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Bhattacharyya SK, Nandi S, Dey T, Ray SK, Mandal M, Das NC, Banerjee S. Fabrication of a Vitamin B12-Loaded Carbon Dot/Mixed-Ligand Metal Organic Framework Encapsulated within the Gelatin Microsphere for pH Sensing and In Vitro Wound Healing Assessment. ACS Appl Bio Mater 2022; 5:5693-5705. [PMID: 36475584 DOI: 10.1021/acsabm.2c00725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Bacterial invasion is a serious concern during the wound healing process. The colonization of bacteria is mainly responsible for the pH fluctuation at the wound site. Therefore, the fabrication of a proper wound dressing material with antibacterial activity and pH monitoring ability is necessary to acquire a fast healing process. Therefore, this work is dedicated to designing a vitamin B12-loaded gelatin microsphere (MS) decorated with a carbon dot (CD) metal-organic framework (MOF) for simultaneous pH sensing and advanced wound closure application. The resultant MS portrayed a high specific surface area and a hierarchically porous structure. Furthermore, the surface of the resultant MS contained numerous carboxyl groups and amine groups whose deprotonation and protonation with the pH alternation are accountable for the pH-sensitive properties. The vitamin B12 release study was speedy from the MOF structure in an acidic medium, which was checked by gelatin coating, and a controlled drug release behavior was observed. The system showed excellent cytocompatibility toward the L929 cell line and remarkable antibacterial performance against Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus. Furthermore, the combined effect of Zn2+, the imidazole unit, and CDs produces an outstanding bactericidal effect on the injury sites. Finally, the in vitro wound model suggests that the presence of the vitamin B12-loaded gelatin MS accelerates the proliferation of resident fibroblast L929 cells and causes tissue regeneration in a time-dependent manner. The relative wound area, % of wound closure, and wound healing speed values are remarkable and suggest the requirement for assessing the response of the system before exploiting its prospective in vivo application.
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Affiliation(s)
| | - Suvendu Nandi
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur721302, India
| | - Tamal Dey
- Department of Physics, Indian Institute of Technology Kharagpur, Kharagpur721302, India
| | - Samit Kumar Ray
- School of Nano Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur721302, India.,Department of Physics, Indian Institute of Technology Kharagpur, Kharagpur721302, India
| | - Mahitosh Mandal
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur721302, India
| | - Narayan Chandra Das
- School of Nano Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur721302, India.,Rubber Technology Centre, Indian Institute of Technology Kharagpur, Kharagpur721302, India
| | - Susanta Banerjee
- School of Nano Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur721302, India.,Materials Science Centre, Indian Institute of Technology Kharagpur, Kharagpur721302, India
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