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Xia Z, Tang B, Li X, Li X, Jia Y, Jiang J, Chen J, Song J, Liu S, Min J, Wang F. A Novel Role for the Longevity-Associated Protein SLC39A11 as a Manganese Transporter. RESEARCH (WASHINGTON, D.C.) 2024; 7:0440. [PMID: 39114488 PMCID: PMC11304475 DOI: 10.34133/research.0440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Accepted: 07/11/2024] [Indexed: 08/10/2024]
Abstract
The identification of aging- and longevity-associated genes is important for promoting healthy aging. By analyzing a large cohort of Chinese centenarians, we previously found that single-nucleotide polymorphisms (SNPs) in the SLC39A11 gene (also known as ZIP11) are associated with longevity in males. However, the function of the SLC39A11 protein remains unclear. Here, we found that SLC39A11 expression is significantly reduced in patients with Hutchinson-Gilford progeria syndrome (HGPS). In addition, we found that zebrafish with a mutation in slc39a11 that significantly reduces its expression have an accelerated aging phenotype, including a shortened average lifespan, muscle atrophy and reduced swimming, impaired muscle regeneration, gut damage, and abnormal morphology in the reproductive system. Interestingly, these signs of premature aging were more pronounced in male zebrafish than in females. RNA-sequencing analysis revealed that cellular senescence may serve as a potential mechanism for driving this slc39a11 deficiency-induced phenotype in mutant zebrafish. Moreover, immunofluorescence showed significantly increased DNA damage and reactive oxygen species signaling in slc39a11 mutant zebrafish. Using inductively coupled plasma mass spectrometry (ICP-MS), we found that manganese significantly accumulates in slc39a11 mutant zebrafish, as well as in the serum of both global Slc39a11 knockout and hepatocyte-specific Slc39a11 knockout mice, suggesting that this metal transporter regulates systemic manganese levels. Finally, using cultured human fibroblasts, we found that both knocking down SLC39A11 and exposure to high extracellular manganese increased cellular senescence. These findings provide compelling evidence that SLC39A11 serves to protect against the aging process, at least in part by regulating cellular manganese homeostasis.
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Affiliation(s)
- Zhidan Xia
- The First Affiliated Hospital, The Second Affiliated Hospital, Institute of Translational Medicine, School of Public Health, Zhejiang Provincial Key Laboratory of Bioelectromagnetics, State Key Laboratory of Experimental Hematology,
Zhejiang University School of Medicine, Hangzhou, China
| | - Biyao Tang
- The First Affiliated Hospital, The Second Affiliated Hospital, Institute of Translational Medicine, School of Public Health, Zhejiang Provincial Key Laboratory of Bioelectromagnetics, State Key Laboratory of Experimental Hematology,
Zhejiang University School of Medicine, Hangzhou, China
- School of Public Health, Basic Medical Sciences, The First Affiliated Hospital, Hengyang Medical School,
University of South China, Hengyang, China
- School of Public Health, School of Basic Medical Sciences, The First Affiliated Hospital,
Xinxiang Medical University, Xinxiang, China
| | - Xiaopeng Li
- The First Affiliated Hospital, The Second Affiliated Hospital, Institute of Translational Medicine, School of Public Health, Zhejiang Provincial Key Laboratory of Bioelectromagnetics, State Key Laboratory of Experimental Hematology,
Zhejiang University School of Medicine, Hangzhou, China
| | - Xinran Li
- The First Affiliated Hospital, The Second Affiliated Hospital, Institute of Translational Medicine, School of Public Health, Zhejiang Provincial Key Laboratory of Bioelectromagnetics, State Key Laboratory of Experimental Hematology,
Zhejiang University School of Medicine, Hangzhou, China
| | - Yangfan Jia
- The First Affiliated Hospital, The Second Affiliated Hospital, Institute of Translational Medicine, School of Public Health, Zhejiang Provincial Key Laboratory of Bioelectromagnetics, State Key Laboratory of Experimental Hematology,
Zhejiang University School of Medicine, Hangzhou, China
| | - Jianwei Jiang
- The First Affiliated Hospital, The Second Affiliated Hospital, Institute of Translational Medicine, School of Public Health, Zhejiang Provincial Key Laboratory of Bioelectromagnetics, State Key Laboratory of Experimental Hematology,
Zhejiang University School of Medicine, Hangzhou, China
| | - Jingyao Chen
- The Core Facilities,
Zhejiang University School of Medicine, Hangzhou, China
| | - Jingshu Song
- The First Affiliated Hospital, The Second Affiliated Hospital, Institute of Translational Medicine, School of Public Health, Zhejiang Provincial Key Laboratory of Bioelectromagnetics, State Key Laboratory of Experimental Hematology,
Zhejiang University School of Medicine, Hangzhou, China
| | - Siyi Liu
- The First Affiliated Hospital, The Second Affiliated Hospital, Institute of Translational Medicine, School of Public Health, Zhejiang Provincial Key Laboratory of Bioelectromagnetics, State Key Laboratory of Experimental Hematology,
Zhejiang University School of Medicine, Hangzhou, China
| | - Junxia Min
- The First Affiliated Hospital, The Second Affiliated Hospital, Institute of Translational Medicine, School of Public Health, Zhejiang Provincial Key Laboratory of Bioelectromagnetics, State Key Laboratory of Experimental Hematology,
Zhejiang University School of Medicine, Hangzhou, China
| | - Fudi Wang
- The First Affiliated Hospital, The Second Affiliated Hospital, Institute of Translational Medicine, School of Public Health, Zhejiang Provincial Key Laboratory of Bioelectromagnetics, State Key Laboratory of Experimental Hematology,
Zhejiang University School of Medicine, Hangzhou, China
- School of Public Health, Basic Medical Sciences, The First Affiliated Hospital, Hengyang Medical School,
University of South China, Hengyang, China
- School of Public Health, School of Basic Medical Sciences, The First Affiliated Hospital,
Xinxiang Medical University, Xinxiang, China
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2
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Prajapati M, Zhang JZ, Chong GS, Chiu L, Mercadante CJ, Kowalski HL, Antipova O, Lai B, Ralle M, Jackson BP, Punshon T, Guo S, Aghajan M, Bartnikas TB. Manganese transporter SLC30A10 and iron transporters SLC40A1 and SLC11A2 impact dietary manganese absorption. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.07.17.603814. [PMID: 39071439 PMCID: PMC11275741 DOI: 10.1101/2024.07.17.603814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/30/2024]
Abstract
SLC30A10 deficiency is a disease of severe manganese excess attributed to loss of SLC30A10-dependent manganese excretion via the gastrointestinal tract. Patients develop dystonia, cirrhosis, and polycythemia. They are treated with chelators but also respond to oral iron, suggesting that iron can outcompete manganese for absorption in this disease. Here we explore the latter observation. Intriguingly, manganese absorption is increased in Slc30a10-deficient mice despite manganese excess. Studies of multiple mouse models indicate that increased dietary manganese absorption reflects two processes: loss of manganese export from enterocytes into the gastrointestinal tract lumen by SLC30A10, and increased absorption of dietary manganese by iron transporters SLC11A2 (DMT1) and SLC40A1 (ferroportin). Our work demonstrates that aberrant absorption contributes prominently to SLC30A10 deficiency and expands our understanding of biological interactions between iron and manganese. Based on these results, we propose a reconsideration of the role of iron transporters in manganese homeostasis is warranted.
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Affiliation(s)
- Milankumar Prajapati
- Department of Pathology and Laboratory Medicine, Brown University, Providence, RI, 02912, USA
| | - Jared Z. Zhang
- Department of Pathology and Laboratory Medicine, Brown University, Providence, RI, 02912, USA
| | - Grace S. Chong
- Department of Pathology and Laboratory Medicine, Brown University, Providence, RI, 02912, USA
| | - Lauren Chiu
- Department of Pathology and Laboratory Medicine, Brown University, Providence, RI, 02912, USA
| | - Courtney J. Mercadante
- Department of Pathology and Laboratory Medicine, Brown University, Providence, RI, 02912, USA
| | - Heather L. Kowalski
- Department of Pathology and Laboratory Medicine, Brown University, Providence, RI, 02912, USA
| | - Olga Antipova
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - Barry Lai
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - Martina Ralle
- Department of Molecular and Medical Genetics, Oregon Health & Science University, Portland, OR, 97239, USA
| | - Brian P. Jackson
- Biomedical National Elemental Imaging Resource, Dartmouth College, Hanover, NH, 03755, USA
| | - Tracy Punshon
- Biomedical National Elemental Imaging Resource, Dartmouth College, Hanover, NH, 03755, USA
| | - Shuling Guo
- Ionis Pharmaceuticals, Inc., Carlsbad, CA, 92010, USA
| | | | - Thomas B. Bartnikas
- Department of Pathology and Laboratory Medicine, Brown University, Providence, RI, 02912, USA
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3
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Hutchens S, Melkote A, Jursa T, Shawlot W, Trasande L, Smith DR, Mukhopadhyay S. Elevated thyroid manganese reduces thyroid iodine to induce hypothyroidism in mice, but not rats, lacking SLC30A10 transporter. Metallomics 2024; 16:mfae029. [PMID: 38866719 PMCID: PMC11216084 DOI: 10.1093/mtomcs/mfae029] [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: 03/20/2024] [Accepted: 06/11/2024] [Indexed: 06/14/2024]
Abstract
Elevated manganese (Mn) accumulates in the brain and induces neurotoxicity. SLC30A10 is an Mn efflux transporter that controls body Mn levels. We previously reported that full-body Slc30a10 knockout mice (1) recapitulate the body Mn retention phenotype of humans with loss-of-function SLC30A10 mutations and (2) unexpectedly develop hypothyroidism induced by Mn accumulation in the thyroid, which reduces intra-thyroid thyroxine. Subsequent analyses of National Health and Nutrition Examination Survey data identified an association between serum Mn and subclinical thyroid changes. The emergence of thyroid deficits as a feature of Mn toxicity suggests that changes in thyroid function may be an underappreciated, but critical, modulator of Mn-induced disease. To better understand the relationship between thyroid function and Mn toxicity, here we further defined the mechanism of Mn-induced hypothyroidism using mouse and rat models. Slc30a10 knockout mice exhibited a profound deficit in thyroid iodine levels that occurred contemporaneously with increases in thyroid Mn levels and preceded the onset of overt hypothyroidism. Wild-type Mn-exposed mice also exhibited increased thyroid Mn levels, an inverse correlation between thyroid Mn and iodine levels, and subclinical hypothyroidism. In contrast, thyroid iodine levels were unaltered in newly generated Slc30a10 knockout rats despite an increase in thyroid Mn levels, and the knockout rats were euthyroid. Thus, Mn-induced thyroid dysfunction in genetic or Mn exposure-induced mouse models occurs due to a reduction in thyroid iodine subsequent to an increase in thyroid Mn levels. Moreover, rat and mouse thyroids have differential sensitivities to Mn, which may impact the manifestations of Mn-induced disease in these routinely used animal models.
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Affiliation(s)
- Steven Hutchens
- Division of Pharmacology & Toxicology, College of Pharmacy, The University of Texas at Austin, Austin, TX, USA
| | - Ashvini Melkote
- Division of Pharmacology & Toxicology, College of Pharmacy, The University of Texas at Austin, Austin, TX, USA
| | - Thomas Jursa
- Department of Microbiology and Environmental Toxicology, University of California at Santa Cruz, Santa Cruz, CA, USA
| | - William Shawlot
- Mouse Genetic Engineering Facility, The University of Texas at Austin, Austin, TX, USA
| | - Leonardo Trasande
- Department of Pediatrics, Division of Environmental Pediatrics and Departments of Population Health and Environmental Medicine, New York University Grossman School of Medicine, New York, NY, USA
- New York University Wagner School of Public Service, New York, NY, USA
- New York University College of Global Public Health, New York, NY, USA
| | - Donald R Smith
- Department of Microbiology and Environmental Toxicology, University of California at Santa Cruz, Santa Cruz, CA, USA
| | - Somshuvra Mukhopadhyay
- Division of Pharmacology & Toxicology, College of Pharmacy, The University of Texas at Austin, Austin, TX, USA
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4
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Choi EK, Rajendiran TM, Soni T, Park JH, Aring L, Muraleedharan CK, Garcia-Hernandez V, Kamada N, Samuelson LC, Nusrat A, Iwase S, Seo YA. The manganese transporter SLC39A8 links alkaline ceramidase 1 to inflammatory bowel disease. Nat Commun 2024; 15:4775. [PMID: 38839750 PMCID: PMC11153611 DOI: 10.1038/s41467-024-49049-8] [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: 02/25/2022] [Accepted: 05/17/2024] [Indexed: 06/07/2024] Open
Abstract
The metal ion transporter SLC39A8 is associated with physiological traits and diseases, including blood manganese (Mn) levels and inflammatory bowel diseases (IBD). The mechanisms by which SLC39A8 controls Mn homeostasis and epithelial integrity remain elusive. Here, we generate Slc39a8 intestinal epithelial cell-specific-knockout (Slc39a8-IEC KO) mice, which display markedly decreased Mn levels in blood and most organs. Radiotracer studies reveal impaired intestinal absorption of dietary Mn in Slc39a8-IEC KO mice. SLC39A8 is localized to the apical membrane and mediates 54Mn uptake in intestinal organoid monolayer cultures. Unbiased transcriptomic analysis identifies alkaline ceramidase 1 (ACER1), a key enzyme in sphingolipid metabolism, as a potential therapeutic target for SLC39A8-associated IBDs. Importantly, treatment with an ACER1 inhibitor attenuates colitis in Slc39a8-IEC KO mice by remedying barrier dysfunction. Our results highlight the essential roles of SLC39A8 in intestinal Mn absorption and epithelial integrity and offer a therapeutic target for IBD associated with impaired Mn homeostasis.
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Affiliation(s)
- Eun-Kyung Choi
- Department of Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Thekkelnaycke M Rajendiran
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, USA
- Michigan Regional Comprehensive Metabolomics Resource Core, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Tanu Soni
- Michigan Regional Comprehensive Metabolomics Resource Core, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Jin-Ho Park
- Department of Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Luisa Aring
- Department of Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | | | | | - Nobuhiko Kamada
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, USA
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Linda C Samuelson
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Asma Nusrat
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Shigeki Iwase
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Young Ah Seo
- Department of Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, MI, USA.
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5
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Prajapati M, Zhang JZ, Chiu L, Chong GS, Mercadante CJ, Kowalski HL, Delaney B, Anderson JA, Guo S, Aghajan M, Bartnikas TB. Hepatic HIF2 is a key determinant of manganese excess and polycythemia in SLC30A10 deficiency. JCI Insight 2024; 9:e169738. [PMID: 38652538 PMCID: PMC11141921 DOI: 10.1172/jci.insight.169738] [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: 02/14/2023] [Accepted: 04/10/2024] [Indexed: 04/25/2024] Open
Abstract
Manganese is an essential yet potentially toxic metal. Initially reported in 2012, mutations in SLC30A10 are the first known inherited cause of manganese excess. SLC30A10 is an apical membrane protein that exports manganese from hepatocytes into bile and from enterocytes into the lumen of the gastrointestinal tract. SLC30A10 deficiency results in impaired gastrointestinal manganese excretion, leading to manganese excess, neurologic deficits, liver cirrhosis, polycythemia, and erythropoietin excess. Neurologic and liver disease are attributed to manganese toxicity. Polycythemia is attributed to erythropoietin excess. The goal of this study was to determine the basis of erythropoietin excess in SLC30A10 deficiency. Here, we demonstrate that transcription factors hypoxia-inducible factor 1a (Hif1a) and 2a (Hif2a), key mediators of the cellular response to hypoxia, are both upregulated in livers of Slc30a10-deficient mice. Hepatic Hif2a deficiency corrected erythropoietin expression and polycythemia and attenuated aberrant hepatic gene expression in Slc30a10-deficient mice, while hepatic Hif1a deficiency had no discernible impact. Hepatic Hif2a deficiency also attenuated manganese excess, though the underlying cause of this is not clear at this time. Overall, our results indicate that hepatic HIF2 is a key determinant of pathophysiology in SLC30A10 deficiency and expand our understanding of the contribution of HIFs to human disease.
