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Li S, Li Y, Dou M, Zhang M, Zhao Z, Wu H, Zhu S, Obadina AO. Glycogen and zinc-enriched ferritin as bioavailable nanoparticulate nutrients released from gastrointestinal digestion of pacific oyster (Crassostrea gigas). Food Chem 2024; 457:140125. [PMID: 38905826 DOI: 10.1016/j.foodchem.2024.140125] [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: 02/05/2024] [Revised: 05/14/2024] [Accepted: 06/13/2024] [Indexed: 06/23/2024]
Abstract
Oyster is a low-carbon animal food enriched with protein, glycogen, and trace minerals. Nano-nutrients are increasingly perceived as an unignorable part of foods. Here, simulated gastrointestinal digestion released a considerable amount of nanoparticulate nutrients from raw and cooked oysters. They were identified as glycogen monomers with size of 20-40 nm and their aggregates, as well as 6 nm-sized bare cores of ferritin containing iron and zinc (4:1, w/w). FITC-labeling and flow cytometry unveiled the efficient uptake of oyster glycogen by polarized Caco-2 cells via macropinocytosis and receptor-mediated endocytosis. Calcein-fluorescence-quenching assay revealed divalent-metal-transporter-1- and macropinocytosis-mediated enterocyte iron absorption from oyster ferritin. Zinquin-fluorescence flow cytometry and ex-vivo mouse ileal loop experiments demonstrated the ready intestinal zinc absorption from oyster ferritin via macropinocytosis, as well as the good resistance of oyster ferritin to phytate's inhibition on zinc absorption. Overall, our results offer a new insight into the digestive and chemical properties of oysters.
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Affiliation(s)
- Shiyang Li
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, 5 Yushan Road, Qingdao, Shandong Province, 266003, China
| | - Yangguang Li
- Institute of Nutrition and Health, School of Public Health, Qingdao University, 308 Ningxia Road, Qingdao, Shandong Province, 266021, China
| | - Mengting Dou
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, 5 Yushan Road, Qingdao, Shandong Province, 266003, China
| | - Meichao Zhang
- Weihai Institute for Food and Drug Control, Weihai 264299, China
| | - Zifang Zhao
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, 5 Yushan Road, Qingdao, Shandong Province, 266003, China; Hainan/Haikou Research & Development Center for Biopeptide Engineering, Huayan Collagen Technology Co., Ltd., Haikou 571000, China
| | - Haohao Wu
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, 5 Yushan Road, Qingdao, Shandong Province, 266003, China.
| | - Suqin Zhu
- Institute of Nutrition and Health, School of Public Health, Qingdao University, 308 Ningxia Road, Qingdao, Shandong Province, 266021, China.
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2
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Abuzaid H, Abdelrazig S, Ferreira L, Collins HM, Kim DH, Lim KH, Kam TS, Turyanska L, Bradshaw TD. Apoferritin-Encapsulated Jerantinine A for Transferrin Receptor Targeting and Enhanced Selectivity in Breast Cancer Therapy. ACS OMEGA 2022; 7:21473-21482. [PMID: 35785302 PMCID: PMC9244903 DOI: 10.1021/acsomega.2c00997] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 05/19/2022] [Indexed: 05/03/2023]
Abstract
The O-acetyl (or acetate) derivative of the Aspidosperma alkaloid Jerantinine A (JAa) elicits anti-tumor activity against cancer cell lines including mammary carcinoma cell lines irrespective of receptor status (0.14 < GI50 < 0.38 μM), targeting microtubule dynamics. By exploiting breast cancer cells' upregulated transferrin receptor 1 (TfR1) expression and apoferritin (AFt) recognition, we sought to develop an AFt JAa-delivery vehicle to enhance tumor-targeting and reduce systemic toxicity. Optimizing pH-mediated reassembly, ∼120 JAa molecules were entrapped within AFt. Western blot and flow cytometry demonstrate TfR1 expression in cancer cells. Enhanced internalization of 5-carboxyfluorescein-conjugated human AFt in SKBR3 and MDA-MB-231 cancer cells is observed compared to MRC5 fibroblasts. Accordingly, AFt-JAa delivers significantly greater intracellular JAa levels to SKBR3 and MDA-MB-231 cells than naked JAa (0.2 μM) treatment alone. Compared to naked JAa (0.2 μM), AFt-JAa achieves enhanced growth inhibition (2.5-14-fold; <0.02 μM < GI50 < 0.15 μM) in breast cancer cells; AFt-JAa treatment results in significantly reduced clonal survival, more profound cell cycle perturbation including G2/M arrest, greater reduction in cell numbers, and increased apoptosis compared to the naked agent (p < 0.01). Decreased PLK1 and Mcl-1 expression, together with the appearance of cleaved poly (ADP-ribose)-polymerase, corroborate the augmented potency of AFt-JAa. Hence, we demonstrate that AFt represents a biocompatible vehicle for targeted delivery of JAa, offering potential to minimize toxicity and enhance JAa activity in TfR1-expressing tumors.
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Affiliation(s)
- Haneen Abuzaid
- School
of Pharmacy, Biodiscovery Institute, The
University of Nottingham, University Park, Nottingham NG7 2RD, U.K.
| | - Salah Abdelrazig
- School
of Pharmacy, Biodiscovery Institute, The
University of Nottingham, University Park, Nottingham NG7 2RD, U.K.
| | - Lenny Ferreira
- School
of Pharmacy, Biodiscovery Institute, The
University of Nottingham, University Park, Nottingham NG7 2RD, U.K.
| | - Hilary M. Collins
- School
of Pharmacy, Biodiscovery Institute, The
University of Nottingham, University Park, Nottingham NG7 2RD, U.K.
| | - Dong-Hyun Kim
- School
of Pharmacy, Biodiscovery Institute, The
University of Nottingham, University Park, Nottingham NG7 2RD, U.K.
| | - Kuan-Hon Lim
- The
University of Nottingham Malaysia, Block B, Malaysia Campus, Jalan Broga, 43500 Semenyih, Selangor, Malaysia
| | - Toh-Seok Kam
- Department
of Chemistry, Faculty of Science, The University
of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Lyudmila Turyanska
- Faculty
of Engineering, The University of Nottingham, Additive Manufacturing Building,
Jubilee Campus, University Park, Nottingham NG7 2RD, U.K.
| | - Tracey D. Bradshaw
- School
of Pharmacy, Biodiscovery Institute, The
University of Nottingham, University Park, Nottingham NG7 2RD, U.K.
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3
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Ereful NC, Jones H, Fradgley N, Boyd L, Cherie HA, Milner MJ. Nutritional and genetic variation in a core set of Ethiopian Tef (Eragrostis tef) varieties. BMC PLANT BIOLOGY 2022; 22:220. [PMID: 35484480 PMCID: PMC9047342 DOI: 10.1186/s12870-022-03595-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 04/14/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Tef (Eragrostis tef) is a tropical cereal domesticated and grown in the Ethiopian highlands, where it has been a staple food of Ethiopians for many centuries. Food insecurity and nutrient deficiencies are major problems in the country, so breeding for enhanced nutritional traits, such as Zn content, could help to alleviate problems with malnutrition. RESULTS To understand the breeding potential of nutritional traits in tef a core set of 24 varieties were sequenced and their mineral content, levels of phytate and protein, as well as a number of nutritionally valuable phenolic compounds measured in grain. Significant variation in all these traits was found between varieties. Genome wide sequencing of the 24 tef varieties revealed 3,193,582 unique SNPs and 897,272 unique INDELs relative to the tef reference var. Dabbi. Sequence analysis of two key transporter families involved in the uptake and transport of Zn by the plant led to the identification of 32 Zinc Iron Permease (ZIP) transporters and 14 Heavy Metal Associated (HMA) transporters in tef. Further analysis identified numerous variants, of which 14.6% of EtZIP and 12.4% of EtHMA variants were non-synonymous changes. Analysis of a key enzyme in flavanol synthesis, flavonoid 3'-hydroxylase (F3'H), identified a T-G variant in the tef homologue Et_s3159-0.29-1.mrna1 that was associated with the differences observed in kaempferol glycoside and quercetin glycoside levels. CONCLUSION Wide genetic and phenotypic variation was found in 24 Ethiopian tef varieties which would allow for breeding gains in many nutritional traits of importance to human health.
