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Sun D, Chang Q, Lu F. Immunomodulation in diabetic wounds healing: The intersection of macrophage reprogramming and immunotherapeutic hydrogels. J Tissue Eng 2024; 15:20417314241265202. [PMID: 39071896 PMCID: PMC11283672 DOI: 10.1177/20417314241265202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 06/12/2024] [Indexed: 07/30/2024] Open
Abstract
Diabetic wound healing presents a significant clinical challenge due to the interplay of systemic metabolic disturbances and local inflammation, which hinder the healing process. Macrophages undergo a phenotypic shift from M1 to M2 during wound healing, a transition pivotal for effective tissue repair. However, in diabetic wounds, the microenvironment disrupts this phenotypic polarization, perpetuating inflammation, and impeding healing. Reprograming macrophages to restore their M2 phenotype offers a potential avenue for modulating the wound immune microenvironment and promoting healing. This review elucidates the mechanisms underlying impaired macrophage polarization toward the M2 phenotype in diabetic wounds and discusses novel strategies, including epigenetic and metabolic interventions, to promote macrophage conversion to M2. Hydrogels, with their hydrated 3D cross-linked structure, closely resemble the physiological extracellular matrix and offer advantageous properties such as biocompatibility, tunability, and versatility. These characteristics make hydrogels promising candidates for developing immunomodulatory materials aimed at addressing diabetic wounds. Understanding the role of hydrogels in immunotherapy, particularly in the context of macrophage reprograming, is essential for the development of advanced wound care solutions. This review also highlights recent advancements in immunotherapeutic hydrogels as a step toward precise and effective treatments for diabetic wounds.
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Affiliation(s)
- Dan Sun
- Department of Plastic and Aesthetic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Qiang Chang
- Department of Plastic and Aesthetic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Feng Lu
- Department of Plastic and Aesthetic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
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Robinson EL, Ameri P, Delrue L, Vanderheyden M, Bartunek J, Altieri P, Heymans S, Heggermont WA. Differential expression of epigenetic modifiers in early and late cardiotoxic heart failure reveals DNA methylation as a key regulator of cardiotoxicity. Front Cardiovasc Med 2023; 10:884174. [PMID: 36970338 PMCID: PMC10034031 DOI: 10.3389/fcvm.2023.884174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 02/20/2023] [Indexed: 03/11/2023] Open
Abstract
BackgroundAnthracycline-induced cardiotoxicity is a well-known serious clinical entity. However, detailed mechanistic insights on how short-term administration leads to late and long-lasting cardiotoxicity, are still largely undiscovered. We hypothesize that chemotherapy provokes a memory effect at the level of epigenomic DNA modifications which subsequently lead to cardiotoxicity even years after cessation of chemotherapy.MethodsWe explored the temporal evolution of epigenetic modifiers in early and late cardiotoxicity due to anthracyclines by means of RNA-sequencing of human endomyocardial left ventricular biopsies and mass spectrometry of genomic DNA. Based on these findings, validation of differentially regulated genes was obtained by performing RT-qPCR. Finally, a proof-of-concept in vitro mechanistic study was performed to dissect some of the mechanistic aspects of epigenetic memory in anthracycline-induced cardiotoxicity.ResultsCorrelation of gene expression between late and early onset cardiotoxicity revealed an R2 value of 0.98, demonstrating a total of 369 differentially expressed genes (DEGs, FDR < 0.05). of which 72% (n = 266) were upregulated, and 28% of genes, (n = 103) downregulated in later as compared to earlier onset cardiotoxicity. Gene ontology analysis showed significant enrichment of genes involved in methyl-CpG DNA binding, chromatin remodeling and regulation of transcription and positive regulation of apoptosis. Differential mRNA expression of genes involved in DNA methylation metabolism were confirmed by RT-qPCR in endomyocardial biopsies. In a larger biopsy cohort, it was shown that Tet2 was more abundantly expressed in cardiotoxicity biopsies vs. control biopsies and vs. non-ischemic cardiomyopathy patients. Moreover, an in vitro study was performed: following short-term doxorubicin treatment, H9c2 cells were cultured and passaged once they reached a confluency of 70%–80%. When compared to vehicle-only treated cells, in doxorubicin-treated cells, three weeks after short term treatment, Nppa, Nppb, Tet1/2 and other genes involved in active DNA demethylation were markedly upregulated. These alterations coincided with a loss of DNA methylation and a gain in hydroxymethylation, reflecting the epigenetic changes seen in the endomyocardial biopsies.ConclusionsShort-term administration of anthracyclines provokes long-lasting epigenetic modifications in cardiomyocytes both in vivo and in vitro, which explain in part the time lapse between the use of chemotherapy and the development of cardiotoxicity and, eventually, heart failure.