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Affiliation(s)
- Milankumar Prajapati
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA
| | - Jared Z. Zhang
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA
| | - Lauren Chiu
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA
| | - Grace S. Chong
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA
| | - Courtney J. Mercadante
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA
| | - Heather L. Kowalski
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA
| | - Bradley Delaney
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA
| | - Jessica A. Anderson
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA
| | - Shuling Guo
- Ionis Pharmaceuticals, Inc., Carlsbad, California, USA
| | | | - Thomas B. Bartnikas
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA
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6
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Nishito Y, Kamimura Y, Nagamatsu S, Yamamoto N, Yasui H, Kambe T. Zinc and manganese homeostasis closely interact in mammalian cells. FASEB J 2024; 38:e23605. [PMID: 38597508 DOI: 10.1096/fj.202400181r] [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: 01/27/2024] [Revised: 03/13/2024] [Accepted: 03/28/2024] [Indexed: 04/11/2024]
Abstract
Understanding the homeostatic interactions among essential trace metals is important for explaining their roles in cellular systems. Recent studies in vertebrates suggest that cellular Mn metabolism is related to Zn metabolism in multifarious cellular processes. However, the underlying mechanism remains unclear. In this study, we examined the changes in the expression of proteins involved in cellular Zn and/or Mn homeostatic control and measured the Mn as well as Zn contents and Zn enzyme activities to elucidate the effects of Mn and Zn homeostasis on each other. Mn treatment decreased the expression of the Zn homeostatic proteins metallothionein (MT) and ZNT1 and reduced Zn enzyme activities, which were attributed to the decreased Zn content. Moreover, loss of Mn efflux transport protein decreased MT and ZNT1 expression and Zn enzyme activity without changing extracellular Mn content. This reduction was not observed when supplementing with the same Cu concentrations and in cells lacking Cu efflux proteins. Furthermore, cellular Zn homeostasis was oppositely regulated in cells expressing Zn and Mn importer ZIP8, depending on whether Zn or Mn concentration was elevated in the extracellular milieu. Our results provide novel insights into the intricate interactions between Mn and Zn homeostasis in mammalian cells and facilitate our understanding of the physiopathology of Mn, which may lead to the development of treatment strategies for Mn-related diseases in the future.
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Affiliation(s)
- Yukina Nishito
- Division of Integrated Life Science, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Yoshiki Kamimura
- Division of Integrated Life Science, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Shino Nagamatsu
- Division of Integrated Life Science, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Nao Yamamoto
- Division of Integrated Life Science, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Hiroyuki Yasui
- Department of Analytical and Bioinorganic Chemistry, Division of Analytical and Physical Sciences, Kyoto Pharmaceutical University, Kyoto, Japan
| | - Taiho Kambe
- Division of Integrated Life Science, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
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7
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Prajapati M, Quenneville CB, Zhang JZ, Chong GS, Chiu L, Ma B, Ward LD, Tu HC, Bartnikas TB. AAV-mediated hepatic expression of SLC30A10 and the Thr95Ile variant attenuates manganese excess and other phenotypes in Slc30a10-deficient mice. J Biol Chem 2024; 300:105732. [PMID: 38336290 PMCID: PMC10933546 DOI: 10.1016/j.jbc.2024.105732] [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: 08/10/2023] [Revised: 01/17/2024] [Accepted: 01/29/2024] [Indexed: 02/12/2024] Open
Abstract
The manganese (Mn) export protein SLC30A10 is essential for Mn excretion via the liver and intestines. Patients with SLC30A10 deficiency develop Mn excess, dystonia, liver disease, and polycythemia. Recent genome-wide association studies revealed a link between the SLC30A10 variant T95I and markers of liver disease. The in vivo relevance of this variant has yet to be investigated. Using in vitro and in vivo models, we explore the impact of the T95I variant on SLC30A10 function. While SLC30A10 I95 expressed at lower levels than T95 in transfected cell lines, both T95 and I95 variants protected cells similarly from Mn-induced toxicity. Adeno-associated virus 8-mediated expression of T95 or I95 SLC30A10 using the liver-specific thyroxine binding globulin promoter normalized liver Mn levels in mice with hepatocyte Slc30a10 deficiency. Furthermore, Adeno-associated virus-mediated expression of T95 or I95 SLC30A10 normalized red blood cell parameters and body weights and attenuated Mn levels and differential gene expression in livers and brains of mice with whole body Slc30a10 deficiency. While our in vivo data do not indicate that the T95I variant significantly compromises SLC30A10 function, it does reinforce the notion that the liver is a key site of SLC30A10 function. It also supports the idea that restoration of hepatic SLC30A10 expression is sufficient to attenuate phenotypes in SLC30A10 deficiency.
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Affiliation(s)
- Milankumar Prajapati
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA
| | | | - Jared Z Zhang
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA
| | - Grace S Chong
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA
| | - Lauren Chiu
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA
| | - Bangyi Ma
- Alnylam Pharmaceuticals, Cambridge, Massachusetts, USA
| | - Lucas D Ward
- Alnylam Pharmaceuticals, Cambridge, Massachusetts, USA
| | - Ho-Chou Tu
- Alnylam Pharmaceuticals, Cambridge, Massachusetts, USA.
| | - Thomas B Bartnikas
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA.
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8
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Warden A, Mayfield RD, Gurol KC, Hutchens S, Liu C, Mukhopadhyay S. Loss of SLC30A10 manganese transporter alters expression of neurotransmission genes and activates hypoxia-inducible factor signaling in mice. Metallomics 2024; 16:mfae007. [PMID: 38285613 PMCID: PMC10883138 DOI: 10.1093/mtomcs/mfae007] [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: 10/10/2023] [Accepted: 01/16/2024] [Indexed: 01/31/2024]
Abstract
The essential metal manganese (Mn) induces neuromotor disease at elevated levels. The manganese efflux transporter SLC30A10 regulates brain Mn levels. Homozygous loss-of-function mutations in SLC30A10 induce hereditary Mn neurotoxicity in humans. Our prior characterization of Slc30a10 knockout mice recapitulated the high brain Mn levels and neuromotor deficits reported in humans. But, mechanisms of Mn-induced motor deficits due to SLC30A10 mutations or elevated Mn exposure are unclear. To gain insights into this issue, we characterized changes in gene expression in the basal ganglia, the main brain region targeted by Mn, of Slc30a10 knockout mice using unbiased transcriptomics. Compared with littermates, >1000 genes were upregulated or downregulated in the basal ganglia sub-regions (i.e. caudate putamen, globus pallidus, and substantia nigra) of the knockouts. Pathway analyses revealed notable changes in genes regulating synaptic transmission and neurotransmitter function in the knockouts that may contribute to the motor phenotype. Expression changes in the knockouts were essentially normalized by a reduced Mn chow, establishing that changes were Mn dependent. Upstream regulator analyses identified hypoxia-inducible factor (HIF) signaling, which we recently characterized to be a primary cellular response to elevated Mn, as a critical mediator of the transcriptomic changes in the basal ganglia of the knockout mice. HIF activation was also evident in the liver of the knockout mice. These results: (i) enhance understanding of the pathobiology of Mn-induced motor disease; (ii) identify specific target genes/pathways for future mechanistic analyses; and (iii) independently corroborate the importance of the HIF pathway in Mn homeostasis and toxicity.
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Affiliation(s)
- Anna Warden
- Waggoner Center for Alcohol and Addiction Research, The University of Texas at Austin, Austin, TX 78712, USA
| | - R Dayne Mayfield
- Waggoner Center for Alcohol and Addiction Research, The University of Texas at Austin, Austin, TX 78712, USA
| | - Kerem C Gurol
- Division of Pharmacology & Toxicology, College of Pharmacy; and Institute for Neuroscience, The University of Texas at Austin, Austin, TX 78712, USA
| | - Steven Hutchens
- Division of Pharmacology & Toxicology, College of Pharmacy; and Institute for Neuroscience, The University of Texas at Austin, Austin, TX 78712, USA
| | - Chunyi Liu
- Division of Pharmacology & Toxicology, College of Pharmacy; and Institute for Neuroscience, The University of Texas at Austin, Austin, TX 78712, USA
| | - Somshuvra Mukhopadhyay
- Division of Pharmacology & Toxicology, College of Pharmacy; and Institute for Neuroscience, The University of Texas at Austin, Austin, TX 78712, USA
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9
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Shi JH, Chen YX, Feng Y, Yang X, Lin J, Wang T, Wei CC, Ma XH, Yang R, Cao D, Zhang H, Xie X, Xie Z, Zhang WJ. Fructose overconsumption impairs hepatic manganese homeostasis and ammonia disposal. Nat Commun 2023; 14:7934. [PMID: 38040719 PMCID: PMC10692208 DOI: 10.1038/s41467-023-43609-0] [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: 03/28/2023] [Accepted: 11/15/2023] [Indexed: 12/03/2023] Open
Abstract
Arginase, a manganese (Mn)-dependent enzyme, is indispensable for urea generation and ammonia disposal in the liver. The potential role of fructose in Mn and ammonia metabolism is undefined. Here we demonstrate that fructose overconsumption impairs hepatic Mn homeostasis and ammonia disposal in male mice. Fructose overexposure reduces liver Mn content as well as its activity of arginase and Mn-SOD, and impairs the clearance of blood ammonia under liver dysfunction. Mechanistically, fructose activates the Mn exporter Slc30a10 gene transcription in the liver in a ChREBP-dependent manner. Hepatic overexpression of Slc30a10 can mimic the effect of fructose on liver Mn content and ammonia disposal. Hepatocyte-specific deletion of Slc30a10 or ChREBP increases liver Mn contents and arginase activity, and abolishes their responsiveness to fructose. Collectively, our data establish a role of fructose in hepatic Mn and ammonia metabolism through ChREBP/Slc30a10 pathway, and postulate fructose dietary restriction for the prevention and treatment of hyperammonemia.
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Affiliation(s)
- Jian-Hui Shi
- National Key Laboratory of Immunity & Inflammation and Department of Pathophysiology, Naval Medical University, Shanghai, China
| | - Yu-Xia Chen
- National Key Laboratory of Immunity & Inflammation and Department of Pathophysiology, Naval Medical University, Shanghai, China
| | - Yingying Feng
- National Key Laboratory of Immunity & Inflammation and Department of Pathophysiology, Naval Medical University, Shanghai, China
- NHC Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China
| | - Xiaohang Yang
- NHC Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China
| | - Jie Lin
- National Key Laboratory of Immunity & Inflammation and Department of Pathophysiology, Naval Medical University, Shanghai, China
| | - Ting Wang
- NHC Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China
| | - Chun-Chun Wei
- National Key Laboratory of Immunity & Inflammation and Department of Pathophysiology, Naval Medical University, Shanghai, China
| | - Xian-Hua Ma
- National Key Laboratory of Immunity & Inflammation and Department of Pathophysiology, Naval Medical University, Shanghai, China
| | - Rui Yang
- National Key Laboratory of Immunity & Inflammation and Department of Pathophysiology, Naval Medical University, Shanghai, China
| | - Dongmei Cao
- National Key Laboratory of Immunity & Inflammation and Department of Pathophysiology, Naval Medical University, Shanghai, China
| | - Hai Zhang
- National Key Laboratory of Immunity & Inflammation and Department of Pathophysiology, Naval Medical University, Shanghai, China
| | - Xiangyang Xie
- NHC Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China
| | - Zhifang Xie
- National Key Laboratory of Immunity & Inflammation and Department of Pathophysiology, Naval Medical University, Shanghai, China
| | - Weiping J Zhang
- National Key Laboratory of Immunity & Inflammation and Department of Pathophysiology, Naval Medical University, Shanghai, China.
- NHC Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China.
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10
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Wang X, Huang R, Wang Y, Zhou W, Hu Y, Yao Y, Cheng K, Li X, Xu B, Zhang J, Xu Y, Zeng F, Zhu Y, Chen XW. Manganese regulation of COPII condensation controls circulating lipid homeostasis. Nat Cell Biol 2023; 25:1650-1663. [PMID: 37884645 DOI: 10.1038/s41556-023-01260-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 09/18/2023] [Indexed: 10/28/2023]
Abstract
Precise control of circulating lipids is instrumental in health and disease. Bulk lipids, carried by specialized lipoproteins, are secreted into the circulation, initially via the coat protein complex II (COPII). How the universal COPII machinery accommodates the abundant yet unconventional lipoproteins remains unclear, let alone its therapeutic translation. Here we report that COPII uses manganese-tuning, self-constrained condensation to selectively drive lipoprotein delivery and set lipid homeostasis in vivo. Serendipitously, adenovirus hijacks the condensation-based transport mechanism, thus enabling the identification of cytosolic manganese as an unexpected control signal. Manganese directly binds the inner COPII coat and enhances its condensation, thereby shifting the assembly-versus-dynamics balance of the transport machinery. Manganese can be mobilized from mitochondria stores to signal COPII, and selectively controls lipoprotein secretion with a distinctive, bell-shaped function. Consequently, dietary titration of manganese enables tailored lipid management that counters pathological dyslipidaemia and atherosclerosis, implicating a condensation-targeting strategy with broad therapeutic potential for cardio-metabolic health.
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Affiliation(s)
- Xiao Wang
- State Key Laboratory of Membrane Biology, Peking University, Beijing, China.
- Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing, China.
- PKU-THU Joint Center for Life Sciences, Peking University, Beijing, China.
| | - Runze Huang
- State Key Laboratory of Membrane Biology, Peking University, Beijing, China
- Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing, China
| | - Yawei Wang
- State Key Laboratory of Membrane Biology, Peking University, Beijing, China
- PKU-THU Joint Center for Life Sciences, Peking University, Beijing, China
| | - Wenjing Zhou
- State Key Laboratory of Membrane Biology, Peking University, Beijing, China
- Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing, China
| | - Yating Hu
- State Key Laboratory of Membrane Biology, Peking University, Beijing, China
- Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing, China
| | - Yuanhang Yao
- State Key Laboratory of Membrane Biology, Peking University, Beijing, China
- Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing, China
| | - Kunlun Cheng
- State Key Laboratory of Membrane Biology, Peking University, Beijing, China
- Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing, China
| | - Xin Li
- State Key Laboratory of Membrane Biology, Peking University, Beijing, China
- Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing, China
| | - Bolin Xu
- State Key Laboratory of Membrane Biology, Peking University, Beijing, China
- Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing, China
| | - Jie Zhang
- Department of Clinical Research Center, Dazhou Hospital, Dazhou, Sichuan, China
| | - Yaowen Xu
- Department of Clinical Research Center, Dazhou Hospital, Dazhou, Sichuan, China
| | - Fanxin Zeng
- Department of Clinical Research Center, Dazhou Hospital, Dazhou, Sichuan, China
| | - Yuangang Zhu
- State Key Laboratory of Membrane Biology, Peking University, Beijing, China
- Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing, China
| | - Xiao-Wei Chen
- State Key Laboratory of Membrane Biology, Peking University, Beijing, China.
- Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing, China.
- PKU-THU Joint Center for Life Sciences, Peking University, Beijing, China.
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11
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Hutchens S, Jursa TP, Melkote A, Grant SM, Smith DR, Mukhopadhyay S. Hepatic and intestinal manganese excretion are both required to regulate brain manganese during elevated manganese exposure. Am J Physiol Gastrointest Liver Physiol 2023; 325:G251-G264. [PMID: 37461848 PMCID: PMC10511180 DOI: 10.1152/ajpgi.00047.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 06/26/2023] [Accepted: 07/10/2023] [Indexed: 08/15/2023]
Abstract
Manganese (Mn) is essential but neurotoxic at elevated levels. Under physiological conditions, Mn is primarily excreted by the liver, with the intestines playing a secondary role. Recent analyses of tissue-specific Slc30a10 or Slc39a14 knockout mice (SLC30A10 and SLC39A14 are Mn transporters) revealed that, under physiological conditions: 1) excretion of Mn by the liver and intestines is a major pathway that regulates brain Mn; and surprisingly, 2) the intestines compensate for loss of hepatic Mn excretion in controlling brain Mn. The unexpected importance of the intestines in controlling physiological brain Mn led us to determine the role of hepatic and intestinal Mn excretion in regulating brain Mn during elevated Mn exposure. We used liver- or intestine-specific Slc30a10 knockout mice as models to inhibit hepatic or intestinal Mn excretion. Compared with littermates, both knockout strains exhibited similar increases in brain Mn after elevated Mn exposure in early or later life. Thus, unlike physiological conditions, both hepatic and intestinal Mn excretion are required to control brain Mn during elevated Mn exposure. However, brain Mn levels of littermates and both knockout strains exposed to elevated Mn only in early life were normalized in later life. Thus, hepatic and intestinal Mn excretion play compensatory roles in clearing brain Mn accumulated by early life Mn exposure. Finally, neuromotor assays provided evidence consistent with a role for hepatic and intestinal Mn excretion in functionally modulating Mn neurotoxicity during Mn exposure. Put together, these findings substantially enhance understanding of the regulation of brain Mn by excretion.NEW & NOTEWORTHY This article shows that, in contrast with expectations from prior studies and physiological conditions, excretion of manganese by the intestines and liver is equally important in controlling brain manganese during human-relevant manganese exposure. The results provide foundational insights about the interorgan mechanisms that control brain manganese homeostasis at the organism level and have important implications for the development of therapeutics to treat manganese-induced neurological disease.
