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Miyagawa S, Kawamura T, Ito E, Takeda M, Iseoka H, Yokoyama J, Harada A, Mochizuki-Oda N, Imanishi-Ochi Y, Li J, Sasai M, Kitaoka F, Nomura M, Amano N, Takahashi T, Dohi H, Morii E, Sawa Y. Pre-clinical evaluation of the efficacy and safety of human induced pluripotent stem cell-derived cardiomyocyte patch. Stem Cell Res Ther 2024; 15:73. [PMID: 38475911 DOI: 10.1186/s13287-024-03690-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 02/28/2024] [Indexed: 03/14/2024] Open
Abstract
BACKGROUND Cell- or tissue-based regenerative therapy is an attractive approach to treat heart failure. A tissue patch that can safely and effectively repair damaged heart muscle would greatly improve outcomes for patients with heart failure. In this study, we conducted a preclinical proof-of-concept analysis of the efficacy and safety of clinical-grade human induced pluripotent stem cell-derived cardiomyocyte (hiPSC-CM) patches. METHODS A clinical-grade hiPSC line was established using peripheral blood mononuclear cells from a healthy volunteer that was homozygous for human leukocyte antigens. The hiPSCs were differentiated into cardiomyocytes. The obtained hiPSC-CMs were cultured on temperature-responsive culture dishes for patch fabrication. The cellular characteristics, safety, and efficacy of hiPSCs, hiPSC-CMs, and hiPSC-CM patches were analyzed. RESULTS The hiPSC-CMs expressed cardiomyocyte-specific genes and proteins, and electrophysiological analyses revealed that hiPSC-CMs exhibit similar properties to human primary myocardial cells. In vitro and in vivo safety studies indicated that tumorigenic cells were absent. Moreover, whole-genome and exome sequencing revealed no genomic mutations. General toxicity tests also showed no adverse events posttransplantation. A porcine model of myocardial infarction demonstrated significantly improved cardiac function and angiogenesis in response to cytokine secretion from hiPSC-CM patches. No lethal arrhythmias were observed. CONCLUSIONS hiPSC-CM patches are promising for future translational research and may have clinical application potential for the treatment of heart failure.
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Affiliation(s)
- Shigeru Miyagawa
- Department of Cardiovascular Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan.
| | - Takuji Kawamura
- Department of Cardiovascular Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Emiko Ito
- Department of Cardiovascular Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Maki Takeda
- Department of Cardiovascular Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Hiroko Iseoka
- Department of Cardiovascular Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Junya Yokoyama
- Department of Cardiovascular Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Akima Harada
- Department of Cardiovascular Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Noriko Mochizuki-Oda
- Department of Cardiovascular Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Yukiko Imanishi-Ochi
- Department of Cardiovascular Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Junjun Li
- Department of Cardiovascular Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Masao Sasai
- Department of Cardiovascular Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Fumiyo Kitaoka
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, 606-8507, Japan
| | - Masaki Nomura
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, 606-8507, Japan
| | - Naoki Amano
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, 606-8507, Japan
| | - Tomoko Takahashi
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, 606-8507, Japan
- Department of Environmental Preventive Medicine (Yamada Bee Company, Inc.), Center for Preventive Medical Sciences, Chiba University, Chiba, 263-8522, Japan
| | - Hiromi Dohi
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, 606-8507, Japan
| | - Eiichi Morii
- Department of Histopathology, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Yoshiki Sawa
- Department of Cardiovascular Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
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Hasegawa M, Miki K, Kawamura T, Takei Sasozaki I, Higashiyama Y, Tsuchida M, Kashino K, Taira M, Ito E, Takeda M, Ishida H, Higo S, Sakata Y, Miyagawa S. Gene correction and overexpression of TNNI3 improve impaired relaxation in engineered heart tissue model of pediatric restrictive cardiomyopathy. Dev Growth Differ 2024; 66:119-132. [PMID: 38193576 DOI: 10.1111/dgd.12909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 12/20/2023] [Accepted: 12/24/2023] [Indexed: 01/10/2024]
Abstract
Research on cardiomyopathy models using engineered heart tissue (EHT) created from disease-specific induced pluripotent stem cells (iPSCs) is advancing rapidly. However, the study of restrictive cardiomyopathy (RCM), a rare and intractable cardiomyopathy, remains at the experimental stage because there is currently no established method to replicate the hallmark phenotype of RCM, particularly diastolic dysfunction, in vitro. In this study, we generated iPSCs from a patient with early childhood-onset RCM harboring the TNNI3 R170W mutation (R170W-iPSCs). The properties of R170W-iPSC-derived cardiomyocytes (CMs) and EHTs were evaluated and compared with an isogenic iPSC line in which the mutation was corrected. Our results indicated altered calcium kinetics in R170W-iPSC-CMs, including prolonged tau, and an increased ratio of relaxation force to contractile force in R170W-EHTs. These properties were reversed in the isogenic line, suggesting that our model recapitulates impaired relaxation of RCM, i.e., diastolic dysfunction in clinical practice. Furthermore, overexpression of wild-type TNNI3 in R170W-iPSC-CMs and -EHTs effectively rescued impaired relaxation. These results highlight the potential efficacy of EHT, a modality that can accurately recapitulate diastolic dysfunction in vitro, to elucidate the pathophysiology of RCM, as well as the possible benefits of gene therapies for patients with RCM.
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Affiliation(s)
- Moyu Hasegawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Kenji Miki
- Premium Research Institute for Human Metaverse Medicine, Osaka University, Osaka, Japan
| | - Takuji Kawamura
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Ikue Takei Sasozaki
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yuki Higashiyama
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Masaru Tsuchida
- NTT Communication Science Laboratories, Media Information Research Department, Kanagawa, Japan
| | - Kunio Kashino
- Premium Research Institute for Human Metaverse Medicine, Osaka University, Osaka, Japan
- NTT Communication Science Laboratories, Media Information Research Department, Kanagawa, Japan
| | - Masaki Taira
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Emiko Ito
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Maki Takeda
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Hidekazu Ishida
- Department of Pediatrics, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Shuichiro Higo
- Department of Medical Therapeutics for Heart Failure, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yasushi Sakata
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Shigeru Miyagawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
- Premium Research Institute for Human Metaverse Medicine, Osaka University, Osaka, Japan
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3
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Tominaga Y, Kawamura T, Ito E, Takeda M, Harada A, Torigata K, Sakaniwa R, Sawa Y, Miyagawa S. Pleiotropic effects of extracellular vesicles from induced pluripotent stem cell-derived cardiomyocytes on ischemic cardiomyopathy: A preclinical study. J Heart Lung Transplant 2024; 43:85-99. [PMID: 37611882 DOI: 10.1016/j.healun.2023.08.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 07/29/2023] [Accepted: 08/16/2023] [Indexed: 08/25/2023] Open
Abstract
BACKGROUND Stem cell-secreted extracellular vesicles (EVs) play essential roles in intercellular communication and restore cardiac function in animal models of ischemic heart disease. However, few studies have used EVs derived from clinical-grade stem cells and their derivatives with stable quality. Moreover, there is little information on the mechanism and time course of the multifactorial effect of EV therapy from the acute to the chronic phase, the affected cells, and whether the effects are direct or indirect. METHODS Induced pluripotent stem cell-derived cardiomyocytes (iPSCM) were produced using a clinical-grade differentiation induction system. EVs were isolated from the conditioned medium by ultracentrifugation and characterized in silico, in vitro, and in vivo. A rat model of myocardial infarction was established by left anterior descending artery ligation and treated with iPSCM-derived EVs. RESULTS iPSCM-derived EVs contained microRNAs and proteins associated with angiogenesis, antifibrosis, promotion of M2 macrophage polarization, cell proliferation, and antiapoptosis. iPSCM-derived EV treatment improved left ventricular function and reduced mortality in the rat model by improving vascularization and suppressing fibrosis and chronic inflammation in the heart. EVs were uptaken by cardiomyocytes, endothelial cells, fibroblasts, and macrophages in the cardiac tissues. The pleiotropic effects occurred due to the direct effects of microRNAs and proteins encapsulated in EVs and indirect paracrine effects on M2 macrophages. CONCLUSIONS Clinical-grade iPSCM-derived EVs improve cardiac function by regulating various genes and pathways in various cell types and may have clinical potential for treating ischemic heart disease.
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Affiliation(s)
- Yuji Tominaga
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Takuji Kawamura
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Emiko Ito
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Maki Takeda
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Akima Harada
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Kosuke Torigata
- Department of Frontier Regenerative Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Ryoto Sakaniwa
- Public Health, Department of Social Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yoshiki Sawa
- Department of Future Medicine, Division of Health Science, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Shigeru Miyagawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Osaka, Japan.
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Wong P, Dhivagaran T, Cheung R, Ito E, Chan KY, So N, Keller H, Cheung F, Rubinstein E, Tsang RW. Socio-Economic Status in Risk of Acute Adverse Events Following Radiotherapy. Int J Radiat Oncol Biol Phys 2023; 117:e75. [PMID: 37786170 DOI: 10.1016/j.ijrobp.2023.06.812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Socio-economic status (SES) are known to influence cancer patient outcomes. The purpose of this study is to evaluate whether SES affected the short-term clinical experience of patients treated with radiotherapy (RT) during the pandemic. MATERIALS/METHODS This was a single institution, retrospective cohort quality improvement study. The primary endpoint consisted of adverse events (AEs) defined as an unplanned admission to a drop-in radiation-nursing clinic (RNC) or the institution's emergency department (ED) within 90 days of a radiation course. Adult cancer patients who received external beam RT from April 1, 2019, to March 31, 2022 were included. Patients were classified into two periods: treated prior to the pandemic (pre-COVID), and during the pandemic (COVID era), with a cutoff date of March 31, 2020. SES, age, RT intent (curative, palliative, SBRT), regimen (conventional fractionation and hypofractionation), disease site, and sex were included as co-variables. SES was obtained by matching a patient's postal code with a provincial data tool with four distinct dimensions: 1) residential instability, 2) material deprivation, 3) ethnic concentration, and 4) dependency. For each SES dimension, a score of 1-5 (best-worst) is assigned to individuals. A backward stepwise multivariable logistic regression analysis was performed to analyze the variables and identify the factors that were significantly associated (p<0.05) with increased risk of AEs. Institutional ethics review board exemption was obtained. RESULTS Across the 3-year period, 15715 patients (5499 pre-COVID and 10216 COVID era patients) were identified and included in the analyses, and 5756 AEs were observed. The analyses revealed that patient age (p<0.001), disease site (p<0.001), treatment intent (p<0.001) and treatment regimen (p = 0.005) were associated with the risk of developing AEs. AEs risk was correlated with the treatment period (pre-COVID vs. COVID era) (p<0.001) and material deprivation (p = 0.027). Adjusting for the other variables, patients who were least materially deprived were at lower risk (Odds Ratio (OR) = 0.88, 95% CI [0.78-0.98]) of developing AEs than patients who were most materially deprived. Patient sex (p>0.1), residential instability (p = 0.069), ethnic concentration (p>0.5) and dependency (p>0.5) were not associated with AEs risk. Patients with more (SES score 1-4 vs 5) residential instability (p<0.001; OR = 0.82, 95% CI [0.74-0.90]) and less (SES score 1 vs 2-5) material deprivations (p = 0.006; OR = 0.76, 95% CI [0.66-0.88]) were at reduced the risk of ED visits. SES was not associated with RNC visits. CONCLUSION In a universal health care system, SES (residential instability and material deprivation) were associated with the increased risk of ED within 90 days of RT. Proactive care and virtual monitoring during the 90-day period after RT in high-risk patients may reduce ED visits. ED visits beyond our tertiary institution are being gathered to address this study limitation.
