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Yin Z, Lv Z, Yang L, Li C, Teng F, Liang W. The nuclear receptor coactivator 4 regulates ferritinophagy induced by vibrio splendidus in coelomocytes of Apostichopus japonicus. FISH & SHELLFISH IMMUNOLOGY 2024; 151:109745. [PMID: 38960105 DOI: 10.1016/j.fsi.2024.109745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 06/26/2024] [Accepted: 07/01/2024] [Indexed: 07/05/2024]
Abstract
Iron homeostasis is vital for the host's defense against pathogenic invasion and the ferritinophagy is a crucial mechanism in maintaining intracellular iron homeostasis by facilitating the degradation and recycling of stored iron. The nuclear receptor coactivator 4 (NCOA4) serves as a ferritinophagy receptor, facilitating the binding and delivery of ferritin to the autophagosome and lysosome. However, NCOA4 of the sea cucumber Apostichopus japonicus (AjNCOA4) has not been reported until now. In this study, we identified and characterized AjNCOA4 in A. japonicus. This gene encodes a polypeptide containing 597 amino acids with an open reading frame of 1794 bp. The inferred amino acid sequence of AjNCOA4 comprises an ARA70 domain. Furthermore, a multiple sequence alignment demonstrated varying degrees of sequence homology between AjNCOA4 from A. japonicus and other NCOA4 orthologs. The phylogenetic tree of NCOA4 correlates with the established timeline of metazoan evolution. Expression analysis revealed that AjNCOA4 is expressed in all tested tissues, including the body wall, muscle, intestine, respiratory tree, and coelomocytes. Following challenge with Vibrio splendidus, the coelomocytes exhibited a significant increase in AjNCOA4 mRNA levels, peaking at 24 h. We successfully obtained recombinant AjNCOA4 protein through prokaryotic expression and prepared a specific polyclonal antibody. Immunofluorescence and co-immunoprecipitation experiments demonstrated an interaction between AjNCOA4 and AjFerritin in coelomocytes. RNA interference-mediated knockdown of AjNCOA4 expression resulted in elevated iron ion levels in coelomocytes. Bacterial stimulation enhanced ferritinophagy in coelomocytes, while knockdown of AjNCOA4 reduced the occurrence of ferritinophagy. These findings suggest that AjNCOA4 modulates ferritinophagy induced by V. splendidus in coelomocytes of A. japonicus.
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Affiliation(s)
- Zhiqun Yin
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, School of Marine Sciences, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Zhimeng Lv
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, School of Marine Sciences, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Lei Yang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, School of Marine Sciences, Ningbo University, Ningbo, Zhejiang, 315211, China.
| | - Chenghua Li
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, School of Marine Sciences, Ningbo University, Ningbo, Zhejiang, 315211, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong, 266071, China.
| | - Fei Teng
- College of Mathematics and Computer, Jilin Normal University, Siping, Jilin, China
| | - Weikang Liang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, School of Marine Sciences, Ningbo University, Ningbo, Zhejiang, 315211, China.
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Hu J, Sha X, Li Y, Wu J, Ma J, Zhang Y, Yang R. Multifaceted Applications of Ferritin Nanocages in Delivering Metal Ions, Bioactive Compounds, and Enzymes: A Comprehensive Review. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:19903-19919. [PMID: 37955969 DOI: 10.1021/acs.jafc.3c05510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2023]
Abstract
Ferritin, a distinctive iron-storage protein, possesses a unique cage-like nanoscale structure that enables it to encapsulate and deliver a wide range of biomolecules. Recent advances prove that ferritin can serve as an efficient 8 nm diameter carrier for various bioinorganic nutrients, such as minerals, bioactive polyphenols, and enzymes. This review offers a comprehensive summary of ferritin's structural features from different sources and emphasizes its functions in iron supplementation, calcium delivery, single- and coencapsulation of polyphenols, and enzyme package. Additionally, the influence of innovative food processing technologies, including manothermosonication, pulsed electric field, and atmospheric cold plasma, on the structure and function of ferritin are examined. Furthermore, the limitations and prospects of ferritin in food and nutritional applications are discussed. The exploration of ferritin as a multifunctional protein with the capacity to load various biomolecules is crucial to fully harnessing its potential in food applications.
