Endocytic Selective Toxicity of Rhodamine 6G nanoGUMBOS in Breast Cancer Cells.

Abstract:

:Herein, we report on the role of endocytosis in the selective chemotherpeutic toxicity of rhodamine 6G (R6G) based nanomaterials, i.e., nanoGUMBOS, that are derived from a group of uniform materials based on organic salts (GUMBOS). Evaluation of cellular uptake in the presence and absence of endocytosis inhibitors suggests nanoGUMBOS internalization via clathrin-mediated endocytosis in cancer cells and reveals lack of endocytic internalization in normal cells. Results from characterization of these nanomaterials suggest that endocytic internalization in cancer cells leads to nanoGUMBOS dissociation within the endosomal environment. This ultimately results in selective cytotoxicity of the nanoGUMBOS for cancer cells with no toxicity toward normal cells under examined conditions. Following examination of the selectivity mechanism, in vivo investigations were performed to examine potential therapeutic properties of these nanoparticles. Remarkably, nanoGUMBOS treatment using a mouse xenograft model reduced the tumor volume by 50% suggesting retention of in vitro therapeutic properties in vivo. These results corroborate the selective behavior of nanoGUMBOS and demonstrate their in vivo therapeutic effects, providing further insight into the possible use of these nanomaterials as potential chemotherapeutic agents.

journal_name

Mol Pharm

journal_title

Molecular pharmaceutics

authors

Bhattarai N,Mathis JM,Chen M,Pérez RL,Siraj N,Magut PKS,McDonough K,Sahasrabudhe G,Warner IM

doi

10.1021/acs.molpharmaceut.8b00339

subject

Has Abstract

pub_date

2018-09-04 00:00:00

pages

3837-3845

issue

9

eissn

1543-8384

issn

1543-8392

journal_volume

15

pub_type

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