1
|
Li Q, Liang W, Wu H, Li J, Wang G, Zhen Y, An Y. Challenges in Application: Gelation Strategies of DAT-Based Hydrogel Scaffolds. TISSUE ENGINEERING. PART B, REVIEWS 2024. [PMID: 38666688 DOI: 10.1089/ten.teb.2023.0357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2024]
Abstract
Decellularized adipose tissue (DAT) has great clinical applicability, owing to its abundant source material, natural extracellular matrix microenvironment, and nonimmunogenic attributes, rendering it a versatile resource in the realm of tissue engineering. However, practical implementations are confronted with multifarious limitations. Among these, the selection of an appropriate gelation strategy serves as the foundation for adapting to diverse clinical contexts. The cross-linking strategies under varying physical or chemical conditions exert profound influences on the ultimate morphology and therapeutic efficacy of DAT. This review sums up the processes of DAT decellularization and subsequent gelation, with a specific emphasis on the diverse gelation strategies employed in recent experimental applications of DAT. The review expounds upon methodologies, underlying principles, and clinical implications of different gelation strategies, aiming to offer insights and inspiration for the application of DAT in tissue engineering and advance research for tissue engineering scaffold development.
Collapse
Affiliation(s)
- Qiaoyu Li
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, China
| | - Wei Liang
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, China
| | - Huiting Wu
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, China
| | - Jingming Li
- Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China
| | - Guanhuier Wang
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, China
| | - Yonghuan Zhen
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, China
| | - Yang An
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, China
| |
Collapse
|
2
|
Suwannakot P, Zhu L, Tolentino MAK, Du EY, Sexton A, Myers S, Gooding JJ. Electrostatically Cross-Linked Bioinks for Jetting-Based Bioprinting of 3D Cell Cultures. ACS APPLIED BIO MATERIALS 2024; 7:269-283. [PMID: 38113450 DOI: 10.1021/acsabm.3c00849] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
It has been acknowledged that thousands of drugs that passed two-dimensional (2D) cell culture models and animal studies often fail when entering human clinical trials. Despite the significant development of three-dimensional (3D) models, developing a high-throughput model that can be reproducible on a scale remains challenging. One of the main challenges is precise cell deposition and the formation of a controllable number of spheroids to achieve more reproducible results for drug discovery and treatment applications. Furthermore, when transitioning from manually generated structures to 3D bioprinted structures, the choice of material is limited due to restrictions on materials that are applicable with bioprinters. Herein, we have shown the capability of a fast-cross-linking bioink that can be used to create a single spheroid with varying diameters (660, 1100, and 1340 μm) in a high-throughput manner using a commercialized drop-on-demand bioprinter. Throughout this work, we evaluate the physical properties of printable ink with and without cells, printing optimization, cytocompatibility, cell sedimentation, and homogeneity in ink during the printing process. This work showcases the importance of ink characterization to determine printability and precise cell deposition. The knowledge gained from this work will accelerate the development of next-generation inks compatible with a drop-on-demand 3D bioprinter for various applications such as precision models to mimic diseases, toxicity tests, and the drug development process.
Collapse
Affiliation(s)
- Panthipa Suwannakot
- School of Chemistry, UNSW Sydney, New South Wales 2052, Australia
- Australian Centre for NanoMedicine, UNSW Sydney, New South Wales 2031, Australia
| | - Lin Zhu
- School of Chemistry, UNSW Sydney, New South Wales 2052, Australia
- Australian Centre for NanoMedicine, UNSW Sydney, New South Wales 2031, Australia
| | - M A Kristine Tolentino
- School of Chemistry, UNSW Sydney, New South Wales 2052, Australia
- Australian Centre for NanoMedicine, UNSW Sydney, New South Wales 2031, Australia
| | - Eric Y Du
- School of Chemistry, UNSW Sydney, New South Wales 2052, Australia
- Australian Centre for NanoMedicine, UNSW Sydney, New South Wales 2031, Australia
| | - Andrew Sexton
- Inventia Life Science Pty Ltd, Sydney, New South Wales 2015, Australia
| | - Sam Myers
- Inventia Life Science Pty Ltd, Sydney, New South Wales 2015, Australia
| | - J Justin Gooding
- School of Chemistry, UNSW Sydney, New South Wales 2052, Australia
- Australian Centre for NanoMedicine, UNSW Sydney, New South Wales 2031, Australia
| |
Collapse
|
3
|
Senebandith H, Li D, Srivastava S. Advances, Applications, and Emerging Opportunities in Electrostatic Hydrogels. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:16965-16974. [PMID: 37976453 DOI: 10.1021/acs.langmuir.3c02255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Polyelectrolyte complex (PEC) hydrogels, which self-assemble via complexation of oppositely charged block polymers, have recently risen to prominence owing to their unique characteristics such as hierarchical microstructure, tunable bulk properties, and the ability to precisely assimilate charged cargos (i.e., proteins and nucleic acids). Significant foundational research has delineated the structure-property relationship of PEC hydrogels for use in a wide range of applications. In this Perspective, we summarize key findings on the microstructure and bulk properties of PEC hydrogels and discuss how intrinsic and extrinsic factors can be tuned to create specifically tailored PEC hydrogels with desired properties. We highlight successful applications of PEC hydrogels while offering insight into strategies to overcome their shortcomings and elaborate on emerging opportunities in the field of electrostatic self-assemblies.
