1
|
Wang YW, Zuo JC, Chen C, Li XH. Post-translational modifications and immune responses in liver cancer. Front Immunol 2023; 14:1230465. [PMID: 37609076 PMCID: PMC10441662 DOI: 10.3389/fimmu.2023.1230465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 06/26/2023] [Indexed: 08/24/2023] Open
Abstract
Post-translational modification (PTM) refers to the covalent attachment of functional groups to protein substrates, resulting in structural and functional changes. PTMs not only regulate the development and progression of liver cancer, but also play a crucial role in the immune response against cancer. Cancer immunity encompasses the combined efforts of innate and adaptive immune surveillance against tumor antigens, tumor cells, and tumorigenic microenvironments. Increasing evidence suggests that immunotherapies, which harness the immune system's potential to combat cancer, can effectively improve cancer patient prognosis and prolong the survival. This review presents a comprehensive summary of the current understanding of key PTMs such as phosphorylation, ubiquitination, SUMOylation, and glycosylation in the context of immune cancer surveillance against liver cancer. Additionally, it highlights potential targets associated with these modifications to enhance the response to immunotherapies in the treatment of liver cancer.
Collapse
Affiliation(s)
| | | | - Chong Chen
- Academy of Medical Engineering and Translational Medicine, Medical College of Tianjin University, Tianjin, China
| | - Xiao-Hong Li
- Academy of Medical Engineering and Translational Medicine, Medical College of Tianjin University, Tianjin, China
| |
Collapse
|
2
|
Sedanza MG, Yoshida A, Kim HJ, Yamaguchi K, Osatomi K, Satuito CG. Identification and Characterization of the Larval Settlement Pheromone Protein Components in Adult Shells of Crassostrea gigas: A Novel Function of Shell Matrix Proteins. Int J Mol Sci 2022; 23:ijms23179816. [PMID: 36077215 PMCID: PMC9456362 DOI: 10.3390/ijms23179816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/26/2022] [Accepted: 08/26/2022] [Indexed: 11/30/2022] Open
Abstract
The global decline of natural oyster populations emphasizes the need to improve our understanding of their biology. Understanding the role of chemical cues from conspecifics on how oysters occupy appropriate substrata is crucial to learning about their evolution, population dynamics, and chemical communication. Here, a novel role of a macromolecular assembly of shell matrix proteins which act as Crassostrea gigas Settlement Pheromone Protein Components in adult shells is demonstrated as the biological cue responsible for gregarious settlement on conspecifics. A bioassay-guided fractionation approach aided by biochemical and molecular analyses reveals that Gigasin-6 isoform X1 and/or X2 isolated from adult shells is the major inducing cue for larval settlement and may also play a role in postlarva–larva settlement interactions. Other isolated Stains-all-stainable acidic proteins may function as a co-factor and a scaffold/structural framework for other matrix proteins to anchor within this assembly and provide protection. Notably, conspecific cue-mediated larval settlement induction in C. gigas presents a complex system that requires an interplay of different glycans, disulfide bonds, amino acid groups, and phosphorylation crosstalk for recognition. These results may find application in the development of oyster aquacultures which could help recover declining marine species and as targets of anti-fouling agents.
