Lipid nanoparticle carrier (LNP (when referring specifically to "lipid nanoparticle" in context of nucleic acid/RNA delivery))

Lipid nanoparticle carriers are nanoscale vesicles composed of solid and/or liquid lipids, often stabilized by surfactants or emulsifiers, that serve as delivery systems for a variety of therapeutic agents including small molecule drugs, nucleic acids, and proteins[1][2][3][7][8]. LNPs are not themselves biologically active molecular targets, but function as biomimetic carriers—many composed of ionizable/cationic lipids, phospholipids, cholesterol, and polyethylene glycol (PEG)-modification—that encapsulate and protect their cargo, facilitate cellular uptake, and release the drug inside the target cell[1][8]. They have been widely used as essential components of mRNA vaccines, gene therapies, and cancer therapeutics. Their use improves solubility, stability, and bioavailability of drugs, enables targeted and controlled release, and can minimize off-target toxicity by concentrating drugs in diseased tissues via mechanisms like the enhanced permeability and retention (EPR) effect[6][7]. LNPs are a technological platform rather than a specific therapeutic target; all clinical interactions are with their payload, not with the carrier itself[1][7]. Safety and therapeutic efficacy depend on their composition, surface chemistry, and the properties of the loaded drug[3][9]. **Explanation regarding is_target and is_incorrect:** - **Lipid nanoparticle carrier** is **not a therapeutic target** (such as a receptor, enzyme, or transporter). It is a synthetic delivery platform and thus should be classified as **is_target: false** and **is_incorrect: true** with regards to molecular or receptor-based target lists used in pharmacology. All relevant biology applies to the payloads (e.g. mRNA, siRNA, drugs) delivered by these carriers, not to the carrier itself[1][3][7].

Other names

Lipid nanoparticleLipid-based nanoparticleLBNPNanostructured lipid carrier (related but not identical)Solid lipid nanoparticle (related but not identical)

Protection and delivery of payload (API, RNA, DNA, oligonucleotide) to target cell via endocytosis, enhanced permeability and retention (EPR) effect for tumor targeting, endosomal escape mechanisms for nucleic acid release