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Zhang S, Ma Z. trans-Interacting Plasma Membrane Proteins and Binding Partner Identification. J Proteome Res 2024; 23:3322-3331. [PMID: 38937710 DOI: 10.1021/acs.jproteome.4c00289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2024]
Abstract
Plasma membrane proteins (PMPs) play critical roles in a myriad of physiological and disease conditions. A unique subset of PMPs functions through interacting with each other in trans at the interface between two contacting cells. These trans-interacting PMPs (tiPMPs) include adhesion molecules and ligands/receptors that facilitate cell-cell contact and direct communication between cells. Among the tiPMPs, a significant number have apparent extracellular binding domains but remain orphans with no known binding partners. Identification of their potential binding partners is therefore important for the understanding of processes such as organismal development and immune cell activation. While a number of methods have been developed for the identification of protein binding partners in general, very few are applicable to tiPMPs, which interact in a two-dimensional fashion with low intrinsic binding affinities. In this review, we present the significance of tiPMP interactions, the challenges of identifying binding partners for tiPMPs, and the landscape of method development. We describe current avidity-based screening approaches for identifying novel tiPMP binding partners and discuss their advantages and limitations. We conclude by highlighting the importance of developing novel methods of identifying new tiPMP interactions for deciphering the complex protein interactome and developing targeted therapeutics for diseases.
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Affiliation(s)
- Shenyu Zhang
- Department of Biological Sciences, University of Delaware, Newark, Delaware 19716, United States
| | - Zhengyu Ma
- Nemours Children's Hospital, Wilmington, Delaware 19803, United States
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2
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Koh DI, Lee M, Park YS, Shin JS, Kim J, Ryu YS, Lee JH, Bae S, Lee MS, Hong JK, Jeong HR, Choi M, Hong SW, Kim DK, Lee HK, Kim B, Yoon YS, Jin DH. The Immune Suppressor IGSF1 as a Potential Target for Cancer Immunotherapy. Cancer Immunol Res 2024; 12:491-507. [PMID: 38289363 DOI: 10.1158/2326-6066.cir-23-0817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 11/13/2023] [Accepted: 01/25/2024] [Indexed: 04/04/2024]
Abstract
The development of first-generation immune-checkpoint inhibitors targeting PD-1/PD-L1 and CTLA-4 ushered in a new era in anticancer therapy. Although immune-checkpoint blockade therapies have shown clinical success, a substantial number of patients yet fail to benefit. Many studies are under way to discover next-generation immunotherapeutic targets. Immunoglobulin superfamily member 1 (IGSF1) is a membrane glycoprotein proposed to regulate thyroid function. Despite containing 12 immunoglobin domains, a possible role for IGSF1, in immune response, remains unknown. Here, our studies revealed that IGSF1 is predominantly expressed in tumors but not normal tissues, and increased expression is observed in PD-L1low non-small cell lung cancer (NSCLC) cells as compared with PD-L1high cells. Subsequently, we developed and characterized an IGSF1-specific human monoclonal antibody, WM-A1, that effectively promoted antitumor immunity and overcame the limitations of first-generation immune-checkpoint inhibitors, likely via a distinct mechanism of action. We further demonstrated high WM-A1 efficacy in humanized peripheral blood mononuclear cells (PBMC), and syngeneic mouse models, finding additive efficacy in combination with an anti-PD-1 (a well-characterized checkpoint inhibitor). These findings support IGSF1 as an immune target that might complement existing cancer immunotherapeutics.
