DNA polymer films used as drug delivery systems to early-stage diagnose and treatment of breast cancer using 3D tumor spheroids as a model

Autor(es)

Jayme, Cristiano Ceron ; Pires, Ananda Ferreira ; Fernandes, Daniela Silvestrini ; Bi, Hong ; Tedesco, Antonio Claudio

• Tipo de documento: Artigo Científico
• Fonte: Photodiagnosis and Photodynamic Therapy; v. 37, p. 12-pg., 2022-03-01.

Resumo

The present study examines the design of DNA polymeric films (DNA-PFs) associated with aluminum chloride phthalocyanine (AlClPc) (DNA-PFs-AlClPc), as a promising drug delivery system (DDS), applicable for breast cancer treatment and early-stage diagnosis using photodynamic therapy (PDT). This study starts evaluating (MCF7) as a model for breast cancer cell behavior associated with DNA-PFs. Analyses of the morphological behaviors, biochemical reaction, and MCF7 cell adhesion profile on DNA-PFs were evaluated. SEM and AFM analysis allowed the morphological characterization of the DNA-PFs. Cell viability and cell cycle kinetics studies indicate highly biocompatible material capable of anchoring MCF7 cells, allowing the attachment and support of cell in the same structure where the insertion of AlClPc (DNA-PFs-AlClPc). The application of visible light photoactivation based on classical PDT protocol over the DNA-PFs-AlClPc showed a reduction in cell viability with increased cell death proportional to the fluency energy range from 600, 900, and 1800 mJ cm(-2). The 3D organoid system mimics the tumor microenvironment which was precisely observed in human breast cancer in early-stage progression in the body. The results observed indicate that the viability was reduced by more than 80% in monolayer culture and around 50% in the 3D organoid cell culture at the highest energy fluency (1800 mJ cm(-2)). With low energy fluency (100 mJ cm(-2),), the DNA-PFs-AlClPc did not show a cytotoxic effect on MCF7 cells, enabling the potential for photodiagnosis of early-stage human breast cancer detection in the initial stage of progression. (AU)

• Processo FAPESP: 18/10237-1 - Desenvolvimento e caracterização de scaffolds à base de PCL-PGE e DNA aplicados à engenharia de tecidos para regeneração óssea
• Beneficiário: Cristiano Ceron Jayme
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 13/50181-1 - Utilização de nanocarreadores contendo fármacos fotossensibilizantes e outros ativos aplicados à terapia celular e tratamento de patologias do sistema nervoso central
• Beneficiário: Antonio Claudio Tedesco
• Modalidade de apoio: Auxílio à Pesquisa - Temático