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Cellular toxicity was dictated more by lipid composition than by the internal particle nanostructure or the uptake mechanism.
Abstract
Cubosomes form part of the next generation of lipid nanoparticle drug delivery vehicles, enabling higher drug encapsulation efficiency, particularly for lipophilic drugs, compared to traditional liposome formulations. However, the mechanism of interaction of cubosome lipid nanoparticles with cells and their resultant cytotoxicity is not yet well characterised. We hypothesise that the uptake mechanism is dependent on the cell-type, and that cellular toxicity will be controlled by both the lipid composition and the uptake mechanism. The uptake of cubosomes into fibroblast and macrophage cell lines was investigated using live-cell imaging on a confocal microscope. Toxicity of the lipid particles was determined using Fluorescence-Activated Cell Sorting (FACS). Atomic Force Microscopy (AFM) provided an overview of the topography of the surface of individual cells. The cells exhibited a contrast in uptake kinetics depending on cell type attributed to varying uptake mechanisms. Cellular toxicity was dictated more by lipid composition than by the internal particle nanostructure or the uptake mechanism. Surface topography showed many surface ridges in the STO cells which could provide a location for cubosome adhesion prior to uptake. The findings provide a crucial guideline for the future engineering and application of lipid nanoparticles in drug delivery applications.
Keywords: Cellular uptake; Cubosome; Hexosome; Toxicity.
Why are your liposomal formulations liquid and not in the powder form?
Liposomes are produced in a liquid atmosphere. When liposomal formulations are dried, the structure of the liposomes can no longer be maintained, and the liposomes dissociate. We conducted a bioavailability study that compared liquid and powder forms of vitamin C. This study proved that the bioavailability of the powdered liposomal form was as poor as a non-liposomal powder product. In comparison, the liquid liposomal vit. C had a very high bioavailability. Our Business Development Team will be happy to explain this process in detail
originally posted by: DaRAGE
a reply to: Zanti Misfit
It's completely off topic, non-related, and certainly adds nothing of merit to the topic of conversation of this thread.
I mean, I could say a "medicinal delivery system" was used in Deus Ex, the video game, which enabled humans to be augmented in that sci-fi setting.
It adds nothing to the conversation and topic at hand.
We are discussing lipid nano-particles (liposomes), and potential toxicity, which might certainly outway the benefits of the "medicine" or "supplements" being released directly into the blood stream that way, being more bio-available to the body.
originally posted by: DaRAGE
Well I just asked bings new ChatGPT...
Question: "how damaging are lipids (fats) being introduced to the blood stream" -
Answer:
Lipids are fatty, waxy, or oily compounds that are essential to many body functions and serve as the building blocks for all living cells1. However, when LDL cholesterol levels are too high, it can harm the body by increasing the risk for premature atherosclerotic cardiovascular diseases (ASCVD)2. When the LDL level is higher than 130, fat can build up in the walls of your blood vessels. This fat can plug up your arteries and keep the blood from flowing through them. If an artery going to your heart gets blocked, you might have a heart attack. If an artery going to your brain gets blocked, you might have a stroke3.