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[Interaction between gomizine D and α-glucosidase].
Hui Zhang1, Yuan-Yuan Wu1, Chen-Ye Huang1
1College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China.
Gomizine D effectively inhibits alpha-glucosidase, showing greater potency than acarbose. This natural compound offers a promising avenue for developing new alpha-glucosidase inhibitors.
Area of Science:
- Biochemistry
- Enzyme Inhibition
- Pharmacology
Background:
- Alpha-glucosidase plays a crucial role in carbohydrate digestion.
- Inhibiting alpha-glucosidase is a therapeutic strategy for managing diabetes.
- Gomizine D is a compound with potential biological activities.
Purpose of the Study:
- To investigate the inhibitory effect of gomizine D on alpha-glucosidase.
- To determine the kinetic parameters and binding mode of gomizine D interaction with alpha-glucosidase.
Main Methods:
- Enzyme inhibition assays using p-nitrophenyl-α-D-glucopyranoside (PNPG) substrate.
- Determination of IC50 and Ki values.
- Molecular docking simulations using AutoDock Vina.
- UV spectroscopy to analyze changes in enzyme structure.
Main Results:
- Gomizine D exhibited a lower IC50 value (0.59 mmol•L⁻¹) compared to acarbose (1.95 mmol•L⁻¹).
- Gomizine D acts as a reversible, non-competitive inhibitor with a Ki of 4.026 g•L⁻¹.
- Molecular docking revealed a lower binding energy for gomizine D (-7.7 kcal•mol⁻¹) than acarbose (-6.6 kcal•mol⁻¹).
- UV spectroscopy indicated alterations in the microenvironment and reduced polarity of alpha-glucosidase upon binding with gomizine D.
Conclusions:
- Gomizine D is a potent inhibitor of alpha-glucosidase.
- The findings suggest gomizine D has a favorable binding interaction with alpha-glucosidase.
- Gomizine D represents a potential therapeutic candidate for alpha-glucosidase-related conditions.
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