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Affiliation(s)
- P Wong
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, ON, Canada
| | | | - R Cheung
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, ON, Canada
| | - E Ito
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, ON, Canada
| | - K Y Chan
- Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada
| | - N So
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, ON, Canada
| | - H Keller
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, ON, Canada
| | - F Cheung
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, ON, Canada
| | | | - R W Tsang
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, ON, Canada
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Kawamura T, Ito Y, Ito E, Takeda M, Mikami T, Taguchi T, Mochizuki-Oda N, Sasai M, Shimamoto T, Nitta Y, Yoshioka D, Kawamura M, Kawamura A, Misumi Y, Sakata Y, Sawa Y, Miyagawa S. Safety confirmation of induced pluripotent stem cell-derived cardiomyocyte patch transplantation for ischemic cardiomyopathy: first three case reports. Front Cardiovasc Med 2023; 10:1182209. [PMID: 37781295 PMCID: PMC10540447 DOI: 10.3389/fcvm.2023.1182209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 08/29/2023] [Indexed: 10/03/2023] Open
Abstract
Introduction With the expected increase in patients with heart failure and ischemic 15 cardiomyopathy, the development of myocardial regenerative medicine using cell transplantation as a novel treatment method is progressing. This first-in-human clinical trial aimed to confirm the safety of cardiomyocyte patch transplantation derived from allogeneic induced pluripotent stem (iPS) cells based on the results of several preclinical studies. Study design The inclusion criteria were left ventricular ejection fraction of 35% or less; heart failure symptoms of New York Heart Association class III or higher despite existing therapies such as revascularization; and a 1-year observation period that included a 3-month immunosuppressive drug administration period after transplantation of iPS cell-derived cardiomyocyte patches to evaluate adverse events, cardiac function, myocardial blood flow, heart failure symptoms, and immune response. Results In the first three cases of this trial, no transplanted cell-related adverse events were observed during the 1-year observation period, and improvement in heart failure symptoms was observed. In addition, improvements in left ventricular contractility and myocardial blood flow were observed in two of the three patients. Regarding immune response, an increase in transplant cell-specific antibody titer was observed in all three patients after immunosuppressive drug administration. In one patient with poor improvement in cardiac function and myocardial blood flow, an increase in antibody titer against HLA-DQ was observed even before cell transplantation. Conclusions Our case findings demonstrate that the transplantation of iPS cell-derived cardiomyocyte patches for ischemic cardiomyopathy can be safely performed; however, further investigation of the therapeutic effect and its relationship with an immune response is needed by accumulating the number of patients through continued clinical trials.
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Affiliation(s)
- Takuji Kawamura
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Yoshito Ito
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Emiko Ito
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Maki Takeda
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Tsubasa Mikami
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Takura Taguchi
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Noriko Mochizuki-Oda
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Masao Sasai
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Tomomi Shimamoto
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Yukako Nitta
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Daisuke Yoshioka
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Masashi Kawamura
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Ai Kawamura
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Yusuke Misumi
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Yasushi Sakata
- Department of Cardiology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Yoshiki Sawa
- Devision of Health Sciences, Osaka University Graduate School of Medicine, Suita, Japan
| | - Shigeru Miyagawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
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6
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Ito E, Kawamura A, Kawamura T, Takeda M, Harada A, Mochizuki-Oda N, Sawa Y, Miyagawa S. Establishment of a protocol to administer immunosuppressive drugs for iPS cell-derived cardiomyocyte patch transplantation in a rat myocardial infarction model. Sci Rep 2023; 13:10530. [PMID: 37385993 PMCID: PMC10310705 DOI: 10.1038/s41598-023-37235-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 06/18/2023] [Indexed: 07/01/2023] Open
Abstract
Transplantation of human allogeneic induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) is a new, promising treatment for severe heart failure. However, immunorejection is a significant concern in allogeneic hiPSC-CM transplantation, requiring the administration of several immunosuppressive agents. An appropriate protocol for the administration of immunosuppressants may substantially affect the efficacy of hiPSC-CM transplantation in case of heart failure owing to allogeneic transplantation. In this study, we investigated the effect of immunosuppressant administration duration on the efficacy and safety of allogenic hiPSC-CM patch transplantation. We used a rat model of myocardial infarction to evaluate cardiac function using echocardiography six months after the transplantation of hiPSC-CM patches with immunosuppressant administration for either two or four months and compared them to control rats (sham operation, no immunosuppressant administration). Histological analysis performed at 6 months after hiPSC-CM patch transplantation revealed significant improvement in cardiac function in immunosuppressant-treated rats compared with those in the control group. Moreover, fibrosis and cardiomyocyte size was significantly reduced and the number of structurally mature blood vessels was significantly increased in the immunosuppressant-treated rats compared to control rats. However, there were no significant differences between the two immunosuppressant-treated groups. Our results show that prolonged administration of immunosuppressive agents did not enhance the effectiveness of hiPSC-CM patch transplantation, and therefore, highlight the importance of an appropriate immunological regimen for the clinical application of such transplantation.
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Affiliation(s)
- Emiko Ito
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Ai Kawamura
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Takuji Kawamura
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Maki Takeda
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Akima Harada
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Noriko Mochizuki-Oda
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Yoshiki Sawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Shigeru Miyagawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
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Wong P, Cheung R, Ito E, Lopez M, Rubinstein E, Keller H, Cheung F, Liu Z, Liu F. Evaluating the Short-Term Environmental and Clinical Effects of a Radiation Oncology Department's Response to the COVID-19 Pandemic (STEER COVID-19). Int J Radiat Oncol Biol Phys 2022. [PMCID: PMC9595451 DOI: 10.1016/j.ijrobp.2022.07.1447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Purpose/Objective(s) During the COVID-19 pandemic, hypofractionated regimens and virtual care was adopted by our institution to preserve hospital capacity and reduce foot traffic. This study's primary objective was to assess the collective environmental impact of these strategic changes by identifying sources of carbon dioxide equivalents (CO2e). As sustainable healthcare is only justifiable if the quality of the care is maintained, we also evaluated the rate of radiation-related acute adverse event. Materials/Methods All patients treated with external beam radiation therapy from April 1, 2019 to March 31, 2021 at our single institution were identified (n=10,175) along with their radiotherapy visits (176,423 fractions), and visits to the radiation nursing clinic (RNC) or emergency (ER) department. A treatment regimen was considered hypofractionated if the dose per fraction was ≥ 240 cGy. If the dose per fraction was ≥ 600 cGy and the total dose of the treatment regimen was > 2000 cGy, then the treatment regimen was classified as SBRT. Out-patient hospital and virtual visits (n=75,853) during this same period were also analyzed. Environmental impact measures, including linear accelerator power usage, patient travel distances, and personal protection equipment (PPE) consumption were all converted into CO2e. A waiver of individual patient consent was granted for this study by our institution's Research Ethics Board (REB). Results The use of curative hypofractionated regimens increased from 17% to 27% during the pandemic year. Twelve out of 15 cancer sites increased their use of hypofractionated regimens. Carbon footprint was reduced by 39% during the pandemic year (1,332,388 kg CO2e) as compared to the pre-pandemic year (2,024,823 kg CO2e). For comparison, the 744 tonnes of CO2e saved during the pandemic year equates to the CO2e produced by the annual energy consumption of 182 Canadian households or the CO2e sequestered by 12,000 seedling trees planted and grown for 10 years. On average 121 kg CO2e and 100 kg CO2e were emitted per radiation regimen delivered during the pre-pandemic and pandemic year, respectively. Comparing patients in the pre-pandemic vs. pandemic year, there was a significant reduction in the proportion of hypofractionated patients who needed a visit to either the RNC (39% vs. 25%; p<0.001) or ER (6% vs. 2%; p<0.001) during and within 90 days of radiotherapy. Conclusion This study demonstrated the environmental benefits of increased use of hypofractionated regimens and virtual care, while assuring that there was no added acute radiation-related adverse event. Our findings support their continued use as one of many long-term strategies to reduce the environmental footprint of healthcare delivery. Treatment efficacy and side-effects will need to be assessed in subsequent years to further support the sustainability of these strategies.
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Miyagawa S, Kainuma S, Kawamura T, Suzuki K, Ito Y, Iseoka H, Ito E, Takeda M, Sasai M, Mochizuki-Oda N, Shimamoto T, Nitta Y, Dohi H, Watabe T, Sakata Y, Toda K, Sawa Y. Case report: Transplantation of human induced pluripotent stem cell-derived cardiomyocyte patches for ischemic cardiomyopathy. Front Cardiovasc Med 2022; 9:950829. [PMID: 36051285 PMCID: PMC9426776 DOI: 10.3389/fcvm.2022.950829] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 08/02/2022] [Indexed: 01/14/2023] Open
Abstract
Despite major therapeutic advances, heart failure, as a non-communicable disease, remains a life-threatening disorder, with 26 million patients worldwide, causing more deaths than cancer. Therefore, novel strategies for the treatment of heart failure continue to be an important clinical need. Based on preclinical studies, allogenic human induced pluripotent stem cell-derived cardiomyocyte (hiPSC-CM) patches have been proposed as a potential therapeutic candidate for heart failure. We report the implantation of allogeneic hiPSC-CM patches in a patient with ischemic cardiomyopathy (ClinicalTrials.gov, #jRCT2053190081). The patches were produced under clinical-grade conditions and displayed cardiogenic phenotypes and safety in vivo (severe immunodeficient mice) without any genetic mutations in cancer-related genes. The patches were then implanted via thoracotomy into the left ventricle epicardium of the patient under immunosuppressive agents. Positron emission tomography and computed tomography confirmed the potential efficacy and did not detect tumorigenesis in either the heart or other organs. The clinical symptoms improved 6 months after surgery, without any major adverse events, suggesting that the patches were well-tolerated. Furthermore, changes in the wall motion in the transplanted site were recovered, suggesting a favorable prognosis and the potential tolerance to exercise. This study is the first report of a successful transplant of hiPSC-CMs for severe ischemic cardiomyopathy.
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Affiliation(s)
- Shigeru Miyagawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
- *Correspondence: Shigeru Miyagawa
| | - Satoshi Kainuma
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Takuji Kawamura
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Kota Suzuki
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Yoshito Ito
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Hiroko Iseoka
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Emiko Ito
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Maki Takeda
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Masao Sasai
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Noriko Mochizuki-Oda
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Tomomi Shimamoto
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Yukako Nitta
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Hiromi Dohi
- Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
| | - Tadashi Watabe
- Department of Nuclear Medicine and Tracer Kinetics, Osaka University Graduate School of Medicine, Suita, Japan
| | - Yasushi Sakata
- Department of Cardiology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Koichi Toda
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Yoshiki Sawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan
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9
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Kondo T, Higo S, Shiba M, Kohama Y, Kameda S, Tabata T, Inoue H, Okuno S, Ogawa S, Nakamura S, Takeda M, Ito E, Li J, Liu L, Kuramoto Y, Lee JK, Takashima S, Miyagawa S, Sawa Y, Hikoso S, Sakata Y. Human-Induced Pluripotent Stem Cell–Derived Cardiomyocyte Model for
TNNT2
Δ160E-Induced Cardiomyopathy. Circ Genom Precis Med 2022; 15:e003522. [PMID: 35861968 PMCID: PMC9584061 DOI: 10.1161/circgen.121.003522] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The Δ160E mutation in TNNT2, which encodes troponin T, is a rare pathogenic variant identified in patients with hypertrophic cardiomyopathy and is associated with poor prognosis. Thus, a convenient human model recapitulating the pathological phenotype caused by TNNT2 Δ160E is required for therapeutic development.
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Affiliation(s)
- Takumi Kondo
- Department of Cardiovascular Medicine (T.K., M.S., S.K., T.T., H.I., S. Okuno, S. Ogawa, Y.K., J.-K.L., S. Hikoso, Y.S.)
| | - Shuichiro Higo
- Department of Medical Therapeutics for Heart Failure (S. Higo)
| | - Mikio Shiba
- Department of Cardiovascular Medicine (T.K., M.S., S.K., T.T., H.I., S. Okuno, S. Ogawa, Y.K., J.-K.L., S. Hikoso, Y.S.)
| | - Yasuaki Kohama
- National Hospital Organization, Osaka-Minami Medical Center (Y.K.)
| | - Satoshi Kameda
- Department of Cardiovascular Medicine (T.K., M.S., S.K., T.T., H.I., S. Okuno, S. Ogawa, Y.K., J.-K.L., S. Hikoso, Y.S.)
| | - Tomoka Tabata
- Department of Cardiovascular Medicine (T.K., M.S., S.K., T.T., H.I., S. Okuno, S. Ogawa, Y.K., J.-K.L., S. Hikoso, Y.S.)
| | - Hiroyuki Inoue
- Department of Cardiovascular Medicine (T.K., M.S., S.K., T.T., H.I., S. Okuno, S. Ogawa, Y.K., J.-K.L., S. Hikoso, Y.S.)
| | - Shota Okuno
- Department of Cardiovascular Medicine (T.K., M.S., S.K., T.T., H.I., S. Okuno, S. Ogawa, Y.K., J.-K.L., S. Hikoso, Y.S.)
| | - Shou Ogawa
- Department of Cardiovascular Medicine (T.K., M.S., S.K., T.T., H.I., S. Okuno, S. Ogawa, Y.K., J.-K.L., S. Hikoso, Y.S.)
| | | | - Maki Takeda
- Department of Cardiovascular Surgery (M.T., E.I., J.L., L.L., S.M., Y.S.)
| | - Emiko Ito
- Department of Cardiovascular Surgery (M.T., E.I., J.L., L.L., S.M., Y.S.)
| | - Junjun Li
- Department of Cardiovascular Surgery (M.T., E.I., J.L., L.L., S.M., Y.S.)
| | - Li Liu
- Department of Cardiovascular Surgery (M.T., E.I., J.L., L.L., S.M., Y.S.)
| | - Yuki Kuramoto
- Department of Cardiovascular Medicine (T.K., M.S., S.K., T.T., H.I., S. Okuno, S. Ogawa, Y.K., J.-K.L., S. Hikoso, Y.S.)
| | - Jong-Kook Lee
- Department of Cardiovascular Medicine (T.K., M.S., S.K., T.T., H.I., S. Okuno, S. Ogawa, Y.K., J.-K.L., S. Hikoso, Y.S.)
