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Mohindra P, Zhong JX, Fang Q, Cuylear DL, Huynh C, Qiu H, Gao D, Kharbikar BN, Huang X, Springer ML, Lee RJ, Desai TA. Local decorin delivery via hyaluronic acid microrods improves cardiac performance, ventricular remodeling after myocardial infarction. NPJ Regen Med 2023; 8:60. [PMID: 37872196 PMCID: PMC10593781 DOI: 10.1038/s41536-023-00336-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 10/09/2023] [Indexed: 10/25/2023] Open
Abstract
Heart failure (HF) remains a global public health burden and often results following myocardial infarction (MI). Following injury, cardiac fibrosis forms in the myocardium which greatly hinders cellular function, survival, and recruitment, thus severely limits tissue regeneration. Here, we leverage biophysical microstructural cues made of hyaluronic acid (HA) loaded with the anti-fibrotic proteoglycan decorin to more robustly attenuate cardiac fibrosis after acute myocardial injury. Microrods showed decorin incorporation throughout the entirety of the hydrogel structures and exhibited first-order release kinetics in vitro. Intramyocardial injections of saline (n = 5), microrods (n = 7), decorin microrods (n = 10), and free decorin (n = 4) were performed in male rat models of ischemia-reperfusion MI to evaluate therapeutic effects on cardiac remodeling and function. Echocardiographic analysis demonstrated that rats treated with decorin microrods (5.21% ± 4.29%) exhibited significantly increased change in ejection fraction (EF) at 8 weeks post-MI compared to rats treated with saline (-4.18% ± 2.78%, p < 0.001) and free decorin (-3.42% ± 1.86%, p < 0.01). Trends in reduced end diastolic volume were also identified in decorin microrod-treated groups compared to those treated with saline, microrods, and free decorin, indicating favorable ventricular remodeling. Quantitative analysis of histology and immunofluorescence staining showed that treatment with decorin microrods reduced cardiac fibrosis (p < 0.05) and cardiomyocyte hypertrophy (p < 0.05) at 8 weeks post-MI compared to saline control. Together, this work aims to contribute important knowledge to guide rationally designed biomaterial development that may be used to successfully treat cardiovascular diseases.
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Affiliation(s)
- Priya Mohindra
- UC Berkeley-UCSF Graduate Program in Bioengineering, San Francisco, CA, USA
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA, USA
| | - Justin X Zhong
- UC Berkeley-UCSF Graduate Program in Bioengineering, San Francisco, CA, USA
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA, USA
| | - Qizhi Fang
- Division of Cardiology, University of California, San Francisco, San Francisco, CA, USA
| | - Darnell L Cuylear
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA, USA
- Graduate Program in Graduate Program in Oral and Craniofacial Sciences, School of Dentistry, University of California, San Francisco, CA, USA
| | - Cindy Huynh
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA, USA
- Division of Vascular and Endovascular Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Huiliang Qiu
- Division of Cardiology, University of California, San Francisco, San Francisco, CA, USA
| | - Dongwei Gao
- Division of Cardiology, University of California, San Francisco, San Francisco, CA, USA
| | - Bhushan N Kharbikar
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA, USA
| | - Xiao Huang
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA, USA
| | - Matthew L Springer
- Division of Cardiology, University of California, San Francisco, San Francisco, CA, USA
| | - Randall J Lee
- UC Berkeley-UCSF Graduate Program in Bioengineering, San Francisco, CA, USA
- Division of Cardiology, University of California, San Francisco, San Francisco, CA, USA
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA, USA
| | - Tejal A Desai
- UC Berkeley-UCSF Graduate Program in Bioengineering, San Francisco, CA, USA.
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA, USA.
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA, USA.
- School of Engineering, Brown University, Providence, RI, USA.