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Affiliation(s)
- Steven Hutchens
- Division of Pharmacology and Toxicology, College of Pharmacy, and Institute for Neuroscience, The University of Texas at Austin, Austin, Texas, United States
| | - Thomas P Jursa
- Department of Microbiology and Environmental Toxicology, University of California at Santa Cruz, Santa Cruz, California, United States
| | - Ashvini Melkote
- Division of Pharmacology and Toxicology, College of Pharmacy, and Institute for Neuroscience, The University of Texas at Austin, Austin, Texas, United States
| | - Stephanie M Grant
- Division of Pharmacology and Toxicology, College of Pharmacy, and Institute for Neuroscience, The University of Texas at Austin, Austin, Texas, United States
| | - Donald R Smith
- Department of Microbiology and Environmental Toxicology, University of California at Santa Cruz, Santa Cruz, California, United States
| | - Somshuvra Mukhopadhyay
- Division of Pharmacology and Toxicology, College of Pharmacy, and Institute for Neuroscience, The University of Texas at Austin, Austin, Texas, United States
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12
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Kadam A, Jadiya P, Tomar D. Post-translational modifications and protein quality control of mitochondrial channels and transporters. Front Cell Dev Biol 2023; 11:1196466. [PMID: 37601094 PMCID: PMC10434574 DOI: 10.3389/fcell.2023.1196466] [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: 03/29/2023] [Accepted: 07/24/2023] [Indexed: 08/22/2023] Open
Abstract
Mitochondria play a critical role in energy metabolism and signal transduction, which is tightly regulated by proteins, metabolites, and ion fluxes. Metabolites and ion homeostasis are mainly mediated by channels and transporters present on mitochondrial membranes. Mitochondria comprise two distinct compartments, the outer mitochondrial membrane (OMM) and the inner mitochondrial membrane (IMM), which have differing permeabilities to ions and metabolites. The OMM is semipermeable due to the presence of non-selective molecular pores, while the IMM is highly selective and impermeable due to the presence of specialized channels and transporters which regulate ion and metabolite fluxes. These channels and transporters are modulated by various post-translational modifications (PTMs), including phosphorylation, oxidative modifications, ions, and metabolites binding, glycosylation, acetylation, and others. Additionally, the mitochondrial protein quality control (MPQC) system plays a crucial role in ensuring efficient molecular flux through the mitochondrial membranes by selectively removing mistargeted or defective proteins. Inefficient functioning of the transporters and channels in mitochondria can disrupt cellular homeostasis, leading to the onset of various pathological conditions. In this review, we provide a comprehensive overview of the current understanding of mitochondrial channels and transporters in terms of their functions, PTMs, and quality control mechanisms.
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Affiliation(s)
- Ashlesha Kadam
- Department of Internal Medicine, Section of Cardiovascular Medicine, Section of Molecular Medicine, Wake Forest University School of Medicine, Winston-Salem, NC, United States
| | - Pooja Jadiya
- Department of Internal Medicine, Section of Gerontology and Geriatric Medicine, Section of Molecular Medicine, Wake Forest University School of Medicine, Winston-Salem, NC, United States
| | - Dhanendra Tomar
- Department of Internal Medicine, Section of Cardiovascular Medicine, Section of Molecular Medicine, Wake Forest University School of Medicine, Winston-Salem, NC, United States
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13
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Liu Q, Jenkitkasemwong S, Prami TA, McCabe SM, Zhao N, Hojyo S, Fukada T, Knutson MD. Metal-ion transporter SLC39A8 is required for brain manganese uptake and accumulation. J Biol Chem 2023; 299:105078. [PMID: 37482277 PMCID: PMC10457451 DOI: 10.1016/j.jbc.2023.105078] [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: 01/16/2023] [Revised: 07/14/2023] [Accepted: 07/17/2023] [Indexed: 07/25/2023] Open
Abstract
Manganese (Mn) is an essential nutrient, but is toxic in excess. Whole-body Mn levels are regulated in part by the metal-ion influx transporter SLC39A8, which plays an essential role in the liver by reclaiming Mn from bile. Physiological roles of SLC39A8 in Mn homeostasis in other tissues, however, remain largely unknown. To screen for extrahepatic requirements for SLC39A8 in tissue Mn homeostasis, we crossed Slc39a8-inducible global-KO (Slc39a8 iKO) mice with Slc39a14 KO mice, which display markedly elevated blood and tissue Mn levels. Tissues were then analyzed by inductively coupled plasma-mass spectrometry to determine levels of Mn. Although Slc39a14 KO; Slc39a8 iKO mice exhibited systemic hypermanganesemia and increased Mn loading in the bone and kidney due to Slc39a14 deficiency, we show Mn loading was markedly decreased in the brains of these animals, suggesting a role for SLC39A8 in brain Mn accumulation. Levels of other divalent metals in the brain were unaffected, indicating a specific effect of SLC39A8 on Mn. In vivo radiotracer studies using 54Mn in Slc39a8 iKO mice revealed that SLC39A8 is required for Mn uptake by the brain, but not most other tissues. Furthermore, decreased 54Mn uptake in the brains of Slc39a8 iKO mice was associated with efficient inactivation of Slc39a8 in isolated brain microvessels but not in isolated choroid plexus, suggesting SLC39A8 mediates brain Mn uptake via the blood-brain barrier. These findings establish SLC39A8 as a candidate therapeutic target for mitigating Mn uptake and accumulation in the brain, the primary organ of Mn toxicity.
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Affiliation(s)
- Qingli Liu
- Food Science and Human Nutrition Department, University of Florida, Gainesville, Florida, USA
| | - Supak Jenkitkasemwong
- Food Science and Human Nutrition Department, University of Florida, Gainesville, Florida, USA
| | - Tamanna Afrin Prami
- Food Science and Human Nutrition Department, University of Florida, Gainesville, Florida, USA
| | - Shannon Morgan McCabe
- School of Nutritional Sciences and Wellness, The University of Arizona, Tucson, Arizona, USA
| | - Ningning Zhao
- School of Nutritional Sciences and Wellness, The University of Arizona, Tucson, Arizona, USA
| | - Shintaro Hojyo
- Molecular Psychoimmunology, Institute for Genetic Medicine, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Toshiyuki Fukada
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima, Japan
| | - Mitchell D Knutson
- Food Science and Human Nutrition Department, University of Florida, Gainesville, Florida, USA.
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14
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Zhang K, Qi C, Cai K. Manganese-Based Tumor Immunotherapy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2205409. [PMID: 36121368 DOI: 10.1002/adma.202205409] [Citation(s) in RCA: 48] [Impact Index Per Article: 48.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 08/26/2022] [Indexed: 05/12/2023]
Abstract
As an essential micronutrient, manganese (Mn) participates in various physiological processes and plays important roles in host immune system, hematopoiesis, endocrine function, and oxidative stress regulation. Mn-based nanoparticles are considered to be biocompatible and show versatile applications in nanomedicine, in particular utilized in tumor immunotherapy in the following ways: 1) acting as a biocompatible nanocarrier to deliver immunotherapeutic agents for tumor immunotherapy; 2) serving as an adjuvant to regulate tumor immune microenvironment and enhance immunotherapy; 3) activating host's immune system through the cGAS-STING pathway to trigger tumor immunotherapy; 4) real-time monitoring tumor immunotherapy effect by magnetic resonance imaging (MRI) since Mn2+ ions are ideal MRI contrast agent which can significantly enhance the T1 -weighted MRI signal after binding to proteins. This comprehensive review focuses on the most recent progress of Mn-based nanoplatforms in tumor immunotherapy. The characteristics of Mn are first discussed to guide the design of Mn-based multifunctional nanoplatforms. Then the biomedical applications of Mn-based nanoplatforms, including immunotherapy alone, immunotherapy-involved multimodal synergistic therapy, and imaging-guided immunotherapy are discussed in detail. Finally, the challenges and future developments of Mn-based tumor immunotherapy are highlighted.
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Affiliation(s)
- Ke Zhang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Chao Qi
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Kaiyong Cai
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
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15
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Taylor CA, Grant SM, Jursa T, Melkote A, Fulthorpe R, Aschner M, Smith DR, Gonzales RA, Mukhopadhyay S. SLC30A10 manganese transporter in the brain protects against deficits in motor function and dopaminergic neurotransmission under physiological conditions. Metallomics 2023; 15:mfad021. [PMID: 36990693 PMCID: PMC10103839 DOI: 10.1093/mtomcs/mfad021] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 03/28/2023] [Indexed: 03/31/2023]
Abstract
Loss-of-function mutations in SLC30A10 induce hereditary manganese (Mn)-induced neuromotor disease in humans. We previously identified SLC30A10 to be a critical Mn efflux transporter that controls physiological brain Mn levels by mediating hepatic and intestinal Mn excretion in adolescence/adulthood. Our studies also revealed that in adulthood, SLC30A10 in the brain regulates brain Mn levels when Mn excretion capacity is overwhelmed (e.g. after Mn exposure). But, the functional role of brain SLC30A10 under physiological conditions is unknown. We hypothesized that, under physiological conditions, brain SLC30A10 may modulate brain Mn levels and Mn neurotoxicity in early postnatal life because body Mn excretion capacity is reduced in this developmental stage. We discovered that Mn levels of pan-neuronal/glial Slc30a10 knockout mice were elevated in specific brain regions (thalamus) during specific stages of early postnatal development (postnatal day 21), but not in adulthood. Furthermore, adolescent or adult pan-neuronal/glial Slc30a10 knockouts exhibited neuromotor deficits. The neuromotor dysfunction of adult pan-neuronal/glial Slc30a10 knockouts was associated with a profound reduction in evoked striatal dopamine release without dopaminergic neurodegeneration or changes in striatal tissue dopamine levels. Put together, our results identify a critical physiological function of brain SLC30A10-SLC30A10 in the brain regulates Mn levels in specific brain regions and periods of early postnatal life, which protects against lasting deficits in neuromotor function and dopaminergic neurotransmission. These findings further suggest that a deficit in dopamine release may be a likely cause of early-life Mn-induced motor disease.
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Affiliation(s)
- Cherish A Taylor
- Division of Pharmacology & Toxicology, College of Pharmacy; and Institute for Neuroscience, The University of Texas at Austin, Austin, TX 78712, USA
| | - Stephanie M Grant
- Division of Pharmacology & Toxicology, College of Pharmacy; and Institute for Neuroscience, The University of Texas at Austin, Austin, TX 78712, USA
| | - Thomas Jursa
- Department of Microbiology and Environmental Toxicology, University of California at Santa Cruz, Santa Cruz, CA 95064, USA
| | - Ashvini Melkote
- Division of Pharmacology & Toxicology, College of Pharmacy; and Institute for Neuroscience, The University of Texas at Austin, Austin, TX 78712, USA
| | - Rebecca Fulthorpe
- Division of Pharmacology & Toxicology, College of Pharmacy; and Institute for Neuroscience, The University of Texas at Austin, Austin, TX 78712, USA
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx NY 10461, USA
| | - Donald R Smith
- Department of Microbiology and Environmental Toxicology, University of California at Santa Cruz, Santa Cruz, CA 95064, USA
| | - Rueben A Gonzales
- Division of Pharmacology & Toxicology, College of Pharmacy; and Institute for Neuroscience, The University of Texas at Austin, Austin, TX 78712, USA
| | - Somshuvra Mukhopadhyay
- Division of Pharmacology & Toxicology, College of Pharmacy; and Institute for Neuroscience, The University of Texas at Austin, Austin, TX 78712, USA
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16
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Prajapati M, Zhang JZ, Mercadante CJ, Kowalski HL, Delaney B, Anderson JA, Guo S, Aghajan M, Bartnikas TB. Hypoxia-inducible factor 2 is a key determinant of manganese excess and polycythemia in SLC30A10 deficiency. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.02.20.529270. [PMID: 36865210 PMCID: PMC9980069 DOI: 10.1101/2023.02.20.529270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
Manganese is an essential yet potentially toxic metal. Initially reported in 2012, mutations in SLC30A10 are the first known inherited cause of manganese excess. SLC30A10 is an apical membrane transport protein that exports manganese from hepatocytes into bile and from enterocytes into the lumen of the gastrointestinal tract. SLC30A10 deficiency results in impaired gastrointestinal manganese excretion, leading to severe manganese excess, neurologic deficits, liver cirrhosis, polycythemia, and erythropoietin excess. Neurologic and liver disease are attributed to manganese toxicity. Polycythemia is attributed to erythropoietin excess, but the basis of erythropoietin excess in SLC30A10 deficiency has yet to be established. Here we demonstrate that erythropoietin expression is increased in liver but decreased in kidneys in Slc30a10-deficient mice. Using pharmacologic and genetic approaches, we show that liver expression of hypoxia-inducible factor 2 (Hif2), a transcription factor that mediates the cellular response to hypoxia, is essential for erythropoietin excess and polycythemia in Slc30a10-deficient mice, while hypoxia-inducible factor 1 (HIF1) plays no discernible role. RNA-seq analysis determined that Slc30a10-deficient livers exhibit aberrant expression of a large number of genes, most of which align with cell cycle and metabolic processes, while hepatic Hif2 deficiency attenuates differential expression of half of these genes in mutant mice. One such gene downregulated in Slc30a10-deficient mice in a Hif2-dependent manner is hepcidin, a hormonal inhibitor of dietary iron absorption. Our analyses indicate that hepcidin downregulation serves to increase iron absorption to meet the demands of erythropoiesis driven by erythropoietin excess. Finally, we also observed that hepatic Hif2 deficiency attenuates tissue manganese excess, although the underlying cause of this observation is not clear at this time. Overall, our results indicate that HIF2 is a key determinant of pathophysiology in SLC30A10 deficiency.
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Affiliation(s)
- Milankumar Prajapati
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, 02912, USA
| | - Jared Z. Zhang
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, 02912, USA
| | - Courtney J. Mercadante
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, 02912, USA
| | - Heather L. Kowalski
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, 02912, USA
| | - Bradley Delaney
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, 02912, USA
| | - Jessica A. Anderson
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, 02912, USA
| | - Shuling Guo
- Ionis Pharmaceuticals, Inc., Carlsbad, CA, 92010, USA
| | | | - Thomas B. Bartnikas
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, 02912, USA
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17
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Diniz WJS, Ward AK, McCarthy KL, Kassetas CJ, Baumgaertner F, Reynolds LP, Borowicz PP, Sedivec KK, Kirsch JD, Dorsam ST, Neville TL, Forcherio JC, Scott R, Caton JS, Dahlen CR. Periconceptual Maternal Nutrition Affects Fetal Liver Programming of Energy- and Lipid-Related Genes. Animals (Basel) 2023; 13:ani13040600. [PMID: 36830387 PMCID: PMC9951695 DOI: 10.3390/ani13040600] [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: 12/27/2022] [Revised: 02/01/2023] [Accepted: 02/07/2023] [Indexed: 02/11/2023] Open
Abstract
During pregnancy, the fetus relies on the dam for its nutrient supply. Nutritional stimuli during fetal organ development can program hepatic metabolism and function. Herein, we investigated the role of vitamin and mineral supplementation (VTM or NoVTM-at least 71 days pre-breeding to day 83 of gestation) and rate of weight gain (low (LG) or moderate (MG)-from breeding to day 83) on the fetal liver transcriptome and the underlying biological pathways. Crossbred Angus beef heifers (n = 35) were randomly assigned to one of four treatments in a 2 × 2 factorial design (VTM_LG, VTM_MG, NoVTM_LG, and NoVTM_MG). Gene expression was measured with RNA-Seq in fetal livers collected on day 83 ± 0.27 of gestation. Our results show that vitamin and mineral supplementation and rate of weight gain led to the differential expression of hepatic genes in all treatments. We identified 591 unique differentially expressed genes across all six VTM-gain contrasts (FDR ≤ 0.1). Over-represented pathways were related to energy metabolism, including PPAR and PI3K-Akt signaling pathways, as well as lipid metabolism, mineral transport, and amino acid transport. Our findings suggest that periconceptual maternal nutrition affects fetal hepatic function through altered expression of energy- and lipid-related genes.
