Graphene Quantum Dot Assisted Translocation of Daunomycin through an Ordered Lipid Membrane: A Study by Fluorescence Lifetime Imaging Microscopy and Resonance Energy Transfer.
Riya SinhaArunavo ChatterjeePradipta PurkayasthaPublished in: The journal of physical chemistry. B (2022)
Daunomycin (DN) is a well-known chemotherapy drug frequently used in treating acute myeloid and lymphoblastic leukemia. It needs to be delivered to the therapeutic target by a delivering agent that beats the blood-brain barrier. DN is known to be specifically located at the membrane surface and scantly to the bilayer. Penetration of DN into the membrane bilayer depends on the molecular packing of the lipid. It does not travel promptly to the interior of the cells and needs a carrier to serve the purpose. Here, we have demonstrated, by fluorescence lifetime imaging spectroscopy (FLIM) and resonance energy transfer (RET) phenomenon, that ultrasmall graphene quantum dots (GQDs) can be internalized into the aqueous pool of giant unilamellar vesicles (GUVs) made from dipalmitoylphosphatidylcholine (DPPC) lipids, which, in turn, help in fast translocation of DN through the membrane without any delivery vehicle.
Keyphrases
- energy transfer
- quantum dots
- high resolution
- single molecule
- sensitive detection
- acute myeloid leukemia
- bone marrow
- fatty acid
- induced apoptosis
- room temperature
- liver failure
- emergency department
- drug induced
- ionic liquid
- mass spectrometry
- locally advanced
- intensive care unit
- rectal cancer
- rare case
- living cells
- photodynamic therapy
- single cell
- adverse drug