Polyvalent choline phosphate as a universal biomembrane adhesive
Source abstract
Abstract
Phospholipids in the cell membranes of all eukaryotic cells contain phosphatidyl choline (PC) as the headgroup. Here we show that hyperbranched polyglycerols (HPGs) decorated with the 'PC-inverse' choline phosphate (CP) in a polyvalent fashion can electrostatically bind to a variety of cell membranes and to PC-containing liposomes, the binding strength depending on the number density of CP groups per macromolecule. We also show that HPG-CPs can cause cells to adhere with varying affinity to other cells, and that binding can be reversed by subsequent exposure to low molecular weight HPGs carrying small numbers of PCs. Moreover, PC-rich membranes adsorb and rapidly internalize fluorescent HPG-CP but not HPG-PC molecules, which suggests that HPG-CPs could be used as drug-delivery agents. CP-decorated polymers should find broad use, for instance as tissue sealants and in the self-assembly of lipid nanostructures.
Source: europepmc · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Lipid Membrane Structure and Behavior · RNA Interference and Gene Delivery · Dendrimers and Hyperbranched Polymers
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (50)
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