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Desai T, Mohindra P, Zhong J, Fang Q, Huynh C, Cuylear D, Qiu H, Gao D, Kharbikar B, Huang X, Springer M, Lee R. Local delivery of decorin via hyaluronic acid microrods improves cardiac performance and ventricular remodeling after myocardial infarction. RESEARCH SQUARE 2023:rs.3.rs-2501087. [PMID: 36798333 PMCID: PMC9934754 DOI: 10.21203/rs.3.rs-2501087/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
Heart failure (HF) is a global public health burden and associated with significant morbidity and mortality. HF can result as a complication following myocardial infarction (MI), with cardiac fibrosis forming in the myocardium as a response to injury. The dense, avascular scar tissue that develops in the myocardium after injury following MI creates an inhospitable microenvironment that hinders cellular function, survival, and recruitment, thus severely limiting tissue regeneration. We have previously demonstrated the ability of hyaluronic acid (HA) polymer microrods to modulate fibroblast phenotype using discrete biophysical cues and to improve cardiac outcomes after implantation in rodent models of ischemia-reperfusion MI injury. Here, we developed a dual-pronged biochemical and biophysical therapeutic strategy leveraging bioactive microrods to more robustly attenuate cardiac fibrosis after acute myocardial injury. Incorporation of the anti-fibrotic proteoglycan decorin within microrods led to sustained release of decorin over one month in vitro and after implantation, resulted in marked improvement in cardiac function and ventricular remodeling, along with decreased fibrosis and cardiomyocyte hypertrophy. Together, this body of work aims to contribute important knowledge to help develop rationally designed engineered biomaterials that may be used to successfully treat cardiovascular diseases.
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Affiliation(s)
- Tejal Desai
- University of California, San Francisco & Brown University
| | - Priya Mohindra
- University of California, Berkeley & University of California, San Francisco
| | - Justin Zhong
- University of California, Berkeley & University of California, San Francisco
| | | | - Cindy Huynh
- Brigham and Women's Hospital, Harvard Medical School
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Gül M, Dong L, Wang D, Diri MA, Andersen CY. Surrogate testes: Allogeneic spermatogonial stem cell transplantation within an encapsulation device may restore male fertility. Med Hypotheses 2020; 139:109634. [PMID: 32087491 DOI: 10.1016/j.mehy.2020.109634] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 02/08/2020] [Accepted: 02/13/2020] [Indexed: 01/15/2023]
Abstract
Toxic insult to the gonads by chemotherapy or radiotherapy can lead to permanent infertility. It's an important health concern because each year more than 4000 male patients are at risk of azoospermia in the United States due to gonadotoxicity of the regimens used. There are also several benign/genetic diseases whose natural course can result in infertility without gonadotoxic therapy. Considering the fact that most of these people are cured and survive with the advent of modern medicine, infertility is related to serious psychological and relationship implications and parenthood is a significant issue for those patients. Semen cryopreservation option is available for postpubertal adolescent and adult men, while children do not have this storing option since they do not have mature spermatozoa. However, their testes contain spermatogonial stem cells (SSCs), which are initiators of spermatogenesis. Promising findings in animal studies and human cell lines have encouraged scientists that SSCs may be hope for restoring fertility option of patients who cannot produce functional sperm and who have no other choice to preserve their future fertility. For this reason, several centers around the world already began to collect and cryopreserve testicular tissue or cells with anticipation that SSC-based therapies will be available in the near future; however, an optimal transplantation design in humans is yet to be developed. Here we propose an allogeneic testicular stem cell transplantation with an encapsulation device to restore fertility in patients with infertility. We endeavor to discuss the reliability of this method with the current literature and bring the evidence on its feasibility.