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Affiliation(s)
- Dong-In Koh
- Wellmarkerbio Co., Ltd., Seoul, Republic of Korea
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea
| | - Minki Lee
- Wellmarkerbio Co., Ltd., Seoul, Republic of Korea
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea
| | - Yoon Sun Park
- Wellmarkerbio Co., Ltd., Seoul, Republic of Korea
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea
- Department of Pharmacology, Asan Medical Institute of Convergence Science and Technology (AMIST), Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jae-Sik Shin
- Wellmarkerbio Co., Ltd., Seoul, Republic of Korea
| | - Joseph Kim
- Wellmarkerbio Co., Ltd., Seoul, Republic of Korea
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea
- Department of Pharmacology, Asan Medical Institute of Convergence Science and Technology (AMIST), Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Yea Seong Ryu
- Wellmarkerbio Co., Ltd., Seoul, Republic of Korea
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea
| | | | | | - Mi So Lee
- Wellmarkerbio Co., Ltd., Seoul, Republic of Korea
| | - Jun Ki Hong
- Wellmarkerbio Co., Ltd., Seoul, Republic of Korea
| | | | - Mingee Choi
- Wellmarkerbio Co., Ltd., Seoul, Republic of Korea
| | | | - Dong Kwan Kim
- Department of Thoracic and Cardiovascular Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Hyun-Kyung Lee
- Department of Internal Medicine, Division of Pulmonary, Allergy, and Critical Care Medicine, Inje University Busan Paik Hospital, Busan, Republic of Korea
| | - Bomi Kim
- Department of Pathology, Inje University Haeundae Paik Hospital, Busan, Republic of Korea
| | - Yoo Sang Yoon
- Department of Thoracic and Cardiovascular Surgery, Busan Paik Hospital, Inje University, Busan, Republic of Korea
| | - Dong-Hoon Jin
- Wellmarkerbio Co., Ltd., Seoul, Republic of Korea
- Department of Convergence Medicine, Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea
- Department of Pharmacology, University of Ulsan College of Medicine, Seoul, Republic of Korea
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3
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Kara S, Nimmerjahn F. Analyzing Fcγ-Receptor Interactions on Monocytes with the Proximity Ligation Assay (PLA). Methods Mol Biol 2024; 2713:377-388. [PMID: 37639137 DOI: 10.1007/978-1-0716-3437-0_26] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/29/2023]
Abstract
Proximity ligation assays (PLA) enable the detection and characterization of protein interactions independent of protein abundance or genetic modifications. This technique exploits both antibody and DNA-binding features, providing high selectivity and sensitivity for protein recognition and visualization of single-protein molecules with high spatial accuracy. Here, we describe the general procedure for a direct PLA on splenic monocytes to analyze FcγRIIb homodimerization. However, this method can be applied to other cells and receptors of interest.
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Affiliation(s)
- Sibel Kara
- Division of Genetics, Department of Biology, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Falk Nimmerjahn
- Division of Genetics, Department of Biology, University of Erlangen-Nürnberg, Erlangen, Germany.
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4
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El-Agamy SE, Guillaud L, Kono K, Wu Y, Terenzio M. FMRP Long-Range Transport and Degradation Are Mediated by Dynlrb1 in Sensory Neurons. Mol Cell Proteomics 2023; 22:100653. [PMID: 37739344 PMCID: PMC10625159 DOI: 10.1016/j.mcpro.2023.100653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 09/10/2023] [Accepted: 09/18/2023] [Indexed: 09/24/2023] Open
Abstract
The fragile X messenger ribonucleoprotein 1 (FMRP) is a multifunctional RNA-binding protein implicated in human neurodevelopmental and neurodegenerative disorders. FMRP mediates the localization and activity-dependent translation of its associated mRNAs through the formation of phase-separated condensates that are trafficked by microtubule-based motors in axons. Axonal transport and localized mRNA translation are critical processes for long-term neuronal survival and are closely linked to the pathogenesis of neurological diseases. FMRP dynein-mediated axonal trafficking is still largely unexplored but likely to constitute a key process underlying FMRP spatiotemporal translational regulation. Here, we show that dynein light chain roadblock 1 (Dynlrb1), a subunit of the dynein complex, is a critical regulator of FMRP function. In sensory axons, FMRP associates with endolysosomal organelles, likely through annexin A11, and is retrogradely trafficked by the dynein complex in a Dynlrb1-dependent manner. Moreover, Dynlrb1 silencing induced FMRP granule accumulation and repressed the translation of microtubule-associated protein 1b, one of its primary mRNA targets. Our findings suggest that Dynlrb1 regulates FMRP function through the control of its transport and targeted degradation.
