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Han X, Li C, Qin G, Wang X, Zhang B, Lin Q. Growth increase and gonadal dysfunction of the lined seahorse triggered by zinc exposure. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2024; 272:106947. [PMID: 38776607 DOI: 10.1016/j.aquatox.2024.106947] [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: 02/22/2024] [Revised: 05/10/2024] [Accepted: 05/12/2024] [Indexed: 05/25/2024]
Abstract
Seahorses are characterized by unique characteristics such as a male pregnancy reproductive strategy and grasping preferences, which make these species vulnerable to various environmental risks. Zinc (Zn) is one of the most frequently occurring toxic elements in coastal waters; however, little is known about the effect of Zn exposure on seahorses. In the present study, line seahorses (Hippocampus erectus) were exposed to waterborne Zn (0.2 and 1.0 mg/L) and the impact on growth and gonadal development was investigated. Zn exposure induced growth improvement, but also led to gonadal dysfunction in the lined seahorse. Female seahorses exhibited high testosterone levels, immature follicles, and weight increase after Zn exposure, which is the typical characteristics of a polycystic ovary syndrome (PCOS)-like phenotype. Transcriptomic data suggested that the Zn-induced growth promotion resulted from the dysregulated expression of fat accumulation genes. Further investigation of gene expression profiles in the brain, ovaries, and testes indicated that Zn affected the expression of genes involved in growth, immunity, tissue remodeling, and gonadal development by regulating serum steroid hormone levels and androgen receptor expression. This study not only clarifies the complex impact of Zn on seahorses using physiological, histological, and molecular evidence but can also provide new insights into the mechanism underlying PCOS in reproductive-aged women. Moreover, this work demonstrates the risk of the common practice of Zn supplementation in the aquaculture industry as the consequent growth yield may not represent a healthy condition.
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Affiliation(s)
- Xue Han
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing 100101, China
| | - Chunyan Li
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing 100101, China; Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China.
| | - Geng Qin
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences Guangzhou 510301, China; Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Xin Wang
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences Guangzhou 510301, China; Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Bo Zhang
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences Guangzhou 510301, China; Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Qiang Lin
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing 100101, China; Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
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Cañadas-Garre M, Baños-Jaime B, Maqueda JJ, Smyth LJ, Cappa R, Skelly R, Hill C, Brennan EP, Doyle R, Godson C, Maxwell AP, McKnight AJ. Genetic variants affecting mitochondrial function provide further insights for kidney disease. BMC Genomics 2024; 25:576. [PMID: 38858654 PMCID: PMC11163707 DOI: 10.1186/s12864-024-10449-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 05/24/2024] [Indexed: 06/12/2024] Open
Abstract
BACKGROUND Chronic kidney disease (CKD) is a complex disorder that has become a high prevalence global health problem, with diabetes being its predominant pathophysiologic driver. Autosomal genetic variation only explains some of the predisposition to kidney disease. Variations in the mitochondrial genome (mtDNA) and nuclear-encoded mitochondrial genes (NEMG) are implicated in susceptibility to kidney disease and CKD progression, but they have not been thoroughly explored. Our aim was to investigate the association of variation in both mtDNA and NEMG with CKD (and related traits), with a particular focus on diabetes. METHODS We used the UK Biobank (UKB) and UK-ROI, an independent collection of individuals with type 1 diabetes mellitus (T1DM) patients. RESULTS Fourteen mitochondrial variants were associated with estimated glomerular filtration rate (eGFR) in UKB. Mitochondrial variants and haplogroups U, H and J were associated with eGFR and serum variables. Mitochondrial haplogroup H was associated with all the serum variables regardless of the presence of diabetes. Mitochondrial haplogroup X was associated with end-stage kidney disease (ESKD) in UKB. We confirmed the influence of several known NEMG on kidney disease and function and found novel associations for SLC39A13, CFL1, ACP2 or ATP5G1 with serum variables and kidney damage, and for SLC4A1, NUP210 and MYH14 with ESKD. The G allele of TBC1D32-rs113987180 was associated with higher risk of ESKD in patients with diabetes (OR:9.879; CI95%:4.440-21.980; P = 2.0E-08). In UK-ROI, AGXT2-rs71615838 and SURF1-rs183853102 were associated with diabetic nephropathies, and TFB1M-rs869120 with eGFR. CONCLUSIONS We identified novel variants both in mtDNA and NEMG which may explain some of the missing heritability for CKD and kidney phenotypes. We confirmed the role of MT-ND5 and mitochondrial haplogroup H on renal disease (serum variables), and identified the MT-ND5-rs41535848G variant, along with mitochondrial haplogroup X, associated with higher risk of ESKD. Despite most of the associations were independent of diabetes, we also showed potential roles for NEMG in T1DM.
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Affiliation(s)
- Marisa Cañadas-Garre
- Molecular Epidemiology and Public Health Research Group, Centre for Public Health,, Queen's University Belfast, Institute for Clinical Sciences A, Royal Victoria Hospital, Belfast, BT12 6BA, UK.
- Genomic Oncology Area, Centre for Genomics and Oncological Research: Pfizer, GENYO, University of Granada-Andalusian Regional Government, PTS Granada. Avenida de La Ilustración 114, 18016, Granada, Spain.
- Hematology Department, Hospital Universitario Virgen de Las Nieves, Avenida de Las Fuerzas Armadas 2, 18014, Granada, Spain.
- Instituto de Investigación Biosanitaria de Granada (Ibs.GRANADA), Avda. de Madrid, 15, 18012, Granada, Spain.
| | - Blanca Baños-Jaime
- Molecular Epidemiology and Public Health Research Group, Centre for Public Health,, Queen's University Belfast, Institute for Clinical Sciences A, Royal Victoria Hospital, Belfast, BT12 6BA, UK
- Instituto de Investigaciones Químicas (IIQ), Centro de Investigaciones Científicas Isla de La Cartuja (cicCartuja), Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Sevilla, Avda. Américo Vespucio 49, 41092, Seville, Spain
| | - Joaquín J Maqueda
- Molecular Epidemiology and Public Health Research Group, Centre for Public Health,, Queen's University Belfast, Institute for Clinical Sciences A, Royal Victoria Hospital, Belfast, BT12 6BA, UK
- Experimental Oncology Laboratory, IRCCS Rizzoli Orthopaedic Institute, 40136, Bologna, Italy
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), University of Bologna, 40126, Bologna, Italy
| | - Laura J Smyth
- Molecular Epidemiology and Public Health Research Group, Centre for Public Health,, Queen's University Belfast, Institute for Clinical Sciences A, Royal Victoria Hospital, Belfast, BT12 6BA, UK
| | - Ruaidhri Cappa
- Molecular Epidemiology and Public Health Research Group, Centre for Public Health,, Queen's University Belfast, Institute for Clinical Sciences A, Royal Victoria Hospital, Belfast, BT12 6BA, UK
| | - Ryan Skelly
- Molecular Epidemiology and Public Health Research Group, Centre for Public Health,, Queen's University Belfast, Institute for Clinical Sciences A, Royal Victoria Hospital, Belfast, BT12 6BA, UK
| | - Claire Hill
- Molecular Epidemiology and Public Health Research Group, Centre for Public Health,, Queen's University Belfast, Institute for Clinical Sciences A, Royal Victoria Hospital, Belfast, BT12 6BA, UK
| | - Eoin P Brennan
- UCD Diabetes Complications Research Centre, Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, D04 V1W8, Ireland
- School of Medicine, University College Dublin, Dublin, D04 V1W8, Ireland
| | - Ross Doyle
- UCD Diabetes Complications Research Centre, Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, D04 V1W8, Ireland
- School of Medicine, University College Dublin, Dublin, D04 V1W8, Ireland
- Mater Misericordiae University Hospital, Eccles St, Dublin, D07 R2WY, Ireland
| | - Catherine Godson
- UCD Diabetes Complications Research Centre, Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, D04 V1W8, Ireland
- School of Medicine, University College Dublin, Dublin, D04 V1W8, Ireland
| | - Alexander P Maxwell
- Molecular Epidemiology and Public Health Research Group, Centre for Public Health,, Queen's University Belfast, Institute for Clinical Sciences A, Royal Victoria Hospital, Belfast, BT12 6BA, UK
- Regional Nephrology Unit, Belfast City Hospital, Level 11Lisburn Road, Belfast, BT9 7AB, UK
| | - Amy Jayne McKnight
- Molecular Epidemiology and Public Health Research Group, Centre for Public Health,, Queen's University Belfast, Institute for Clinical Sciences A, Royal Victoria Hospital, Belfast, BT12 6BA, UK
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Mishra S, Stany B, Das A, Kanagavel D, Vijayan M. A Comprehensive Review of Membrane Transporters and MicroRNA Regulation in Alzheimer's Disease. Mol Neurobiol 2024:10.1007/s12035-024-04135-2. [PMID: 38558361 DOI: 10.1007/s12035-024-04135-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 03/15/2024] [Indexed: 04/04/2024]
Abstract
Alzheimer's disease (AD) is a distressing neurodegenerative condition characterized by the accumulation of amyloid-beta (Aβ) plaques and tau tangles within the brain. The interconnectedness between membrane transporters (SLCs) and microRNAs (miRNAs) in AD pathogenesis has gained increasing attention. This review explores the localization, substrates, and functions of SLC transporters in the brain, emphasizing the roles of transporters for glutamate, glucose, nucleosides, and other essential compounds. The examination delves into the significance of SLCs in AD, their potential for drug development, and the intricate realm of miRNAs, encompassing their transcription, processing, functions, and regulation. MiRNAs have emerged as significant players in AD, including those associated with mitochondria and synapses. Furthermore, this review discusses the intriguing nexus of miRNAs targeting SLC transporters and their potential as therapeutic targets in AD. Finally, the review underscores the interaction between SLC transporters and miRNA regulation within the context of Alzheimer's disease, underscoring the need for further research in this area. This comprehensive review aims to shed light on the complex mechanisms underlying the causation of AD and provides insights into potential therapeutic approaches.
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Affiliation(s)
- Shatakshi Mishra
- School of Biosciences and Technology, Department of Biotechnology, VIT University, Vellore, Tamil Nadu, 632014, India
| | - B Stany
- School of Biosciences and Technology, Department of Biotechnology, VIT University, Vellore, Tamil Nadu, 632014, India
| | - Anushka Das
- School of Biosciences and Technology, Department of Biotechnology, VIT University, Vellore, Tamil Nadu, 632014, India
| | - Deepankumar Kanagavel
- School of Biosciences and Technology, Department of Biotechnology, VIT University, Vellore, Tamil Nadu, 632014, India.
| | - Murali Vijayan
- Department of Internal Medicine, Texas Tech University Health Sciences Center, 3601 4th Street, Lubbock, TX, 79430, USA.
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van Baal J, Kruijt L, Binnendijk GP, Durosoy S, Romeo A, Bikker P. Influence of copper source and dietary inclusion level on growth performance of weaned pigs and expression of trace element related genes in the small intestine. Animal 2024; 18:101113. [PMID: 38492538 DOI: 10.1016/j.animal.2024.101113] [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: 07/14/2023] [Revised: 02/05/2024] [Accepted: 02/09/2024] [Indexed: 03/18/2024] Open
Abstract
Copper is routinely supplemented to weanling pig diets at concentrations above nutritional requirements to enhance growth performance. We hypothesised that this effect depends on the source of Cu and its dietary concentration. We tested this in weaned pigs (26 d of age) over a 35-d period using a 2 × 3 factorial arrangement with two Cu-sources (CuSO4 and Cu2O, monovalent copper oxide, CoRouge®) and three supplementary dietary Cu-levels (15, 80 and 160 mg Cu/kg) as respective factors. Increasing Cu level linearly increased (P < 0.001) final BW and daily gain. These effects tended (P = 0.09) to be greater with Cu2O than CuSO4. Feed conversion ratio decreased linearly (P < 0.001) with increasing dietary Cu content, independent of Cu source. Plasma Cu, Zn and Fe levels were unaffected, whereas liver Cu content increased quadratically (P < 0.001) with increasing dietary Cu content, with a larger increase (P < 0.001) with CuSO4 than Cu2O. Bile Cu content increased quadratically (P = 0.025) with increasing Cu content, irrespective of Cu source. RT-qPCR analysis revealed that increasing Cu content quadratically (P = 0.009) increased duodenal but not ileal metallothionein 1A (MT1A) mRNA, with greater effect (P = 0.010) of CuSO4. Regardless of the Cu source, increasing Cu dose linearly increased (P = 0.006) duodenal DMT1/SLC11A2 mRNA but decreased ZIP4/SLC39A4 mRNA in duodenum (P < 0.001) and ileum (P < 0.005). ZnT10/SLC30A10 mRNA was significantly (P = 0.021) and numerically (P = 0.061) greater with Cu2O compared to CuSO4, in duodenum and ileum, respectively. Copper content quadratically modulated duodenal but not ileal transferrin receptor (P = 0.029) and ferric reductase CYBRD1 mRNA (P = 0.022). In hypothalamus, high Cu dose (P = 0.024) and Cu2O as source (P = 0.028) reduced corticotropin-releasing hormone (CRH) mRNA. Low versus high CuSO4 increased corticotropin-releasing hormone receptor (CRHR2) mRNA, while low Cu2O had the opposite effect (P = 0.009). In conclusion, incremental Cu intake enhanced growth performance, with a tendency for a greater effect of Cu2O. The lower increase in duodenal MT1A mRNA and liver Cu content indicates that less Cu from Cu2O was absorbed by gut and sequestered in liver. Thus, high Cu absorption is not essential for its growth-promoting effect and dietary Cu may affect intestinal Fe and Zn absorption via the active, transcellular route. The effects on hypothalamic CRH and CRHR2 expression indicate a role for the hypothalamus in mediating the effects of Cu on growth performance.
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Affiliation(s)
- J van Baal
- Wageningen University & Research, Animal Nutrition Group, Wageningen, the Netherlands
| | - L Kruijt
- Wageningen University & Research, Wageningen Livestock Research, Wageningen, the Netherlands
| | - G P Binnendijk
- Wageningen University & Research, Wageningen Livestock Research, Wageningen, the Netherlands
| | - S Durosoy
- R&D Department, Animine, Annecy, France
| | - A Romeo
- R&D Department, Animine, Annecy, France
| | - P Bikker
- Wageningen University & Research, Wageningen Livestock Research, Wageningen, the Netherlands.
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Sun J, Xie F, Wang J, Luo J, Chen T, Jiang Q, Xi Q, Liu GE, Zhang Y. Integrated meta-omics reveals the regulatory landscape involved in lipid metabolism between pig breeds. MICROBIOME 2024; 12:33. [PMID: 38374121 PMCID: PMC10877772 DOI: 10.1186/s40168-023-01743-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Accepted: 12/19/2023] [Indexed: 02/21/2024]
Abstract
BACKGROUND Domesticated pigs serve as an ideal animal model for biomedical research and also provide the majority of meat for human consumption in China. Porcine intramuscular fat content associates with human health and diseases and is essential in pork quality. The molecular mechanisms controlling lipid metabolism and intramuscular fat accretion across tissues in pigs, and how these changes in response to pig breeds, remain largely unknown. RESULTS We surveyed the tissue-resident cell types of the porcine jejunum, colon, liver, and longissimus dorsi muscle between Lantang and Landrace breeds by single-cell RNA sequencing. Combining lipidomics and metagenomics approaches, we also characterized gene signatures and determined key discriminating markers of lipid digestibility, absorption, conversion, and deposition across tissues in two pig breeds. In Landrace, lean-meat swine mainly exhibited breed-specific advantages in lipid absorption and oxidation for energy supply in small and large intestinal epitheliums, nascent high-density lipoprotein synthesis for reverse cholesterol transport in enterocytes and hepatocytes, bile acid formation, and secretion for fat emulsification in hepatocytes, as well as intestinal-microbiota gene expression involved in lipid accumulation product. In Lantang, obese-meat swine showed a higher synthesis capacity of chylomicrons responsible for high serum triacylglycerol levels in small intestinal epitheliums, the predominant characteristics of lipid absorption in muscle tissue, and greater intramuscular adipcytogenesis potentials from muscular fibro-adipogenic progenitor subpopulation. CONCLUSIONS The findings enhanced our understanding of the cellular biology of lipid metabolism and opened new avenues to improve animal production and human diseases. Video Abstract.