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Affiliation(s)
- Wellison J. S. Diniz
- Department of Animal Sciences, Auburn University, Auburn, AL 36849, USA
- Correspondence:
| | - Alison K. Ward
- Department of Animal Sciences, North Dakota State University, Fargo, ND 58108, USA
| | - Kacie L. McCarthy
- Department of Animal Science, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
| | - Cierrah J. Kassetas
- Department of Animal Sciences, North Dakota State University, Fargo, ND 58108, USA
| | | | - Lawrence P. Reynolds
- Department of Animal Sciences, North Dakota State University, Fargo, ND 58108, USA
| | - Pawel P. Borowicz
- Department of Animal Sciences, North Dakota State University, Fargo, ND 58108, USA
| | - Kevin K. Sedivec
- Central Grasslands Research and Extension Center, North Dakota State University, Streeter, ND 58483, USA
| | - James D. Kirsch
- Department of Animal Sciences, North Dakota State University, Fargo, ND 58108, USA
| | - Sheri T. Dorsam
- Department of Animal Sciences, North Dakota State University, Fargo, ND 58108, USA
| | - Tammi L. Neville
- Department of Animal Sciences, North Dakota State University, Fargo, ND 58108, USA
| | | | - Ronald Scott
- Purina Animal Nutrition LLC, Gray Summit, MO 63039, USA
| | - Joel S. Caton
- Department of Animal Sciences, North Dakota State University, Fargo, ND 58108, USA
| | - Carl R. Dahlen
- Department of Animal Sciences, North Dakota State University, Fargo, ND 58108, USA
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18
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Gurol KC, Li D, Broberg K, Mukhopadhyay S. Manganese efflux transporter SLC30A10 missense polymorphism T95I associated with liver injury retains manganese efflux activity. Am J Physiol Gastrointest Liver Physiol 2023; 324:G78-G88. [PMID: 36414535 PMCID: PMC9829465 DOI: 10.1152/ajpgi.00213.2022] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 11/18/2022] [Accepted: 11/18/2022] [Indexed: 11/24/2022]
Abstract
The activity of the manganese (Mn) efflux transporter SLC30A10 in the liver and intestines is critical for Mn excretion and preventing Mn toxicity. Homozygous loss-of-function mutations in SLC30A10 are a well-established cause of hereditary Mn toxicity. But, the relationship between more common SLC30A10 polymorphisms, Mn homeostasis, and disease is only recently emerging. In 2021, the first coding SNP in SLC30A10 (T95I) was associated with liver disease raising the hypothesis that the T95I substitution may induce disease by inhibiting the Mn efflux function of SLC30A10. Here, we test this hypothesis using structural, viability, and metal quantification approaches. Analyses of a predicted structure of SLC30A10 revealed that the side chain of T95 pointed away from the putative Mn-binding cavity, raising doubts about the impact of the T95I substitution on SLC30A10 function. In HeLa or HepG2 cells, overexpression of SLC30A10-WT or T95I resulted in comparable reductions of intracellular Mn levels and protection against Mn-induced cell death. Furthermore, ΔSLC30A10 HepG2 cells, generated using CRISPR/Cas9, exhibited elevated Mn levels and heightened sensitivity to Mn-induced cell death, and these phenotypic changes were similarly rescued by expression of SLC30A10-WT or T95I. Finally, turnover rates of SLC30A10-WT or T95I were also comparable. In summary, our results indicate that the Mn transport activity of SLC30A10-T95I is essentially comparable to the WT protein. Our findings imply that SLC30A10-T95I either has a complex association with liver injury that extends beyond the simple reduction in SLC30A10 activity or alternatively the T95I mutation lacks a causal role in liver disease.NEW & NOTEWORTHY This study demonstrates that the T95I polymorphism in the manganese transporter SLC30A10, which has been associated with liver disease in human GWAS studies, does not impact transporter function in cell culture. These findings raise doubts about the causal relationship of the T95I polymorphism with human disease and highlight the importance of validating GWAS findings using mechanistic approaches.
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Affiliation(s)
- Kerem C Gurol
- Division of Pharmacology and Toxicology, College of Pharmacy, The University of Texas at Austin, Austin, Texas
- Institute for Neuroscience, The University of Texas at Austin, Austin, Texas
| | - Danyang Li
- Division of Pharmacology and Toxicology, College of Pharmacy, The University of Texas at Austin, Austin, Texas
- Institute for Neuroscience, The University of Texas at Austin, Austin, Texas
| | - Karin Broberg
- Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
| | - Somshuvra Mukhopadhyay
- Division of Pharmacology and Toxicology, College of Pharmacy, The University of Texas at Austin, Austin, Texas
- Institute for Neuroscience, The University of Texas at Austin, Austin, Texas
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McCabe S, Limesand K, Zhao N. Recent progress toward understanding the role of ZIP14 in regulating systemic manganese homeostasis. Comput Struct Biotechnol J 2023; 21:2332-2338. [PMID: 37020930 PMCID: PMC10070054 DOI: 10.1016/j.csbj.2023.03.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 03/22/2023] [Accepted: 03/22/2023] [Indexed: 03/30/2023] Open
Abstract
ZIP14 is a metal transporter essential for the regulation of body manganese homeostasis. The physiological functions of ZIP14 have been uncovered mainly through two lines of in vivo studies that examined the phenotypes of ZIP14 loss, including studies of humans with ZIP14 mutations and animals with ZIP14 deficiency. This mini review aims at presenting an updated view of the important advances made towards understanding the genetic and pathological mechanisms of brain manganese overload caused by ZIP14 deficiency.
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20
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Shi J, Li Y, Zhang D, Yu M, Zhou W. Manganese and the cGAS-STING Pathway in Infectious Mononucleosis Caused by Epstein-Barr Virus Infection. Viral Immunol 2023; 36:48-54. [PMID: 36493365 DOI: 10.1089/vim.2022.0108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
To study the clinical significance of manganese (Mn) in the serum of children with infectious mononucleosis (IM) caused by Epstein-Barr virus (EBV) infection, we analyzed the correlation between Mn and the cyclic GMP-AMP synthase (cGAS)-stimulator of interferon genes (STING) pathway and explored the immune pathogenesis of EBV infection. Children diagnosed with IM comprised the IM group, and healthy children during the same period were selected as the normal control group. Real-time reverse transcription-polymerase chain reaction was used to detect the mRNA expression levels of cGAS, STING, Tank-binding kinase 1 (TBK1), interferon regulatory factor 3 (IRF3), and related inflammatory factors, and Mn in serum was detected by inductively coupled plasma mass spectrometry. Interferon (IFN)-α and IFN-β expression levels in serum were detected by enzyme-linked immunosorbent assay, and the correlation between Mn levels and clinical manifestations and laboratory tests was analyzed. Mn levels and the expression levels of cGAS, STING, and related inflammatory factors were significantly higher in children with IM than in healthy children. Furthermore, Mn levels in children with IM were positively correlated with the expression levels of cGAS and related inflammatory factors. Thus, Mn, cGAS, STING, and inflammatory cytokines may be involved in the immune mechanism of IM caused by EBV infection.
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Affiliation(s)
- Jinjin Shi
- Department of Infectious Disease, Children's Hospital of Soochow University, Soochow University, Suzhou, China.,Department of Internal Medicine, Children's Hospital of Wujiang District, Suzhou, China
| | - Yuqin Li
- Department of Infectious Disease, Children's Hospital of Soochow University, Soochow University, Suzhou, China
| | - Dandan Zhang
- Department of Infectious Disease, Children's Hospital of Soochow University, Soochow University, Suzhou, China
| | - Min Yu
- Department of Infectious Disease, Children's Hospital of Soochow University, Soochow University, Suzhou, China
| | - Weifang Zhou
- Department of Infectious Disease, Children's Hospital of Soochow University, Soochow University, Suzhou, China
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21
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Park J, Cleary MB, Li D, Mattocks JA, Xu J, Wang H, Mukhopadhyay S, Gale EM, Cotruvo JA. A genetically encoded fluorescent sensor for manganese(II), engineered from lanmodulin. Proc Natl Acad Sci U S A 2022; 119:e2212723119. [PMID: 36508659 PMCID: PMC9907080 DOI: 10.1073/pnas.2212723119] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 11/10/2022] [Indexed: 12/15/2022] Open
Abstract
The design of selective metal-binding sites is a challenge in both small-molecule and macromolecular chemistry. Selective recognition of manganese (II)-the first-row transition metal ion that tends to bind with the lowest affinity to ligands, as described by the Irving-Williams series-is particularly difficult. As a result, there is a dearth of chemical biology tools with which to study manganese physiology in live cells, which would advance understanding of photosynthesis, host-pathogen interactions, and neurobiology. Here we report the rational re-engineering of the lanthanide-binding protein, lanmodulin, into genetically encoded fluorescent sensors for MnII, MnLaMP1 and MnLaMP2. These sensors with effective Kd(MnII) of 29 and 7 µM, respectively, defy the Irving-Williams series to selectively detect MnII in vitro and in vivo. We apply both sensors to visualize kinetics of bacterial labile manganese pools. Biophysical studies indicate the importance of coordinated solvent and hydrophobic interactions in the sensors' selectivity. Our results establish lanmodulin as a versatile scaffold for design of selective protein-based biosensors and chelators for metals beyond the f-block.
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Affiliation(s)
- Jennifer Park
- Department of Chemistry, The Pennsylvania State University, University Park, PA16802
| | - Michael B. Cleary
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital / Harvard Medical School, Charlestown, MA02129
| | - Danyang Li
- Division of Pharmacology and Toxicology, College of Pharmacy, Institute for Cellular and Molecular Biology, and Institute for Neuroscience, The University of Texas at Austin, Austin, TX78712
| | - Joseph A. Mattocks
- Department of Chemistry, The Pennsylvania State University, University Park, PA16802
| | - Jiansong Xu
- Department of Chemistry, The Pennsylvania State University, University Park, PA16802
| | - Huan Wang
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital / Harvard Medical School, Charlestown, MA02129
| | - Somshuvra Mukhopadhyay
- Division of Pharmacology and Toxicology, College of Pharmacy, Institute for Cellular and Molecular Biology, and Institute for Neuroscience, The University of Texas at Austin, Austin, TX78712
| | - Eric M. Gale
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital / Harvard Medical School, Charlestown, MA02129
| | - Joseph A. Cotruvo
- Department of Chemistry, The Pennsylvania State University, University Park, PA16802
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22
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Campbell JL, Clewell HJ, Van Landingham C, Gentry PR, Keene AM, Taylor MD, Andersen ME. Incorporation of rapid association/dissociation processes in tissues into the monkey and human physiologically based pharmacokinetic models for manganese. Toxicol Sci 2022; 191:212-226. [PMID: 36453847 PMCID: PMC9936208 DOI: 10.1093/toxsci/kfac123] [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] [Indexed: 12/03/2022] Open
Abstract
In earlier physiologically based pharmacokinetic (PBPK) models for manganese (Mn), the kinetics of transport of Mn into and out of tissues were primarily driven by slow rates of association and dissociation of Mn with tissue binding sites. However, Mn is known to show rapidly reversible binding in tissues. An updated Mn model for primates, following similar work with rats, was developed that included rapid association/dissociation processes with tissue Mn-binding sites, accumulation of free Mn in tissues after saturation of these Mn-binding sites and rapid rates of entry into tissues. This alternative structure successfully described Mn kinetics in tissues in monkeys exposed to Mn via various routes including oral, inhalation, and intraperitoneal, subcutaneous, or intravenous injection and whole-body kinetics and tissue levels in humans. An important contribution of this effort is showing that the extension of the rate constants for binding and cellular uptake established in the monkey were also able to describe kinetic data from humans. With a consistent model structure for monkeys and humans, there is less need to rely on cadaver data and whole-body tracer studies alone to calibrate a human model. The increased biological relevance of the Mn model structure and parameters provides greater confidence in applying the Mn PBPK models to risk assessment. This model is also well-suited to explicitly incorporate emerging information on the role of transporters in tissue disposition, intestinal uptake, and hepatobiliary excretion of Mn.
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Affiliation(s)
- Jerry L Campbell
- To whom correspondence should be addressed at Ramboll US Corporation, 3214 Charles B. Root Wynd, Suite 130, Raleigh, NC 27612, USA. E-mail:
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23
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Werner E, Gokhale A, Ackert M, Xu C, Wen Z, Roberts AM, Roberts BR, Vrailas-Mortimer A, Crocker A, Faundez V. The mitochondrial RNA granule modulates manganese-dependent cell toxicity. Mol Biol Cell 2022; 33:ar108. [PMID: 35921164 DOI: 10.1091/mbc.e22-03-0096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Prolonged manganese exposure causes manganism, a neurodegenerative movement disorder. The identity of adaptive and nonadaptive cellular processes targeted by manganese remains mostly unexplored. Here we study mechanisms engaged by manganese in genetic cellular models known to increase susceptibility to manganese exposure, the plasma membrane manganese efflux transporter SLC30A10 and the mitochondrial Parkinson's gene PARK2. We found that SLC30A10 and PARK2 mutations as well as manganese exposure compromised the mitochondrial RNA granule composition and function, resulting in disruption of mitochondrial transcript processing. These RNA granule defects led to impaired assembly and function of the mitochondrial respiratory chain. Notably, cells that survived a cytotoxic manganese challenge had impaired RNA granule function, thus suggesting that this granule phenotype was adaptive. CRISPR gene editing of subunits of the mitochondrial RNA granule, FASTKD2 or DHX30, as well as pharmacological inhibition of mitochondrial transcription-translation, were protective rather than deleterious for survival of cells acutely exposed to manganese. Similarly, adult Drosophila mutants with defects in the mitochondrial RNA granule component scully were safeguarded from manganese-induced mortality. We conclude that impairment of the mitochondrial RNA granule function is a protective mechanism for acute manganese toxicity.
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Affiliation(s)
- E Werner
- Department of Cell Biology, Emory University, Atlanta, GA 30322
| | - A Gokhale
- Department of Cell Biology, Emory University, Atlanta, GA 30322
| | - M Ackert
- School of Biological Sciences, Illinois State University, Normal, IL 617901
| | - C Xu
- Department of Psychiatry and Behavioral Sciences, Emory University, Atlanta, GA 30322
| | - Z Wen
- Department of Psychiatry and Behavioral Sciences, Emory University, Atlanta, GA 30322
| | - A M Roberts
- Department of Biochemistry, Emory University, Atlanta, GA 30322
| | - B R Roberts
- Department of Biochemistry, Emory University, Atlanta, GA 30322
| | - A Vrailas-Mortimer
- School of Biological Sciences, Illinois State University, Normal, IL 617901
| | - A Crocker
- Program in Neuroscience, Middlebury College, Middlebury, VT 05753
| | - V Faundez
- Department of Cell Biology, Emory University, Atlanta, GA 30322
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24
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Steimle BL, Bailey DK, Smith FM, Rosenblum SL, Kosman DJ. Calcium and the Ca-ATPase SPCA1 modulate plasma membrane abundance of ZIP8 and ZIP14 to regulate Mn(II) uptake in brain microvascular endothelial cells. J Biol Chem 2022; 298:102211. [PMID: 35787370 PMCID: PMC9352541 DOI: 10.1016/j.jbc.2022.102211] [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: 01/31/2022] [Revised: 06/09/2022] [Accepted: 06/19/2022] [Indexed: 11/12/2022] Open
Abstract
Manganese (II) accumulation in human brain microvascular endothelial cells is mediated by the metal-ion transporters ZRT IRT-like protein 8 (ZIP8) and ZRT IRT-like protein 14 (ZIP14). The plasma membrane occupancy of ZIP14, in particular, is increased in cells treated with Mn2+, lipopolysaccharide, or IL-6, but the mechanism of this regulation has not been elucidated. The calcium-transporting type 2C member 1 ATPase, SPCA1, is a Golgi-localized Ca2+-uptake transporter thought to support Golgi uptake of Mn2+ also. Here, we show using surface protein biotinylation, indirect immunofluorescence, and GFP-tagged proteins that cytoplasmic Ca2+ regulates ZIP8- and ZIP14-mediated manganese accumulation in human brain microvascular endothelial cells by increasing the plasma membrane localization of these transporters. We demonstrate that RNAi knockdown of SPCA1 expression results in an increase in cytoplasmic Ca2+ levels. In turn, we found increased cytoplasmic Ca2+ enhances membrane-localized ZIP8 and ZIP14 and a subsequent increase in 54Mn2+ uptake. Furthermore, overexpression of WT SPCA1 or a gain-of-function mutant resulted in a decrease in cytoplasmic Ca2+ and 54Mn2+ accumulation. While addition of Ca2+ positively regulated ZIP-mediated 54Mn2+ uptake, we show chelation of Ca2+ diminished manganese transport. In conclusion, the modulation of ZIP8 and ZIP14 membrane cycling by cytoplasmic calcium is a novel finding and provides new insight into the regulation of the uptake of Mn2+ and other divalent metal ions–mediated ZIP metal transporters.
