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Newer Non-ionic A(2) B(2) -Type Enzyme-Responsive Amphiphiles for Drug Delivery

"Krishna; Parshad, B.; Achazi, K.; Bottcher, C.; Haag, R.; Sharma, S. K." – 2021

A new series of nonionic gemini amphiphiles have been synthesized in a multi-step chemoenzymatic approach by using a novel A(2) B(2) -type central core consisting of conjugating glycerol and propargyl bromide on 5-hydroxy isophthalic acid. A pair of hydrophilic monomethoxy poly(ethylene glycol) (mPEG) and hydrophobic linear alkyl chains (C(12) /C(15) ) were then added to the core to obtain amphiphilic architectures. The aggregation tendency in aqueous media was studied by dynamic light scattering, fluorescence spectroscopy and cryogenic transmission electron microscopy. The nanotransport potential of the amphiphiles was studied for model hydrophobic guests, that is, the dye Nile Red and the drug Nimodipine by using UV/Vis and fluorescence spectroscopy. Evaluation of the viability of amphiphile-treated A549 cells showed them to be well tolerated up to the concentrations studied. Being ester based, these amphiphiles exhibit stimuli-responsive sensitivity towards esterases, and a rupture of amphiphilic architecture was observed in the presence of immobilized Candida antarctica lipase (Novozym 435), thus facilitating release of the encapsulated guest from the aggregate.

Title
Newer Non-ionic A(2) B(2) -Type Enzyme-Responsive Amphiphiles for Drug Delivery
Author
"Krishna; Parshad, B.; Achazi, K.; Bottcher, C.; Haag, R.; Sharma, S. K."
Publisher
ChemMedChem
Keywords
"A549 Cells; amphiphiles; Cell Survival/drug effects; cellular uptake; controlled release; Drug Carriers/*chemistry/pharmacology; drug delivery; Fungal Proteins/metabolism; Humans; Hydrolysis; Hydrophobic and Hydrophilic Interactions; Lipase/metabolism; Microscopy, Confocal; Microscopy, Electron, Transmission; nanostructures; Nanostructures/chemistry; Nimodipine/chemistry/metabolism; Oxazines/chemistry; Polyethylene Glycols/chemistry; self-assembly"
Date
2021
Identifier
1860-7187 (Electronic) 1860-7179 (Linking)
Type
Text