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Suryavanshi P, Mahajan S, Banerjee SK, Seth K, Banerjee S. Synthesis and characterization of a pH/temperature-dual responsive hydrogel with promising biocompatibility features for stimuli-responsive 5-FU delivery. J Mater Chem B 2024; 12:5098-5110. [PMID: 38700289 DOI: 10.1039/d4tb00168k] [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: 05/05/2024]
Abstract
The tunable properties of stimuli-responsive copolymers or hydrogels enable their application in different fields such as biomedical engineering, tissue engineering, or even drug release. Here we introduce a new PNIPAM-based triblock copolymer material comprising a controlled amount of a novel hydrophobic crosslinker 2,4'-diacryloyloxy benzophenone (DABP) and acrylic acid (AAc) to achieve lower critical solution temperature (LCST) between ambient and body temperatures. The dual stimuli-responsive p(NIPAM-co-DABP-co-AAc) triblock copolymer material and hydrogel were synthesized, and their temperature and pH-responsive behaviors were systematically investigated. The hydrogel exhibited excellent temperature and pH-responsive properties with an LCST of around 30 °C. Moreover, the synthesized copolymer has been demonstrated to be nontoxic both in vitro and in vivo. When the hydrogel was preloaded with the model drug 5-fluorouracil (5-FU), the designed hydrogel released the drug in a temperature and pH-controlled fashion. It was observed that the prepared hydrogel has the ability to entrap 5-FU, and the loading is more than 85%. In the case of temperature-controlled release, we observed almost complete release of 5-FU at lower temperatures and sustained release behavior at higher temperatures. In addition, the hydrogel matrix was able to retard the release of 5-FU in an acidic environment and selectively release 5-FU in a basic environment. By realizing how the hydrogel properties influence the release of drugs from preloaded hydrogels, it is possible to design new materials with myriad applications in the drug delivery field.
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Affiliation(s)
- Purushottam Suryavanshi
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER)-Guwahati, Changsari 781101, Assam, India.
| | - Shriram Mahajan
- Department of Biotechnology, NIPER-Guwahati, Changsari 781101, Assam, India
| | - Sanjay K Banerjee
- Department of Biotechnology, NIPER-Guwahati, Changsari 781101, Assam, India
| | - Kapileswar Seth
- Department of Medicinal Chemistry, NIPER-Guwahati, Changsari 781101, Assam, India.
| | - Subham Banerjee
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER)-Guwahati, Changsari 781101, Assam, India.
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Ahangar P, Li J, Nkindi LS, Mohammadrezaee Z, Cooke ME, Martineau PA, Weber MH, Saade E, Nateghi N, Rosenzweig DH. A Nanoporous 3D-Printed Scaffold for Local Antibiotic Delivery. MICROMACHINES 2023; 15:83. [PMID: 38258202 PMCID: PMC10819679 DOI: 10.3390/mi15010083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 12/14/2023] [Accepted: 12/27/2023] [Indexed: 01/24/2024]
Abstract
Limitations of bone defect reconstruction include poor bone healing and osteointegration with acrylic cements, lack of strength with bone putty/paste, and poor osteointegration. Tissue engineering aims to bridge these gaps through the use of bioactive implants. However, there is often a risk of infection and biofilm formation associated with orthopedic implants, which may develop anti-microbial resistance. To promote bone repair while also locally delivering therapeutics, 3D-printed implants serve as a suitable alternative. Soft, nanoporous 3D-printed filaments made from a thermoplastic polyurethane and polyvinyl alcohol blend, LAY-FOMM and LAY-FELT, have shown promise for drug delivery and orthopedic applications. Here, we compare 3D printability and sustained antibiotic release kinetics from two types of commercial 3D-printed porous filaments suitable for bone tissue engineering applications. We found that both LAY-FOMM and LAY-FELT could be consistently printed into scaffolds for drug delivery. Further, the materials could sustainably release Tetracycline over 3 days, independent of material type and infill geometry. The drug-loaded materials did not show any cytotoxicity when cultured with primary human fibroblasts. We conclude that both LAY-FOMM and LAY-FELT 3D-printed scaffolds are suitable devices for local antibiotic delivery applications, and they may have potential applications to prophylactically reduce infections in orthopedic reconstruction surgery.
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Affiliation(s)
- Pouyan Ahangar
- Department of Surgery, McGill University, Montreal, QC H3G 1A4, Canada; (P.A.); (M.E.C.); (P.A.M.); (M.H.W.)
| | - Jialiang Li
- Department of Science, TAV College, Montreal, QC H3W 3E1, Canada; (J.L.); (L.S.N.); (Z.M.); (E.S.); (N.N.)
| | - Leslie S. Nkindi
- Department of Science, TAV College, Montreal, QC H3W 3E1, Canada; (J.L.); (L.S.N.); (Z.M.); (E.S.); (N.N.)
| | - Zohreh Mohammadrezaee
- Department of Science, TAV College, Montreal, QC H3W 3E1, Canada; (J.L.); (L.S.N.); (Z.M.); (E.S.); (N.N.)
| | - Megan E. Cooke
- Department of Surgery, McGill University, Montreal, QC H3G 1A4, Canada; (P.A.); (M.E.C.); (P.A.M.); (M.H.W.)
| | - Paul A. Martineau
- Department of Surgery, McGill University, Montreal, QC H3G 1A4, Canada; (P.A.); (M.E.C.); (P.A.M.); (M.H.W.)
| | - Michael H. Weber
- Department of Surgery, McGill University, Montreal, QC H3G 1A4, Canada; (P.A.); (M.E.C.); (P.A.M.); (M.H.W.)
| | - Elie Saade
- Department of Science, TAV College, Montreal, QC H3W 3E1, Canada; (J.L.); (L.S.N.); (Z.M.); (E.S.); (N.N.)
| | - Nima Nateghi
- Department of Science, TAV College, Montreal, QC H3W 3E1, Canada; (J.L.); (L.S.N.); (Z.M.); (E.S.); (N.N.)
| | - Derek H. Rosenzweig
- Department of Surgery, McGill University, Montreal, QC H3G 1A4, Canada; (P.A.); (M.E.C.); (P.A.M.); (M.H.W.)
- Injury, Repair and Recovery Program, Research Institute of McGill University Health Centre, Montreal, QC H3G 1A4, Canada
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