1
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Kolodeeva OE, Kolodeeva OE, Averinskaya DA, Makarova YA. Induction of the PERK-eIF2α-ATF4 Pathway in M1 Macrophages under Endoplasmic Reticulum Stress. DOKL BIOCHEM BIOPHYS 2024:10.1134/S1607672924600301. [PMID: 39002013 DOI: 10.1134/s1607672924600301] [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: 04/01/2024] [Revised: 04/21/2024] [Accepted: 04/23/2024] [Indexed: 07/15/2024]
Abstract
Translation inhibition can activate two cell death pathways. The first pathway is activated by translational aberrations, the second by endoplasmic reticulum (ER) stress. In this work, the effect of ribosome-inactivating protein type II (RIP-II) viscumin on M1 macrophages derived from the THP-1 cell line was investigated. The number of modified ribosomes was evaluated by real-time PCR. Transcriptome analysis revealed that viscumin induces the ER stress activated by the PERK sensor.
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Affiliation(s)
- O E Kolodeeva
- Faculty of Biology and Biotechnology, HSE University, Moscow, Russia.
| | - O E Kolodeeva
- Faculty of Biology and Biotechnology, HSE University, Moscow, Russia.
| | - D A Averinskaya
- Faculty of Biology and Biotechnology, HSE University, Moscow, Russia.
| | - Yu A Makarova
- Faculty of Biology and Biotechnology, HSE University, Moscow, Russia.
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia.
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2
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Specificity of viscumin revised. As probed with a printed glycan array. Biochimie 2022; 202:94-102. [PMID: 35988841 DOI: 10.1016/j.biochi.2022.08.009] [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: 07/06/2022] [Revised: 08/11/2022] [Accepted: 08/13/2022] [Indexed: 01/01/2023]
Abstract
Viscumin, a lectin used in anti-cancer therapy, was originally considered as βGal recognizing protein; later, an ability to bind 6'-sialyl N-acetyllactosamine (6'SLN) terminated gangliosides was found. Here we probed viscumin with a printed glycan array (PGA) containing a large number of mammalian sulfated glycans, and found a strong binding to glycans with 6-O-SuGal moiety as lactose, N-acetyllactosamine (LN), di-N-acetyllactosamine (LacdiNAc), and even 6-O-SuGalNAcα (but not SiaTn). Also, the ability to bind some of αGal terminated glycans, including Galα1-3Galβ1-4GlcNAc, was observed. Unexpectedly, only weak interaction was detected with parent neutral β-galactosides including LN-LN-LN and branched (LN)2LN oligolactosamines; in the light of these data, one should not confidently classify viscumin as a β-galactoside-binding lectin. Carrying out PGA in the presence of neutral or sulfated/sialylated glycan, together with sequential elution from lactose-sepharose and consideration of the protein structure, lead to the conclusion that two glycan-binding sites of viscumin have different specificities, one of which prefers charged sulfated and sialylated moieties.
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3
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Differences in Medium-Induced Conformational Plasticity Presumably Underlie Different Cytotoxic Activity of Ricin and Viscumin. Biomolecules 2022; 12:biom12020295. [PMID: 35204796 PMCID: PMC8961613 DOI: 10.3390/biom12020295] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 02/04/2022] [Accepted: 02/08/2022] [Indexed: 01/03/2023] Open
Abstract
Structurally similar catalytic subunits A of ricin (RTA) and viscumin (MLA) exhibit cytotoxic activity through ribosome inactivation. Ricin is more cytotoxic than viscumin, although the molecular mechanisms behind this difference are still poorly understood. To shed more light on this problem, we used a combined biochemical/molecular modeling approach to assess possible relationships between the activity of toxins and their structural/dynamic properties. Based on bioassay measurements, it was suggested that the differences in activity are associated with the ability of RTA and MLA to undergo structural/hydrophobic rearrangements during trafficking through the endoplasmic reticulum (ER) membrane. Molecular dynamics simulations and surface hydrophobicity mapping of both proteins in different media showed that RTA rearranges its structure in a membrane-like environment much more efficiently than MLA. Their refolded states also drastically differ in terms of hydrophobic organization. We assume that the higher conformational plasticity of RTA is favorable for the ER-mediated translocation pathway, which leads to a higher rate of toxin penetration into the cytoplasm.
