title: PLGA nanofibers improves the antitumoral effect of daunorubicin.
abstract: The objective of this study was to evaluate the in vivo anti-inflammatory angiogenesis activity and in vitro cytotoxicity on normal and cancer cell models of a drug delivery system consisting of poly(lactic-co-glycolic acid) nanofibers loaded with daunorubicin (PLGA-DNR) that were fabricated using an electrospinning process. The PLGA-DNR nanofibers were also characterized by thermogravimetric analysis (TGA), differential thermal analysis (DTA) and differential scanning calorimetry (DSC), X-ray diffraction (XRD), scanning electron microscopy (SEM) and confocal fluorescence microscopy. In vitro release of DNR from the nanofibers and its corresponding mechanism were also evaluated. Sixty-five percent of the DNR was released in an initial burst over 8h, and by 1224 h, eighty-five percent of the DNR had been released. The Higuchi model yielded the best fit to the DNR release profile over the first 8h, and the corresponding data from 24 to 1224 h could be modeled using zero-order kinetics. The PLGA-DNR nanofibers exhibited a higher cytotoxicity to A431 cells than free DNR but a cytotoxicity similar to free DNR against fibroblast cells. A higher antiangiogenic effect of PLGA nanofibers was observed in the in vivo data when compared to free DNR, and no inflammatory potential was observed for the nanofibers.
authors.affiliation: Chemistry Department, Institute of Exact Sciences, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, CEP 31270-901 Belo Horizonte, MG, Brazil.
authors.forename: Pedro P G
authors.initials: PP
authors.lastname: Guimarães
authors.affiliation: Chemistry Department, Institute of Exact Sciences, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, CEP 31270-901 Belo Horizonte, MG, Brazil.
authors.forename: Michele F
authors.initials: MF
authors.lastname: Oliveira
authors.affiliation: Chemistry Department, Institute of Exact Sciences, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, CEP 31270-901 Belo Horizonte, MG, Brazil.
authors.forename: Alinne D M
authors.initials: AD
authors.lastname: Gomes
authors.affiliation: Department of Restorative Dentistry, Faculty of Dentistry, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, CEP 31270-901 Belo Horizonte, MG, Brazil.
authors.forename: Sávio M L
authors.initials: SM
authors.lastname: Gontijo
authors.affiliation: Department of Restorative Dentistry, Faculty of Dentistry, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, CEP 31270-901 Belo Horizonte, MG, Brazil.
authors.forename: Maria E
authors.initials: ME
authors.lastname: Cortés
authors.affiliation: Department of General Pathology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, CEP 31270-901 Belo Horizonte, MG, Brazil.
authors.forename: Paula P
authors.initials: PP
authors.lastname: Campos
authors.affiliation: Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, CEP 31270-901 Belo Horizonte, MG, Brazil.
authors.forename: Celso T R
authors.initials: CT
authors.lastname: Viana
authors.affiliation: Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, CEP 31270-901 Belo Horizonte, MG, Brazil.
authors.forename: Silvia P
authors.initials: SP
authors.lastname: Andrade
authors.affiliation: Chemistry Department, Institute of Exact Sciences, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, CEP 31270-901 Belo Horizonte, MG, Brazil. Electronic address: sinisterra@ufmg.br.
authors.forename: Rubén D
authors.initials: RD
authors.lastname: Sinisterra
mesh_terms: D000818:Animals; D000903:Antibiotics, Antineoplastic / Q000494:pharmacology*; D002460:Cell Line; D045744:Cell Line, Tumor; D003630:Daunorubicin / Q000494:pharmacology*; D006801:Humans; D019344:Lactic Acid / Q000737:chemistry*; D008297:Male; D051379:Mice; D008855:Microscopy, Electron, Scanning; D008856:Microscopy, Fluorescence; D057139:Nanofibers; D011100:Polyglycolic Acid / Q000737:chemistry*; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D014961:X-Ray Diffraction
chemical_list: D000903:Antibiotics, Antineoplastic; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D011100:Polyglycolic Acid; D019344:Lactic Acid; D003630:Daunorubicin
keywords: Daunorubicin; Drug delivery system; Electrospinning; PLGA nanofibers