- Department of Cardiovascular Regenerative Medicine (J.-K.L.)
| | - Seiji Takashima
- Department of Medical Biochemistry, Osaka University Graduate School of Medicine (S.T.)
| | - Shigeru Miyagawa
- Department of Cardiovascular Surgery (M.T., E.I., J.L., L.L., S.M., Y.S.)
| | - Yoshiki Sawa
- Department of Cardiovascular Surgery (M.T., E.I., J.L., L.L., S.M., Y.S.)
| | - Shungo Hikoso
- Department of Cardiovascular Medicine (T.K., M.S., S.K., T.T., H.I., S. Okuno, S. Ogawa, Y.K., J.-K.L., S. Hikoso, Y.S.)
| | - Yasushi Sakata
- Department of Cardiovascular Medicine (T.K., M.S., S.K., T.T., H.I., S. Okuno, S. Ogawa, Y.K., J.-K.L., S. Hikoso, Y.S.)
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10
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Nakazato T, Kawamura T, Uemura T, Liu L, Li J, Sasai M, Harada A, Ito E, Iseoka H, Toda K, Sawa Y, Miyagawa S. Engineered three-dimensional cardiac tissues maturing in a rotating wall vessel bioreactor remodel diseased hearts in rats with myocardial infarction. Stem Cell Reports 2022; 17:1170-1182. [PMID: 35427484 PMCID: PMC9133656 DOI: 10.1016/j.stemcr.2022.03.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 03/19/2022] [Accepted: 03/21/2022] [Indexed: 10/30/2022] Open
Abstract
A rotating wall vessel (RWV) bioreactor was constructed for growing massive functional cardiac constructs to recover the function of a distressed rat heart. Three-dimensional cardiac tissues were engineered by seeding human-induced pluripotent stem cell-derived cardiomyocytes on poly(lactic-co-glycolic acid) fiber sheets (3D-hiPSC-CTs) and cultured in the RWV bioreactor (RWV group) or under static conditions (control group). The tissues were transplanted into a myocardial infarction nude rat model, and cardiac performance was evaluated. In the RWV group, cell viability and contractile and electrical properties significantly improved, mature cardiomyocytes were observed, and mechanical stress-related mediators of mammalian target of rapamycin signaling were upregulated compared with those of the control. Four weeks post-transplantation, tissue survival and left ventricular ejection fraction significantly improved in the RWV group. Hence, dynamic culture in an RWV bioreactor could provide a superior culture environment for improved performance of 3D-hiPSC-CTs, providing a means for functional cardiomyogenesis in myocyte-loss heart failure.
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Affiliation(s)
- Taro Nakazato
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Takuji Kawamura
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Toshimasa Uemura
- Department of Precise and Science Technology, Osaka University Graduate School of Engineering, Suita, Osaka, Japan; Cell Culture Marketing & Research Center, JTEC Corporation, Ibaraki, Osaka, Japan
| | - Li Liu
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Junjun Li
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Masao Sasai
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Akima Harada
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Emiko Ito
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Hiroko Iseoka
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Koichi Toda
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Yoshiki Sawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Shigeru Miyagawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan.
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11
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Inoue H, Nakamura S, Higo S, Shiba M, Kohama Y, Kondo T, Kameda S, Tabata T, Okuno S, Ikeda Y, Li J, Liu L, Yamazaki S, Takeda M, Ito E, Takashima S, Miyagawa S, Sawa Y, Hikoso S, Sakata Y. Modeling reduced contractility and impaired desmosome assembly due to plakophilin-2 deficiency using isogenic iPS cell-derived cardiomyocytes. Stem Cell Reports 2022; 17:337-351. [PMID: 35063130 PMCID: PMC8828557 DOI: 10.1016/j.stemcr.2021.12.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 12/20/2021] [Accepted: 12/21/2021] [Indexed: 12/13/2022] Open
Abstract
Loss-of-function mutations in PKP2, which encodes plakophilin-2, cause arrhythmogenic cardiomyopathy (AC). Restoration of deficient molecules can serve as upstream therapy, thereby requiring a human model that recapitulates disease pathology and provides distinct readouts in phenotypic analysis for proof of concept for gene replacement therapy. Here, we generated isogenic induced pluripotent stem cell-derived cardiomyocytes (iPSC-CMs) with precisely adjusted expression of plakophilin-2 from a patient with AC carrying a heterozygous frameshift PKP2 mutation. After monolayer differentiation, plakophilin-2 deficiency led to reduced contractility, disrupted intercalated disc structures, and impaired desmosome assembly in iPSC-CMs. Allele-specific fluorescent labeling of endogenous DSG2 encoding desmoglein-2 in the generated isogenic lines enabled real-time desmosome-imaging under an adjusted dose of plakophilin-2. Adeno-associated virus-mediated gene replacement of PKP2 recovered contractility and restored desmosome assembly, which was sequentially captured by desmosome-imaging in plakophilin-2-deficient iPSC-CMs. Our isogenic set of iPSC-CMs recapitulates AC pathology and provides a rapid and convenient cellular platform for therapeutic development. Generation of isogenic iPSC-CMs with a precise dose of plakophilin-2 Modeling reduced contractility and impaired desmosome assembly using iPSC-CMs Generation of isogenic iPSC-CMs for desmosome-imaging Proof of concept of PKP2 replacement using isogenic plakophilin-2-deficient iPSC-CMs
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Affiliation(s)
- Hiroyuki Inoue
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | | | - Shuichiro Higo
- Department of Medical Therapeutics for Heart Failure, 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
| | - Yasuaki Kohama
- Cardiovascular Division, National Hospital Organization, Osaka-Minami Medical Center, Kawachinagano, Osaka 586-8512, Japan
| | - Takumi Kondo
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Satoshi Kameda
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Tomoka Tabata
- 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
| | - Yoshihiko Ikeda
- Department of Pathology, National Cerebral and Cardiovascular Center, Suita, Osaka 564-8565, Japan
| | - Junjun Li
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan; Department of Design for Tissue Regeneration, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Li Liu
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan; Department of Design for Tissue Regeneration, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Satoru Yamazaki
- Department of Molecular Pharmacology, National Cerebral and Cardiovascular Center, Suita, Osaka 564-8565, Japan
| | - Maki Takeda
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Emiko Ito
- Department of Cardiovascular Surgery, 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
| | - 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, Suita, Osaka 565-0871, Japan
| | - Yasushi Sakata
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
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12
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Domae K, Miyagawa S, Yoshikawa Y, Fukushima S, Hata H, Saito S, Kainuma S, Kashiyama N, Iseoka H, Ito E, Harada A, Takeda M, Sakata Y, Toda K, Pak K, Yamada T, Sawa Y. Clinical Outcomes of Autologous Stem Cell-Patch Implantation for Patients With Heart Failure With Nonischemic Dilated Cardiomyopathy. J Am Heart Assoc 2021; 10:e008649. [PMID: 34212772 PMCID: PMC8403293 DOI: 10.1161/jaha.117.008649] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Background Clinical effectiveness of autologous skeletal cell‐patch implantation for nonischemic dilated cardiomyopathy has not been clearly elucidated in clinical settings. This clinical study aimed to determine the feasibility, safety, therapeutic efficacy, and the predictor of responders of this treatment in patients with nonischemic dilated cardiomyopathy. Methods and Results Twenty‐four nonischemic dilated cardiomyopathy patients with left ventricular ejection fraction <35% on optimal medical therapy were enrolled. Autologous cell patches were implanted over the surface of the left ventricle through left minithoracotomy without procedure‐related complications and lethal arrhythmia. We identified 13 responders and 11 nonresponders using the combined indicator of a major cardiac adverse event and incidence of heart failure event. In the responders, symptoms, exercise capacity, and cardiac performance were improved postoperatively (New York Heart Association class II 7 [54%] and III 6 [46%] to New York Heart Association class II 12 [92%] and I 1 [8%], P<0.05, 6‐minute walk test; 471 m [370–541 m] to 525 m [425–555 m], P<0.05, left ventricular stroke work index; 31.1 g·m2·beat [22.7–35.5 g·m2·beat] to 32.8 g·m2·beat [28–38.5 g·m2·beat], P=0.21). However, such improvement was not observed in the nonresponders. In responders, the actuarial survival rate was 90.9±8.7% at 5 years, which was superior to the estimated survival rate of 70.9±5.4% using the Seattle Heart Failure Model. However, they were similar in nonresponders (47.7±21.6% and 56.3±8.1%, respectively). Multivariate regression model with B‐type natriuretic peptide, pulmonary capillary wedge pressure, and expression of histone H3K4me3 (H3 lysine 4 trimethylation) strongly predicted the responder of this treatment (B‐type natriuretic peptide: odds ratio [OR], 0.96; pulmonary capillary wedge pressure: OR, 0.58; H3K4me3: OR, 1.35, receiver operating characteristic–area under the curve, 0.96, P<0.001). Conclusions This clinical trial demonstrated that autologous skeletal stem cell–patch implantation might promise functional recovery and good clinical outcome in selected patients with nonischemic dilated cardiomyopathy, in addition to safety and feasibility. Registration URL: http://www.umin.ac.jp/english/. Unique identifiers: UMIN000003273, UMIN0000012906 and UMIN000015892.
