Temperature switchable glycopolymers and their conformation-dependent binding to receptor targets.
Temperature switchable glycopolymers and their conformation-dependent binding to receptor targets.
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温度可切换的糖聚合物及其与受体靶标的构象依赖性结合
DOI:
10.1021/acs.biomac.0c00676
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发表时间:
2020
影响因子:
6.2
通讯作者:
Schmidt
中科院分区:
文献类型:
--
作者:
Strzelczyk;Feldhof;Schmidt
The temperature-dependent binding of copolymers from poly(N-isopropylacrylamide) (PNIPAM) and mannose ligands toEscherichia coliand concanavalin A (ConA) is determined. Through polymer analogous reactions using poly(N-acryloxysuccinimide) and amine-linked mannose residues with different linkers, glycopolymers are prepared with the variation of the mannose density. Quantitative adhesion inhibition assays show the inhibitory potential of the glycopolymers as a function of the mannose/NIPAM ratio and linker type above and below their lower critical solution temperature (LCST). Intriguingly, opposite temperature effects on the binding toE. coliand ConA are observed. While theE. coliinhibition is stronger above the LCST, the ConA inhibition is, in overall, weaker at elevated temperatures. When going beyond the LCST, the polymers undergo a coil-to-globule transition, forming microphases with surface-enriched hydrophilic sugar moieties exhibiting increasedE. coliinhibition through steric shielding. However, the formation of such microphases above the LCST renders a fraction of carbohydrate ligands inaccessible,and the polymers remaining in the solution phase then have coil sizes below the minimum binding site spacing of the ConA receptor, explaining reduced ConA inhibition. Overall, these results suggest that the coil-to-globule transition of glycopolymers may induce lower or higher inhibitory potentials due to the adverse effects of steric shielding and carbohydrate ligand accessibility.
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影响因子:
46.2
作者:
Kiessling LL;Grim JC
通讯作者:
Grim JC
影响因子:
9.5
作者:
T. Paul;Sophie Rübel;Marco Hildebrandt;A. K. Strzelczyk;Carina Spormann;T. Lindhorst;Stephan Schmidt
通讯作者:
T. Paul;Sophie Rübel;Marco Hildebrandt;A. K. Strzelczyk;Carina Spormann;T. Lindhorst;Stephan Schmidt
影响因子:
3.2
作者:
Sperling, Oliver;Fuchs, Andreas;Lindhorst, Thisbe K.
通讯作者:
Lindhorst, Thisbe K.
影响因子:
--
作者:
Hudak JE;Bertozzi CR
通讯作者:
Bertozzi CR
影响因子:
7.8
作者:
V. Wittmann
通讯作者:
V. Wittmann