proteoglycan

Copper tripeptide (GHK-Cu) is a naturally occurring copper complex of the tripeptide glycyl-L-histidyl-L-lysine, with a strong affinity for copper(II). First isolated from human plasma, it is also found in saliva and urine.

PTPσ Inhibitor ISP is a compound that binds to recombinant human PTPs, thereby inhibiting PTPσ signaling. It has the capability to penetrate membranes and counteract the inhibitory effects of chondroitin sulfate proteoglycan (CSPG) on axonal sprouting in spinal cord injury models. Additionally, it fosters remyelination in lysolecithin (LPC)-induced demyelinated spinal cords and supports the migration and maturation of oligodendrocyte progenitor cells (OPCs), enhancing remyelination and functional recovery in Multiple Sclerosis (MS) animal models [1] [2].

Osteoblast-Adhesive Peptide (Lys-Arg-Ser-Arg) acetate is an adhesion peptide utilized as a dental or orthopedic biomaterial to facilitate and strengthen the attachment of osteoblasts (anchor-dependent cells). Osteoblast adhesion is mediated through integrin and proteoglycan mechanisms. This peptide acetate may exhibit specificity for osteoblasts or bone cells in the proteoglycan-mediated adhesion process.

NG2 binding peptide is a specific short peptide that recognizes the NG2 proteoglycan and can be obtained via phage display technology. This peptide achieves precise targeting of tumor neovasculature in vitro and in vivo through interaction with NG2 binding sites. It demonstrates significant homing ability in wild-type tumor-bearing mice but shows no localization effect in NG2 knockout mice. Due to the tissue-specific expression of NG2, the NG2 binding peptide can be applied in tumor-targeted therapy, drug delivery, and molecular imaging diagnostics.