1
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Qiu N, Pechalrieu D, Abegg D, Adibekian A. Chemoproteomic Profiling Maps Zinc-Dependent Cysteine Reactivity. Chem Res Toxicol 2024; 37:620-632. [PMID: 38484110 DOI: 10.1021/acs.chemrestox.3c00416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
As a vital micronutrient, zinc is integral to the structure, function, and signaling networks of diverse proteins. Dysregulated zinc levels, due to either excess intake or deficiency, are associated with a spectrum of health disorders. In this context, understanding zinc-regulated biological processes at the molecular level holds significant relevance to public health and clinical practice. Identifying and characterizing zinc-regulated proteins in their diverse proteoforms, however, remain a difficult task in advancing zinc biology. Herein, we address this challenge by developing a quantitative chemical proteomics platform that globally profiles the reactivities of proteinaceous cysteines upon cellular zinc depletion. Exploiting a protein-conjugated resin for the selective removal of Zn2+ from culture media, we identify an array of zinc-sensitive cysteines on proteins with diverse functions based on their increased reactivity upon zinc depletion. Notably, we find that zinc regulates the enzymatic activities, post-translational modifications, and subcellular distributions of selected target proteins such as peroxiredoxin 6 (PRDX6), platelet-activating factor acetylhydrolase IB subunit alpha1 (PAFAH1B3), and phosphoglycerate kinase (PGK1).
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Affiliation(s)
- Nan Qiu
- Department of Chemistry, University of Illinois Chicago, 845 W Taylor St., Chicago, Illinois 60607, United States
- Skaggs Doctoral Program in the Chemical and Biological Sciences, Scripps Research, 10550 N Torrey Pines Rd, La Jolla, California 92037, United States
| | - Dany Pechalrieu
- Department of Chemistry, University of Illinois Chicago, 845 W Taylor St., Chicago, Illinois 60607, United States
| | - Daniel Abegg
- Department of Chemistry, University of Illinois Chicago, 845 W Taylor St., Chicago, Illinois 60607, United States
| | - Alexander Adibekian
- Department of Chemistry, University of Illinois Chicago, 845 W Taylor St., Chicago, Illinois 60607, United States
- Department of Pharmaceutical Sciences, University of Illinois Chicago, 833 S Wood St., Chicago, Illinois 60612, United States
- Department of Biochemistry and Molecular Genetics, University of Illinois Chicago, 900 S Ashland Ave., Chicago, Illinois 60607, United States
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2
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Shen J, Wu G, Pierce BS, Tsai AL, Zhou M. Free ferrous ions sustain activity of mammalian stearoyl-CoA desaturase-1. J Biol Chem 2023:104897. [PMID: 37290533 PMCID: PMC10359943 DOI: 10.1016/j.jbc.2023.104897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 05/26/2023] [Accepted: 06/05/2023] [Indexed: 06/10/2023] Open
Abstract
Mammalian stearoyl-CoA desaturase-1 (SCD1) introduces a double-bond to a saturated long-chain fatty acid in a reaction catalyzed by a diiron center. The diiron center is well-coordinated by conserved histidine residues and is thought to remain with the enzyme. However, we find here that SCD1 progressively loses its activity during catalysis and becomes fully inactive after nine turnovers. Further studies show that the inactivation of SCD1 is due to the loss of an iron (Fe) ion in the diiron center, and that the addition of free ferrous ions (Fe2+) sustains the enzymatic activity. Using SCD1 labeled with Fe isotope, we further show that free Fe2+ is incorporated into the diiron center only during catalysis. We also discover that the diiron center in SCD1 has prominent electron paramagnetic resonance signals in its diferric state, indicative of distinct coupling between the two ferric ions. These results reveal that the diiron center in SCD1 is structurally dynamic during catalysis and that labile Fe2+ in cells could regulate SCD1 activity, and hence lipid metabolism.
