Cytotoxicity, cellular uptake, and subcellular localization of a nitrogen oxide and aminopropyl-beta-lactose derivative ruthenium complex used as nitric oxide delivery agent

Autor(es)

dos Santos, Joicy Santamalvina ^{[1, 2]} ; Ramos, Loyanne C. ^[1] ; Ferreira, Lucimara P. ^[3] ; Campo, Vanessa Leira ^{[1, 4]} ; de Rezende, Lucas C. D. ^[1] ; Emery, Flavio da Silva ^[1] ; da Silva, Roberto Santana ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Fac Ciencias Farmaceut Ribeirao Preto, Dept Fis & Quim, Av Prof Zeferino Vaz S-N, BR-14040903 Ribeirao Preto, SP - Brazil

^[2] Univ Fed Bahia, Inst Quim, Dept Quim Geral & Inorgan, Rua Barao Geremoabo, 147 Campus Univ Ondina, BR-40170115 Salvador, BA - Brazil

^[3] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Dept Fis, Av Bandeirantes 3900, BR-14040901 Ribeirao Preto, SP - Brazil

^[4] Barao Maua Univ Ctr, 423 Ramos de Azevedo St, BR-14090180 Ribeirao Preto, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: NITRIC OXIDE-BIOLOGY AND CHEMISTRY; v. 86, p. 38-47, MAY 1 2019.
• Citações Web of Science: 2

Resumo

This work investigates how the luminescent ruthenium-nitrite complexes cis-(Ru(PY-bodipy)(dcbpy)(2)(NO2)] (PF6) (I) and cis-(Ru(py-bodipy)(dcbpy-aminopropyl-beta-lactose)(2)(NO2)](PF6) (II) behave toward the melanoma cancer cell line B16F10. The chemical structure and purity of the synthesized complexes were analyzed by UV-Visible and FTIR spectroscopy, MALDI, HPLC, and H-1 NMR. Spectrofluorescence helped to determine the fluorescence quantum yields and lifetimes of each of these complexes. In vitro MTT cell viability assay on B16F10 cancer cells revealed that the complexes possibly have a tumoricidal role. The metal-nitrite complexes evidenced the dichotomous NO nature: at high concentration, NO exerted a tumoricidal effect, whereas cancer cells grew at low NO concentration. Flow cytometry or fluorescence microscopy aided cellular uptake calculation. Cell staining followed by fluorescence microscopy associated with organelle markers such as DAPI and Rhodamine 123 detected preferential intracellular localization of the ruthenium-nitrite py-bodipy and aminopropyl lactose derivative ruthenium complex in mitochondria. Thus, the cytotoxicity of compounds (I) and (II) against B16F10 cancer cell line show concentration-dependent results. The present studies suggest that nitric oxide ruthenium derivative compounds could be new potential chemotherapeutic agents against cytotoxic cells. (AU)

• Processo FAPESP: 16/12707-0 - Citotoxicidade e foto-citotoxicidade de compostos rutênio-ftalocianinas como produtores de óxido nítrico e oxigênio singleto em linhagens de células cancerígenas. Proposta para uma nova classe de metalo-drogas
• Beneficiário: Roberto Santana da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Regular