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Affiliation(s)
- Sara Emad El-Agamy
- Molecular Neuroscience Unit, Okinawa Institute of Science and Technology Graduate University, Kunigami-gun, Okinawa, Japan
| | - Laurent Guillaud
- Molecular Neuroscience Unit, Okinawa Institute of Science and Technology Graduate University, Kunigami-gun, Okinawa, Japan
| | - Keiko Kono
- Membranology Unit, Okinawa Institute of Science and Technology Graduate University, Kunigami-gun, Okinawa, Japan
| | - Yibo Wu
- YCI Laboratory for Next-Generation Proteomics, RIKEN Center of Integrative Medical Sciences, Yokohama, Kanagawa, Japan; Chemical Biology Mass Spectrometry Platform (ChemBioMS), Faculty of Science, University of Geneva, Geneva, Switzerland
| | - Marco Terenzio
- Molecular Neuroscience Unit, Okinawa Institute of Science and Technology Graduate University, Kunigami-gun, Okinawa, Japan.
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Huang WR, Wu YY, Liao TL, Nielsen BL, Liu HJ. Cell Entry of Avian Reovirus Modulated by Cell-Surface Annexin A2 and Adhesion G Protein-Coupled Receptor Latrophilin-2 Triggers Src and p38 MAPK Signaling Enhancing Caveolin-1- and Dynamin 2-Dependent Endocytosis. Microbiol Spectr 2023; 11:e0000923. [PMID: 37097149 PMCID: PMC10269738 DOI: 10.1128/spectrum.00009-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 04/05/2023] [Indexed: 04/26/2023] Open
Abstract
The specifics of cell receptor-modulated avian reovirus (ARV) entry remain unknown. By using a viral overlay protein-binding assay (VOPBA) and an in-gel digestion coupled with liquid chromatography-tandem mass spectrometry (LC-MS/MS), we determined that cell-surface annexin A2 (AnxA2) and adhesion G protein-coupled receptor Latrophilin-2 (ADGRL2) modulate ARV entry. Direct interaction between the ARV σC protein and AnxA2 and ADGRL2 in Vero and DF-1 cells was demonstrated in situ by proximity ligation assays. By using short hairpin RNAs (shRNAs) to silence the endogenous AnxA2 and ADGRL2 genes, ARV entry could be efficiently blocked. A significant decrease in virus yields and the intracellular specific signal for σC protein was observed in Vero cells preincubated with the specific AnxA2 and ADGRL2 monoclonal antibodies, indicating that AnxA2 and ADGRL2 are involved in modulating ARV entry. Furthermore, we found that cells pretreated with the AnxA2/S100A10 heterotetramer (A2t) inhibitor A2ti-1 suppressed ARV-mediated activation of Src and p38 mitogen-activated protein kinase (MAPK), demonstrating that Src and p38 MAPK serve as downstream molecules of cell-surface AnxA2 signaling. Our results reveal that suppression of cell-surface AnxA2 with the A2ti-1 inhibitor increased Csk-Cbp interaction, suggesting that ARV entry suppresses Cbp-mediated relocation of Csk to the membrane, thereby activating Src. Furthermore, reciprocal coimmunoprecipitation assays revealed that σC can interact with signaling molecules, lipid raft, and vimentin. The current study provides novel insights into cell-surface AnxA2- and ADGRL2-modulated cell entry of ARV which triggers Src and p38 MAPK signaling to enhance caveolin-1-, dynamin 2-, and lipid raft-dependent endocytosis. IMPORTANCE By analyzing results from VOPBA and LC-MS/MS, we have determined that cell-surface AnxA2 and ADGRL2 modulate ARV entry. After ARV binding to receptors, Src and p38 MAPK signaling were triggered and, in turn, increased the phosphorylation of caveolin-1 (Tyr14) and upregulated dynamin 2 expression to facilitate caveolin-1-mediated and dynamin 2-dependent endocytosis. In this work, we demonstrated that ARV triggers Src activation by impeding Cbp-mediated relocation of Csk to the membrane in the early stages of the life cycle. This work provides better insight into cell-surface AnxA2 and ADGRL2, which upregulate Src and p38MAPK signaling pathways to enhance ARV entry and productive infection.