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Affiliation(s)
- Jiemin Shen
- Verna and Marrs McLean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Gang Wu
- Department of Internal Medicine, University of Texas McGovern Medical School, Houston, TX 77030, USA.
| | - Brad S Pierce
- Department of Chemistry & Biochemistry, University of Alabama, Tuscaloosa, AL 35487, USA
| | - Ah-Lim Tsai
- Department of Internal Medicine, University of Texas McGovern Medical School, Houston, TX 77030, USA.
| | - Ming Zhou
- Verna and Marrs McLean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX 77030, USA.
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3
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Shen J, Wu G, Pierce BS, Tsai AL, Zhou M. Free ferrous ions sustain activity of mammalian stearoyl-CoA desaturase-1. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.17.533000. [PMID: 36993326 PMCID: PMC10055294 DOI: 10.1101/2023.03.17.533000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Mammalian stearoyl-CoA desaturase-1 (SCD1) introduces a double-bond to a saturated long-chain fatty acid and the reaction is catalyzed by a diiron center, which is well-coordinated by conserved histidine residues and is thought to remain with enzyme. However, we find that SCD1 progressively loses its activity during catalysis and becomes fully inactive after nine turnovers. Further studies show that the inactivation of SCD1 is due to the loss of an iron (Fe) ion in the diiron center, and that the addition of free ferrous ions (Fe 2+ ) sustains the enzymatic activity. Using SCD1 labeled with Fe isotope, we further show that free Fe 2+ is incorporated into the diiron center only during catalysis. We also discover that the diiron center in SCD1 has prominent electron paramagnetic resonance signals in its diferric state, indicative of distinct coupling between the two ferric ions. These results reveal that the diiron center in SCD1 is structurally dynamic during catalysis and that labile Fe 2+ in cells could regulate SCD1 activity, and hence lipid metabolism.
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Affiliation(s)
- Jiemin Shen
- Verna and Marrs McLean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Gang Wu
- Department of Internal Medicine, University of Texas McGovern Medical School, Houston, TX 77030, USA
| | - Brad S. Pierce
- Department of Chemistry & Biochemistry, University of Alabama, Tuscaloosa, AL 35487, USA
| | - Ah-Lim Tsai
- Department of Internal Medicine, University of Texas McGovern Medical School, Houston, TX 77030, USA
| | - Ming Zhou
- Verna and Marrs McLean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX 77030, USA
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4
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Rosen T, Nolan EM. S100A12 promotes Mn(II) binding to pneumococcal PsaA and staphylococcal MntC by Zn(II) sequestration. J Inorg Biochem 2022; 233:111862. [PMID: 35660119 PMCID: PMC9254665 DOI: 10.1016/j.jinorgbio.2022.111862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 05/02/2022] [Accepted: 05/08/2022] [Indexed: 10/18/2022]
Abstract
Human S100A12 (calgranulin C, EN-RAGE) is a Zn(II)-sequestering host-defense protein that contributes to the metal-withholding innate immune response against microbial pathogens. S100A12 coordinates Zn(II) ions at two His3Asp sites with high affinity. A similar His3Asp site found in calprotectin (S100A8/S100A9, calgranulin A/B), a closely related human S100 protein, can sequester divalent metal ions from the solute-binding proteins (SBPs) pneumococcal PsaA (pneumococcal surface protein A) and staphylococcal MntC (manganese transport protein C). Both SBPs are components of Mn(II) transporters and capture extracellular Mn(II) ions for subsequent delivery into the bacterial cytosol. Nevertheless, PsaA and MntC exhibit a thermodynamic preference for Zn(II) over Mn(II), and Zn(II) binding can interfere with Mn(II) acquisition. In this work, we have used a biotinylated variant of S100A12 to show that S100A12 can sequester Zn(II) ions from PsaA and MntC. Moreover, electron paramagnetic resonance (EPR) spectroscopy indicates that by sequestering Zn(II) from Zn(II)-bound PsaA and MntC, S100A12 promotes Mn(II) binding to the SBPs. These results inform the function of S100A12 in Zn(II) sequestration, and further suggest that Zn(II)-sequestering S100 proteins may inadvertently protect bacterial pathogens during infection.