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Affiliation(s)
- Jiajie Sun
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Fang Xie
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Jing Wang
- Institute of Animal Husbandry and Veterinary Medicine, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China
| | - Junyi Luo
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Ting Chen
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Qingyan Jiang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Qianyun Xi
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, 510642, China.
| | - George E Liu
- Animal Genomics and Improvement Laboratory, USDA-ARS, BARC-East, Beltsville, MD, 20705, USA.
| | - Yongliang Zhang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, 510642, China.
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Shrivastava D, Jha A, Kabrambam R, Vishwakarma J, Mitra K, Ramachandran R, Habib S. Plasmodium falciparum ZIP1 Is a Zinc-Selective Transporter with Stage-Dependent Targeting to the Apicoplast and Plasma Membrane in Erythrocytic Parasites. ACS Infect Dis 2024; 10:155-169. [PMID: 38163252 DOI: 10.1021/acsinfecdis.3c00426] [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] [Indexed: 01/03/2024]
Abstract
Replication of the malarial parasite in human erythrocytes requires massive zinc fluxes, necessitating the action of zinc transporters across the parasite plasma and organellar membranes. Although genetic knockout studies have been conducted on a few "orphan" zinc transporters in Plasmodium spp., none of them have been functionally characterized. We used the recombinant Plasmodium falciparum Zrt-/Irt-like protein (PfZIP1) and specific antibodies generated against it to explore the subcellular localization, function, metal-ion selectivity, and response to cellular zinc levels. PfZIP1 expression was enhanced upon the depletion of cytosolic Zn2+. The protein transitioned from the processed to unprocessed form through blood stages, localizing to the apicoplast in trophozoites and to the parasite plasma membrane in schizonts and gametocytes, indicating stage-specific functional role. The PfZIP1 dimer mediated Zn2+ influx in proteoliposomes. It exhibited preferential binding to Zn2+ compared to Fe2+, with the selectivity for zinc being driven by a C-terminal histidine-rich region conserved only in primate-infecting Plasmodium species.
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Affiliation(s)
- Deepti Shrivastava
- Division of Biochemistry and Structural Biology, CSIR-Central Drug Research Institute, Lucknow 226031, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Akanksha Jha
- Division of Biochemistry and Structural Biology, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Rajlakshmi Kabrambam
- Division of Biochemistry and Structural Biology, CSIR-Central Drug Research Institute, Lucknow 226031, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Jyoti Vishwakarma
- Division of Biochemistry and Structural Biology, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Kalyan Mitra
- Sophisticated Analytical Instrument Facility and Research Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Ravishankar Ramachandran
- Division of Biochemistry and Structural Biology, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Saman Habib
- Division of Biochemistry and Structural Biology, CSIR-Central Drug Research Institute, Lucknow 226031, India
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Chen B, Yu P, Chan WN, Xie F, Zhang Y, Liang L, Leung KT, Lo KW, Yu J, Tse GMK, Kang W, To KF. Cellular zinc metabolism and zinc signaling: from biological functions to diseases and therapeutic targets. Signal Transduct Target Ther 2024; 9:6. [PMID: 38169461 PMCID: PMC10761908 DOI: 10.1038/s41392-023-01679-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 09/15/2023] [Accepted: 10/10/2023] [Indexed: 01/05/2024] Open
Abstract
Zinc metabolism at the cellular level is critical for many biological processes in the body. A key observation is the disruption of cellular homeostasis, often coinciding with disease progression. As an essential factor in maintaining cellular equilibrium, cellular zinc has been increasingly spotlighted in the context of disease development. Extensive research suggests zinc's involvement in promoting malignancy and invasion in cancer cells, despite its low tissue concentration. This has led to a growing body of literature investigating zinc's cellular metabolism, particularly the functions of zinc transporters and storage mechanisms during cancer progression. Zinc transportation is under the control of two major transporter families: SLC30 (ZnT) for the excretion of zinc and SLC39 (ZIP) for the zinc intake. Additionally, the storage of this essential element is predominantly mediated by metallothioneins (MTs). This review consolidates knowledge on the critical functions of cellular zinc signaling and underscores potential molecular pathways linking zinc metabolism to disease progression, with a special focus on cancer. We also compile a summary of clinical trials involving zinc ions. Given the main localization of zinc transporters at the cell membrane, the potential for targeted therapies, including small molecules and monoclonal antibodies, offers promising avenues for future exploration.
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Affiliation(s)
- Bonan Chen
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
- State Key Laboratory of Digestive Disease, Institute of Digestive Disease, The Chinese University of Hong Kong, Hong Kong, China
- CUHK-Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
| | - Peiyao Yu
- Department of Pathology, Nanfang Hospital and Basic Medical College, Southern Medical University, Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, China
| | - Wai Nok Chan
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
- State Key Laboratory of Digestive Disease, Institute of Digestive Disease, The Chinese University of Hong Kong, Hong Kong, China
- CUHK-Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
| | - Fuda Xie
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
- State Key Laboratory of Digestive Disease, Institute of Digestive Disease, The Chinese University of Hong Kong, Hong Kong, China
- CUHK-Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
| | - Yigan Zhang
- Institute of Biomedical Research, Taihe Hospital, Hubei University of Medicine, Shiyan, China
| | - Li Liang
- Department of Pathology, Nanfang Hospital and Basic Medical College, Southern Medical University, Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, China
| | - Kam Tong Leung
- Department of Pediatrics, The Chinese University of Hong Kong, Hong Kong, China
| | - Kwok Wai Lo
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
| | - Jun Yu
- State Key Laboratory of Digestive Disease, Institute of Digestive Disease, The Chinese University of Hong Kong, Hong Kong, China
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
| | - Gary M K Tse
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
| | - Wei Kang
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China.
- State Key Laboratory of Digestive Disease, Institute of Digestive Disease, The Chinese University of Hong Kong, Hong Kong, China.
- CUHK-Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China.
| | - Ka Fai To
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China.
- State Key Laboratory of Digestive Disease, Institute of Digestive Disease, The Chinese University of Hong Kong, Hong Kong, China.
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Sharma AK, Finney L, Vogt S, Vatamaniuk OK, Kim S. Cadmium alters whole animal ionome and promotes the re-distribution of iron in intestinal cells of Caenorhabditis elegans. Front Physiol 2023; 14:1258540. [PMID: 37822680 PMCID: PMC10562743 DOI: 10.3389/fphys.2023.1258540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 09/12/2023] [Indexed: 10/13/2023] Open
Abstract
The chronic exposure of humans to the toxic metal cadmium (Cd), either occupational or from food and air, causes various diseases, including neurodegenerative conditions, dysfunction of vital organs, and cancer. While the toxicology of Cd and its effect on the homeostasis of biologically relevant elements is increasingly recognized, the spatial distribution of Cd and other elements in Cd toxicity-caused diseases is still poorly understood. Here, we use Caenorhabditis elegans as a non-mammalian multicellular model system to determine the distribution of Cd at the tissue and cellular resolution and its effect on the internal levels and the distribution of biologically relevant elements. Using inductively coupled plasma-mass spectrophotometry (ICP-MS), we show that exposure of worms to Cd not only led to its internal accumulation but also significantly altered the C. elegans ionome. Specifically, Cd treatment was associated with increased levels of toxic elements such as arsenic (As) and rubidium (Rb) and a decreased accumulation of essential elements such as zinc (Zn), copper (Cu), manganese (Mn), calcium (Ca), cobalt (Co) and, depending on the Cd-concentration used in the assay, iron (Fe). We regarded these changes as an ionomic signature of Cd toxicity in C. elegans. We also show that supplementing nematode growth medium with Zn but not Cu, rescues Cd toxicity and that mutant worms lacking Zn transporters CDF-1 or SUR-7, or both are more sensitive to Cd toxicity. Finally, using synchrotron X-Ray fluorescence Microscopy (XRF), we showed that Cd significantly alters the spatial distribution of mineral elements. The effect of Cd on the distribution of Fe was particularly striking: while Fe was evenly distributed in intestinal cells of worms grown without Cd, in the presence of Cd, Fe, and Cd co-localized in punctum-like structures in the intestinal cells. Together, this study advances our understanding of the effect of Cd on the accumulation and distribution of biologically relevant elements. Considering that C. elegans possesses the principal tissues and cell types as humans, our data may have important implications for future therapeutic developments aiming to alleviate Cd-related pathologies in humans.
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Affiliation(s)
- Anuj Kumar Sharma
- Section of Plant Biology, School of Integrative Plant Science, Cornell University, Ithaca, NY, United States
| | - Lydia Finney
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, IL, United States
| | - Stefan Vogt
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, IL, United States
| | - Olena K. Vatamaniuk
- Section of Plant Biology, School of Integrative Plant Science, Cornell University, Ithaca, NY, United States
| | - Sungjin Kim
- Section of Plant Biology, School of Integrative Plant Science, Cornell University, Ithaca, NY, United States
- Department of Microbiology & Molecular Biology, Chungnam National University, Daejeon, Republic of Korea
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9
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Dorward AM, Stewart AJ, Pitt SJ. The role of Zn2+ in shaping intracellular Ca2+ dynamics in the heart. J Gen Physiol 2023; 155:e202213206. [PMID: 37326614 PMCID: PMC10276528 DOI: 10.1085/jgp.202213206] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 04/18/2023] [Accepted: 05/22/2023] [Indexed: 06/17/2023] Open
Abstract
Increasing evidence suggests that Zn2+ acts as a second messenger capable of transducing extracellular stimuli into intracellular signaling events. The importance of Zn2+ as a signaling molecule in cardiovascular functioning is gaining traction. In the heart, Zn2+ plays important roles in excitation-contraction (EC) coupling, excitation-transcription coupling, and cardiac ventricular morphogenesis. Zn2+ homeostasis in cardiac tissue is tightly regulated through the action of a combination of transporters, buffers, and sensors. Zn2+ mishandling is a common feature of various cardiovascular diseases. However, the precise mechanisms controlling the intracellular distribution of Zn2+ and its variations during normal cardiac function and during pathological conditions are not fully understood. In this review, we consider the major pathways by which the concentration of intracellular Zn2+ is regulated in the heart, the role of Zn2+ in EC coupling, and discuss how Zn2+ dyshomeostasis resulting from altered expression levels and efficacy of Zn2+ regulatory proteins are key drivers in the progression of cardiac dysfunction.
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Affiliation(s)
- Amy M. Dorward
- School of Medicine, University of St Andrews, St Andrews, UK
| | - Alan J. Stewart
- School of Medicine, University of St Andrews, St Andrews, UK
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10
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Pan D, Li Z, Lin X, Li L. Transcriptome sequencing and miRNA-mRNA network construction in exosome of macrophage M2 in stomach adenocarcinoma. World J Surg Oncol 2023; 21:193. [PMID: 37370118 DOI: 10.1186/s12957-023-03070-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 06/11/2023] [Indexed: 06/29/2023] Open
Abstract
BACKGROUND Stomach adenocarcinoma (STAD) is the most common histological type of gastric cancer (GC). Macrophages are an essential part of the tumor microenvironment. We attempted to search for potential molecular markers associated with macrophages, which might be helpful for STAD diagnosis and treatment. METHODS Firstly, exosome in macrophages was extracted for RNA sequencing to identify differentially expressed microRNAs (miRNAs) (DEmiRNAs). Then, DEmiRNAs and differentially expressed mRNAs (DEmRNAs) were screened in the Cancer Genome Atlas (TCGA) database. The miRNAs related to macrophage M2 polarization were obtained by intersecting the DEmiRNAs obtained from the sequencing data and TCGA data. Using the Pearson correlation coefficient method, the mRNAs significantly related to macrophage M2 were screened out, followed by construction of the macrophage M2-miRNA-mRNA network. Subsequently, real-time-polymerase chain reaction (RT-PCR) and online datasets were applied to validate the expression of DEmiRNAs and DEmRNAs. RESULTS A total of 6 DEmiRNAs were identified in RNA sequencing; 59 DEmiRNAs and 1838 DEmRNAs were identified in TCGA database. Among which, a common miRNA (hsa-miR-133a-3p) associated with the M2 polarization of macrophages was identified. Fifteen common mRNAs were obtained between DEmRNAs and mRNAs targeted by DEmiRNAs. Eventually, a core macrophage M2-1 down-regulated miRNA-7 and up-regulated mRNAs network was constructed, including hsa-miR-133a-3p, SLC39A1, TTYH3, HAVCR2, TPM3, XPO1, POU2F1, and MMP14. The expression of miRNA and mRNAs was in line with the validation results of RT-PCR and online datasets. CONCLUSION In this study, the screening of biomarkers in exosome of macrophage M2 may contribute to the prognosis of STAD patients.
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Affiliation(s)
- Dun Pan
- Department of Gastrointestinal Surgery, the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350005, Fujian Province, China
- Department of Gastrointestinal Surgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350212, China
- Fujian Research Institute of Abdominal Surgery, the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350005, China
| | - Zhipeng Li
- Department of Gastrointestinal Surgery, the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350005, Fujian Province, China
- Department of Gastrointestinal Surgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350212, China
- Fujian Research Institute of Abdominal Surgery, the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350005, China
| | - Xin Lin
- Department of Gastrointestinal Surgery, the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350005, Fujian Province, China
- Department of Gastrointestinal Surgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350212, China
- Fujian Research Institute of Abdominal Surgery, the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350005, China
| | - Liangqing Li
- Department of Gastrointestinal Surgery, the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350005, Fujian Province, China.
- Department of Gastrointestinal Surgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350212, China.
- Fujian Research Institute of Abdominal Surgery, the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350005, China.
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11
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Huang T, Chen S, Ding K, Zheng B, Lv W, Wang X, Zhong Y, Huang H, Zhang X, Ma S, Yang B, Wang X, Rong Z. SLC35E1 promotes keratinocyte proliferation in psoriasis by regulating zinc homeostasis. Cell Death Dis 2023; 14:354. [PMID: 37296095 PMCID: PMC10256760 DOI: 10.1038/s41419-023-05874-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 05/04/2023] [Accepted: 05/31/2023] [Indexed: 06/12/2023]
Abstract
Keratinocyte hyperproliferation is a key pathogenic factor in psoriasis. However, the mechanisms that regulate keratinocyte hyperproliferation in this condition remain unclear. Here, we found that SLC35E1 was highly expressed in keratinocytes of patients with psoriasis and that Slc35e1-/- mice displayed a less severe imiquimod (IMQ)-induced psoriasis-like phenotype than their wild-type siblings. In addition, SLC35E1 deficiency inhibited keratinocyte proliferation in both mice and cultured cells. On a molecular level, SLC35E1 was found to regulate zinc ion concentrations and subcellular localization, while zinc ion chelation reversed the IMQ-induced psoriatic phenotype in Slc35e1-/- mice. Meanwhile, epidermal zinc ion levels were decreased in patients with psoriasis and zinc ion supplementation alleviated the psoriatic phenotype in an IMQ-induced mouse model of psoriasis. Our results indicated that SLC35E1 can promote keratinocyte proliferation by regulating zinc ion homeostasis and zinc ion supplementation has potential as a therapy for psoriasis.
