopaedics and Biomechanics of the Spine, W. Dega University Hospital, Poznan University of Medical Sciences, Poznan, Poland
| | - Katarzyna Chojnacka
- 4 Department of Clinical Pathology, Heliodor Swiecicki Clinical Hospital No. 2 of the Poznan University of Medical Sciences, Poznan, Poland
| | | | - Przemysław Majewski
- 5 Department of Clinical Pathology, Poznan University of Medical Sciences, Poznan, Poland
| | - Maciej Kurpisz
- 1 Institute of Human Genetics, Polish Academy of Sciences, Strzeszynska, Poznan, Poland
| |
Collapse
|
17
|
Ishizu T, Higo S, Masumura Y, Kohama Y, Shiba M, Higo T, Shibamoto M, Nakagawa A, Morimoto S, Takashima S, Hikoso S, Sakata Y. Targeted Genome Replacement via Homology-directed Repair in Non-dividing Cardiomyocytes. Sci Rep 2017; 7:9363. [PMID: 28839205 PMCID: PMC5571012 DOI: 10.1038/s41598-017-09716-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Accepted: 07/28/2017] [Indexed: 01/06/2023] Open
Abstract
Although high-throughput sequencing can elucidate the genetic basis of hereditary cardiomyopathy, direct interventions targeting pathological mutations have not been established. Furthermore, it remains uncertain whether homology-directed repair (HDR) is effective in non-dividing cardiomyocytes. Here, we demonstrate that HDR-mediated genome editing using CRISPR/Cas9 is effective in non-dividing cardiomyocytes. Transduction of adeno-associated virus (AAV) containing sgRNA and repair template into cardiomyocytes constitutively expressing Cas9 efficiently introduced a fluorescent protein to the C-terminus of Myl2. Imaging-based sequential evaluation of endogenously tagged protein revealed that HDR occurs in cardiomyocytes, independently of DNA synthesis. We sought to repair a pathological mutation in Tnnt2 in cardiomyocytes of cardiomyopathy model mice. An sgRNA that avoided the mutated exon minimized deleterious effects on Tnnt2 expression, and AAV-mediated HDR achieved precise genome correction at a frequency of ~12.5%. Thus, targeted genome replacement via HDR is effective in non-dividing cardiomyocytes, and represents a potential therapeutic tool for targeting intractable cardiomyopathy.
Collapse
Affiliation(s)
- Takamaru Ishizu
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Shuichiro Higo
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan.
| | - Yuki Masumura
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Yasuaki Kohama
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Mikio Shiba
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Tomoaki Higo
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Masato Shibamoto
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Akito Nakagawa
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Sachio Morimoto
- Department of Health and Medical Care, International University of Health and Welfare, Okawa, Fukuoka, 831-8501, Japan
| | - Seiji Takashima
- Department of Medical Biochemistry, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Shungo Hikoso
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan.,Department of Medical Therapeutics for Heart Failure, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Yasushi Sakata
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| |
Collapse
|