Programming of Extra- and Intracellular Protein Coronation through Thiol-Independent Ligand Engineering.
basic_science · Level V
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- Record sourced from PubMed, PMID 40854303.
- Also identified by DOI 10.1021/acs.nanolett.5c03113.
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Abstract
Variation in the distal end of ligands can impact biological functions, but the effects of the proximal end of the ligand (PEL) are less clear. This study presents poly(ethylene glycol) (PEG) ligands that bind to gold beyond the gold-thiol chemistry. Biotin-PEG-modified nanomaterials showed unique protein corona-assisted uptake due to the TMSB4x orientation. All-atom molecular dynamics and super-resolution imaging reveal that TMSB4x facilitates receptor-ligand binding by expanding the pocket. Photoproximity labeling with chemoetching confirms PEL-dependent intracellular effects. For PEL as lipoic acid, gold functionalization allows nanomaterials to inhibit microfilament assembly and destabilize organelle contact sites, providing an anticancer effect without chemotherapy.
Medical subject headings
- Polyethylene Glycols
- Gold
- Sulfhydryl Compounds
- Protein Corona
- Nanostructures