Chorioallantoic urothelial tumor avatar. A clinical tool for phenotype-based therapy

Autor: Marina Vian Ossick, Karen Linares Ferrari, Igor Nunes-Silva, Fernandes Denardi, Leonardo Oliveira Reis
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Acta Cirúrgica Brasileira, Vol 34, Iss 12 (2020)
Druh dokumentu: article
ISSN: 0102-8650
DOI: 10.1590/s0102-865020190120000007
Popis: Abstract In the muscle invasive bladder cancer (MIBC) standard of care treatment only patients presenting a major pathological tumor response are more likely to show the established modest 5% absolute survival benefit at 5 years after cisplatin-based neoadjuvant chemotherapy (NAC). To overcome the drawbacks of a blind NAC (i.e. late cystectomy with unnecessary NAC adverse events) with potential to survival improvements, preclinical models of urothelial carcinoma have arisen in this generation as a way to pre-determine drug resistance even before therapy is targeted. The implantation of tumor specimens in the chorioallantoic membrane (MCA) of the chicken embryo results in a high-efficiency graft, thus allowing large-scale studies of patient-derived “tumor avatar”. This article discusses a novel approach that exploits cancer multidrug resistance to provide personalized phenotype-based therapy utilizing the MIBC NAC dilemma.
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