Amphiphilic α-Peptoid-deoxynojirimycin Conjugate-based Multivalent Glycosidase Inhibitor for Hypoglycemic Effect and
Guang-Yuan Wang1,2, Dong-Xiao Yan3, Rui-Xue Rong3
1College of Chemistry and Materials Science, State Key Laboratory of New Pharmaceutical Preparations and Excipients, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis (Ministry of Education), Key Laboratory of Chemical Biology of Hebei Province, Hebei Research Center of the Basic Discipline of Synthetic Chemistry, Hebei University, Baoding 071002, P. R. China.
Self-assembling drug conjugates, LP-4DNJ-6C, effectively inhibit alpha-glucosidases in the small intestine. This study demonstrates a viable strategy for developing self-assembled multivalent hypoglycemic drugs.
Area of Science:
- Biochemistry
- Pharmacology
- Materials Science
Background:
- Multivalent glycosidase inhibitors derived from 1-deoxynojirimycin are effective against alpha-glucosidases.
- The in vivo mechanism of self-assembled multivalent inhibitors requires further investigation, particularly their stability and binding efficacy in the small intestine.
Purpose of the Study:
- To design and synthesize amphiphilic 1-deoxynojirimycin and alpha-peptoid conjugates (LP-4DNJ-3C and LP-4DNJ-6C).
- To investigate the self-assembling behaviors, multivalent alpha-glucosidase inhibition, and in vivo fluorescence imaging capabilities of these conjugates.
- To evaluate the potential of self-assembly for developing effective hypoglycemic drugs.
Main Methods:
- Synthesis of amphiphilic conjugates LP-4DNJ-3C and LP-4DNJ-6C.
- In vitro assessment of multivalent alpha-glucosidase inhibition.
- Complexation with Nile red for fluorescence imaging.
- In vivo fluorescence imaging in living organs, specifically the small intestine.
Main Results:
- LP-4DNJ-6C demonstrated superior in vitro multivalent alpha-glucosidase inhibition.
- Self-assembled LP-4DNJ-6C formed a complex with Nile red, exhibiting fluorescence quenching upon binding to alpha-glucosidases.
- Effective fluorescence imaging of alpha-glucosidases in the small intestine was achieved.
Conclusions:
- Self-assembly of multivalent inhibitors like LP-4DNJ-6C is a stable and effective strategy for targeting intestinal alpha-glucosidases.
- This approach offers a viable pathway for the rational design of novel, self-assembled multivalent hypoglycemic drugs.
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