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Affiliation(s)
- Keitaro Domae
- Department of Cardiovascular Surgery Osaka University Graduate School of Medicine Osaka Japan
| | - Shigeru Miyagawa
- Department of Cardiovascular Surgery Osaka University Graduate School of Medicine Osaka Japan
| | - Yasushi Yoshikawa
- Department of Cardiovascular Surgery Osaka University Graduate School of Medicine Osaka Japan
| | - Satsuki Fukushima
- Department of Cardiovascular Surgery Osaka University Graduate School of Medicine Osaka Japan
| | - Hiroki Hata
- Department of Cardiovascular Surgery Osaka University Graduate School of Medicine Osaka Japan
| | - Shunsuke Saito
- Department of Cardiovascular Surgery Osaka University Graduate School of Medicine Osaka Japan
| | - Satoshi Kainuma
- Department of Cardiovascular Surgery Osaka University Graduate School of Medicine Osaka Japan
| | - Noriyuki Kashiyama
- Department of Cardiovascular Surgery Osaka University Graduate School of Medicine Osaka Japan
| | - Hiroko Iseoka
- Department of Cardiovascular Surgery Osaka University Graduate School of Medicine Osaka Japan
| | - Emiko Ito
- Department of Cardiovascular Surgery Osaka University Graduate School of Medicine Osaka Japan
| | - Akima Harada
- Department of Cardiovascular Surgery Osaka University Graduate School of Medicine Osaka Japan
| | - Maki Takeda
- Department of Cardiovascular Surgery Osaka University Graduate School of Medicine Osaka Japan
| | - Yasushi Sakata
- Department of Cardiology Osaka University Graduate School of Medicine Osaka Japan
| | - Koichi Toda
- Department of Cardiovascular Surgery Osaka University Graduate School of Medicine Osaka Japan
| | - Kyongsun Pak
- Division of Biostatistics Clinical Research Center National Center for Child Health and Development Tokyo Japan
| | - Tomomi Yamada
- Department of Medical Innovation Data Coordinating Center Osaka University Hospital Osaka Japan
| | - Yoshiki Sawa
- Department of Cardiovascular Surgery Osaka University Graduate School of Medicine Osaka Japan
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13
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Shiba M, Higo S, Kondo T, Li J, Liu L, Ikeda Y, Kohama Y, Kameda S, Tabata T, Inoue H, Nakamura S, Takeda M, Ito E, Takashima S, Miyagawa S, Sawa Y, Hikoso S, Sakata Y. Phenotypic recapitulation and correction of desmoglein-2-deficient cardiomyopathy using human-induced pluripotent stem cell-derived cardiomyocytes. Hum Mol Genet 2021; 30:1384-1397. [PMID: 33949662 PMCID: PMC8283207 DOI: 10.1093/hmg/ddab127] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 04/09/2021] [Accepted: 04/28/2021] [Indexed: 01/09/2023] Open
Abstract
Desmoglein-2, encoded by DSG2, is one of the desmosome proteins that maintain the structural integrity of tissues, including heart. Genetic mutations in DSG2 cause arrhythmogenic cardiomyopathy, mainly in an autosomal dominant manner. Here, we identified a homozygous stop-gain mutations in DSG2 (c.C355T, p.R119X) that led to complete desmoglein-2 deficiency in a patient with severe biventricular heart failure. Histological analysis revealed abnormal deposition of desmosome proteins, disrupted intercalated disk structures in the myocardium. Induced pluripotent stem cells (iPSCs) were generated from the patient (R119X-iPSC), and the mutated DSG2 gene locus was heterozygously corrected to a normal allele via homology-directed repair (HDR-iPSC). Both isogenic iPSCs were differentiated into cardiomyocytes [induced pluripotent stem cell-derived cardiomyocytes (iPSC-CMs)]. Multielectrode array analysis detected abnormal excitation in R119X-iPSC-CMs but not in HDR-iPSC-CMs. Micro-force testing of three-dimensional self-organized tissue rings (SOTRs) revealed tissue fragility and a weak maximum force in SOTRs from R119X-iPSC-CMs. Notably, these phenotypes were significantly recovered in HDR-iPSC-CMs. Myocardial fiber structures in R119X-iPSC-CMs were severely aberrant, and electron microscopic analysis confirmed that desmosomes were disrupted in these cells. Unexpectedly, the absence of desmoglein-2 in R119X-iPSC-CMs led to decreased expression of desmocollin-2 but no other desmosome proteins. Adeno-associated virus-mediated replacement of DSG2 significantly recovered the contraction force in SOTRs generated from R119X-iPSC-CMs. Our findings confirm the presence of a desmoglein-2-deficient cardiomyopathy among clinically diagnosed dilated cardiomyopathies. Recapitulation and correction of the disease phenotype using iPSC-CMs provide evidence to support the development of precision medicine and the proof of concept for gene replacement therapy for this cardiomyopathy.
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Affiliation(s)
- Mikio Shiba
- 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
| | - Takumi Kondo
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Junjun Li
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan.,Department of Design for Tissue Regeneration, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Li Liu
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan.,Department of Design for Tissue Regeneration, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Yoshihiko Ikeda
- Department of Pathology, National Cerebral and Cardiovascular Center, Suita, Osaka 564-8565, Japan
| | - Yasuaki Kohama
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Satoshi Kameda
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Tomoka Tabata
- 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
| | - 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
| | - Maki Takeda
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Emiko Ito
- Department of Cardiovascular Surgery, 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
| | - 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, Suita, Osaka 565-0871, Japan
| | - Yasushi Sakata
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
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14
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Affiliation(s)
- Y. Totani
- Department of Biology, Waseda University, Tokyo, Japan
| | - J. Nakai
- Department of Biology, Waseda University, Tokyo, Japan
| | - D. Hatakeyama
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima, Japan
| | - E. Ito
- Department of Biology, Waseda University, Tokyo, Japan
- Graduate Institute of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
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15
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Momozane T, Fukui E, Funaki S, Fujii M, Kinehara Y, Ito E, Miyagawa S, Ohno Y, Sawa Y, Okumura M, Shintani Y. Efficient Differentiation of Mouse Induced Pluripotent Stem Cells into Alveolar Epithelium Type II with a BRD4 Inhibitor. Stem Cells Int 2019; 2019:1271682. [PMID: 31949433 PMCID: PMC6948319 DOI: 10.1155/2019/1271682] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 11/05/2019] [Accepted: 11/19/2019] [Indexed: 01/10/2023] Open
Abstract
Regenerative medicine has continued to progress for lung biology and lung diseases. Efforts have focused on a variety of different applications for pluripotent stem cells. Several groups have reported successful methods for inducing differentiation of induced pluripotent stem cells (iPSCs) into the airway epithelium such as alveolar epithelium type II (ATII). However, differentiation efficiency varies among reports and improvements are needed. In the present paper, we propose a novel method for elimination of residual undifferentiated murine iPSCs using JQ1, a potent inhibitor of bromodomain (BRD) and extraterminal domain (BET) family proteins, for efficient differentiation into ATII. First, the murine iPSC line 20D-17 was induced to differentiate into ATII over a period of 26 days (days 0-26) using previously reported embryoid body seeding and stepwise differentiation methods. mRNA expressions of differentiation markers including surfactant protein C (Sftpc) were confirmed by real-time reverse transcription-polymerase chain reaction (RT-PCR) results, and 17% of the cells were shown positive for prosurfactant protein C (proSPC) in flow cytometry analysis. Next, those cells were cultured three-dimensionally in Matrigel for an additional 14 days (days 26-40), during which JQ1 was added for 4 days (days 28-32) to remove residual undifferentiated iPSCs. As a result, on day 40, the mRNA expression level of Sftpc in the three-dimensional culture was maintained at the same level as on day 26 and shown to be further increased by the addition of JQ1, with 39% of the cells found to express proSPC, showing that differentiation efficiency could be further increased. Three-dimensional culture with BRD4 inhibition by JQ1 improved the differentiation induction efficiency to ATII by removing residual undifferentiated murine iPSCs during the differentiation induction process.
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Affiliation(s)
- Toru Momozane
- Department of General Thoracic Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Eriko Fukui
- Department of General Thoracic Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Soichiro Funaki
- Department of General Thoracic Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Makoto Fujii
- Department of Mathematical Health Science, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yuhei Kinehara
- Department of Respiratory Medicine and Clinical Immunology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Emiko Ito
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Shigeru Miyagawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yuko Ohno
- Department of Mathematical Health Science, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yoshiki Sawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Meinoshin Okumura
- Department of General Thoracic Surgery, National Hospital Organization Toneyama Hospital, Osaka, Japan
| | - Yasushi Shintani
- Department of General Thoracic Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
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16
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Ishida M, Miyagawa S, Saito A, Fukushima S, Harada A, Ito E, Ohashi F, Watabe T, Hatazawa J, Matsuura K, Sawa Y. Transplantation of Human-induced Pluripotent Stem Cell-derived Cardiomyocytes Is Superior to Somatic Stem Cell Therapy for Restoring Cardiac Function and Oxygen Consumption in a Porcine Model of Myocardial Infarction. Transplantation 2019; 103:291-298. [PMID: 30119058 PMCID: PMC6365242 DOI: 10.1097/tp.0000000000002384] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Background Somatic stem cell (SC) therapy can improve cardiac performance following ischemic injury. In this study, we investigated whether induced pluripotent SC-derived cardiomyocytes (iPS-CMs) are more effective than somatic SCs, such as skeletal myoblasts (SM) and mesenchymal (M)SCs, in promoting functional recovery upon transplantation in a porcine model of myocardial infarction. Methods Myocardial injury was induced by ameroid ring placement in immunosuppressed female mini pigs; after 1 month, epicardial cell transplantation was performed with iPS-CMs (n = 7), SMs (n = 7), and MSCs (n = 7). Control pigs underwent sham operation (n = 8). Results Cell therapy improved functional recovery 2 months after myocardial infarction, as evidenced by increased ejection fraction (iPS-CM, +7.3% ± 2.2% and SM, +5.8% ± 5.4% vs control, −4.4% ± 3.8%; P < 0.05). The analysis of regional contractile function in the infarcted zone revealed an increase in transverse peak strain (iPS-CM, +4.6% ± 2.2% vs control, −3.8% ± 4.7%; P < 0.05). The C-11 acetate kinetic analysis by positron emission tomography showed that the work-metabolic cardiac energy efficacy increased by the transplantation of iPS-CMs, but was reduced by the other cell types. This was accompanied by decreased myocardial wall stress in the infarcted zone (iPS-CM, −27.6 ± 32.3 Pa and SM, −12.8 ± 27 Pa vs control, +40.5 ± 33.9 Pa; P < 0.05). Conclusions The iPS-CM is superior to other somatic cell sources in terms of improving regional contractile function and cardiac bioenergetic efficiency, suggesting greater clinical benefits in severely damaged myocardium. The authors compare the therapeutic effects among human induced pluripotent stem cell-derived cardiomyocytes, skeletal myoblasts stem cells and mesenchymal stem cells on promoting cardiac functional recovery including regional contractile function and cardiac bioenergetic efficiency in a porcine model of myocardial infarction. Supplemental digital content is available in the text.
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Affiliation(s)
- Masaru Ishida
- Division of Surgery, Department of Cardiovascular Surgery, Faculty of Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Shigeru Miyagawa
- Division of Surgery, Department of Cardiovascular Surgery, Faculty of Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Atsuhiro Saito
- Medical Center for Translational Research, Osaka University Hospital, Osaka, Japan
| | - Satsuki Fukushima
- Division of Surgery, Department of Cardiovascular Surgery, Faculty of Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Akima Harada
- Division of Surgery, Department of Cardiovascular Surgery, Faculty of Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Emiko Ito
- Division of Surgery, Department of Cardiovascular Surgery, Faculty of Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Fumiya Ohashi
- Division of Surgery, Department of Cardiovascular Surgery, Faculty of Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Tadashi Watabe
- Department of Nuclear Medicine and Tracer Kinetics, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Jun Hatazawa
- Department of Nuclear Medicine and Tracer Kinetics, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Katsuhisa Matsuura
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Shinjuku, Tokyo, Japan
| | - Yoshiki Sawa
- Division of Surgery, Department of Cardiovascular Surgery, Faculty of Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
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Ohashi F, Miyagawa S, Yasuda S, Miura T, Kuroda T, Itoh M, Kawaji H, Ito E, Yoshida S, Saito A, Sameshima T, Kawai J, Sawa Y, Sato Y. CXCL4/PF4 is a predictive biomarker of cardiac differentiation potential of human induced pluripotent stem cells. Sci Rep 2019; 9:4638. [PMID: 30874579 PMCID: PMC6420577 DOI: 10.1038/s41598-019-40915-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 02/21/2019] [Indexed: 12/23/2022] Open
Abstract
Selection of human induced pluripotent stem cell (hiPSC) lines with high cardiac differentiation potential is important for regenerative therapy and drug screening. We aimed to identify biomarkers for predicting cardiac differentiation potential of hiPSC lines by comparing the gene expression profiles of six undifferentiated hiPSC lines with different cardiac differentiation capabilities. We used three platforms of gene expression analysis, namely, cap analysis of gene expression (CAGE), mRNA array, and microRNA array to efficiently screen biomarkers related to cardiac differentiation of hiPSCs. Statistical analysis revealed candidate biomarker genes with significant correlation between the gene expression levels in the undifferentiated hiPSCs and their cardiac differentiation potential. Of the candidate genes, PF4 was validated as a biomarker expressed in undifferentiated hiPSCs with high potential for cardiac differentiation in 13 additional hiPSC lines. Our observations suggest that PF4 may be a useful biomarker for selecting hiPSC lines appropriate for the generation of cardiomyocytes.