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4
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Makarova JA, Fomicheva KA, Osipyants AI, Shkurnikov MY, Pokryshchenko AA, Tonevitsky EA, Vechorko VI. Loop-Mediated Isothermal Amplification as a Promising Method for Mass COVID-19 Diagnostics. APPL BIOCHEM MICRO+ 2021; 57:845-850. [PMID: 34924586 PMCID: PMC8670616 DOI: 10.1134/s0003683821080032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 09/23/2020] [Accepted: 09/25/2020] [Indexed: 11/22/2022]
Abstract
Real-time reverse-transcription polymerase chain reaction (RT-PCR) is currently the most popular method for early COVID-19 diagnostics. However, loop-mediated isothermal amplification (LAMP) is superior to real-time RT-PCR in rapidity and simplicity, since it does not require expensive laboratory equipment and trained personnel. LAMP-based diagnostic kits for COVID-19 testing already exist, but corresponding tests are not yet widely available. The method has great potential for mass application. Here, we discuss the technical and methodological aspects of its widespread adoption.
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Affiliation(s)
- J A Makarova
- Faculty of Biology and Biotechnology, Higher School of Economics National Research University, 101000 Moscow, Russia
| | - K A Fomicheva
- Hertsen Moscow Oncology Research Institute, National Center of Medical Radiological Research, Ministry of Health of the Russian Federation, 125284 Moscow, Russia
| | - A I Osipyants
- Hertsen Moscow Oncology Research Institute, National Center of Medical Radiological Research, Ministry of Health of the Russian Federation, 125284 Moscow, Russia.,Far Eastern Federal University, 690091 Vladivostok, Russia
| | - M Yu Shkurnikov
- Hertsen Moscow Oncology Research Institute, National Center of Medical Radiological Research, Ministry of Health of the Russian Federation, 125284 Moscow, Russia
| | - A A Pokryshchenko
- Faculty of Biology and Biotechnology, Higher School of Economics National Research University, 101000 Moscow, Russia
| | - E A Tonevitsky
- Development Fund, Mendeleev Valley, Innovative Scientific and Technological Center, 125480 Moscow, Russia
| | - V I Vechorko
- Filatov City Clinical Hospital no. 15, Department of Health of Moscow, 111539 Moscow, Russia
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5
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Maltseva DV, Raigorodskaya MP, Zgoda VG, Tonevitsky EA, Knyazev EN. Intracellular Transport of Ribosome-Inactivating Proteins Depends on Annexin 13. DOKL BIOCHEM BIOPHYS 2020; 494:219-221. [PMID: 33119820 DOI: 10.1134/s1607672920040092] [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: 03/19/2020] [Revised: 04/06/2020] [Accepted: 04/06/2020] [Indexed: 11/23/2022]
Abstract
In the present study, we assessed the role of annexin 13 membrane-binding protein (ANXA13) in the intracellular transport of vesicles containing type II ribosome-inactivating proteins (RIP-IIs). A modified human intestinal epithelial cell line HT29 was used, in which the expression of ANXA13 was significantly reduced. The cytotoxic effect of ricin and viscumin was evaluated by modification of 28S ribosome RNA. The observed differences in the activity of toxins on the parental and modified HT29 lines indicate that ANXA13 plays a different role in the intracellular transport of vesicles containing the RIP-IIs.
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Affiliation(s)
- D V Maltseva
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia. .,Scientific Research Center Bioclinicum, Moscow, Russia. .,Faculty of Biology and Biotechnology, National Research University Higher School of Economics, Moscow, Russia.
| | | | - V G Zgoda
- Institute of Biomedical Chemistry, Moscow, Russia
| | - E A Tonevitsky
- Development Fund of the Mendeleev Valley Innovation Science and Technology Center, Moscow, Russia
| | - E N Knyazev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia.
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6
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Maltseva DV, Raigorodskaya MP, Tikhonova OV, Knyazev EN, Tonevitsky EA. Relationship between the Expression Level of PSMD11 and Other Proteasome Proteins with the Activity of Ricin and Viscumin. DOKL BIOCHEM BIOPHYS 2020; 493:198-200. [PMID: 32894464 DOI: 10.1134/s1607672920040080] [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: 03/23/2020] [Revised: 03/25/2020] [Accepted: 03/27/2020] [Indexed: 11/23/2022]
Abstract
The role of proteasome proteins and proteins of the ERAD system in the cytotoxicity of type II ribosome-inactivating proteins ricin and viscumin was investigated. For this, the cell line of colorectal adenocarcinoma HT29, as well as the HT29-sh002 line obtained on its basis, were used. On the basis on the proteome analysis of these lines and the estimation of the proportion of inactivated ribosomes, it was shown that the contribution of the proteasome to the degradation of the catalytic subunits of toxins is different. The role of the Cdc37 co-chaperone in maintaining the stability of A subunit of viscumin in the cytoplasm is shown.
