Intrapleural targeted therapies (anti-VEGF and anti-EGFR) in the model of malignant pleural effusion

Oncotarget
Milena M P AcencioL R Teixeira

Abstract

Malignant pleural effusion has few options of treatment and drugs administrated by different routes can lead to a less permissive microenvironment for the development of malignant pleural disease. To analyze therapies administered intrapleurally in malignant pleural disease and to study EGFR and KRAS mutations in adenocarcinoma. Mice received LLC cells and were treated intrapleurally with anti-VEGF, anti-EGFR, anti-VEGF+anti-EGFR or saline. Animal survival, weight and mobility, volume, biochemistry and immunology of fluid, gene expression, KRAS and EGFR mutation were evaluated. All animals developed malignant effusion and presented progressive weight loss without difference between groups; however, groups treated with anti-EGFR were more active. No difference in mortality was observed. Temporal increase of volume and inflammatory markers was observed mainly in the untreated group. Gene expression in tumors was overexpressed in VEGF, EGFR and KRAS compared with normal tissue. Mutation in exon 2 of the KRAS gene was observed. Intrapleural Anti-VEGF and/or anti-EGFR reduced volume and inflammatory mediators in pleural fluid. Anti-EGFR and anti-VEGF+anti-EGFR decreased morbidity although without impact on survival. LLC tumors prese...Continue Reading

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Citations

Jun 12, 2020·Oncotarget·Rodrigo Olivio SabbionPaulo Manuel Pego Fernandes

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Methods Mentioned

BETA
Enzyme-Linked Immunoabsorbent Assay
PCR
PCRs

Software Mentioned

Geneious R9

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