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Affiliation(s)
- Fumiya Ohashi
- Division of Cell-Based Therapeutic Products, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa, 210-9501, Japan.,Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, Osaka, 565-0871, Japan.,Department of Cellular & Gene Therapy Products, Osaka University Graduate School of Pharmaceutical Sciences, 1-6 Yamadaoka, Suita, Osaka, 565-0871, Japan.,Terumo Corporation, 1500 Inokuchi, Nakai-machi, Ashigarakami-gun, Kanagawa, 259-0151, Japan
| | - Shigeru Miyagawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Satoshi Yasuda
- Division of Cell-Based Therapeutic Products, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa, 210-9501, Japan
| | - Takumi Miura
- Division of Cell-Based Therapeutic Products, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa, 210-9501, Japan
| | - Takuya Kuroda
- Division of Cell-Based Therapeutic Products, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa, 210-9501, Japan
| | - Masayoshi Itoh
- Preventive Medicine and Diagnosis Innovation Program, RIKEN Center, 1-7-22, Suehirocho, Tsurumi-ku, Yokohama, Kanagawa, 230-0045, Japan
| | - Hideya Kawaji
- Preventive Medicine and Diagnosis Innovation Program, RIKEN Center, 1-7-22, Suehirocho, Tsurumi-ku, Yokohama, Kanagawa, 230-0045, Japan.,Preventive Medicine and Applied Genomics Unit, RIKEN Center for Integrative Medical Sciences, 1-7-22 Suehirocho, Tsurumi-ku, Yokohama, Kanagawa, 230-0045, Japan
| | - Emiko Ito
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Shohei Yoshida
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Atsuhiro Saito
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Tadashi Sameshima
- Terumo Corporation, 1500 Inokuchi, Nakai-machi, Ashigarakami-gun, Kanagawa, 259-0151, Japan
| | - Jun Kawai
- Preventive Medicine and Diagnosis Innovation Program, RIKEN Center, 1-7-22, Suehirocho, Tsurumi-ku, Yokohama, Kanagawa, 230-0045, Japan
| | - Yoshiki Sawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Yoji Sato
- Division of Cell-Based Therapeutic Products, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa, 210-9501, Japan. .,Department of Cellular & Gene Therapy Products, Osaka University Graduate School of Pharmaceutical Sciences, 1-6 Yamadaoka, Suita, Osaka, 565-0871, Japan. .,Department of Quality Assurance Science for Pharmaceuticals, Nagoya City University Graduate School of Pharmaceutical Sciences, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Aichi, 467-8603, Japan. .,Department of Translational Pharmaceutical Sciences, Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka, 812-8582, Japan. .,LiSE Laboratory, Kanagawa Institute of Industrial Science and Technology, 3-25-13 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa, 210-0821, Japan.
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18
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Ito E, Miyagawa S, Takeda M, Kawamura A, Harada A, Iseoka H, Yajima S, Sougawa N, Mochizuki-Oda N, Yasuda S, Sato Y, Sawa Y. Tumorigenicity assay essential for facilitating safety studies of hiPSC-derived cardiomyocytes for clinical application. Sci Rep 2019; 9:1881. [PMID: 30760836 PMCID: PMC6374479 DOI: 10.1038/s41598-018-38325-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 11/26/2018] [Indexed: 11/09/2022] Open
Abstract
Transplantation of cardiomyocytes (CMs) derived from human induced pluripotent stem cells (hiPSC-CMs) is a promising treatment for heart failure, but residual undifferentiated hiPSCs and malignant transformed cells may lead to tumor formation. Here we describe a highly sensitive tumorigenicity assay for the detection of these cells in hiPSC-CMs. The soft agar colony formation assay and cell growth analysis were unable to detect malignantly transformed cells in hiPSC-CMs. There were no karyotypic abnormalities during hiPSCs subculture and differentiation. The hiPSC markers TRA1-60 and LIN28 showed the highest sensitivity for detecting undifferentiated hiPSCs among primary cardiomyocytes. Transplantation of hiPSC-CMs with a LIN28-positive fraction > 0.33% resulted in tumor formation in nude rats, whereas no tumors were formed when the fraction was < 0.1%. These findings suggested that combination of these in vitro and in vivo tumorigenecity assays can verify the safety of hiPSC-CMs for cell transplantation therapy.
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Affiliation(s)
- Emiko Ito
- Department of Cardiovascular Surgery, 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
| | - Maki Takeda
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Ai Kawamura
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Akima Harada
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Hiroko Iseoka
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Shin Yajima
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Nagako Sougawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Noriko Mochizuki-Oda
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Satoshi Yasuda
- Division of Cell-Based Therapeutic Products, National Institute of Health Sciences, Kawasaki, Kanagawa, 210-9501, Japan
| | - Yoji Sato
- Division of Cell-Based Therapeutic Products, National Institute of Health Sciences, Kawasaki, Kanagawa, 210-9501, Japan
| | - Yoshiki Sawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan.
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19
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Sougawa N, Miyagawa S, Fukushima S, Kawamura A, Yokoyama J, Ito E, Harada A, Okimoto K, Mochizuki-Oda N, Saito A, Sawa Y. Immunologic targeting of CD30 eliminates tumourigenic human pluripotent stem cells, allowing safer clinical application of hiPSC-based cell therapy. Sci Rep 2018; 8:3726. [PMID: 29487310 PMCID: PMC5829260 DOI: 10.1038/s41598-018-21923-8] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Accepted: 02/13/2018] [Indexed: 01/14/2023] Open
Abstract
Induced pluripotent stem cells (iPSCs) are promising candidate cells for cardiomyogenesis in the failing heart. However, teratoma/tumour formation originating from undifferentiated iPSCs contaminating the graft is a critical concern for clinical application. Here, we hypothesized that brentuximab vedotin, which targets CD30, induces apoptosis in tumourigenic cells, thus increasing the safety of iPSC therapy for heart failure. Flow cytometry analysis identified consistent expression of CD30 in undifferentiated human iPSCs. Addition of brentuximab vedotin in vitro for 72 h efficiently induced cell death in human iPSCs, associated with a significant increase in G2/M phase cells. Brentuximab vedotin significantly reduced Lin28 expression in cardiomyogenically differentiated human iPSCs. Transplantation of human iPSC-derived cardiomyocytes (CMs) without treatment into NOG mice consistently induced teratoma/tumour formation, with a substantial number of Ki-67-positive cells in the graft at 4 months post-transplant, whereas iPSC-derived CMs treated with brentuximab vedotin prior to the transplantation did not show teratoma/tumour formation, which was associated with absence of Ki-67-positive cells in the graft over the same period. These findings suggest that in vitro treatment with brentuximab vedotin, targeting the CD30-positive iPSC fraction, reduced tumourigenicity in human iPSC-derived CMs, potentially providing enhanced safety for iPSC-based cardiomyogenesis therapy in clinical scenarios.
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Affiliation(s)
- Nagako Sougawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Shigeru Miyagawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Satsuki Fukushima
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Ai Kawamura
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Junya Yokoyama
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Emiko Ito
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Akima Harada
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Kaori Okimoto
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Noriko Mochizuki-Oda
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Atsuhiro Saito
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Yoshiki Sawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan.
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20
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Shimizu S, Takashima Y, Hotta M, Ito E, Moriuchi R. Inflammatory disseminated superficial porokeratosis successfully controlled with a combination of topical diclofenac gel and systemic etretinate. J Eur Acad Dermatol Venereol 2017; 32:e201-e202. [PMID: 29194784 DOI: 10.1111/jdv.14727] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- S. Shimizu
- Department of Dermatology; Sapporo City General Hospital; North 11, West 13, Chuo-Ku Sapporo Hokkaido 060-8604 Japan
| | - Y. Takashima
- Department of Dermatology; Sapporo City General Hospital; North 11, West 13, Chuo-Ku Sapporo Hokkaido 060-8604 Japan
| | - M. Hotta
- Department of Dermatology; Sapporo City General Hospital; North 11, West 13, Chuo-Ku Sapporo Hokkaido 060-8604 Japan
| | - E. Ito
- Iwata Dermatology Clinic; North 26, East 6-1-28, Higashi-Ku Sapporo, Hokkaido 065-0026 Japan
| | - R. Moriuchi
- Department of Dermatology; Sapporo City General Hospital; North 11, West 13, Chuo-Ku Sapporo Hokkaido 060-8604 Japan
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21
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Takeda M, Miyagawa S, Fukushima S, Saito A, Ito E, Harada A, Matsuura R, Iseoka H, Sougawa N, Mochizuki-Oda N, Matsusaki M, Akashi M, Sawa Y. Development of In Vitro Drug-Induced Cardiotoxicity Assay by Using Three-Dimensional Cardiac Tissues Derived from Human Induced Pluripotent Stem Cells. Tissue Eng Part C Methods 2017; 24:56-67. [PMID: 28967302 PMCID: PMC5757089 DOI: 10.1089/ten.tec.2017.0247] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
An in vitro drug-induced cardiotoxicity assay is a critical step in drug discovery for clinical use. The use of human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) is promising for this purpose. However, single hiPSC-CMs are limited in their ability to mimic native cardiac tissue structurally and functionally, and the generation of artificial cardiac tissue using hiPSC-CMs is an ongoing challenging. We therefore developed a new method of constructing three-dimensional (3D) artificial tissues in a short time by coating extracellular matrix (ECM) components on cell surfaces. We hypothesized that 3D cardiac tissues derived from hiPSC-CMs (3D-hiPSC-CT) could be used for an in vitro drug-induced cardiotoxicity assay. 3D-hiPSC-CT were generated by fibronectin and gelatin nanofilm coated single hiPSC-CMs. Histologically, 3D-hiPSC-CT exhibited a sarcomere structure in the myocytes and ECM proteins, such as fibronectin, collagen type I/III, and laminin. The administration of cytotoxic doxorubicin at 5.0 μM induced the release of lactate dehydrogenase, while that at 2.0 μM reduced the cell viability. E-4031, human ether-a-go-go related gene (hERG)-type potassium channel blocker, and isoproterenol induced significant changes both in the Ca transient parameters and contractile parameters in a dose-dependent manner. The 3D-hiPSC-CT exhibited doxorubicin-sensitive cytotoxicity and hERG channel blocker/isoproterenol-sensitive electrical activity in vitro, indicating its usefulness for drug-induced cardiotoxicity assays or drug screening systems for drug discovery.
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Affiliation(s)
- Maki Takeda
- 1 Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine , Suita, Osaka, Japan
| | - Shigeru Miyagawa
- 1 Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine , Suita, Osaka, Japan
| | - Satsuki Fukushima
- 1 Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine , Suita, Osaka, Japan
| | - Atsuhiro Saito
- 1 Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine , Suita, Osaka, Japan
| | - Emiko Ito
- 1 Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine , Suita, Osaka, Japan
| | - Akima Harada
- 1 Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine , Suita, Osaka, Japan
| | - Ryohei Matsuura
- 1 Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine , Suita, Osaka, Japan
| | - Hiroko Iseoka
- 1 Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine , Suita, Osaka, Japan
| | - Nagako Sougawa
- 1 Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine , Suita, Osaka, Japan
| | - Noriko Mochizuki-Oda
- 1 Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine , Suita, Osaka, Japan
| | - Michiya Matsusaki
- 2 Department of Applied Chemistry, Osaka University Graduate School of Engineering , Osaka, Japan
| | - Mitsuru Akashi
- 3 Building Block Science Joint Research Chair, Graduate School of Frontier Biosciences, Osaka University , Suita, Japan
| | - Yoshiki Sawa
- 1 Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine , Suita, Osaka, Japan
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Ito E, Miyagawa S, Fukushima S, Yoshikawa Y, Saito S, Saito T, Harada A, Takeda M, Kashiyama N, Nakamura Y, Shiozaki M, Toda K, Sawa Y. Histone Modification Is Correlated With Reverse Left Ventricular Remodeling in Nonischemic Dilated Cardiomyopathy. Ann Thorac Surg 2017; 104:1531-1539. [DOI: 10.1016/j.athoracsur.2017.04.046] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 04/13/2017] [Accepted: 04/18/2017] [Indexed: 10/19/2022]
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Hata M, Koike I, Miyagi E, Numazaki R, Asai-Sato M, Kaizu H, Mukai Y, Takano S, Ito E, Sugiura M, Inoue T. Safety and Efficacy of Radiation Therapy for Very Elderly Patients Aged 80 Years or Older with Uterine Cervical Cancer. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Affiliation(s)
- E. Ito
- Department of Biology, Waseda University , Tokyo, Japan
| | - Y. Totani
- Department of Biology, Waseda University , Tokyo, Japan
| | - A. Oike
- Department of Biology, Waseda University , Tokyo, Japan
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Inui S, Minami K, Ito E, Imaizumi H, Mori S, Koizumi M, Fukushima S, Miyagawa S, Sawa Y, Matsuura N. Irradiation strongly reduces tumorigenesis of human induced pluripotent stem cells. J Radiat Res 2017; 58:430-438. [PMID: 28340154 PMCID: PMC5570064 DOI: 10.1093/jrr/rrw124] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 07/27/2016] [Indexed: 05/30/2023]
Abstract
Induced pluripotent stem (iPS) cells have demonstrated they can undergo self-renewal, attain pluripotency, and differentiate into various types of functional cells. In clinical transplantation of iPS cells, however, a major problem is the prevention of tumorigenesis. We speculated that tumor formation could be inhibited by means of irradiation. Since the main purpose of this study was to explore the prevention of tumor formation in human iPS (hiPS) cells, we tested the effects of irradiation on tumor-associated factors such as radiosensitivity, pluripotency and cell death in hiPS cells. The irradiated hiPS cells showed much higher radiosensitivity, because the survival fraction of hiPS cells irradiated with 2 Gy was < 10%, and there was no change of pluripotency. Irradiation with 2 and 4 Gy caused substantial cell death, which was mostly the result of apoptosis. Irradiation with 2 Gy was detrimental enough to cause loss of proliferation capability and trigger substantial cell death in vitro. The hiPS cells irradiated with 2 Gy were injected into NOG mice (NOD/Shi-scid, IL-2 Rγnull) for the analysis of tumor formation. The group of mice into which hiPS cells irradiated with 2 Gy was transplanted showed significant suppression of tumor formation in comparison with that of the group into which non-irradiated hiPS cells were transplanted. It can be presumed that this diminished rate of tumor formation was due to loss of proliferation and cell death caused by irradiation. Our findings suggest that tumor formation following cell therapy or organ transplantation induced by hiPS cells may be prevented by irradiation.