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Affiliation(s)
- D V Maltseva
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia. .,Scientific Research Center Bioclinicum, Moscow, Russia. .,Faculty of Biology and Biotechnology, National Research University Higher School of Economics, Moscow, Russia.
| | | | | | - E N Knyazev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia.
| | - E A Tonevitsky
- Development Fund of the Mendeleev Valley Innovation Science and Technology Center, Moscow, Russia
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7
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Shkurnikov MY, Nersisyan SA, Osepyan AS, Maltseva DV, Knyazev EN. Differences in the Drosha and Dicer Cleavage Profiles in Colorectal Cancer and Normal Colon Tissue Samples. DOKL BIOCHEM BIOPHYS 2020; 493:208-210. [PMID: 32894467 DOI: 10.1134/s1607672920040122] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 03/31/2020] [Accepted: 03/31/2020] [Indexed: 12/22/2022]
Abstract
Human colorectal adenocarcinoma cell line Caco-2 is often used as a model of healthy intestinal epithelium, in particular, in miRNA studies. The work of the enzymes Drosha and Dicer is an integral part of the process of miRNA formation. Inaccuracies in the work of these enzymes lead to a change in the nucleotide sequences of miRNAs with the formation of new isoforms, which, in turn, can change intracellular regulatory mechanisms. In the framework of this study, it was shown that the quantitative estimates of inaccuracies in Drosha and Dicer activity significantly differ between the specimens of normal colon tissue and malignant colorectal tumors.
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Affiliation(s)
- M Yu Shkurnikov
- Hertsen Moscow Oncology Research Center, Branch of the National Medical Research Radiological Center, Ministry of Health of the Russian Federation, Moscow, Russia.
| | - S A Nersisyan
- Faculty of Biology and Biotechnology, National Research University Higher School of Economics, Moscow, Russia.,Faculty of Mechanics and Mathematics, Moscow State University, Moscow, Russia
| | - A Sh Osepyan
- Faculty of Mechanics and Mathematics, Moscow State University, Moscow, Russia
| | - D V Maltseva
- Faculty of Biology and Biotechnology, National Research University Higher School of Economics, Moscow, Russia.,Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - E N Knyazev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia.
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8
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Maltseva DV, Shkurnikov MY, Nersisyan SA, Nikulin SV, Kurnosov AA, Raigorodskaya MP, Osipyants AI, Tonevitsky EA. Hypoxia enhances transcytosis in intestinal enterocytes. BULLETIN OF RUSSIAN STATE MEDICAL UNIVERSITY 2020. [DOI: 10.24075/brsmu.2020.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The integrity of the intestinal epithelial cell lining is crucial for the normal intestinal function. As a rule, intestinal inflammation is associated with additional tissue hypoxia, leading to the loss of epithelial monolayer integrity. However, in the absence of visible damage to the epithelium, there still might be a risk of infection driven by changes in the intracellular transport of bacteria-containing vesicles. The aim of this study was to investigate the effects of hypoxia on transcytosis using a human intestinal enterocyte model. We found that hypoxia enhances transcytosis of the model protein ricin 1.8-fold. The comparative transcriptome and proteome analyses revealed significant changes in the expression of genes involved in intracellular vesicle transport. Specifically, the expression of apoB (the regulator of lipid metabolism) was changed at both protein (6.5-fold) and mRNA (2.1-fold) levels. Further research is needed into the possible mechanism regulating gene expression in intestinal erythrocytes under hypoxic conditions.
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Affiliation(s)
- DV Maltseva
- National Research University Higher School of Economics, Moscow, Russia
| | - MYu Shkurnikov
- National Research University Higher School of Economics, Moscow, Russia; P. A. Hertsen Moscow Oncology Research Center, branch of the National Medical Research Radiology Center, Moscow, Russia
| | - SA Nersisyan
- National Research University Higher School of Economics, Moscow, Russia
| | - SV Nikulin
- National Research University Higher School of Economics, Moscow, Russia
| | - AA Kurnosov
- National Research University Higher School of Economics, Moscow, Russia
| | | | - AI Osipyants
- P. A. Hertsen Moscow Oncology Research Center, branch of the National Medical Research Radiology Center, Moscow, Russia; Far Eastern Federal University, Vladivostok, Russia
| | - EA Tonevitsky
- Fund for Development of Innovative Scientific-Technological Center Mendeleev Valley, Moscow, Russia
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9
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Nikulin SV, Mnafki NA, Shilin SA, Gazizov IN, Maltseva DV. Ribosome Inactivation and the Integrity of the Intestinal Epithelial Barrier. Mol Biol 2018. [DOI: 10.1134/s0026893318040143] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Braun AV, Taranchenko VF, Tikhomirov LA, Grechukhin AP, Rybal’chenko IV. Detection of Ricin in Plant Extracts and Soil Using Liquid Chromatography–High-Resolution Mass Spectrometry. JOURNAL OF ANALYTICAL CHEMISTRY 2018. [DOI: 10.1134/s1061934818080026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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11
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Maltseva DV, Nikulin SV, Sergeeva NS, Tonevitskaya SA, Sakharov DA. Elimination of a Viscumin-Ferromagnetic Nanoparticles Conjugate from the Tumor Nodule in Mice. Bull Exp Biol Med 2017; 163:745-748. [PMID: 29063321 DOI: 10.1007/s10517-017-3894-8] [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: 12/06/2016] [Indexed: 10/18/2022]
Abstract
External magnetic field is characterized by low toxicity and existence of magnetic properties, which contributes to an interest in the development of products from ferromagnetic nanoparticles (FNP) for antitumor therapy. Previously we synthesized a conjugate of ferromagnetic magnetite nanoparticles and viscumin (mistletoe lectin I, MLI), which exhibits the antitumor activity. Studying the pharmacological properties of this conjugate (FNP-MLI) was directed to the evaluation of FNP-MLI elimination after intratumor injection in mice. The elimination rate of FNP-MLI was much lower than that of native plant MLI. The presence of FNP-MLI was not accompanied by undesired changes in the tumor tissue. The use of a FNP-MLI conjugate allowed us to prolong the time of MLI presence in tissues without increasing the dose of exogenous lectin. These features contribute to the prolongation of an immunomodulatory effect of MLI.
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Affiliation(s)
| | | | - N S Sergeeva
- P. A. Hertsen Moscow Oncology Research Center - Branch of National Medical Research Radiology Center, Ministry of Health of the Russian Federation, Moscow, Russia
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12
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Target Cell Glycosylation Determines the Biodistribution of Plant Lectin Viscumin. Bull Exp Biol Med 2017; 163:482-485. [PMID: 28853065 DOI: 10.1007/s10517-017-3833-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Indexed: 10/19/2022]
Abstract
We studied the possibility of using viscumin lectin (MLI) for targeted delivery of antitumor drugs. Affinity of MLI for more than 600 oligosaccharide structures was determined and the glycosylation profiles of cell surface in various mouse tissues were analyzed. It was found that biodistribution of MLI was determined by not only expression of oligosaccharides specifically recognized by the lectin in tissue cells, but also by the structure of glycan in general.
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13
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Maltseva DV, Krainova NA, Khaustova NA, Nikulin SV, Tonevitskaya SA, Poloznikov AA. Biodistribution of Viscumin after Subcutaneous Injection to Mice and In Vitro Modeling of Endoplasmic Reticulum Stress. Bull Exp Biol Med 2017; 163:451-455. [DOI: 10.1007/s10517-017-3826-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Indexed: 12/01/2022]
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14
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Becker B, Schnöder T, Schmitt MJ. Yeast Reporter Assay to Identify Cellular Components of Ricin Toxin A Chain Trafficking. Toxins (Basel) 2016; 8:toxins8120366. [PMID: 27929418 PMCID: PMC5198560 DOI: 10.3390/toxins8120366] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 11/22/2016] [Accepted: 11/30/2016] [Indexed: 01/08/2023] Open
Abstract
RTA, the catalytic A-subunit of the ribosome inactivating A/B toxin ricin, inhibits eukaryotic protein biosynthesis by depurination of 28S rRNA. Although cell surface binding of ricin holotoxin is mainly mediated through its B-subunit (RTB), sole application of RTA is also toxic, albeit to a significantly lower extent, suggesting alternative pathways for toxin uptake and transport. Since ricin toxin trafficking in mammalian cells is still not fully understood, we developed a GFP-based reporter assay in yeast that allows rapid identification of cellular components required for RTA uptake and subsequent transport through a target cell. We hereby show that Ypt6p, Sft2p and GARP-complex components play an important role in RTA transport, while neither the retromer complex nor COPIB vesicles are part of the transport machinery. Analyses of yeast knock-out mutants with chromosomal deletion in genes whose products regulate ADP-ribosylation factor GTPases (Arf-GTPases) and/or retrograde Golgi-to-ER (endoplasmic reticulum) transport identified Sso1p, Snc1p, Rer1p, Sec22p, Erv46p, Gea1p and Glo3p as novel components in RTA transport, suggesting the developed reporter assay as a powerful tool to dissect the multistep processes of host cell intoxication in yeast.
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Affiliation(s)
- Björn Becker
- Molecular and Cell Biology, Department of Biosciences and Center of Human and Molecular Biology (ZHMB), Saarland University, Saarbrücken D-66123, Germany.
| | - Tina Schnöder
- Molecular and Cell Biology, Department of Biosciences and Center of Human and Molecular Biology (ZHMB), Saarland University, Saarbrücken D-66123, Germany.
| | - Manfred J Schmitt
- Molecular and Cell Biology, Department of Biosciences and Center of Human and Molecular Biology (ZHMB), Saarland University, Saarbrücken D-66123, Germany.
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15
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Application of Peak Intensity Analysis to Measurements of Protein Binding to Lipid Vesicles and Erythrocytes Using Fluorescence Correlation Spectroscopy: Dependence on Particle Size. J Membr Biol 2016; 250:77-87. [PMID: 27837242 DOI: 10.1007/s00232-016-9938-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 11/03/2016] [Indexed: 10/20/2022]
Abstract
Fluorescence correlation spectroscopy (FCS) is a sensitive analytical tool for investigation of processes accompanied by changes in the mobility of molecules and complexes. In the present work, peak intensity analysis (PIA) in combination with the solution stirring using FCS setup was applied to explore the interaction between fluorescently labeled protein ligands and corresponding receptors located on membranes. In the system composed of biotinylated liposomes and fluorescently labeled streptavidin as a ligand, PIA allowed us to determine the optimum receptor concentration and demonstrate the essential dependence of the binding efficacy on the length of the linker between the biotin group and the polar head group of the lipid. The binding was dependent on the size of liposomes which was varied by lipid extrusion through filters of different pore diameters. The sensitivity of the method was higher with the liposomes of larger sizes. The PIA approach can be applied not only to liposomes but also to relatively large objects, e.g., erythrocytes or Sepharose beads derivatized with lactose as a receptor for the binding of viscumin and ricin.
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16
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Endosomal acidic pH-induced conformational changes of a cytosol-penetrating antibody mediate endosomal escape. J Control Release 2016; 235:165-175. [DOI: 10.1016/j.jconrel.2016.05.066] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Revised: 05/13/2016] [Accepted: 05/31/2016] [Indexed: 01/11/2023]
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17
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Maintenance of High Cytochrome P450 Expression in HepaRG Cell Spheroids in DMSO-Free Medium. Bull Exp Biol Med 2016; 161:120-4. [DOI: 10.1007/s10517-016-3360-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Indexed: 01/19/2023]
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18
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Khutornenko AA, Gerasimov VM, Sakharov DA. Preparation of Viscumin-Ferromagnetic Particles Conjugate and Study of Its Internalization by Human Glioblastoma A172 Cells. Bull Exp Biol Med 2016; 160:823-6. [PMID: 27165082 DOI: 10.1007/s10517-016-3319-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Indexed: 10/21/2022]
Abstract
Magnetite particles modified by polyethylene glycol with a molecular weight of 3 kDa and hydrodynamic diameter of ~60 nm were used. Plant lectin viscumin covalently immobilized on these nanoparticles retained its binding activity. Immunochemical characteristics of conjugated viscumin were evaluated using monoclonal antibodies. The resultant conjugate with a hydrodynamic diameter of 70 nm was used for studies of binding and internalization by target cells. Binding of viscumin and its conjugate was determined by receptors containing terminal galactose, while intracellular distribution varied. The model system presented in this study can be used for creation of drugs for target therapy.
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Affiliation(s)
| | - V M Gerasimov
- BioClinicum Research and Technology Center, Moscow, Russia
| | - D A Sakharov
- BioClinicum Research and Technology Center, Moscow, Russia.
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19
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Localization and Expression of Nucleoside Transporters ENT1 and ENT2 in Polar Cells of Intestinal Epithelium. Bull Exp Biol Med 2016; 160:771-4. [PMID: 27160886 DOI: 10.1007/s10517-016-3306-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2015] [Indexed: 10/21/2022]
Abstract
Сасо-2 cell line is widely used in in vitro studies of the intestinal wall permeability for drugs, but transport activity of these cells has not been thoroughly studied. We analyzed localization and expression of nucleoside transporters of the ENT family transferring a number of anticancer and antiviral drugs. Immunocytochemical staining revealed apical localization of ENT1 and integral expression of ENT2 in Caco-2 cells. Based on these data and on the value of hypoxanthine uptake by these cells, we created a mathematical model allowing quantification of transporter expression on the apical and basolateral membranes of Caco-2 cells. The discrepancy between gene and protein expression of the transporter complicating prediction of patient's sensitivity to the drug upon individual therapy selection is discussed.
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20
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Intracellular trafficking of AIP56, an NF-κB-cleaving toxin from Photobacterium damselae subsp. piscicida. Infect Immun 2014; 82:5270-85. [PMID: 25287919 DOI: 10.1128/iai.02623-14] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
AIP56 (apoptosis-inducing protein of 56 kDa) is a metalloprotease AB toxin secreted by Photobacterium damselae subsp. piscicida that acts by cleaving NF-κB. During infection, AIP56 spreads systemically and depletes phagocytes by postapoptotic secondary necrosis, impairing the host phagocytic defense and contributing to the genesis of infection-associated necrotic lesions. Here we show that mouse bone marrow-derived macrophages (mBMDM) intoxicated by AIP56 undergo NF-κB p65 depletion and apoptosis. Similarly to what was reported for sea bass phagocytes, intoxication of mBMDM involves interaction of AIP56 C-terminal region with cell surface components, suggesting the existence of a conserved receptor. Biochemical approaches and confocal microscopy revealed that AIP56 undergoes clathrin-dependent endocytosis, reaches early endosomes, and follows the recycling pathway. Translocation of AIP56 into the cytosol requires endosome acidification, and an acidic pulse triggers translocation of cell surface-bound AIP56 into the cytosol. Accordingly, at acidic pH, AIP56 becomes more hydrophobic, interacting with artificial lipid bilayer membranes. Altogether, these data indicate that AIP56 is a short-trip toxin that reaches the cytosol using an acidic-pH-dependent mechanism, probably from early endosomes. Usually, for short-trip AB toxins, a minor pool reaches the cytosol by translocating from endosomes, whereas the rest is routed to lysosomes for degradation. Here we demonstrate that part of endocytosed AIP56 is recycled back and released extracellularly through a mechanism requiring phosphoinositide 3-kinase (PI3K) activity but independent of endosome acidification. So far, we have been unable to detect biological activity of recycled AIP56, thereby bringing into question its biological relevance as well as the importance of the recycling pathway.
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21
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Lu L, Hong W. From endosomes to the trans-Golgi network. Semin Cell Dev Biol 2014; 31:30-9. [PMID: 24769370 DOI: 10.1016/j.semcdb.2014.04.024] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 04/16/2014] [Accepted: 04/16/2014] [Indexed: 12/11/2022]
Abstract
The retrograde trafficking from endosomes to the trans-Golgi network (TGN) is one of the major endocytic pathways to divert proteins and lipids away from lysosomal degradation. Retrograde transported cargos enter the TGN via two itineraries from either the early endosome/recycling endosome or the late endosome and involve various machinery components such as retromer, sorting nexins, clathrin, small GTPases, tethering factors and SNAREs. Recently, the pathway has been recognized for its role in signal transduction, physiology and pathogenesis of human diseases.
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Affiliation(s)
- Lei Lu
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551, Singapore.
| | - Wanjin Hong
- Institute of Molecular and Cell Biology, 61 Biopolis Drive, Proteos, Singapore 138673, Singapore; School of Pharmaceutical Sciences, Xiamen University, Xiamen, People's Republic of China
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22
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Moisenovich MM, Agapov II, Ramonova AA, Ol'shevskaya VA, Kalinin VN, Shtil' AA, Kirpichnikov MP. Effect of ricin on photodynamic damage to the plasma membrane. DOKL BIOCHEM BIOPHYS 2013; 449:84-6. [PMID: 23657653 DOI: 10.1134/s1607672913020087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Indexed: 11/22/2022]
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Legler PM, Brey RN, Smallshaw JE, Vitetta ES, Millard CB. Structure of RiVax: a recombinant ricin vaccine. ACTA CRYSTALLOGRAPHICA SECTION D: BIOLOGICAL CRYSTALLOGRAPHY 2011; 67:826-30. [PMID: 21904036 PMCID: PMC3169317 DOI: 10.1107/s0907444911026771] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2011] [Accepted: 07/05/2011] [Indexed: 01/01/2023]
Abstract
RiVax is a recombinant protein that is currently under clinical development as part of a human vaccine to protect against ricin poisoning. RiVax includes ricin A-chain (RTA) residues 1-267 with two intentional amino-acid substitutions, V76M and Y80A, aimed at reducing toxicity. Here, the crystal structure of RiVax was solved to 2.1 Å resolution and it was shown that it is superposable with that of the ricin toxin A-chain from Ricinus communis with a root-mean-square deviation of 0.6 Å over 258 C(α) atoms. The RiVax structure is also compared with the recently determined structure of another potential ricin-vaccine immunogen, RTA 1-33/44-198 R48C/T77C. Finally, the locations and solvent-exposure of two toxin-neutralizing B-cell epitopes were examined and it was found that these epitopes are within or near regions predicted to be involved in catalysis. The results demonstrate the composition of the RiVax clinical material and will guide ongoing protein-engineering strategies to develop improved immunogens.
