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Rajalekshmy GP, Ramesan RM, Geetha CS, Pratheesh KV, Shenoy SJ, Anilkumar TV. In Vivo Wound-Healing Efficacy of Insulin-Loaded Strontium-Cross-Linked Alginate-Based Hydrogels in Diabetic Rats. ACS Biomater Sci Eng 2024; 10:2552-2566. [PMID: 38450650 DOI: 10.1021/acsbiomaterials.3c01692] [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] [Indexed: 03/08/2024]
Abstract
The wound-healing effect of insulin is well studied and reported. However, prolonged topical application of insulin without compromising its biological activity is still a challenge. In this study, the effect of topically delivered insulin on promoting wound healing in diabetic animals was evaluated. Alginate diamine PEG-g-poly(PEGMA) (ADPM2S2) was the material used for the topical delivery of insulin. ADPM2S2 hydrogels release insulin and strontium ions, and they synergistically act to regulate different phases of wound healing. Insulin was released from the ADPM2S2 hydrogel for a period of 48 h, maintaining its structural stability and biological activity. In vitro studies were performed under high-glucose conditions to evaluate the wound-healing potential of insulin. Insulin-loaded ADPM2S2 hydrogels showed significant improvement in cell migration, proliferation, and collagen deposition, compared to control cells under high-glucose conditions. Immunostaining studies in L929 cells showed a reduction in phospho Akt expression under high-glucose conditions, and in the presence of insulin, the expression increased. The gene expression studies revealed that insulin plays an important role in regulating the inflammatory phase and macrophage polarization, which favors accelerated wound closure. In vivo experiments in diabetic rat excision wounds treated with insulin-loaded ADPM2S2 showed 95% wound closure within 14 days compared with 82% in control groups. Thus, both the in vitro and in vivo results signify the therapeutic potential of topically delivered insulin in wound management under high-glucose conditions.
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Affiliation(s)
- G P Rajalekshmy
- Division of Biosurface Technology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Poojappura, Thiruvananthapuram 695012, Kerala, India
| | - Rekha M Ramesan
- Division of Biosurface Technology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Poojappura, Thiruvananthapuram 695012, Kerala, India
| | - C Surendran Geetha
- Experimental Pathology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Poojappura, Thiruvananthapuram 695012, Kerala, India
| | - Kanakarajan V Pratheesh
- Experimental Pathology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Poojappura, Thiruvananthapuram 695012, Kerala, India
| | - Sachin J Shenoy
- Division of In Vivo Models and Testing, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Poojappura, Thiruvananthapuram 695012, Kerala, India
| | - Thapasimuthu V Anilkumar
- Experimental Pathology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Poojappura, Thiruvananthapuram 695012, Kerala, India
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Nair RS, Sobhan PK, Shenoy SJ, Prabhu MA, Rema AM, Ramachandran S, C Geetha S, V Pratheesh K, Mony MP, Raj R, Anilkumar TV. A porcine cholecystic extracellular matrix conductive scaffold for cardiac tissue repair. J Biomed Mater Res B Appl Biomater 2022; 110:2039-2049. [PMID: 35305082 DOI: 10.1002/jbm.b.35058] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 08/12/2021] [Accepted: 08/22/2021] [Indexed: 11/08/2022]
Abstract
Cardiac tissue engineering using cells, scaffolds or signaling molecules is a promising approach for replacement or repair of damaged myocardium. This study addressed the contemporary need for a conductive biomimetic nanocomposite scaffold for cardiac tissue engineering by examining the use of a gold nanoparticle-incorporated porcine cholecystic extracellular matrix for the same. The scaffold had an electrical conductivity (0.74 ± 0.03 S/m) within the range of native myocardium. It was a suitable substrate for the growth and differentiation of cardiomyoblast (H9c2) as well as rat mesenchymal stem cells to cardiomyocyte-like cells. Moreover, as an epicardial patch, the scaffold promoted neovascularisation and cell proliferation in infarcted myocardium of rats. It was concluded that the gold nanoparticle coated cholecystic extracellular matrix is a prospective biomaterial for cardiac tissue engineering.
