Anti-invasive adjuvant therapy with imipramine blue enhances chemotherapeutic efficacy against glioma.

Published

Journal Article

The invasive nature of glioblastoma (GBM) represents a major clinical challenge contributing to poor outcomes. Invasion of GBM into healthy tissue restricts chemotherapeutic access and complicates surgical resection. Here, we test the hypothesis that an effective anti-invasive agent can "contain" GBM and increase the efficacy of chemotherapy. We report a new anti-invasive small molecule, Imipramine Blue (IB), which inhibits invasion of glioma in vitro when tested against several models. IB inhibits NADPH (reduced form of nicotinamide adenine dinucleotide phosphate) oxidase-mediated reactive oxygen species generation and alters expression of actin regulatory elements. In vivo, liposomal IB (nano-IB) halts invasion of glioma, leading to a more compact tumor in an aggressively invasive RT2 syngeneic astrocytoma rodent model. When nano-IB therapy was followed by liposomal doxorubicin (nano-DXR) chemotherapy, the combination therapy prolonged survival compared to nano-IB or nano-DXR alone. Our data demonstrate that nano-IB-mediated containment of diffuse glioma enhanced the efficacy of nano-DXR chemotherapy, demonstrating the promise of an anti-invasive compound as an adjuvant treatment for glioma.

Full Text

Duke Authors

Cited Authors

  • Munson, JM; Fried, L; Rowson, SA; Bonner, MY; Karumbaiah, L; Diaz, B; Courtneidge, SA; Knaus, UG; Brat, DJ; Arbiser, JL; Bellamkonda, RV

Published Date

  • March 2012

Published In

Volume / Issue

  • 4 / 127

Start / End Page

  • 127ra36 -

PubMed ID

  • 22461640

Pubmed Central ID

  • 22461640

Electronic International Standard Serial Number (EISSN)

  • 1946-6242

International Standard Serial Number (ISSN)

  • 1946-6234

Digital Object Identifier (DOI)

  • 10.1126/scitranslmed.3003016

Language

  • eng