|
1
|
Skandalis A, Sentoukas T, Selianitis D, Balafouti A, Pispas S. Using RAFT Polymerization Methodologies to Create Branched and Nanogel-Type Copolymers. MATERIALS (BASEL, SWITZERLAND) 2024; 17:1947. [PMID: 38730753 PMCID: PMC11084462 DOI: 10.3390/ma17091947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 04/13/2024] [Accepted: 04/19/2024] [Indexed: 05/13/2024]
Abstract
This review aims to highlight the most recent advances in the field of the synthesis of branched copolymers and nanogels using reversible addition-fragmentation chain transfer (RAFT) polymerization. RAFT polymerization is a reversible deactivation radical polymerization technique (RDRP) that has gained tremendous attention due to its versatility, compatibility with a plethora of functional monomers, and mild polymerization conditions. These parameters lead to final polymers with good control over the molar mass and narrow molar mass distributions. Branched polymers can be defined as the incorporation of secondary polymer chains to a primary backbone, resulting in a wide range of complex macromolecular architectures, like star-shaped, graft, and hyperbranched polymers and nanogels. These subcategories will be discussed in detail in this review in terms of synthesis routes and properties, mainly in solutions.
Collapse
Affiliation(s)
- Athanasios Skandalis
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece; (D.S.); (A.B.)
| | - Theodore Sentoukas
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Sklodowska Street, 41-819 Zabrze, Poland
| | - Dimitrios Selianitis
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece; (D.S.); (A.B.)
| | - Anastasia Balafouti
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece; (D.S.); (A.B.)
| | - Stergios Pispas
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece; (D.S.); (A.B.)
| |
Collapse
|
|
2
|
Li Z, Wang H, Zhang K, Yang B, Xie X, Yang Z, Kong L, Shi P, Zhang Y, Ho YP, Zhang ZY, Li G, Bian L. Bisphosphonate-based hydrogel mediates biomimetic negative feedback regulation of osteoclastic activity to promote bone regeneration. Bioact Mater 2022; 13:9-22. [PMID: 35224288 PMCID: PMC8844702 DOI: 10.1016/j.bioactmat.2021.11.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 11/04/2021] [Accepted: 11/04/2021] [Indexed: 12/13/2022] Open
Abstract
The intricate dynamic feedback mechanisms involved in bone homeostasis provide valuable inspiration for the design of smart biomaterial scaffolds to enhance in situ bone regeneration. In this work, we assembled a biomimetic hyaluronic acid nanocomposite hydrogel (HA-BP hydrogel) by coordination bonds with bisphosphonates (BPs), which are antiosteoclastic drugs. The HA-BP hydrogel exhibited expedited release of the loaded BP in response to an acidic environment. Our in vitro studies showed that the HA-BP hydrogel inhibits mature osteoclastic differentiation of macrophage-like RAW264.7 cells via the released BP. Furthermore, the HA-BP hydrogel can support the initial differentiation of primary macrophages to preosteoclasts, which are considered essential during bone regeneration, whereas further differentiation to mature osteoclasts is effectively inhibited by the HA-BP hydrogel via the released BP. The in vivo evaluation showed that the HA-BP hydrogel can enhance the in situ regeneration of bone. Our work demonstrates a promising strategy to design biomimetic biomaterial scaffolds capable of regulating bone homeostasis to promote bone regeneration. HA-BP hydrogel can mediate the expedited release of BP in response to the acidic microenvironment created by osteoclasts. HA-BP hydrogel supports preosteoclastic differentiation, but inhibits the further osteoclastic maturation. The implantation of HA-BP hydrogel in critical-sized bone defects significantly promotes in situ bone regeneration in vivo.
Collapse
Affiliation(s)
- Zhuo Li
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Sha Tin, New Territories, 999077, Hong Kong, China
| | - Haixing Wang
- Department of Orthopaedic and Traumatology, The Chinese University of Hong Kong, Sha Tin, New Territories, 999077, Hong Kong, China
| | - Kunyu Zhang
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou, 510006, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China
- Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou, 510006, China
| | - Boguang Yang
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Sha Tin, New Territories, 999077, Hong Kong, China
| | - Xian Xie
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Sha Tin, New Territories, 999077, Hong Kong, China
| | - Zhengmeng Yang
- Department of Orthopaedic and Traumatology, The Chinese University of Hong Kong, Sha Tin, New Territories, 999077, Hong Kong, China
| | - Lingchi Kong
- Department of Orthopaedic Surgery, Affiliated Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai, 200233, China
| | - Peng Shi
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou, 510006, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China
| | - Yuan Zhang
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou, 510006, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China
| | - Yi-Ping Ho
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Sha Tin, New Territories, 999077, Hong Kong, China
| | - Zhi-Yong Zhang
- Translational Research Centre of Regenerative Medicine and 3D Printing of Guangzhou Medical University, Guangdong Province Engineering Research Center for Biomedical Engineering, State Key Laboratory of Respiratory Disease, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou City, Guangdong Province, 510150, China
- Corresponding author.
| | - Gang Li
- Department of Orthopaedic and Traumatology, The Chinese University of Hong Kong, Sha Tin, New Territories, 999077, Hong Kong, China
- Corresponding author.
| | - Liming Bian
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou, 510006, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China
- Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou, 510006, China
- Corresponding author. School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou, 510006, China.
| |
Collapse
|
|
4
|
Zhang M, Wu J, Li Z, Hou W, Li Y, Shi Y, Chen Y. Synthesis and Visualization of bottlebrush-shaped segmented hyperbranched polymers. Polym Chem 2022. [DOI: 10.1039/d2py00898j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Visualization of single molecular morphology provides an intuitive evidence to understand the relationships of molecular structure-synthetic method. Herein, by combining the architectural features of molecular bottlebrush (MBB) and segmented hyperbranched...
Collapse
|