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Shahidi-Noghabi S, Van Damme EJM, De Vos WH, Smagghe G. Internalization of Sambucus nigra agglutinins I and II in insect midgut CF-203 cells. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2011; 76:211-222. [PMID: 21254203 DOI: 10.1002/arch.20405] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2010] [Accepted: 10/02/2010] [Indexed: 05/30/2023]
Abstract
In this project, the uptake mechanisms and localization of two lectins from Sambucus nigra, further referred to as S. nigra agglutinin (SNA)-I and SNA-II, into insect midgut CF-203 cells were studied. SNA-I is a chimeric lectin belonging to the class of ribosome-inactivating proteins, whereas SNA-II is a hololectin devoid of enzymatic activity. Internalization of the fluorescein isothiocyanate-labeled lectin was investigated using confocal microscopy. Both lectins were internalized into the cytoplasm of CF-203 cells at similar rates. Preexposure of the insect midgut cells to specific inhibitors of clathrin- and caveolae-mediated endocytosis resulted in an inhibition of lectin uptake in CF-203 cells and caspase-induced cytotoxicity caused by SNA-I and SNA-II, confirming the involvement of both endocytosis pathways. Further studies demonstrated that the uptake mechanism(s) for both lectins required phosphoinositide 3-kinases, but did not depend on the actin cytoskeleton. Since the hololectin SNA-II apparently uses a similar endocytosis pathway as the chimerolectin SNA-I, it can be concluded that the endocytosis process mainly relies on the carbohydrate-binding activity of the lectins under investigation. © 2011 Wiley Periodicals, Inc.
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Affiliation(s)
- Shahnaz Shahidi-Noghabi
- Laboratory of Agrozoology, Department of Crop Protection, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
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25
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Odumosu O, Nicholas D, Yano H, Langridge W. AB toxins: a paradigm switch from deadly to desirable. Toxins (Basel) 2010; 2:1612-45. [PMID: 22069653 PMCID: PMC3153263 DOI: 10.3390/toxins2071612] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2010] [Revised: 06/08/2010] [Accepted: 06/23/2010] [Indexed: 11/16/2022] Open
Abstract
To ensure their survival, a number of bacterial and plant species have evolved a common strategy to capture energy from other biological systems. Being imperfect pathogens, organisms synthesizing multi-subunit AB toxins are responsible for the mortality of millions of people and animals annually. Vaccination against these organisms and their toxins has proved rather ineffective in providing long-term protection from disease. In response to the debilitating effects of AB toxins on epithelial cells of the digestive mucosa, mechanisms underlying toxin immunomodulation of immune responses have become the focus of increasing experimentation. The results of these studies reveal that AB toxins may have a beneficial application as adjuvants for the enhancement of immune protection against infection and autoimmunity. Here, we examine similarities and differences in the structure and function of bacterial and plant AB toxins that underlie their toxicity and their exceptional properties as immunomodulators for stimulating immune responses against infectious disease and for immune suppression of organ-specific autoimmunity.
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Affiliation(s)
- Oludare Odumosu
- Center for Health Disparities and Molecular Medicine, Loma Linda University, School of Medicine, Loma Linda, CA 92354, USA; (O.O.)
- Department of Biochemistry, Loma Linda University, School of Medicine, Loma Linda, CA 92354, USA; (D.N.)
| | - Dequina Nicholas
- Center for Health Disparities and Molecular Medicine, Loma Linda University, School of Medicine, Loma Linda, CA 92354, USA; (O.O.)
- Department of Biochemistry, Loma Linda University, School of Medicine, Loma Linda, CA 92354, USA; (D.N.)
| | - Hiroshi Yano
- Department of Biology, University of Redlands, 1200 East Colton Ave, P.O. Box 3080, Redlands, CA 92373, USA; (H.Y.)
| | - William Langridge
- Center for Health Disparities and Molecular Medicine, Loma Linda University, School of Medicine, Loma Linda, CA 92354, USA; (O.O.)
- Department of Biochemistry, Loma Linda University, School of Medicine, Loma Linda, CA 92354, USA; (D.N.)