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Affiliation(s)
- Tao Huang
- Cancer Research Institute, School of Basic Medical Sciences, State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Key Laboratory of Organ Failure Research (Ministry of Education), Southern Medical University, Guangzhou, 510515, China
- Dermatology Hospital, Southern Medical University, Guangzhou, 510091, China
| | - Shijun Chen
- Cancer Research Institute, School of Basic Medical Sciences, State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Key Laboratory of Organ Failure Research (Ministry of Education), Southern Medical University, Guangzhou, 510515, China
| | - Ke Ding
- Cancer Research Institute, School of Basic Medical Sciences, State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Key Laboratory of Organ Failure Research (Ministry of Education), Southern Medical University, Guangzhou, 510515, China
- Dermatology Hospital, Southern Medical University, Guangzhou, 510091, China
| | - Baoqing Zheng
- Dermatology Hospital, Southern Medical University, Guangzhou, 510091, China
| | - Weiqi Lv
- Dermatology Hospital, Southern Medical University, Guangzhou, 510091, China
| | - Xiaobo Wang
- Dermatology Hospital, Southern Medical University, Guangzhou, 510091, China
| | - Yadan Zhong
- Dermatology Hospital, Southern Medical University, Guangzhou, 510091, China
| | - Hongxin Huang
- Dermatology Hospital, Southern Medical University, Guangzhou, 510091, China
| | - Xin Zhang
- Cancer Research Institute, School of Basic Medical Sciences, State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Key Laboratory of Organ Failure Research (Ministry of Education), Southern Medical University, Guangzhou, 510515, China
- Affiliated Dongguan Hospital, Southern Medical University, (Dongguan People's Hospital), Dongguan, 523058, China
| | - Shufeng Ma
- Cancer Research Institute, School of Basic Medical Sciences, State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Key Laboratory of Organ Failure Research (Ministry of Education), Southern Medical University, Guangzhou, 510515, China
- Department of Nephrology, Shenzhen Hospital, Southern Medical University, Shenzhen, 518110, China
| | - Bin Yang
- Dermatology Hospital, Southern Medical University, Guangzhou, 510091, China.
| | - Xiaohua Wang
- Dermatology Hospital, Southern Medical University, Guangzhou, 510091, China.
| | - Zhili Rong
- Cancer Research Institute, School of Basic Medical Sciences, State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Key Laboratory of Organ Failure Research (Ministry of Education), Southern Medical University, Guangzhou, 510515, China.
- Dermatology Hospital, Southern Medical University, Guangzhou, 510091, China.
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12
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Farr G, Jones S, Taylor KM. Methods to visualise zinc transporter proteins of the SLC39A family in cells. Methods Enzymol 2023; 687:67-85. [PMID: 37666639 DOI: 10.1016/bs.mie.2023.04.020] [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] [Indexed: 09/06/2023]
Abstract
Zinc is essential to many important biological processes and the SLC39A family of zinc transporters which help to control zinc levels in cells, are increasingly being implicated in disease states. In order to determine their exact roles in these processes, reliable methods for their successful production are now required. Unfortunately, extensive post-translational modification and temporally specific activation makes visualisation of ZIP family transporters difficult. As such, modifications of common molecular cell biology techniques are necessary to maximise success when studying these proteins. These include zinc stimulation and nocodazole synchronisation to enhance the activation of ZIP7 and ZIP6/ZIP10, respectively. Maximal ZIP6/ZIP10 retention can also be achieved through careful handling of loosely adhered mitotic fractions when harvesting cell cultures for lysis. Transfection can also be used to enhance ZIP visualisation, however consideration of transfection periods and inclusion of sodium butyrate are recommended to enhance transfection efficiency. When probing for ZIP family transporters, we recommend that epitope choice considers post-translational cleavage and phosphorylated protein isoforms. Finally, where expression of a particular ZIP transporter is manipulated, researchers should consider parallel evaluation of related ZIP transporter expression, to account for transporter compensation.
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Affiliation(s)
- Georgia Farr
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Redwood Building, King Edward VIIth Avenue, Cardiff, United Kingdom
| | - Samuel Jones
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Redwood Building, King Edward VIIth Avenue, Cardiff, United Kingdom
| | - Kathryn M Taylor
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Redwood Building, King Edward VIIth Avenue, Cardiff, United Kingdom.
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13
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Ma C, Gong C. Considerations in production of the prokaryotic ZIP family transporters for structural and functional studies. Methods Enzymol 2023; 687:1-30. [PMID: 37666628 DOI: 10.1016/bs.mie.2023.04.018] [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] [Indexed: 09/06/2023]
Abstract
Zinc ions play essential roles as components of enzymes and many other important biomolecules, and are associated with numerous diseases. The uptake of Zn2+ and other metal ions require a widely distributed transporter protein family called Zrt/Irt-like Proteins (ZIP family), the majority members of which tend to have eight transmembrane helices with both N- and C- termini located on the extracellular or periplasmic side. Their small sizes and dynamic conformations bring many difficulties in their production for structural studies either by crystallography or Cryo-EM. Here, we summarize the problems that may encounter at the various steps of processing the ZIP proteins from gene to structural and functional studies, and provide some solutions and examples from our and other labs for the cloning, expression, purification, stability screening, metal ion transport assays and structural studies of prokaryotic ZIP family transporters using Escherichia coli as a heterologous host.
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Affiliation(s)
- Cheng Ma
- Protein Facility, Zhejiang University School of Medicine, Hangzhou, P.R. China; The First Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, P.R. China.
| | - Caixia Gong
- The First Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, P.R. China; Zhejiang Provincial Key Laboratory for Diagnosis and Treatment of Aging and Physic-chemical Injury Diseases, Hangzhou, P.R. China.
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14
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Polesel M, Ingles-Prieto A, Christodoulaki E, Ferrada E, Doucerain C, Altermatt P, Knecht M, Kuhn M, Steck AL, Wilhelm M, Manolova V. Functional characterization of SLC39 family members ZIP5 and ZIP10 in overexpressing HEK293 cells reveals selective copper transport activity. Biometals 2023; 36:227-237. [PMID: 36454509 PMCID: PMC11196296 DOI: 10.1007/s10534-022-00474-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 11/20/2022] [Indexed: 12/04/2022]
Abstract
Zinc is the second most prevalent metal element present in living organisms, and control of its concentration is pivotal to physiology. The amount of zinc available to the cell cytoplasm is regulated by the activity of members of the SLC39 family, the ZIP proteins. Selectivity of ZIP transporters has been the focus of earlier studies which provided a biochemical and structural basis for the selectivity for zinc over other metals such as copper, iron, and manganese. However, several previous studies have shown how certain ZIP proteins exhibit higher selectivity for metal elements other than zinc. Sequence similarities suggest an evolutionary basis for the elemental selectivity within the ZIP family. Here, by engineering HEK293 cells to overexpress ZIP proteins, we have studied the selectivity of two phylogenetic clades of ZIP proteins, that is ZIP8/ZIP14 (previously known to be iron and manganese transporters) and ZIP5/ZIP10. By incubating ZIP over-expressing cells in presence of several divalent metals, we found that ZIP5 and ZIP10 are high affinity copper transporters with greater selectivity over other elements, revealing a novel substrate signature for the ZIP5/ZIP10 clade.
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Affiliation(s)
- Marcello Polesel
- Vifor (International) AG, Wagistrasse 27a, 8952, Schlieren, Switzerland.
| | - Alvaro Ingles-Prieto
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Lazarettgasse 14, 1090, Vienna, Austria
| | - Eirini Christodoulaki
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Lazarettgasse 14, 1090, Vienna, Austria
| | - Evandro Ferrada
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Lazarettgasse 14, 1090, Vienna, Austria
| | - Cédric Doucerain
- Vifor (International) AG, Wagistrasse 27a, 8952, Schlieren, Switzerland
| | - Patrick Altermatt
- Vifor (International) AG, Wagistrasse 27a, 8952, Schlieren, Switzerland
| | - Michelle Knecht
- Vifor (International) AG, Wagistrasse 27a, 8952, Schlieren, Switzerland
| | - Michael Kuhn
- Vifor (International) AG, Wagistrasse 27a, 8952, Schlieren, Switzerland
| | - Anna-Lena Steck
- Vifor (International) AG, Wagistrasse 27a, 8952, Schlieren, Switzerland
| | - Maria Wilhelm
- Vifor (International) AG, Wagistrasse 27a, 8952, Schlieren, Switzerland
| | - Vania Manolova
- Vifor (International) AG, Wagistrasse 27a, 8952, Schlieren, Switzerland
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15
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Taylor KM. The LIV-1 Subfamily of Zinc Transporters: From Origins to Present Day Discoveries. Int J Mol Sci 2023; 24:ijms24021255. [PMID: 36674777 PMCID: PMC9861476 DOI: 10.3390/ijms24021255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/03/2023] [Accepted: 01/06/2023] [Indexed: 01/11/2023] Open
Abstract
This review explains the origin of the LIV-1 family of zinc transporters, paying attention to how this family of nine human proteins was originally discovered. Structural and functional differences between these nine human LIV-1 family members and the five other ZIP transporters are examined. These differences are both related to aspects of the protein sequence, the conservation of important motifs and to the effect this may have on their overall function. The LIV-1 family are dependent on various post-translational modifications, such as phosphorylation and cleavage, which play an important role in their ability to transport zinc. These modifications and their implications are discussed in detail. Some of these proteins have been implicated in cancer which is examined. Furthermore, some additional areas of potential fruitful discovery are discussed and suggested as worthy of examination in the future.
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Affiliation(s)
- Kathryn M Taylor
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Redwood Building, King Edward VIIth Avenue, Cardiff CF10 3NB, UK
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16
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Yoon JS, Nam SY, Lee BJ, Lee HJ. Comparative study on the effects of micro- and nano-sized zinc oxide supplementation on zinc-deficient mice. J Vet Sci 2023; 24:e3. [PMID: 36560835 PMCID: PMC9899942 DOI: 10.4142/jvs.22201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 10/02/2022] [Accepted: 10/25/2022] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Zinc (Zn) is an essential cofactor for physiological homeostasis in the body. Zn oxide (ZnO), an inorganic compound that supplies Zn, exists in various sizes, and its bioavailability may vary depending on the size in vivo. However, comparative studies on the nutritional effects of micro-sized ZnO (M-ZnO) and nano-sized ZnO (N-ZnO) supplementation on Zn deficiency (ZnD) animal models have not been reported. OBJECTIVES This study investigated the nutritional bioavailability of N-ZnO and M-ZnO particles in dietary-induced ZnD mice. METHODS Animals were divided into six experimental groups: normal group, ZnD control group, and four ZnO treatment groups (Nano-Low, Nano-High, Micro-Low, and Micro-High). After ZnD induction, N-ZnO or M-ZnO was administered orally every day for 4 weeks. RESULTS ZnD-associated clinical signs almost disappeared 7 days after N-ZnO or M-ZnO administration. Serum Zn concentrations were higher in the Nano-High group than in the ZnD and M-ZnO groups on day 7 of ZnO treatment. In the liver and testis, Nano-Low and Nano-High groups showed significantly higher Zn concentrations than the other groups after 14-day treatment. ZnO supplementation increased Mt-1 mRNA expression in the liver and testis and Mt-2 mRNA expression in the liver. Based on hematoxylin-and-eosin staining results, N-ZnO supplementation alleviated histological damage induced by ZnD in the testis and liver. CONCLUSIONS This study suggested that N-ZnO can be utilized faster than M-ZnO for nutritional restoration at the early stage of ZnD condition and presented Mt-1 as an indicator of Zn status in the serum, liver, and testis.
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Affiliation(s)
- Ja-Seon Yoon
- College of Veterinary Medicine and Veterinary Medicine Center, Chungbuk National University, Cheongju 28644, Korea
| | - Sang Yoon Nam
- College of Veterinary Medicine and Veterinary Medicine Center, Chungbuk National University, Cheongju 28644, Korea
| | - Beom Jun Lee
- College of Veterinary Medicine and Veterinary Medicine Center, Chungbuk National University, Cheongju 28644, Korea.
| | - Hyun Jik Lee
- College of Veterinary Medicine and Veterinary Medicine Center, Chungbuk National University, Cheongju 28644, Korea.,Institute for Stem Cell & Regenerative Medicine (ISCRM), Chungbuk National University, Cheongju 28644, Korea.
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17
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Karunasinghe N. Zinc in Prostate Health and Disease: A Mini Review. Biomedicines 2022; 10:biomedicines10123206. [PMID: 36551962 PMCID: PMC9775643 DOI: 10.3390/biomedicines10123206] [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: 11/03/2022] [Revised: 12/03/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022] Open
Abstract
Introduction-With the high global prevalence of prostate cancer and associated mortalities, it is important to enhance current clinical practices for better prostate cancer outcomes. The current review is towards understanding the value of Zn towards this mission. Method-General information on Zn in biology and multiple aspects of Zn involvement in prostate health and disease were referred to in PubMed. Results-The most influential feature of Zn towards prostate health is its ability to retain sufficient citrate levels for a healthy prostate. Zn deficiencies were recorded in serum, hair, and prostate tissue of men with prostate cancer compared to non-cancer controls. Zn gut absorption, albumin binding, and storage compete with various factors. There are multiple associations of Zn cellular influx and efflux transporters, Zn finger proteins, matrix metalloproteinases, and Zn signaling with prostate cancer outcomes. Such Zn marker variations associated with prostate cancer recorded from biological matrices may improve algorithms for prostate cancer screening, prognosis, and management when coupled with standard clinical practices. Discussion-The influence of Zn in prostatic health and disease is multidimensional, therefore more personalized Zn requirements may be beneficial. Several opportunities exist to utilize and improve understanding of Zn associations with prostate health and disease.
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Affiliation(s)
- Nishi Karunasinghe
- Auckland Cancer Society Research Centre, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
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18
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The Significance of Zinc in Patients with Chronic Liver Disease. Nutrients 2022; 14:nu14224855. [PMID: 36432541 PMCID: PMC9692841 DOI: 10.3390/nu14224855] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 11/10/2022] [Accepted: 11/13/2022] [Indexed: 11/18/2022] Open
Abstract
Zinc is an essential trace element for the maintenance of life because it acts as a center of activity or cofactor for hundreds of enzymes. Zinc deficiency causes a variety of symptoms, including anemia, dermatitis, stomatitis, alopecia, bedsores, decreased appetite, impaired growth, gonadal dysfunction, susceptibility to infection, and taste disorders, etc. In March 2017, zinc acetate hydrate, which had been approved for Wilson disease in Japan, received an additional indication for hypozincemia. Hypozincemia is frequently observed in patients with chronic liver disease (CLD), especially cirrhosis, and it has recently been shown that hypozincemia is closely related to the development of liver fibrosis and increased risk of liver carcinogenesis, in addition to the appearance of various subjective symptoms. Moreover, hypozincemia in CLD may be associated with sarcopenia (i.e., decrease in muscle strength and muscle mass) and frailty (i.e., vulnerability), which receive much attention these days. It is assumed that treatment with zinc acetate hydrate will become widespread in patients with CLD. Zinc acetate hydrate may also have potential for improving sarcopenia in patients with CLD. This review primarily outlines the significance of zinc in patients with CLD.
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19
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Upregulated Solute Carrier SLC39A1 Promotes Gastric Cancer Proliferation and Indicates Unfavorable Prognosis. Genet Res (Camb) 2022; 2022:1256021. [PMID: 36407082 PMCID: PMC9652071 DOI: 10.1155/2022/1256021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 08/19/2022] [Accepted: 08/28/2022] [Indexed: 11/06/2022] Open
Abstract
Backgrounds Solute carrier 39A1 (SLC39A1) is an indirect zinc transporter which showed diverse tumor-related functions in different malignancies. Here, we aimed to investigate its expression and role in gastric adenocarcinoma. Methods A retrospective gastric adenocarcinoma cohort (n = 154) was collected from our hospital to test their tissue expression of SLC39A1 through immunohistochemical staining method. After SLC39A1 overexpression or knockdown, proliferation and invasion assays were conducted for proliferation and invasion estimation, respectively. Xenograft in nude mice was used as the in vivo strategy to validate in vitro findings. Results Compared with adjacent stomach tissues, gastric adenocarcinoma tissues showed significantly higher SLC39A1 on both mRNA and protein levels. Higher SLC39A1 was observed in patients with larger tumor size (P=0.003) and advanced tumor stages (P < 0.001). Univariate (P=0.001) and multivariate analyses (P=0.035) confirmed the independent prognostic significance of SLC39A1 on gastric adenocarcinoma outcomes. The median survival time was 22.0 months in patients with high-SLC39A1 expression, while up to 57.0 months in those with low-SLC39A1 (P=0.001). In vitro and in vivo assays demonstrated that overexpressing SLC39A1 could promote gastric cancer growth and invasion, while silencing SLC39A1 led to opposite effects. Conclusions Aberrant high-SLC39A1 expression can serve as an independent unfavorable prognostic factor for gastric adenocarcinoma. High SLC39A1 is critical for a more aggressive tumor phenotype by promoting cell proliferation and invasion. Therefore, targeting SLC39A1 may provide novel therapeutic insights.
