Targeted delivery with peptidomimetic conjugated self-assembled nanoparticles.

Area of Science:

• Biomaterials Science
• Nanotechnology
• Drug Delivery Systems

Background:

• Peptides offer specific nanostructures for biological targeting but suffer from low bioavailability, immunogenicity, and poor metabolic stability.
• Peptidomimetic self-assembled nanoparticles (NPs) combine biological recognition with desirable engineering properties.
• Inorganic NPs with self-assembled coatings and target-specific ligands advance molecular imaging and targeted therapies.

Purpose of the Study:

• To review the synthesis, characterization, properties, immunogenicity, and medical applications of peptidomimetic NPs.
• To highlight the advantages of peptidomimetic NPs in overcoming peptide limitations.
• To explore their utility in diverse biomedical fields.

Main Methods:

• Review of literature on peptidomimetic NP synthesis and characterization.
• Analysis of studies on NP properties, including stability and immunogenicity.
• Compilation of applications in imaging, drug delivery, vaccination, tissue engineering, and intracellular delivery.

Main Results:

• Peptidomimetic NPs demonstrate enhanced interaction with cell receptors, leading to higher uptake and reduced drug resistance.
• Self-assembled NPs with peptidomimetic antigens facilitate sustained antigen presentation for adaptive immune responses.
• Cell-penetrating peptide-conjugated NPs serve as effective intracellular delivery vectors for gene and plasmid delivery.

Conclusions:

• Peptidomimetic NPs represent a versatile platform for advanced biomedical applications.
• They offer significant improvements in targeting, stability, and efficacy compared to native peptides.
• Their application spectrum spans molecular imaging, targeted cancer therapy, vaccination, tissue engineering, and intracellular delivery.