Collapse
Affiliation(s)
- Mary Grace Sedanza
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, Nagasaki 852-8521, Japan
- Institute of Aquaculture, College of Fisheries and Ocean Sciences, University of the Philippines Visayas, Miagao, Iloilo 5023, Philippines
- Correspondence: or ; Tel.: +81-95-819-2853
| | - Asami Yoshida
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, Nagasaki 852-8521, Japan
| | - Hee-Jin Kim
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, Nagasaki 852-8521, Japan
| | - Kenichi Yamaguchi
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, Nagasaki 852-8521, Japan
| | - Kiyoshi Osatomi
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, Nagasaki 852-8521, Japan
| | - Cyril Glenn Satuito
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, Nagasaki 852-8521, Japan
- Organization for Marine Science and Technology, Nagasaki University, Nagasaki 852-8521, Japan
| |
Collapse
|
3
|
Ahn MY, Yoon HJ, Hwang JS, Jin JM, Park KK. The role of noble bumblebee (Bombus terrestris) queen glycosaminoglycan in aged rat and gene expression profile based on DNA microarray. Toxicol Res 2021; 37:85-98. [PMID: 33489860 DOI: 10.1007/s43188-020-00065-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 09/08/2020] [Accepted: 09/23/2020] [Indexed: 01/10/2023] Open
Abstract
Glycosaminoglycans (GAGs) have been used to diminish the deleterious effects associated with aging by preventing the destruction of cartilage, bone, discs, and skin. The objective of this study was to evaluate the anti-aging effect of a newly prepared GAG derived from bumblebee (Bombus terrestris) queen (BTQG, 10 mg/kg). Gryllus bimaculatus (Gb, cricket) GAG (GbG, 10 mg/kg) or glucosamine sulfate (GS) was used as a positive control. N-glycans derived from BTQG contained hexose polymers including Hex4HexNAc3Pen1, Hex9, and Hex5HexNAc3dHex2 as the primary components. The GAGs were intraperitoneally administered to 14-month-old aged rats for 1 month. BTQG reduced the serum levels of free fatty acid, alkaline phosphatase (ALP), glutamate pyruvate transaminase (GPT), creatinine, and blood urea nitrogen (BUN), showing hepato-and renal-protective effects with anti-lipidemic activities comparable to GS. The changes of gene expression profile of liver tissue by cDNA microarray showed the simultaneous upregulation of 36 genes in the BTQG-treated rat group compared to the control group, including secretogranin II (Scg2), Activator (AP)-1-regulated protein-related reactive oxygen species (ROS) DNA damage repair, metallothionein 1a, and alpha-2 macroglobulin. The BTQG-treated group also showed 417 downregulated genes, including vimentin, moesin, and mitochondrial carbonic anhydrase. Insect glycosaminoglycan from the bumblebee (B. terrestris) queen may help decelerate the aging stage by ameliorating the aging effects on circulation, and liver and kidney function.
Collapse
Affiliation(s)
- Mi Young Ahn
- Department of Agricultural Biology, National Institute of Agricultural Sciences, Rural Development Administration (RDA), 166 Nongsaengmyung-Ro, Iseo-Myun, Wanju-Gun, 55365 Korea
| | - Hyung Joo Yoon
- Department of Agricultural Biology, National Institute of Agricultural Sciences, Rural Development Administration (RDA), 166 Nongsaengmyung-Ro, Iseo-Myun, Wanju-Gun, 55365 Korea
| | - Jae Sam Hwang
- Department of Agricultural Biology, National Institute of Agricultural Sciences, Rural Development Administration (RDA), 166 Nongsaengmyung-Ro, Iseo-Myun, Wanju-Gun, 55365 Korea
| | - Jang Mi Jin
- Korean Basic Science Institute, Ochang, 28119 Korea
| | | |
Collapse
|
4
|
Role of Host-Mediated Post-Translational Modifications (PTMs) in RNA Virus Pathogenesis. Int J Mol Sci 2020; 22:ijms22010323. [PMID: 33396899 PMCID: PMC7796338 DOI: 10.3390/ijms22010323] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 12/11/2020] [Accepted: 12/16/2020] [Indexed: 12/17/2022] Open
Abstract
Being opportunistic intracellular pathogens, viruses are dependent on the host for their replication. They hijack host cellular machinery for their replication and survival by targeting crucial cellular physiological pathways, including transcription, translation, immune pathways, and apoptosis. Immediately after translation, the host and viral proteins undergo a process called post-translational modification (PTM). PTMs of proteins involves the attachment of small proteins, carbohydrates/lipids, or chemical groups to the proteins and are crucial for the proteins’ functioning. During viral infection, host proteins utilize PTMs to control the virus replication, using strategies like activating immune response pathways, inhibiting viral protein synthesis, and ultimately eliminating the virus from the host. PTM of viral proteins increases solubility, enhances antigenicity and virulence properties. However, RNA viruses are devoid of enzymes capable of introducing PTMs to their proteins. Hence, they utilize the host PTM machinery to promote their survival. Proteins from viruses belonging to the family: Togaviridae, Flaviviridae, Retroviridae, and Coronaviridae such as chikungunya, dengue, zika, HIV, and coronavirus are a few that are well-known to be modified. This review discusses various host and virus-mediated PTMs that play a role in the outcome during the infection.
