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Published on: December 13, 2016
Structurally Programmable Dual-Compartment Ferritin Nanocarrier for Coordinated Iron and Zinc Supplementation
Geng Cao1,2, Yishen Cheng3, Hemeng Ma1,2
1Key Laboratory of Food Nutrition and Health of Liaoning Province, School of Food Science and Technology, Dalian Polytechnic University, Dalian116034, China.
Journal of Agricultural and Food Chemistry
|August 10, 2026
Summary
Engineered nanocarriers efficiently deliver both iron and zinc, addressing common deficiencies in children. This dual-compartment design improves mineral bioavailability for better nutritional outcomes.
Area of Science:
- Biomaterials Engineering
- Nutritional Science
- Structural Biology
Background:
- Iron and zinc deficiencies frequently co-occur in young children, leading to significant health issues.
- Single-nutrient supplementation often suffers from poor bioavailability, limiting its effectiveness.
- Developing strategies for co-delivery of essential minerals is crucial for improving nutritional status.
Purpose of the Study:
- To engineer a novel dual-compartment nanocarrier for segregated loading and enhanced bioavailability of iron (Fe) and zinc (Zn).
- To utilize AlphaFold3 (AF3) structural predictions to guide the design of the nanocarrier.
- To create a nanodesign strategy for coordinated multimineral supplementation.
Main Methods:
- Employing structural prediction (AlphaFold3) to engineer a ferritin variant (GKFN3C) with a dual-compartment metal-binding architecture.
- Introducing a linear cysteine-based motif at the intrasubunit interface to segregate Fe and Zn.
- Quantifying metal loading capacity for Zn2+ and Fe2+ in the engineered nanocarrier.
Main Results:
- Successfully established a dual-compartment architecture in the GKFN3C variant, enabling segregated Zn2+ and Fe2+ loading.
- Achieved significantly enhanced metal loading in GKFN3C compared to the control (GKFN).
- Zn loading increased from 193 ± 9 to 239 ± 13 ions per cage, and Fe loading increased from 334 ± 6 to 474 ± 23 ions per cage.
Conclusions:
- The engineered GKFN3C nanocarrier demonstrates a successful strategy for coordinated iron and zinc delivery.
- This structurally programmable nanodesign enhances mineral loading efficiency and bioavailability.
- The approach offers a promising solution for addressing co-occurring mineral deficiencies in vulnerable populations.
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