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Dotivo NC, Rezende RP, Pessoa TBA, Salay LC, Huachaca NSM, Romano CC, Marques EDLS, Costa MS, de Moura SR, Pirovani CP, Dias JCT. Immobilization of PR4A3 enzyme in pluronic F127 polymeric micelles against colorectal adenocarcinoma cells and increase of in vitro bioavailability. Int J Biol Macromol 2020; 166:1238-1245. [PMID: 33202272 DOI: 10.1016/j.ijbiomac.2020.11.006] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 11/01/2020] [Accepted: 11/02/2020] [Indexed: 10/23/2022]
Abstract
Traditional therapy for malignant neoplasms involving surgical procedures, radiotherapy and chemotherapy aims to kill neoplastic cells, but also affects normal cells. Therefore, exogenous proteases are the target of studies in cancer therapy, as they have been shown to be effective in suppressing tumors and reducing metastases. Pluronic F127 (F127) is a copolymer of amphiphilic blocks that has shown significant potential for drug administration, as it is capable of incorporating hydrophobic drugs and self-assembling in micrometers of nanometric size. This study investigated the effects of immobilization of the alkaline protease PR4A3 with pluronic F127 micelles on the enzyme-induced cytotoxicity. Protease immobilization was demonstrated through UV-visible and circular dichroism (CD) spectroscopies, as the enzyme interacts with the polymeric micelle of Pluronic F127 without changing its secondary structure. In addition, the immobilized form of the enzyme showed greater bioavailability after passing through the simulated gastrointestinal transit. Cell viability was assessed using the tetrazoic methylthiazole (MTT) assay. The results open perspectives for new research and development for PR4A3 in the treatment of colorectal carcinoma.
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Affiliation(s)
| | - Rachel Passos Rezende
- Departament of biological science, State University of Santa Cruz, Ilhéus, BA, Brazil
| | | | - Luiz Carlos Salay
- Departament of Exact and Technological Sciences, State University of Santa Cruz, Ilhéus, BA, Brazil
| | | | - Carla Cristina Romano
- Departament of biological science, State University of Santa Cruz, Ilhéus, BA, Brazil
| | | | - Moara Silva Costa
- Departament of biological science, State University of Santa Cruz, Ilhéus, BA, Brazil
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Gonçalves ACDS, Rezende RP, Marques EDLS, Soares MR, Dias JCT, Romano CC, Costa MS, Dotivo NC, de Moura SR, de Oliveira IS, Pirovani CP. Biotechnological potential of mangrove sediments: Identification and functional attributes of thermostable and salinity-tolerant β-glucanase. Int J Biol Macromol 2020; 147:521-526. [DOI: 10.1016/j.ijbiomac.2020.01.078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Revised: 12/14/2019] [Accepted: 01/07/2020] [Indexed: 11/25/2022]
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