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Affiliation(s)
- Jiangnan Hu
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Xinmei Sha
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Yue Li
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Jincan Wu
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Junrui Ma
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Yuyu Zhang
- Key Laboratory of Geriatric Nutrition and Health (Beijing Technology and Business University), Ministry of Education, Beijing 100048, China
| | - Rui Yang
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin 300457, China
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Chen H, Xie J, Hu M, Han X, Fu Y, Dai H, Ma L, Zhang Y. In vivo biosynthesis of nutritional holoferritin nanoparticles: Preparation, characterization, iron content analysis, and synthetic pathway. Food Chem 2023; 414:135692. [PMID: 36808026 DOI: 10.1016/j.foodchem.2023.135692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 01/24/2023] [Accepted: 02/12/2023] [Indexed: 02/16/2023]
Abstract
Natural holoferritin, containing average 2000 Fe3+/ferritin, has been considered as promising iron supplementary in food and medical science. However, the low extraction yields highly limited its practical application. Herein, we provided a facile strategy for holoferritin preparation through in vivo microorganism-directed biosynthesis, and the structure, iron content, and the composition of iron core have been investigated. The results revealed that in vivo biosynthesized holoferritin possesses great monodispersity and water-solubility. In addition, the in vivo biosynthesized holoferritin contains a comparative iron content as compared to natural holoferritin, giving the ratio of ∼ 2500 iron/ferritin. Besides, the composition of iron core has been identified as ferrihydrite and FeOOH, and three steps might be involved in iron core formation. This work highlighted that the microorganism-directed biosynthesis could be an efficient strategy for preparation of holoferritin, which might be beneficial for its practical application for iron supplementation.
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Affiliation(s)
- Hai Chen
- College of Food Science, Southwest University, Chongqing 400715, China; Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, Chongqing 400715, China; Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, China; State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China.
| | - Jiang Xie
- College of Food Science, Southwest University, Chongqing 400715, China
| | - Mengji Hu
- College of Food Science, Southwest University, Chongqing 400715, China
| | - Xueer Han
- College of Food Science, Southwest University, Chongqing 400715, China
| | - Yu Fu
- College of Food Science, Southwest University, Chongqing 400715, China; Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, Chongqing 400715, China; Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, China; State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China
| | - Hongjie Dai
- College of Food Science, Southwest University, Chongqing 400715, China; Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, Chongqing 400715, China; Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, China; State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China
| | - Liang Ma
- College of Food Science, Southwest University, Chongqing 400715, China; Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, Chongqing 400715, China; Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, China; State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China
| | - Yuhao Zhang
- College of Food Science, Southwest University, Chongqing 400715, China; Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, Chongqing 400715, China; Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, China; State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China.
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Chen H, Tan X, Hu M, Xie J, Han X, Yu Y, Zhu H, Wang H, Zhang Y. Genipin-mediated subunit-subunit crosslinking of ferritin nanocages: Structure, properties, and its application for food bioactive compound sealing. Food Chem 2023; 411:135437. [PMID: 36701920 DOI: 10.1016/j.foodchem.2023.135437] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 12/12/2022] [Accepted: 01/05/2023] [Indexed: 01/09/2023]
Abstract
Ferritin proteins are promising nano-carriers for bioactive compound delivery. However, the disassembly properties under acidic/alkaline conditions pose risks of cargo leakage. Herein, genipin-mediated chemical crosslinking method was provided as an alternative and effective strategy to construct robust ferritin nanocarrier through controlled-intramolecular conjugation. As indicated by SDS-/Native- PAGE, the crosslinking degree gradually increased with incubating time prolonging. CD results showed that the cross-linking would decrease α-helix content from 78.4 % to 52.7 % upon 6 h incubation. However, TEM images showed that the genipin-modification has subtle influence on its shell-like structure. Remarkably, the cross-linking can be well controlled by intramolecular subunit-subunit conjugation rather than intermolecular conjugation, giving an excellent monodispersity. Importantly, the covalent cross-linking can tight neighboring subunits and inhibit its disassociation, finally inhibiting the leakage of encapsulated-cargos from ferritin cavity under acidic environments. Such findings suggested that the genipin-mediated cross-linking strategy can fabricate robust nano-carriers for bioactive compound delivery.
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Affiliation(s)
- Hai Chen
- College of Food Science, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, China; State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China
| | - Xiaoyi Tan
- College of Food Science & Nutritional Engineering, China Agricultural University, 14 Beijing 100083, China
| | - Mengji Hu
- College of Food Science, Southwest University, Chongqing 400715, China
| | - Jiang Xie
- College of Food Science, Southwest University, Chongqing 400715, China
| | - Xueer Han
- College of Food Science, Southwest University, Chongqing 400715, China
| | - Yong Yu
- College of Food Science, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, China; State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China
| | - Hankun Zhu
- College of Food Science, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, China; State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China
| | - Hongxia Wang
- College of Food Science, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, China; State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China
| | - Yuhao Zhang
- College of Food Science, Southwest University, Chongqing 400715, China; Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, Chongqing 400715, China; Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, China; State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China.
