N-(2-hydroxy)-propyl-3-trimethylammonium, O-palmitoyl chitosan: Synthesis, physicochemical and biological properties

Made available in DSpace on 2021-06-26T06:17:21Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-05-01 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Auxilio Financeiro a Projeto Educacional ou de Pesquisa Two samples of N-(2-hydroxy)-propyl-3-trimethylammonium, O-palmitoyl chitosan (DPCat) with different av-erage degrees of quaternization named as DPCat35 (DQ = 35%) and DPCat80 (DQ = 80%), were successfully syn-thesized by reacting glycidyltrimethylammonium chloride (GTMAC) with O-palmitoyl chitosan (DPCh) derivative (DS = 12%). Such amphiphilic derivatives of chitosan were fully water-soluble at 1.0 < pH < 12.0 and showed significant electrostatic stability enhancement of a self-assembly micellar nanostructure (100 & ndash;320 nm) due to its positively-charged out-layer. In vitro mucoadhesive and cytotoxicity essays toward healthy fibroblast cells (Balb/C 3T3 clone A31 cell), human prostate cancer (DU145) and liver cancer (HepG2/ C3A) cell lines revealed that the biological properties of DPCat derivatives were strongly dependent on DQ. Ad-ditionally, DPCat35 had better interactions with the biological tissue and with mucin glycoproteins at pH 7.4 as well as exhibited potential to be used on the development of drug delivery systems for prostate and liver cancer treatment. (c) 2021 Elsevier B.V. All rights reserved. Sao Paulo State Univ, Inst Chem, Av Prof Francisco Degni 55,237, BR-14800900 Araraquara, SP, Brazil Univ Sao Paulo, Sao Carlos Inst Chem, Av Trabalhador Sao Carlense 400,780, BR-13566590 Sao Carlos, SP, Brazil Brazilian Corp Agr Res, Embrapa Instrumentat, Rua XV Novembro 1452, BR-13560970 Sao Carlos, SP, Brazil Sao Paulo State Univ, Sch Pharmaceut Sci, Rod Araraquara Jau Km 01 S-N, BR-14800903 Araraquara, SP, Brazil Sao Paulo State Univ, Inst Chem, Av Prof Francisco Degni 55,237, BR-14800900 Araraquara, SP, Brazil Sao Paulo State Univ, Sch Pharmaceut Sci, Rod Araraquara Jau Km 01 S-N, BR-14800903 Araraquara, SP, Brazil FAPESP: FAPESP 2016/20970-2 FAPESP: 2017/20973-4 FAPESP: 2019/13656-8 CNPq: CNPq 141353/2016-3 CNPq: 150964/2017-0 CNPq: 309568/2019-6 CAPES: 001 Auxilio Financeiro a Projeto Educacional ou de Pesquisa: AUXPE 139/2015