Collapse
|
5
|
González-Morelo KJ, Vega-Sagardía M, Garrido D. Molecular Insights Into O-Linked Glycan Utilization by Gut Microbes. Front Microbiol 2020; 11:591568. [PMID: 33224127 PMCID: PMC7674204 DOI: 10.3389/fmicb.2020.591568] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 10/20/2020] [Indexed: 12/16/2022] Open
Abstract
O-linked glycosylation is a post-translational modification found mainly in eukaryotic cells, which covalently attaches oligosaccharides to secreted proteins in certain threonine or serine residues. Most of O-glycans have N-acetylgalactosamine (GalNAc) as a common core. Several glycoproteins, such as mucins (MUCs), immunoglobulins, and caseins are examples of O-glycosylated structures. These glycans are further elongated with other monosaccharides and sulfate groups. Some of them could be found in dairy foods, while others are produced endogenously, in both cases interacting with the gut microbiota. Interestingly, certain gut microbes can access, release, and consume O-linked glycans as a carbon source. Among these, Akkermansia muciniphila, Bifidobacterium bifidum, and Bacteroides thetaiotaomicron are prominent O-linked glycan utilizers. Their consumption strategies include specialized α-fucosidases and α-sialidases, in addition to endo-α-N-acetylgalactosaminidases that release galacto-N-biose (GNB) from peptides backbones. O-linked glycan utilization by certain gut microbes represents an important niche that allows them to predominate and modulate host responses such as inflammation. Here, we focus on the distinct molecular mechanisms of consumption of O-linked GalNAc glycans by prominent gut microbes, especially from mucin and casein glycomacropeptide (GMP), highlighting the potential of these structures as emerging prebiotics.
Collapse
Affiliation(s)
| | | | - Daniel Garrido
- Department of Chemical and Bioprocess Engineering, School of Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile
| |
Collapse
|
6
|
Navarro Quiroz E, Chavez-Estrada V, Macias-Ochoa K, Ayala-Navarro MF, Flores-Aguilar AS, Morales-Navarrete F, de la Cruz Lopez F, Gomez Escorcia L, Musso CG, Aroca Martinez G, Gonzales Torres H, Diaz Perez A, Cadena Bonfanti A, Sarmiento Gutierrez J, Meza J, Diaz Arroyo E, Bello Lemus Y, Ahmad M, Navarro Quiroz R. Epigenetic Mechanisms and Posttranslational Modifications in Systemic Lupus Erythematosus. Int J Mol Sci 2019; 20:E5679. [PMID: 31766160 PMCID: PMC6888206 DOI: 10.3390/ijms20225679] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 10/08/2019] [Accepted: 10/19/2019] [Indexed: 12/15/2022] Open
Abstract
The complex physiology of eukaryotic cells is regulated through numerous mechanisms, including epigenetic changes and posttranslational modifications. The wide-ranging diversity of these mechanisms constitutes a way of dynamic regulation of the functionality of proteins, their activity, and their subcellular localization as well as modulation of the differential expression of genes in response to external and internal stimuli that allow an organism to respond or adapt to accordingly. However, alterations in these mechanisms have been evidenced in several autoimmune diseases, including systemic lupus erythematosus (SLE). The present review aims to provide an approach to the current knowledge of the implications of these mechanisms in SLE pathophysiology.
Collapse
Affiliation(s)
- Elkin Navarro Quiroz
- Faculty of Basic and Biomedical Sciences, Universidad Simon Bolivar, Barranquilla 080001, Colombia; (F.d.l.C.L.); (L.G.E.); (G.A.M.); (H.G.T.); (A.D.P.); (A.C.B.); (J.S.G.); (J.M.); (Y.B.L.); (M.A.)
| | - Valeria Chavez-Estrada
- School of Medicine, Universidad de Guadalajara, Jalisco 44100, Mexico; (V.C.-E.); (K.M.-O.); (M.F.A.-N.)
| | - Karime Macias-Ochoa
- School of Medicine, Universidad de Guadalajara, Jalisco 44100, Mexico; (V.C.-E.); (K.M.-O.); (M.F.A.-N.)
| | | | | | | | - Fernando de la Cruz Lopez
- Faculty of Basic and Biomedical Sciences, Universidad Simon Bolivar, Barranquilla 080001, Colombia; (F.d.l.C.L.); (L.G.E.); (G.A.M.); (H.G.T.); (A.D.P.); (A.C.B.); (J.S.G.); (J.M.); (Y.B.L.); (M.A.)