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Affiliation(s)
- Emma L. Robinson
- Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, Netherlands
- Division of Cardiology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Pietro Ameri
- Department of Internal Medicine, University of Genova, Genova, Italy
- Cardiothoracic and Vascular Department, Ospedale Policlinico San Martino – IRCCS Italian Cardiovascular Network, Genova, Italy
| | - Leen Delrue
- Cardiovascular Research Center Aalst, Onze-Lieve-Vrouw Hospital Aalst, Aalst, Belgium
| | - Marc Vanderheyden
- Cardiovascular Research Center Aalst, Onze-Lieve-Vrouw Hospital Aalst, Aalst, Belgium
| | - Jozef Bartunek
- Cardiovascular Research Center Aalst, Onze-Lieve-Vrouw Hospital Aalst, Aalst, Belgium
| | - Paola Altieri
- Department of Internal Medicine, University of Genova, Genova, Italy
- Cardiothoracic and Vascular Department, Ospedale Policlinico San Martino – IRCCS Italian Cardiovascular Network, Genova, Italy
| | - Stephane Heymans
- Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, Netherlands
| | - Ward A. Heggermont
- Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, Netherlands
- Cardiovascular Research Center Aalst, Onze-Lieve-Vrouw Hospital Aalst, Aalst, Belgium
- Correspondence: Ward A. Heggermont
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Araki H, Hino S, Anan K, Kuribayashi K, Etoh K, Seko D, Takase R, Kohrogi K, Hino Y, Ono Y, Araki E, Nakao M. LSD1 defines the fiber type-selective responsiveness to environmental stress in skeletal muscle. eLife 2023; 12:84618. [PMID: 36695573 PMCID: PMC9876571 DOI: 10.7554/elife.84618] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 01/12/2023] [Indexed: 01/26/2023] Open
Abstract
Skeletal muscle exhibits remarkable plasticity in response to environmental cues, with stress-dependent effects on the fast-twitch and slow-twitch fibers. Although stress-induced gene expression underlies environmental adaptation, it is unclear how transcriptional and epigenetic factors regulate fiber type-specific responses in the muscle. Here, we show that flavin-dependent lysine-specific demethylase-1 (LSD1) differentially controls responses to glucocorticoid and exercise in postnatal skeletal muscle. Using skeletal muscle-specific LSD1-knockout mice and in vitro approaches, we found that LSD1 loss exacerbated glucocorticoid-induced atrophy in the fast fiber-dominant muscles, with reduced nuclear retention of Foxk1, an anti-autophagic transcription factor. Furthermore, LSD1 depletion enhanced endurance exercise-induced hypertrophy in the slow fiber-dominant muscles, by induced expression of ERRγ, a transcription factor that promotes oxidative metabolism genes. Thus, LSD1 serves as an 'epigenetic barrier' that optimizes fiber type-specific responses and muscle mass under the stress conditions. Our results uncover that LSD1 modulators provide emerging therapeutic and preventive strategies against stress-induced myopathies such as sarcopenia, cachexia, and disuse atrophy.
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Affiliation(s)
- Hirotaka Araki
- Department of Medical Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto UniversityKumamotoJapan
- Department of Metabolic Medicine, Faculty of Life Sciences, Kumamoto UniversityKumamotoJapan
| | - Shinjiro Hino
- Department of Medical Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto UniversityKumamotoJapan
| | - Kotaro Anan
- Department of Medical Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto UniversityKumamotoJapan
| | - Kanji Kuribayashi
- Department of Medical Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto UniversityKumamotoJapan
| | - Kan Etoh
- Department of Medical Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto UniversityKumamotoJapan
| | - Daiki Seko
- Department of Muscle Development and Regeneration, Institute of Molecular Embryology and Genetics, Kumamoto UniversityKumamotoJapan
- Department of Molecular Bone Biology, Graduate School of Biomedical Sciences, Nagasaki UniversityNagasakiJapan
| | - Ryuta Takase
- Department of Medical Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto UniversityKumamotoJapan
| | - Kensaku Kohrogi
- Department of Medical Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto UniversityKumamotoJapan
| | - Yuko Hino
- Department of Medical Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto UniversityKumamotoJapan
| | - Yusuke Ono
- Department of Muscle Development and Regeneration, Institute of Molecular Embryology and Genetics, Kumamoto UniversityKumamotoJapan
| | - Eiichi Araki
- Department of Metabolic Medicine, Faculty of Life Sciences, Kumamoto UniversityKumamotoJapan
| | - Mitsuyoshi Nakao
- Department of Medical Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto UniversityKumamotoJapan
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Abstract
Cellular identity is established through complex layers of genetic regulation, forged over a developmental lifetime. An expanding molecular toolbox is allowing us to manipulate these gene regulatory networks in specific cell types in vivo. In principle, if we found the right molecular tricks, we could rewrite cell identity and harness the rich repertoire of possible cellular functions and attributes. Recent work suggests that this rewriting of cell identity is not only possible, but that newly induced cells can mitigate disease phenotypes in animal models of major human diseases. So, is the sky the limit, or do we need to keep our feet on the ground? This Spotlight synthesises key concepts emerging from recent efforts to reprogramme cellular identity in vivo. We provide our perspectives on recent controversies in the field of glia-to-neuron reprogramming and identify important gaps in our understanding that present barriers to progress.
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Affiliation(s)
- Sydney Leaman
- Centre for Developmental Neurobiology, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London SE1 1UL, UK.,MRC Centre for Neurodevelopmental Disorders, King's College London, London SE1 1UL, UK
| | - Nicolás Marichal
- Centre for Developmental Neurobiology, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London SE1 1UL, UK
| | - Benedikt Berninger
- Centre for Developmental Neurobiology, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London SE1 1UL, UK.,MRC Centre for Neurodevelopmental Disorders, King's College London, London SE1 1UL, UK.,Institute of Physiological Chemistry, University Medical Center of the Johannes Gutenberg University Mainz, Mainz 55128, Germany.,The Francis Crick Institute, London NW1 1AT, UK
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