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5
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Edamatsu H. Zinc ions negatively regulate proapoptotic signaling in cells expressing oncogenic mutant Ras. Biometals 2022; 35:349-362. [PMID: 35212861 DOI: 10.1007/s10534-022-00376-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 02/16/2022] [Indexed: 12/13/2022]
Abstract
Mutational activation of the Ras family of proto-oncogenes promotes cell survival and proliferation. Studies using cells cultured in vitro have shown that ectopic expression of constitutively active Ras suppresses apoptosis induced by serum deprivation. However, in some cellular contexts, constitutively active Ras exerts the opposite effects, including apoptosis of serum-starved embryonic fibroblasts. Such observations first came over two decades ago, but the molecular mechanisms by which mutant Ras increases the susceptibility of cells to serum deprivation leading to apoptosis are still not fully understood. To revisit this issue, I investigate the effects of serum depletion and mutant Ras expression on intracellular signaling and transcriptome of cells carrying an inducible allele of constitutively active mutant Hras (HrasG12V). I identify zinc ions (Zn2+) as a serum factor that suppresses proapoptotic signaling in cells expressing HrasG12V. Mechanistically, HrasG12V expression along with Zn2+ deficiency activates c-Jun N-terminal kinase (JNK) and p38 mitogen-activated protein kinase (MAPK), which are required for caspase-3 activation involved in the induction of cell death. Transcriptome analyses suggest that HrasG12V induces the unfolded protein response (UPR). Further analyses of intracellular signaling biomolecules related to the UPR indicate that HrasG12V activates inositol-requiring protein 1 (IRE1), which synergizes with Zn2+ deficiency to activate JNK and p38 MAPK signaling. These results provide insights into a role of Zn2+ that counteracts proapoptotic signaling activated by mutationally activated Ras.
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Affiliation(s)
- Hironori Edamatsu
- Department of Biology, Juntendo University School of Medicine, 1-1 Hirakagakuendai, Inzai, Chiba, 270-1695, Japan.
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6
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Ghosh P, Pramanik K, Paul S, Dey D, Kumar Chandra S, Kanti Mukhopadhyay S, Chandra Murmu N, Banerjee P. Zn
2+
Recognition for Pathogenesis of
Pick's Disease
via a Luminescent Test Kit. ChemistrySelect 2021. [DOI: 10.1002/slct.202100908] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Pritam Ghosh
- Surface Engineering & Tribology Group CSIR-Central Mechanical Engineering Research Institute Mahatma Gandhi Avenue, City Center Durgapur 713209 West Bengal India
| | - Koushik Pramanik
- Department of Chemistry Visva-Bharati University Santiniketan 731235 India
| | - Suparna Paul
- Surface Engineering & Tribology Group CSIR-Central Mechanical Engineering Research Institute Mahatma Gandhi Avenue, City Center Durgapur 713209 West Bengal India
- Academy of Scientific and Innovative Research (AcSIR) AcSIR Headquarters CSIR-HRDC Campus Postal Staff College Area, Sector 19, Kamla Nehru Nagar Ghaziabad 201002 Uttar Pradesh India
| | - Debanjan Dey
- Surface Engineering & Tribology Group CSIR-Central Mechanical Engineering Research Institute Mahatma Gandhi Avenue, City Center Durgapur 713209 West Bengal India
- Academy of Scientific and Innovative Research (AcSIR) AcSIR Headquarters CSIR-HRDC Campus Postal Staff College Area, Sector 19, Kamla Nehru Nagar Ghaziabad 201002 Uttar Pradesh India
| | | | | | - Naresh Chandra Murmu
- Surface Engineering & Tribology Group CSIR-Central Mechanical Engineering Research Institute Mahatma Gandhi Avenue, City Center Durgapur 713209 West Bengal India
- Academy of Scientific and Innovative Research (AcSIR) AcSIR Headquarters CSIR-HRDC Campus Postal Staff College Area, Sector 19, Kamla Nehru Nagar Ghaziabad 201002 Uttar Pradesh India
| | - Priyabrata Banerjee
- Surface Engineering & Tribology Group CSIR-Central Mechanical Engineering Research Institute Mahatma Gandhi Avenue, City Center Durgapur 713209 West Bengal India
- Academy of Scientific and Innovative Research (AcSIR) AcSIR Headquarters CSIR-HRDC Campus Postal Staff College Area, Sector 19, Kamla Nehru Nagar Ghaziabad 201002 Uttar Pradesh India
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7
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Zhang C, Sui D, Zhang T, Hu J. Molecular Basis of Zinc-Dependent Endocytosis of Human ZIP4 Transceptor. Cell Rep 2021; 31:107582. [PMID: 32348750 PMCID: PMC7661102 DOI: 10.1016/j.celrep.2020.107582] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 02/03/2020] [Accepted: 04/07/2020] [Indexed: 12/05/2022] Open
Abstract
Nutrient transporters can be rapidly removed from the cell surface via substrate-stimulated endocytosis as a way to control nutrient influx, but the molecular underpinnings are not well understood. In this work, we focus on zinc-dependent endocytosis of human ZIP4 (hZIP4), a zinc transporter that is essential for dietary zinc uptake. Structure-guided mutagenesis and internalization assay reveal that hZIP4 per se acts as the exclusive zinc sensor, with the transport site’s being responsible for zinc sensing. In an effort of seeking sorting signal, a scan of the longest cytosolic loop (L2) leads to identification of a conserved Leu-Gln-Leu motif that is essential for endocytosis. Partial proteolysis of purified hZIP4 demonstrates a structural coupling between the transport site and the L2 upon zinc binding, which supports a working model of how zinc ions at physiological concentration trigger a conformation-dependent endocytosis of the zinc transporter. This work provides a paradigm on post-translational regulation of nutrient transporters. Cell surface expression of ZIP4, a transporter for intestinal zinc uptake, is regulated by zinc availability. Zhang et al. report that human ZIP4 acts as the exclusive zinc sensor in initiating the zinc-dependent endocytosis, and a cytosolic motif is essential for sorting signal formation, indicating that ZIP4 is a transceptor.
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Affiliation(s)
- Chi Zhang
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI 48824, USA
| | - Dexin Sui
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI 48824, USA
| | - Tuo Zhang
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI 48824, USA
| | - Jian Hu
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI 48824, USA; Department of Chemistry, Michigan State University, East Lansing, MI 48824, USA.
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8
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Pratt EPS, Damon LJ, Anson KJ, Palmer AE. Tools and techniques for illuminating the cell biology of zinc. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2020; 1868:118865. [PMID: 32980354 DOI: 10.1016/j.bbamcr.2020.118865] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 09/13/2020] [Accepted: 09/15/2020] [Indexed: 12/19/2022]
Abstract
Zinc (Zn2+) is an essential micronutrient that is required for a wide variety of cellular processes. Tools and methods have been instrumental in revealing the myriad roles of Zn2+ in cells. This review highlights recent developments fluorescent sensors to measure the labile Zn2+ pool, chelators to manipulate Zn2+ availability, and fluorescent tools and proteomics approaches for monitoring Zn2+-binding proteins in cells. Finally, we close with some highlights on the role of Zn2+ in regulating cell function and in cell signaling.