| | - Lorena Gomez Escorcia
- Faculty of Basic and Biomedical Sciences, Universidad Simon Bolivar, Barranquilla 080001, Colombia; (F.d.l.C.L.); (L.G.E.); (G.A.M.); (H.G.T.); (A.D.P.); (A.C.B.); (J.S.G.); (J.M.); (Y.B.L.); (M.A.)
| | - Carlos G. Musso
- Department of Nephrology, Hospital Italiano de Buenos Aires, Buenos Aires B1675, Argentina;
| | - Gustavo Aroca Martinez
- Faculty of Basic and Biomedical Sciences, Universidad Simon Bolivar, Barranquilla 080001, Colombia; (F.d.l.C.L.); (L.G.E.); (G.A.M.); (H.G.T.); (A.D.P.); (A.C.B.); (J.S.G.); (J.M.); (Y.B.L.); (M.A.)
- Department of Nephrology, Clinica de la Costa, Barranquilla 080001, Colombia
| | - Henry Gonzales Torres
- Faculty of Basic and Biomedical Sciences, Universidad Simon Bolivar, Barranquilla 080001, Colombia; (F.d.l.C.L.); (L.G.E.); (G.A.M.); (H.G.T.); (A.D.P.); (A.C.B.); (J.S.G.); (J.M.); (Y.B.L.); (M.A.)
| | - Anderson Diaz Perez
- Faculty of Basic and Biomedical Sciences, Universidad Simon Bolivar, Barranquilla 080001, Colombia; (F.d.l.C.L.); (L.G.E.); (G.A.M.); (H.G.T.); (A.D.P.); (A.C.B.); (J.S.G.); (J.M.); (Y.B.L.); (M.A.)
- Faculty of Health Sciences, Corporacion Universitaria Rafael Nuñez, Cartagena de Indias 130001, Colombia
| | - Andres Cadena Bonfanti
- Faculty of Basic and Biomedical Sciences, Universidad Simon Bolivar, Barranquilla 080001, Colombia; (F.d.l.C.L.); (L.G.E.); (G.A.M.); (H.G.T.); (A.D.P.); (A.C.B.); (J.S.G.); (J.M.); (Y.B.L.); (M.A.)
- Department of Nephrology, Clinica de la Costa, Barranquilla 080001, Colombia
| | - Joany Sarmiento Gutierrez
- Faculty of Basic and Biomedical Sciences, Universidad Simon Bolivar, Barranquilla 080001, Colombia; (F.d.l.C.L.); (L.G.E.); (G.A.M.); (H.G.T.); (A.D.P.); (A.C.B.); (J.S.G.); (J.M.); (Y.B.L.); (M.A.)
- Department of Nephrology, Clinica de la Costa, Barranquilla 080001, Colombia
| | - Jainy Meza
- Faculty of Basic and Biomedical Sciences, Universidad Simon Bolivar, Barranquilla 080001, Colombia; (F.d.l.C.L.); (L.G.E.); (G.A.M.); (H.G.T.); (A.D.P.); (A.C.B.); (J.S.G.); (J.M.); (Y.B.L.); (M.A.)
| | | | - Yesit Bello Lemus
- Faculty of Basic and Biomedical Sciences, Universidad Simon Bolivar, Barranquilla 080001, Colombia; (F.d.l.C.L.); (L.G.E.); (G.A.M.); (H.G.T.); (A.D.P.); (A.C.B.); (J.S.G.); (J.M.); (Y.B.L.); (M.A.)
| | - Mostapha Ahmad
- Faculty of Basic and Biomedical Sciences, Universidad Simon Bolivar, Barranquilla 080001, Colombia; (F.d.l.C.L.); (L.G.E.); (G.A.M.); (H.G.T.); (A.D.P.); (A.C.B.); (J.S.G.); (J.M.); (Y.B.L.); (M.A.)
