Lagunas, Anna published the artcileCell adhesion and focal contact formation on linear RGD molecular gradients: study of non-linear concentration dependence effects, Formula: C18H34N4O5S, the publication is Nanomedicine (New York, NY, United States) (2012), 8(4), 432-439, database is CAplus and MEDLINE.
Cell adhesion onto bioengineered surfaces is affected by a number of variables, including the former substrate derivatization process. In this investigation, we studied the correlation between cell adhesion and cell-adhesive ligand surface concentration and organization due to substrate modification. For this purpose, Arg-Gly-Asp (RGD) gradient surfaces were created on poly(Me methacrylate) substrates by continuous hydrolysis and were then grafted with biotin-PEG-RGD mols. Cell culture showed that adhesion behavior changes in a nonlinear way in the narrow range of RGD surface densities assayed (2.8 to 4.4 pmol/cm2), with a threshold value of 4.0 pmol/cm2 for successful cell attachment and spreading. This nonlinear dependence may be explained by nonhomogeneous RGD surface distribution at the nanometer scale, conditioned by the stochastic nature of the hydrolysis process. Atomic force microscopy anal. of the gradient surface showed an evolution of surface morphol. compatible with this hypothesis. The authors observed by AFM nonlinear dependence of cell adhesion on RGD gradient surfaces with different surface densities. The nonlinear characteristics may be explained by non-homogeneous RGD surface distribution at the nanometer scale, conditioned by the stochastic nature of the hydrolysis process.
Nanomedicine (New York, NY, United States) published new progress about 359860-27-8. 359860-27-8 belongs to imidazoles-derivatives, auxiliary class Other Aliphatic Heterocyclic,Chiral,Amine,Amide,Ether,Inhibitor, name is N-(2-(2-(2-(2-Aminoethoxy)ethoxy)ethoxy)ethyl)-5-((3aS,4S,6aR)-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)pentanamide, and the molecular formula is C18H34N4O5S, Formula: C18H34N4O5S.
Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem