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Suzuki S, Hasegawa A, Uebori M, Shinomiya M, Yoshida Y, Ookubo K, Takino M, Hasegawa H, Takazawa M, Takemine S. Non-target environmental analysis by liquid chromatography/high-resolution mass spectrometry with a product ion and neutral loss database. JOURNAL OF MASS SPECTROMETRY : JMS 2021; 56:e4695. [PMID: 33410206 DOI: 10.1002/jms.4695] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 11/07/2020] [Accepted: 11/10/2020] [Indexed: 06/12/2023]
Abstract
Despite the increasing detection of emerging substances in the environment, the identity of most are left unknown due to the lack of efficient identification methods. We developed a non-target analysis method for identifying unknown substances in the environment by liquid chromatography/high-resolution mass spectrometry (LC/HRMS) with a product ion and neutral loss database (PNDB). The present analysis describes an elucidation method with elemental compositions of the molecules, product ions, and corresponding neutral losses of the unknown substance: (1) with the molecular formula, possible molecular structures are retrieved from two chemical structure databases (PubChem and ChemSpider); then (2) with the elemental compositions of product ions and neutral losses, possible partial structures are retrieved from the PNDB; and finally, (3) molecular structures that match the possible partial structures are listed in order of number of hits. A molecular structure with a higher number of hits is more similar to the structure of the analyzed substance. The performance of the non-target method was evaluated by simulated analysis of 150 LC/HRMS spectra registered in MassBank. First, all substances of the same mass data (41/41) and 68% (39/57) of the mass data of the same substances not registered in the PNDB were elucidated. It was demonstrated that 14% (7/52) and 31% (16/52) of the substances with no mass spectral data registered in the PNDB were obtained at the first and within the fifth place, respectively. Owing to the fact that 10 of the total hits occurred in product ions and neutral losses, almost 50% of the substances evaluated with this method were placed at the top 4 positions in the similarity ranking. Importantly, the proposed method is effective for analyzing mass spectral data that has not been registered in the PNDB and thus is expected to be used for a variety of non-target analyses.
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Affiliation(s)
- Shigeru Suzuki
- Graduate School of Bioscience and Biotechnology, Chubu University, Kasugai, Japan
| | - Atsuko Hasegawa
- Environmental Conservation Division, Kanagawa Environmental Research Center, 1-3-39, Shinomiya,, Hiratsuka, 254-0014, Japan
| | - Michiko Uebori
- Graduate School of Bioscience and Biotechnology, Chubu University, Kasugai, Japan
| | - Miho Shinomiya
- School of Health and Social Services, Saitama Prefectural University, 820 Sannomiya, Koshigaya, 343-8540, Japan
| | - Yasuko Yoshida
- Environment, Health and Safety Division, Sumica Chemical Analysis Service, Ltd., Sumitomo Fudosan Hongo Building 9F, 22-5, Hongo 3-chome, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Kaori Ookubo
- Physics and Chemistry Research and Investigate Division, Saga Prefectural Institute of Public Health and Pharmaceutical Research, 1-20 Hacchonawatemachi, Saga, 849-0925, Japan
| | - Masahiko Takino
- Chromatography and Mass Spectrometry Division, Agilent Technologies Japan Ltd., 9-1 Takakura-machi, Hachioji, 192-0033, Japan
| | - Hitomi Hasegawa
- Water Quality Division, Nagoya City Environmental Science Research Institute, 5-16-8 Toyoda, Minami-ku, Nagoya, 457-0841, Japan
| | - Mari Takazawa
- Graduate School of Bioscience and Biotechnology, Chubu University, Kasugai, Japan
- Water Environment Research Group, Public Works Research Institute, 1-6 Minamihara, Tsukuba, 305-8516, Japan
| | - Shusuke Takemine
- Chemical Substance Team, Center for Environmental Science in Saitama, 914 Oaza-Kamitanadare, Kisai-machi, Kazo, 347-0115, Japan
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Duran CL, Howell DW, Dave JM, Smith RL, Torrie ME, Essner JJ, Bayless KJ. Molecular Regulation of Sprouting Angiogenesis. Compr Physiol 2017; 8:153-235. [PMID: 29357127 DOI: 10.1002/cphy.c160048] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The term angiogenesis arose in the 18th century. Several studies over the next 100 years laid the groundwork for initial studies performed by the Folkman laboratory, which were at first met with some opposition. Once overcome, the angiogenesis field has flourished due to studies on tumor angiogenesis and various developmental models that can be genetically manipulated, including mice and zebrafish. In addition, new discoveries have been aided by the ability to isolate primary endothelial cells, which has allowed dissection of various steps within angiogenesis. This review will summarize the molecular events that control angiogenesis downstream of biochemical factors such as growth factors, cytokines, chemokines, hypoxia-inducible factors (HIFs), and lipids. These and other stimuli have been linked to regulation of junctional molecules and cell surface receptors. In addition, the contribution of cytoskeletal elements and regulatory proteins has revealed an intricate role for mobilization of actin, microtubules, and intermediate filaments in response to cues that activate the endothelium. Activating stimuli also affect various focal adhesion proteins, scaffold proteins, intracellular kinases, and second messengers. Finally, metalloproteinases, which facilitate matrix degradation and the formation of new blood vessels, are discussed, along with our knowledge of crosstalk between the various subclasses of these molecules throughout the text. Compr Physiol 8:153-235, 2018.
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Affiliation(s)
- Camille L Duran
- Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, College Station, Texas, USA
| | - David W Howell
- Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, College Station, Texas, USA
| | - Jui M Dave
- Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, College Station, Texas, USA
| | - Rebecca L Smith
- Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, College Station, Texas, USA
| | - Melanie E Torrie
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa, USA
| | - Jeffrey J Essner
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa, USA
| | - Kayla J Bayless
- Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, College Station, Texas, USA
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Han G, Zeng Q, Jiang Z, Deng W, Huang C, Li Y. Simple preparation of magnetic metal-organic frameworks composite as a "bait" for phosphoproteome research. Talanta 2017; 171:283-290. [PMID: 28551142 DOI: 10.1016/j.talanta.2017.03.106] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 03/23/2017] [Accepted: 03/29/2017] [Indexed: 10/19/2022]
Abstract
Phosphospecific enrichment techniques and mass spectrometry (MS) are primary tools for comprehending the cellular phosphoproteome. In this work, a rational and extremely facile route to synthesize the magnetic metal-organic frameworks (mMOFs) was employed and the prepared composite was first utilized as a "bait" for selective enrichment of phosphopeptides. Typically, the mMOFs was synthesized via electrostatic self-assembly between the negatively charged Fe3O4 magnetic nanoparticles (MNPs) and positively charged MIL-101(Fe). The obtained Fe3O4/MIL-101(Fe) composite possessed well-defined structures, rough surface, highly specific surface area and excellent magnetic property. To demonstrate their ability for enrichment of phosphopeptides, we applied Fe3O4/MIL-101(Fe) as a "bait" to capture the phosphopeptides from standard protein digestion and practical samples. The enriched phosphopeptides were analyzed by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). The MS results show that the Fe3O4/MIL-101(Fe) exhibits superior enrichment performance for phosphopeptides with low detectable concentration assessed to be 8 fmol, selectivity investigated to be 1:1000 using β-casein/bovine serum albumin mixture and enrichment recovery evaluated to be 89.8%. Based on these excellent properties, the prepared composite was used to enrich the phosphopeptides from tilapia eggs biological samples for the first time. A total number of 51 phosphorylation sites were identified from the digest of tilapia eggs proteins, suggesting the excellent potential of Fe3O4/MIL-101(Fe) composite in the practical application.
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Affiliation(s)
- Guobin Han
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry of Ministry of Education (Southwest University), College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Qiaoling Zeng
- Chongqing Key Laboratory of Biomedical Analysis (Southwest University), Chongqing Science and Technology Commission, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Zhongwei Jiang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry of Ministry of Education (Southwest University), College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Wenchan Deng
- Chongqing Key Laboratory of Biomedical Analysis (Southwest University), Chongqing Science and Technology Commission, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Chengzhi Huang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry of Ministry of Education (Southwest University), College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory of Biomedical Analysis (Southwest University), Chongqing Science and Technology Commission, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Yuanfang Li
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry of Ministry of Education (Southwest University), College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China.