| | - Roberto Navarro Quiroz
- CMCC—Centro de Matemática, Computação e Cognição, Laboratório do Biología Computacional e Bioinformática—LBCB, Universidade Federal do ABC, Sao Paulo 01023, Brazil;
| |
Collapse
|
7
|
Abhinav K, Feng L, Morrison E, Jung Y, Dear J, Takahashi S, Heck MMS. The conserved metalloprotease invadolysin is present in invertebrate haemolymph and vertebrate blood. Biol Open 2019; 8:bio.044073. [PMID: 31615765 PMCID: PMC6899020 DOI: 10.1242/bio.044073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
We identified invadolysin, a novel essential metalloprotease, for functions in chromosome structure, cell proliferation and migration. Invadolysin also plays an important metabolic role in insulin signalling and is the only protease known to localise to lipid droplets, the main lipid storage organelle in the cell. In silico examination of the protein sequence of invadolysin predicts not only protease and lipase catalytic motifs, but also post-translational modifications and the secretion of invadolysin. Here we show that the protease motif of invadolysin is important for its role in lipid accumulation, but not in glycogen accumulation. The lipase motif does not appear to be functionally important for the accumulation of lipids or glycogen. Post-translational modifications likely contribute to modulating the level, localisation or activity of invadolysin. We identified a secreted form of invadolysin in the soluble fraction of invertebrate hemolymph (where we observe sexually dimorphic forms) and also vertebrate plasma, including in the extracellular vesicle fraction. Biochemical analysis for various post-translational modifications demonstrated that secreted invadolysin is both N- and O-glycosylated, but not apparently GPI-linked. The discovery of invadolysin in the extracellular milieu suggests a role for invadolysin in normal organismal physiology. Summary: In this study, we show that the conserved metalloprotease invadolysin is present in invertebrate hemolymph and vertebrate blood, suggesting the protein may function in organismal physiology.
Collapse
Affiliation(s)
- Kanishk Abhinav
- University/BHF Center for Cardiovascular Science, University of Edinburgh, Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh EH16 4TJ, UK
| | - Linda Feng
- University/BHF Center for Cardiovascular Science, University of Edinburgh, Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh EH16 4TJ, UK
| | - Emma Morrison
- University/BHF Center for Cardiovascular Science, University of Edinburgh, Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh EH16 4TJ, UK
| | - Yunshin Jung
- Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, Ibaraki 305-0006, Japan
| | - James Dear
- University/BHF Center for Cardiovascular Science, University of Edinburgh, Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh EH16 4TJ, UK
| | - Satoru Takahashi
- Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, Ibaraki 305-0006, Japan
| | - Margarete M S Heck
- University/BHF Center for Cardiovascular Science, University of Edinburgh, Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh EH16 4TJ, UK
| |
Collapse
|
8
|
Andreeva N, Ledova L, Ryasanova L, Kulakovskaya T, Eldarov M. The acid phosphatase Pho5 of Saccharomyces cerevisiae is not involved in polyphosphate breakdown. Folia Microbiol (Praha) 2019; 64:867-873. [PMID: 30937822 DOI: 10.1007/s12223-019-00702-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Accepted: 03/25/2019] [Indexed: 01/05/2023]
Abstract
Inorganic polyphosphate is involved in architecture and functioning of yeast cell wall. The strain of Saccharomyces cerevisiae constitutively overexpressing acid phosphatase Pho5 was constructed for studying the Pho5 properties and its possible participation in polyphosphate metabolism. The parent strain was transformed by the vector carrying the PHO5 gene under a strong constitutive promoter of glyceraldehyde-3-phosphate dehydrogenase of S. cerevisiae. The culture liquid and biomass of transformant strain contained approximately equal total acid phosphatase activity. The levels of acid phosphatase activity associated with the cell wall and culture liquid increased in the transformant strain compared to the parent strain ~ 10- and 20-fold, respectively. The Pho5 preparation (specific activity of 46 U/mg protein and yield of 95 U/L) was obtained from culture liquid of overproducing strain. The overproducing strain had no changes in polyphosphate level. The activity of Pho5 with long-chained polyP was negligible. We concluded that Pho5 is not involved in polyphosphate metabolism. Purified Pho5 showed a similar activity with p-nitrophenylphosphate, ATP, ADP, glycerophosphate, and glucose-6-phosphate. The substrate specificity of Pho5 and its extracellular localization suggest its function: the hydrolysis of organic compounds with phosphoester bonds at phosphate limitation.
