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Su Q, Xu B, Chen X, Rokita SE. Misregulation of bromotyrosine compromises fertility in male Drosophila. Proc Natl Acad Sci U S A 2024; 121:e2322501121. [PMID: 38748578 PMCID: PMC11126969 DOI: 10.1073/pnas.2322501121] [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: 01/02/2024] [Accepted: 04/15/2024] [Indexed: 05/27/2024] Open
Abstract
Biological regulation often depends on reversible reactions such as phosphorylation, acylation, methylation, and glycosylation, but rarely halogenation. A notable exception is the iodination and deiodination of thyroid hormones. Here, we report detection of bromotyrosine and its subsequent debromination during Drosophila spermatogenesis. Bromotyrosine is not evident when Drosophila express a native flavin-dependent dehalogenase that is homologous to the enzyme responsible for iodide salvage from iodotyrosine in mammals. Deletion or suppression of the dehalogenase-encoding condet (cdt) gene in Drosophila allows bromotyrosine to accumulate with no detectable chloro- or iodotyrosine. The presence of bromotyrosine in the cdt mutant males disrupts sperm individualization and results in decreased fertility. Transgenic expression of the cdt gene in late-staged germ cells rescues this defect and enhances tolerance of male flies to bromotyrosine. These results are consistent with reversible halogenation affecting Drosophila spermatogenesis in a process that had previously eluded metabolomic, proteomic, and genomic analyses.
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Affiliation(s)
- Qi Su
- Department of Chemistry, The Johns Hopkins University, Baltimore, MD21218
| | - Bing Xu
- Department of Chemistry, The Johns Hopkins University, Baltimore, MD21218
| | - Xin Chen
- HHMI, The Johns Hopkins University, Baltimore, MD21218
- Department of Biology, The Johns Hopkins University, Baltimore, MD21218
| | - Steven E. Rokita
- Department of Chemistry, The Johns Hopkins University, Baltimore, MD21218
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Moyer TB, Parsley NC, Sadecki PW, Schug WJ, Hicks LM. Leveraging orthogonal mass spectrometry based strategies for comprehensive sequencing and characterization of ribosomal antimicrobial peptide natural products. Nat Prod Rep 2021; 38:489-509. [PMID: 32929442 PMCID: PMC7956910 DOI: 10.1039/d0np00046a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Covering: Up to July 2020Ribosomal antimicrobial peptide (AMP) natural products, also known as ribosomally synthesized and post-translationally modified peptides (RiPPs) or host defense peptides, demonstrate potent bioactivities and impressive complexity that complicate molecular and biological characterization. Tandem mass spectrometry (MS) has rapidly accelerated bioactive peptide sequencing efforts, yet standard workflows insufficiently address intrinsic AMP diversity. Herein, orthogonal approaches to accelerate comprehensive and accurate molecular characterization without the need for prior isolation are reviewed. Chemical derivatization, proteolysis (enzymatic and chemical cleavage), multistage MS fragmentation, and separation (liquid chromatography and ion mobility) strategies can provide complementary amino acid composition and post-translational modification data to constrain sequence solutions. Examination of two complex case studies, gomesin and styelin D, highlights the practical implementation of the proposed approaches. Finally, we emphasize the importance of heterogeneous AMP peptidoforms that confer varying biological function, an area that warrants significant further development.