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Affiliation(s)
- Nelzo C Ereful
- NIAB, 93 Lawrence Weaver Road, Cambridge, CB3 0LE, UK
- Philippine Genome Centre, University of the Philippines Los Baňos, Laguna, Philippines
| | - Huw Jones
- NIAB, 93 Lawrence Weaver Road, Cambridge, CB3 0LE, UK
| | - Nick Fradgley
- NIAB, 93 Lawrence Weaver Road, Cambridge, CB3 0LE, UK
- Department of Plant Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EA, UK
| | - Lesley Boyd
- NIAB, 93 Lawrence Weaver Road, Cambridge, CB3 0LE, UK
| | - Hirut Assaye Cherie
- Faculty of Chemical and Food Engineering, Bahir Dar Institute of Technology, P.O.Box 26, Bahir Dar, Ethiopia
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4
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Sun N, Sun B, Li C, Zhang J, Yang W. Effects of Different Pretreatment Methods and Dietary Factors on the Form and Bioavailability of Iodine in Laminaria japonica. JOURNAL OF AQUATIC FOOD PRODUCT TECHNOLOGY 2022. [DOI: 10.1080/10498850.2021.2024313] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Nan Sun
- College of Food and Pharmaceutical Sciences, Key Laboratory of Animal Protein Food Deep Processing Technology of Zhejiang Province, Ningbo University, Ningbo, China
| | - Bolun Sun
- College of Food and Pharmaceutical Sciences, Key Laboratory of Animal Protein Food Deep Processing Technology of Zhejiang Province, Ningbo University, Ningbo, China
| | - Chao Li
- College of Food and Pharmaceutical Sciences, Key Laboratory of Animal Protein Food Deep Processing Technology of Zhejiang Province, Ningbo University, Ningbo, China
| | - Jinjie Zhang
- College of Food and Pharmaceutical Sciences, Key Laboratory of Animal Protein Food Deep Processing Technology of Zhejiang Province, Ningbo University, Ningbo, China
| | - Wenge Yang
- College of Food and Pharmaceutical Sciences, Key Laboratory of Animal Protein Food Deep Processing Technology of Zhejiang Province, Ningbo University, Ningbo, China
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Wright TIC, Gardner KA, Glahn RP, Milner MJ. Genetic control of iron bioavailability is independent from iron concentration in a diverse winter wheat mapping population. BMC PLANT BIOLOGY 2021; 21:212. [PMID: 33975563 PMCID: PMC8112066 DOI: 10.1186/s12870-021-02996-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 04/21/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Anemia is thought to affect up to 1.6 billion people worldwide. One of the major contributors to low iron (Fe) absorption is a higher proportion of cereals compared to meats and pulse crops in people's diets. This has now become a problem in both the developed and developing world, as a result of both modern food choice and food availability. Bread wheat accounts for 20 % of the calories consumed by humans and is an important source of protein, vitamins and minerals meaning it could be a major vehicle for bringing more bioavailable Fe into the diet. RESULTS To investigate whether breeding for higher concentrations of Fe in wheat grains could help increase Fe absorption, a multiparent advanced generation intercross (MAGIC) population, encompassing more than 80 % of UK wheat polymorphism, was grown over two seasons in the UK. The population was phenotyped for both Fe concentration and Fe bioavailability using an established Caco-2 cell bioassay. It was found that increasing Fe concentrations in the grains was not correlated with higher Fe bioavailability and that the underlying genetic regions controlling grain Fe concentrations do not co-localise with increased Fe absorption. Furthermore, we show that phytate concentrations do not correlate with Fe bioavailability in our wheat population and thus phytate-binding is insufficient to explain the lack of correlation between Fe bioavailability and Fe concentrations in the wheat grain. Finally, we observed no (Fe bioavailability) or low (Fe concentration) correlation between years for these traits, confirming that both are under strong environmental influence. CONCLUSIONS This suggests that breeders will have to select not only for Fe concentrations directly in grains, but also increased bioavailability. However the use of numerous controls and replicated trials limits the practicality of adoption of screening by Caco-2 cells by many breeders.
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Affiliation(s)
| | | | - Raymond P Glahn
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, 14853, Ithaca, NY, USA
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6
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Zhang YY, Stockmann R, Ng K, Ajlouni S. Opportunities for plant-derived enhancers for iron, zinc, and calcium bioavailability: A review. Compr Rev Food Sci Food Saf 2020; 20:652-685. [PMID: 33443794 DOI: 10.1111/1541-4337.12669] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 09/08/2020] [Accepted: 10/20/2020] [Indexed: 12/31/2022]
Abstract
Understanding of the mechanism of interactions between dietary elements, their salts, and complexing/binding ligands is vital to manage both deficiency and toxicity associated with essential element bioavailability. Numerous mineral ligands are found in both animal and plant foods and are known to exert bioactivity via element chelation resulting in modulation of antioxidant capacity or micobiome metabolism among other physiological outcomes. However, little is explored in the context of dietary mineral ligands and element bioavailability enhancement, particularly with respect to ligands from plant-derived food sources. This review highlights a novel perspective to consider various plant macro/micronutrients as prospective bioavailability enhancing ligands of three essential elements (Fe, Zn, and Ca). We also delineate the molecular mechanisms of the ligand-binding interactions underlying mineral bioaccessibility at the luminal level. We conclude that despite current understandings of some of the structure-activity relationships associated with strong mineral-ligand binding, the physiological links between ligands as element carriers and uptake at targeted sites throughout the gastrointestinal (GI) tract still require more research. The binding behavior of potential ligands in the human diet should be further elucidated and validated using pharmacokinetic approaches and GI models.
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Affiliation(s)
- Yianna Y Zhang
- School of Agriculture and Food, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC, Australia.,CSIRO Agriculture & Food, Werribee, VIC, Australia
| | | | - Ken Ng
- School of Agriculture and Food, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC, Australia
| | - Said Ajlouni
- School of Agriculture and Food, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC, Australia
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7
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Zhang YY, Stockmann R, Ng K, Ajlouni S. Revisiting phytate-element interactions: implications for iron, zinc and calcium bioavailability, with emphasis on legumes. Crit Rev Food Sci Nutr 2020; 62:1696-1712. [PMID: 33190514 DOI: 10.1080/10408398.2020.1846014] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Myo-Inositol hexakisphosphate or phytic acid concentration is a prominent factor known to impede divalent element bioavailability in vegetal foods including legumes. Both in vivo and in vitro studies have suggested that phytic acid and other plant-based constituents may synergistically form insoluble complexes affecting bioavailability of essential elements. This review provides an overview of existing investigations on the role of phytic acid in the binding, solubility and bioavailability of iron, zinc and calcium with a focus on legumes. Given the presence of various interference factors within legume matrices, current findings suggest that the commonly adapted approach of using phytic acid-element molar ratios as a bioavailability predictor may only be valid in limited circumstances. In particular, differences between protein properties and molar concentrations of other interacting ions are likely responsible for the observed poor correlations. The role of phytate degradation in element bioavailability has been previously examined, and in this review we re-emphasize its importance as a tool to enhance mineral bioavailability of mineral fortified legume crops. Food processing strategies to achieve phytate reduction were identified as promising tools to increase mineral bioavailability and included germination and fermentation, particularly when other bioavailability promoters (e.g. NaCl) are simultaneously added.
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Affiliation(s)
- Yianna Y Zhang
- School of Agriculture and Food, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, Victoria, Australia.,CSIRO Agriculture & Food, Werribee, Victoria, Australia
| | | | - Ken Ng
- School of Agriculture and Food, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, Victoria, Australia
| | - Said Ajlouni
- School of Agriculture and Food, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, Victoria, Australia
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8
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Broad RC, Bonneau JP, Beasley JT, Roden S, Sadowski P, Jewell N, Brien C, Berger B, Tako E, Glahn RP, Hellens RP, Johnson AAT. Effect of Rice GDP-L-Galactose Phosphorylase Constitutive Overexpression on Ascorbate Concentration, Stress Tolerance, and Iron Bioavailability in Rice. FRONTIERS IN PLANT SCIENCE 2020; 11:595439. [PMID: 33343598 PMCID: PMC7744345 DOI: 10.3389/fpls.2020.595439] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Accepted: 11/16/2020] [Indexed: 05/12/2023]
Abstract
Ascorbate (vitamin C) is an essential multifunctional molecule for both plants and mammals. In plants, ascorbate is the most abundant water-soluble antioxidant that supports stress tolerance. In humans, ascorbate is an essential micronutrient and promotes iron (Fe) absorption in the gut. Engineering crops with increased ascorbate levels have the potential to improve both crop stress tolerance and human health. Here, rice (Oryza sativa L.) plants were engineered to constitutively overexpress the rice GDP-L-galactose phosphorylase coding sequence (35S-OsGGP), which encodes the rate-limiting enzymatic step of the L-galactose pathway. Ascorbate concentrations were negligible in both null segregant (NS) and 35S-OsGGP brown rice (BR, unpolished grain), but significantly increased in 35S-OsGGP germinated brown rice (GBR) relative to NS. Foliar ascorbate concentrations were significantly increased in 35S-OsGGP plants in the vegetative growth phase relative to NS, but significantly reduced at the reproductive growth phase and were associated with reduced OsGGP transcript levels. The 35S-OsGGP plants did not display altered salt tolerance at the vegetative growth phase despite having elevated ascorbate concentrations. Ascorbate concentrations were positively correlated with ferritin concentrations in Caco-2 cells - an accurate predictor of Fe bioavailability in human digestion - exposed to in vitro digests of NS and 35S-OsGGP BR and GBR samples.