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Muthusamy A, Lin CM, Shanmugam S, Lindner HM, Abcouwer SF, Antonetti DA. Ischemia-reperfusion injury induces occludin phosphorylation/ubiquitination and retinal vascular permeability in a VEGFR-2-dependent manner. J Cereb Blood Flow Metab 2014; 34:522-31. [PMID: 24398936 PMCID: PMC3948134 DOI: 10.1038/jcbfm.2013.230] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Revised: 11/05/2013] [Accepted: 11/25/2013] [Indexed: 02/02/2023]
Abstract
Retinal ischemia-reperfusion (IR) induces neurodegenaration as well as blood-retinal barrier (BRB) breakdown causing vascular permeability. Whereas the neuronal death has been extensively studied, the molecular mechanisms related to BRB breakdown in IR injury remain poorly understood. In this study, we investigated the early changes in tight junctional (TJ) proteins in response to IR injury. Ischemia-reperfusion injury was induced in male rat retinas by increasing the intraocular pressure for 45 minutes followed by natural reperfusion. The results demonstrate that IR injury induced occludin Ser490 phosphorylation and ubiquitination within 15 minutes of reperfusion with subsequent vascular permeability. Immunohistochemical analysis revealed a rapid increase in occludin Ser490 phosphorylation and loss of Zonula occludens-1 (ZO-1) protein, particularly in arterioles. Ischemia-reperfusion injury also rapidly induced the activation and phosphorylation of vascular endothelial growth factor receptor-2 (VEGFR-2) at tyrosine 1175. Blocking vascular endothelial growth factor (VEGF) function by intravitreal injection of bevacizumab prevented VEGFR-2 activation, occludin phosphorylation, and vascular permeability. These studies suggest a novel mechanism of occludin Ser490 phosphorylation and ubiquitination downstream of VEGFR2 activation associated with early IR-induced vascular permeability.
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Affiliation(s)
- Arivalagan Muthusamy
- Department of Ophthalmology and Visual Sciences, University of Michigan Kellogg Eye Center, Ann Arbor, Michigan, USA
| | - Cheng-Mao Lin
- Department of Ophthalmology and Visual Sciences, University of Michigan Kellogg Eye Center, Ann Arbor, Michigan, USA
| | - Sumathi Shanmugam
- Department of Ophthalmology and Visual Sciences, University of Michigan Kellogg Eye Center, Ann Arbor, Michigan, USA
| | - Heather M Lindner
- Department of Ophthalmology and Visual Sciences, University of Michigan Kellogg Eye Center, Ann Arbor, Michigan, USA
| | - Steven F Abcouwer
- Department of Ophthalmology and Visual Sciences, University of Michigan Kellogg Eye Center, Ann Arbor, Michigan, USA
| | - David A Antonetti
- Department of Ophthalmology and Visual Sciences, University of Michigan Kellogg Eye Center, Ann Arbor, Michigan, USA
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Zhang B, Liu JY. Mass spectrometric identification of in vivo phosphorylation sites of differentially expressed proteins in elongating cotton fiber cells. PLoS One 2013; 8:e58758. [PMID: 23516553 PMCID: PMC3596310 DOI: 10.1371/journal.pone.0058758] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2012] [Accepted: 02/06/2013] [Indexed: 01/12/2023] Open
Abstract
Two-dimensional gel electrophoresis (2-DE)-based proteomics approach was applied to extensively explore the molecular basis of plant development and environmental adaptation. These proteomics analyses revealed thousands of differentially expressed proteins (DEPs) closely related to different biological processes. However, little attention has been paid to how peptide mass fingerprinting (PMF) data generated by the approach can be directly utilized for the determination of protein phosphorylation. Here, we used the software tool FindMod to predict the peptides that might carry the phosphorylation modification by examining their PMF data for mass differences between the empirical and theoretical peptides and then identified phosphorylation sites using MALDI TOF/TOF according to predicted peptide data from these DEP spots in the 2-D gels. As a result, a total of 48 phosphorylation sites of 40 DEPs were successfully identified among 235 known DEPs previously revealed in the 2-D gels of elongating cotton fiber cells. The 40 phosphorylated DEPs, including important enzymes such as enolase, transketolase and UDP-L-rhamnose synthase, are presumed to participate in the functional regulation of numerous metabolic pathways, suggesting the reverse phosphorylation of these proteins might play important roles in elongating cotton fibers. The results also indicated that some different isoforms of the identical DEP revealed in our 2-DE-based proteomics analysis could be annotated by phosphorylation events. Taken together, as the first report of large-scale identification of phosphorylation sites in elongating cotton fiber cells, our study provides not only an excellent example of directly identifying phosphorylation sites from known DEPs on 2-D gels but also provides a valuable resource for future functional studies of phosphorylated proteins in this field.
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Affiliation(s)
- Bing Zhang
- Laboratory of Molecular Biology and MOE Key Laboratory of Bioinformatics, School of Life Sciences, Tsinghua University, Beijing, P. R. China
| | - Jin-Yuan Liu
- Laboratory of Molecular Biology and MOE Key Laboratory of Bioinformatics, School of Life Sciences, Tsinghua University, Beijing, P. R. China
- * E-mail: .
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