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Affiliation(s)
- Murat Gül
- Laboratory of Reproductive Biology, Copenhagen University Hospital Rigshospitalet, 2100 Copenhagen, Denmark; Department of Urology, Selcuk University School of Medicine, 42250 Konya, Turkey.
| | - Lihua Dong
- Laboratory of Reproductive Biology, Copenhagen University Hospital Rigshospitalet, 2100 Copenhagen, Denmark
| | - Danyang Wang
- Laboratory of Reproductive Biology, Copenhagen University Hospital Rigshospitalet, 2100 Copenhagen, Denmark
| | - Mehmet Akif Diri
- Department of Urology, Aksaray University School of Medicine, 68100 Aksaray, Turkey
| | - Claus Yding Andersen
- Laboratory of Reproductive Biology, Copenhagen University Hospital Rigshospitalet, 2100 Copenhagen, Denmark
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Robotti F, Sterner I, Bottan S, Monné Rodríguez JM, Pellegrini G, Schmidt T, Falk V, Poulikakos D, Ferrari A, Starck C. Microengineered biosynthesized cellulose as anti-fibrotic in vivo protection for cardiac implantable electronic devices. Biomaterials 2019; 229:119583. [PMID: 31707297 DOI: 10.1016/j.biomaterials.2019.119583] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 10/21/2019] [Accepted: 10/26/2019] [Indexed: 01/13/2023]
Abstract
Upon cardiac implantable electronic device (CIED) exchange, upgrade, or revision surgery patients are exposed to a considerable risk of adverse events. The presence of firm fibrotic tissue endangers these procedures. Leads can be damaged in the attempt of freeing them from fibrotic tissue. Hematoma can form as result of capsulectomy, pocket debridement and leads dissection. Due to the increasing number of CIED exchange, upgrade and revision surgeries, the incidence of related complications is expected to rise in the near future.The aim of the study was to evaluate the feasibility, safety, and performance of a rationally micro-engineered non-resorbable biosynthesized cellulose (BC) membrane as conformal wrapping protection around CIED implants. Protective membranes were generated by means of a recently established method to transfer on-demand microscale geometries onto the surface of BC. A chronic minipig animal model was selected to investigate the performance of the BC anti-fibrotic protection, directly measured as reduction of fibrotic tissue formation. Sixteen (n = 16) animals received each one BC coated pacemaker (PMC) and one native pacemaker (BI) at equivalent anatomical sites. BC protective layers were juxtaposed around pacemakers through a fast and well-repeatable procedure. Explants were performed at 3 and 12 months after implantation. Endpoint analysis showed that the BC protective layers were 100% integer, with no sign of chemical or mechanical degradation and appeared as a thin layer of white-tan material, adherent to the surrounding thin fibrous capsule, from which it could be peeled off by gently pulling with forceps. The protective effect of micro-engineered BC yielded an average thickness reduction of 66% of the fibrotic tissue thickness generated around PMC, as compared to that measured around the naked counterpart (i.e. the BI). When protected by in BC, both the generator and the proximal parts of the leads were completely free from fibrotic tissue. The insertion of an anti-adhesive, non-resorbable and well-tolerated BC interface between the implant and the surrounding tissue in the surgical pocket significantly reduced the formation of fibrotic tissue, ensuring an easy access to the device pocket, and thus creating the conditions for simplified CIED revision surgeries.
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Affiliation(s)
- Francesco Robotti
- Laboratory of Thermodynamics in Emerging Technologies, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, CH-8092 Zurich, Switzerland; Wyss Zurich Translational Center, Zurich, Switzerland
| | - Ita Sterner
- Department of Cardiothoracic and Vascular Surgery, German Heart Center Berlin, Berlin, Germany
| | - Simone Bottan
- Wyss Zurich Translational Center, Zurich, Switzerland
| | - Josep M Monné Rodríguez
- Laboratory for Animal Model Pathology, Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland.
| | - Giovanni Pellegrini
- Laboratory for Animal Model Pathology, Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Tanja Schmidt
- Charité- Universitätsmedizin Berlin, Forschungseinrichtungen für experimentelle Medizin, Berlin, Germany
| | - Volkmar Falk
- Department of Cardiothoracic and Vascular Surgery, German Heart Center Berlin, Berlin, Germany; Division of Cardiovascular Surgery, Charité, Berlin, Germany; German Center of Cardiovascular Research (DZHK), partner site, Berlin, Germany; Department of Health Science and Technology, ETH Zurich, Switzerland
| | - Dimos Poulikakos
- Laboratory of Thermodynamics in Emerging Technologies, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, CH-8092 Zurich, Switzerland
| | - Aldo Ferrari
- Laboratory of Thermodynamics in Emerging Technologies, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, CH-8092 Zurich, Switzerland; EMPA, Swiss Federal Laboratories for Material Science and Technology, Überlandstrasse 129, Dübendorf 8600, Switzerland.