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Affiliation(s)
- Brittany L Steimle
- Department of Biochemistry, State University of New York at Buffalo, Jacobs School of Medicine and Biomedical Sciences, 955 Main St. Buffalo, NY 14203, USA
| | - Danielle K Bailey
- Department of Biochemistry, State University of New York at Buffalo, Jacobs School of Medicine and Biomedical Sciences, 955 Main St. Buffalo, NY 14203, USA
| | - Frances M Smith
- Department of Biochemistry, State University of New York at Buffalo, Jacobs School of Medicine and Biomedical Sciences, 955 Main St. Buffalo, NY 14203, USA
| | - Shaina L Rosenblum
- Department of Biochemistry, State University of New York at Buffalo, Jacobs School of Medicine and Biomedical Sciences, 955 Main St. Buffalo, NY 14203, USA
| | - Daniel J Kosman
- Department of Biochemistry, State University of New York at Buffalo, Jacobs School of Medicine and Biomedical Sciences, 955 Main St. Buffalo, NY 14203, USA.
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25
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Seidelin AS, Nordestgaard BG, Tybjærg-Hansen A, Yaghootkar H, Stender S. A rare genetic variant in the manganese transporter SLC30A10 and elevated liver enzymes in the general population. Hepatol Int 2022; 16:702-711. [PMID: 35397106 DOI: 10.1007/s12072-022-10331-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 03/14/2022] [Indexed: 12/28/2022]
Abstract
BACKGROUND A genetic variant in the manganese transporter SLC30A10 (rs188273166, p.Thr95Ile) was associated with increased plasma alanine transaminase (ALT) in a recent genome-wide association study in the UK Biobank (UKB). The aims of the present study were to test the association of rs188273166 with ALT in an independent cohort, and to begin to assess the clinical, hepatic, and biochemical phenotypes associated with the variant. METHODS We included n = 334,886 white participants from UKB, including 14,462 with hepatic magnetic resonance imaging (MRI), and n = 113,612 individuals from the Copenhagen City Heart Study and the Copenhagen General Population Study combined. RESULTS Genotyping SLC30A10 p.Thr95Ile identified 816 heterozygotes in the UKB and 111 heterozygotes in the Copenhagen cohort. Compared to noncarriers, heterozygotes had 4 and 5 U/L higher levels of ALT in the UKB and Copenhagen cohort, respectively, and 3 U/L higher plasma aspartate transaminase and gamma-glutamyl transferase in the UKB. Heterozygotes also had higher corrected T1 on liver MRI, a marker of hepatic inflammation (p = 4 × 10-7), but no change in MRI-quantified steatosis (p = 0.57). Plasma manganese was within the normal range in nine heterozygotes that provided new blood samples. SLC30A10 p.Thr95Ile heterozygotes had an eightfold increased risk of biliary tract cancer in UKB (p = 4 × 10-7), but this association was not replicated in the Copenhagen cohort. CONCLUSIONS SLC30A10 p.Thr95Ile was associated with elevated liver enzymes in two large general population cohorts, and with MRI-quantified hepatic inflammation. A rare genetic variant (p.Thr95Ile) in the manganese transporter SLC30A10 is associated with elevated plasma alanine transaminase (ALT) and higher corrected T1 on liver MRI, markers of liver inflammation. These data support that the variant may increase the risk of liver disease.
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Affiliation(s)
- Anne-Sofie Seidelin
- Department of Clinical Biochemistry, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, 2100, Copenhagen, Denmark
| | - Børge Grønne Nordestgaard
- Department of Clinical Biochemistry, Herlev and Gentofte Hospital, Copenhagen University Hospital, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Anne Tybjærg-Hansen
- Department of Clinical Biochemistry, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, 2100, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Hanieh Yaghootkar
- Department of Life Sciences, Centre for Inflammation Research and Translational Medicine (CIRTM), Brunel University London, Uxbridge, UK
- Research Centre for Optimal Health, School of Life Sciences, University of Westminster, London, UK
| | - Stefan Stender
- Department of Clinical Biochemistry, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, 2100, Copenhagen, Denmark.
- Department of Clinical Biochemistry, Bispebjerg and Frederiksberg Hospital, Copenhagen University Hospital, Copenhagen, Denmark.
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26
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Rozenberg JM, Kamynina M, Sorokin M, Zolotovskaia M, Koroleva E, Kremenchutckaya K, Gudkov A, Buzdin A, Borisov N. The Role of the Metabolism of Zinc and Manganese Ions in Human Cancerogenesis. Biomedicines 2022; 10:biomedicines10051072. [PMID: 35625809 PMCID: PMC9139143 DOI: 10.3390/biomedicines10051072] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 04/30/2022] [Accepted: 05/03/2022] [Indexed: 12/14/2022] Open
Abstract
Metal ion homeostasis is fundamental for life. Specifically, transition metals iron, manganese and zinc play a pivotal role in mitochondrial metabolism and energy generation, anti-oxidation defense, transcriptional regulation and the immune response. The misregulation of expression or mutations in ion carriers and the corresponding changes in Mn2+ and Zn2+ levels suggest that these ions play a pivotal role in cancer progression. Moreover, coordinated changes in Mn2+ and Zn2+ ion carriers have been detected, suggesting that particular mechanisms influenced by both ions might be required for the growth of cancer cells, metastasis and immune evasion. Here, we present a review of zinc and manganese pathophysiology suggesting that these ions might cooperatively regulate cancerogenesis. Zn and Mn effects converge on mitochondria-induced apoptosis, transcriptional regulation and the cGAS-STING signaling pathway, mediating the immune response. Both Zn and Mn influence cancer progression and impact treatment efficacy in animal models and clinical trials. We predict that novel strategies targeting the regulation of both Zn and Mn in cancer will complement current therapeutic strategies.
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Affiliation(s)
- Julian Markovich Rozenberg
- Moscow Institute of Physics and Technology, National Research University, 141700 Moscow, Russia; (M.S.); (M.Z.); (E.K.); (K.K.); (A.B.); (N.B.)
- Correspondence:
| | - Margarita Kamynina
- Group of Experimental Biotherapy and Diagnostic, Institute for Regenerative Medicine, I.M. Sechenov First Moscow State Medical University, 119991 Moscow, Russia; (M.K.); (A.G.)
| | - Maksim Sorokin
- Moscow Institute of Physics and Technology, National Research University, 141700 Moscow, Russia; (M.S.); (M.Z.); (E.K.); (K.K.); (A.B.); (N.B.)
- Group of Experimental Biotherapy and Diagnostic, Institute for Regenerative Medicine, I.M. Sechenov First Moscow State Medical University, 119991 Moscow, Russia; (M.K.); (A.G.)
| | - Marianna Zolotovskaia
- Moscow Institute of Physics and Technology, National Research University, 141700 Moscow, Russia; (M.S.); (M.Z.); (E.K.); (K.K.); (A.B.); (N.B.)
- OmicsWay Corporation, Walnut, CA 91789, USA
| | - Elena Koroleva
- Moscow Institute of Physics and Technology, National Research University, 141700 Moscow, Russia; (M.S.); (M.Z.); (E.K.); (K.K.); (A.B.); (N.B.)
| | - Kristina Kremenchutckaya
- Moscow Institute of Physics and Technology, National Research University, 141700 Moscow, Russia; (M.S.); (M.Z.); (E.K.); (K.K.); (A.B.); (N.B.)
| | - Alexander Gudkov
- Group of Experimental Biotherapy and Diagnostic, Institute for Regenerative Medicine, I.M. Sechenov First Moscow State Medical University, 119991 Moscow, Russia; (M.K.); (A.G.)
| | - Anton Buzdin
- Moscow Institute of Physics and Technology, National Research University, 141700 Moscow, Russia; (M.S.); (M.Z.); (E.K.); (K.K.); (A.B.); (N.B.)
- Group of Experimental Biotherapy and Diagnostic, Institute for Regenerative Medicine, I.M. Sechenov First Moscow State Medical University, 119991 Moscow, Russia; (M.K.); (A.G.)
- OmicsWay Corporation, Walnut, CA 91789, USA
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
- Oncobox Ltd., 121205 Moscow, Russia
| | - Nicolas Borisov
- Moscow Institute of Physics and Technology, National Research University, 141700 Moscow, Russia; (M.S.); (M.Z.); (E.K.); (K.K.); (A.B.); (N.B.)
- OmicsWay Corporation, Walnut, CA 91789, USA
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27
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The cytokines interleukin-6 and interferon-α induce distinct microglia phenotypes. J Neuroinflammation 2022; 19:96. [PMID: 35429976 PMCID: PMC9013466 DOI: 10.1186/s12974-022-02441-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 03/24/2022] [Indexed: 12/12/2022] Open
Abstract
Background Elevated production of the cytokines interleukin (IL)-6 or interferon (IFN)-α in the central nervous system (CNS) is implicated in the pathogenesis of neurological diseases such as neuromyelitis optica spectrum disorders or cerebral interferonopathies, respectively. Transgenic mice with CNS-targeted chronic production of IL-6 (GFAP-IL6) or IFN-α (GFAP-IFN) recapitulate important clinical and pathological features of these human diseases. The activation of microglia is a prominent manifestation found both in the human diseases and in the transgenic mice, yet little is known about how this contributes to disease pathology. Methods Here, we used a combination of ex vivo and in situ techniques to characterize the molecular, cellular and transcriptomic phenotypes of microglia in GFAP-IL6 versus GFAP-IFN mice. In addition, a transcriptomic meta-analysis was performed to compare the microglia response from GFAP-IL6 and GFAP-IFN mice to the response of microglia in a range of neurodegenerative and neuroinflammatory disorders. Results We demonstrated that microglia show stimulus-specific responses to IL-6 versus IFN-α in the brain resulting in unique and extensive molecular and cellular adaptations. In GFAP-IL6 mice, microglia proliferated, had shortened, less branched processes and elicited transcriptomic and molecular changes associated with phagocytosis and lipid processing. In comparison, microglia in the brain of GFAP-IFN mice exhibited increased proliferation and apoptosis, had larger, hyper-ramified processes and showed transcriptomic and surface marker changes associated with antigen presentation and antiviral response. Further, a transcriptomic meta-analysis revealed that IL-6 and IFN-α both contribute to the formation of a core microglia response in animal models of neurodegenerative and neuroinflammatory disorders, such as Alzheimer’s disease, tauopathy, multiple sclerosis and lipopolysaccharide-induced endotoxemia. Conclusions Our findings demonstrate that microglia responses to IL-6 and IFN-α are highly stimulus-specific, wide-ranging and give rise to divergent phenotypes that modulate microglia responses in neuroinflammatory and neurodegenerative diseases. Supplementary Information The online version contains supplementary material available at 10.1186/s12974-022-02441-x.
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28
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Jackson TW, Baars O, Belcher SM. Gestational Cd Exposure in the CD-1 Mouse Sex-Specifically Disrupts Essential Metal Ion Homeostasis. Toxicol Sci 2022; 187:254-266. [PMID: 35212737 PMCID: PMC9154225 DOI: 10.1093/toxsci/kfac027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
In CD-1 mice, gestational-only exposure to cadmium (Cd) causes female-specific hepatic insulin resistance, metabolic disruption, and obesity. To evaluate whether sex differences in uptake and changes in essential metal concentrations contribute to metabolic outcomes, placental and liver Cd and essential metal concentrations were quantified in male and female offspring perinatally exposed to 500 ppb CdCl2. Exposure resulted in increased maternal liver Cd+2 concentrations (364 µg/kg) similar to concentrations found in non-occupationally exposed human liver. At gestational day (GD) 18, placental Cd and manganese concentrations were significantly increased in exposed males and females, and zinc was significantly decreased in females. Placental efficiency was significantly decreased in GD18-exposed males. Increases in hepatic Cd concentrations and a transient prenatal increase in zinc were observed in exposed female liver. Fetal and adult liver iron concentrations were decreased in both sexes, and decreases in hepatic zinc, iron, and manganese were observed in exposed females. Analysis of GD18 placental and liver metallothionein mRNA expression revealed significant Cd-induced upregulation of placental metallothionein in both sexes, and a significant decrease in fetal hepatic metallothionein in exposed females. In placenta, expression of metal ion transporters responsible for metal ion uptake was increased in exposed females. In liver of exposed adult female offspring, expression of the divalent cation importer (Slc39a14/Zip14) decreased, whereas expression of the primary exporter (Slc30a10/ZnT10) increased. These findings demonstrate that Cd can preferentially cross the female placenta, accumulate in the liver, and cause lifelong dysregulation of metal ion concentrations associated with metabolic disruption.
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Affiliation(s)
- Thomas W Jackson
- Center for Human Health and the Environment, Department of Biological Sciences, North Carolina State University, 127 David Clark Labs Campus Box 7617, Raleigh, North Carolina 27695, USA
| | - Oliver Baars
- Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - Scott M Belcher
- To whom correspondence should be addressed at Center for Human Health and the Environment, Department of Biological Sciences, North Carolina State University, 127 David Clark Labs Campus Box 7617, Raleigh, North Carolina 27695, USA. Tel.: (919) 513-1214. E-mail:
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29
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Lei MY, Cong L, Liu ZQ, Liu ZF, Ma Z, Liu K, Li J, Deng Y, Liu W, Xu B. Resveratrol reduces DRP1-mediated mitochondrial dysfunction via the SIRT1-PGC1α signaling pathway in manganese-induced nerve damage in mice. ENVIRONMENTAL TOXICOLOGY 2022; 37:282-298. [PMID: 34738708 DOI: 10.1002/tox.23397] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 10/22/2021] [Accepted: 10/23/2021] [Indexed: 06/13/2023]
Abstract
Excessive manganese (Mn) exposure can cause nerve damage and mitochondrial dysfunction, which may involve defects in mitochondrial dynamics. Resveratrol (RSV) exerts a wide range of beneficial effects via activation of sirtuin 1 (SIRT1) and thus may positively impact Mn-induced mitochondrial damage through the regulation of peroxisome proliferator-activated receptor-gamma coactivator 1-alpha (PGC-1α) by SIRT1. In this study, we investigated the molecular mechanisms by which RSV alleviates the nerve injury and mitochondrial fragmentation caused by Mn in C57 BL/6 mice. Our results demonstrated that RSV activated the deacetylase activity of SIRT1 and protected against the surge of mitochondrial reactive oxygen species, the loss of mitochondrial membrane potential, and the attenuation of ATP caused by Mn. RSV, therefore, inhibits mitochondrial fragmentation and safeguards neural cells. Increased deacetylase activity led to a reduction in the acetylation of PGC-1α, which directly regulates DRP1 expression by binding to the DRP1 promoter. The resultant attenuation of DRP1-mediated mitochondrial fragmentation in RSV-pretreated mice was abolished by the addition of the SIRT1 inhibitor EX527. Taken together, these findings indicate that RSV alleviates Mn-induced mitochondrial dysfunction mediated by DRP1 by modulating the SIRT1/PGC-1α signaling pathway.
