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Tay EA, Vijayakumar V, Morales RF, Lee ES, Teo A. Protecting the endothelial glycocalyx in COVID-19. PLoS Pathog 2024; 20:e1012203. [PMID: 38753622 PMCID: PMC11098429 DOI: 10.1371/journal.ppat.1012203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2024] Open
Affiliation(s)
- Emira Adam Tay
- School of Applied Science, Republic Polytechnic, Singapore, Singapore
| | | | | | - Ee Soo Lee
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
- School of Pharmacy, University of Nottingham Malaysia, Selangor, Malaysia
| | - Andrew Teo
- National Centre for Infectious Diseases, Singapore, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
- Department of Medicine, The Doherty Institute, University of Melbourne, Melbourne, Australia
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Dixit A, Mahajan A, Saxena R, Chakraborty S, Katti DS. Engineering sulfated polysaccharides and silk fibroin based injectable IPN hydrogels with stiffening and growth factor presentation abilities for cartilage tissue engineering. Biomater Sci 2024; 12:2067-2085. [PMID: 38470831 DOI: 10.1039/d3bm01466e] [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: 03/14/2024]
Abstract
The extracellular matrix (ECM) presents a framework for various biological cues and regulates homeostasis during both developing and mature stages of tissues. During development of cartilage, the ECM plays a critical role in endowing both biophysical and biochemical cues to the progenitor cells. Hence, designing microenvironments that recapitulate these biological cues as provided by the ECM during development may facilitate the engineering of cartilage tissue. In the present study, we fabricated an injectable interpenetrating hydrogel (IPN) system which serves as an artificial ECM and provides chondro-inductive niches for the differentiation of stem cells to chondrocytes. The hydrogel was designed to replicate the gradual stiffening (as a biophysical cue) and the presentation of growth factors (as a biochemical cue) as provided by the natural ECM of the tissue, thus exemplifying a biomimetic approach. This dynamic stiffening was achieved by incorporating silk fibroin, while the growth factor presentation was accomplished using sulfated-carboxymethyl cellulose. Silk fibroin and sulfated-carboxymethyl cellulose (s-CMC) were combined with tyraminated-carboxymethyl cellulose (t-CMC) and crosslinked using HRP/H2O2 to fabricate s-CMC/t-CMC/silk IPN hydrogels. Initially, the fabricated hydrogel imparted a soft microenvironment to promote chondrogenic differentiation, and with time it gradually stiffened to offer mechanical support to the joint. Additionally, the presence of s-CMC conferred the hydrogel with the property of sequestering cationic growth factors such as TGF-β and allowing their prolonged presentation to the cells. More importantly, TGF-β loaded in the developed hydrogel system remained active and induced chondrogenic differentiation of stem cells, resulting in the deposition of cartilage ECM components which was comparable to the hydrogels that were treated with TGF-β provided through media. Overall, the developed hydrogel system acts as a reservoir of the necessary biological cues for cartilage regeneration and simultaneously provides mechanical support for load-bearing tissues such as cartilage.
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Affiliation(s)
- Akansha Dixit
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology-Kanpur, Kanpur-208016, Uttar Pradesh, India.
- The Mehta Family Centre for Engineering in Medicine, Indian Institute of Technology-Kanpur, Kanpur-208016, Uttar Pradesh, India
| | - Aman Mahajan
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology-Kanpur, Kanpur-208016, Uttar Pradesh, India.
- The Mehta Family Centre for Engineering in Medicine, Indian Institute of Technology-Kanpur, Kanpur-208016, Uttar Pradesh, India
| | - Rakshita Saxena
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology-Kanpur, Kanpur-208016, Uttar Pradesh, India.
- The Mehta Family Centre for Engineering in Medicine, Indian Institute of Technology-Kanpur, Kanpur-208016, Uttar Pradesh, India
| | - Saptomee Chakraborty
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology-Kanpur, Kanpur-208016, Uttar Pradesh, India.
- The Mehta Family Centre for Engineering in Medicine, Indian Institute of Technology-Kanpur, Kanpur-208016, Uttar Pradesh, India
| | - Dhirendra S Katti
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology-Kanpur, Kanpur-208016, Uttar Pradesh, India.
- The Mehta Family Centre for Engineering in Medicine, Indian Institute of Technology-Kanpur, Kanpur-208016, Uttar Pradesh, India
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Chen Y, Li X. The utilization of carbon-based nanomaterials in bone tissue regeneration and engineering: Respective featured applications and future prospects. MEDICINE IN NOVEL TECHNOLOGY AND DEVICES 2022. [DOI: 10.1016/j.medntd.2022.100168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
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Soundararajan D, Natarajan L, Trilokesh C, Harish B, Ameen F, Amirul Islam M, Uppuluri KB, Anbazhagan V. Isolation of exopolysaccharide, galactan from marine Vibrio sp. BPM 19 to template the synthesis of antimicrobial platinum nanocomposite. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Devi G.V Y, Nagendra AH, Shenoy P S, Chatterjee K, Venkatesan J. Isolation and purification of fucoidan from Sargassum ilicifolium: Osteogenic differentiation potential in mesenchymal stem cells for bone tissue engineering. J Taiwan Inst Chem Eng 2022. [DOI: 10.1016/j.jtice.2022.104418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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