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Affiliation(s)
- Ronan C. Broad
- School of Biosciences, The University of Melbourne, Melbourne, VIC, Australia
- *Correspondence: Ronan C. Broad,
| | - Julien P. Bonneau
- School of Biosciences, The University of Melbourne, Melbourne, VIC, Australia
| | - Jesse T. Beasley
- School of Biosciences, The University of Melbourne, Melbourne, VIC, Australia
| | - Sally Roden
- Centre for Agriculture and the Bioeconomy, Institute for Future Environments, Queensland University of Technology, Brisbane, QLD, Australia
| | - Pawel Sadowski
- Central Analytical Research Facility, Institute for Future Environments, Queensland University of Technology, Brisbane, QLD, Australia
| | - Nathaniel Jewell
- Australian Plant Phenomics Facility and School for Agriculture, Food and Wine, The University of Adelaide, Adelaide, SA, Australia
| | - Chris Brien
- Australian Plant Phenomics Facility and School for Agriculture, Food and Wine, The University of Adelaide, Adelaide, SA, Australia
| | - Bettina Berger
- Australian Plant Phenomics Facility and School for Agriculture, Food and Wine, The University of Adelaide, Adelaide, SA, Australia
| | - Elad Tako
- Department of Food Science, Cornell University, Ithaca, NY, United States
| | - Raymond P. Glahn
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Ithaca, NY, United States
| | - Roger P. Hellens
- Centre for Agriculture and the Bioeconomy, Institute for Future Environments, Queensland University of Technology, Brisbane, QLD, Australia
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9
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A sulfated polysaccharide from abalone influences iron uptake by the contrary impacts of its chelating and reducing activities. Int J Biol Macromol 2019; 138:49-56. [DOI: 10.1016/j.ijbiomac.2019.07.072] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Revised: 07/09/2019] [Accepted: 07/09/2019] [Indexed: 12/26/2022]
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10
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Delimont NM, Katz BB, Fiorentino NM, Kimmel KA, Haub MD, Rosenkranz SK, Tomich JM, Lindshield BL. Salivary Cystatin SN Binds to Phytic Acid In Vitro and Is a Predictor of Nonheme Iron Bioavailability with Phytic Acid Supplementation in a Proof of Concept Pilot Study. Curr Dev Nutr 2019; 3:nzz057. [PMID: 31218272 PMCID: PMC6571437 DOI: 10.1093/cdn/nzz057] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 04/18/2019] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Acute phytic acid intake has been found to decrease iron bioavailability; however, repeated phytic acid consumption leads to iron absorption adaptation. Salivary proline-rich proteins (PRPs) have been shown to inhibit iron chelation to tannins and may mediate similar iron absorption adaptation with phytic acid intake. OBJECTIVES The objectives of this study were to determine whether salivary proteins bind to phytic acid in vitro, and to explore a proof of concept in a pilot study that examined the impact of 4-wk, daily phytic acid supplementation on individuals' iron status, bioavailability, and salivary PRP concentrations. METHODS High-performance liquid chromatography (HPLC) and matrix-assisted laser desorption/ionization-time of flight were used to characterize in vitro salivary protein-phytic acid interactions. Nonanemic women (n = 7) consumed 350 mg phytic acid supplements 3 times daily for 4 wk, and meal challenges were employed to determine iron bioavailability, iron status, and salivary protein concentrations before and after supplementation periods. Enzyme-linked immunosorbent assay (ELISA) analysis of purified protein fractions and participant saliva identified proteins bound to phytic acid. RESULTS In vitro salivary protein-phytic acid interaction identified cystatin SN, a non-proline rich salivary protein, as the specific bound protein to phytic acid. Iron bioavailability (P = 0.32), hemoglobin (P = 0.72), and serum ferritin (P = 0.08) concentrations were not reduced from week 0 to week 4 after phytic acid supplementation. Basic PRPs and cystatin SN concentrations were positively correlated with iron bioavailability at week 4. CONCLUSIONS Overall, results suggest that phytic acid binds to the non-PRP cystatin SN and that salivary protein production may improve iron bioavailability with phytic acid consumption.
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Affiliation(s)
- Nicole M Delimont
- Department of Food, Nutrition, Dietetics and Health, Kansas State University, Manhattan, KS, USA
| | - Benjamin B Katz
- Biotechnology and Proteomics Core Lab, Kansas State University, Manhattan, KS, USA
| | - Nicole M Fiorentino
- Department of Food, Nutrition, Dietetics and Health, Kansas State University, Manhattan, KS, USA
| | - Katheryne A Kimmel
- Department of Food, Nutrition, Dietetics and Health, Kansas State University, Manhattan, KS, USA
| | - Mark D Haub
- Department of Food, Nutrition, Dietetics and Health, Kansas State University, Manhattan, KS, USA
| | - Sara K Rosenkranz
- Department of Food, Nutrition, Dietetics and Health, Kansas State University, Manhattan, KS, USA
| | - John M Tomich
- Biotechnology and Proteomics Core Lab, Kansas State University, Manhattan, KS, USA
| | - Brian L Lindshield
- Department of Food, Nutrition, Dietetics and Health, Kansas State University, Manhattan, KS, USA
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11
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Kumar A, Kumar V, Krishnan V, Hada A, Marathe A, C P, Jolly M, Sachdev A. Seed targeted RNAi-mediated silencing of GmMIPS1 limits phytate accumulation and improves mineral bioavailability in soybean. Sci Rep 2019; 9:7744. [PMID: 31123331 PMCID: PMC6533290 DOI: 10.1038/s41598-019-44255-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 03/26/2019] [Indexed: 11/30/2022] Open
Abstract
Phytic acid (PA), the major phosphorus reserve in soybean seeds (60-80%), is a potent ion chelator, causing deficiencies that leads to malnutrition. Several forward and reverse genetics approaches have ever since been explored to reduce its phytate levels to improve the micronutrient and phosphorous availability. Transgenic technology has met with success by suppressing the expression of the PA biosynthesis-related genes in several crops for manipulating their phytate content. In our study, we targeted the disruption of the expression of myo-inositol-3-phosphate synthase (MIPS1), the first and the rate limiting enzyme in PA biosynthesis in soybean seeds, by both antisense (AS) and RNAi approaches, using a seed specific promoter, vicilin. PCR and Southern analysis revealed stable integration of transgene in the advanced progenies. The transgenic seeds (T4) of AS (MS14-28-12-29-3-5) and RNAi (MI51-32-22-1-13-6) soybean lines showed 38.75% and 41.34% reduction in phytate levels respectively, compared to non-transgenic (NT) controls without compromised growth and seed development. The electron microscopic examination also revealed reduced globoid crystals in the Protein storage vacoules (PSVs) of mature T4 seeds compared to NT seed controls. A significant increase in the contents of Fe2+ (15.4%, 21.7%), Zn2+ (7.45%, 11.15%) and Ca2+ (10.4%, 15.35%) were observed in MS14-28-12-29-3-5 and MI51-32-22-1-13-6 transgenic lines, respectively, compared to NT implicating improved mineral bioavailability. This study signifies proof-of-concept demonstration of seed-specific PA reduction and paves the path towards low phytate soybean through pathway engineering using the new and precise editing tools.
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Affiliation(s)
- Awadhesh Kumar
- Division of Biochemistry, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India
- Division of Crop Physiology and Biochemistry, ICAR-National Rice Research Institute, Cuttack, Odisha, India
| | - Varun Kumar
- Division of Biochemistry, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Waknaghat, (H.P.), India
| | - Veda Krishnan
- Division of Biochemistry, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India
| | - Alkesh Hada
- Division of Biochemistry, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India
| | - Ashish Marathe
- Division of Biochemistry, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India
| | - Parameswaran C
- Division of Biochemistry, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India
- Division of Crop Physiology and Biochemistry, ICAR-National Rice Research Institute, Cuttack, Odisha, India
| | - Monica Jolly
- Division of Biochemistry, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India
| | - Archana Sachdev
- Division of Biochemistry, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India.
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12
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Jiang H, Zhang W, Chen F, Zou J, Chen W, Huang G. Purification of an iron-binding peptide from scad (Decapterus maruadsi) processing by-products and its effects on iron absorption by Caco-2 cells. J Food Biochem 2019; 43:e12876. [PMID: 31353718 DOI: 10.1111/jfbc.12876] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 04/07/2019] [Accepted: 04/10/2019] [Indexed: 11/29/2022]
Abstract
This work was aimed at producing peptides containing iron-binding capabilities from scad (Decapterus maruadsi) processing by-product with alcalase hydrolysis. The chelating peptides were purified by ultrafiltration, immobilized-metal affinity chromatography, gel filtration chromatography, and reversed-phase high-performance liquid chromatography. A novel iron-binding peptide was purified with 1,386.63 Da molecular weight and amino acid sequence of QKGTYDDYVEGL. The peptide binds to iron mainly through carboxyl and hydroxyl oxygen bonds. The iron-binding peptide can significantly promote the absorption of inorganic iron in Caco-2 cells. These results have contributed to development of the peptide from scad processing by-products hydrolyzate in iron supplementations. PRACTICAL APPLICATIONS: Iron deficiency is one of the most common and widespread nutritional disorders in the world. Iron-peptide chelates may be suitable for iron-fortification. Our study shows that a peptide purified from scad processing by-product has iron-chelating activity, and significantly increases iron absorption by Caco-2 cells. Hence, this peptide has potential application as a novel carrier for enhancing iron absorption.