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Saravanan R, Balasubramanian V, Swaroop Balamurugan SS, Ezhil I, Afnaan Z, John J, Sundaram S, Gouthaman S, Pakala SB, Rayala SK, Venkatraman G. Zinc transporter LIV1: A promising cell surface target for triple negative breast cancer. J Cell Physiol 2022; 237:4132-4156. [PMID: 36181695 DOI: 10.1002/jcp.30880] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 08/22/2022] [Accepted: 08/30/2022] [Indexed: 11/05/2022]
Abstract
Breast cancer is one of the leading causes contributing to the global cancer burden. The triple negative breast cancer (TNBC) molecular subtype accounts for the most aggressive type. Despite progression in therapeutic options and prognosis in breast cancer treatment options, there remains a high rate of distant relapse. With advancements in understanding the role of zinc and zinc carriers in the prognosis and treatment of the disease, the scope of precision treatment/targeted therapy has been expanded. Zinc levels and zinc transporters play a vital role in maintaining cellular homeostasis, tumor surveillance, apoptosis, and immune function. This review focuses on the zinc transporter, LIV1, as an essential target for breast cancer prognosis and emerging treatment options. Previous studies give an insight into the role of LIV1 in fulfilling the most important hallmarks of cancer such as apoptosis, metastasis, invasion, and evading the immune system. Normal tissue expression of LIV1 is limited. Higher expression of LIV1 has been linked to Epithelial-Mesenchymal Transition, histological grade of cancer, and early node metastasis. LIV1 was found to be one of the attractive targets in the therapeutic hunt for TNBCs. TNBCs are an immunogenic breast cancer subtype. As zinc transporters are known to serve as the metabolic gatekeepers of immune cells, this review bridges tumor infiltrating lymphocytes, TNBC and LIV1. In addition, the suitability of LIV1 as an antibody-drug conjugate (Seattle genetics [SGN]-LIV1A) target in TNBC, represents a promising strategy for patients. Early clinical trial results reveal that this novel agent reduces tumor burden by inducing mitotic arrest, immunomodulation, and immunogenic cell death, warranting further investigation of SGN-LIV1A in combination with immuno-oncology agents. Priming the patient's immune response in combination with SGN-LIV1A could eventually change the landscape for the TNBC patient population.
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Affiliation(s)
- Roshni Saravanan
- Department of Human Genetics, Sri Ramachandra Faculty of Biomedical Sciences and Technology, Sri Ramachandra Institute of Higher Education and Research, Chennai, Tamil Nadu, India
| | - Vaishnavi Balasubramanian
- Department of Human Genetics, Sri Ramachandra Faculty of Biomedical Sciences and Technology, Sri Ramachandra Institute of Higher Education and Research, Chennai, Tamil Nadu, India
| | - Srikanth Swamy Swaroop Balamurugan
- Department of Human Genetics, Sri Ramachandra Faculty of Biomedical Sciences and Technology, Sri Ramachandra Institute of Higher Education and Research, Chennai, Tamil Nadu, India
| | - Inemai Ezhil
- Department of Biotechnology, Indian Institute of Technology-Madras, Chennai, Tamil Nadu, India
| | - Zeba Afnaan
- Department of Human Genetics, Sri Ramachandra Faculty of Biomedical Sciences and Technology, Sri Ramachandra Institute of Higher Education and Research, Chennai, Tamil Nadu, India
| | - Jisha John
- Department of Human Genetics, Sri Ramachandra Faculty of Biomedical Sciences and Technology, Sri Ramachandra Institute of Higher Education and Research, Chennai, Tamil Nadu, India
| | - Sandhya Sundaram
- Department of Pathology, Sri Ramachandra Medical College and Research Institute, Sri Ramachandra Institute of Higher Education and Research, Chennai, Tamil Nadu, India
| | - Shanmugasundaram Gouthaman
- Department of Surgical Oncology, Sri Ramachandra Medical College and Research Institute, Sri Ramachandra Institute of Higher Education and Research, Chennai, Tamil Nadu, India
| | - Suresh B Pakala
- Department of Biochemistry, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, India
| | - Suresh Kumar Rayala
- Department of Biotechnology, Indian Institute of Technology-Madras, Chennai, Tamil Nadu, India
| | - Ganesh Venkatraman
- Department of Human Genetics, Sri Ramachandra Faculty of Biomedical Sciences and Technology, Sri Ramachandra Institute of Higher Education and Research, Chennai, Tamil Nadu, India
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21
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Resurreccion EP, Fong KW. The Integration of Metabolomics with Other Omics: Insights into Understanding Prostate Cancer. Metabolites 2022; 12:metabo12060488. [PMID: 35736421 PMCID: PMC9230859 DOI: 10.3390/metabo12060488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 05/21/2022] [Accepted: 05/24/2022] [Indexed: 02/06/2023] Open
Abstract
Our understanding of prostate cancer (PCa) has shifted from solely caused by a few genetic aberrations to a combination of complex biochemical dysregulations with the prostate metabolome at its core. The role of metabolomics in analyzing the pathophysiology of PCa is indispensable. However, to fully elucidate real-time complex dysregulation in prostate cells, an integrated approach based on metabolomics and other omics is warranted. Individually, genomics, transcriptomics, and proteomics are robust, but they are not enough to achieve a holistic view of PCa tumorigenesis. This review is the first of its kind to focus solely on the integration of metabolomics with multi-omic platforms in PCa research, including a detailed emphasis on the metabolomic profile of PCa. The authors intend to provide researchers in the field with a comprehensive knowledge base in PCa metabolomics and offer perspectives on overcoming limitations of the tool to guide future point-of-care applications.
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Affiliation(s)
- Eleazer P. Resurreccion
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY 40506, USA;
| | - Ka-wing Fong
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY 40506, USA;
- Markey Cancer Center, University of Kentucky, Lexington, KY 40506, USA
- Correspondence: ; Tel.: +1-859-562-3455
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22
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Wan Z, Wang X. Role of SLC39A6 in the development and progression of liver cancer. Oncol Lett 2022; 23:77. [PMID: 35111246 PMCID: PMC8771636 DOI: 10.3892/ol.2022.13197] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 12/21/2021] [Indexed: 12/11/2022] Open
Abstract
Liver cancer is one of the most common malignant solid tumor types worldwide. The solute carrier (SLC)39A family is a main member of the SLC group of membrane transport proteins, which transfer zinc to the cytoplasm when cells are depleted of zinc; thus, it may provide a novel therapeutic target for human cancer. However, the prognostic value of SLC39A genes in patients with liver cancer has remained elusive. Therefore, the present study aimed to explore whether SLC39A family genes are associated with the survival rate of patients with liver cancer and to investigate the role of key genes of the SLC39A family in liver cancer. The mRNA expression of the SLC39A family in liver cancer was obtained from the UALCAN database. Survival curve analysis was performed to investigate the prognostic value of SLC39A family genes in the overall survival of patients with liver cancer. In addition to the bioinformatics analysis, SLC39A6 was knocked down in HepG2 and Hep3B cells to examine the effect on the proliferation, migration and invasion of liver cancer cells. The results suggested that SLC39A6 was significantly upregulated in liver cancer tissues compared with normal liver tissues. High expression of SLC39A6 was significantly associated with poor overall survival of patients with liver cancer. Furthermore, knockdown of SLC39A6 inhibited the proliferation, migration and invasion of liver cancer cells in vitro and in vivo. Collectively, the results of the present study suggested that SLC39A6 may be a promising prognostic biomarker for liver cancer and is associated with the proliferation, migration and invasion of liver cancer.
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Affiliation(s)
- Zhen Wan
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Xuzhen Wang
- Department of Critical Care Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
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23
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Prasad RR, Raina K, Mishra N, Tomar MS, Kumar R, Palmer AE, Maroni P, Agarwal R. Stage-specific differential expression of zinc transporter SLC30A and SLC39A family proteins during prostate tumorigenesis. Mol Carcinog 2022; 61:454-471. [PMID: 35049094 DOI: 10.1002/mc.23382] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 11/29/2021] [Indexed: 11/10/2022]
Abstract
Prostate cancer (PCa) initiation and progression uniquely modify the prostate milieu to aid unrestrained cell proliferation. One salient modification is the loss of the ability of prostate epithelial cells to accumulate high concentrations of zinc; however, molecular alterations associated with loss of zinc accumulating capability in malignant prostate cells remain poorly understood. Herein, we assessed the stage-specific expression of zinc transporters (ZNTs) belonging to the ZNT (SLC30A) and Zrt- and Irt-like protein (ZIP) (SLC39A) solute-carrier family in the prostate tissues of different genetically engineered mouse models (GEMM) of PCa (TMPRSS2-ERG.Ptenflox/flox , Hi-Myc+/ - , and transgenic adenocarcinoma of mouse prostate), their age-matched wild-type controls, and 104 prostate core biopsies from human patients with different pathological lesions. Employing immunohistochemistry, differences in the levels of protein expression and spatial distribution of ZNT were evaluated as a function of the tumor stage. Results indicated that the expression of zinc importers (ZIP1, ZIP2, and ZIP3), which function to sequester zinc from circulation and prostatic fluid, was low to negligible in the membranes of the malignant prostate cells in both GEMM and human prostate tissues. Regarding zinc exporters (ZNT1, ZNT2, ZNT9, and ZNT10) that export excess zinc into the extracellular spaces or intracellular organelles, their expression was low in normal prostate glands of mice and humans; however, it was significantly upregulated in prostate adenocarcinoma lesions in GEMM and PCa patients. Together, our findings provide new insights into altered expression of ZNTs during the progression of PCa and indicate that changes in zinc homeostasis could possibly be an early-initiation event during prostate tumorigenesis and a likely prevention/intervention target.
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Affiliation(s)
- Ram R Prasad
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Komal Raina
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA.,Department of Pharmaceutical Sciences, South Dakota State University, Brookings, South Dakota, USA
| | - Neha Mishra
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Munendra S Tomar
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Robin Kumar
- Department of Pharmaceutical Sciences, South Dakota State University, Brookings, South Dakota, USA
| | - Amy E Palmer
- Department of Biochemistry, BioFrontiers Institute, University of Colorado, Boulder, Colorado, USA
| | - Paul Maroni
- Department of Surgery, Division of Urology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Rajesh Agarwal
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA.,University of Colorado Cancer Center, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
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24
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Puccio T, Kunka KS, An SS, Kitten T. Contribution of a ZIP-family protein to manganese uptake and infective endocarditis virulence in Streptococcus sanguinis. Mol Microbiol 2021; 117:353-374. [PMID: 34855265 PMCID: PMC8844249 DOI: 10.1111/mmi.14853] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 11/24/2021] [Accepted: 11/30/2021] [Indexed: 01/18/2023]
Abstract
Streptococcus sanguinis is an important cause of infective endocarditis. In strain SK36, the ABC‐family manganese transporter, SsaACB, is essential for virulence. We have now identified a ZIP‐family protein, TmpA, as a secondary manganese transporter. A tmpA mutant had no phenotype, but a ΔssaACB ΔtmpA mutant was more attenuated for serum growth and for virulence in a rabbit model than its ΔssaACB parent. The growth of both mutants was restored by supplemental manganese, but the ΔssaACB ΔtmpA mutant required twenty‐fold more and accumulated less. Although ZIP‐family proteins are known for zinc and iron transport, TmpA‐mediated transport of either metal was minimal. While ssaACB appears ubiquitous in St. sanguinis, tmpA was present in a majority of strains and a mntH gene encoding an NRAMP‐family transporter was identified in relatively few, including VMC66. As in SK36, deletion of ssaACB greatly diminished VMC66 endocarditis virulence and serum growth, and deletion of tmpA from this mutant diminished virulence further. Virulence was not significantly altered by deletion of mntH from either VMC66 or its ΔssaACB mutant. This and the accompanying paper together suggest that SsaACB is of primary importance for endocarditis virulence while secondary transporters TmpA and MntH contribute to growth under differing conditions.
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Affiliation(s)
- Tanya Puccio
- Philips Institute for Oral Health Research, Virginia Commonwealth University School of Dentistry, Richmond, Virginia, USA
| | - Karina S Kunka
- Philips Institute for Oral Health Research, Virginia Commonwealth University School of Dentistry, Richmond, Virginia, USA
| | - Seon-Sook An
- Philips Institute for Oral Health Research, Virginia Commonwealth University School of Dentistry, Richmond, Virginia, USA
| | - Todd Kitten
- Philips Institute for Oral Health Research, Virginia Commonwealth University School of Dentistry, Richmond, Virginia, USA
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25
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Brun S, Bestion E, Raymond E, Bassissi F, Jilkova ZM, Mezouar S, Rachid M, Novello M, Tracz J, Hamaï A, Lalmanach G, Vanderlynden L, Legouffe R, Stauber J, Schubert T, Plach MG, Courcambeck J, Drouot C, Jacquemot G, Serdjebi C, Roth G, Baudoin JP, Ansaldi C, Decaens T, Halfon P. GNS561, a clinical-stage PPT1 inhibitor, is efficient against hepatocellular carcinoma via modulation of lysosomal functions. Autophagy 2021; 18:678-694. [PMID: 34740311 PMCID: PMC9037544 DOI: 10.1080/15548627.2021.1988357] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Hepatocellular carcinoma is the most frequent primary liver cancer. Macroautophagy/autophagy inhibitors have been extensively studied in cancer but, to date, none has reached efficacy in clinical trials. In this study, we demonstrated that GNS561, a new autophagy inhibitor, whose anticancer activity was previously linked to lysosomal cell death, displayed high liver tropism and potent antitumor activity against a panel of human cancer cell lines and in two hepatocellular carcinoma in vivo models. We showed that due to its lysosomotropic properties, GNS561 could reach and specifically inhibited its enzyme target, PPT1 (palmitoyl-protein thioesterase 1), resulting in lysosomal unbound Zn2+ accumulation, impairment of cathepsin activity, blockage of autophagic flux, altered location of MTOR (mechanistic target of rapamycin kinase), lysosomal membrane permeabilization, caspase activation and cell death. Accordingly, GNS561, for which a global phase 1b clinical trial in liver cancers was just successfully achieved, represents a promising new drug candidate and a hopeful therapeutic strategy in cancer treatment. Abbreviations: ANXA5:annexin A5; ATCC: American type culture collection; BafA1: bafilomycin A1; BSA: bovine serum albumin; CASP3: caspase 3; CASP7: caspase 7; CASP8: caspase 8; CCND1: cyclin D1; CTSB: cathepsin B; CTSD: cathepsin D; CTSL: cathepsin L; CQ: chloroquine; iCCA: intrahepatic cholangiocarcinoma; DEN: diethylnitrosamine; DMEM: Dulbelcco’s modified Eagle medium; FBS: fetal bovine serum; FITC: fluorescein isothiocyanate; GAPDH: glyceraldehyde-3-phosphate dehydrogenase; HCC: hepatocellular carcinoma; HCQ: hydroxychloroquine; HDSF: hexadecylsulfonylfluoride; IC50: mean half-maximal inhibitory concentration; LAMP: lysosomal associated membrane protein; LC3-II: phosphatidylethanolamine-conjugated form of MAP1LC3; LMP: lysosomal membrane permeabilization; MALDI: matrix assisted laser desorption ionization; MAP1LC3/LC3: microtubule associated protein 1 light chain 3; MKI67: marker of proliferation Ki-67; MTOR: mechanistic target of rapamycin kinase; MRI: magnetic resonance imaging; NH4Cl: ammonium chloride; NtBuHA: N-tert-butylhydroxylamine; PARP: poly(ADP-ribose) polymerase; PBS: phosphate-buffered saline; PPT1: palmitoyl-protein thioesterase 1; SD: standard deviation; SEM: standard error mean; vs, versus; Zn2+: zinc ion; Z-Phe: Z-Phe-Tyt(tBu)-diazomethylketone; Z-VAD-FMK: carbobenzoxy-valyl-alanyl-aspartyl-[O-methyl]- fluoromethylketone.