| | - Christoph Starck
- Department of Cardiothoracic and Vascular Surgery, German Heart Center Berlin, Berlin, Germany; German Center of Cardiovascular Research (DZHK), partner site, Berlin, Germany.
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Le LV, Mohindra P, Fang Q, Sievers RE, Mkrtschjan MA, Solis C, Safranek CW, Russell B, Lee RJ, Desai TA. Injectable hyaluronic acid based microrods provide local micromechanical and biochemical cues to attenuate cardiac fibrosis after myocardial infarction. Biomaterials 2018; 169:11-21. [PMID: 29631164 DOI: 10.1016/j.biomaterials.2018.03.042] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 03/22/2018] [Accepted: 03/23/2018] [Indexed: 12/21/2022]
Abstract
Repairing cardiac tissue after myocardial infarction (MI) is one of the most challenging goals in tissue engineering. Following ischemic injury, significant matrix remodeling and the formation of avascular scar tissue significantly impairs cell engraftment and survival in the damaged myocardium. This limits the efficacy of cell replacement therapies, demanding strategies that reduce pathological scarring to create a suitable microenvironment for healthy tissue regeneration. Here, we demonstrate the successful fabrication of discrete hyaluronic acid (HA)-based microrods to provide local biochemical and biomechanical signals to reprogram cells and attenuate cardiac fibrosis. HA microrods were produced in a range of physiological stiffness and shown to degrade in the presence of hyaluronidase. Additionally, we show that fibroblasts interact with these microrods in vitro, leading to significant changes in proliferation, collagen expression and other markers of a myofibroblast phenotype. When injected into the myocardium of an adult rat MI model, HA microrods prevented left ventricular wall thinning and improved cardiac function at 6 weeks post infarct.
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Affiliation(s)
- Long V Le
- UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Priya Mohindra
- UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Qizhi Fang
- Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Richard E Sievers
- Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Michael A Mkrtschjan
- Department of Bioengineering, University of Illinois, Chicago, Chicago, IL 60607, USA
| | - Christopher Solis
- Department of Physiology and Biophysics, University of Illinois, Chicago, Chicago, IL 60612, USA
| | - Conrad W Safranek
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Brenda Russell
- Department of Physiology and Biophysics, University of Illinois, Chicago, Chicago, IL 60612, USA
| | - Randall J Lee
- UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, San Francisco, San Francisco, CA 94158, USA; Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Tejal A Desai
- UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, San Francisco, San Francisco, CA 94158, USA; Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA 94158, USA.
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Abstract
Type 1 diabetes is an autoimmune disorder in which the immune system attacks and destroys insulin-producing islet cells of the pancreas. Although islet transplantation has proved to be successful for some patients with type 1 diabetes, its widespread use is limited by islet donor shortage and the requirement for lifelong immunosuppression. An encapsulation strategy that can prevent the rejection of xenogeneic islets or of stem cell-derived allogeneic islets can potentially eliminate both of these barriers. Although encapsulation technology has met several challenges, the convergence of expertise in materials, nanotechnology, stem cell biology and immunology is allowing us to get closer to the goal of encapsulated islet cell therapy for humans.
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Affiliation(s)
- Tejal Desai
- University of California, San Francisco, Department of Bioengineering and Therapeutic Sciences, Byers Hall Rm 203C, MC 2520, 1700 4th Street, San Francisco, California 94158-2330, USA
| | - Lonnie D Shea
- University of Michigan, Department of Biomedical Engineering, 1119 Carl A. Gerstacker Building, 2200 Bonisteel Boulevard, Ann Arbor, Michigan 48109-2099, USA
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