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Affiliation(s)
- Han Jiang
- Key Laboratory of Marine Food Quality and Hazard Controlling Technology of Zhejiang Province, College of Life Sciences, China Jiliang University, Hangzhou, China
| | - Wenting Zhang
- Dong Cheng Elementary School affiliated to Hangzhou Normal University, Hangzhou, China
| | - Fangyuan Chen
- Key Laboratory of Marine Food Quality and Hazard Controlling Technology of Zhejiang Province, College of Life Sciences, China Jiliang University, Hangzhou, China
| | - Jiong Zou
- Key Laboratory of Marine Food Quality and Hazard Controlling Technology of Zhejiang Province, College of Life Sciences, China Jiliang University, Hangzhou, China
| | - Wenwei Chen
- Key Laboratory of Marine Food Quality and Hazard Controlling Technology of Zhejiang Province, College of Life Sciences, China Jiliang University, Hangzhou, China
| | - Guangrong Huang
- Key Laboratory of Marine Food Quality and Hazard Controlling Technology of Zhejiang Province, College of Life Sciences, China Jiliang University, Hangzhou, China
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13
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O'Flaherty EAA, Tsermoula P, O'Neill EE, O'Brien NM. Co‐products of beef processing enhance non‐haem iron absorption in an
in vitro
digestion/caco‐2 cell model. Int J Food Sci Technol 2018. [DOI: 10.1111/ijfs.14049] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
| | - Paraskevi Tsermoula
- School of Food and Nutritional Sciences University College Cork Western Road Cork T12 YN60 Ireland
| | - Eileen E. O'Neill
- School of Food and Nutritional Sciences University College Cork Western Road Cork T12 YN60 Ireland
| | - Nora M. O'Brien
- School of Food and Nutritional Sciences University College Cork Western Road Cork T12 YN60 Ireland
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14
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Perfecto A, Rodriguez-Ramiro I, Rodriguez-Celma J, Sharp P, Balk J, Fairweather-Tait S. Pea Ferritin Stability under Gastric pH Conditions Determines the Mechanism of Iron Uptake in Caco-2 Cells. J Nutr 2018; 148:1229-1235. [PMID: 29939292 PMCID: PMC6074850 DOI: 10.1093/jn/nxy096] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 02/26/2018] [Accepted: 04/10/2018] [Indexed: 02/06/2023] Open
Abstract
Background Iron deficiency is an enduring global health problem that requires new remedial approaches. Iron absorption from soybean-derived ferritin, an ∼550-kDa iron storage protein, is comparable to bioavailable ferrous sulfate (FeSO4). However, the absorption of ferritin is reported to involve an endocytic mechanism, independent of divalent metal ion transporter 1 (DMT-1), the transporter for nonheme iron. Objective Our overall aim was to examine the potential of purified ferritin from peas (Pisum sativum) as a food supplement by measuring its stability under gastric pH treatment and the mechanisms of iron uptake into Caco-2 cells. Methods Caco-2 cells were treated with native or gastric pH-treated pea ferritin in combination with dietary modulators of nonheme iron uptake, small interfering RNA targeting DMT-1, or chemical inhibitors of endocytosis. Cellular ferritin formation, a surrogate measure of iron uptake, and internalization of pea ferritin with the use of specific antibodies were measured. The production of reactive oxygen species (ROS) in response to equimolar concentrations of native pea ferritin and FeSO4 was also compared. Results Pea ferritin exposed to gastric pH treatment was degraded, and the released iron was transported into Caco-2 cells by DMT-1. Inhibitors of DMT-1 and nonheme iron absorption reduced iron uptake by 26-40%. Conversely, in the absence of gastric pH treatment, the iron uptake of native pea ferritin was unaffected by inhibitors of nonheme iron absorption, and the protein was observed to be internalized in Caco-2 cells. Chlorpromazine (clathrin-mediated endocytosis inhibitor) reduced the native pea ferritin content within cells by ∼30%, which confirmed that the native pea ferritin was transported into cells via a clathrin-mediated endocytic pathway. In addition, 60% less ROS production resulted from native pea ferritin in comparison to FeSO4. Conclusion With consideration that nonheme dietary inhibitors display no effect on iron uptake and the low oxidative potential relative to FeSO4, intact pea ferritin appears to be a promising iron supplement.
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Affiliation(s)
- Antonio Perfecto
- Norwich Medical School, University of East Anglia, Norwich, United Kingdom
| | | | - Jorge Rodriguez-Celma
- School of Biological Sciences, University of East Anglia, Norwich, United Kingdom
- Department of Biological Chemistry, John Innes Center, Norwich, United Kingdom
| | - Paul Sharp
- Diabetes and Nutritional Sciences Division, King's College London, London, United Kingdom
| | - Janneke Balk
- School of Biological Sciences, University of East Anglia, Norwich, United Kingdom
- Department of Biological Chemistry, John Innes Center, Norwich, United Kingdom
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15
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Penugonda K, Fiorentino NM, Alavi S, Lindshield BL. Bioavailable Iron and Vitamin A in Newly Formulated, Extruded Corn, Soybean, Sorghum, and Cowpea Fortified-Blended Foods in the In Vitro Digestion/Caco-2 Cell Model. Curr Dev Nutr 2018; 2:nzy021. [PMID: 30046768 PMCID: PMC6054154 DOI: 10.1093/cdn/nzy021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 02/08/2018] [Accepted: 03/19/2018] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Fortified-blended foods (FBFs), particularly corn-soybean blend (CSB), are food aid products distributed in developing countries. The US Agency for International Development food aid quality review recommended developing extruded FBFs with the use of alternative commodities such as sorghum. OBJECTIVE The objective of the study was to determine bioavailable iron and vitamin A content from newly developed extruded corn, soybean, sorghum, and cowpea FBFs compared with the nonextruded traditional food aid FBFs, corn-soy blend 13 (CSB13) and corn-soy blend plus (CSB+). METHODS Eleven extruded FBFs-sorghum-cowpea (n = 7), sorghum-soy (n = 3), and corn-soy (n = 1)-along with 2 nonextruded FBFs-CSB13 and CSB+, and Cerelac (Nestlé), a commercially available fortified infant food, were prepared. Bioavailable iron and vitamin A contents were assessed by using the in vitro digestion/Caco-2 cell model. Dry FBFs, aqueous fractions, and Caco-2 cell pellet vitamin A contents were analyzed by HPLC. Dry FBF and aqueous fraction iron contents were measured by atomic absorptiometry, and bioavailable iron was assessed by measuring Caco-2 ferritin contents via ELISA. RESULTS Iron and vitamin A concentrations in Cerelac and dry FBFs ranged from 8.0 to 31.8 mg/100 g and 0.3 to 1.67 mg/100 g, respectively. All of the extruded FBFs contained 4- to 7-fold significantly higher (P < 0.05) aqueous fraction iron concentrations compared with CSB13 and CSB+. However, there were no significant differences in Caco-2 cell ferritin and vitamin A concentrations between extruded FBFs, nonextruded FBFs, and or the basal salt solution negative control. CONCLUSION Results support the theory that the consumption of newly developed extruded sorghum-cowpea, sorghum-soy, and corn-soy FBFs would result in iron and vitamin A concentrations comparable to traditional nonextruded CSB13 and CSB+ FBFs.
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Affiliation(s)
- Kavitha Penugonda
- Department of Food, Nutrition, Dietetics and Health, Kansas State University, Manhattan, KS
| | - Nicole M Fiorentino
- Department of Food, Nutrition, Dietetics and Health, Kansas State University, Manhattan, KS
| | - Sajid Alavi
- Department of Grain Science and Industry, Kansas State University, Manhattan, KS
| | - Brian L Lindshield
- Department of Food, Nutrition, Dietetics and Health, Kansas State University, Manhattan, KS
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16
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The insight study of SnO pico size particles in an ethanol-water system followed by its biosensing application. Biosens Bioelectron 2018; 117:129-137. [PMID: 29894849 DOI: 10.1016/j.bios.2018.06.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 05/30/2018] [Accepted: 06/02/2018] [Indexed: 10/14/2022]
Abstract
Pico sized Stannous oxide particles (SnO PPs) were synthesized in an ethanol-water solvent system on the surface of nitrogen doped graphene oxide (GO). The highly conductive support was a combination of dual interactions between 4-aminomethylbenzylamine (AMBA) and GO. The oppositely positioned -NH2 linkers of the AMBA were covalently incorporated into the GO matrix through condensation reaction followed by the strong π - π stacking interactions between aromatic rings of AMBA and GO. The change in the local chemical environment of GO via dual interactions provided a suitable atmosphere for the growth and dispersion of SnO PPs on GO-AMBA surface. The possible mechanism for the formation of SnO in an ethanol-water solvent system was evaluated. Furthermore, a light was shed on the factors responsible for the pico size of SnO particles synthesis along with its phenomenal distribution on the GO-AMBA surface. The catalyst containing SnO PPs was deployed as a biosensor for the detection of ascorbic acid (AA) for the very first time. A very wide linear range of 5.0 × 10-5-7.0 × 10-3 M, limit of detection (LOD) of 1.19 × 10-5 M along with excellent practical feasibility, storage stability, repeatability and selectivity towards AA electrooxidation showed the excellent synergy between nitrogen-rich GO surface and SnO PPs. The sensitivity (885.54 µAmM-1cm-2) of the catalyst was the most attractive feature, as it was obtained in the presence of 5 and 2-fold higher concentration of UA and DA interfering species respectively.