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Affiliation(s)
- Reshma S Nair
- Division of Experimental Pathology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India
| | - Praveen K Sobhan
- Division of Tissue Culture, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India
| | - Sachin J Shenoy
- Division of In Vivo Models and Testing, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India
| | - Mukund A Prabhu
- Department of Cardiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India
| | - Aswathy M Rema
- Division of Tissue Culture, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India
| | - Surya Ramachandran
- Cardiovascular Diseases and Diabetes Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India
| | - Surendran C Geetha
- Division of Experimental Pathology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India
| | - Kanakarajan V Pratheesh
- Division of Experimental Pathology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India
| | - Manjula P Mony
- Division of Experimental Pathology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India
| | - Reshmi Raj
- Division of Experimental Pathology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India
| | - Thapasimuthu V Anilkumar
- Division of Experimental Pathology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India.,School of Biology, Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, India
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Mony MP, Shenoy SJ, Raj R, Geetha CS, Pratheesh KV, Nair RS, Purnima C, Anilkumar TV. Gelatin-Modified Cholecyst-Derived Scaffold Promotes Angiogenesis and Faster Healing of Diabetic Wounds. ACS Appl Bio Mater 2021; 4:3320-3331. [DOI: 10.1021/acsabm.0c01648] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | | | | | | | | | - Thapasimuthu V. Anilkumar
- School of Biology, Indian Institute of Science Education and Research Thiruvananthapuram, Maruthamala, Vithura 695551, India
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Raj R, Shenoy SJ, Mony MP, Pratheesh KV, Nair RS, Geetha CS, Sobhan PK, Purnima C, Anilkumar TV. Surface Modification of Polypropylene Mesh with a Porcine Cholecystic Extracellular Matrix Hydrogel for Mitigating Host Tissue Reaction. ACS Appl Bio Mater 2021; 4:3304-3319. [DOI: 10.1021/acsabm.0c01627] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Reshmi Raj
- Division of Experimental Pathology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Biomedical Technology Wing, Thiruvananthapuram 695012, India
| | - Sachin J. Shenoy
- Division of In Vivo Models and Testing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Biomedical Technology Wing, Thiruvananthapuram 695012, India
| | - Manjula P. Mony
- Division of Experimental Pathology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Biomedical Technology Wing, Thiruvananthapuram 695012, India
| | - Kanakarajan V. Pratheesh
- Division of Experimental Pathology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Biomedical Technology Wing, Thiruvananthapuram 695012, India
| | - Reshma S. Nair
- Division of Experimental Pathology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Biomedical Technology Wing, Thiruvananthapuram 695012, India
| | - Chandrika S. Geetha
- Division of Experimental Pathology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Biomedical Technology Wing, Thiruvananthapuram 695012, India
| | - Praveen K. Sobhan
- Division of Tissue Culture, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Biomedical Technology Wing, Thiruvananthapuram 695012, India
| | - Chandramohanan Purnima
- Division of Experimental Pathology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Biomedical Technology Wing, Thiruvananthapuram 695012, India
| | - Thapasimuthu V. Anilkumar
- Division of Experimental Pathology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Biomedical Technology Wing, Thiruvananthapuram 695012, India
- School of Biology, Indian Institute of Science Education and Research—Thiruvananthapuram, Maruthamala, Vithura 695551, India
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Raj R, Sobhan PK, Pratheesh KV, Anilkumar TV. A cholecystic extracellular matrix-based hybrid hydrogel for skeletal muscle tissue engineering. J Biomed Mater Res A 2020; 108:1922-1933. [PMID: 32319161 DOI: 10.1002/jbm.a.36955] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 03/23/2020] [Accepted: 03/28/2020] [Indexed: 12/26/2022]
Abstract
Tailoring the properties of extracellular matrix (ECM) based hydrogels by conjugating with synthetic polymers is an emerging method for designing hybridhydrogels for a wide range of tissue engineering applications. In this study, poly(ethylene glycol) diacrylate (PEGDA), a synthetic polymer at variable concentrations (ranging from 0.2 to 2% wt/vol) was conjugated with porcine cholecyst derived ECM (C-ECM) (1% wt/vol) and prepared a biosynthetic hydrogel having enhanced physico-mechanical properties, as required for skeletal muscle tissue engineering. The C-ECM was functionalized with acrylate groups using activated N-hydroxysuccinimide ester-based chemistry and then conjugated with PEGDA via free-radical polymerization in presence of ammonium persulfate and ascorbic acid. The physicochemical characteristics of the hydrogels were evaluated by Fourier transform infrared spectroscopy and environmental scanning electron microscopy. Further, the hydrogel properties were studied by evaluating rheology, swelling, gelation time, percentage gel fraction, in vitro degradation, and mechanical strength. Biocompatibility of the gel formulations were assessed using the C2C12 skeletal myoblast cells. The hydrogel formulations containing 0.2 and 0.5% wt/vol of PEGDA were non-cytotoxic and found suitable for growth and proliferation of skeletal myoblasts. The study demonstrated a method for modulating the properties of ECM hydrogels through conjugation with bio-inert polymers for skeletal muscle tissue engineering applications.
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Affiliation(s)
- Reshmi Raj
- Division of Experimental Pathology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, 695012, India
| | - Praveen K Sobhan
- Division of Tissue Culture, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, 695012, India
| | - Kanakarajan V Pratheesh
- Division of Experimental Pathology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, 695012, India
| | - Thapasimuthu V Anilkumar
- Division of Experimental Pathology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, 695012, India
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