Collapse
Affiliation(s)
- Nadeshda Andreeva
- FRC Pushchino Center for Biological Research, Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, pr. Nauki 5, Pushchino, Moscow region, 142290, Russia
| | - Larisa Ledova
- FRC Pushchino Center for Biological Research, Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, pr. Nauki 5, Pushchino, Moscow region, 142290, Russia
| | - Lubov Ryasanova
- FRC Pushchino Center for Biological Research, Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, pr. Nauki 5, Pushchino, Moscow region, 142290, Russia
| | - Tatiana Kulakovskaya
- FRC Pushchino Center for Biological Research, Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, pr. Nauki 5, Pushchino, Moscow region, 142290, Russia.
| | - Michail Eldarov
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky prosp. 33-2, Moscow, 119071, Russia
| |
Collapse
|
9
|
Camperi J, De Cock B, Pichon V, Combes A, Guibourdenche J, Fournier T, Vander Heyden Y, Mangelings D, Delaunay N. First characterizations by capillary electrophoresis of human Chorionic Gonadotropin at the intact level. Talanta 2019; 193:77-86. [DOI: 10.1016/j.talanta.2018.09.095] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 09/20/2018] [Accepted: 09/24/2018] [Indexed: 12/15/2022]
|
10
|
Tan HL, Yong C, Tan BZ, Fong WJ, Padmanabhan J, Chin A, Ding V, Lau A, Zheng L, Bi X, Yang Y, Choo A. Conservation of oncofetal antigens on human embryonic stem cells enables discovery of monoclonal antibodies against cancer. Sci Rep 2018; 8:11608. [PMID: 30072783 PMCID: PMC6072701 DOI: 10.1038/s41598-018-30070-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 06/26/2018] [Indexed: 12/26/2022] Open
Abstract
Monoclonal antibodies (mAbs) are used as targeted therapies against cancers. These mAbs kill cancer cells via various mechanisms of actions. In this study, human embryonic stem cells (hESCs) was used as the immunogen to generate a panel of antibodies. From this panel of mAbs, A19 was found to bind both hESC and various cancer cell lines. The antigen target of A19 was identified as Erbb-2 and glycan analysis showed that A19 binds to a N-glycan epitope on the antigen. A19 was elucidated to internalize into cancer cells following binding to Erbb-2 and hence developed as an antibody-drug conjugate (ADC). Using ADC as the mechanism of action, A19 was able to kill cancer cells in vitro and delayed the onset of tumour formation in mice xenograft model. When compared to Herceptin, A19 binds to different isoforms of Erbb-2 and does not compete with Herceptin for the same epitope. Hence, A19 has the potential to be developed as an alternative targeted therapeutic agent for cancers expressing Erbb-2.
Collapse
MESH Headings
- Animals
- Antibodies, Monoclonal, Murine-Derived/immunology
- Antibodies, Monoclonal, Murine-Derived/pharmacology
- Antigens, Neoplasm/immunology
- Antineoplastic Agents, Immunological/immunology
- Antineoplastic Agents, Immunological/pharmacology
- Cell Line, Tumor
- Female
- Human Embryonic Stem Cells/immunology
- Humans
- Mice, Inbred BALB C
- Mice, Nude
- Neoplasms, Experimental/drug therapy
- Neoplasms, Experimental/immunology
- Neoplasms, Experimental/pathology
- Xenograft Model Antitumor Assays
Collapse
Affiliation(s)
- Heng Liang Tan
- Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore, Singapore.
| | - Charlene Yong
- Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore, Singapore
| | - Bao Zhu Tan
- Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore, Singapore
| | - Wey Jia Fong
- Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore, Singapore
| | - Jayanthi Padmanabhan
- Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore, Singapore
| | - Angela Chin
- Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore, Singapore
| | - Vanessa Ding
- Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore, Singapore
| | - Ally Lau
- Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore, Singapore
| | - Lu Zheng
- Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore, Singapore
| | - Xuezhi Bi
- Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore, Singapore
| | - Yuansheng Yang
- Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore, Singapore
| | - Andre Choo
- Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore, Singapore
| |
Collapse
|
11
|
Liew PX, Kim JH, Lee WY, Kubes P. Antibody-dependent fragmentation is a newly identified mechanism of cell killing in vivo. Sci Rep 2017; 7:10515. [PMID: 28874772 PMCID: PMC5585239 DOI: 10.1038/s41598-017-10420-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 08/08/2017] [Indexed: 01/21/2023] Open
Abstract
The prevailing view is that therapeutic antibodies deplete cells through opsonization and subsequent phagocytosis, complement-dependent lysis or antibody-dependent cellular-cytotoxicity. We used high resolution in vivo imaging to identify a new antibody-dependent cell death pathway where Kupffer cells ripped large fragments off crawling antibody-coated iNKT cells. This antibody-dependent fragmentation process resulted in lethality and depletion of crawling iNKT cells in the liver sinusoids and lung capillaries. iNKT cell depletion was Fcy-receptor dependent and required iNKT cell crawling. Blood, spleen or joint iNKT cells that did not crawl were not depleted. The antibody required high glycosylation for sufficiently strong binding of the iNKT cells to the Fc Receptors on Kupffer cells. Using an acetaminophen overdose model, this approach functionally depleted hepatic iNKT cells and affected the severity of liver injury. This study reveals a new mechanism of antibody-dependent killing in vivo and raises implications for the design of new antibodies for cancer and auto-reactive immune cells.