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17
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Wang H, Betti M. Sulfated glycosaminoglycan-derived oligosaccharides produced from chicken connective tissue promote iron uptake in a human intestinal Caco-2 cell line. Food Chem 2017; 220:460-469. [DOI: 10.1016/j.foodchem.2016.10.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 09/19/2016] [Accepted: 10/05/2016] [Indexed: 10/20/2022]
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18
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de Figueiredo MA, Boldrin PF, Hart JJ, de Andrade MJB, Guilherme LRG, Glahn RP, Li L. Zinc and selenium accumulation and their effect on iron bioavailability in common bean seeds. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2017; 111:193-202. [PMID: 27940270 DOI: 10.1016/j.plaphy.2016.11.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Revised: 11/10/2016] [Accepted: 11/24/2016] [Indexed: 05/24/2023]
Abstract
Common beans (Phaseolus vulgaris) are the most important legume crops. They represent a major source of micronutrients and a target for essential trace mineral enhancement (i.e. biofortification). To investigate mineral accumulation during seed maturation and to examine whether it is possible to biofortify seeds with multi-micronutrients without affecting mineral bioavailability, three common bean cultivars were treated independently with zinc (Zn) and selenium (Se), the two critical micronutrients that can be effectively enhanced via fertilization. The seed mineral concentrations during seed maturation and the seed Fe bioavailability were analyzed. Common bean seeds were found to respond positively to Zn and Se treatments in accumulating these micronutrients. While the seed pods showed a decrease in Zn and Se along with Fe content during pod development, the seeds maintained relatively constant mineral concentrations during seed maturation. Selenium treatment had minimal effect on the seed accumulation of phytic acid and polyphenols, the compounds affecting Fe bioavailability. Zinc treatment reduced phytic acid level, but did not dramatically affect the concentrations of total polyphenols. Iron bioavailability was found not to be greatly affected in seeds biofortified with Se and Zn. In contrast, the inhibitory polyphenol compounds in the black bean profoundly reduced Fe bioavailability. These results provide valuable information for Se and Zn enhancement in common bean seeds and suggest the possibility to biofortify with these essential nutrients without greatly affecting mineral bioavailability to increase the food quality of common bean seeds.
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Affiliation(s)
- Marislaine A de Figueiredo
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, NY 14853, USA; Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA; Department of Agriculture, Federal University of Lavras, Zip Code 3037, Lavras, MG 37200-000, Brazil
| | - Paulo F Boldrin
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, NY 14853, USA; Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA; Department of Soil Science, Federal University of Lavras, Zip Code 3037, Lavras, MG 37200-000, Brazil
| | - Jonathan J Hart
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, NY 14853, USA
| | - Messias J B de Andrade
- Department of Agriculture, Federal University of Lavras, Zip Code 3037, Lavras, MG 37200-000, Brazil
| | - Luiz R G Guilherme
- Department of Soil Science, Federal University of Lavras, Zip Code 3037, Lavras, MG 37200-000, Brazil
| | - Raymond P Glahn
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, NY 14853, USA
| | - Li Li
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, NY 14853, USA; Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA.
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Abid N, Khatoon A, Maqbool A, Irfan M, Bashir A, Asif I, Shahid M, Saeed A, Brinch-Pedersen H, Malik KA. Transgenic expression of phytase in wheat endosperm increases bioavailability of iron and zinc in grains. Transgenic Res 2016; 26:109-122. [PMID: 27687031 DOI: 10.1007/s11248-016-9983-z] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 09/22/2016] [Indexed: 11/26/2022]
Abstract
Phytate is a major constituent of wheat seeds and chelates metal ions, thus reducing their bioavailability and so the nutritional value of grains. Transgenic plants expressing heterologous phytase are expected to enhance degradation of phytic acid stored in seeds and are proposed to increase the in vitro bioavailability of mineral nutrients. Wheat transgenic plants expressing Aspergillus japonicus phytase gene (phyA) in wheat endosperm were developed till T3 generation. The transgenic lines exhibited 18-99 % increase in phytase activity and 12-76 % reduction of phytic acid content in seeds. The minimum phytic acid content was observed in chapatti (Asian bread) as compared to flour and dough. The transcript profiling of phyA mRNA indicated twofold to ninefold higher expression as compared to non transgenic controls. There was no significant difference in grain nutrient composition of transgenic and non-transgenic seeds. In vitro bioavailability assay for iron and zinc in dough and chapatti of transgenic lines revealed a significant increase in iron and zinc contents. The development of nutritionally enhanced cereals is a step forward to combat nutrition deficiency for iron and zinc in malnourished human population, especially women and children.
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Affiliation(s)
- Nabeela Abid
- Department of Biological Sciences, Armacost Science Building, Forman Christian College (A Chartered University), Lahore, 54600, Pakistan
| | - Asia Khatoon
- National Institute for Biotechnology and Genetic Engineering (NIBGE), Jhang Road, P.O. Box No. 577, Faisalabad, Pakistan
| | - Asma Maqbool
- Department of Biological Sciences, Armacost Science Building, Forman Christian College (A Chartered University), Lahore, 54600, Pakistan
| | - Muhammad Irfan
- Department of Biological Sciences, Armacost Science Building, Forman Christian College (A Chartered University), Lahore, 54600, Pakistan
| | - Aftab Bashir
- National Institute for Biotechnology and Genetic Engineering (NIBGE), Jhang Road, P.O. Box No. 577, Faisalabad, Pakistan
| | - Irsa Asif
- Department of Biological Sciences, Armacost Science Building, Forman Christian College (A Chartered University), Lahore, 54600, Pakistan
| | - Muhammad Shahid
- Department of Biological Sciences, Armacost Science Building, Forman Christian College (A Chartered University), Lahore, 54600, Pakistan
| | - Asma Saeed
- Food and Biotechnology Research Centre, PCSIR Laboratories Complex, Ferozepur Road, Lahore, 54600, Pakistan
| | - Henrik Brinch-Pedersen
- Department of Plant Biology, Danish Institute of Agricultural Sciences, Research Centre Flakkebjerg, 4200, Slagelse, Denmark
| | - Kauser A Malik
- Department of Biological Sciences, Armacost Science Building, Forman Christian College (A Chartered University), Lahore, 54600, Pakistan.
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20
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Ramzani PMA, Khalid M, Naveed M, Ahmad R, Shahid M. Iron biofortification of wheat grains through integrated use of organic and chemical fertilizers in pH affected calcareous soil. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2016; 104:284-93. [PMID: 27179316 DOI: 10.1016/j.plaphy.2016.04.053] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 04/29/2016] [Accepted: 04/29/2016] [Indexed: 05/16/2023]
Abstract
Incidence of iron (Fe) deficiency in human populations is an emerging global challenge. This study was conducted to evaluate the potential of iron sulphate combined with biochar and poultry manure for Fe biofortification of wheat grains in pH affected calcareous soil. In first two incubation studies, rates of sulfur (S) and Fe combined with various organic amendments for lowering pH and Fe availability in calcareous soil were optimized. In pot experiment, best rate of Fe along with biochar (BC) and poultry manure (PM) was evaluated for Fe biofortification of wheat in normal and S treated low pH calcareous soil. Fe applied with BC provided fair increase in root-shoot biomass and photosynthesis up to 79, 53 and 67%, respectively in S treated low pH soil than control. Grain Fe and ferritin concentration was increased up to 1.4 and 1.2 fold, respectively while phytate and polyphenol was decreased 35 and 44%, respectively than control in treatment where Fe was applied with BC and S. In conclusion, combined use of Fe and BC could be an effective approach to improve growth and grain Fe biofortification of wheat in pH affected calcareous soil.
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Affiliation(s)
| | - Muhammad Khalid
- Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, 38040, Pakistan
| | - Muhammad Naveed
- Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, 38040, Pakistan.
| | - Rashid Ahmad
- Department of Agronomy, University of Agriculture Faisalabad, 38040, Pakistan
| | - Muhammad Shahid
- Department of Biochemistry, University of Agriculture Faisalabad, 38040, Pakistan
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21
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Ye MH, Nan YL, Ding MM, Hu JB, Liu Q, Wei WH, Yang SM. Effects of dietary tannic acid on the growth, hepatic gene expression, and antioxidant enzyme activity in Brandt's voles (Microtus brandti). Comp Biochem Physiol B Biochem Mol Biol 2016; 196-197:19-26. [PMID: 26850644 DOI: 10.1016/j.cbpb.2016.01.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Revised: 01/27/2016] [Accepted: 01/29/2016] [Indexed: 11/17/2022]
Abstract
This study was designed to investigate the physiological and biochemical responses of Brandt's voles to the persistent presence of dietary tannic acid. The diet for animals in the experimental group was supplemented with 3% dietary tannic acid for 5weeks. The control group received a commercial lab chow. No significant differences were detected in body weight, organ (heart, kidney, and liver) weights, and organ parameters between animals from two groups. However, voles in the experimental group had significantly higher daily food intake, increased contents of proline and histidine in saliva and feces after protein hydrolysis, and elevated hepatic expression of transferrin than the control. Our results suggested the existence of adaptive strategies developed in Brandt's voles to overcome the adverse effects of dietary tannic acid. (1) Food consumption was increased to satisfy their nutritional demands. (2) The secretion of tannic-acid-binding salivary proteins was promoted. (3) The absorption of iron was enhanced. These alterations contributed to neutralize the negative effects of tannic acid and maintain body mass in animals supplemented with tannic acid. As the result of the consumption of tannic acid, hepatic expression of 3-hydroxy-3-methylglutaryl coenzyme A reductase was significantly decreased, while the overall potential of the antioxidant system, characterized by increased hepatic enzymatic activities of catalase and glutathione peroxidase, was enhanced. Our results also implied the involvement of tannic acid in the regulation of lipid metabolism and oxidative stress in voles.
