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• W2085335204 abstract "New therapeutic strategies for the treatment of neoplastic pathologies and, in particular, metastasis processes are based on the inhibitory effect of angiogenic processes. The present article deals with the design, preparation, and application of new “polymer drugs” with a clear inhibitory effect of the activation of fibroblast growth factors, which plays an important role in the proliferation of vascular cells and, consequently, in tumor angiogenesis. Two different copolymer systems based on 5-methacrylamide-2-naphthalenesulfonic acid (MANSA) and butylacrylate (BA) or vinylpyrrolidone (VP) were prepared by free radical copolymerization and exhaustively characterized. The molecular weight of the copolymers was moderate but both families presented very homogeneous macromolecular populations with a polydispersity index very close to unity, which indicates that MANSA presents a noticeable effect on the polymerization processes. The system poly(BA-co-MANSA) provides amphiphilic copolymers that give rise to the formation of oriented micelles with a core of the hydrophobic BA segments and a shell of MANSA components. The average size of these self-assembling nanoparticles is between 20 and 100 nm, depending on the composition of the copolymer system. However, poly(VP-co-MANSA) systems are more hydrophilic and give more homogeneous and water-soluble macromolecules. The bioactivity of both systems was studied by the analysis of proliferation of Balb/c 3T3 fibroblasts in the presence of acidic fibroblast growth factor (aFGF) as a function of the concentration of poly(BA-co-MANSA) or poly(VP-co-MANSA), and the results obtained demonstrated that the MANSA-containing polymers were not toxic for cells, but induced a clear inhibition of cell proliferation in the presence of aFGF. The effect was polymer-concentration dependent, but the activity was noticeably higher for poly(BA-co-MANSA) copolymers, owing to the self-assembled micellar morphology of the nanoparticles, which placed the sulfonic groups in the more adequate position to interact with the growth factor. These systems offer a good alternative for low toxicity treatments of angiogenic, processed based on inhibition of the activity of growth factors." @default.
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• W2085335204 date "2010-06-08" @default.
• W2085335204 modified "2023-10-14" @default.
• W2085335204 title "Structure, Morphology, and Bioactivity of Biocompatible Systems Derived from Functionalized Acrylic Polymers Based on 5-Amino-2-naphthalene Sulfonic Acid" @default.
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• W2085335204 doi "https://doi.org/10.1021/bm100223d" @default.
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