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Fang M, Li T, Wu Z. WTAP-MEDIATED M6A MODIFICATION OF KLF6 AGGRAVATES HYPOXIA/REOXYGENATION-INDUCED HUMAN CARDIOMYOCYTE INJURY. Shock 2024; 62:201-207. [PMID: 38662610 DOI: 10.1097/shk.0000000000002373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
ABSTRACT Background: Myocardial infarction (MI) is a severe condition that typically results from the ischemia and necrosis of heart muscle. Kruppel-like factor 6 (KLF6) can aggravate myocardial ischemia/reperfusion injury. This work aims to reveal its role and mechanism in hypoxia/reoxygenation (H/R)-induced cardiomyocyte injury. Methods: Human cardiomyocyte (AC16) was exposed to hypoxic treatment to mimic MI-like cell injury. mRNA expression levels of KLF6 and WT1-associated protein (WTAP) were detected by quantitative real-time polymerase chain reaction. Protein expression was detected by western blotting assay. Cell viability was assessed by CCK-8 assay. Cell apoptosis and cell cycle were investigated by flow cytometry. Enzyme-linked immunosorbent assays were conducted to detect IL-1β, TNF-α and IL-6 levels. Fe 2+ colorimetric assay kit was used to detect Fe 2+ level. MDA Content Assay Kit was used to detect MDA level. Cellular ROS Assay kit was applied to assess ROS level. The association of KLF6 and WTAP was identified by RNA immunoprecipitation assay and dual-luciferase reporter assay. Results: KLF6 and WTAP expression at mRNA and protein levels were significantly upregulated in serum samples of MI patients and H/R-induced AC16 cells when compared with control groups. KLF6 silencing attenuated H/R-induced AC16 cell apoptosis, inflammatory response, oxidative stress, and ferroptosis. Additionally, WTAP stabilized KLF6 mRNA by regulating its m6A modification. Furthermore, WTAP knockdown rescued H/R-induced AC16 cell apoptosis, inflammatory response, oxidative stress, and ferroptosis by decreasing KLF6 expression. Conclusion: WTAP-mediated m6A modification of KLF6 aggravated hypoxia/reoxygenation-induced apoptosis, inflammatory response, oxidative stress, and ferroptosis of human cardiomyocytes, providing a therapeutic strategy for MI.
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Affiliation(s)
- Mingcheng Fang
- Department of Cardiology, Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
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Santos SC, Custódio CA, Mano JF. Photocrosslinkable microgels derived from human platelet lysates: injectable biomaterials for cardiac cell culture. Biomater Sci 2024; 12:3112-3123. [PMID: 38738267 DOI: 10.1039/d3bm01933k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
Cardiovascular diseases are a major global cause of morbidity and mortality, and they are often characterized by cardiomyocytes dead that ultimately leads to myocardial ischemia (MI). This condition replaces functional cardiac tissue with fibrotic scar tissue compromising heart function. Injectable systems for the in situ delivery of cells or molecules to assist during tissue repair have emerged as promising approaches for tissue engineering, particularly for myocardial repair. Methacryloyl platelet lysates (PLMA) have been employed for constructing full human-based 3D cell culture matrices and demonstrated potential for xeno-free applications. In this study, we propose using PLMA to produce microparticles (MPs) serving as anchors for cardiac and endothelial cells and ultimately as injectable systems for cardiac tissue repair. The herein reported PLMA MPs were produced by droplet microfluidics and showed great properties for cell attachment. More importantly, it is possible to show the capacity of PLMA MPs to serve as cell microcarriers even in the absence of animal-derived serum supplementation in the culture media.
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Affiliation(s)
- Sara C Santos
- Department of Chemistry, CICECO - Aveiro Institute of Materials, University of Aveiro, Portugal.
| | - Catarina A Custódio
- Department of Chemistry, CICECO - Aveiro Institute of Materials, University of Aveiro, Portugal.
| | - João F Mano
- Department of Chemistry, CICECO - Aveiro Institute of Materials, University of Aveiro, Portugal.
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Guan H, Chen Y, Liu X, Huang L. Research and application of hydrogel-encapsulated mesenchymal stem cells in the treatment of myocardial infarction. Colloids Surf B Biointerfaces 2024; 239:113942. [PMID: 38729022 DOI: 10.1016/j.colsurfb.2024.113942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 04/19/2024] [Accepted: 05/02/2024] [Indexed: 05/12/2024]
Abstract
Myocardial infarction (MI) stands out as a highly lethal disease that poses a significant threat to global health. Worldwide, heart failure resulting from MI remains a leading cause of human mortality. Mesenchymal stem cell (MSC) therapy has emerged as a promising therapeutic approach, leveraging its intrinsic healing properties. Nevertheless, pervasive issues, including a low cell retention rate, suboptimal survival rate, and incomplete differentiation of MSCs, present formidable challenges for further research. The introduction and advancement of biomaterials have offered a novel avenue for the exploration of MSC therapy in MI, marking considerable progress thus far. Notably, hydrogels, among the representative biomaterials, have garnered extensive attention within the biomedical field. This review delves into recent advancements, specifically focusing on the application of hydrogels to augment MSC therapy for cardiac tissue regeneration in MI.
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Affiliation(s)
- Haien Guan
- Center of Stem Cell and Regenerative Medicine, Gaozhou People's Hospital, Gaozhou 525200, China
| | - Yuehua Chen
- Center of Stem Cell and Regenerative Medicine, Gaozhou People's Hospital, Gaozhou 525200, China
| | - Xuanyu Liu
- Center of Stem Cell and Regenerative Medicine, Gaozhou People's Hospital, Gaozhou 525200, China
| | - Li Huang
- Center of Stem Cell and Regenerative Medicine, Gaozhou People's Hospital, Gaozhou 525200, China.
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Bai Y, Chen Y, Jin Q, Deng C, Xu L, Huang T, He S, Fu Y, Qiu J, Xu J, Gao T, Wu W, Lv Q, Yang Y, Zhang L, Xie M, Dong X, Wang J. Platelet membrane-derived biomimetic microbubbles with enhanced targeting ability for the early detection of myocardial ischemia-reperfusion injury. Colloids Surf B Biointerfaces 2024; 234:113680. [PMID: 38101143 DOI: 10.1016/j.colsurfb.2023.113680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 11/19/2023] [Accepted: 11/29/2023] [Indexed: 12/17/2023]
Abstract
Myocardial ischemia-reperfusion injury (MIRI) is a widely recognized cardiovascular disease that significantly impacts the prognosis of patients undergoing myocardial infarction recanalization. This condition can be fatal and involves complex pathophysiological mechanisms. Early diagnosis of MIRI is crucial to minimize myocardial damage and reducing mortality. Based on the inherent relationship between platelets and MIRI, we developed biomimetic microbubbles coated with platelet membrane (MB-pla) for early identification of MIRI. The MB-pla were prepared through a recombination process involving platelet membrane obtained from rat whole blood and phospholipids, blended in appropriate proportions. By coating the microbubbles with platelet membrane, MB-pla acquired various adhesion molecules, thereby gaining the capability to selectively adhere to damaged endothelial cells in the context of MIRI. In vitro experiments demonstrated that MB-pla exhibited remarkable targeting characteristics, particularly toward type IV collagen and human umbilical vein endothelial cells that had been injured through hypoxia/reoxygenation procedures. In a rat model of MIRI, the signal intensity produced by MB-pla was notably higher than that of control microbubbles. These findings were consistent with results obtained from fluorescence imaging of isolated hearts and immunofluorescence staining of tissue sections. In conclusion, MB-pla has great potential as a non-invasive early detection method for MIRI. Furthermore, this approach can potentially find application in other conditions involving endothelial injury in the future.