Collapse
Affiliation(s)
- Holly Senebandith
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Defu Li
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Samanvaya Srivastava
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California 90095, United States
- Institute for Carbon Management, University of California, Los Angeles, Los Angeles, California 90095, United States
| |
Collapse
|
4
|
Suwannakot P, Nemec S, Peres NG, Du EY, Kilian KA, Gaus K, Kavallaris M, Gooding JJ. Electrostatic Assembly of Multiarm PEG-Based Hydrogels as Extracellular Matrix Mimics: Cell Response in the Presence and Absence of RGD Cell Adhesive Ligands. ACS Biomater Sci Eng 2023; 9:1362-1376. [PMID: 36826383 DOI: 10.1021/acsbiomaterials.2c01252] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
Synthetic hydrogels have been used widely as extracellular matrix (ECM) mimics due to the ability to control and mimic physical and biochemical cues observed in natural ECM proteins such as collagen, laminin, and fibronectin. Most synthetic hydrogels are formed via covalent bonding resulting in slow gelation which is incompatible with drop-on-demand 3D bioprinting of cells and injectable hydrogels for therapeutic delivery. Herein, we developed an electrostatically crosslinked PEG-based hydrogel system for creating high-throughput 3D in vitro models using synthetic hydrogels to mimic the ECM cancer environment. A 3-arm PEG-based polymer backbone was first modified with either permanent cationic charged moieties (2-(methacryloyloxy)ethyl trimethylammonium) or permanent anionic charged moieties (3-sulfopropyl methacrylate potassium salt). The resulting charged polymers can be conjugated further with various amounts of cell adhesive RGD motifs (0, 25, 75, and 98%) to study the influences of RGD motifs on breast cancer (MCF-7) spheroid formation. Formation, stability, and mechanical properties of hydrogels were tested with, and without, RGD to evaluate the cellular response to material parameters in a 3D environment. The hydrogels can be degraded in the presence of salts at room temperature by breaking the interaction of oppositely charged polymer chains. MCF-7 cells could be released with high viability through brief exposure to NaCl solution. Flow cytometry characterization demonstrated that embedded MCF-7 cells proliferate better in a softer (60 Pa) 3D hydrogel environment compared to those that are stiffer (1160 Pa). As the stiffness increases, the RGD motif plays a role in promoting cell proliferation in the stiffer hydrogel. Flow cytometry characterization demonstrated that embedded MCF-7 cells proliferate better in a softer (60 Pa) 3D hydrogel environment compared to those that are stiffer (1160 Pa). As the stiffness increases, the RGD motif plays a role in promoting cell proliferation in the stiffer hydrogel. Additionally, cell viability was not impacted by the tested hydrogel stiffness range between 60 to 1160 Pa. Taken together, this PEG-based tuneable hydrogel system shows great promise as a 3D ECM mimic of cancer extracellular environments with controllable biophysical and biochemical properties. The ease of gelation and dissolution through salt concentration provides a way to quickly harvest cells for further analysis at any given time of interest without compromising cell viability.
Collapse
Affiliation(s)
- Panthipa Suwannakot
- School of Chemistry, UNSW, Sydney, New South Wales 2052, Australia
- Australian Centre for NanoMedicine, UNSW, Sydney, New South Wales 2052, Australia
| | - Stephanie Nemec
- School of Materials Science and Engineering, UNSW, Sydney, New South Wales 2052, Australia
| | - Newton Gil Peres
- School of Medical Sciences, EMBL Australia Node in Single Molecule Science, UNSW, Sydney, New South Wales 2052, Australia
| | - Eric Y Du
- School of Chemistry, UNSW, Sydney, New South Wales 2052, Australia
- Australian Centre for NanoMedicine, UNSW, Sydney, New South Wales 2052, Australia
| | - Kristopher A Kilian
- School of Chemistry, UNSW, Sydney, New South Wales 2052, Australia
- School of Materials Science and Engineering, UNSW, Sydney, New South Wales 2052, Australia
- Australian Centre for NanoMedicine, UNSW, Sydney, New South Wales 2052, Australia
| | - Katharina Gaus
- School of Medical Sciences, EMBL Australia Node in Single Molecule Science, UNSW, Sydney, New South Wales 2052, Australia
| | - Maria Kavallaris
- Children's Cancer Institute, Lowy Cancer Research Centre, UNSW, Sydney, New South Wales 2052, Australia
- Australian Centre for NanoMedicine, UNSW, Sydney, New South Wales 2052, Australia
| | - J Justin Gooding
- School of Chemistry, UNSW, Sydney, New South Wales 2052, Australia
- Australian Centre for NanoMedicine, UNSW, Sydney, New South Wales 2052, Australia
| |
Collapse
|