Tissue protein crosslinking via NHS-functionalized PEG hydrogel formation

Tissue protein crosslinking via NHS-functionalized PEG hydrogel formation refers to the chemical process by which proteins—typically those present in tissues or added as part of an engineered construct—are covalently linked using polyethylene glycol (PEG) molecules that have been functionalized with N-hydroxysuccinimide esters (NHS). The NHS group reacts specifically with primary amines on lysine residues of proteins, forming stable amide bonds and resulting in the creation of a three-dimensional hydrogel network. This approach is widely used in tissue engineering and regenerative medicine to create biocompatible scaffolds that can encapsulate cells, control mechanical properties, modulate degradation rates, and serve as vehicles for controlled drug release. The process does not refer to a single molecular target such as an enzyme or receptor but rather describes a synthetic strategy for modifying bulk materials at the molecular level through well-characterized organic reactions[1][2][3][5]. This entry is *not* considered a therapeutic "target" in the conventional sense—it is neither an endogenous molecule nor directly targeted by drugs—but rather describes an enabling chemical method/technology platform. If you are seeking information about specific biological targets involved with PEG hydrogels' interaction with cells or tissues, further clarification would be needed.

Other names

NHS-PEG hydrogel crosslinkingPolyethylene glycol N-hydroxysuccinimide ester-mediated tissue crosslinkingPEG-NHS hydrogel formationProtein–PEG–NHS conjugation for hydrogels