Synthesis of a “clickable” Angiopep-conjugated p-coumaric acid for brain-targeted delivery
Source abstract
Abstract
Overexpression of free radicals in the brain is emerging as important markers in the etiology of neurodegenerative diseases including Parkinson’s disease, Alzheimer’s disease, and stroke. Numerous antioxidants with protective effect on neuronal injuries under oxidative stress are often limited to penetrate the blood–brain barrier (BBB). Angiopep-2 is the ligand of low-density lipoprotein receptor-related protein expressed on the BBB possessing high transcytosis capacity and parenchymal accumulation. In this study, novel Angiopep-conjugated p-coumaric acid (3) was synthesized, using the Click chemistry, as a potential antioxidant for the protection of the brain under oxidative stress. The clickable Angiopep (3) was synthesized by Cu(I)-catalyzed 1,3-dipolar cycloaddition reaction of the terminal acetylene-modified Angiopep and azide of p-coumaric acid. The Angiopep-conjugated compound (3) showed antioxidant potency and non-cytotoxic effect toward brain endothelial cells (BECs). Obviously, the penetration and BECs protection of 3 were higher than that of the unconjugated p-coumaric acid. The results establish the bio-conjugation of antioxidant and Angiopep with enhanced protective effect on the BECs under oxidative stress. The findings provide great potential for the development of neurotherapeutics with increased brain penetration.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Click Chemistry and Applications · Nanoplatforms for cancer theranostics · Advanced Nanomaterials in Catalysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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