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Affiliation(s)
- Shoki Inui
- Department of Radiation Oncology, Osaka Medical Center for Cancer and Cadiovascular Diseases, Nakamichi 1-3-3, Higashinari-ku, Osaka, Japan
| | - Kazumasa Minami
- Department of Molecular Pathology, Osaka University Graduate School of Medicine, Division of Health Sciences, Suita, Osaka, Japan
- Department of Radiation Oncology, Osaka University Graduate School of Medicine, Division of Health Sciences, Suita, Osaka, Japan
| | - Emiko Ito
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | | | - Seiji Mori
- Department of Molecular Pathology, Osaka University Graduate School of Medicine, Division of Health Sciences, Suita, Osaka, Japan
- Department of Clinical Laboratory, Morinomiya University of Medical Sciences, Suminoe-ku, Osaka, Japan
| | - Masahiko Koizumi
- Department of Radiation Oncology, Osaka University Graduate School of Medicine, Division of Health Sciences, Suita, Osaka, Japan
| | - Satsuki Fukushima
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Shigeru Miyagawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Yoshiki Sawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Nariaki Matsuura
- Department of Radiation Oncology, Osaka Medical Center for Cancer and Cadiovascular Diseases, Nakamichi 1-3-3, Higashinari-ku, Osaka, Japan
- Department of Molecular Pathology, Osaka University Graduate School of Medicine, Division of Health Sciences, Suita, Osaka, Japan
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Iseoka H, Miyagawa S, Fukushima S, Saito A, Masuda S, Yajima S, Ito E, Sougawa N, Takeda M, Harada A, Lee JK, Sawa Y. Pivotal Role of Non-cardiomyocytes in Electromechanical and Therapeutic Potential of Induced Pluripotent Stem Cell-Derived Engineered Cardiac Tissue. Tissue Eng Part A 2017; 24:287-300. [PMID: 28498040 PMCID: PMC5792250 DOI: 10.1089/ten.tea.2016.0535] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Although engineered cardiac tissues (ECTs) derived from induced pluripotent stem cells (iPSCs) are promising for myocardial regenerative therapy, the appropriate ratio of cardiomyocytes to non-cardiomyocytes is not fully understood. Here, we determined whether ECT-cell content is a key determinant of its structure/function, thereby affecting ECT therapeutic potential for advanced heart failure. Scaffold-free ECTs containing different ratios (25%, 50%, 70%, or 90%) of iPSC-derived cardiomyocytes were generated by magnetic-activated cell sorting by using cardiac-specific markers. Notably, ECTs showed synchronized spontaneous beating when cardiomyocytes constituted ≥50% of total cells, with the electrical-conduction velocity increasing depending on cardiomyocyte ratio; however, ECTs containing 90% cardiomyocytes failed to form stable structures. ECTs containing 25% or 50% cardiomyocytes predominantly expressed collagen and fibronectin, whereas ECTs containing 70% cardiomyocytes predominantly expressed laminin and exhibited the highest contractile/relaxation properties. Furthermore, transplantation of ECTs containing 50% or 70% cardiomyocytes into a rat chronic myocardial infarction model led to a more profound functional recovery as compared with controls. Notably, transplanted ECTs showed electrical synchronization with the native heart under Langendorff perfusion. Collectively, these results indicate that the quantity of non-cardiomyocytes is critical in generating functional iPSC-derived ECTs as grafts for cardiac-regeneration therapy, with ECTs containing 50–70% cardiomyocytes exhibiting stable structures and increased cardiotherapeutic potential.
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Affiliation(s)
- Hiroko Iseoka
- 1 Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine , Osaka, Japan .,2 Terumo Corporation , Tokyo, Japan
| | - Shigeru Miyagawa
- 1 Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine , Osaka, Japan
| | - Satsuki Fukushima
- 1 Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine , Osaka, Japan
| | - Atsuhiro Saito
- 1 Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine , Osaka, Japan
| | - Shigeo Masuda
- 1 Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine , Osaka, Japan
| | - Shin Yajima
- 1 Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine , Osaka, Japan
| | - Emiko Ito
- 1 Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine , Osaka, Japan
| | - Nagako Sougawa
- 1 Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine , Osaka, Japan
| | - Maki Takeda
- 1 Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine , Osaka, Japan
| | - Akima Harada
- 1 Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine , Osaka, Japan
| | - Jong-Kook Lee
- 3 Department of Cardiovascular Regenerative Medicine, Osaka University Graduate School of Medicine , Osaka, Japan
| | - Yoshiki Sawa
- 1 Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine , Osaka, Japan
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Yamashita A, Murakami T, Kadowaki S, Yoshida K, Ito E, Matsuda N, Chang F, Hattori N, Miyai I, Ugawa Y. Spike-timing dependent plasticity at spinal motoneurons. Brain Stimul 2017. [DOI: 10.1016/j.brs.2017.01.157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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28
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Ihara T, Hosokawa Y, Kumazawa K, Ishikawa K, Fujimoto J, Yamamoto M, Muramkami T, Goshima N, Ito E, Watanabe S, Semba K. An in vivo screening system to identify tumorigenic genes. Oncogene 2016; 36:2023-2029. [PMID: 27694896 DOI: 10.1038/onc.2016.351] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Revised: 08/11/2016] [Accepted: 08/15/2016] [Indexed: 12/26/2022]
Abstract
Screening for oncogenes has mostly been performed by in vitro transformation assays. However, some oncogenes might not exhibit their transforming activities in vitro unless putative essential factors from in vivo microenvironments are adequately supplied. Here, we have developed an in vivo screening system that evaluates the tumorigenicity of target genes. This system uses a retroviral high-efficiency gene transfer technique, a large collection of human cDNA clones corresponding to ~70% of human genes and a luciferase-expressing immortalized mouse mammary epithelial cell line (NMuMG-luc). From 845 genes that were highly expressed in human breast cancer cell lines, we focused on 205 genes encoding membrane proteins and/or kinases as that had the greater possibility of being oncogenes or drug targets. The 205 genes were divided into five subgroups, each containing 34-43 genes, and then introduced them into NMuMG-luc cells. These cells were subcutaneously injected into nude mice and monitored for tumor development by in vivo imaging. Tumors were observed in three subgroups. Using DNA microarray analyses and individual tumorigenic assays, we found that three genes, ADORA2B, PRKACB and LPAR3, were tumorigenic. ADORA2B and LPAR3 encode G-protein-coupled receptors and PRKACB encodes a protein kinase A catalytic subunit. Cells overexpressing ADORA2B, LPAR3 or PRKACB did not show transforming phenotypes in vitro, suggesting that transformation by these genes requires in vivo microenvironments. In addition, several clinical data sets, including one for breast cancer, showed that the expression of these genes correlated with lower overall survival rate.
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Affiliation(s)
- T Ihara
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Y Hosokawa
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - K Kumazawa
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - K Ishikawa
- Japan Biological Informatics Consortium (JBiC), Tokyo, Japan
| | - J Fujimoto
- Japan Biological Informatics Consortium (JBiC), Tokyo, Japan
| | - M Yamamoto
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - T Muramkami
- Laboratory of Tumor Biology, Faculty of Pharmacy, Takasaki University of Health and Welfare, Takasaki, Japan
| | - N Goshima
- Quantitative Proteomics Team, Molecular Profiling Research Center for Drug Discovery (molprof), National Institute of Advanced Industrial Science and Technology (AIST), Tokyo, Japan.,Division of Transcriptome Analysis, Fukushima, Japan
| | - E Ito
- Division of Gene Expression Analysis, Fukushima, Japan
| | - S Watanabe
- Division of Gene Expression Analysis, Fukushima, Japan
| | - K Semba
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering, Waseda University, Tokyo, Japan.,Division of gene function analysis, Translational Research Center, Fukushima Medical University, Fukushima, Japan
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29
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Kawasumi H, Katsumata Y, Ito E, Nishino A, Kawaguchi Y, Yamanaka H. FRI0282 Post-Treatment Short-Term Changes in Needle Electromyography among Patients with Polymyositis and Dermatomyositis and Their Clinical Usefulness: A Retrospective Study. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.1092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Yoshimi A, Toya T, Nannya Y, Takaoka K, Kirito K, Ito E, Nakajima H, Hayashi Y, Takahashi T, Moriya-Saito A, Suzuki K, Harada H, Komatsu N, Usuki K, Ichikawa M, Kurokawa M. Spectrum of clinical and genetic features of patients with inherited platelet disorder with suspected predisposition to hematological malignancies: a nationwide survey in Japan. Ann Oncol 2016; 27:887-95. [DOI: 10.1093/annonc/mdw066] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2015] [Accepted: 02/08/2016] [Indexed: 11/13/2022] Open
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31
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Kamachi K, Ozawa S, Hayashi T, Kazuno A, Ito E, Makuuchi H. Impact of body mass index on postoperative complications and long-term survival in patients with esophageal squamous cell cancer. Dis Esophagus 2016; 29:229-35. [PMID: 25789403 DOI: 10.1111/dote.12327] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Undernutrition and cachexia have been suggested to be risk factors for postoperative complications and survival in cancer patients. The aim of this study was to investigate whether body mass index (BMI) is related to the short-term and long-term outcomes in patients who undergo an esophagectomy for the resection of esophageal squamous cell cancer (ESCC). Three hundred forty patients who underwent an esophagectomy for the resection of ESCC between 2003 and 2008 were retrospectively reviewed. The patients were divided into two groups: an L-BMI group characterized by a BMI < 18.5 kg/m(2) and an N-BMI group characterized by a BMI ≥ 18.5 kg/m(2). Clinical and pathological outcome were compared between groups. The study included 40 patients in the L-BMI group and 300 patients in the N-BMI group. A clinicopathological assessment showed that nodal involvement was seen more frequently in the L-BMI group (P = 0.016). Pulmonary complications seemed to occur more frequently in the L-BMI group (P = 0.006). The 5-year overall survival rate was higher in the N-BMI group (63.6%) than in the L-BMI group (32.3%) (P < 0.001). The 5-year disease-free survival rate was also higher in the N-BMI group (58.0%) than in the L-BMI group (33.6%) (P = 0.001). In multivariate analysis, the BMI (hazard ratio, 2.154; 95% CI, 1.349-3.440, P = 0.001) was found to be an independent prognostic factor for overall survival. Our data suggested that a lower BMI not only increased pulmonary complications but also impaired overall and disease-free survival after an esophagectomy for the resection of ESCC.