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Affiliation(s)
- Ying Bai
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Clinical Research Center for Medical Imaging in Hubei Province, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Yihan Chen
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Clinical Research Center for Medical Imaging in Hubei Province, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China; Department of Ultrasonography, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Qiaofeng Jin
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Clinical Research Center for Medical Imaging in Hubei Province, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Cheng Deng
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Clinical Research Center for Medical Imaging in Hubei Province, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Lingling Xu
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Clinical Research Center for Medical Imaging in Hubei Province, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Tian Huang
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Clinical Research Center for Medical Imaging in Hubei Province, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Shukun He
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Clinical Research Center for Medical Imaging in Hubei Province, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Yanan Fu
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Clinical Research Center for Medical Imaging in Hubei Province, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Jiani Qiu
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Clinical Research Center for Medical Imaging in Hubei Province, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Jia Xu
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Clinical Research Center for Medical Imaging in Hubei Province, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Tang Gao
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Clinical Research Center for Medical Imaging in Hubei Province, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Wenqian Wu
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Clinical Research Center for Medical Imaging in Hubei Province, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Qing Lv
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Clinical Research Center for Medical Imaging in Hubei Province, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Yali Yang
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Clinical Research Center for Medical Imaging in Hubei Province, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Li Zhang
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Clinical Research Center for Medical Imaging in Hubei Province, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China; Shenzhen Huazhong University of Science and Technology Research Institute, China
| | - Mingxing Xie
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Clinical Research Center for Medical Imaging in Hubei Province, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China; Shenzhen Huazhong University of Science and Technology Research Institute, China
| | - Xiaoqiu Dong
- Department of Ultrasonography, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China.
| | - Jing Wang
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Clinical Research Center for Medical Imaging in Hubei Province, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China.
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Zheng L, Shi W, Liu B, Duan B, Sorgen P. Evaluation of Tyrosine Kinase Inhibitors Loaded Injectable Hydrogels for Improving Connexin43 Gap Junction Intercellular Communication. ACS APPLIED MATERIALS & INTERFACES 2024; 16:1985-1998. [PMID: 38175743 PMCID: PMC11061860 DOI: 10.1021/acsami.3c10923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
Myocardial infarction (MI) is one of the leading causes of death in the developed world, and the loss of cardiomyocytes plays a critical role in the pathogenesis of heart failure. Implicated in this process is a decrease in gap junction intercellular communication due to remodeling of Connexin43 (Cx43). We previously identified that intraperitoneal injection of the Pyk2 inhibitor PF4618433 reduced infarct size, maintained Cx43 at the intercalated disc in left ventricle hypertrophic myocytes, and improved cardiac function in an MI animal model of heart failure. With the emergence of injectable hydrogels as a therapeutic toward the regeneration of cardiac tissue after MI, here, we provide proof of concept that the release of tyrosine kinase inhibitors from hydrogels could have beneficial effects on cardiomyocytes. We developed an injectable hydrogel consisting of thiolated hyaluronic acid and P123-maleimide micelles that can incorporate PF4618433 as well as the Src inhibitor Saracatinib and achieved sustained release (of note, Src activates Pyk2). Using neonatal rat ventricular myocytes in the presence of a phorbol ester, endothelin-1, or phenylephrine to stimulate cardiac hypertrophy, the release of PF4618433 from the hydrogel had the same ability to decrease Cx43 tyrosine phosphorylation and maintain Cx43 localization at the plasma membrane as when directly added to the growth media. Additional beneficial effects included decreases in apoptosis, the hypertrophic marker atrial natriuretic peptide (ANP), and serine kinases upregulated in hypertrophy. Finally, the presence of both PF4618433 and Saracatinib further decreased the level of ANP and apoptosis than each inhibitor alone, suggesting that a combinatorial approach may be most beneficial. These findings provide the groundwork to test if tyrosine kinase inhibitor release from hydrogels will have a beneficial effect in an animal model of MI-induced heart failure.
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Affiliation(s)
- Li Zheng
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Wen Shi
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Bo Liu
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Bin Duan
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Department of Surgery, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Paul Sorgen
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA
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