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Affiliation(s)
- Meng-Yu Lei
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China
| | - Lin Cong
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China
| | - Zhi-Qi Liu
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China
| | - Zhuo-Fan Liu
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China
| | - Zhuo Ma
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China
| | - Kuan Liu
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China
| | - Jing Li
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China
| | - Yu Deng
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China
| | - Wei Liu
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China
| | - Bin Xu
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China
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Gurol KC, Aschner M, Smith DR, Mukhopadhyay S. Role of excretion in manganese homeostasis and neurotoxicity: a historical perspective. Am J Physiol Gastrointest Liver Physiol 2022; 322:G79-G92. [PMID: 34786983 PMCID: PMC8714252 DOI: 10.1152/ajpgi.00299.2021] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The essential metal manganese (Mn) induces incurable neurotoxicity at elevated levels that manifests as parkinsonism in adults and fine motor and executive function deficits in children. Studies on Mn neurotoxicity have largely focused on the role and mechanisms of disease induced by elevated Mn exposure from occupational or environmental sources. In contrast, the critical role of excretion in regulating Mn homeostasis and neurotoxicity has received less attention although 1) studies on Mn excretion date back to the 1920s; 2) elegant radiotracer Mn excretion assays in the 1940s to 1960s established the routes of Mn excretion; and 3) studies on patients with liver cirrhosis in the 1990s to 2000s identified an association between decreased Mn excretion and the risk of developing Mn-induced parkinsonism in the absence of elevated Mn exposure. Notably, the last few years have seen renewed interest in Mn excretion largely driven by the discovery that hereditary Mn neurotoxicity due to mutations in SLC30A10 or SLC39A14 is caused, at least in part, by deficits in Mn excretion. Quite remarkably, some of the recent results on SLC30A10 and SLC39A14 provide explanations for observations made ∼40-50 years ago. The goal of the current review is to integrate the historic studies on Mn excretion with more contemporary recent work and provide a comprehensive state-of-the-art overview of Mn excretion and its role in regulating Mn homeostasis and neurotoxicity. A related goal is to discuss the significance of some of the foundational studies on Mn excretion so that these highly consequential earlier studies remain influential in the field.
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Affiliation(s)
- Kerem C. Gurol
- 1Division of Pharmacology & Toxicology, College of Pharmacy, and Institute for Neuroscience, The University of Texas at Austin, Austin, Texas
| | - Michael Aschner
- 2Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York
| | - Donald R. Smith
- 3Department of Microbiology and Environmental Toxicology, University of California, Santa Cruz, California
| | - Somshuvra Mukhopadhyay
- 1Division of Pharmacology & Toxicology, College of Pharmacy, and Institute for Neuroscience, The University of Texas at Austin, Austin, Texas
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Fujishiro H, Kambe T. Manganese transport in mammals by zinc transporter family proteins, ZNT and ZIP. J Pharmacol Sci 2021; 148:125-133. [PMID: 34924116 DOI: 10.1016/j.jphs.2021.10.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 10/07/2021] [Accepted: 10/07/2021] [Indexed: 12/14/2022] Open
Abstract
Manganese (Mn) is an essential trace element required for various biological processes. However, excess Mn causes serious side effects in humans, including parkinsonism. Thus, elucidation of Mn homeostasis at the systemic, cellular, and molecular levels is important. Many metal transporters and channels can be involved in the transport and homeostasis of Mn, and an increasing body of evidence shows that several zinc (Zn) transporters belonging to the ZIP and ZNT families, specifically, ZNT10, ZIP8, and ZIP14, play pivotal roles in Mn metabolism. Mutations in the genes encoding these transporter proteins are associated with congenital disorders related to dysregulated Mn homeostasis in humans. Moreover, single nucleotide polymorphisms of ZIP8 are associated with multiple clinical phenotypes. In this review, we discuss the recent literature on the structural and biochemical features of ZNT10, ZIP8, and ZIP14, including transport mechanisms, regulation of expression, and pathophysiological functions. Because a disturbance in Mn homeostasis is closely associated with a variety of phenotypes and risk of human diseases, these transporters constitute a significant target for drug development. An understanding of the roles of these key transporters in Mn metabolism should provide new insights into pharmacological applications of their inhibitors and enhancers in human diseases.
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Affiliation(s)
- Hitomi Fujishiro
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima, 770-8514, Japan.
| | - Taiho Kambe
- Division of Integrated Life Science, Graduate School of Biostudies, Kyoto University, Kyoto, 606-8502, Japan.
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Budinger D, Barral S, Soo AKS, Kurian MA. The role of manganese dysregulation in neurological disease: emerging evidence. Lancet Neurol 2021; 20:956-968. [PMID: 34687639 DOI: 10.1016/s1474-4422(21)00238-6] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 07/09/2021] [Accepted: 07/09/2021] [Indexed: 12/14/2022]
Abstract
Manganese is an essential trace metal. The dysregulation of manganese seen in a broad spectrum of neurological disorders reflects its importance in brain development and key neurophysiological processes. Historically, the observation of acquired manganism in miners and people who misuse drugs provided early evidence of brain toxicity related to manganese exposure. The identification of inherited manganese transportopathies, which cause neurodevelopmental and neurodegenerative syndromes, further corroborates the neurotoxic potential of this element. Moreover, manganese dyshomoeostasis is also implicated in Parkinson's disease and other neurodegenerative conditions, such as Alzheimer's disease and Huntington's disease. Ongoing and future research will facilitate the development of better targeted therapeutical strategies than are currently available for manganese-associated neurological disorders.
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Affiliation(s)
- Dimitri Budinger
- Developmental Neurosciences, Zayed Centre for Research into Rare Disease in Children, University College London, London, UK
| | - Serena Barral
- Developmental Neurosciences, Zayed Centre for Research into Rare Disease in Children, University College London, London, UK
| | - Audrey K S Soo
- Developmental Neurosciences, Zayed Centre for Research into Rare Disease in Children, University College London, London, UK; Department of Neurology, Great Ormond Street Hospital, London, UK
| | - Manju A Kurian
- Developmental Neurosciences, Zayed Centre for Research into Rare Disease in Children, University College London, London, UK; Department of Neurology, Great Ormond Street Hospital, London, UK.
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Up-regulation of the manganese transporter SLC30A10 by hypoxia-inducible factors defines a homeostatic response to manganese toxicity. Proc Natl Acad Sci U S A 2021; 118:2107673118. [PMID: 34446561 DOI: 10.1073/pnas.2107673118] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Manganese (Mn) is an essential metal that induces incurable parkinsonism at elevated levels. However, unlike other essential metals, mechanisms that regulate mammalian Mn homeostasis are poorly understood, which has limited therapeutic development. Here, we discovered that the exposure of mice to a translationally relevant oral Mn regimen up-regulated expression of SLC30A10, a critical Mn efflux transporter, in the liver and intestines. Mechanistic studies in cell culture, including primary human hepatocytes, revealed that 1) elevated Mn transcriptionally up-regulated SLC30A10, 2) a hypoxia response element in the SLC30A10 promoter was necessary, 3) the transcriptional activities of hypoxia-inducible factor (HIF) 1 or HIF2 were required and sufficient for the SLC30A10 response, 4) elevated Mn activated HIF1/HIF2 by blocking the prolyl hydroxylation of HIF proteins necessary for their degradation, and 5) blocking the Mn-induced up-regulation of SLC30A10 increased intracellular Mn levels and enhanced Mn toxicity. Finally, prolyl hydroxylase inhibitors that stabilize HIF proteins and are in advanced clinical trials for other diseases reduced intracellular Mn levels and afforded cellular protection against Mn toxicity and also ameliorated the in vivo Mn-induced neuromotor deficits in mice. These findings define a fundamental homeostatic protective response to Mn toxicity-elevated Mn levels activate HIF1 and HIF2 to up-regulate SLC30A10, which in turn reduces cellular and organismal Mn levels, and further indicate that it may be possible to repurpose prolyl hydroxylase inhibitors for the management of Mn neurotoxicity.
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Manganese systemic distribution is modulated in vivo during tumor progression and affects tumor cell migration and invasion in vitro. Sci Rep 2021; 11:15833. [PMID: 34349175 PMCID: PMC8338990 DOI: 10.1038/s41598-021-95190-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 07/22/2021] [Indexed: 11/23/2022] Open
Abstract
Metastatic disease remains the leading cause of death in cancer and understanding the mechanisms involved in tumor progression continues to be challenging. This work investigates the role of manganese in tumor progression in an in vivo model of tumor growth. Our data revealed that manganese accumulates within primary tumors and secondary organs as manganese-rich niches. Consequences of such phenomenon were investigated, and we verified that short-term changes in manganese alter cell surface molecules syndecan-1 and β1-integrin, enhance collective cell migration and invasive behavior. Long-term increased levels of manganese do not affect cell growth and viability but enhance cell migration. We also observed that manganese is secreted from tumor cells in extracellular vesicles, rather than in soluble form. Finally, we describe exogenous glycosaminoglycans that counteract manganese effects on tumor cell behavior. In conclusion, our analyses describe manganese as a central element in tumor progression by accumulating in Mn-rich niches in vivo, as well as in vitro, affecting migration and extracellular vesicle secretion in vitro. Manganese accumulation in specific regions of the organism may not be a common ground for all cancers, nevertheless, it represents a new aspect of tumor progression that deserves special attention.
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Ghaisas S, Harischandra DS, Palanisamy B, Proctor A, Jin H, Dutta S, Sarkar S, Langley M, Zenitsky G, Anantharam V, Kanthasamy A, Phillips GJ, Kanthasamy A. Chronic Manganese Exposure and the Enteric Nervous System: An in Vitro and Mouse in Vivo Study. ENVIRONMENTAL HEALTH PERSPECTIVES 2021; 129:87005. [PMID: 34410835 PMCID: PMC8375672 DOI: 10.1289/ehp7877] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
BACKGROUND Chronic environmental exposure to manganese (Mn) can cause debilitating damage to the central nervous system. However, its potential toxic effects on the enteric nervous system (ENS) have yet to be assessed. OBJECTIVE We examined the effect of Mn on the ENS using both cell and animal models. METHOD Rat enteric glial cells (EGCs) and mouse primary enteric cultures were exposed to increasing concentrations of Mn and cell viability and mitochondrial health were assessed using various morphological and functional assays. C57BL/6 mice were exposed daily to a sublethal dose of Mn (15mg/kg/d) for 30 d. Gut peristalsis, enteric inflammation, gut microbiome profile, and fecal metabolite composition were assessed at the end of exposure. RESULTS EGC mitochondria were highly susceptible to Mn neurotoxicity, as evidenced by lower mitochondrial mass, adenosine triphosphate-linked respiration, and aconitase activity as well as higher mitochondrial superoxide, upon Mn exposure. Minor differences were seen in the mouse model: specifically, longer intestinal transit times and higher levels of colonic inflammation. CONCLUSION Based on our findings from this study, Mn preferentially induced mitochondrial dysfunction in a rat EGC line and in vivo resulted in inflammation in the ENS. https://doi.org/10.1289/EHP7877.
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Affiliation(s)
- Shivani Ghaisas
- Department of Biomedical Sciences, Iowa Center for Advanced Neurotoxicology, Iowa State University, Ames, Iowa, USA
| | - Dilshan S Harischandra
- Department of Biomedical Sciences, Iowa Center for Advanced Neurotoxicology, Iowa State University, Ames, Iowa, USA
| | - Bharathi Palanisamy
- Department of Biomedical Sciences, Iowa Center for Advanced Neurotoxicology, Iowa State University, Ames, Iowa, USA
| | - Alexandra Proctor
- Department of Veterinary Microbiology & Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
| | - Huajun Jin
- Department of Biomedical Sciences, Iowa Center for Advanced Neurotoxicology, Iowa State University, Ames, Iowa, USA
| | - Somak Dutta
- Department of Statistics, Iowa State University, Ames, Iowa, USA
| | - Souvarish Sarkar
- Department of Biomedical Sciences, Iowa Center for Advanced Neurotoxicology, Iowa State University, Ames, Iowa, USA
| | - Monica Langley
- Department of Biomedical Sciences, Iowa Center for Advanced Neurotoxicology, Iowa State University, Ames, Iowa, USA
| | - Gary Zenitsky
- Department of Biomedical Sciences, Iowa Center for Advanced Neurotoxicology, Iowa State University, Ames, Iowa, USA
| | - Vellareddy Anantharam
- Department of Biomedical Sciences, Iowa Center for Advanced Neurotoxicology, Iowa State University, Ames, Iowa, USA
| | - Arthi Kanthasamy
- Department of Biomedical Sciences, Iowa Center for Advanced Neurotoxicology, Iowa State University, Ames, Iowa, USA
| | - Gregory J Phillips
- Department of Veterinary Microbiology & Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
| | - Anumantha Kanthasamy
- Department of Biomedical Sciences, Iowa Center for Advanced Neurotoxicology, Iowa State University, Ames, Iowa, USA
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Ward LD, Tu HC, Quenneville CB, Tsour S, Flynn-Carroll AO, Parker MM, Deaton AM, Haslett PAJ, Lotta LA, Verweij N, Ferreira MAR, Baras A, Hinkle G, Nioi P. GWAS of serum ALT and AST reveals an association of SLC30A10 Thr95Ile with hypermanganesemia symptoms. Nat Commun 2021; 12:4571. [PMID: 34315874 PMCID: PMC8316433 DOI: 10.1038/s41467-021-24563-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 06/23/2021] [Indexed: 02/07/2023] Open
Abstract
Understanding mechanisms of hepatocellular damage may lead to new treatments for liver disease, and genome-wide association studies (GWAS) of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) serum activities have proven useful for investigating liver biology. Here we report 100 loci associating with both enzymes, using GWAS across 411,048 subjects in the UK Biobank. The rare missense variant SLC30A10 Thr95Ile (rs188273166) associates with the largest elevation of both enzymes, and this association replicates in the DiscovEHR study. SLC30A10 excretes manganese from the liver to the bile duct, and rare homozygous loss of function causes the syndrome hypermanganesemia with dystonia-1 (HMNDYT1) which involves cirrhosis. Consistent with hematological symptoms of hypermanganesemia, SLC30A10 Thr95Ile carriers have increased hematocrit and risk of iron deficiency anemia. Carriers also have increased risk of extrahepatic bile duct cancer. These results suggest that genetic variation in SLC30A10 adversely affects more individuals than patients with diagnosed HMNDYT1.
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Affiliation(s)
- Lucas D. Ward
- grid.417897.40000 0004 0506 3000Alnylam Pharmaceuticals, Cambridge, MA USA
| | - Ho-Chou Tu
- grid.417897.40000 0004 0506 3000Alnylam Pharmaceuticals, Cambridge, MA USA
| | | | - Shira Tsour
- grid.417897.40000 0004 0506 3000Alnylam Pharmaceuticals, Cambridge, MA USA
| | | | - Margaret M. Parker
- grid.417897.40000 0004 0506 3000Alnylam Pharmaceuticals, Cambridge, MA USA
| | - Aimee M. Deaton
- grid.417897.40000 0004 0506 3000Alnylam Pharmaceuticals, Cambridge, MA USA
| | | | - Luca A. Lotta
- grid.418961.30000 0004 0472 2713Regeneron Genetics Center, Tarrytown, NY USA
| | - Niek Verweij
- grid.418961.30000 0004 0472 2713Regeneron Genetics Center, Tarrytown, NY USA
| | | | | | | | - Aris Baras
- grid.418961.30000 0004 0472 2713Regeneron Genetics Center, Tarrytown, NY USA
| | - Gregory Hinkle
- grid.417897.40000 0004 0506 3000Alnylam Pharmaceuticals, Cambridge, MA USA
| | - Paul Nioi
- grid.417897.40000 0004 0506 3000Alnylam Pharmaceuticals, Cambridge, MA USA
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37
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Wang X, An P, Gu Z, Luo Y, Luo J. Mitochondrial Metal Ion Transport in Cell Metabolism and Disease. Int J Mol Sci 2021; 22:ijms22147525. [PMID: 34299144 PMCID: PMC8305404 DOI: 10.3390/ijms22147525] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/06/2021] [Accepted: 07/13/2021] [Indexed: 12/19/2022] Open
Abstract
Mitochondria are vital to life and provide biological energy for other organelles and cell physiological processes. On the mitochondrial double layer membrane, there are a variety of channels and transporters to transport different metal ions, such as Ca2+, K+, Na+, Mg2+, Zn2+ and Fe2+/Fe3+. Emerging evidence in recent years has shown that the metal ion transport is essential for mitochondrial function and cellular metabolism, including oxidative phosphorylation (OXPHOS), ATP production, mitochondrial integrity, mitochondrial volume, enzyme activity, signal transduction, proliferation and apoptosis. The homeostasis of mitochondrial metal ions plays an important role in maintaining mitochondria and cell functions and regulating multiple diseases. In particular, channels and transporters for transporting mitochondrial metal ions are very critical, which can be used as potential targets to treat neurodegeneration, cardiovascular diseases, cancer, diabetes and other metabolic diseases. This review summarizes the current research on several types of mitochondrial metal ion channels/transporters and their functions in cell metabolism and diseases, providing strong evidence and therapeutic strategies for further insights into related diseases.