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Affiliation(s)
- Evan P S Pratt
- Department of Biochemistry and BioFrontiers Institute, University of Colorado Boulder, 3415 Colorado Ave, Boulder, CO 80303, United States of America
| | - Leah J Damon
- Department of Biochemistry and BioFrontiers Institute, University of Colorado Boulder, 3415 Colorado Ave, Boulder, CO 80303, United States of America
| | - Kelsie J Anson
- Department of Biochemistry and BioFrontiers Institute, University of Colorado Boulder, 3415 Colorado Ave, Boulder, CO 80303, United States of America
| | - Amy E Palmer
- Department of Biochemistry and BioFrontiers Institute, University of Colorado Boulder, 3415 Colorado Ave, Boulder, CO 80303, United States of America.
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9
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Juliano SA, Serafim LF, Duay SS, Heredia Chavez M, Sharma G, Rooney M, Comert F, Pierce S, Radulescu A, Cotten ML, Mihailescu M, May ER, Greenwood AI, Prabhakar R, Angeles-Boza AM. A Potent Host Defense Peptide Triggers DNA Damage and Is Active against Multidrug-Resistant Gram-Negative Pathogens. ACS Infect Dis 2020; 6:1250-1263. [PMID: 32251582 DOI: 10.1021/acsinfecdis.0c00051] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Gram-negative bacteria are some of the biggest threats to public health due to a large prevalence of antibiotic resistance. The difficulty in treating bacterial infections, stemming from their double membrane structure combined with efflux pumps in the outer membrane, has resulted in a much greater need for antimicrobials with activity against these pathogens. Tunicate host defense peptide (HDP), Clavanin A, is capable of not only inhibiting Gram-negative growth but also potentiating activity in the presence of Zn(II). Here, we provide evidence that the improvements of Clavanin A activity in the presence of Zn(II) are due to its novel mechanism of action. We employed E. coli TD172 (ΔrecA::kan) and the terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay to show in cellulae that DNA damage occurs upon treatment with Clavanin A. In vitro assays demonstrated that Zn(II) ions are required for the nuclease activity of the peptide. The quantum mechanics/molecular mechanics (QM/MM) calculations were used to investigate the mechanism of DNA damage. In the rate-determining step of the proposed mechanism, due to its Lewis acidity, the Zn(II) ion activates the scissile P-O bond of DNA and creates a hydroxyl nucleophile from a water molecule. A subsequent attack by this group to the electrophilic phosphorus cleaves the scissile phosphoester bond. Additionally, we utilized bacterial cytological profiling (BCP), circular dichroism (CD) spectroscopy in the presence of lipid vesicles, and surface plasmon resonance combined with electrical impedance spectroscopy in order to address the apparent discrepancies between our results and the previous studies regarding the mechanism of action of Clavanin A. Finally, our approach may lead to the identification of additional Clavanin A like HDPs and promote the development of antimicrobial peptide based therapeutics.
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Affiliation(s)
- Samuel A. Juliano
- Department of Chemistry, University of Connecticut, 55 N. Eagleville Road, Storrs, Connecticut 06269, United States
| | - Leonardo F. Serafim
- Department of Chemistry, University of Miami, Coral Gables, Florida 33146, United States
| | - Searle S. Duay
- Department of Chemistry, University of Connecticut, 55 N. Eagleville Road, Storrs, Connecticut 06269, United States
| | - Maria Heredia Chavez
- Department of Chemistry, University of Connecticut, 55 N. Eagleville Road, Storrs, Connecticut 06269, United States
| | - Gaurav Sharma
- Department of Chemistry, University of Miami, Coral Gables, Florida 33146, United States
| | - Mary Rooney
- Department of Applied Science, William and Mary, Williamsburg, Virginia 23187-8795, United States
| | - Fatih Comert
- Institute for Bioscience and Biotechnology Research, University of Maryland, 9600 Gudelsky Drive, Rockville, Maryland 20850, United States
| | - Scott Pierce
- Department of Chemistry, University of Connecticut, 55 N. Eagleville Road, Storrs, Connecticut 06269, United States
| | - Andrei Radulescu
- Department of Chemistry, University of Connecticut, 55 N. Eagleville Road, Storrs, Connecticut 06269, United States
| | - Myriam L. Cotten
- Department of Applied Science, William and Mary, Williamsburg, Virginia 23187-8795, United States
| | - Mihaela Mihailescu
- Institute for Bioscience and Biotechnology Research, University of Maryland, 9600 Gudelsky Drive, Rockville, Maryland 20850, United States
| | - Eric R. May
- Department of Molecular and Cell Biology, University of Connecticut, 91 N. Eagleville Road, Storrs, Connecticut 06269, United States
