Screening da atividade antiproliferativa e investigação toxicológica in vitro e in vivo de compostos de coordenação

• Ano de defesa: 2015
• Autor(a) principal: Lopes, Érica de Oliveira [UNESP]
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual Paulista (Unesp)
• Palavras-chave em Português: Toxicidade Aguda; Biodisponibilidade; Microbiologia; Citotoxidade de mediação celular; Cancer
• Link de acesso: http://hdl.handle.net/11449/132630; http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/22-12-2015/000856194.pdf

Cancer is a group of diseases that have in common the uncontrolled cell growth that invades the tissues and organs and can spread to other parts of the body (metastasis). A number of genetic and epigenetic changes, that are associated with DNA and influence gene expression, cause cancer. In the last decades, cancer has gained a bigger dimension becoming an evident problem of global public health and is one of the leading cause of death worldwide. The development of drugs for the treatment of cancer is possible through screening of molecules using tumor cell lines or alternative methods that reduce the number of experimental animals. In a second step, in vivo assays in conventional model should ensure toxicological safety and confirm the bioavailability of the molecule. Thus, this study aims to evaluate the antiproliferative activity against the tumor cell lines (HepG2, HeLa, MDA-MB-231, K-562, DU 145), the mutagenic profile, toxicity in normal cell line (MRC-5) through the alternative method (Artemia salina L.) and BALB/c mice, and also, the coordination compound (Mn, Co and Zn) in vivo oral bioavailability. Although all the molecules studied have presented effect on tumor cell lines, and the cobalt complexes [Co(atc-Et)2]Cl and [Co(atc-Ph)2]Cl showed the best selectivity index (SI). In the acute toxicity test in Artemia salina L. only three complexes [Mn(atc)2], [Mn(atc-Me)2] and [Co(atc-Ph)2]Cl proved to be toxic to the microcrustacean, while that the acute toxicity in mice only one complex ([Mn(atc-Me)2]) presented toxic effect. Quantitative biochemical parameters (ALT and AST), as well as the relative weight of the organs of the animals showed no statistical difference. In the Ames test mutagenicity was observed only in three manganese complexes [Mn(atc-Me)2], [Mn(atc-Ch)2] and [Mn(atc-Ph)2]. As regards the quantification of the via ICP-OES oral bioavailability of plasma ...