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Affiliation(s)
- Man-Hong Ye
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou 225009, China
| | - Yan-Lei Nan
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou 225009, China
| | - Meng-Meng Ding
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou 225009, China
| | - Jun-Bang Hu
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou 225009, China
| | - Qian Liu
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou 225009, China
| | - Wan-Hong Wei
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, China
| | - Sheng-Mei Yang
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou 225009, China.
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22
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Ancuceanu R, Dinu M, Hovaneţ MV, Anghel AI, Popescu CV, Negreş S. A Survey of Plant Iron Content-A Semi-Systematic Review. Nutrients 2015; 7:10320-51. [PMID: 26690470 PMCID: PMC4690087 DOI: 10.3390/nu7125535] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 11/18/2015] [Accepted: 11/20/2015] [Indexed: 11/24/2022] Open
Abstract
Iron is an essential mineral nutrient for all living organisms, involved in a plurality of biological processes. Its deficit is the cause of the most common form of anemia in the world: iron deficiency anemia (IDA). This paper reviews iron content in various parts of 1228 plant species and its absorption from herbal products, based on data collected from the literature in a semi-systematic manner. Five hundred genera randomly selected from the Angiosperms group, 215 genera from the Pteridophytes groups and all 95 Gymnosperm genera as listed in the Plant List version 1.1 were used as keywords together with the word "iron" in computerized searches. Iron data about additional genera returned by those searches were extracted and included in the analysis. In total, iron content values for a number of 1228 species, 5 subspecies, and 5 varieties were collected. Descriptive and inferential statistics were used to compare iron contents in various plant parts (whole plant, roots, stems, shoots, leaves, aerial parts, flowers, fruits, seeds, wood, bark, other parts) and exploratory analyses by taxonomic groups and life-forms were carried out. The absorption and potential relevance of herbal iron for iron supplementation are discussed.
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Affiliation(s)
- Robert Ancuceanu
- Faculty of Pharmacy, Department of Pharmaceutical Botany and Cell Biology, Carol Davila University of Medicine and Pharmacy, Bucharest 20956, Romania.
| | - Mihaela Dinu
- Faculty of Pharmacy, Department of Pharmaceutical Botany and Cell Biology, Carol Davila University of Medicine and Pharmacy, Bucharest 20956, Romania.
| | - Marilena Viorica Hovaneţ
- Faculty of Pharmacy, Department of Pharmaceutical Botany and Cell Biology, Carol Davila University of Medicine and Pharmacy, Bucharest 20956, Romania.
| | - Adriana Iuliana Anghel
- Faculty of Pharmacy, Department of Pharmaceutical Botany and Cell Biology, Carol Davila University of Medicine and Pharmacy, Bucharest 20956, Romania.
| | - Carmen Violeta Popescu
- Pharmacy and Dental Medicine, Faculty of Medicine, Department of Microbiology, Virology and Parasitology, "Vasile Goldis" Western University, Arad; S.C. Hofigal S.A, Bucharest 042124, Romania.
| | - Simona Negreş
- Faculty of Pharmacy, Department of Pharmacology, Carol Davila University of Medicine and Pharmacy, Bucharest 20956, Romania.
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Petry N, Boy E, Wirth JP, Hurrell RF. Review: The potential of the common bean (Phaseolus vulgaris) as a vehicle for iron biofortification. Nutrients 2015; 7:1144-73. [PMID: 25679229 PMCID: PMC4344581 DOI: 10.3390/nu7021144] [Citation(s) in RCA: 121] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Accepted: 01/29/2015] [Indexed: 12/11/2022] Open
Abstract
Common beans are a staple food and the major source of iron for populations in Eastern Africa and Latin America. Bean iron concentration is high and can be further increased by biofortification. A major constraint to bean iron biofortification is low iron absorption, attributed to inhibitory compounds such as phytic acid (PA) and polyphenol(s) (PP). We have evaluated the usefulness of the common bean as a vehicle for iron biofortification. High iron concentrations and wide genetic variability have enabled plant breeders to develop high iron bean varieties (up to 10 mg/100 g). PA concentrations in beans are high and tend to increase with iron biofortification. Short-term human isotope studies indicate that iron absorption from beans is low, PA is the major inhibitor, and bean PP play a minor role. Multiple composite meal studies indicate that decreasing the PA level in the biofortified varieties substantially increases iron absorption. Fractional iron absorption from composite meals was 4%–7% in iron deficient women; thus the consumption of 100 g biofortified beans/day would provide about 30%–50% of their daily iron requirement. Beans are a good vehicle for iron biofortification, and regular high consumption would be expected to help combat iron deficiency (ID).
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Affiliation(s)
- Nicolai Petry
- Groundwork LLC, Crans-près-Céligny 1299 Switzerland.
| | - Erick Boy
- International Food Policy Research Institute, Washington, DC 20006-1002, USA.
| | - James P Wirth
- Groundwork LLC, Crans-près-Céligny 1299 Switzerland.
| | - Richard F Hurrell
- Institute of Food, Nutrition and Health, Laboratory of Human Nutrition, ETH Zurich, 8092 Zurich, Switzerland.
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Hoppler M, Egli I, Petry N, Gille D, Zeder C, Walczyk T, Blair MW, Hurrell RF. Iron Speciation in Beans (Phaseolus vulgaris) Biofortified by Common Breeding. J Food Sci 2014; 79:C1629-34. [DOI: 10.1111/1750-3841.12548] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 06/04/2014] [Indexed: 11/27/2022]
Affiliation(s)
- Matthias Hoppler
- Inst. of Food; Nutrition and Health; Laboratory of Human Nutrition; ETH Zurich 8092 Zurich Switzerland
| | - Ines Egli
- ETH -Board; Science Section; 8092 Zurich Switzerland
| | | | - Doreen Gille
- Agroscope; Inst. for Food Sciences (IFS); 3003 Bern Switzerland
| | - Christophe Zeder
- Inst. of Food; Nutrition and Health; Laboratory of Human Nutrition; ETH Zurich 8092 Zurich Switzerland
| | - Thomas Walczyk
- Dept. of Chemistry (Science) and Dept. of Biochemistry (Medicine); National Univ. of Singapore; 117543 Singapore
| | - Matthew W. Blair
- Dept. of Agriculture and Environmental Sciences; Tennessee State Univ; Nashville TN 37209 USA
| | - Richard F. Hurrell
- Inst. of Food; Nutrition and Health; Laboratory of Human Nutrition; ETH Zurich 8092 Zurich Switzerland
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25
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Wang X, Ai T, Meng X, Zhou J, Mao X. In vitro iron absorption of α-lactalbumin hydrolysate-iron and β-lactoglobulin hydrolysate-iron complexes. J Dairy Sci 2014; 97:2559-66. [DOI: 10.3168/jds.2013-7461] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Accepted: 01/07/2014] [Indexed: 02/01/2023]
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Shahzad Z, Rouached H, Rakha A. Combating Mineral Malnutrition through Iron and Zinc Biofortification of Cereals. Compr Rev Food Sci Food Saf 2014; 13:329-346. [PMID: 33412655 DOI: 10.1111/1541-4337.12063] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2013] [Accepted: 01/27/2014] [Indexed: 01/26/2023]
Abstract
Iron and zinc are 2 important nutrients in the human diet. Their deficiencies in humans lead to a variety of health-related problems. Iron and zinc biofortification of cereals is considered a cost-effective solution to overcome the malnutrition of these minerals. Biofortification aims at either increasing accumulation of these minerals in edible parts, endosperm, or to increase their bioavailability. Iron and zinc fertilization management positively influence their accumulation in cereal grains. Regarding genetic strategies, quantitative genetic studies show the existence of ample variation for iron and zinc accumulation as well as inhibitors or promoters of their bioavailability in cereal grains. However, the genes underlying this variation have rarely been identified and never used in breeding programs. Genetically modified cereals developed by modulation of genes involved in iron and zinc homeostasis, or genes influencing bioavailability, have shown promising results. However, iron and zinc concentration were quantified in the whole grains during most of the studies, whereas a significant proportion of them is lost during milling. This makes it difficult to realistically assess the effectiveness of the different strategies. Moreover, modifications in the accumulation of toxic elements, like cadmium and arsenic, that are of concern for food safety are rarely determined. Trials in living organisms with iron- and zinc-biofortified cereals also remain to be undertaken. This review focuses on the common challenges and their possible solutions related to agronomic as well as genetic iron and zinc biofortification of cereals.