Collapse
Affiliation(s)
- Pei Xiong Liew
- Snyder institute of Chronic Diseases, University of Calgary, Calgary, Canada
| | - Jung Hwan Kim
- Snyder institute of Chronic Diseases, University of Calgary, Calgary, Canada
| | - Woo-Yong Lee
- Snyder institute of Chronic Diseases, University of Calgary, Calgary, Canada
| | - Paul Kubes
- Snyder institute of Chronic Diseases, University of Calgary, Calgary, Canada.
| |
Collapse
|
12
|
The human digestive tract has proteases capable of gluten hydrolysis. Mol Metab 2017; 6:693-702. [PMID: 28702325 PMCID: PMC5485308 DOI: 10.1016/j.molmet.2017.05.008] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 05/09/2017] [Accepted: 05/15/2017] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVE To identify, purify, and characterize the proteins responsible for glutenase activity in the feces of healthy subjects and patients with celiac disease (CD). METHODS Sixteen subjects were included in this study; 8 were healthy with no known food intolerances, and 8 were treated CD patients on a gluten-free diet. Fecal samples were homogenized, and precipitated proteins were purified by chromatography. Glutenase activity was evaluated by bioassays, zymography, and high-performance liquid chromatography with immunogenic 33-mer, 19-mer, and 13-mer gliadin peptides. RESULTS The gastrointestinal elastase 3B (CEL3B), elastase 2A (CEL2A), and carboxypeptidase A1 (CBPA1) enzymes degraded human gluten. These proteins fully hydrolyzed 13-mer and 19-mer gliadin peptides that trigger immune-mediated enteropathy in individuals genetically predisposed to CD and partially digested a 33-mer. Feces from patients with CD showed more glutenase activity than feces from individuals without CD (171-466% higher). Peptidase activity against the gliadin peptides also increased in patients with CD. CONCLUSION The digestive tracts of patients with CD and healthy subjects have enzymatic machinery needed for gluten degradation. Patients with CD showed more gluten hydrolysis than did healthy individuals, although, in both cases, a fraction of 33-mer peptide remained intact. Gliadin peptides derived from gastrointestinal digestion, especially the 33-mer, can potentially be used by commensal microbiota from both CD-positive and CD-negative individuals, and differences in bacterial hydrolysis can modify its immunogenic capacity.
Collapse
|
13
|
van Teeseling MCF, Maresch D, Rath CB, Figl R, Altmann F, Jetten MSM, Messner P, Schäffer C, van Niftrik L. The S-Layer Protein of the Anammox Bacterium Kuenenia stuttgartiensis Is Heavily O-Glycosylated. Front Microbiol 2016; 7:1721. [PMID: 27847504 PMCID: PMC5088730 DOI: 10.3389/fmicb.2016.01721] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2016] [Accepted: 10/13/2016] [Indexed: 01/11/2023] Open
Abstract
Anaerobic ammonium oxidation (anammox) bacteria are a distinct group of Planctomycetes that are characterized by their unique ability to perform anammox with nitrite to dinitrogen gas in a specialized organelle. The cell of anammox bacteria comprises three membrane-bound compartments and is surrounded by a two-dimensional crystalline S-layer representing the direct interaction zone of anammox bacteria with the environment. Previous results from studies with the model anammox organism Kuenenia stuttgartiensis suggested that the protein monomers building the S-layer lattice are glycosylated. In the present study, we focussed on the characterization of the S-layer protein glycosylation in order to increase our knowledge on the cell surface characteristics of anammox bacteria. Mass spectrometry (MS) analysis showed an O-glycan attached to 13 sites distributed over the entire 1591-amino acid S-layer protein. This glycan is composed of six monosaccharide residues, of which five are N-acetylhexosamine (HexNAc) residues. Four of these HexNAc residues have been identified as GalNAc. The sixth monosaccharide in the glycan is a putative dimethylated deoxyhexose. Two of the HexNAc residues were also found to contain a methyl group, thereby leading to an extensive degree of methylation of the glycan. This study presents the first characterization of a glycoprotein in a planctomycete and shows that the S-layer protein Kustd1514 of K. stuttgartiensis is heavily glycosylated with an O-linked oligosaccharide which is additionally modified by methylation. S-layer glycosylation clearly contributes to the diversification of the K. stuttgartiensis cell surface and can be expected to influence the interaction of the bacterium with other cells or abiotic surfaces.