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Affiliation(s)
- Xuan Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100193, China; (X.W.); (P.A.)
| | - Peng An
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100193, China; (X.W.); (P.A.)
| | - Zhenglong Gu
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, USA;
| | - Yongting Luo
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100193, China; (X.W.); (P.A.)
- Correspondence: (Y.L.); (J.L.)
| | - Junjie Luo
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100193, China; (X.W.); (P.A.)
- Correspondence: (Y.L.); (J.L.)
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38
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Gandhi D, Rudrashetti AP, Rajasekaran S. The impact of environmental and occupational exposures of manganese on pulmonary, hepatic, and renal functions. J Appl Toxicol 2021; 42:103-129. [PMID: 34237170 DOI: 10.1002/jat.4214] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 06/14/2021] [Accepted: 06/14/2021] [Indexed: 12/15/2022]
Abstract
Manganese (Mn) is an essential trace element for humans, but long-term environmental or occupational exposures can lead to numerous health problems. Although many studies have identified an association between Mn exposures and neurological abnormalities, emerging data suggest that occupationally and environmentally relevant levels of Mn may also be linked to multiple organ dysfunction in the general population. In this regard, many experimental and clinical studies provide support for a causal link between Mn exposure and structural and functional changes that are responsible for organ dysfunction in major organs like lung, liver, and kidney. The underlying mechanisms suggested to Mn toxicity include altered activities of the components of intracellular signaling cascades, oxidative stress, apoptosis, affected cell cycle regulation, autophagy, angiogenesis, and an inflammatory response. We further discussed the sources and possible mechanisms of Mn absorption and distribution in different organs. Finally, treatment strategies available for treating Mn toxicity as well as directions for future studies were discussed.
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Affiliation(s)
- Deepa Gandhi
- Department of Biochemistry, ICMR-National Institute for Research in Environmental Health, Bhopal, India
| | | | - Subbiah Rajasekaran
- Department of Biochemistry, ICMR-National Institute for Research in Environmental Health, Bhopal, India
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Prajapati M, Conboy HL, Hojyo S, Fukada T, Budnik B, Bartnikas TB. Biliary excretion of excess iron in mice requires hepatocyte iron import by Slc39a14. J Biol Chem 2021; 297:100835. [PMID: 34051234 PMCID: PMC8214222 DOI: 10.1016/j.jbc.2021.100835] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 05/13/2021] [Accepted: 05/25/2021] [Indexed: 12/19/2022] Open
Abstract
Iron is essential for erythropoiesis and other biological processes, but is toxic in excess. Dietary absorption of iron is a highly regulated process and is a major determinant of body iron levels. Iron excretion, however, is considered a passive, unregulated process, and the underlying pathways are unknown. Here we investigated the role of metal transporters SLC39A14 and SLC30A10 in biliary iron excretion. While SLC39A14 imports manganese into the liver and other organs under physiological conditions, it imports iron under conditions of iron excess. SLC30A10 exports manganese from hepatocytes into the bile. We hypothesized that biliary excretion of excess iron would be impaired by SLC39A14 and SLC30A10 deficiency. We therefore analyzed biliary iron excretion in Slc39a14-and Slc30a10-deficient mice raised on iron-sufficient and -rich diets. Bile was collected surgically from the mice, then analyzed with nonheme iron assays, mass spectrometry, ELISAs, and an electrophoretic assay for iron-loaded ferritin. Our results support a model in which biliary excretion of excess iron requires iron import into hepatocytes by SLC39A14, followed by iron export into the bile predominantly as ferritin, with iron export occurring independently of SLC30A10. To our knowledge, this is the first report of a molecular determinant of mammalian iron excretion and can serve as basis for future investigations into mechanisms of iron excretion and relevance to iron homeostasis.
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Affiliation(s)
- Milankumar Prajapati
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA
| | - Heather L Conboy
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA
| | - Shintaro Hojyo
- Division of Molecular Psychoimmunology, Institute for Genetic Medicine, Graduate School of Medicine, Hokkaido University, Hokkaido, Japan
| | - Toshiyuki Fukada
- Department of Molecular and Cellular Physiology, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima, Japan
| | - Bogdan Budnik
- Mass Spectrometry and Proteomics Resource Laboratory, Faculty of Arts and Sciences, Division of Science, Harvard University, Cambridge, Massachusetts, USA
| | - Thomas B Bartnikas
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA.
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Sarkar S. Mechanism of Gene-Environment Interactions Driving Glial Activation in Parkinson's Diseases. Curr Environ Health Rep 2021; 8:203-211. [PMID: 34043217 DOI: 10.1007/s40572-021-00320-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/21/2021] [Indexed: 11/24/2022]
Abstract
PURPOSE OF REVIEW Parkinson's disease (PD) is the most prevalent motor disorder and is characterized by loss of dopaminergic neurons in the substantia nigra pars compacta (SNpc) region of the brain. Though the pathology of PD is well established, the cause of this neuronal loss is not well understood. Approximately 90% of PD cases are sporadic, and the environment plays a significant role in disease pathogenesis. The etiology of PD is highly complex, with neuroinflammation being one of the most critical factors implicated in PD. However, the signaling mechanisms underlying neuroinflammation and its interaction with environmental factors are unclear. RECENT FINDINGS Astroglia and microglia are the two principal cells that play an essential role in maintaining neuronal health in many ways, including through immunological means. Exposure to environmental stressors from various sources affects these glial cells leading to chronic and sustained inflammation. Recent epidemiological studies have identified an interaction among environmental factors and glial genes in Parkinson's disease. Mechanistic studies have shown that exposure to pesticides like rotenone and paraquat, neurotoxic metals like manganese and lead, and even diesel exhaust fumes induce glial activation by regulating various key inflammatory pathways, including the inflammasomes, NOX pathways, and others. This review aims to discuss the recent advances in understanding the mechanism of glial induction in response to environmental stressors and discuss the potential role of gene-environment interaction in driving glial activation.
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Affiliation(s)
- Souvarish Sarkar
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA, 02115, USA.
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41
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Kulshreshtha D, Ganguly J, Jog M. Manganese and Movement Disorders: A Review. J Mov Disord 2021; 14:93-102. [PMID: 33819420 PMCID: PMC8175808 DOI: 10.14802/jmd.20123] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 11/19/2020] [Accepted: 12/18/2020] [Indexed: 12/21/2022] Open
Abstract
Scientific and technological advances achieved with industrial expansion have led to an ever-increasing demand for heavy metals. This demand has, in turn, led to increased contamination of soil, water and air with these metals. Chronic exposure to metals may be detrimental not only to occupational workers but also to the nonoccupational population exposed to these metals. Manganese (Mn), a commonly used heavy metal, is an essential cofactor for many enzymatic processes that drive biological functions. However, it is also a potential source of neurotoxicity, particularly in the field of movement disorders. The typical manifestation of Mn overexposure is parkinsonism, which may be difficult to differentiate from the more common idiopathic Parkinson's disease. In addition to environmental exposure to Mn, other potential etiologies causing hypermanganesemia include systemic health conditions, total parenteral nutrition and genetic mutations causing Mn dyshomeostasis. In this review, we critically analyze Mn and discuss its sources of exposure, pathophysiology and clinical manifestations. We have highlighted the global public health impact of Mn and emphasize that movement disorder specialists should record a detailed social and occupational history to ensure that a toxic etiology is not misdiagnosed as a neurodegenerative disease. In the absence of a definite therapeutic option, early diagnosis and timely institution of preventive measures are the keys to managing its toxic effects.
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Affiliation(s)
- Dinkar Kulshreshtha
- Movement Disorder Centre, London Health Sciences Centre, The University of Western Ontario, Ontario, Canada
| | - Jacky Ganguly
- Movement Disorder Centre, London Health Sciences Centre, The University of Western Ontario, Ontario, Canada
| | - Mandar Jog
- Movement Disorder Centre, London Health Sciences Centre, The University of Western Ontario, Ontario, Canada
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42
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Tinkov AA, Paoliello MMB, Mazilina AN, Skalny AV, Martins AC, Voskresenskaya ON, Aaseth J, Santamaria A, Notova SV, Tsatsakis A, Lee E, Bowman AB, Aschner M. Molecular Targets of Manganese-Induced Neurotoxicity: A Five-Year Update. Int J Mol Sci 2021; 22:4646. [PMID: 33925013 PMCID: PMC8124173 DOI: 10.3390/ijms22094646] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 04/22/2021] [Accepted: 04/25/2021] [Indexed: 12/16/2022] Open
Abstract
Understanding of the immediate mechanisms of Mn-induced neurotoxicity is rapidly evolving. We seek to provide a summary of recent findings in the field, with an emphasis to clarify existing gaps and future research directions. We provide, here, a brief review of pertinent discoveries related to Mn-induced neurotoxicity research from the last five years. Significant progress was achieved in understanding the role of Mn transporters, such as SLC39A14, SLC39A8, and SLC30A10, in the regulation of systemic and brain manganese handling. Genetic analysis identified multiple metabolic pathways that could be considered as Mn neurotoxicity targets, including oxidative stress, endoplasmic reticulum stress, apoptosis, neuroinflammation, cell signaling pathways, and interference with neurotransmitter metabolism, to name a few. Recent findings have also demonstrated the impact of Mn exposure on transcriptional regulation of these pathways. There is a significant role of autophagy as a protective mechanism against cytotoxic Mn neurotoxicity, yet also a role for Mn to induce autophagic flux itself and autophagic dysfunction under conditions of decreased Mn bioavailability. This ambivalent role may be at the crossroad of mitochondrial dysfunction, endoplasmic reticulum stress, and apoptosis. Yet very recent evidence suggests Mn can have toxic impacts below the no observed adverse effect of Mn-induced mitochondrial dysfunction. The impact of Mn exposure on supramolecular complexes SNARE and NLRP3 inflammasome greatly contributes to Mn-induced synaptic dysfunction and neuroinflammation, respectively. The aforementioned effects might be at least partially mediated by the impact of Mn on α-synuclein accumulation. In addition to Mn-induced synaptic dysfunction, impaired neurotransmission is shown to be mediated by the effects of Mn on neurotransmitter systems and their complex interplay. Although multiple novel mechanisms have been highlighted, additional studies are required to identify the critical targets of Mn-induced neurotoxicity.
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Affiliation(s)
- Alexey A. Tinkov
- Laboratory of Ecobiomonitoring and Quality Control, Yaroslavl State University, 150003 Yaroslavl, Russia;
- Laboratory of Molecular Dietetics, Department of Neurological Diseases and Neurosurgery, Department of Analytical and Forensic Toxicology, IM Sechenov First Moscow State Medical University (Sechenov University), 119435 Moscow, Russia; (O.N.V.); (J.A.); (A.T.)
| | - Monica M. B. Paoliello
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; (M.M.B.P.); (A.C.M.)
- Graduate Program in Public Health, Center of Health Sciences, State University of Londrina, Londrina, PR 86038-350, Brazil
| | - Aksana N. Mazilina
- Department of Medical Elementology, Peoples’ Friendship University of Russia (RUDN University), 117198 Moscow, Russia;
| | - Anatoly V. Skalny
- World-Class Research Center “Digital Biodesign and Personalized Healthcare”, IM Sechenov First Moscow State Medical University (Sechenov University), 119435 Moscow, Russia;
- Laboratory of Medical Elementology, KG Razumovsky Moscow State University of Technologies and Management, 109004 Moscow, Russia
| | - Airton C. Martins
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; (M.M.B.P.); (A.C.M.)
| | - Olga N. Voskresenskaya
- Laboratory of Molecular Dietetics, Department of Neurological Diseases and Neurosurgery, Department of Analytical and Forensic Toxicology, IM Sechenov First Moscow State Medical University (Sechenov University), 119435 Moscow, Russia; (O.N.V.); (J.A.); (A.T.)
| | - Jan Aaseth
- Laboratory of Molecular Dietetics, Department of Neurological Diseases and Neurosurgery, Department of Analytical and Forensic Toxicology, IM Sechenov First Moscow State Medical University (Sechenov University), 119435 Moscow, Russia; (O.N.V.); (J.A.); (A.T.)
- Research Department, Innlandet Hospital Trust, P.O. Box 104, 2381 Brumunddal, Norway
| | - Abel Santamaria
- Laboratorio de Aminoácidos Excitadores, Instituto Nacional de Neurología y Neurocirugía, SSA, Mexico City 14269, Mexico;
| | - Svetlana V. Notova
- Institute of Bioelementology, Orenburg State University, 460018 Orenburg, Russia;
- Federal Research Centre of Biological Systems and Agro-technologies of the Russian Academy of Sciences, 460000 Orenburg, Russia
| | - Aristides Tsatsakis
- Laboratory of Molecular Dietetics, Department of Neurological Diseases and Neurosurgery, Department of Analytical and Forensic Toxicology, IM Sechenov First Moscow State Medical University (Sechenov University), 119435 Moscow, Russia; (O.N.V.); (J.A.); (A.T.)
- Laboratory of Toxicology, Medical School, University of Crete, Voutes, 700 13 Heraklion, Greece
| | - Eunsook Lee
- Department of Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA;
| | - Aaron B. Bowman
- School of Health Sciences, Purdue University, West Lafayette, IN 47906, USA;
| | - Michael Aschner
- Laboratory of Molecular Dietetics, Department of Neurological Diseases and Neurosurgery, Department of Analytical and Forensic Toxicology, IM Sechenov First Moscow State Medical University (Sechenov University), 119435 Moscow, Russia; (O.N.V.); (J.A.); (A.T.)
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; (M.M.B.P.); (A.C.M.)
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Lei Y, Tang J, He X, Shi H, Zeng Y, Sun H, Wang K. In Situ Modulating DNAzyme Activity and Internalization Behavior with Acid-Initiated Reconfigurable DNA Nanodevice for Activatable Theranostic. Anal Chem 2021; 93:5629-5634. [PMID: 33779138 DOI: 10.1021/acs.analchem.1c00426] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
DNAzyme-mediated gene silencing was still challenged by off-target toxicity. In this study, we developed a split DNAzyme-based nanodevice (sDz-ND) that leveraged acidic tumor microenvironments to drive in situ assembly, thus modulating internalization behavior and silencing activity of DNAzymes. sDz-ND consisted of two different modules, which functionalized with split DNAzyme fragments, respectively. At psychological pH (∼7.4), the two modules were monodispersed, showing cleavage anergy and quenched fluorescence. At pH 6.3, the separated modules could cross-link with each other to form integrated sDz-ND, resulting activation of theranostic function. Meanwhile, the increased particle size and acquired multivalent effect favored 2.1-fold enhanced binding ability, which further facilitated rapid endocytosis of sDz-ND into target cancer cells, then allowing DNAzyme mediated gene silencing. The strategy provides a promising and general concept for precise tumor imaging and gene therapy.
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Affiliation(s)
- Yanli Lei
- Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, 410114, People's Republic of China.,State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Changsha, 410082, People's Republic of China
| | - Jinlu Tang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Changsha, 410082, People's Republic of China
| | - Xiaoxiao He
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Changsha, 410082, People's Republic of China
| | - Hui Shi
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Changsha, 410082, People's Republic of China
| | - Yu Zeng
- Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, 410114, People's Republic of China
| | - Haiyan Sun
- Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, 410114, People's Republic of China
| | - Kemin Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Changsha, 410082, People's Republic of China
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Prajapati M, Pettiglio MA, Conboy HL, Mercadante CJ, Hojyo S, Fukada T, Bartnikas TB. Characterization of in vitro models of SLC30A10 deficiency. Biometals 2021; 34:573-588. [PMID: 33713241 DOI: 10.1007/s10534-021-00296-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 02/26/2021] [Indexed: 11/25/2022]
Abstract
Manganese (Mn), an essential metal, can be toxic at elevated levels. In 2012, the first inherited cause of Mn excess was reported in patients with mutations in SLC30A10, a Mn efflux transporter. To explore the function of SLC30A10 in vitro, the current study used CRISPR/Cas9 gene editing to develop a stable SLC30A10 mutant Hep3B hepatoma cell line and collagenase perfusion in live mice to isolate primary hepatocytes deficient in Slc30a10. We also compared phenotypes of primary vs. non-primary cell lines to determine if they both serve as reliable in vitro models for the known physiological roles of SLC30A10. Mutant SLC30A10 Hep3B cells had increased Mn levels and decreased viability when exposed to excess Mn. Transport studies indicated a reduction of 54Mn import and export in mutant cells. While impaired 54Mn export was hypothesized given the essential role for SLC30A10 in cellular Mn export, impaired 54Mn import was unexpected. Whole genome sequencing did not identify any additional mutations in known Mn transporters in the mutant Hep3B mutant cell line. We then evaluated 54Mn transport in primary hepatocytes cultures isolated from genetically altered mice with varying liver Mn levels. Based on results from these experiments, we suggest that the effects of SLC30A10 deficiency on Mn homeostasis can be interrogated in vitro but only in specific types of cell lines.