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Affiliation(s)
| | - Eloïne Bestion
- Genoscience Pharma, Marseille, France.,Aix-Marseille Univ, MEPHI, APHM, IRD, IHU Méditerranée Infection, Marseille, France
| | - Eric Raymond
- Genoscience Pharma, Marseille, France.,Medical Oncology, Paris Saint-Joseph Hospital, Paris, France
| | | | - Zuzana Macek Jilkova
- Institute for Advanced Biosciences, Research Center UGA/Inserm U 1209/CNRS 5309, La Tronche, France.,University of Grenoble Alpes, Faculté De Médecine, France.,Clinique Universitaire d'Hépato-gastroentérologie, Pôle Digidune, Chu Grenoble, France
| | | | | | | | | | - Ahmed Hamaï
- Institut Necker-Enfants Malades, Inserm U1151-CNRS UMR, Paris, France.,University of Paris Descartes-Sorbonne Paris Cité, Paris, France
| | - Gilles Lalmanach
- Inserm, UMR1100, Centre d'Etude Des Pathologies Respiratoires, Equipe "Mécanismes Protéolytiques Dans l'Inflammation", Tours, France.,University of Tours, Tours, France
| | - Lise Vanderlynden
- Inserm, UMR1100, Centre d'Etude Des Pathologies Respiratoires, Equipe "Mécanismes Protéolytiques Dans l'Inflammation", Tours, France.,University of Tours, Tours, France
| | | | | | | | | | | | | | | | | | - Gael Roth
- Institute for Advanced Biosciences, Research Center UGA/Inserm U 1209/CNRS 5309, La Tronche, France.,University of Grenoble Alpes, Faculté De Médecine, France.,Clinique Universitaire d'Hépato-gastroentérologie, Pôle Digidune, Chu Grenoble, France
| | - Jean-Pierre Baudoin
- Aix-Marseille Univ, MEPHI, APHM, IRD, IHU Méditerranée Infection, Marseille, France
| | | | - Thomas Decaens
- Institute for Advanced Biosciences, Research Center UGA/Inserm U 1209/CNRS 5309, La Tronche, France.,University of Grenoble Alpes, Faculté De Médecine, France.,Clinique Universitaire d'Hépato-gastroentérologie, Pôle Digidune, Chu Grenoble, France
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26
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Davis DN, Strong MD, Chambers E, Hart MD, Bettaieb A, Clarke SL, Smith BJ, Stoecker BJ, Lucas EA, Lin D, Chowanadisai W. A role for zinc transporter gene SLC39A12 in the nervous system and beyond. Gene 2021; 799:145824. [PMID: 34252531 DOI: 10.1016/j.gene.2021.145824] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 04/28/2021] [Accepted: 05/19/2021] [Indexed: 12/21/2022]
Abstract
The SLC39A12 gene encodes the zinc transporter protein ZIP12, which is expressed across many tissues and is highly abundant in the vertebrate nervous system. As a zinc transporter, ZIP12 functions to transport zinc across cellular membranes, including cellular zinc influx across the plasma membrane. Genome-wide association and exome sequencing studies have shown that brain susceptibility-weighted magnetic resonance imaging (MRI) intensity is associated with ZIP12 polymorphisms and rare mutations. ZIP12 is required for neural tube closure and embryonic development in Xenopus tropicalis. Frog embryos depleted of ZIP12 by antisense morpholinos develop an anterior neural tube defect and lack viability. ZIP12 is also necessary for neurite outgrowth and mitochondrial function in mouse neural cells. ZIP12 mRNA is increased in brain regions of schizophrenic patients. Outside of the nervous system, hypoxia induces ZIP12 expression in multiple mammalian species, including humans, which leads to endothelial and smooth muscle thickening in the lung and contributes towards pulmonary hypertension. Other studies have associated ZIP12 with other diseases such as cancer. Given that ZIP12 is highly expressed in the brain and that susceptibility-weighted MRI is associated with brain metal content, ZIP12 may affect neurological diseases and psychiatric illnesses such as Parkinson's disease, Alzheimer's disease, and schizophrenia. Furthermore, the induction of ZIP12 and resultant zinc uptake under pathophysiological conditions may be a critical component of disease pathology, such as in pulmonary hypertension. Drug compounds that bind metals like zinc may be able to treat diseases associated with impaired zinc homeostasis and altered ZIP12 function.
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Affiliation(s)
- Danielle N Davis
- Oklahoma State University, Department of Nutritional Sciences, Stillwater, OK 74078, USA
| | - Morgan D Strong
- Oklahoma State University, Department of Nutritional Sciences, Stillwater, OK 74078, USA
| | - Emily Chambers
- Oklahoma State University, Department of Nutritional Sciences, Stillwater, OK 74078, USA
| | - Matthew D Hart
- Oklahoma State University, Department of Nutritional Sciences, Stillwater, OK 74078, USA
| | - Ahmed Bettaieb
- University of Tennessee, Department of Nutrition, Knoxville, TN 37996, USA
| | - Stephen L Clarke
- Oklahoma State University, Department of Nutritional Sciences, Stillwater, OK 74078, USA
| | - Brenda J Smith
- Oklahoma State University, Department of Nutritional Sciences, Stillwater, OK 74078, USA
| | - Barbara J Stoecker
- Oklahoma State University, Department of Nutritional Sciences, Stillwater, OK 74078, USA
| | - Edralin A Lucas
- Oklahoma State University, Department of Nutritional Sciences, Stillwater, OK 74078, USA
| | - Dingbo Lin
- Oklahoma State University, Department of Nutritional Sciences, Stillwater, OK 74078, USA
| | - Winyoo Chowanadisai
- Oklahoma State University, Department of Nutritional Sciences, Stillwater, OK 74078, USA.
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27
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Ma C, Gong C. Expression, Purification and Characterization of a ZIP Family Transporter from Desulfovibrio vulgaris. Protein J 2021; 40:776-785. [PMID: 34101092 DOI: 10.1007/s10930-021-10008-7] [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] [Accepted: 06/03/2021] [Indexed: 10/21/2022]
Abstract
The ZIP family transport zinc ions from the extracellular medium across the plasma membrane or from the intracellular compartments across endomembranes, which play fundamental roles in metal homeostasis and are broadly involved in physiological and pathological processes. Desulfovibrio is the predominant sulphate-reducing bacteria in human colonic microbiota, but also a potential choice for metal bioremediation. while, there are no published studies describing the zinc transporters from Desulfovibrio up to now. In this study, we obtained for the first time a heterologously expressed ZIP homolog from Desulfovibrio vulgaris, termed dvZip. The purified dvZip was reconstituted into proteoliposomes, and confirmed its zinc transport ability in vitro. By combining topology prediction, homology modeling and phylogenetic approaches, we also noticed that dvZip belongs to the GufA and probably have 8 transmembrane α-helical segments (TM 1-8) in which both termini are located on the extracellular, with TM2, 4, 5 and 7 create an inner bundle. We believe that purification and characterization of zinc (probably also cadmium) transporters from Desulfovibrio vulgaris such as dvZip could shed light on understanding of metal homeostasis of Desulfovibrio and provided protein products for future detailed function and structural studies.
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Affiliation(s)
- Cheng Ma
- Protein Facility, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, 310058, China.
| | - Caixia Gong
- Department of Geriatrics, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310058, China
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28
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Zhu B, Huo R, Zhi Q, Zhan M, Chen X, Hua ZC. Increased expression of zinc transporter ZIP4, ZIP11, ZnT1, and ZnT6 predicts poor prognosis in pancreatic cancer. J Trace Elem Med Biol 2021; 65:126734. [PMID: 33631610 DOI: 10.1016/j.jtemb.2021.126734] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 02/11/2021] [Accepted: 02/15/2021] [Indexed: 01/19/2023]
Abstract
INTRODUCTION Zinc homeostasis is regulated by SLC39A/ZIP, SLC30A/ZnT, and metallothionein (MT) families in human cells. Zinc dyshomeostasis may affect or be affected by the abnormal behavior of cancer cells. Although decreased serum zinc levels are observed in patients with pancreatic adenocarcinoma (PAAD), limited information is available regarding the expression pattern and prognostic roles of zinc homeostasis-related genes in PAAD. OBJECTIVES The primary objective of this study was to explore the expression pattern and prognostic roles of zinc homeostasis-related genes in PAAD. METHODS The expression pattern of 35 known zinc homeostasis-related genes in PAAD was systemically explored based on RNA-sequencing data from the Cancer Genome Atlas (TCGA) and the Genotype-Tissue Expression (GTEx) projects. The association between the expression levels of zinc homeostasis-related genes and survival of PAAD patients was evaluated using the Kaplan-Meier method and the log-rank test. Expressional correlation between zinc homeostasis-related genes with potential prognostic value in PAAD and normal pancreatic controls was evaluated using Pearson's correlation analysis. Functional enrichment analyses were performed to elucidate possible mechanisms for the potential prognostic and therapeutic roles of these zinc homeostasis-related genes in PAAD. Effects of ZIP11, ZnT1, or ZnT6 knockdown on the proliferation and the migration of Capan-1 pancreatic cancer cells were assessed by the CCK-8 assay and the wound healing assay respectively. RESULTS We demonstrated that the expression levels of ZIP1, ZIP3, ZIP4, ZIP6, ZIP7, ZIP9, ZIP10, ZIP11, ZIP13, ZnT1, ZnT5, ZnT6, ZnT7, and ZnT9 were increased, whereas the expression levels of ZIP5, ZIP14, ZnT2, MT1 G, MT1H, and MT1X were decreased in PAAD tumors compared with normal pancreatic controls. Among these differentially-expressed genes related to zinc homeostasis, higher expression of ZIP4, ZIP11, ZnT1 or ZnT6 predicted poorer prognosis with the possible involvement of several cancer-related processes and pathways in PAAD patients. We further demonstrated that knockdown of ZIP11 attenuated Capan-1 cell proliferation with decreased activation of ERK1/2 pathway; knockdown of ZnT1 attenuated Capan-1 cell proliferation with decreased activation of ERK1/2, p38 MAPK, NF-kB, and mTOR pathways; knockdown of ZnT6 attenuated Capan-1 cell proliferation with decreased activation of ERK1/2, p38 MAPK, and NF-kB pathways. CONCLUSIONS Higher expression of the zinc transporter ZIP4, ZIP11, ZnT1 or ZnT6 predicted poorer prognosis in patients with PAAD. These findings provide new clues for understanding the complex relationship between zinc homeostasis and pancreatic cancer.
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Affiliation(s)
- Bo Zhu
- School of Biopharmacy, China Pharmaceutical University, Nanjing 211198, PR China; School of Medicine and Holistic Integrative Medicine and Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210023, PR China; School of Life Sciences, Nanjing University, Nanjing 210023, PR China.
| | - Ruwei Huo
- School of Medicine and Holistic Integrative Medicine and Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210023, PR China
| | - Qi Zhi
- School of Medicine and Holistic Integrative Medicine and Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210023, PR China
| | - Mingjie Zhan
- School of Biopharmacy, China Pharmaceutical University, Nanjing 211198, PR China
| | - Xiao Chen
- School of Medicine and Holistic Integrative Medicine and Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210023, PR China; School of Life Sciences, Nanjing University, Nanjing 210023, PR China
| | - Zi-Chun Hua
- School of Biopharmacy, China Pharmaceutical University, Nanjing 211198, PR China; School of Life Sciences, Nanjing University, Nanjing 210023, PR China; Changzhou High-Tech Research Institute of Nanjing University and Jiangsu Target Pharma Laboratories Inc., Changzhou 213164, PR China.
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29
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Petrus E, Saar G, Daoust A, Dodd S, Koretsky AP. A hierarchy of manganese competition and entry in organotypic hippocampal slice cultures. NMR IN BIOMEDICINE 2021; 34:e4476. [PMID: 33538073 PMCID: PMC7988546 DOI: 10.1002/nbm.4476] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 01/02/2021] [Indexed: 05/15/2023]
Abstract
Contrast agents improve clinical and basic research MRI. The manganese ion (Mn2+ ) is an essential, endogenous metal found in cells and it enhances MRI contrast because of its paramagnetic properties. Manganese-enhanced MRI (MEMRI) has been widely used to image healthy and diseased states of the body and the brain in a variety of animal models. There has also been some work in translating the useful properties of MEMRI to humans. Mn2+ accumulates in brain regions with high neural activity and enters cells via voltage-dependent channels that flux calcium (Ca2+ ). In addition, metal transporters for zinc (Zn2+ ) and iron (Fe2+ ) can also transport Mn2+ . There is also transfer through channels specific for Mn2+ . Although Mn2+ accumulates in many tissues including brain, the mechanisms and preferences of its mode of entry into cells are not well characterized. The current study used MRI on living organotypic hippocampal slice cultures to detect which transport mechanisms are preferentially used by Mn2+ to enter cells. The use of slice culture overcomes the presence of the blood brain barrier, which limits inferences made with studies of the intact brain in vivo. A range of Mn2+ concentrations were used and their effects on neural activity were assessed to avoid using interfering doses of Mn2+ . Zn2+ and Fe2+ were the most efficient competitors for Mn2+ uptake into the cultured slices, while the presence of Ca2+ or Ca2+ channel antagonists had a more moderate effect. Reducing slice activity via excitatory receptor antagonists was also effective at lowering Mn2+ uptake. In conclusion, a hierarchy of those agents which influence Mn2+ uptake was established to enhance understanding of how Mn2+ enters cells in a cultured slice preparation.
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Affiliation(s)
- Emily Petrus
- Laboratory of Functional and Molecular ImagingNational Institute of Neurological Disorders and Stroke, National Institutes of HealthBethesdaMarylandUSA
| | - Galit Saar
- Laboratory of Functional and Molecular ImagingNational Institute of Neurological Disorders and Stroke, National Institutes of HealthBethesdaMarylandUSA
| | - Alexia Daoust
- Laboratory of Functional and Molecular ImagingNational Institute of Neurological Disorders and Stroke, National Institutes of HealthBethesdaMarylandUSA
| | - Steve Dodd
- Laboratory of Functional and Molecular ImagingNational Institute of Neurological Disorders and Stroke, National Institutes of HealthBethesdaMarylandUSA
| | - Alan P. Koretsky
- Laboratory of Functional and Molecular ImagingNational Institute of Neurological Disorders and Stroke, National Institutes of HealthBethesdaMarylandUSA
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Hermann ER, Chambers E, Davis DN, Montgomery MR, Lin D, Chowanadisai W. Brain Magnetic Resonance Imaging Phenome-Wide Association Study With Metal Transporter Gene SLC39A8. Front Genet 2021; 12:647946. [PMID: 33790950 PMCID: PMC8005600 DOI: 10.3389/fgene.2021.647946] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 02/22/2021] [Indexed: 12/16/2022] Open
Abstract
The SLC39A8 gene encodes a divalent metal transporter, ZIP8. SLC39A8 is associated with pleiotropic effects across multiple tissues, including the brain. We determine the different brain magnetic resonance imaging (MRI) phenotypes associated with SLC39A8. We used a phenome-wide association study approach followed by joint and conditional association analysis. Using the summary statistics datasets from a brain MRI genome-wide association study on adult United Kingdom (UK) Biobank participants, we systematically selected all brain MRI phenotypes associated with single-nucleotide polymorphisms (SNPs) within 500 kb of the SLC39A8 genetic locus. For all significant brain MRI phenotypes, we used GCTA-COJO to determine the number of independent association signals and identify index SNPs for each brain MRI phenotype. Linkage equilibrium for brain phenotypes with multiple independent signals was confirmed by LDpair. We identified 24 brain MRI phenotypes that vary due to MRI type and brain region and contain a SNP associated with the SLC39A8 locus. Missense ZIP8 polymorphism rs13107325 was associated with 22 brain MRI phenotypes. Rare ZIP8 variants present in a published UK Biobank dataset are associated with 6 brain MRI phenotypes also linked to rs13107325. Among the 24 datasets, an additional 4 association signals were identified by GCTA-COJO and confirmed to be in linkage equilibrium with rs13107325 using LDpair. These additional association signals represent new probable causative SNPs in addition to rs13107325. This study provides leads into how genetic variation in SLC39A8, a trace mineral transport gene, is linked to brain structure differences and may affect brain development and nervous system function.