| | - Alexander I. Greenwood
- Department of Applied Science, William and Mary, Williamsburg, Virginia 23187-8795, United States
| | - Rajeev Prabhakar
- Department of Chemistry, University of Miami, Coral Gables, Florida 33146, United States
| | - Alfredo M. Angeles-Boza
- Department of Chemistry, University of Connecticut, 55 N. Eagleville Road, Storrs, Connecticut 06269, United States
- Institute of Materials Science, University of Connecticut, 97 N. Eagleville Road, Storrs, Connecticut 06269, United States
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10
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Bozzi AT, Nolan EM. Avian MRP126 Restricts Microbial Growth through Ca(II)-Dependent Zn(II) Sequestration. Biochemistry 2020; 59:802-817. [PMID: 31886651 DOI: 10.1021/acs.biochem.9b01012] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The calgranulins form a class of S100 proteins in higher vertebrates that innate-immune cells release in abundance at infection sites. These proteins function by binding transition metal ions to prevent microbial pathogens from obtaining those essential nutrients. Mammals express three distinct members of this family: S100A8 (calgranulin A), S100A9 (calgranulin B, which heterooligomerizes with S100A8 to form calprotectin), and S100A12 (calgranulin C), that exhibit Ca(II)-dependent transition metal binding properties. Human calprotectin effectively sequesters Mn(II), Fe(II), Ni(II), and Zn(II), whereas human S100A12 selectively sequesters Zn(II) over these other metal ions. Birds and reptiles express a single calgranulin homologue named MRP126, which we reasoned could have properties more similar to those of either calprotectin or S100A12. Here we present the purification and biophysical characterization of recombinant chicken MRP126 and, to the best of our knowledge, provide the first assessment of the metal binding and antimicrobial properties of an avian MRP126. We show that MRP126 is a homodimer that selectively sequesters Zn(II) and restricts the growth of certain microbes. MRP126 binds Zn(II) at two canonical His3Asp sites. The presence of excess Ca(II) increases the affinity of the His3Asp sites from the low-nanomolar to the low-picomolar range, thereby enhancing antimicrobial activity. Chicken MRP126 also binds additional Zn(II) equivalents with low-nanomolar affinity at two nonconserved dicysteine sites and with high-nanomolar affinity using a histidine-rich C-terminal tail that is a hallmark of this clade of calgranulins. Our results with chicken MRP126 suggest that Ca(II)-dependent Zn(II) sequestration was a role of the last common ancestor of calgranulin proteins, with mammalian calprotectin subsequently evolving a broader metal binding repertoire.
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Affiliation(s)
- Aaron T Bozzi
- Department of Chemistry , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , United States
| | - Elizabeth M Nolan
- Department of Chemistry , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , United States
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11
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Elitt CM, Fahrni CJ, Rosenberg PA. Zinc homeostasis and zinc signaling in white matter development and injury. Neurosci Lett 2019; 707:134247. [PMID: 31059767 DOI: 10.1016/j.neulet.2019.05.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 04/29/2019] [Accepted: 05/01/2019] [Indexed: 02/08/2023]
Abstract
Zinc is an essential dietary micronutrient that is abundant in the brain with diverse roles in development, injury, and neurological diseases. With new imaging tools and chelators selectively targeting zinc, the field of zinc biology is rapidly expanding. The importance of zinc homeostasis is now well recognized in neurodegeneration, but there is emerging data that zinc may be equally important in white matter disorders. This review provides an overview of zinc biology, including a discussion of clinical disorders of zinc deficiency, different zinc pools, zinc biomarkers, and methods for measuring zinc. It emphasizes our limited understanding of how zinc is regulated in oligodendrocytes and white matter. Gaps in knowledge about zinc transporters and zinc signaling are discussed. Zinc-induced oligodendrocyte injury pathways relevant to white matter stroke, multiple sclerosis, and white matter injury of prematurity are reviewed and examples of zinc-dependent proteins relevant to myelination highlighted. Finally, a novel ratiometric zinc sensor is reviewed, revealing new information about mobile zinc during oligodendrocyte differentiation. With a better understanding of zinc biology in oligodendrocytes, new therapeutic targets for white matter disorders may be possible and the necessary tools to appropriately study zinc are finally available.