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Affiliation(s)
- Milankumar Prajapati
- Department of Pathology and Laboratory Medicine, The Warren Alpert Medical School, Brown University, Providence, RI, 02912, USA.
| | - Michael A Pettiglio
- Department of Pathology and Laboratory Medicine, The Warren Alpert Medical School, Brown University, Providence, RI, 02912, USA.,Vor Biopharma, Cambridge, MA, USA
| | - Heather L Conboy
- Department of Pathology and Laboratory Medicine, The Warren Alpert Medical School, Brown University, Providence, RI, 02912, USA
| | - Courtney J Mercadante
- Department of Pathology and Laboratory Medicine, The Warren Alpert Medical School, Brown University, Providence, RI, 02912, USA.,Sanofi-Bioverativ, Waltham, MA, USA
| | - Shintaro Hojyo
- Deutsches Rheuma-Forschungszentrum Berlin, 10117, Berlin, Germany.,Division of Molecular Psychoimmunology, Institute for Genetic Medicine, Hokkaido University, Sapporo, Hokkaido, 060-0815, Japan
| | - Toshiyuki Fukada
- Molecular and Cellular Physiology, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima, 770-8514, Japan
| | - Thomas B Bartnikas
- Department of Pathology and Laboratory Medicine, The Warren Alpert Medical School, Brown University, Providence, RI, 02912, USA
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45
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Zhang L, Xiao S, Kang X, Sun T, Zhou C, Xu Z, Du M, Zhang Y, Wang G, Liu Y, Zhang D, Gong M. Metabolic Conversion and Removal of Manganese Ferrite Nanoparticles in RAW264.7 Cells and Induced Alteration of Metal Transporter Gene Expression. Int J Nanomedicine 2021; 16:1709-1724. [PMID: 33688187 PMCID: PMC7936572 DOI: 10.2147/ijn.s289707] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 02/10/2021] [Indexed: 12/26/2022] Open
Abstract
Background Manganese Ferrite Nanoparticles (Mn-IONPs) are widely used in biomedical field and their cytotoxicity has been initially explored, but the mechanism remains obscure. The nano-bio interactions are believed to be crucial for cytotoxicity mechanism, while little data have been acquired. Methods Mn-IONPs were synthesized by thermal decomposition of acetylacetonate precursor. After physicochemical characterization, we analyzed the metabolic conversion and removal of Mn-IONPs in RAW264.7 cells by Prussian blue staining, TEM, HRTEM and elemental quantitative analysis, followed by gene expression evaluation using quantitative RT-PCR. Results Mn-IONPs were successfully synthesized. Both the uptake and cytotoxicity of Mn-IONPs on RAW264.7 cells were time- and dose-dependent. After internalized, Mn-IONPs were passed to daughter cells with passages on. Meanwhile, Mn-IONPs were exocytosed and digested to metal ions and further excreted out, resulted in the labeling rate and ions contents decreased gradually. As ion influx related genes, the expressions of ZIP14, IRP2, FtH and DMT1 were suppressed within 24 hours but overexpressed to a plateau at the 48th hour in a dose-dependent manner. At the 72nd hour, ZIP14 and DMT1 mRNA levels decreased toward normal, while IRP2 and FtH kept up-regulated. As efflux related genes, FPN, SLC30A10 and Hamp2 genes were up-regulated within 24–72 hours; SPCA1 was suppressed at the 24th and 72nd hour, while overexpressed at the 48th hour. All the efflux related genes’ mRNA had a dose-dependent increasing manner at the corresponding time points. Conclusion Mn-IONPs showed time- and dose-dependent cytotoxicity and cell labeling rate in RAW264.7 cells. Accompanying with the intracellular catabolic breakdown and exocytosis of Mn-IONPs, RAW264.7 cells also secreted and re-uptook manganese and iron ions to maintain intracellular homeostasis in the succeeding passages. And the metabolic conversion of Mn-IONPs in RAW264.7 cells can affect the expression of ZIP14, DMT1, FPN, SLC30A10, IRP2, FtH, Hamp2 and SPCA1 genes.
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Affiliation(s)
- Liang Zhang
- Department of Radiology, Xinqiao Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Shilin Xiao
- Department of Radiology, Xinqiao Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Xun Kang
- Department of Radiology, Xinqiao Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Tao Sun
- Department of Radiology, Xinqiao Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Chunyu Zhou
- Department of Radiology, Xinqiao Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Zhongsheng Xu
- Department of Radiology, Xinqiao Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Mengmeng Du
- Department of Radiology, Xinqiao Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Ya Zhang
- Department of Radiology, Xinqiao Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Guangxian Wang
- Department of Radiology, Xinqiao Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Yun Liu
- Department of Radiology, Xinqiao Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Dong Zhang
- Department of Radiology, Xinqiao Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Mingfu Gong
- Department of Radiology, Xinqiao Hospital, Army Medical University, Chongqing, People's Republic of China
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Qi C, He J, Fu LH, He T, Blum NT, Yao X, Lin J, Huang P. Tumor-Specific Activatable Nanocarriers with Gas-Generation and Signal Amplification Capabilities for Tumor Theranostics. ACS NANO 2021; 15:1627-1639. [PMID: 33356128 DOI: 10.1021/acsnano.0c09223] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Multifunctional nanotheranostics are typically designed by integrating multiple functional components. This approach not only complicates the preparation process but also hinders any bioapplication due to the potential toxic effects when each component is metabolized. Here, we report a safe, biodegradable, and tumor-specific nanocarrier that, once activated by the acidic tumor microenvironment (TME), has diagnostic and therapeutic functions suitable for tumor theranostics. Our nanocarrier is composed of biomineralized manganese carbonate (BMC) nanoparticles (NPs) that readily decompose to release Mn2+ ions and CO2 gas in the acidic TME due to its intrinsic pH-dependent solubility. Mn2+ and CO2 release permits magnetic resonance and ultrasound imaging of tumors, respectively. These NPs can be loaded with the anticancer drug doxorubicin (DOX): BMC-DOX has high tumor inhibition effects both in vitro and in vivo due to combined Mn2+-mediated chemodynamic therapy and DOX-induced chemotherapy. This tumor-specific actuating nanocarrier might be a promising candidate for clinical translation.
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Affiliation(s)
- Chao Qi
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
| | - Jin He
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
| | - Lian-Hua Fu
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
| | - Ting He
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
| | - Nicholas Thomas Blum
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
| | - Xikuang Yao
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
| | - Jing Lin
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
| | - Peng Huang
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
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47
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Li S, De La Cruz J, Hutchens S, Mukhopadhyay S, Criss ZK, Aita R, Pellon-Cardenas O, Hur J, Soteropoulos P, Husain S, Dhawan P, Verlinden L, Carmeliet G, Fleet JC, Shroyer NF, Verzi MP, Christakos S. Analysis of 1,25-Dihydroxyvitamin D 3 Genomic Action Reveals Calcium-Regulating and Calcium-Independent Effects in Mouse Intestine and Human Enteroids. Mol Cell Biol 2020; 41:e00372-20. [PMID: 33139494 PMCID: PMC7849401 DOI: 10.1128/mcb.00372-20] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 10/05/2020] [Accepted: 10/24/2020] [Indexed: 01/27/2023] Open
Abstract
Although vitamin D is critical for the function of the intestine, most studies have focused on the duodenum. We show that transgenic expression of the vitamin D receptor (VDR) only in the distal intestine of VDR null mice (KO/TG mice) results in the normalization of serum calcium and rescue of rickets. Although it had been suggested that calcium transport in the distal intestine involves a paracellular process, we found that the 1,25-dihydroxyvitamin D3 [1,25(OH)2D3]-activated genes in the proximal intestine associated with active calcium transport (Trpv6, S100g, and Atp2b1) are also induced by 1,25(OH)2D3 in the distal intestine of KO/TG mice. In addition, Slc30a10, encoding a manganese efflux transporter, was one of the genes most induced by 1,25(OH)2D3 in both proximal and distal intestine. Both villus and crypt were found to express Vdr and VDR target genes. RNA sequence (RNA-seq) analysis of human enteroids indicated that the effects of 1,25(OH)2D3 observed in mice are conserved in humans. Using Slc30a10-/- mice, a loss of cortical bone and a marked decrease in S100g and Trpv6 in the intestine was observed. Our findings suggest an interrelationship between vitamin D and intestinal Mn efflux and indicate the importance of distal intestinal segments to vitamin D action.
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Affiliation(s)
- Shanshan Li
- Department of Microbiology, Biochemistry and Molecular Genetics, Rutgers, The State University of New Jersey, New Jersey Medical School, Newark, New Jersey, USA
| | - Jessica De La Cruz
- Department of Microbiology, Biochemistry and Molecular Genetics, Rutgers, The State University of New Jersey, New Jersey Medical School, Newark, New Jersey, USA
| | - Steven Hutchens
- Division of Pharmacology and Toxicology, College of Pharmacy, Institute for Cellular and Molecular Biology and Institute for Neuroscience, The University of Texas at Austin, Austin, Texas, USA
| | - Somshuvra Mukhopadhyay
- Division of Pharmacology and Toxicology, College of Pharmacy, Institute for Cellular and Molecular Biology and Institute for Neuroscience, The University of Texas at Austin, Austin, Texas, USA
| | - Zachary K Criss
- Integrative Molecular and Biomedical Sciences Graduate Program, Division of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Rohit Aita
- Department of Genetics, Rutgers University, New Brunswick, New Jersey, USA
| | | | - Joseph Hur
- Department of Genetics, Rutgers University, New Brunswick, New Jersey, USA
| | - Patricia Soteropoulos
- Department of Microbiology, Biochemistry and Molecular Genetics, Rutgers, The State University of New Jersey, New Jersey Medical School, Newark, New Jersey, USA
- Genomics Center, Rutgers, The State University of New Jersey, New Jersey Medical School, Newark, New Jersey, USA
| | - Seema Husain
- Department of Microbiology, Biochemistry and Molecular Genetics, Rutgers, The State University of New Jersey, New Jersey Medical School, Newark, New Jersey, USA
- Genomics Center, Rutgers, The State University of New Jersey, New Jersey Medical School, Newark, New Jersey, USA
| | - Puneet Dhawan
- Department of Microbiology, Biochemistry and Molecular Genetics, Rutgers, The State University of New Jersey, New Jersey Medical School, Newark, New Jersey, USA
- Genomics Center, Rutgers, The State University of New Jersey, New Jersey Medical School, Newark, New Jersey, USA
| | - Lieve Verlinden
- Laboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases and Metabolism, Leuven, Belgium
| | - Geert Carmeliet
- Laboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases and Metabolism, Leuven, Belgium
| | - James C Fleet
- Department of Nutrition Science, Purdue University, West Lafayette, Indiana, USA
| | - Noah F Shroyer
- Integrative Molecular and Biomedical Sciences Graduate Program, Division of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Michael P Verzi
- Department of Genetics, Rutgers University, New Brunswick, New Jersey, USA
| | - Sylvia Christakos
- Department of Microbiology, Biochemistry and Molecular Genetics, Rutgers, The State University of New Jersey, New Jersey Medical School, Newark, New Jersey, USA
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Ijomone OM, Ifenatuoha CW, Aluko OM, Ijomone OK, Aschner M. The aging brain: impact of heavy metal neurotoxicity. Crit Rev Toxicol 2020; 50:801-814. [PMID: 33210961 DOI: 10.1080/10408444.2020.1838441] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The aging process is accompanied by critical changes in cellular and molecular functions, which upset the homeostatic balance in the central nervous system. Accumulation of metals renders the brain susceptible to neurotoxic insults by mechanisms such as mitochondrial dysfunction, neuronal calcium-ion dyshomeostasis, buildup of damaged molecules, compromised DNA repair, reduction in neurogenesis, and impaired energy metabolism. These hallmarks have been identified to be responsible for neuronal injuries, resulting in several neurological disorders. Various studies have shown solid associations between metal accumulation, abnormal protein expressions, and pathogenesis of neurodegenerative diseases such as Parkinson's disease, Alzheimer's disease, Huntington's disease, and Amyotrophic lateral sclerosis. This review highlights metals (such as manganese, zinc, iron, copper, and nickel) for their accumulation, and consequences in the development of neurological disorders, in relation to the aging brain.
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Affiliation(s)
- Omamuyovwi M Ijomone
- The Neuro-Lab, School of Health and Health Technology, Federal University of Technology, Akure, Nigeria.,Department of Human Anatomy, School of Health and Health Technology, Federal University of Technology, Akure, Nigeria
| | - Chibuzor W Ifenatuoha
- The Neuro-Lab, School of Health and Health Technology, Federal University of Technology, Akure, Nigeria
| | - Oritoke M Aluko
- The Neuro-Lab, School of Health and Health Technology, Federal University of Technology, Akure, Nigeria.,Department of Physiology, School of Health and Health Technology, Federal University of Technology, Akure, Nigeria
| | - Olayemi K Ijomone
- The Neuro-Lab, School of Health and Health Technology, Federal University of Technology, Akure, Nigeria.,Department of Anatomy, University of Medical Sciences, Ondo, Nigeria
| | - Michael Aschner
- Departments of Molecular Pharmacology, Pediatrics and Neuroscience, Albert Einstein College of Medicine, Bronx, NY, USA
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A missense variant in SLC39A8 confers risk for Crohn's disease by disrupting manganese homeostasis and intestinal barrier integrity. Proc Natl Acad Sci U S A 2020; 117:28930-28938. [PMID: 33139556 PMCID: PMC7682327 DOI: 10.1073/pnas.2014742117] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
SLC39A8 A391T exhibits remarkable pleiotropic effects on multiple conditions, including cardiovascular diseases, Parkinson’s disease, and Crohn’s disease. However, how this single coding variant impacts such a wide range of pathologies has not been investigated. We generated Slc39a8 A391T knockin mice and show that they exhibit severe Mn deficiency in the colon, and impaired intestinal barrier integrity due to glycoprotein barrier structure defects, leading to indolent inflammation that can prime further inflammation driven by epithelial injury. Thus, we highlight the importance of Mn in gut homeostasis, and mechanistically unravel how A391T impacts intestinal barrier integrity. Common genetic variants interact with environmental factors to impact risk of heritable diseases. A notable example of this is a single-nucleotide variant in the Solute Carrier Family 39 Member 8 (SLC39A8)geneencoding the missense variant A391T, which is associated with a variety of traits ranging from Parkinson’s disease and neuropsychiatric disease to cardiovascular and metabolic diseases and Crohn’s disease. The remarkable extent of pleiotropy exhibited by SLC39A8 A391T raises key questions regarding how a single coding variant can contribute to this diversity of clinical outcomes and what is the mechanistic basis for this pleiotropy. Here, we generate a murine model for the Slc39a8 A391T allele and demonstrate that these mice exhibit Mn deficiency in the colon associated with impaired intestinal barrier function and epithelial glycocalyx disruption. Consequently, Slc39a8 A391T mice exhibit increased sensitivity to epithelial injury and pathological inflammation in the colon. Taken together, our results link a genetic variant with a dietary trace element to shed light on a tissue-specific mechanism of disease risk based on impaired intestinal barrier integrity.
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50
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Iron and manganese transport in mammalian systems. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2020; 1868:118890. [PMID: 33091506 DOI: 10.1016/j.bbamcr.2020.118890] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 09/24/2020] [Accepted: 10/08/2020] [Indexed: 12/23/2022]
Abstract
Studies in recent years have significantly expanded, refined, and redefined the repertoire of transporters and other proteins involved in iron and manganese (Mn) transport and homeostasis. In this review, we discuss highlights of the recent literature on iron and Mn transport, focusing on the roles of membrane transporters and related proteins. Studies are considered from the vantage point of main organs, tissues, and cell types that actively control whole-body iron or Mn homeostasis, with emphasis on studies in which in vivo metal transport was measured directly or implicated by using knockout mouse models. Overviews of whole-body and cellular iron and Mn homeostasis are also provided to give physiological context for key transporters and to highlight how they participate in the uptake, intracellular trafficking, and efflux of each metal. Important similarities and differences in iron and Mn transport are noted, and future research opportunities and challenges are identified.
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