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Affiliation(s)
- K Kamachi
- Department of Gastroenterological Surgery, Tokai University School of Medicine, Kanagawa, Japan
| | - S Ozawa
- Department of Gastroenterological Surgery, Tokai University School of Medicine, Kanagawa, Japan
| | - T Hayashi
- Department of Gastroenterological Surgery, Tokai University School of Medicine, Kanagawa, Japan
| | - A Kazuno
- Department of Gastroenterological Surgery, Tokai University School of Medicine, Kanagawa, Japan
| | - E Ito
- Department of Gastroenterological Surgery, Tokai University School of Medicine, Kanagawa, Japan
| | - H Makuuchi
- Department of Gastroenterological Surgery, Tokai University School of Medicine, Kanagawa, Japan
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Kawamura A, Miyagawa S, Fukushima S, Kawamura T, Kashiyama N, Ito E, Watabe T, Masuda S, Toda K, Hatazawa J, Morii E, Sawa Y. Teratocarcinomas Arising from Allogeneic Induced Pluripotent Stem Cell-Derived Cardiac Tissue Constructs Provoked Host Immune Rejection in Mice. Sci Rep 2016; 6:19464. [PMID: 26763872 PMCID: PMC4725880 DOI: 10.1038/srep19464] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Accepted: 12/09/2015] [Indexed: 12/01/2022] Open
Abstract
Transplantation of induced pluripotent stem cell-derived cardiac tissue constructs is a promising regenerative treatment for cardiac failure: however, its tumourigenic potential is concerning. We hypothesised that the tumourigenic potential may be eliminated by the host immune response after allogeneic cell transplantation. Scaffold-free iPSC-derived cardaic tissue sheets of C57BL/6 mouse origin were transplanted into the cardiac surface of syngeneic C57BL/6 mice and allogeneic BALB/c mice with or without tacrolimus injection. Syngeneic mice and tacrolimus-injected immunosuppressed allogeneic mice formed teratocarcinomas with identical phenotypes, characteristic, and time courses, as assessed by imaging tools including 18F-fluorodeoxyglucose-positron emission tomography. In contrast, temporarily immunosuppressed allogeneic mice, following cessation of tacrolimus injection displayed diminished progression of the teratocarcinoma, accompanied by an accumulation of CD4/CD8-positive T cells, and finally achieved complete elimination of the teratocarcinoma. Our results indicated that malignant teratocarcinomas arising from induced pluripotent stem cell-derived cardiac tissue constructs provoked T cell-related host immune rejection to arrest tumour growth in murine allogeneic transplantation models.
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Affiliation(s)
- Ai Kawamura
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Shigeru Miyagawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Satsuki Fukushima
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Takuji Kawamura
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Noriyuki Kashiyama
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Emiko Ito
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Tadashi Watabe
- Department of Nuclear Medicine and Tracer Kinetics, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Shigeo Masuda
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Koichi Toda
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Jun Hatazawa
- Department of Nuclear Medicine and Tracer Kinetics, Osaka University Graduate School of Medicine, Suita, Osaka, Japan.,Immunology Frontier Research Center, Osaka University, Suita, Osaka, Japan
| | - Eiichi Morii
- Department of Diagnostic Pathology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Yoshiki Sawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
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Takahashi M, Nishida S, Nakamura M, Kobayashi M, Matsui K, Ito E, Usui A, Inoue Y. The prevalence and risk factor of augmentation in Japanese patients with restless legs syndrome receiving pramipexole treatment. Sleep Med 2015. [DOI: 10.1016/j.sleep.2015.02.1430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Kawamura T, Miyagawa S, Fukushima S, Kashiyama N, Kawamura A, Ito E, Saito A, Maeda A, Eguchi H, Toda K, Miyagawa S, Okuyama H, Sawa Y. Structural Changes in N-Glycans on Induced Pluripotent Stem Cells Differentiating Toward Cardiomyocytes. Stem Cells Transl Med 2015; 4:1258-64. [PMID: 26378261 DOI: 10.5966/sctm.2015-0029] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Accepted: 07/08/2015] [Indexed: 12/28/2022] Open
Abstract
UNLABELLED Cell-surface glycans vary widely, depending on cell properties. Previously, we reported that the pattern of N-glycan expression on murine induced pluripotent stem cells (iPSCs) changed toward that of the cardiac tissue during cardiomyogenic differentiation. In this study, N-glycans were isolated from human iPSCs, iPSC-derived cardiomyocytes (iPSC-CMs), and human cardiomyocytes (hCMCs). Their structures were analyzed by a mapping technique based on high-performance liquid chromatography elution positions and matrix-assisted laser desorption/ionization time-of-flight mass-spectrometric data. Of 52 isolated N-glycans, the structures of 38 were clearly identified. In addition, 11 structures were partially identified because the binding style and fucose binding site at the nonreduced terminal could not be identified. Quantitation of each type of N-glycan, based on the terminal glycosylation process, revealed that the exposed N-acetylglucosamine (GlcNAc) and the nonreduced terminal fucose types decreased, whereas the exposed galactose or the α2-3 NeuAc types increased in the iPSCs during cardiomyogenic differentiation. However, the bisecting GlcNAc and the triantennary structures were found in relative abundance in the iPSC-CMs in comparison with hCMCs or iPSCs. Expression of MGAT3, a glycosyltransferase-encoding gene that produces the bisecting GlcNAc structures, was higher in iPSCs and iPSC-CMs than in hCMCs. These findings will prove useful in understanding the directional precision of cardiomyogenic differentiation in vitro. SIGNIFICANCE This study focused on N-glycans produced in human induced pluripotent stem cells (iPSCs) and iPSC-derived cardiomyocytes to investigate their change on cardiomyogenic differentiation in vitro. This shows that the expression pattern of N-glycans in human iPSCs changed toward the pattern observed in human cardiomyocytes upon cardiomyogenic differentiation. Structural differences were also observed in the bisecting N-acetylglucosamine and the triantennary structures upon cardiomyogenic differentiation. The findings of this study will help in understanding the directional precision of cardiomyogenic differentiation in vitro.
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Affiliation(s)
- Takuji Kawamura
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Shigeru Miyagawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Satsuki Fukushima
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Noriyuki Kashiyama
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Ai Kawamura
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Emiko Ito
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Atsuhiro Saito
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Akira Maeda
- Department of Pediatric Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Hiroshi Eguchi
- Department of Pediatric Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Koichi Toda
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Shuji Miyagawa
- Department of Pediatric Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Hiroomi Okuyama
- Department of Pediatric Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Yoshiki Sawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
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35
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Imai Y, Isoda KI, Ito E, Hakamada A, Yamanishi K, Mizutani H. Primary Cutaneous Follicle Center Cell Lymphoma of the Scalp Successfully Treated with Anti CD20 Monoclonal Antibody and CHOP Combination Therapy with No Subsequent Permanent Loss of Hair. J Dermatol 2014; 30:683-8. [PMID: 14578559 DOI: 10.1111/j.1346-8138.2003.tb00458.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2002] [Accepted: 05/27/2003] [Indexed: 11/30/2022]
Abstract
We present a primary cutaneous follicle center cell lymphoma (PCFCCL) patient who was successfully treated with Rituximab, a new anti-CD20 monoclonal antibody. A thirty-two-year-old male developed two asymptomatic tumors on the scalp. Histopathologically, the tumors were composed of diffuse and nodular infiltration of centrocytes and centroblasts. Immunohistopathologically, the tumor cells stained positively with anti-CD20 antibody and anti-kappa antibody, but not with anti-CD5, anti-CD10, or anti-Bcl-2 antibody. Radiation therapy is effective in treating PCFCCL; however, it usually results in the permanent loss of hair. This patient was treated with Rituximab and CHOP, and achieved a complete remission. He has had no recurrence in more than 12 months and no permanent loss of hair on the scalp.
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Affiliation(s)
- Yasutomo Imai
- Department of Dermatology, Mie University, Faculty of Medicine, Tsu, Japan
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Ito E, Ozawa S, Kijima H, Kazuno A, Miyako H, Nishi T, Chino O, Shimada H, Tanaka M, Inoue S, Inokuchi S, Makuuchi H. Clinicopathological significance of laminin-5γ2 chain expression in superficial esophageal cancer. Dis Esophagus 2014; 27:463-9. [PMID: 22978811 DOI: 10.1111/j.1442-2050.2012.01416.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The glycoprotein laminin 5γ2 chain (LN-5γ2) has recently become a focus of increased interest and investigation as a marker of invasion in gastrointestinal malignancies. We investigated the significance of LN-5γ2 expression as a prognostic factor in superficial esophageal cancer. The study population consisted of 87 patients who had undergone a transthoracic esophagectomy and three-field lymphadenectomy for the treatment of superficial esophageal cancer at Tokai University Hospital. Formalin-fixed, paraffin-embedded sections of the resected specimens were examined using immunohistochemical staining and hematoxylin and eosin staining to assess the correlations between the LN-5γ2 expression pattern and the clinicopathological factors (age, sex, T-factor, N-factor, ly-factor, v-factor, degree of differentiation, infiltrative growth pattern, tumor node metastasis classification of malignant tumors [TNM] stage, etc.) and the patient outcome. The expression pattern of LN-5γ2 was classified into an extracellular type (E type), characterized by the staining of extracellular matrix such as the basement membrane and the stroma (31 cases, 35.6%), and a cytoplasmic type (C type), characterized by the staining of the cytoplasm in the cancer cells (56 cases, 64.6%). The expression pattern was not correlated with any of the clinicopathological factors that were assessed. However, univariate analyses of the survival analysis data showed that the N-factor (P = 0.011), TNM stage (P = 0.011), and LN-5γ2 C type (P = 0.017) were prognostic factors. A multivariate analysis revealed that the N-factor (P = 0.049) and LN-5γ2 C type (P = 0.048) were prognostic factors. In the survival analysis, a univariate analysis of the 75 T1b cases also showed that the N-factor (P = 0.048), TNM stage (P = 0.048), and LN-5γ2 C type (P = 0.029) were prognostic factors, while a multivariate analysis showed that the LN-5γ2 C type (P = 0.035) was a prognostic factor. The C type expression of LN-5γ2, i.e. confined to the cytoplasm, was correlated with an unfavorable outcome among the patients with superficial esophageal cancer in the present series. Observation of the LN-5γ2 expression pattern may be useful for the diagnosis of highly malignant tumors.
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Affiliation(s)
- E Ito
- Department of Gastroenterological Surgery, Tokai University School of Medicine, Isehara, Kanagawa, Japan
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Sakurai M, Kunimoto H, Watanabe N, Fukuchi Y, Yuasa S, Yamazaki S, Nishimura T, Sadahira K, Fukuda K, Okano H, Nakauchi H, Morita Y, Matsumura I, Kudo K, Ito E, Ebihara Y, Tsuji K, Harada Y, Harada H, Okamoto S, Nakajima H. Impaired hematopoietic differentiation of RUNX1-mutated induced pluripotent stem cells derived from FPD/AML patients. Leukemia 2014; 28:2344-54. [DOI: 10.1038/leu.2014.136] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 03/30/2014] [Accepted: 04/09/2014] [Indexed: 01/10/2023]
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38
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Hata M, Koike I, Wada H, Miyagi E, Kasuya T, Kaizu H, Matsui T, Mukai Y, Ito E, Inoue T. Radiation therapy for extramammary Paget's disease: treatment outcomes and prognostic factors. Ann Oncol 2014; 25:291-297. [DOI: 10.1093/annonc/mdt478] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
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39
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Ikeda F, Watanabe S, Aizawa-Yashiro T, Tsuruga K, Ito E, Tanaka H. Single dose of rituximab for pediatric-onset refractory systemic lupus erythematosus. Lupus 2013; 22:1541-3. [DOI: 10.1177/0961203313502111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- F Ikeda
- Department of Pediatrics, Hirosaki University Hospital
| | - S Watanabe
- Department of Pediatrics, Hirosaki University Hospital
| | | | - K Tsuruga
- Department of Pediatrics, Hirosaki University Hospital
| | - E Ito
- Department of Pediatrics, Hirosaki University Hospital
| | - H Tanaka
- Department of Pediatrics, Hirosaki University Hospital
- Department of School Health Science, Faculty of Education, Hirosaki University, Hirosaki, Japan
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Kawamura M, Miyagawa S, Fukushima S, Saito A, Miki K, Ito E, Sougawa N, Kawamura T, Daimon T, Shimizu T, Okano T, Toda K, Sawa Y. Enhanced survival of transplanted human induced pluripotent stem cell-derived cardiomyocytes by the combination of cell sheets with the pedicled omental flap technique in a porcine heart. Circulation 2013; 128:S87-94. [PMID: 24030425 DOI: 10.1161/circulationaha.112.000366] [Citation(s) in RCA: 150] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Transplantation of cardiomyocytes that are derived from human induced pluripotent stem cell-derived cardiomyocytes (hiPS-CMs) shows promise in generating new functional myocardium in situ, whereas the survival and functionality of the transplanted cells are critical in considering this therapeutic impact. Cell-sheet method has been used to transplant many functional cells; however, potential ischemia might limit cell survival. The omentum, which is known to have rich vasculature, is expected to be a source of blood supply. We hypothesized that transplantation of hiPS-CM cell sheets combined with an omentum flap may deliver a large number of functional hiPS-CMs with enhanced blood supply. METHODS AND RESULTS Retrovirally established human iPS cells were treated with Wnt signaling molecules to induce cardiomyogenic differentiation, followed by superparamagnetic iron oxide labeling. Cell sheets were created from the magnetically labeled hiPS-CMs using temperature-responsive dishes and transplanted to porcine hearts with or without the omentum flap (n=8 each). Two months after transplantation, the survival of superparamagnetic iron oxide-labeled hiPS-CMs, assessed by MRI, was significantly greater in mini-pigs with the omentum than in those without it; histologically, vascular density in the transplanted area was significantly greater in mini-pigs with the omentum than in those without it. The transplanted tissues contained abundant cardiac troponin T-positive cells surrounded by vascular-rich structures. CONCLUSIONS The omentum flap enhanced the survival of hiPS-CMs after transplantation via increased angiogenesis, suggesting that this strategy is useful in clinical settings. The combination of hiPS-CMs and the omentum flap may be a promising technique for the development of tissue-engineered vascular-rich new myocardium in vivo.