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Affiliation(s)
- Christopher M Elitt
- Boston Children's Hospital, Department of Neurology and the F.M. Kirby Neurobiology Center, 300 Longwood Avenue, Boston, MA, United States; Program in Neuroscience, Harvard Medical School, Boston, MA, 02115, USA.
| | - Christoph J Fahrni
- School of Chemistry and Biochemistry and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Paul A Rosenberg
- Boston Children's Hospital, Department of Neurology and the F.M. Kirby Neurobiology Center, 300 Longwood Avenue, Boston, MA, United States; Program in Neuroscience, Harvard Medical School, Boston, MA, 02115, USA
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12
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Chen G, Yu Y, Wu X, Wang G, Gu G, Wang F, Ren J, Zhang H, Zhao Y. Microfluidic Electrospray Niacin Metal-Organic Frameworks Encapsulated Microcapsules for Wound Healing. RESEARCH (WASHINGTON, D.C.) 2019; 2019:6175398. [PMID: 31549071 PMCID: PMC6750103 DOI: 10.34133/2019/6175398] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 04/01/2019] [Indexed: 12/31/2022]
Abstract
Niacin metal-organic frameworks (MOFs) encapsulated microcapsules with alginate shells and copper-/zinc-niacin framework cores were in situ synthesized by using a microfluidic electrospray approach for wound healing. As the alginate shells were bacteria-responsively degradable, the niacin MOFs encapsulated microcapsules could intelligently, controllably, and programmably release calcium, copper, and zinc ions, depending on the degree of infections. The released ions could not only kill microbes by destroying their membrane and inducing the outflow of nutrient substance, but also activate copper/zinc superoxide dismutase (Cu/Zn-SOD) to eliminate oxygen free radicals and rescue the cells from oxidative stress injury. Furthermore, the simultaneously released niacin could promote hemangiectasis and absorption of functional metal ions. Thus, the niacin MOFs encapsulated microcapsules were imparted with outstanding antibacterial, antioxidant, and angiogenesis properties. Based on an in vivo study, we have also demonstrated that the chronic wound healing process of an infected full-thickness skin defect model could be significantly enhanced by using the niacin MOFs encapsulated microcapsules as therapeutic agent. Therefore, the microfluidic electrospray niacin MOFs encapsulated microcapsules are potential for clinical applications.