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Affiliation(s)
- Zaigham Shahzad
- Biochimie et Physiologie Moléculaire des Plantes, UMR 5004 Montpellier SupAgro/CNRS/INRA/Univ, Montpellier II, 2 Place Viala, F-34060 Montpellier cedex 1, France
| | - Hatem Rouached
- Biochimie et Physiologie Moléculaire des Plantes, UMR 5004 Montpellier SupAgro/CNRS/INRA/Univ, Montpellier II, 2 Place Viala, F-34060 Montpellier cedex 1, France
| | - Allah Rakha
- Natl. Inst. of Food Science and Technology, Univ. of Agriculture, Faisalabad, Pakistan
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Powell JJ, Bruggraber SFA, Faria N, Poots LK, Hondow N, Pennycook TJ, Latunde-Dada GO, Simpson RJ, Brown AP, Pereira DIA. A nano-disperse ferritin-core mimetic that efficiently corrects anemia without luminal iron redox activity. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2014; 10:1529-38. [PMID: 24394211 PMCID: PMC4315135 DOI: 10.1016/j.nano.2013.12.011] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Revised: 12/18/2013] [Accepted: 12/24/2013] [Indexed: 11/24/2022]
Abstract
The 2-5 nm Fe(III) oxo-hydroxide core of ferritin is less ordered and readily bioavailable compared to its pure synthetic analogue, ferrihydrite. We report the facile synthesis of tartrate-modified, nano-disperse ferrihydrite of small primary particle size, but with enlarged or strained lattice structure (~ 2.7 Å for the main Bragg peak versus 2.6 Å for synthetic ferrihydrite). Analysis indicated that co-precipitation conditions can be achieved for tartrate inclusion into the developing ferrihydrite particles, retarding both growth and crystallization and favoring stabilization of the cross-linked polymeric structure. In murine models, gastrointestinal uptake was independent of luminal Fe(III) reduction to Fe(II) and, yet, absorption was equivalent to that of ferrous sulphate, efficiently correcting the induced anemia. This process may model dietary Fe(III) absorption and potentially provide a side effect-free form of cheap supplemental iron. From the Clinical Editor Small size tartrate-modified, nano-disperse ferrihydrite was used for efficient gastrointestinal delivery of soluble Fe(III) without the risk for free radical generation in murine models. This method may provide a potentially side effect-free form iron supplementation.
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Affiliation(s)
- Jonathan J Powell
- MRC Human Nutrition Research, Elsie Widdowson Laboratory, Cambridge, UK.
| | | | - Nuno Faria
- MRC Human Nutrition Research, Elsie Widdowson Laboratory, Cambridge, UK
| | - Lynsey K Poots
- MRC Human Nutrition Research, Elsie Widdowson Laboratory, Cambridge, UK
| | - Nicole Hondow
- Institute for Materials Research, School of Process, Environmental and Materials Engineering, University of Leeds, Leeds, UK
| | - Timothy J Pennycook
- SuperSTEM, Daresbury Laboratories, Warrington, UK; Department of Materials, University of Oxford, Oxford, UK
| | - Gladys O Latunde-Dada
- Diabetes & Nutritional Sciences Division, School of Medicine, King's College London, London, UK
| | - Robert J Simpson
- Diabetes & Nutritional Sciences Division, School of Medicine, King's College London, London, UK
| | - Andy P Brown
- Institute for Materials Research, School of Process, Environmental and Materials Engineering, University of Leeds, Leeds, UK
| | - Dora I A Pereira
- MRC Human Nutrition Research, Elsie Widdowson Laboratory, Cambridge, UK
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Potential of phytase-mediated iron release from cereal-based foods: a quantitative view. Nutrients 2013; 5:3074-98. [PMID: 23917170 PMCID: PMC3775243 DOI: 10.3390/nu5083074] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 07/01/2013] [Accepted: 07/17/2013] [Indexed: 12/23/2022] Open
Abstract
The major part of iron present in plant foods such as cereals is largely unavailable for direct absorption in humans due to complexation with the negatively charged phosphate groups of phytate (myo-inositol (1,2,3,4,5,6)-hexakisphosphate). Human biology has not evolved an efficient mechanism to naturally release iron from iron phytate complexes. This narrative review will evaluate the quantitative significance of phytase-catalysed iron release from cereal foods. In vivo studies have shown how addition of microbially derived phytases to cereal-based foods has produced increased iron absorption via enzyme-catalysed dephosphorylation of phytate, indicating the potential of this strategy for preventing and treating iron deficiency anaemia. Despite the immense promise of this strategy and the prevalence of iron deficiency worldwide, the number of human studies elucidating the significance of phytase-mediated improvements in iron absorption and ultimately in iron status in particularly vulnerable groups is still low. A more detailed understanding of (1) the uptake mechanism for iron released from partially dephosphorylated phytate chelates, (2) the affinity of microbially derived phytases towards insoluble iron phytate complexes, and (3) the extent of phytate dephosphorylation required for iron release from inositol phosphates is warranted. Phytase-mediated iron release can improve iron absorption from plant foods. There is a need for development of innovative strategies to obtain better effects.
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Bodnar AL, Proulx AK, Scott MP, Beavers A, Reddy MB. Iron bioavailability of maize hemoglobin in a Caco-2 cell culture model. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:7349-7356. [PMID: 23834908 DOI: 10.1021/jf3020188] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Maize ( Zea mays ) is an important staple crop in many parts of the world but has low iron bioavailability, in part due to its high phytate content. Hemoglobin is a form of iron that is highly bioavailable, and its bioavailability is not inhibited by phytate. It was hypothesized that maize hemoglobin is a highly bioavailable iron source and that biofortification of maize with iron can be accomplished by overexpression of maize globin in the endosperm. Maize was transformed with a gene construct encoding a translational fusion of maize globin and green fluorescent protein under transcriptional control of the maize 27 kDa γ-zein promoter. Iron bioavailability of maize hemoglobin produced in Escherichia coli and of stably transformed seeds expressing the maize globin-GFP fusion was determined using an in vitro Caco-2 cell culture model. Maize flour fortified with maize hemoglobin was found to have iron bioavailability that is not significantly different from that of flour fortified with ferrous sulfate or bovine hemoglobin but is significantly higher than unfortified flour. Transformed maize grain expressing maize globin was found to have iron bioavailability similar to that of untransformed seeds. These results suggest that maize globin produced in E. coli may be an effective iron fortificant, but overexpressing maize globin in maize endosperm may require a different strategy to increase bioavailable iron content in maize.
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Affiliation(s)
- Anastasia L Bodnar
- Interdepartmental Genetics Graduate Program, Iowa State University, Ames, Iowa 50011, United States
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Advantages and disadvantages of the animal models v. in vitro studies in iron metabolism: a review. Animal 2013; 7:1651-8. [PMID: 23790319 DOI: 10.1017/s1751731113001134] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Iron deficiency is the most common nutritional deficiency in the world. Special molecules have evolved for iron acquisition, transport and storage in soluble, nontoxic forms. Studies about the effects of iron on health are focused on iron metabolism or nutrition to prevent or treat iron deficiency and anemia. These studies are focused in two main aspects: (1) basic studies to elucidate iron metabolism and (2) nutritional studies to evaluate the efficacy of iron supplementation to prevent or treat iron deficiency and anemia. This paper reviews the advantages and disadvantages of the experimental models commonly used as well as the methods that are more used in studies related to iron. In vitro studies have used different parts of the gut. In vivo studies are done in humans and animals such as mice, rats, pigs and monkeys. Iron metabolism is a complex process that includes interactions at the systemic level. In vitro studies, despite physiological differences to humans, are useful to increase knowledge related to this essential micronutrient. Isotopic techniques are the most recommended in studies related to iron, but their high cost and required logistic, making them difficult to use. The depletion-repletion of hemoglobin is a method commonly used in animal studies. Three depletion-repletion techniques are mostly used: hemoglobin regeneration efficiency, relative biological values (RBV) and metabolic balance, which are official methods of the association of official analytical chemists. These techniques are well-validated to be used as studies related to iron and their results can be extrapolated to humans. Knowledge about the main advantages and disadvantages of the in vitro and animal models, and methods used in these studies, could increase confidence of researchers in the experimental results with less costs.
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Wang M, Gruissem W, Bhullar NK. Nicotianamine synthase overexpression positively modulates iron homeostasis-related genes in high iron rice. FRONTIERS IN PLANT SCIENCE 2013; 4:156. [PMID: 23755054 PMCID: PMC3665926 DOI: 10.3389/fpls.2013.00156] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Accepted: 05/07/2013] [Indexed: 05/18/2023]
Abstract
Nearly one-third of the world population, mostly women and children, suffer from iron malnutrition and its consequences, such as anemia or impaired mental development. Biofortification of rice, which is a staple crop for nearly half of the world's population, can significantly contribute in alleviating iron deficiency. NFP rice (transgenic rice expressing nicotianamine synthase, ferritin and phytase genes) has a more than six-fold increase in iron content in polished rice grains, resulting from the synergistic action of nicotianamine synthase (NAS) and ferritin transgenes. We investigated iron homeostasis in NFP plants by analyzing the expression of 28 endogenous rice genes known to be involved in the homeostasis of iron and other metals, in iron-deficient and iron-sufficient conditions. RNA was collected from different tissues (roots, flag leaves, grains) and at three developmental stages during grain filling. NFP plants showed increased sensitivity to iron-deficiency conditions and changes in the expression of endogenous genes involved in nicotianamine (NA) metabolism, in comparison to their non-transgenic siblings (NTS). Elevated transcript levels were detected in NFP plants for several iron transporters. In contrast, expression of OsYSL2, which encodes a member of yellow stripe like protein family, and a transporter of the NA-Fe(II) complex was reduced in NFP plants under low iron conditions, indicating that expression of OsYSL2 is regulated by the endogenous iron status. Expression of the transgenes did not significantly affect overall iron homeostasis in NFP plants, which establishes the engineered push-pull mechanism as a suitable strategy to increase rice endosperm iron content.