- Author to whom correspondence should be addressed; ; Tel.: +1-909-558-1000 (81362); Fax: +1-909-558-0177
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Spooner RA, Smith DC, Easton AJ, Roberts LM, Lord JM. Retrograde transport pathways utilised by viruses and protein toxins. Virol J 2006; 3:26. [PMID: 16603059 PMCID: PMC1524934 DOI: 10.1186/1743-422x-3-26] [Citation(s) in RCA: 118] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2005] [Accepted: 04/07/2006] [Indexed: 11/15/2022] Open
Abstract
A model has been presented for retrograde transport of certain toxins and viruses from the cell surface to the ER that suggests an obligatory interaction with a glycolipid receptor at the cell surface. Here we review studies on the ER trafficking cholera toxin, Shiga and Shiga-like toxins, Pseudomonas exotoxin A and ricin, and compare the retrograde routes followed by these protein toxins to those of the ER trafficking SV40 and polyoma viruses. We conclude that there is in fact no obligatory requirement for a glycolipid receptor, nor even with a protein receptor in a lipid-rich environment. Emerging data suggests instead that there is no common pathway utilised for retrograde transport by all of these pathogens, the choice of route being determined by the particular receptor utilised.
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Affiliation(s)
- Robert A Spooner
- Department of Biological Sciences, University of Warwick, Coventry, CV4 7AL, UK
| | - Daniel C Smith
- Department of Biological Sciences, University of Warwick, Coventry, CV4 7AL, UK
| | - Andrew J Easton
- Department of Biological Sciences, University of Warwick, Coventry, CV4 7AL, UK
| | - Lynne M Roberts
- Department of Biological Sciences, University of Warwick, Coventry, CV4 7AL, UK
| | - J Michael Lord
- Department of Biological Sciences, University of Warwick, Coventry, CV4 7AL, UK
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Saxena SK, Kaur S, George C. Rab4GTPase modulates CFTR function by impairing channel expression at plasma membrane. Biochem Biophys Res Commun 2006; 341:184-91. [PMID: 16413502 DOI: 10.1016/j.bbrc.2005.12.170] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2005] [Accepted: 12/24/2005] [Indexed: 10/25/2022]
Abstract
Cystic fibrosis (CF), an autosomal recessive disorder, is caused by the disruption of biosynthesis or the function of a membrane cAMP-activated chloride channel, CFTR. CFTR regulatory mechanisms include recruitment of channel proteins to the cell surface from intracellular pools and by protein-protein interactions. Rab proteins are small GTPases involved in regulated trafficking controlling vesicle docking and fusion. Rab4 controls recycling events from endosome to the plasma membrane, fusion, and degradation. The colorectal cell line HT-29 natively expresses CFTR and responds to cAMP stimulation with an increase in CFTR-mediated currents. Rab4 over-expression in HT-29 cells inhibits both basal and cAMP-stimulated CFTR-mediated currents. GTPase-deficient Rab4Q67L and GDP locked Rab4S22N both inhibit channel activity, which appears characteristically different. Active status of Rab4 was confirmed by GTP overlay assay, while its expression was verified by Western blotting. The pull-down and immunoprecipitation experiments suggest that Rab4 physically interacts with CFTR through protein-protein interaction. Biotinylation with cell impermeant NHS-Sulfo-SS-Biotin implies that Rab4 impairs CFTR expression at cell surface. The enhanced cytosolic CFTR indicates that Rab4 expression restrains CFTR appearance at the cell membrane. The study suggests that Rab4 regulates the channel through multiple mechanisms that include protein-protein interaction, GTP/GDP exchange, and channel protein trafficking. We propose that Rab4 is a dynamic molecule with a significant role in CFTR function.
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Affiliation(s)
- Sunil K Saxena
- Center for Cell and Molecular Biology, Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, NJ 07030, USA.
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28
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Asan E, Drenckhahn D. News and views in Histochemistry and Cell Biology. Histochem Cell Biol 2004; 122:593-621. [PMID: 15614519 DOI: 10.1007/s00418-004-0735-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/12/2004] [Indexed: 11/29/2022]
Abstract
Advances in histochemical methodology and ingenious applications of novel and improved methods continue to confirm the standing of morphological means and approaches in research efforts, and contribute significantly to increasing our knowledge about structures and functions in all areas of the life sciences from cell biology to pathology. Reports published during recent months documenting this progress are summarized in the present review.
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Affiliation(s)
- Esther Asan
- Department of Anatomy and Cell Biology, University of Wuerzburg, Koellikerstrasse 6, 97070 Wuerzburg, Germany.
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