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Affiliation(s)
- Guopu Chen
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - Yunru Yu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Xiuwen Wu
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - Gefei Wang
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - Guosheng Gu
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - Feng Wang
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - Jianan Ren
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - Huidan Zhang
- School of Engineering and Applied Sciences and Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA
| | - Yuanjin Zhao
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
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13
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Richardson CER, Nolan EM, Shoulders MD, Lippard SJ. A Sensitive, Nonradioactive Assay for Zn(II) Uptake into Metazoan Cells. Biochemistry 2018; 57:6807-6815. [PMID: 30381945 PMCID: PMC6437758 DOI: 10.1021/acs.biochem.8b01043] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Sensitive measurements of cellular Zn(II) uptake currently rely on quantitating radioactive emissions from cells treated with 65Zn(II). Here, we describe a straightforward and reliable method employing a stable isotope to sensitively measure Zn(II) uptake by metazoan cells. First, biological medium selectively depleted of natural abundance Zn(II) using A12-resin [Richardson, C. E. R., et al. (2018) J. Am. Chem. Soc. 140, 2413] is restored to physiological levels of Zn(II) by addition of a non-natural Zn(II) isotope distribution comprising 70% 70Zn(II). The resulting 70Zn(II)-enriched medium facilitates quantitation of Zn(II) uptake using inductively coupled plasma-mass spectrometry (ICP-MS). This sensitive and reliable assay assesses Zn(II)-uptake kinetics at early time points and can be used to delineate how chemical and genetic perturbations influence Zn(II) uptake. Further, the use of ICP-MS in a Zn(II)-uptake assay permits simultaneous measurement of multiple metal ion concentrations. We used this capability to show that, across three cell lines, Zn(II) deficiency enhances selectivity for Zn(II) over Cd(II) uptake.
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Affiliation(s)
- Christopher E. R. Richardson
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Elizabeth M. Nolan
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Matthew D. Shoulders
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Stephen J. Lippard
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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Neupane DP, Kumar S, Yukl ET. Two ABC Transporters and a Periplasmic Metallochaperone Participate in Zinc Acquisition in Paracoccus denitrificans. Biochemistry 2018; 58:126-136. [PMID: 30353723 PMCID: PMC6824839 DOI: 10.1021/acs.biochem.8b00854] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
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Bacteria must acquire the essential
element zinc from extremely
limited environments, and this function is performed largely by ATP
binding cassette (ABC) transporters. These systems rely on a periplasmic
or extracellular solute binding protein (SBP) to bind zinc specifically
with a high affinity and deliver it to the membrane permease for import
into the cytoplasm. However, zinc acquisition systems in bacteria
may be more complex, involving multiple transporters and other periplasmic
or extracellular zinc binding proteins. Here we describe the zinc
acquisition functions of two zinc SBPs (ZnuA and AztC) and a novel
periplasmic metallochaperone (AztD) in Paracoccus denitrificans. ZnuA was characterized in vitro and demonstrated
to bind as many as 5 zinc ions with a high affinity. It does not interact
with AztD, in contrast to what has been demonstrated for AztC, which
is able to acquire a single zinc ion through associative transfer
from AztD. Deletions of the corresponding genes singly and in combination
show that either AztC or ZnuA is sufficient and essential for robust
growth in zinc-limited media. Although AztD cannot support transport
of zinc into the cytoplasm, it likely functions to store zinc in the
periplasm for transfer through the AztABCD system.
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Affiliation(s)
- Durga P Neupane
- Department of Chemistry and Biochemistry , New Mexico State University , Las Cruces , New Mexico 88003 , United States
| | - Santosh Kumar
- Department of Biological Sciences , University of Texas at Dallas , Richardson , Texas 75080 , United States
| | - Erik T Yukl
- Department of Chemistry and Biochemistry , New Mexico State University , Las Cruces , New Mexico 88003 , United States
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15
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Pandey S, Kumar P, Gupta R. Polymerization led selective detection and removal of Zn2+and Cd2+ions: isolation of Zn- and Cd-MOFs and reversibility studies. Dalton Trans 2018; 47:14686-14695. [DOI: 10.1039/c8dt01956h] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two post-functionalized chemosensors display remarkable sensing of Zn2+and Cd2+ionsviagenerating corresponding metal–organic frameworks (MOFs), whereas nitrate and nitrite ions reverse the MOF-polymerization process.
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Affiliation(s)
- Saurabh Pandey
- Department of Chemistry
- University of Delhi
- Delhi 110 007
- India
| | - Pramod Kumar
- Department of Chemistry
- University of Delhi
- Delhi 110 007
- India
| | - Rajeev Gupta
- Department of Chemistry
- University of Delhi
- Delhi 110 007
- India
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