PMID- 33465891 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210120 IS - 2373-9878 (Electronic) IS - 2373-9878 (Linking) VI - 2 IP - 12 DP - 2016 Dec 12 TI - Nanoparticle-Facilitated Membrane Depolarization-Induced Receptor Activation: Implications on Cellular Uptake and Drug Delivery. PG - 2153-2161 LID - 10.1021/acsbiomaterials.6b00338 [doi] AB - Cell-specific uptake of drug delivery systems (DDSs) are crucial to achieve optimal efficacy of many drugs. Widely employed strategies to facilitate targeted intracellular drug delivery involves attachment of targeting ligands (peptides or antibodies) to DDSs. Target receptors mutations can limit the effectiveness of this approach. Herein, we demonstrate, through in vitro inhibitory and drug delivery studies, that graphene nanoribbons (GNRs), water dispersed with the amphiphilic polymer called PEG-DSPE ((1, 2-distearoyl-sn-glycero-3-phosphoethanolamine-N [amino (polyethylene glycol)]) (induce membrane depolarization-mediated epidermal growth factor receptor (EGFR) activation. This phenomenon is ligand-independent and EGFR activation occurs via influx of Ca(2+) ions from the extracellular space. We further provide evidence, through in vivo studies, that this mechanism could be exploited to facilitate efficacious drug delivery into tumors that overexpress EGFR. The results suggest that transient membrane depolarization-facilitated cell receptor activation can be employed as an alternate strategy for enhanced intracellular drug delivery. FAU - Chowdhury, Sayan Mullick AU - Chowdhury SM AD - Department of Biomedical Engineering, Stony Brook University, Stony Brook, New York 11794, United States. FAU - Xie, Shawn AU - Xie S AD - Department of Biomedical Engineering, Stony Brook University, Stony Brook, New York 11794, United States. FAU - Fang, Justin AU - Fang J AD - Department of Biomedical Engineering, Stony Brook University, Stony Brook, New York 11794, United States. FAU - Lee, Stephen K AU - Lee SK AD - Department of Biomedical Engineering, Stony Brook University, Stony Brook, New York 11794, United States. FAU - Sitharaman, Balaji AU - Sitharaman B AD - Department of Biomedical Engineering, Stony Brook University, Stony Brook, New York 11794, United States. LA - eng PT - Journal Article DEP - 20161028 PL - United States TA - ACS Biomater Sci Eng JT - ACS biomaterials science & engineering JID - 101654670 SB - IM OTO - NOTNLM OT - cancer OT - drug delivery OT - graphene nanoribbons OT - membrane depolarization OT - targeting EDAT- 2016/12/12 00:00 MHDA- 2016/12/12 00:01 CRDT- 2021/01/20 01:00 PHST- 2021/01/20 01:00 [entrez] PHST- 2016/12/12 00:00 [pubmed] PHST- 2016/12/12 00:01 [medline] AID - 10.1021/acsbiomaterials.6b00338 [doi] PST - ppublish SO - ACS Biomater Sci Eng. 2016 Dec 12;2(12):2153-2161. doi: 10.1021/acsbiomaterials.6b00338. Epub 2016 Oct 28.