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Affiliation(s)
- Tessa B Moyer
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
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Addis DR, Aggarwal S, Doran SF, Jian MY, Ahmad I, Kojima K, Ford DA, Matalon S, Mobley JA. Vascular permeability disruption explored in the proteomes of mouse lungs and human microvascular cells following acute bromine exposure. Am J Physiol Lung Cell Mol Physiol 2020; 319:L337-L359. [PMID: 32579402 DOI: 10.1152/ajplung.00196.2020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Bromine (Br2) is an organohalide found in nature and is integral to many manufacturing processes. Br2 is toxic to living organisms, and high concentrations can prove fatal. To meet industrial demand, large amounts of purified Br2 are produced, transported, and stored worldwide, providing a multitude of interfaces for potential human exposure through either accidents or terrorism. To identify the key mechanisms associated with acute Br2 exposure, we have surveyed the lung proteomes of C57BL/6 male mice and human lung-derived microvascular endothelial cells (HMECs) at 24 h following exposure to Br2 in concentrations likely to be encountered in the vicinity of industrial accidents. Global discovery proteomics applications combined with systems biology analysis identified robust and highly significant changes in proteins associated with three biological processes: 1) exosome secretion, 2) inflammation, and 3) vascular permeability. We focused on the latter, conducting physiological studies on isolated perfused lungs harvested from mice 24 h after Br2 exposure. These experiments revealed significant increases in the filtration coefficient (Kf) indicating increased permeability of the pulmonary vasculature. Similarly, confluent monolayers of Br2 and Br-lipid-treated HMECs exhibited differential levels of zona occludens-1 that were found to be dissociated from cell wall localization, an increase in phosphorylation and internalization of E-cadherin, as well as increased actin stress fiber formation, all of which are consistent with increased permeability. Taken as a whole, our discovery proteomics and systems analysis workflow, combined with physiological measurements of permeability, revealed both profound and novel biological changes that contribute to our current understanding of Br2 toxicity.
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Affiliation(s)
- Dylan R Addis
- Division of Molecular and Translational Biomedicine, Department of Anesthesiology and Perioperative Medicine, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama.,Pulmonary Injury and Repair Center, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama.,Division of Cardiothoracic Anesthesiology, Department of Anesthesiology and Perioperative Medicine, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama
| | - Saurabh Aggarwal
- Division of Molecular and Translational Biomedicine, Department of Anesthesiology and Perioperative Medicine, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama.,Pulmonary Injury and Repair Center, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama
| | - Stephen F Doran
- Division of Molecular and Translational Biomedicine, Department of Anesthesiology and Perioperative Medicine, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama.,Pulmonary Injury and Repair Center, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama
| | - Ming-Yuan Jian
- Division of Molecular and Translational Biomedicine, Department of Anesthesiology and Perioperative Medicine, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama.,Pulmonary Injury and Repair Center, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama
| | - Israr Ahmad
- Division of Molecular and Translational Biomedicine, Department of Anesthesiology and Perioperative Medicine, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama.,Pulmonary Injury and Repair Center, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama
| | - Kyoko Kojima
- Comprehensive Cancer Center, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama
| | - David A Ford
- Department of Biochemistry and Molecular Biology, Saint Louis University School of Medicine, St. Louis, Missouri
| | - Sadis Matalon
- Division of Molecular and Translational Biomedicine, Department of Anesthesiology and Perioperative Medicine, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama.,Pulmonary Injury and Repair Center, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama
| | - James A Mobley
- Division of Molecular and Translational Biomedicine, Department of Anesthesiology and Perioperative Medicine, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama.,Pulmonary Injury and Repair Center, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama.,Comprehensive Cancer Center, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama
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Yamamoto J, Denda M, Maeda N, Kita M, Komiya C, Tanaka T, Nomura W, Tamamura H, Sato Y, Yamauchi A, Shigenaga A, Otaka A. Development of a traceable linker containing a thiol-responsive amino acid for the enrichment and selective labelling of target proteins. Org Biomol Chem 2015; 12:3821-6. [PMID: 24806338 DOI: 10.1039/c4ob00622d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A traceable linker that is potentially applicable to identification of a target protein of bioactive compounds was developed. It enabled not only thiol-induced cleavage of the linker for enrichment of the target protein but also selective labelling to pick out the target from contaminated non-target proteins for facile identification.
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Affiliation(s)
- Jun Yamamoto
- Institute of Health Biosciences and Graduate School of Pharmaceutical Sciences, The University of Tokushima, Shomachi, Tokushima 770-8505, Japan.
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Yamamoto J, Maeda N, Komiya C, Tanaka T, Denda M, Ebisuno K, Nomura W, Tamamura H, Sato Y, Yamauchi A, Shigenaga A, Otaka A. Development of a fluoride-responsive amide bond cleavage device that is potentially applicable to a traceable linker. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.05.110] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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