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Affiliation(s)
- Evan R Hermann
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK, United States
| | - Emily Chambers
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK, United States
| | - Danielle N Davis
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK, United States
| | - McKale R Montgomery
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK, United States
| | - Dingbo Lin
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK, United States
| | - Winyoo Chowanadisai
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK, United States
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Kambe T, Taylor KM, Fu D. Zinc transporters and their functional integration in mammalian cells. J Biol Chem 2021; 296:100320. [PMID: 33485965 PMCID: PMC7949119 DOI: 10.1016/j.jbc.2021.100320] [Citation(s) in RCA: 99] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 01/15/2021] [Accepted: 01/20/2021] [Indexed: 12/14/2022] Open
Abstract
Zinc is a ubiquitous biological metal in all living organisms. The spatiotemporal zinc dynamics in cells provide crucial cellular signaling opportunities, but also challenges for intracellular zinc homeostasis with broad disease implications. Zinc transporters play a central role in regulating cellular zinc balance and subcellular zinc distributions. The discoveries of two complementary families of mammalian zinc transporters (ZnTs and ZIPs) in the mid-1990s spurred much speculation on their metal selectivity and cellular functions. After two decades of research, we have arrived at a biochemical description of zinc transport. However, in vitro functions are fundamentally different from those in living cells, where mammalian zinc transporters are directed to specific subcellular locations, engaged in dedicated macromolecular machineries, and connected with diverse cellular processes. Hence, the molecular functions of individual zinc transporters are reshaped and deeply integrated in cells to promote the utilization of zinc chemistry to perform enzymatic reactions, tune cellular responsiveness to pathophysiologic signals, and safeguard cellular homeostasis. At present, the underlying mechanisms driving the functional integration of mammalian zinc transporters are largely unknown. This knowledge gap has motivated a shift of the research focus from in vitro studies of purified zinc transporters to in cell studies of mammalian zinc transporters in the context of their subcellular locations and protein interactions. In this review, we will outline how knowledge of zinc transporters has been accumulated from in-test-tube to in-cell studies, highlighting new insights and paradigm shifts in our understanding of the molecular and cellular basis of mammalian zinc transporter functions.
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Affiliation(s)
- Taiho Kambe
- Division of Integrated Life Science, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Kathryn M Taylor
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, United Kingdom
| | - Dax Fu
- Department of Physiology, Johns Hopkins School of Medicine, Johns Hopkins University, Baltimore, Maryland, USA.
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The Role of Zinc and Copper in Gynecological Malignancies. Nutrients 2020; 12:nu12123732. [PMID: 33287452 PMCID: PMC7761859 DOI: 10.3390/nu12123732] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 11/29/2020] [Accepted: 12/02/2020] [Indexed: 12/14/2022] Open
Abstract
Zinc (Zn) and copper (Cu) are essential microelements, which take part in cellular metabolism, feature in enzymatic systems, and regulate enzyme activity. Homeostasis of these micronutrients is tightly regulated by multiple compensatory mechanisms that balance their concentrations including transporters, importers, and metallothioneins. An altered intake of only one of these trace elements may cause an imbalance in their levels and result in their competition for absorption. Relatively low levels of zinc and increased levels of copper may result in an increased level of oxidative stress and impair the antioxidant properties of multiple enzymes. Altered levels of trace elements were discovered in various pathologies including immunological, degenerative, and inflammatory diseases. Moreover, due to the role of Zn and Cu in oxidative stress and chronic inflammation, they were found to influence cancerogenesis. We review the roles of zinc and copper and their mechanisms in tumor growth, metastasis potential, microenvironment remodeling, and drug resistance. We highlight their role as potential biomarkers for cancer diagnosis, treatment, and prognosis, concentrating on their impact on gynecological malignancies.
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Wang P, Zhang J, He S, Xiao B, Peng X. SLC39A1 contribute to malignant progression and have clinical prognostic impact in gliomas. Cancer Cell Int 2020; 20:573. [PMID: 33292262 PMCID: PMC7694905 DOI: 10.1186/s12935-020-01675-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 11/23/2020] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Gliomas are one of the most common primary tumors of the central nervous system, and have an unfavorable prognosis. SLC39A1 is a zinc ion transport protein which inhibits the progression of prostate cancer. By studying the role and mechanism of SLC39A1 in the progression of gliomas, perhaps a new therapeutic target can be provided for their treatment. METHOD The TCGA, CCGA, GSE16011, GSE44971 and GSE11260 data sets were employed to evaluate the expression level of SLC39A1 in paracancerous and glioma tissues. In addition, Kaplan-Meier analysis, Cox analysis, and the ESTIMATE and CIBERSORT algorithms were used to analyze its prognostic value and immune infiltration correlation. A CCK-8 and flow cytometer were used to measure the effects of SLC39A1 on U87 cell proliferation or apoptosis; RT-qPCR and western blot were used to detect its effects on the expression of MMP2\MMP9. RESULTS SLC39A1 has up-regulated expression in glioma tissues. High SLC39A1 expression predicted significantly worse survival. Univariate and multivariate analysis show that SLC39A1 independently indicated poor prognosis in patients with gliomas. The expression of SLC39A1 is significantly correlated with clinical pathological parameters such as Grade, IDH mutation status, and 1p19q codeletion status. In vitro experimental results show that SLC39A1 promotes proliferation of glioma cells, inhibits their apoptosis, and promotes expression of MMP2\MMP9. In addition, it may affect infiltration of immune cells into the glioma microenvironment. CONCLUSION SLC39A1 may serve as a new prognostic biomarker and potential target for treatment of gliomas.
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Affiliation(s)
- Peng Wang
- The Fifth Affiliated Hospital of Southern Medical University, Guangzhou, 510900, China
| | - Jingjing Zhang
- The Fifth Affiliated Hospital of Southern Medical University, Guangzhou, 510900, China
| | - Shuai He
- Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China
| | - Boan Xiao
- The Fifth Affiliated Hospital of Southern Medical University, Guangzhou, 510900, China
| | - Xiaobin Peng
- The Fifth Affiliated Hospital of Southern Medical University, Guangzhou, 510900, China.
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The role of labile Zn 2+ and Zn 2+-transporters in the pathophysiology of mitochondria dysfunction in cardiomyocytes. Mol Cell Biochem 2020; 476:971-989. [PMID: 33225416 DOI: 10.1007/s11010-020-03964-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 10/23/2020] [Indexed: 02/06/2023]
Abstract
An important energy supplier of cardiomyocytes is mitochondria, similar to other mammalian cells. Studies have demonstrated that any defect in the normal processes controlled by mitochondria can lead to abnormal ROS production, thereby high oxidative stress as well as lack of ATP. Taken into consideration, the relationship between mitochondrial dysfunction and overproduction of ROS as well as the relation between increased ROS and high-level release of intracellular labile Zn2+, those bring into consideration the importance of the events related with those stimuli in cardiomyocytes responsible from cellular Zn2+-homeostasis and responsible Zn2+-transporters associated with the Zn2+-homeostasis and Zn2+-signaling. Zn2+-signaling, controlled by cellular Zn2+-homeostatic mechanisms, is regulated with intracellular labile Zn2+ levels, which are controlled, especially, with the two Zn2+-transporter families; ZIPs and ZnTs. Our experimental studies in mammalian cardiomyocytes and human heart tissue showed that Zn2+-transporters localizes to mitochondria besides sarco(endo)plasmic reticulum and Golgi under physiological condition. The protein levels as well as functions of those transporters can re-distribute under pathological conditions, therefore, they can interplay among organelles in cardiomyocytes to adjust a proper intracellular labile Zn2+ level. In the present review, we aimed to summarize the already known Zn2+-transporters localize to mitochondria and function to stabilize not only the cellular Zn2+ level but also cellular oxidative stress status. In conclusion, one can propose that a detailed understanding of cellular Zn2+-homeostasis and Zn2+-signaling through mitochondria may emphasize the importance of new mitochondria-targeting agents for prevention and/or therapy of cardiovascular dysfunction in humans.
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Csikós A, Takacs P, Miklós I. Comparison of novel single nucleotide polymorphisms of zinc transporters with zinc concentration in the human blood and vaginal tissues. Biometals 2020; 33:323-337. [PMID: 33033990 DOI: 10.1007/s10534-020-00249-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Accepted: 09/16/2020] [Indexed: 12/30/2022]
Abstract
The most important proteins regulating cellular zinc homeostasis belong to two protein families of zinc transporters, the solute carrier family 30 (SLC30A) and solute carrier family 39 (SLC39A). We aimed to identify single nucleotide polymorphisms (SNPs) of the SLC30A and SLC39A genes and its association with blood and vaginal tissue zinc levels since vaginal tissue zinc level may play a role in vaginal remodeling and pathological conditions of the vagina. Blood and vaginal tissue samples were collected from women undergoing surgery for benign gynecological reasons. SNPs of twenty-four zinc transporters were determined by PCR/Sequence method, and the concentration of zinc was assessed by inductively coupled plasma optical emission spectrometry. Sequencing of selected exons revealed 16 SNPs, including five previously unidentified SNPs. Our data showed an association between the number of SNPs (more than six SNPs vs. less than six) per patient and high zinc vaginal tissue levels (67% vs. 33%, p < 0.01). The SLC39A4 SNP 590c A (rs17855765) was significantly more frequent in the group of women with high zinc vaginal tissue levels compared to the group without SNP (93% vs. 7%, p = 0.02). Also, our analysis revealed that the number of SNPs in SLC39A4 was significantly more frequent in patients with low zinc blood levels (76% vs. 24%, p = 0.01). Our findings indicate that different SNPs of the zinc transporter genes may have a significant effect on the blood and vaginal tissue zinc levels.
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Affiliation(s)
- Anett Csikós
- Molecular Biology Group, FemPharma, LLC, Vígkedvű Mihály utca 21. II/5, Hungary, 4024, Debrecen.
| | - Peter Takacs
- Department of Obstetrics and Gynecology, Division of Female Pelvic Medicine and Reconstructive Surgery, Eastern Virginia Medical School, 825 Fairfax Avenue, Suite 526, Norfolk, VA, 23507-2007, USA
| | - Ida Miklós
- Department of Genetics and Applied Microbiology, Faculty of Science and Technology, University of Debrecen, Egyetem tér 1, Hungary, 4032, Debrecen
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Abstract
Abstract
Transition metals such as zinc, copper and iron play vital roles in maintaining physiological functions and homeostasis of living systems. Molecular imaging, including two-photon imaging (TPI), bioluminescence imaging (BLI) and photoacoustic imaging (PAI), could act as non-invasive toolkits for capturing dynamic events in living cells, tissues and whole animals. Herein, we review the recent progress in the development of molecular probes for essential transition metals and their biological applications. We emphasize the contributions of metallostasis to health and disease, and discuss the future research directions about how to harness the great potential of metal sensors.
Graphic Abstract
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37
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Wang M, Phadke M, Packard D, Yadav D, Gorelick F. Zinc: Roles in pancreatic physiology and disease. Pancreatology 2020; 20:1413-1420. [PMID: 32917512 PMCID: PMC7572834 DOI: 10.1016/j.pan.2020.08.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 08/23/2020] [Accepted: 08/25/2020] [Indexed: 12/11/2022]
Abstract
Zinc is an essential trace element. Deficiencies are frequently seen with gastrointestinal diseases, including chronic pancreatitis, nutritional deficiency, and reduced intestinal absorption. Additionally, reduced zinc levels have been linked to cellular changes associated with acute pancreatitis such as enhanced inflammation with increased macrophage activation and production of inflammatory cytokines such as IL-1β, impaired autophagy, and modulation of calcium homeostasis. Preliminary data suggest that zinc deficiency may lead to pancreatic injury in animal models. The purpose of this review is to explore the biologic effects of zinc deficiency that could impact pancreatic disease. MESH KEYWORDS: Malnutrition, inflammation, trace element.
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Affiliation(s)
- Melinda Wang
- Yale School of Medicine, Department of Internal Medicine and VA HealthCare System, CT, USA
| | - Madhura Phadke
- Yale School of Medicine, Department of Internal Medicine and VA HealthCare System, CT, USA
| | - Daniel Packard
- Yale School of Medicine, Department of Internal Medicine and VA HealthCare System, CT, USA
| | - Dhiraj Yadav
- University of Pittsburgh, Department of Medicine, USA
| | - Fred Gorelick
- Yale School of Medicine, Department of Internal Medicine and VA HealthCare System, CT, USA.
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Wang Y, Song W, Wang J, Wang T, Xiong X, Qi Z, Fu W, Yang X, Chen YG. Single-cell transcriptome analysis reveals differential nutrient absorption functions in human intestine. J Exp Med 2020; 217:jem.20191130. [PMID: 31753849 PMCID: PMC7041720 DOI: 10.1084/jem.20191130] [Citation(s) in RCA: 195] [Impact Index Per Article: 48.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 08/28/2019] [Accepted: 10/18/2019] [Indexed: 12/21/2022] Open
Abstract
Single-cell transcriptome analysis of epithelial cells from human ileum, colon, and rectum reveals different nutrient-absorption preferences in the small and large intestine, providing a rich resource for further characterization of human intestine cell constitution and functions. The intestine plays an important role in nutrient digestion and absorption, microbe defense, and hormone secretion. Although major cell types have been identified in the mouse intestinal epithelium, cell type–specific markers and functional assignments are largely unavailable for human intestine. Here, our single-cell RNA-seq analyses of 14,537 epithelial cells from human ileum, colon, and rectum reveal different nutrient absorption preferences in the small and large intestine, suggest the existence of Paneth-like cells in the large intestine, and identify potential new marker genes for human transient-amplifying cells and goblet cells. We have validated some of these insights by quantitative PCR, immunofluorescence, and functional analyses. Furthermore, we show both common and differential features of the cellular landscapes between the human and mouse ilea. Therefore, our data provide the basis for detailed characterization of human intestine cell constitution and functions, which would be helpful for a better understanding of human intestine disorders, such as inflammatory bowel disease and intestinal tumorigenesis.
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Affiliation(s)
- Yalong Wang
- The State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, China
| | - Wanlu Song
- The MOE Key Laboratory of Bioinformatics, Center for Synthetic & Systems Biology, School of Life Sciences, Tsinghua University, Beijing, China
| | - Jilian Wang
- Department of General Surgery, Peking University Third Hospital, Beijing, China
| | - Ting Wang
- The State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, China
| | - Xiaochen Xiong
- The State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, China
| | - Zhen Qi
- The State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, China
| | - Wei Fu
- Department of General Surgery, Peking University Third Hospital, Beijing, China
| | - Xuerui Yang
- The MOE Key Laboratory of Bioinformatics, Center for Synthetic & Systems Biology, School of Life Sciences, Tsinghua University, Beijing, China
| | - Ye-Guang Chen
- The State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, China.,Max-Planck Center for Tissue Stem Cell Research and Regenerative Medicine, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, China
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Strong MD, Hart MD, Tang TZ, Ojo BA, Wu L, Nacke MR, Agidew WT, Hwang HJ, Hoyt PR, Bettaieb A, Clarke SL, Smith BJ, Stoecker BJ, Lucas EA, Lin D, Chowanadisai W. Role of zinc transporter ZIP12 in susceptibility-weighted brain magnetic resonance imaging (MRI) phenotypes and mitochondrial function. FASEB J 2020; 34:10702-12725. [PMID: 32716562 DOI: 10.1096/fj.202000772r] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 07/01/2020] [Accepted: 07/10/2020] [Indexed: 12/16/2022]
Abstract
Brain zinc dysregulation is linked to many neurological disorders. However, the mechanisms regulating brain zinc homeostasis are poorly understood. We performed secondary analyses of brain MRI GWAS and exome sequencing data from adults in the UK Biobank. Coding ZIP12 polymorphisms in zinc transporter ZIP12 (SLC39A12) were associated with altered brain susceptibility weighted MRI (swMRI). Conditional and joint association analyses revealed independent GWAS signals in linkage disequilibrium with 2 missense ZIP12 polymorphisms, rs10764176 and rs72778328, with reduced zinc transport activity. ZIP12 rare coding variants predicted to be deleterious were associated with similar impacts on brain swMRI. In Neuro-2a cells, ZIP12 deficiency by short hairpin RNA (shRNA) depletion or CRISPR/Cas9 genome editing resulted in impaired mitochondrial function, increased superoxide presence, and detectable protein carbonylation. Inhibition of Complexes I and IV of the electron transport chain reduced neurite outgrowth in ZIP12 deficient cells. Transcriptional coactivator PGC-1α, mitochondrial superoxide dismutase (SOD2), and chemical antioxidants α-tocopherol, MitoTEMPO, and MitoQ restored neurite extension impaired by ZIP12 deficiency. Mutant forms of α-synuclein and tau linked to familial Parkinson's disease and frontotemporal dementia, respectively, reduced neurite outgrowth in cells deficient in ZIP12. Zinc and ZIP12 may confer resilience against neurological diseases or premature aging of the brain.