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Structural and Functional Insights into the Roles of Potential Metal-Binding Sites in Apostichopus japonicus Ferritin. Polymers (Basel) 2022; 14:polym14245378. [PMID: 36559745 PMCID: PMC9785301 DOI: 10.3390/polym14245378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/21/2022] [Accepted: 12/06/2022] [Indexed: 12/13/2022] Open
Abstract
Ferritin is widely acknowledged as a conservative iron storage protein found in almost all living kingdoms. Apostichopus japonicus (Selenka) is among the oldest echinoderm fauna and has unique regenerative potential, but the catalytic mechanism of iron oxidation in A. japonicus ferritin (AjFER) remains elusive. We previously identified several potential metal-binding sites at the ferroxidase center, the three- and four-fold channels in AjFER. Herein, we prepared AjFER, AjFER-E25A/E60A/E105A, AjFER-D129A/E132A, and AjFER-E168A mutants, investigated their structures, and functionally characterized these ferritins with respect to Fe2+ uptake using X-ray techniques together with biochemical analytical methods. A crystallographic model of the AjFER-D129A/E132A mutant, which was solved to a resolution of 1.98 Å, suggested that the substitutions had a significant influence on the quaternary structure of the three-fold channel compared to that of AjFER. The structures of these ferritins in solution were determined based on the molecular envelopes of AjFER and its variants by small-angle X-ray scattering, and the structures were almost consistent with the characteristics of well-folded and globular-shaped proteins. Comparative biochemical analyses indicated that site-directed mutagenesis of metal-binding sites in AjFER presented relatively low rates of iron oxidation and thermostability, as well as weak iron-binding affinity, suggesting that these potential metal-binding sites play critical roles in the catalytic activity of ferritin. These findings provide profound insight into the structure-function relationships related to marine invertebrate ferritins.
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Ferritin nanocage based delivery vehicles: From single-, co- to compartmentalized- encapsulation of bioactive or nutraceutical compounds. Biotechnol Adv 2022; 61:108037. [PMID: 36152892 DOI: 10.1016/j.biotechadv.2022.108037] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 09/15/2022] [Accepted: 09/16/2022] [Indexed: 11/30/2022]
Abstract
Bioactive or nutraceutical ingredients have been widely used in pursuit of health and well-being. However, the environmental instability, poor solubility and bioavailability, and unspecific delivery highly limited their practical values. By virtue of the unique shell-like structure, definite disassembly/reassembly behavior, and excellent safety profile of ferritin protein, it stands out among of various nano-materials and is emerging as one of the most promising vehicles for the encapsulation and delivery of bioactive ingredients or drugs. In this review, we present a systematic overview of recent advances of ferritin-based delivery systems from single-encapsulation, co-encapsulation, to compartmentalized-encapsulation of bioactive ingredients or drugs. Different encapsulation strategies for cargo loading as well as their advantages and drawbacks have been critically reviewed. This study emphasized the importance of the construction of compartmentalized delivery systems through the usage of ferritin nanocages, which exhibit great potential for facilitating the synergistic functionality of different types of cargos. Lastly, the applications of ferritin nanocages for physicochemical improvements and functionality achievements of loaded cargos are summarized. In conclusion, ferritin protein nanocages not only are excellent nanocarriers, but also can act as"multi-seated" vehicles for co-encapsulation and compartmentalized encapsulation of different cargos simultaneously.
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Hagen WR. Maximum iron loading of ferritin: half a century of sustained citation distortion. Metallomics 2022; 14:mfac063. [PMID: 36002017 DOI: 10.1093/mtomcs/mfac063] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 08/19/2022] [Indexed: 06/15/2023]
Abstract
Analysis of citation networks in biomedical research has indicated that belief in a specific scientific claim can gain unfounded authority through citation bias (systematic ignoring of papers that contain content conflicting with a claim), amplification (citation to papers that don't contain primary data), and invention (citing content but claiming it has a different meaning). There is no a priori reason to expect that citation distortion is limited to particular fields of science. This Pespective presents a case study of the literature on maximum iron loading of the ferritin protein to illustrate that the field of metallomics is no exception to the rule that citation distortion is a widespread phenomenon.
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Affiliation(s)
- Wilfred R Hagen
- Delft University of Technology, Department of Biotechnology, Building 58, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
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