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- W2316242586 abstract "The distribution of endomorphins (EM) 1 and 2 in the human brain inversely correlates with cerebral neurodegeneration in Alzheimer’s disease (AD), implying a protective role. These endogenous opioid peptides incorporate aromatic residues and a β-breaker motif, as seen in several optimized inhibitors of Aβ aggregation. The activity of native endomorphins was studied, as well as the rationally designed analogue Aib-1, which includes a remarkably efficient β-breaker, α-aminoisobutyric acid (Aib). In vitro and GFP fusion protein assays showed that Aib-1 interacted with Aβ and markedly inhibited the formation of toxic oligomer and fibril growth. Moreover, Aib-1 prevented the toxicity of Aβ toward neuronal PC12 cells and markedly rectified reduced longevity of an AD fly model. Atomistic simulations and NMR-derived solution structures revealed that Aib-1 significantly reduced the propensity of Aβ to aggregate due to multimode interactions including aromatic, hydrophobic, and polar contacts. We suggest that hindering the self-assembly process by interfering with the aromatic core of amyloidogenic peptides may pave the way toward developing therapeutic agents to treat amyloid-associated diseases." @default.
- W2316242586 created "2016-06-24" @default.
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- W2316242586 date "2011-09-19" @default.
- W2316242586 modified "2023-09-27" @default.
- W2316242586 title "Structural Basis for Inhibiting β-Amyloid Oligomerization by a Non-coded β-Breaker-Substituted Endomorphin Analogue" @default.
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- W2316242586 doi "https://doi.org/10.1021/cb200103h" @default.
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