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Affiliation(s)
- Morgan D Strong
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK, USA
| | - Matthew D Hart
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK, USA
| | - Tony Z Tang
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK, USA
| | - Babajide A Ojo
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK, USA
| | - Lei Wu
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK, USA
| | - Mariah R Nacke
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK, USA
| | - Workneh T Agidew
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK, USA
| | - Hong J Hwang
- Department of Biochemistry and Molecular Biology, Oklahoma State University, Stillwater, OK, USA
| | - Peter R Hoyt
- Department of Biochemistry and Molecular Biology, Oklahoma State University, Stillwater, OK, USA
| | - Ahmed Bettaieb
- Department of Nutrition, University of Tennessee, Knoxville, TN, USA
| | - Stephen L Clarke
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK, USA
| | - Brenda J Smith
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK, USA
| | - Barbara J Stoecker
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK, USA
| | - Edralin A Lucas
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK, USA
| | - Dingbo Lin
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK, USA
| | - Winyoo Chowanadisai
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK, USA
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Identification and Functional Annotation of Genes Related to Horses' Performance: From GWAS to Post-GWAS. Animals (Basel) 2020; 10:ani10071173. [PMID: 32664293 PMCID: PMC7401650 DOI: 10.3390/ani10071173] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 07/06/2020] [Accepted: 07/08/2020] [Indexed: 02/07/2023] Open
Abstract
Simple Summary It is assumed that the athletic performance of horses is influenced by a large number of genes; however, to date, not many genomic studies have been performed to identify candidate genes. In this study we performed a systematic review of genome-wide association studies followed by functional analyses aiming to identify the most candidate genes for horse performance. We were successful in identifying 669 candidate genes, from which we built biological process networks. Regulatory elements (transcription factors, TFs) of these genes were identified and used to build a gene–TF network. Genes and TFs presented in this study are suggested to play a role in the studied traits through biological processes related with exercise performance, for example, positive regulation of glucose metabolism, regulation of vascular endothelial growth factor production, skeletal system development, cellular response to fatty acids and cellular response to lipids. In general, this study may provide insights into the genetic architecture underlying horse performance in different breeds around the world. Abstract Integration of genomic data with gene network analysis can be a relevant strategy for unraveling genetic mechanisms. It can be used to explore shared biological processes between genes, as well as highlighting transcription factors (TFs) related to phenotypes of interest. Unlike other species, gene–TF network analyses have not yet been well applied to horse traits. We aimed to (1) identify candidate genes associated with horse performance via systematic review, and (2) build biological processes and gene–TF networks from the identified genes aiming to highlight the most candidate genes for horse performance. Our systematic review considered peer-reviewed articles using 20 combinations of keywords. Nine articles were selected and placed into groups for functional analysis via gene networks. A total of 669 candidate genes were identified. From that, gene networks of biological processes from each group were constructed, highlighting processes associated with horse performance (e.g., regulation of systemic arterial blood pressure by vasopressin and regulation of actin polymerization and depolymerization). Transcription factors associated with candidate genes were also identified. Based on their biological processes and evidence from the literature, we identified the main TFs related to horse performance traits, which allowed us to construct a gene–TF network highlighting TFs and the most candidate genes for horse performance.
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Muraina IA, Bury NR, Scott A, Graham A, Hogstrand C. The zebrafish Znt1a sa17 mutant reveals roles of zinc transporter-1a in embryonic development. J Trace Elem Med Biol 2020; 60:126496. [PMID: 32199393 DOI: 10.1016/j.jtemb.2020.126496] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 02/18/2020] [Accepted: 03/06/2020] [Indexed: 11/21/2022]
Abstract
BACKGROUND Zinc is one of the vital micronutrients required through various developmental stages in animals. Zinc transporter-1 (ZnT1; Slc30a1) is essential in vertebrates for nutritional zinc uptake and cellular zinc extrusion. Knockout of ZnT1 is lethal in vertebrates and there are therefore few functional studies of this protein in vivo. METHODS In the present study we characterised the embryonic development in a zebrafish Znt1a mutant (Znt1asa17) which is lacking the last 40 amino acids of Znt1a as generated by TILLING. In parallel experiments, we compared the development of a zebrafish embryo Znt1a morphant (Znt1aMO) which was generated by knockdown of Znt1a using morpholino-modified oligonucliotides. RESULTS The homozygous Znt1asa17 embryo is viable, but displays a subtle phenotype informing on the biological roles of Znt1a. The Znt1asa17 fish have delayed development, including attenuated epiboly. They further show a decrease in phosphorylated extracellular signal-regulated kinases 1 and 2 (pERK1/2), retarded yolk resorption, and impaired clearance of free Zn2+ from the vitelline fluid and its storage in hatching gland cells. All these aberrations are milder versions of those observed upon knockdown of Znt1a by morpholinos. Interestingly, the phenotype could be rescued by addition of the cell-permeable zinc chelator, N,N,N',N'-tetrakis(2-pyridinylmethyl)-1,2-ethanediamine (TPEN) to the incubation medium and was aggravated by addition of zinc(II). Thus, the Znt1asa17 mutant has a reduced ability to handle zinc and can be characterised as a hypomorph. CONCLUSION This study is the first to show that the last 40 amino acids of Znt1a are of importance for its role in zinc homeostasis and ability to activate the MAPK/ERK pathway contrary to what was previously thought.
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Affiliation(s)
- Issa A Muraina
- King's College London, Department of Nutritional Sciences, School of Life Course Sciences, Metal Metabolism Group, London, UK
| | - Nic R Bury
- King's College London, Department of Nutritional Sciences, School of Life Course Sciences, Metal Metabolism Group, London, UK
| | - Annabella Scott
- Kings College London, Centre for Developmental Neurobiology, London, UK
| | - Anthony Graham
- Kings College London, Centre for Developmental Neurobiology, London, UK
| | - Christer Hogstrand
- King's College London, Department of Nutritional Sciences, School of Life Course Sciences, Metal Metabolism Group, London, UK.
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Ozeki I, Yamaguchi M, Suii H, Tatsumi R, Arakawa T, Nakajima T, Kuwata Y. The association between serum zinc levels and subjective symptoms in zinc deficiency patients with chronic liver disease. J Clin Biochem Nutr 2020; 66:253-261. [PMID: 32523253 DOI: 10.3164/jcbn.19-99] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 12/04/2019] [Indexed: 11/22/2022] Open
Abstract
This study aimed to analyze the association between serum zinc levels and major subjective symptoms in zinc deficiency patients with chronic liver disease. 578 patients with chronic liver disease were enrolled. The patients, whose serum zinc level of <80 µg/dl, completed a questionnaire to determine whether they had subjective symptoms of the five conditions (taste disorder, aphthous stomatitis, dermatitis, alopecia, and anorexia). Then, the association between these subjective symptoms and serum zinc levels was analyzed. In total, 193 patients (33.4%) experienced any subjective symptoms. The prevalence of each symptom was as follows: 36 patients with taste disorder (6.2%), 46 with aphthous stomatitis (8.0%), 77 with dermatitis (13.3%), 46 with alopecia (8.0%), and 53 with anorexia (9.2%). In total, 70.8%, 34.1%, and 26.1% patients with serum zinc levels of <40, ≥40 to <60, and ≥60 to <80 µg/dl, respectively, had these symptoms. When zinc deficiency was defined as a serum zinc level of <80 µg/dl, approximately one-third of patients displayed symptoms presumably originating from zinc deficiency. As serum zinc levels decreased, the prevalence of these symptoms increased. Dermatitis, especially, was relevant to zinc.
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Affiliation(s)
- Itaru Ozeki
- Department of Hepatology, Sapporo Kosei General Hospital, Kita 3 Higashi 8, Chuo-ku, Sapporo 060-0033, Japan
| | - Masakatsu Yamaguchi
- Department of Hepatology, Sapporo Kosei General Hospital, Kita 3 Higashi 8, Chuo-ku, Sapporo 060-0033, Japan
| | - Hirokazu Suii
- Department of Hepatology, Sapporo Kosei General Hospital, Kita 3 Higashi 8, Chuo-ku, Sapporo 060-0033, Japan
| | - Ryoji Tatsumi
- Department of Hepatology, Sapporo Kosei General Hospital, Kita 3 Higashi 8, Chuo-ku, Sapporo 060-0033, Japan
| | - Tomohiro Arakawa
- Department of Hepatology, Sapporo Kosei General Hospital, Kita 3 Higashi 8, Chuo-ku, Sapporo 060-0033, Japan
| | - Tomoaki Nakajima
- Department of Hepatology, Sapporo Kosei General Hospital, Kita 3 Higashi 8, Chuo-ku, Sapporo 060-0033, Japan
| | - Yasuaki Kuwata
- Department of Hepatology, Sapporo Kosei General Hospital, Kita 3 Higashi 8, Chuo-ku, Sapporo 060-0033, Japan
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Chen SW, Wu K, Lv WH, Song CC, Luo Z. Molecular characterization of ten zinc (Zn) transporter genes and their regulation to Zn metabolism in freshwater teleost yellow catfish Pelteobagrus fulvidraco. J Trace Elem Med Biol 2020; 59:126433. [PMID: 31735605 DOI: 10.1016/j.jtemb.2019.126433] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 10/30/2019] [Accepted: 11/06/2019] [Indexed: 01/08/2023]
Abstract
BACKGROUND Zn is an essential trace element for vertebrates, and Zn uptake and transport is related with the ZIP family of Zn transporters. Meantime, Zn also influenced the expression of ZIP family members. METHODS We cloned and characterized the full-length cDNA sequences of ten Zn transport-relevant genes (ZIP1, ZIP3, ZIP6, ZIP7, ZIP8, ZIP9, ZIP10, ZIP11, ZIP13 and ZIP14) from yellow catfish Pelteobagrus fulvidraco, investigated their mRNA tissue expression. These ZIP mRNA expression was also assessed in the primary hepatocytes and intestinal epithelial cells of yellow catfish in response to three Zn levels (0, 30 μM and 60 μM, respectively). RESULTS All these genes shared the similar domains with the corresponding members in mammals. The mRNA expression of the ten ZIP genes was detected in nine-tested tissues, but variable among these tissues. Flow cytometry analysis and confocal microscopy observation indicated that intracellular free Zn2+ concentration in hepatocytes and intestinal epithelial cells increased with increasing Zn incubation concentration at both 24 h and 48 h. Zn incubation differentially influenced mRNA levels of ZIP transporters in the hepatocytes and intestinal epithelial cells, in a time- and cells-dependent manners. In the hepatocytes, at 24 h, compared to the control, Zn addition down-regulated mRNA levels of ZIP1, ZIP3, ZIP6, ZIP7, ZIP8, ZIP9, ZIP11 and ZIP14; however, ZIP10 mRNA levels were lower in 60 μM Zn group than those in the control and 30 μM Zn group. At 48 h, mRNA levels of ZIP1, ZIP6, ZIP7, ZIP9, ZIP10 and ZIP14 declined with increasing Zn incubation concentrations; ZIP3 mRNA levels were the lowest in 60 μM Zn group and showed no significant differences between the control and 30 μM Zn group. In the intestinal epithelial cells, at 24 h, Zn addition down-regulated mRNA levels of ZIP1, ZIP6, ZIP7, ZIP8, ZIP9, ZIP10, ZIP11, ZIP13 and ZIP14; ZIP3 mRNA levels were lower in 60 μM Zn group than those in the control and 30 μM Zn group. At 48 h, Zn addition up-regulated mRNA levels of ZIP6 and ZIP9, but down-regulated mRNA levels of ZIP8, ZIP10 and ZIP13. ZIP7, ZIP11 and ZIP14 mRNA abundances were the lowest in 60 μM Zn group and showed no significant differences between the control and 30 μM Zn group. CONCLUSION For the first time, our study characterized ten ZIP family members in yellow catfish, explored their mRNA tissue expression. Their regulation to Zn addition were also investigated in the hepatocytes and intestinal epithelial cells of yellow catfish. Our study revealed the mechanism of cells exposed to Zn addition and provided novel insights for the regulatory mechanism of Zn homeostasis.
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Affiliation(s)
- Shu-Wei Chen
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Fishery College, Huazhong Agricultural University, Wuhan 430070, China
| | - Kun Wu
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Fishery College, Huazhong Agricultural University, Wuhan 430070, China
| | - Wu-Hong Lv
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Fishery College, Huazhong Agricultural University, Wuhan 430070, China
| | - Chang-Chun Song
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Fishery College, Huazhong Agricultural University, Wuhan 430070, China
| | - Zhi Luo
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Fishery College, Huazhong Agricultural University, Wuhan 430070, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao 266237, China.
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Ozeki I, Nakajima T, Suii H, Tatsumi R, Yamaguchi M, Arakawa T, Kuwata Y, Toyota J, Karino Y. Evaluation of treatment with zinc acetate hydrate in patients with liver cirrhosis complicated by zinc deficiency. Hepatol Res 2020; 50:488-501. [PMID: 31729098 DOI: 10.1111/hepr.13461] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 10/24/2019] [Accepted: 11/04/2019] [Indexed: 12/12/2022]
Abstract
AIM In Japan, no zinc preparation had been approved for therapeutic purposes before March 2017. Zinc acetate hydrate was recently approved for the treatment of hypozincemia. We evaluated the efficacy and safety of treatment with zinc acetate hydrate. METHODS A total of 97 patients with cirrhosis complicated by hypozincemia were treated with zinc acetate hydrate, and their serum zinc normalization rates; factors contributing to normalization; changes in blood ammonia levels; branched-chain amino acids-to-tyrosine ratios; levels of albumin, hemoglobin, alkaline phosphatase, serum copper, and iron; incidence of adverse events; improvement in subjective symptoms; and serum zinc levels taken at 3 months post-treatment were determined. RESULTS The cumulative serum zinc normalization rates, when normalization was defined as achievement of a serum zinc level ≥80 μg/dL, after 2, 4, and 6 months of treatment were 64.9%, 80.3%, and 82.5%, respectively. Multivariate analysis identified an albumin level of ≥3.3 g/dL and branched-chain amino acids to tyrosine ratio of ≥3.46 as factors contributing to zinc normalization within 3 months of treatment. Treatment resulted in a significant decrease in blood ammonia and serum copper levels, and significant increases in branched-chain amino acids-to-tyrosine ratios and alkaline phosphatase levels. Seven (7.2%) patients prematurely discontinued treatment due to hypocupremia. By the end of treatment, subjective symptoms had resolved in 46.2% of patients. By 3 months post-treatment, serum zinc levels had reverted to levels close to those at baseline. CONCLUSIONS Treatment with zinc acetate hydrate resulted in normalization of serum zinc levels at a high rate. The main reasons for discontinuation of treatment included hypocupremia.