Collapse
Affiliation(s)
- Muriel C. F. van Teeseling
- Department of Microbiology, Institute for Water and Wetland Research, Faculty of Science, Radboud UniversityNijmegen, Netherlands
| | - Daniel Maresch
- Division of Biochemistry, Department of Chemistry, University of Natural Resources and Life SciencesVienna, Austria
| | - Cornelia B. Rath
- NanoGlycobiology Unit, Department of NanoBiotechnology, University of Natural Resources and Life SciencesVienna, Austria
| | - Rudolf Figl
- Division of Biochemistry, Department of Chemistry, University of Natural Resources and Life SciencesVienna, Austria
| | - Friedrich Altmann
- Division of Biochemistry, Department of Chemistry, University of Natural Resources and Life SciencesVienna, Austria
| | - Mike S. M. Jetten
- Department of Microbiology, Institute for Water and Wetland Research, Faculty of Science, Radboud UniversityNijmegen, Netherlands
| | - Paul Messner
- NanoGlycobiology Unit, Department of NanoBiotechnology, University of Natural Resources and Life SciencesVienna, Austria
| | - Christina Schäffer
- NanoGlycobiology Unit, Department of NanoBiotechnology, University of Natural Resources and Life SciencesVienna, Austria
| | - Laura van Niftrik
- Department of Microbiology, Institute for Water and Wetland Research, Faculty of Science, Radboud UniversityNijmegen, Netherlands
| |
Collapse
|
14
|
Production, Characterization, and Biological Evaluation of Well-Defined IgG1 Fc Glycoforms as a Model System for Biosimilarity Analysis. J Pharm Sci 2016; 105:559-574. [PMID: 26869419 DOI: 10.1016/j.xphs.2015.11.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 10/27/2015] [Accepted: 10/29/2015] [Indexed: 12/18/2022]
Abstract
Four different well-defined IgG1 Fc glycoforms are proposed as a model system to examine important biological and physicochemical features for protein drug biosimilar analyses. The IgG1 Fc glycoforms were produced by yeast expression combined with in vitro enzymatic synthesis as a series of sequentially truncated high-mannose IgG1 Fc glycoforms with an anticipated range of biological activity and structural stability. Initial characterization with mass spectrometry, SDS-PAGE, size exclusion HPLC, and capillary isoelectric focusing confirmed that the glycoproteins are overall highly similar with the only major difference being glycosylation state. Binding to the activating Fc receptor, FcγRIIIa was used to evaluate the potential biological activity of the IgG1 Fc glycoproteins. Two complementary methods using biolayer interferometry, 1 with protein G-immobilized IgG1 Fc and the other with streptavidin-immobilized FcγRIIIa, were developed to assess FcγRIIIa affinity in kinetic binding studies. The high-mannose IgG1 Fc and Man5-IgG1 Fc glycoforms were highly similar to one another with high affinity for FcγRIIIa, whereas GlcNAc-Fc had weak affinity, and the nonglycosylated N297Q-Fc had no measurable affinity for FcγRIIIa. These 4 IgG1 Fc glycoforms were also evaluated in terms of physical and chemical stability profiles and then used as a model system to mathematically assess overall biosimilarity, as described in a series of companion articles.
Collapse
|
15
|
Gornik O, Keser T, Lauc G. Separation and Purification of Glycans Out of Glycoproteins. SPRINGER PROTOCOLS HANDBOOKS 2016. [DOI: 10.1007/978-1-4939-3185-9_27] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|