2020
DOI: 10.1021/acsnano.0c07071
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Engineering of Cascade-Responsive Nanoplatform to Inhibit Lactate Efflux for Enhanced Tumor Chemo-Immunotherapy

Abstract: As an increased product of high-rate aerobic glycolysis in tumors, lactate could regulate the immunosuppressive tumor microenvironment (TME). A PEG-CDM surface modified, GSH-dependent responsive hollow mesoporous organosilica nanoplatform loaded with hydroxycamptothecin (HCPT) and siMCT-4 was administrated for synergistic tumor chemo-immunotherapy. The nanoplatform cascaded responded to the weak acid TME and the high level of GSH in tumor cells. HCPT and siMCT-4 were continuously released from the nanoplatform… Show more

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Cited by 102 publications
(98 citation statements)
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“…As such, high glycolytic (A) Inositol Phosphate Metabolism pathway (B) Tryptophan metabolism rates of cancer cells can lead to the increased generation of lactate and an accumulation of H+ ions, which ultimately induce an acidified tumor microenvironment [37]. The presence of MCT2 facilitates the relocation of lactic acid and enhances its utilization as an energy substrate, thereby reducing glycolysis and preventing pro-tumoral polarity changes in TAMs while preserving the innate immune cell function [5,[38][39][40]. Furthermore, MCT2 has been reported to be located in the mitochondria with a role for mitochondrial metabolism, and inhibition of MCT2 suppresses colorectal cancer progression via the induction of mitochondrial dysfunction [41].…”
Section: Discussionmentioning
confidence: 99%
“…As such, high glycolytic (A) Inositol Phosphate Metabolism pathway (B) Tryptophan metabolism rates of cancer cells can lead to the increased generation of lactate and an accumulation of H+ ions, which ultimately induce an acidified tumor microenvironment [37]. The presence of MCT2 facilitates the relocation of lactic acid and enhances its utilization as an energy substrate, thereby reducing glycolysis and preventing pro-tumoral polarity changes in TAMs while preserving the innate immune cell function [5,[38][39][40]. Furthermore, MCT2 has been reported to be located in the mitochondria with a role for mitochondrial metabolism, and inhibition of MCT2 suppresses colorectal cancer progression via the induction of mitochondrial dysfunction [41].…”
Section: Discussionmentioning
confidence: 99%
“…Finally, lactate promotes the infiltrations of immunosuppressive cells, including M2 macrophages-like tumor-associated macrophages [ 63 ], N2 neutrophils-like tumor-associated neutrophils [ 125 ], bone marrow-derived myeloid suppressor cells (MDSCs) [ 126 ] and Tregs cells [ 127 ], which effectively inhibits the ant-tumor immune responses and promote immune escape. Therefore, reducing the accumulation and acidification of lactate in the TME is an important link to activate tumor immunity [ 128 ].…”
Section: Comprehensive Antitumor Therapeutic System Of “Metal-oxidase” System Combined With Other Therapiesmentioning
confidence: 99%
“…As is already well-known, the TME is characterized by high GSH with concentration 7-10 times higher than that of normal tissues. Therefore, GSH could act as an endogenous stimulus to trigger the release of NO [172,173]. Song et al previously synthesized a new type of NO donor, named a nitrate-functionalized D-α-tocopheryl polyethylene glycol succinate (TNO 3 ).…”
Section: Glutathione-triggered No Nanomedicinesmentioning
confidence: 99%
“…Tumor cells produce a large amount of lactic acid because of their rapid growth and enhanced glycolysis metabolism, leading to the weakly acidic TME (pH 6.5~6.8) [174,175]. Therefore, an increasingly number of studies have taken advantage of the acidic TME and designed different pH-responsive NO-releasing nanomedicines based on it in recent years [173,[176][177][178]. For example, Sung et al designed a pH-sensitive release nanosystem loaded with chemotherapeutic drugs and the NO donor diethylenetriamine diazeniumdiolate (DETA NONOate).…”
Section: Ph-triggered No Nanomedicinesmentioning
confidence: 99%