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45
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Pascua AM, Nikoloff N, Carranza AC, Anchordoquy JP, Quintana S, Barbisán G, Díaz S, Anchordoquy JM, Furnus CC. Reproductive hormones influence zinc homeostasis in the bovine cumulus-oocyte complex: Impact on intracellular zinc concentration and transporters gene expression. Theriogenology 2020; 146:48-57. [PMID: 32036060 DOI: 10.1016/j.theriogenology.2020.01.054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 12/01/2019] [Accepted: 01/28/2020] [Indexed: 12/19/2022]
Abstract
Zinc (Zn) is a vital trace element for the body and its bioavailability influences numerous reproductive events. However, the mechanisms that regulate Zn homeostasis in the cumulus-oocyte complex (COC) are yet to be elucidated. The aim of this study was to investigate the role of estradiol 17-beta (E2), FSH and LH in Zn homeostasis regulation in bovine COC matured in vitro and Zn transporters gene expression. For this purpose, intracellular Zn levels in oocytes and cumulus cells (CC) were assessed using a Zn-specific fluorescent indicator. In addition, gene expression and sequencing of six Zn transporters (Slc39a6, Slc39a8, Slc39a14, Slc30a3, Slc30a7 and Slc30a9) were assessed. Our results demonstrated that the simultaneous presence of E2, FSH, and LH during oocyte maturation altered intracellular zinc levels and transporters expression in both oocytes and CC. Transporter's gene expression was different in oocytes and CC, possibly due to cell-specific changes in Zn levels during maturation. The interaction effects of Zn with hormonal treatments influenced the results. This study emphasizes that Slc39a6 is highly sensitive to hormone induction. Overall, the hormonal modulation of Zn homeostasis in the COC was evidenced. Also, a preponderant role of FSH as a modulator of Zn intracellular levels and transporter gene expression is suggested.
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Affiliation(s)
- Ana M Pascua
- IGEVET - Instituto de Genética Veterinaria "Ing. Fernando N Dulout"(UNLP-CONICET LA PLATA), Facultad de Ciencias Veterinarias UNLP, calles 60 y 118, B1904AMA La Plata, Buenos Aires, Argentina
| | - Noelia Nikoloff
- IGEVET - Instituto de Genética Veterinaria "Ing. Fernando N Dulout"(UNLP-CONICET LA PLATA), Facultad de Ciencias Veterinarias UNLP, calles 60 y 118, B1904AMA La Plata, Buenos Aires, Argentina
| | - Ana C Carranza
- IGEVET - Instituto de Genética Veterinaria "Ing. Fernando N Dulout"(UNLP-CONICET LA PLATA), Facultad de Ciencias Veterinarias UNLP, calles 60 y 118, B1904AMA La Plata, Buenos Aires, Argentina
| | - Juan P Anchordoquy
- IGEVET - Instituto de Genética Veterinaria "Ing. Fernando N Dulout"(UNLP-CONICET LA PLATA), Facultad de Ciencias Veterinarias UNLP, calles 60 y 118, B1904AMA La Plata, Buenos Aires, Argentina
| | - Silvina Quintana
- CIAS - Centro de Investigación en Abejas Sociales, Departamento de Biología, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350 (7600), Mar del Plata, Buenos Aires, Argentina
| | - Gisela Barbisán
- IGEVET - Instituto de Genética Veterinaria "Ing. Fernando N Dulout"(UNLP-CONICET LA PLATA), Facultad de Ciencias Veterinarias UNLP, calles 60 y 118, B1904AMA La Plata, Buenos Aires, Argentina
| | - Silvina Díaz
- IGEVET - Instituto de Genética Veterinaria "Ing. Fernando N Dulout"(UNLP-CONICET LA PLATA), Facultad de Ciencias Veterinarias UNLP, calles 60 y 118, B1904AMA La Plata, Buenos Aires, Argentina
| | - Juan M Anchordoquy
- IGEVET - Instituto de Genética Veterinaria "Ing. Fernando N Dulout"(UNLP-CONICET LA PLATA), Facultad de Ciencias Veterinarias UNLP, calles 60 y 118, B1904AMA La Plata, Buenos Aires, Argentina
| | - Cecilia C Furnus
- IGEVET - Instituto de Genética Veterinaria "Ing. Fernando N Dulout"(UNLP-CONICET LA PLATA), Facultad de Ciencias Veterinarias UNLP, calles 60 y 118, B1904AMA La Plata, Buenos Aires, Argentina; Cátedra de Citología, Histología y Embriología "A" Facultad de Ciencias Médicas, Universidad Nacional de La Plata, calle 60 y 120 s/n, CP 1900, La Plata, Buenos Aires, Argentina.
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Zhao M, Zhou B. A distinctive sequence motif in the fourth transmembrane domain confers ZIP13 iron function in Drosophila melanogaster. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2019; 1867:118607. [PMID: 31733261 DOI: 10.1016/j.bbamcr.2019.118607] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 11/04/2019] [Accepted: 11/11/2019] [Indexed: 01/17/2023]
Abstract
The zinc/iron permease (ZIP/SLC39A) family plays an important role in metal ion transport and is essential for diverse physiological processes. Members of the ZIP family function primarily in the influx of transition metal ions zinc and iron, into cytoplasm from extracellular space or intracellular organelles. The molecular determinants defining metal ion selectivity among ZIP family members remain unclear. Specifically, we reported before that the Drosophila ZIP family member ZIP13 (dZIP13), functions as an iron exporter and was responsible for pumping iron into the secretory pathway. ZIP13 protein is unique in that it differs from the other LIV-1 subfamily members at transmembrane domain IV (TM4), wherein relative positions of the conserved H and D residues in the HNXXD sequence motif are switched, generating a DNXXH motif. In this study, we undertook an in vivo approach to explore the significance of this D/H exchange. Comparative functional analysis of mutants revealed that the relative positions of D and H are critical for the physiological roles of dZIP13 and its close homologue dZIP7. Swapping D/H position of this DNXXH sequence in dZIP13 resulted in loss of iron activity; normal dZIP13 could not complement dZIP7 loss, but swapping the two relative amino acid positions D and H in dZIP13 was sufficient to make it functionally analogous to its close homologue dZIP7. This work provides the first in vivo functional analysis of a structural motif required to differentiate different transporting functions of ZIPs.
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Affiliation(s)
- Mengran Zhao
- State Key Laboratory of Membrane Biology, School of Life Sciences, Tsinghua University, Beijing, China
| | - Bing Zhou
- State Key Laboratory of Membrane Biology, School of Life Sciences, Tsinghua University, Beijing, China.
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Yanatori I, Richardson DR, Toyokuni S, Kishi F. How iron is handled in the course of heme catabolism: Integration of heme oxygenase with intracellular iron transport mechanisms mediated by poly (rC)-binding protein-2. Arch Biochem Biophys 2019; 672:108071. [PMID: 31421070 DOI: 10.1016/j.abb.2019.108071] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 08/05/2019] [Accepted: 08/10/2019] [Indexed: 02/07/2023]
Abstract
Heme and iron are essential to almost all forms of life. The strict maintenance of heme and iron homeostasis is essential to prevent cellular toxicity and the existence of systemic and intracellular regulation is fundamental. Cytosolic heme can be catabolized and detoxified by heme oxygenases (HOs). Interestingly, free heme detoxification through HOs results in the production of free ferrous iron, which can be potentially hazardous for cells. Recently, the intracellular iron chaperone, poly (rC)-binding protein 2 (PCBP2), has been identified, which can be involved in accepting iron after heme catabolism as well as intracellular iron transport. In fact, HO1, NADPH-cytochrome P450 reductase, and PCBP2 form a functional unit that integrates the catabolism of heme with the binding and transport of iron by PCBP2. In this review, we provide an overview of our understanding of the iron chaperones and discuss the mechanism how iron chaperones bind iron released during the process of heme degradation.
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Affiliation(s)
- Izumi Yanatori
- Department of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, Japan
| | - Des R Richardson
- Department of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, Japan; Department of Pathology and Bosch Institute, University of Sydney, Camperdown, Sydney, New South Wales, 2006, Australia
| | - Shinya Toyokuni
- Department of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, Japan
| | - Fumio Kishi
- Kenjinkai Healthcare Corporation, 530 Asa, Sanyo-Onoda Yamaguchi, 757-0001, Japan.
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48
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Ge T, Yu Y, Cui J, Cai L. The adaptive immune role of metallothioneins in the pathogenesis of diabetic cardiomyopathy: good or bad. Am J Physiol Heart Circ Physiol 2019; 317:H264-H275. [PMID: 31100011 DOI: 10.1152/ajpheart.00123.2019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Diabetes is a metabolic disorder characterized by hyperglycemia, resulting in low-grade systemic inflammation. Diabetic cardiomyopathy (DCM) is a common complication among diabetic patients, and the mechanism underlying its induction of cardiac remodeling and dysfunction remains unclear. Numerous experimental and clinical studies have suggested that adaptive immunity, especially T lymphocyte-mediated immunity, plays a potentially important role in the pathogenesis of diabetes and DCM. Metallothioneins (MTs), cysteine-rich, metal-binding proteins, have antioxidant properties. Some potential mechanisms underlying the cardioprotective effects of MTs include the role of MTs in calcium regulation, zinc homeostasis, insulin sensitization, and antioxidant activity. Moreover, metal homeostasis, especially MT-regulated zinc homeostasis, is essential for immune function. This review discusses aberrant immune regulation in diabetic heart disease with respect to endothelial insulin resistance and the effects of hyperglycemia and hyperlipidemia on tissues and the different effects of intracellular and extracellular MTs on adaptive immunity. This review shows that intracellular MTs are involved in naïve T-cell activation and reduce regulatory T-cell (Treg) polarization, whereas extracellular MTs promote proliferation and survival in naïve T cells and Treg polarization but inhibit their activation, thus revealing potential therapeutic strategies targeting the regulation of immune cell function by MTs.
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Affiliation(s)
- Tingwen Ge
- Cancer Center, First Hospital of Jilin University , Changchun, Jilin , China.,Pediatric Research Institute, Department of Pediatrics, University of Louisville, Norton Health Care, Louisville, Kentucky
| | - Youxi Yu
- Pediatric Research Institute, Department of Pediatrics, University of Louisville, Norton Health Care, Louisville, Kentucky.,Department of Hepatobiliary and Pancreatic Surgery, First Hospital of Jilin University , Changchun, Jilin , China
| | - Jiuwei Cui
- Cancer Center, First Hospital of Jilin University , Changchun, Jilin , China
| | - Lu Cai
- Pediatric Research Institute, Department of Pediatrics, University of Louisville, Norton Health Care, Louisville, Kentucky.,Departments of Radiation Oncology, Pharmacology and Toxicology, University of Louisville , Louisville, Kentucky
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Rai PK, Lee SS, Zhang M, Tsang YF, Kim KH. Heavy metals in food crops: Health risks, fate, mechanisms, and management. ENVIRONMENT INTERNATIONAL 2019; 125:365-385. [PMID: 30743144 DOI: 10.1016/j.envint.2019.01.067] [Citation(s) in RCA: 681] [Impact Index Per Article: 136.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 01/25/2019] [Accepted: 01/26/2019] [Indexed: 05/20/2023]
Abstract
Food security is a high-priority issue for sustainable global development both quantitatively and qualitatively. In recent decades, adverse effects of unexpected contaminants on crop quality have threatened both food security and human health. Heavy metals and metalloids (e.g., Hg, As, Pb, Cd, and Cr) can disturb human metabolomics, contributing to morbidity and even mortality. Therefore, this review focuses on and describes heavy metal contamination in soil-food crop subsystems with respect to human health risks. It also explores the possible geographical pathways of heavy metals in such subsystems. In-depth discussion is further offered on physiological/molecular translocation mechanisms involved in the uptake of metallic contaminants inside food crops. Finally, management strategies are proposed to regain sustainability in soil-food subsystems.
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Affiliation(s)
- Prabhat Kumar Rai
- Department of Environmental Science, Mizoram University, Aizawl 796004, India
| | - Sang Soo Lee
- Department of Environmental Engineering, Yonsei University, Wonju 26493, Republic of Korea
| | - Ming Zhang
- Department of Environmental Engineering, China Jiliang University, Hangzhou 310018, China
| | - Yiu Fai Tsang
- Department of Science and Environmental Studies, The Education University of Hong Kong, Tai Po, New Territories, Hong Kong
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, Seoul 04763, Republic of Korea.
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50
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Wang X, Zhang M, Flores SRL, Woloshun RR, Yang C, Yin L, Xiang P, Xu X, Garrick MD, Vidyasagar S, Merlin D, Collins JF. Oral Gavage of Ginger Nanoparticle-Derived Lipid Vectors Carrying Dmt1 siRNA Blunts Iron Loading in Murine Hereditary Hemochromatosis. Mol Ther 2019; 27:493-506. [PMID: 30713087 PMCID: PMC6401192 DOI: 10.1016/j.ymthe.2019.01.003] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 12/21/2018] [Accepted: 01/08/2019] [Indexed: 12/19/2022] Open
Abstract
Nanoparticles (NPs) have been utilized to deliver drugs to the intestinal epithelium in vivo. Moreover, NPs derived from edible plants are less toxic than synthetic NPs. Here, we utilized ginger NP-derived lipid vectors (GDLVs) in a proof-of-concept investigation to test the hypothesis that inhibiting expression of divalent metal-ion transporter 1 (Dmt1) would attenuate iron loading in a mouse model of hereditary hemochromatosis (HH). Initial experiments using duodenal epithelial organ cultures from intestine-specific Dmt1 knockout (KO) (Dmt1int/int) mice in the Ussing chamber established that Dmt1 is the only active iron importer during iron-deficiency anemia. Further, when Dmt1int/int mice were crossed with mice lacking the iron-regulatory hormone, hepcidin (Hepc-/-), iron loading was abolished. Hence, intestinal Dmt1 is required for the excessive iron absorption that typifies HH. Additional experiments established a protocol to produce GDLVs carrying functional Dmt1 small interfering RNAs (siRNAs) and to target these gene delivery vehicles to the duodenal epithelium in vivo (by incorporating folic acid [FA]). When FA-GDLVs carrying Dmt1 siRNA were administered to weanling Hepc-/- mice for 16 days, intestinal Dmt1 mRNA expression was attenuated and tissue iron accumulation was blunted. Oral delivery of functional siRNAs by FA-GDLVs is a suitable therapeutic approach to mitigate iron loading in murine HH.
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Affiliation(s)
- Xiaoyu Wang
- Food Science & Human Nutrition Department, University of Florida, Gainesville, FL, USA
| | - Mingzhen Zhang
- Institute of Medical Engineering, School of Basic Medical Science, Health Science Center, Xi'an Jiaotong University, Xi'an, China; Center for Diagnostics and Therapeutics, Institute for Biomedical Science, Georgia State University, Atlanta, GA, USA
| | - Shireen R L Flores
- Food Science & Human Nutrition Department, University of Florida, Gainesville, FL, USA
| | - Regina R Woloshun
- Food Science & Human Nutrition Department, University of Florida, Gainesville, FL, USA
| | - Chunhua Yang
- Center for Diagnostics and Therapeutics, Institute for Biomedical Science, Georgia State University, Atlanta, GA, USA
| | - Liangjie Yin
- Department of Radiation Oncology, University of Florida, Gainesville, FL, USA
| | - Ping Xiang
- Food Science & Human Nutrition Department, University of Florida, Gainesville, FL, USA; State Key Lab of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, China
| | - Xiaodong Xu
- Department of Radiation Oncology, University of Florida, Gainesville, FL, USA
| | - Michael D Garrick
- Department of Biochemistry, State University of New York (SUNY), Buffalo, NY, USA
| | | | - Didier Merlin
- Center for Diagnostics and Therapeutics, Institute for Biomedical Science, Georgia State University, Atlanta, GA, USA; Atlanta Veterans Affairs Medical Center, Decatur, GA, USA
| | - James F Collins
- Food Science & Human Nutrition Department, University of Florida, Gainesville, FL, USA.
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