A similar 3A mutation engineered into C2 and C41 cDNAs also improved viral replication (2 8 fold) in HeLa but the heparan sulfate mediated cell-binding enhancement by the VP1 change was C15-specific.
Chromatin accessibility was proposed to be a key principle for receptor binding and in mediating cell-specific binding events.
Known binding partners mediating cell interactions with vitronectin-containing tissues include integrins (αVβ3, αVβ5, αVβ1, αVβ6, αVβ8, and αIIbβ3) and the urokinase receptor.
CS plays a key role in bone development, remodeling, and healing by interacting with other molecules of the ECM, mediating cell adhesion, and providing the binding of different growth factors or cytokines on the ECM [ 11, 20, 28, 33, 36, 37].
The binding of the E-selectin/Fc recombinant to metastatic breast cancer cells was largely reduced by removal of sLex moieties from tumor cell surfaces (Fig. 2 and Fig. 6C), suggesting that the E-selectin binding protein(s) in metastatic breast cancer cells are decorated with sLex moieties and that sLex moieties play a significant role in mediating tumor cell binding to E-selectin.
In contrast, MUC16 has also been demonstrated to mediate cell adhesion by binding to other cell surface glycoproteins such as galectin-1 and mesothelin [14], [15].
There are several mechanisms that can mediate cell type-specific binding.
The cysteine-rich domain of ADAM12 can also mediate cell adhesion by binding cell surface syndecans [ 6, 32].
Col5a1 is a member of Type V collagen family, which mediates cell adhesion by binding preferentially to α2β1 integrin [ 50].
Interestingly, the extent of RGD peptide-mediated cell-ECM binding inhibition was significantly more pronounced in ADAMTS-12 expressing cells than in LacZ expressing cells cultured on their own native ECM (p≤0.01 versus p≤0.05).
