1
|
Zuo X, Jiang X, Zhang Y, Huang Y, Wang N, Zhu P, Kang YJ. A clinical feasible stem cell encapsulation ensures an improved wound healing. Biomed Mater 2023; 18. [PMID: 36701809 DOI: 10.1088/1748-605x/acb67a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 01/26/2023] [Indexed: 01/28/2023]
Abstract
Cell encapsulation has proven to be promising in stem cell therapy. However, there are issues needed to be addressed, including unsatisfied yield, unmet clinically friendly formulation, and unacceptable viability of stem cells after cryopreservation and thawing. We developed a novel biosynsphere technology to encapsulate stem cells in clinically-ready biomaterials with controlled microsphere size. We demonstrated that biosynspheres ensure the bioviability and functionality of adipose-derived stromal cells (ADSCs) encapsulated, as delineated by a series of testing procedures. We further demonstrated that biosynspheres protect ADSCs from the hardness of clinically handling such as cryopreservation, thawing, high-speed centrifugation and syringe/nozzle injection. In a swine full skin defect model, we showed that biosynspheres were integrated to the destined tissues and promoted the repair of injured tissues with an accelerating healing process, less scar tissue formation and normalized deposition of collagen type I and type III, the ratio similar to that found in normal skin. These findings underscore the potential of biosynsphere as an improved biofabrication technology for tissue regeneration in clinical setting.
Collapse
Affiliation(s)
- Xiao Zuo
- Regenerative Medicine Research Center, Sichuan University West China Hospital, Chengdu, Sichuan 610041, People's Republic of China.,Sichuan 3D Bio-Printing Institute, Chengdu, Sichuan 611731, People's Republic of China.,Revotek Co., Ltd, Chengdu, Sichuan 611731, People's Republic of China
| | - Xia Jiang
- Regenerative Medicine Research Center, Sichuan University West China Hospital, Chengdu, Sichuan 610041, People's Republic of China
| | - Yaya Zhang
- Sichuan 3D Bio-Printing Institute, Chengdu, Sichuan 611731, People's Republic of China.,Department of Physiology, University of Tennessee Health Science Center, Memphis, TN 38163, United States of America
| | - Yushi Huang
- Revotek Co., Ltd, Chengdu, Sichuan 611731, People's Republic of China
| | - Ning Wang
- Revotek Co., Ltd, Chengdu, Sichuan 611731, People's Republic of China
| | - Ping Zhu
- Revotek Co., Ltd, Chengdu, Sichuan 611731, People's Republic of China
| | - Y James Kang
- Regenerative Medicine Research Center, Sichuan University West China Hospital, Chengdu, Sichuan 610041, People's Republic of China.,Sichuan 3D Bio-Printing Institute, Chengdu, Sichuan 611731, People's Republic of China.,Department of Physiology, University of Tennessee Health Science Center, Memphis, TN 38163, United States of America
| |
Collapse
|
2
|
Adhesive and biodegradable membranes made of sustainable catechol-functionalized marine collagen and chitosan. Colloids Surf B Biointerfaces 2022; 213:112409. [PMID: 35182936 DOI: 10.1016/j.colsurfb.2022.112409] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 01/20/2022] [Accepted: 02/10/2022] [Indexed: 11/27/2022]
Abstract
We describe bioadhesive membranes developed from marine renewable biomaterials, namely chitosan and collagen extracted from fish skins. Collagen was functionalized with catechol groups (Coll-Cat) to provide the membranes with superior adhesive properties in a wet environment and blended with chitosan to improve the mechanical properties. The blended membranes were compared to chitosan and chitosan blended with unmodified collagen in terms of surface morphology, wettability, weight loss, water uptake, mechanical and adhesive properties. The metabolic activity, the viability and the morphology of L929 fibroblastic cells seeded on these membranes were also assessed. Our results show that the functionalization with catechol groups improves the adhesive and mechanical properties of the membranes and enhances cell attachment and proliferation. These data suggest that the developed marine origin-raw membranes present a potential towards the restoration of the structural and functional properties of damaged soft tissues.
Collapse
|
3
|
Gupta A, Singh S. Potential Role of Growth Factors Controlled Release in Achieving Enhanced Neuronal Trans-differentiation from Mesenchymal Stem Cells for Neural Tissue Repair and Regeneration. Mol Neurobiol 2021; 59:983-1001. [PMID: 34816381 DOI: 10.1007/s12035-021-02646-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 11/11/2021] [Indexed: 02/07/2023]
Abstract
With an increase in the incidence of neurodegenerative diseases, a need to replace incapable conventional methods has arisen. To overcome this burden, stem cells therapy has emerged as an efficient treatment option. Endeavours to accomplish this have paved the path to neural regeneration through efficient neuronal transdifferentiation. Despite their potential, the use of stem cells still entails several limitations, such as low differentiation efficiency and difficulties in guiding differentiation. The process of neural differentiation through the stem cells is achieved through the use of chemical inducers or growth factors and their direct introduction reduces their bioavailability in the system. To address these limitations, neural regeneration ventures require growth factors to be effectively implemented on stem cells in order to produce functional neuronal precursor cells. An efficient technique to achieve it is through the delivery of growth factors via microcarriers for their sustained release. It ensures the presence of commensurable concentration even at later stages of neuronal transdifferentiation. Nanofibers and nanoparticles, along with liposomes and such, have been used to implement this. The interaction between such carriers and the growth factors is mainly electrostatic. Such interaction enables them to form a stable assembly through immobilisation of the growth factor either onto their surfaces or within the core of their structures. The rate of sustained release depends upon the release kinetics associated with the polymeric structure employed and its interaction with the encapsulated growth factor. The sustained release ensures that the stem cells immerse under the effect of the growth factors for a prolonged period, ultimately aiding in the formation of cells showing ample characteristics of neuron precursors. This review analyses the various carriers that have been employed for the release of growth factors in an orderly fashion and their constituents, along with the advantages and the limitations they pose in delivering the growth factors for facilitating the process of neuronal transdifferentiation.
Collapse
Affiliation(s)
- Ayushi Gupta
- Applied Science Department, Indian Institute of Information Technology, Allahabad, UP, India
| | - Sangeeta Singh
- Applied Science Department, Indian Institute of Information Technology, Allahabad, UP, India.
| |
Collapse
|