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Affiliation(s)
| | | | - Navreet K. Bhullar
- Plant Biotechnology, Department of Biology, Swiss Federal Institute of TechnologyZürich, Switzerland
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Ali N, Paul S, Gayen D, Sarkar SN, Datta SK, Datta K. RNAi mediated down regulation of myo-inositol-3-phosphate synthase to generate low phytate rice. RICE (NEW YORK, N.Y.) 2013; 6:12. [PMID: 24280240 PMCID: PMC4883737 DOI: 10.1186/1939-8433-6-12] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2012] [Accepted: 05/07/2013] [Indexed: 05/03/2023]
Abstract
BACKGROUND Phytic acid (InsP6) is considered as the major source of phosphorus and inositol phosphates in cereal grains. Reduction of phytic acid level in cereal grains is desirable in view of its antinutrient properties to maximize mineral bioavailability and minimize the load of phosphorus waste management. We report here RNAi mediated seed-specific silencing of myo-inositol-3-phosphate synthase (MIPS) gene catalyzing the first step of phytic acid biosynthesis in rice. Moreover, we also studied the possible implications of MIPS silencing on myo-inositol and related metabolism, since, first step of phytic acid biosynthesis is also the rate limiting step of myo-inositol synthesis, catalyzed by MIPS. RESULTS The resulting transgenic rice plants (T3) showed a 4.59 fold down regulation in MIPS gene expression, which corresponds to a significant decrease in phytate levels and a simultaneous increment in the amount of inorganic phosphate in the seeds. A diminution in the myo-inositol content of transgenic plants was also observed due to disruption of the first step of phytic acid biosynthetic pathway, which further reduced the level of ascorbate and altered abscisic acid (ABA) sensitivity of the transgenic plants. In addition, our results shows that in the transgenic plants, the lower phytate levels has led to an increment of divalent cations, of which a 1.6 fold increase in the iron concentration in milled rice seeds was noteworthy. This increase could be attributed to reduced chelation of divalent metal (iron) cations, which may correlate to higher iron bioavailability in the endosperm of rice grains. CONCLUSION The present study evidently suggests that seed-specific silencing of MIPS in transgenic rice plants can yield substantial reduction in levels of phytic acid along with an increase in inorganic phosphate content. However, it was also demonstrated that the low phytate seeds had an undesirable diminution in levels of myo-inositol and ascorbate, which probably led to sensitiveness of seeds to abscisic acid during germination. Therefore, it is suggested that though MIPS is the prime target for generation of low phytate transgenic plants, down-regulation of MIPS can have detrimental effect on myo-inositol synthesis and related pathways which are involved in key plant metabolism.
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Affiliation(s)
- Nusrat Ali
- />Plant Molecular Biology and Biotechnology Laboratory, Department of Botany, University of Calcutta, 35, Ballygunge Circular road, Kolkata, 700019 WB India
| | - Soumitra Paul
- />Plant Molecular Biology and Biotechnology Laboratory, Department of Botany, University of Calcutta, 35, Ballygunge Circular road, Kolkata, 700019 WB India
| | - Dipak Gayen
- />Plant Molecular Biology and Biotechnology Laboratory, Department of Botany, University of Calcutta, 35, Ballygunge Circular road, Kolkata, 700019 WB India
| | - Sailendra Nath Sarkar
- />Plant Molecular Biology and Biotechnology Laboratory, Department of Botany, University of Calcutta, 35, Ballygunge Circular road, Kolkata, 700019 WB India
| | - Swapan K Datta
- />Plant Molecular Biology and Biotechnology Laboratory, Department of Botany, University of Calcutta, 35, Ballygunge Circular road, Kolkata, 700019 WB India
- />Division of Crop Science, Indian Council of Agricultural Research (ICAR), Krishi Bhavan, Dr. Rajendra Prasad Road, New Delhi, 110001 India
| | - Karabi Datta
- />Plant Molecular Biology and Biotechnology Laboratory, Department of Botany, University of Calcutta, 35, Ballygunge Circular road, Kolkata, 700019 WB India
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Murgia I, Arosio P, Tarantino D, Soave C. Biofortification for combating 'hidden hunger' for iron. TRENDS IN PLANT SCIENCE 2012; 17:47-55. [PMID: 22093370 DOI: 10.1016/j.tplants.2011.10.003] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2011] [Revised: 09/14/2011] [Accepted: 10/07/2011] [Indexed: 05/20/2023]
Abstract
Micronutrient deficiencies are responsible for so-called 'hidden undernutrition'. In particular, iron (Fe) deficiency adversely affects growth, immune function and can cause anaemia. However, supplementation of iron can exacerbate infectious diseases and current policies of iron therapy carefully evaluate the risks and benefits of these interventions. Here we review the approaches of biofortification of valuable crops for reducing 'hidden undernutrition' of iron in the light of the latest nutritional and medical advances. The increase of iron and prebiotics in edible parts of plants is expected to improve health, whereas the reduction of phytic acid concentration, in crops valuable for human diet, might be less beneficial for the developed countries, or for the developing countries exposed to endemic infections.
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Affiliation(s)
- Irene Murgia
- Sezione di Fisiologia e Biochimica delle Piante, Dipartimento di Biologia, Università degli Studi di Milano, via Celoria 26, 20133 Milano, Italy.
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Abstract
The intestinal tract, known for its capability for self-renew, represents the first barrier of defence between the organism and its luminal environment. The thiol/disulfide redox systems comprising the glutathione/glutathione disulfide (GSH/GSSG), cysteine/cystine (Cys/CySS) and reduced and oxidized thioredoxin (Trx/TrxSS) redox couples play important roles in preserving tissue redox homeostasis, metabolic functions, and cellular integrity. Control of the thiol-disulfide status at the luminal surface is essential for maintaining mucus fluidity and absorption of nutrients, and protection against chemical-induced oxidant injury. Within intestinal cells, these redox couples preserve an environment that supports physiological processes and orchestrates networks of enzymatic reactions against oxidative stress. In this review, we focus on the intestinal redox and antioxidant systems, their subcellular compartmentation, redox signalling and epithelial turnover, and contribution of luminal microbiota, key aspects that are relevant to understanding redox-dependent processes in gut biology with implications for degenerative digestive disorders, such as inflammation and cancer.
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Affiliation(s)
- Magdalena L Circu
- Department of Molecular & Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, LA, USA
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Micronutrients deficiency and associated sociodemographic factors in Chinese children. World J Pediatr 2011; 7:217-23. [PMID: 21822989 PMCID: PMC4247338 DOI: 10.1007/s12519-011-0317-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2011] [Accepted: 06/20/2011] [Indexed: 10/17/2022]
Abstract
BACKGROUND Although the prevalence of malnutrition has decreased, micronutrient deficiency still exists among children. While iron level has been studied, limited information on serum levels of zinc in Chinese children is available. This study aims to describe the status of micronutrients and its association with sociodemographic factors, and to assess associated risk factors. METHODS A cross-sectional study was performed on 1375 Chinese preschool children. Venous blood samples were collected and analyzed for zinc and iron by atomic absorption spectrophotometry. Sociodemographic information was obtained from self-administered questionnaires given to the parents. RESULTS The high prevalence of low serum zinc (38.2%) and iron (24.3%) was found. Children from rural preschools had the lowest zinc levels, whereas those from urban preschools had the lowest iron levels. Children living in small houses had the highest prevalence of low serum zinc (47.1%), and children from small families (≤3 persons) had a higher prevalence of low serum zinc than those from large families (41.8% vs. 34.1%). CONCLUSIONS Our findings in the recent socioeconomic development of China suggest the need for continuous monitoring of nutritional factors and highlight the importance of public health implication in preschool children even in developed regions.
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Emami K, Morris NJ, Cockell SJ, Golebiowska G, Shu QY, Gatehouse AMR. Changes in protein expression profiles between a low phytic acid rice ( Oryza sativa L. Ssp. japonica) line and its parental line: a proteomic and bioinformatic approach. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:6912-6922. [PMID: 20441221 DOI: 10.1021/jf904082b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The seed proteome of a low phytic acid (lpa) rice line (Os-lpa-XS110-1), developed as a novel food source, was compared to that of its parental line, Xiushui 110 (XS-110). Analysis by surfaced enhanced laser desorption ionization-time-of-flight mass spectrometry (SELDI-TOF MS) and two-dimensional gel electrophoresis (2-DE) allowed the detection of a potential low molecular weight biomarker and identification of 23 differentially expressed proteins that include stress-related proteins, storage proteins, and potential allergens. Bioinformatic analyses revealed that triose phosphate isomerase (TPI) and fructose bisphosphatealdolase (FBA), two major differentially expressed proteins, are involved in myo-inositol metabolism. Accumulation of globulin was also significantly decreased in the lpa line. This study demonstrates the potential of proteomic and bioinformatic profiling techniques for safety assessment of novel foods. Furthermore, these techniques provide powerful tools for studying functional genomics due to the possibility of identifying genes related to the mutated traits.
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Affiliation(s)
- Kaveh Emami
- School of Biology, Institute for Research on Environment and Sustainability, Newcastle University, Newcastle upon Tyne NE17RU, United Kingdom
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