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Affiliation(s)
- Masashi Kawamura
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan (M.K., S.M., S.F., K.M., E.I., N.S., T.K., K.T., Y.S.); Medical Center for Translational Research, Osaka University Hospital, Suita, Osaka, Japan (A.S.); Department of Biostatistics, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan (T.D.); Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Tokyo, Japan (T.S., T.O.)
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Abstract
The neural circuitry comprising the central pattern generator (CPG) that drives feeding behavior in the great pond snail (Lymnaea stagnalis (L., 1758)) has been worked out. Because the feeding behavior undergoes associative learning and long-term memory (LTM) formation, it provides an excellent opportunity to study the causal neuronal mechanisms of these two processes. In this review, we explore some of the possible causal neuronal mechanisms of associative learning of conditioned taste aversion (CTA) and its subsequent consolidation processes into LTM in L. stagnalis. In the CTA training procedure, a sucrose solution, which evokes a feeding response, is used as the conditioned stimulus (CS) and a potassium chloride solution, which causes a withdrawal response, is used as the unconditioned stimulus (US). The pairing of the CS–US alters both the feeding response of the snail and the function of a pair of higher order interneurons in the cerebral ganglia. Following the acquisition of CTA, the polysynaptic inhibitory synaptic input from the higher order interneurons onto the feeding CPG neurons is enhanced, resulting in suppression of the feeding response. These changes in synaptic efficacy are thought to constitute a “memory trace” for CTA in L. stagnalis.
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Affiliation(s)
- E. Ito
- Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University, 1314-1 Shido, Sanuki 769-2193, Japan
| | - S. Kojima
- Sandler Neurosciences Center, University of California, San Francisco, 675 Nelson Rising Lane 518, San Francisco, CA 94143-0444, USA
| | - K. Lukowiak
- Hotchkiss Brain Institute, University of Calgary, Calgary, AB T2N 4N1, Canada
| | - M. Sakakibara
- School of High-Technology for Human Welfare, Tokai University, 317 Nishino, Numazu 410-0321, Japan
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Hama A, Muramatsu H, Ito M, Tsuchida M, Takahashi Y, Kobayashi R, Ito E, Yabe H, Ohga S, Ohara A, Kojima S. P-149 Comparison of long-term outcomes between children with aplastic anemia and RCC who received immunosuppressive therapy with ATG and cyclosporine. Leuk Res 2013. [DOI: 10.1016/s0145-2126(13)70197-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Yu T, Miyagawa S, Miki K, Saito A, Fukushima S, Higuchi T, Kawamura M, Kawamura T, Ito E, Kawaguchi N, Sawa Y, Matsuura N. In Vivo Differentiation of Induced Pluripotent Stem Cell-Derived Cardiomyocytes. Circ J 2013; 77:1297-306. [DOI: 10.1253/circj.cj-12-0977] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Tao Yu
- Division of Cardiovascular Surgery, Department of Surgery, Osaka University Graduate School of Medicine
- Department of Molecular Pathology, Osaka University Graduate School of Medicine and Health Science
| | - Shigeru Miyagawa
- Division of Cardiovascular Surgery, Department of Surgery, Osaka University Graduate School of Medicine
| | - Kenji Miki
- Division of Cardiovascular Surgery, Department of Surgery, Osaka University Graduate School of Medicine
| | - Atsuhiro Saito
- Medical Center for Translational Research, Osaka University Hospital
| | - Satsuki Fukushima
- Division of Cardiovascular Surgery, Department of Surgery, Osaka University Graduate School of Medicine
| | - Takahiro Higuchi
- Division of Cardiovascular Surgery, Department of Surgery, Osaka University Graduate School of Medicine
| | - Masashi Kawamura
- Division of Cardiovascular Surgery, Department of Surgery, Osaka University Graduate School of Medicine
| | - Takuji Kawamura
- Division of Cardiovascular Surgery, Department of Surgery, Osaka University Graduate School of Medicine
| | - Emiko Ito
- Division of Cardiovascular Surgery, Department of Surgery, Osaka University Graduate School of Medicine
| | - Naomasa Kawaguchi
- Department of Molecular Pathology, Osaka University Graduate School of Medicine and Health Science
| | - Yoshiki Sawa
- Division of Cardiovascular Surgery, Department of Surgery, Osaka University Graduate School of Medicine
| | - Nariaki Matsuura
- Department of Molecular Pathology, Osaka University Graduate School of Medicine and Health Science
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Ito E, Morooka K, Ujike O, Katsura T. Reactions between molten iron and silicate melts at high pressure: Implications for the chemical evolution of Earth's core. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/94jb02645] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Abstract
DNA endoreplication is the DNA synthesis without cell division, resulting in the generation of a nucleus containing a larger amount of genomic DNA compared to a normal diploid genome. There are many such giant neurons in the molluscan brain that are generated as a result of repeated endoreplication. However, it has been controversial whether the endoreplication is the whole genome replication (polyploidy) or the local amplification of the genes that are necessary for the neuron's function (polyteny/polysomy). Here in this study, we investigated these two possibilities by (1) immunohistochemical analysis of the distribution of 5'-bromodeoxyuridine incorporated into the nuclei of the brain neurons, and by (2) quantitative genomic PCR directed to two different genes expressed in specific brain regions. Our data supported the view that the DNA endoreplication is the whole genome replication rather than the local amplification of a specific genomic region.
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Affiliation(s)
- R Matsuo
- Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University, 1314-1 Shido, Sanuki, Kagawa 769-2193, Japan.
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Abstract
A honeybee informs her nestmates of the location of a flower by doing a waggle dance. The waggle dance encodes both the direction of and distance to the flower from the hive. To reveal how the waggle dance benefits the colony, we created a Markov model of bee foraging behavior and performed simulation experiments by incorporating the biological parameters that we obtained from our own observations of real bees as well as from the literature. When two feeders were each placed 400 m away from the hive in different directions, a virtual colony in which honeybees danced and correctly transferred information (a normal, real bee colony) made significantly greater numbers of successful visits to the feeders compared to a colony with inaccurate information transfer. Howerer, when five feeders were each located 400 m from the hive, the inaccurate information transfer colony performed better than the normal colony. These results suggest that dancing's ability to communicate accurate information depends on the number of feeders. Furthermore, because non-dancing colonies always made significantly fewer visits than those two colonies, we concluded that dancing behavior is beneficial for hives' ability to visit food sources.
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Affiliation(s)
- R Okada
- Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University, Sanuki, Kagawa 769-2193, Japan.
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Abstract
The pond snail, Lymnaea stagnalis, is capable of learning conditioned taste aversion (CTA) and consolidating this CTA into long-term memory (LTM). The DNA microarray experiments showed that some of molluscan insulin-related peptides (MIPs) were up-regulated in snails exhibiting CTA-LTM. On the other hand, the electrophysiological experiments showed that application of secretions from the MIPs-containing cells evoked long-term potentiation (LTP) at the synapses between the cerebral giant cell (a key interneuron for CTA) and the B1 motoneuron (a buccal motoneuron). We thus hypothesized that MIPs and MIP receptors play an important role at the synapses, probably underlying the CTA-LTM consolidation process. To examine this hypothesis, we applied the antibody, which recognizes the binding site of mammalian insulin receptors and is thought to cross-react MIP receptors, to the Lymnaea CNS. Our present data showed that an application of the antibody for insulin receptors to the isolated CNS blocked LTP, and that an injection of the antibody into the Lymnaea abdominal cavity inhibited LTM consolidation, but not CTA formation.
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Affiliation(s)
- E Ito
- Laboratory of Functional Biology, Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University, Sanuki, Japan.
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Abstract
We examined GABAergic modulation on "slow" oscillation (<1.0 Hz) of the procerebrum in the terrestrial mollusk, Limax valentianus. Short application of GABA-receptor agonists slightly increased the frequency of a periodic oscillation in the procerebrum, whereas persistent application decreased it. GABA-receptor antagonists decreased the oscillatory frequency. The GABA-like immunoreactivities were found in the neuropil and the cell body layers of the procerebrum. Because GABAergic inhibition is known to be essential for the generation of "fast" synchronous neuronal oscillation in the CNSs in othre many animals, our present findings are first evidence suggesting that GABA modulates 'slow' oscillation in the CNS.
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Affiliation(s)
- S Kobayashi
- Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University, 1314-1 Shido, Sanuki, Kagawa 769-2193, Japan.
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Sesso A, Belizário JE, Marques MM, Higuchi ML, Schumacher RI, Colquhoun A, Ito E, Kawakami J. Mitochondrial swelling and incipient outer membrane rupture in preapoptotic and apoptotic cells. Anat Rec (Hoboken) 2012; 295:1647-59. [PMID: 22907871 PMCID: PMC3549475 DOI: 10.1002/ar.22553] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2010] [Revised: 07/03/2012] [Accepted: 07/16/2012] [Indexed: 12/27/2022]
Abstract
Outer mitochondrial membrane (OMM) rupture was first noted in isolated mitochondria in which the inner mitochondrial membrane (IMM) had lost its selective permeability. This phenomenon referred to as mitochondrial permeability transition (MPT) refers to a permeabilized inner membrane that originates a large swelling in the mitochondrial matrix, which distends the outer membrane until it ruptures. Here, we have expanded previous electron microscopic observations that in apoptotic cells, OMM rupture is not caused by a membrane stretching promoted by a markedly swollen matrix. It is shown that the widths of the ruptured regions of the OMM vary from 6 to 250 nm. Independent of the perforation size, herniation of the mitochondrial matrix appeared to have resulted in pushing the IMM through the perforation. A large, long focal herniation of the mitochondrial matrix, covered with the IMM, was associated with a rupture of the OMM that was as small as 6 nm. Contextually, the collapse of the selective permeability of the IMM may precede or follow the release of the mitochondrial proteins of the intermembrane space into the cytoplasm. When the MPT is a late event, exit of the intermembrane space proteins to the cytoplasm is unimpeded and occurs through channels that transverse the outer membrane, because so far, the inner membrane is impermeable. No channel within the outer membrane can expose to the cytoplasm a permeable inner membrane, because it would serve as a conduit for local herniation of the mitochondrial matrix. Anat Rec, 2012. © 2012 Wiley Periodicals, Inc.
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Affiliation(s)
- A Sesso
- Setor de Biologia Estrutural, Laboratório de Imunopatologia, Instituto de Medicina Tropical, Universidade de São Paulo, São Paulo, Brazil.
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Tamura T, Ito E, Watanabe T, Matsumoto Y, Ando H, Oda K, Kishida Y, Ichikawa M, Sato T, Sakuma J, Saito K. Skull Base Reconstruction Using Various Types of Galeal Flaps. Skull Base Surg 2012. [DOI: 10.1055/s-0032-1314019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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