I. Product Introduction

DSPE-PEG-NH-Boc, namely α-tert-butyloxycarbonylamino-ω-1,2-distearoyl-sn-glycero-3-phosphoethanolamine-polyethylene glycol, is a functionalized PEG lipid excipient used in lipid nanoparticle (LNP) and liposome delivery systems.

This molecule consists of three parts: a hydrophobic lipid structure (DSPE), a hydrophilic PEG segment, and a terminal Boc-protected amino group. The DSPE structure can participate in the formation of lipid membranes and nanoparticle structures; the PEG segment modulates the surface properties of lipid particles and enhances system stability; and the terminal Boc-protected amino group provides a reactive site for subsequent functionalization modifications.

With its amphiphilic structure and modifiable characteristics, DSPE-PEG-NH-Boc can be applied to surface modification of LNP, liposomes, and other nano-delivery systems, as well as targeted delivery, bioconjugation, and nanomaterial functionalization research.

Basic Information:

II. Structural Characteristics and Mechanism of Action

1. DSPE Lipid Structure: Participation in Lipid System Construction
DSPE (Distearoylphosphatidylethanolamine), as the lipid core structure, contains two hydrophobic fatty acid chains that can embed into the lipid bilayer structure through hydrophobic interactions.

In LNP or liposome systems, the DSPE structure helps maintain the stability of lipid assembly and provides a foundation for the attachment of PEG chains and functional groups.

2. PEG Segment: Modulation of Particle Surface Properties
The PEG chain possesses good hydrophilicity and biocompatibility, forming a hydrophilic layer on the surface of lipid particles and improving the dispersion stability of the nano-system in aqueous environments.

Through the introduction of the PEG segment, DSPE-PEG-NH-Boc can modulate the interfacial properties of lipid particles, providing spatial support for subsequent functionalization modifications.

3. Boc-Protected Amino Group: Providing a Controllable Modification Interface
The terminal Boc-protected amino group is a stable protective functional group that can be deprotected under appropriate conditions to release the reactive amino group.

After deprotection, the amino group can be further conjugated with active esters, fluorescent molecules, targeting ligands, and other functional molecules, enabling surface functionalization design of LNPs.

III. Main Applications

1. Construction of LNP and Liposome Delivery Systems
DSPE-PEG-NH-Boc can serve as an auxiliary lipid component in LNP and liposome systems to modulate particle surface properties and enhance the design flexibility of delivery systems.

2. Surface Functionalization of Lipid Nanoparticles
Leveraging the lipid-binding capability of DSPE and the interface-modulating role of the PEG segment, DSPE-PEG-NH-Boc can be used to construct nano-delivery systems with functionalized surfaces.

Following Boc deprotection, the terminal amino group can be further conjugated with targeting molecules to achieve specific functional modifications.

3. Targeted Delivery Research
The activated amino group can be used to conjugate functional molecules such as antibodies, peptides, and aptamers to construct lipid delivery systems with recognition capability, providing material support for targeted drug delivery research.

4. Bioconjugation and Nanomaterial Modification
DSPE-PEG-NH-Boc can serve as a lipid-functional molecule linking module for biomolecule conjugation, nanomaterial surface modification, and functionalized biointerface construction.

IV. Related LNP Lipid Products