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Affiliation(s)
- Wei-Ru Huang
- Institute of Molecular Biology, National Chung Hsing University, Taichung, Taiwan
- iEGG and Animal Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
| | - Yi-Ying Wu
- Institute of Molecular Biology, National Chung Hsing University, Taichung, Taiwan
- iEGG and Animal Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
| | - Tsai-Ling Liao
- Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung, Taiwan
- Ph.D Program in Translational Medicine, National Chung Hsing University, Taichung, Taiwan
- Department of Medical Research, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Brent L. Nielsen
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, Utah, USA
| | - Hung-Jen Liu
- Institute of Molecular Biology, National Chung Hsing University, Taichung, Taiwan
- iEGG and Animal Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
- Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung, Taiwan
- Ph.D Program in Translational Medicine, National Chung Hsing University, Taichung, Taiwan
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan
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6
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Vondrakova J, Frolikova M, Ded L, Cerny J, Postlerova P, Palenikova V, Simonik O, Nahacka Z, Basus K, Valaskova E, Machan R, Pacey A, Holubcova Z, Koubek P, Ezrova Z, Park S, Liu R, Partha R, Clark N, Neuzil J, Ikawa M, Erickson K, Lam KS, Moore H, Komrskova K. MAIA, Fc receptor-like 3, supersedes JUNO as IZUMO1 receptor during human fertilization. SCIENCE ADVANCES 2022; 8:eabn0047. [PMID: 36070373 PMCID: PMC9451160 DOI: 10.1126/sciadv.abn0047] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 07/23/2022] [Indexed: 05/17/2023]
Abstract
Gamete fusion is a critical event of mammalian fertilization. A random one-bead one-compound combinatorial peptide library represented synthetic human egg mimics and identified a previously unidentified ligand as Fc receptor-like 3, named MAIA after the mythological goddess intertwined with JUNO. This immunoglobulin super family receptor was expressed on human oolemma and played a major role during sperm-egg adhesion and fusion. MAIA forms a highly stable interaction with the known IZUMO1/JUNO sperm-egg complex, permitting specific gamete fusion. The complexity of the MAIA isotype may offer a cryptic sexual selection mechanism to avoid genetic incompatibility and achieve favorable fitness outcomes.
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Affiliation(s)
- Jana Vondrakova
- Laboratory of Reproductive Biology, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Michaela Frolikova
- Laboratory of Reproductive Biology, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Lukas Ded
- Laboratory of Reproductive Biology, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Jiri Cerny
- Laboratory of Structural Bioinformatics of Proteins, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Pavla Postlerova
- Laboratory of Reproductive Biology, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
- Department of Veterinary Sciences, Faculty of Agrobiology, Food, and Natural Resources, Czech University of Life Sciences Prague, Kamycka 129, 165 00 Prague, Czech Republic
| | - Veronika Palenikova
- Laboratory of Reproductive Biology, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Ondrej Simonik
- Laboratory of Reproductive Biology, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Zuzana Nahacka
- Laboratory of Molecular Therapy, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Krystof Basus
- Laboratory of Reproductive Biology, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Eliska Valaskova
- Laboratory of Reproductive Biology, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Radek Machan
- Imaging Methods Core Facility at BIOCEV, Faculty of Science, Charles University, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Allan Pacey
- Department of Oncology and Metabolism, University of Sheffield, Medical School, Sheffield S10 2RX, UK
| | - Zuzana Holubcova
- Reprofit International, Clinic of Reproductive Medicine, Brno, Czech Republic
- Department of Histology and Embryology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Pavel Koubek
- ProCrea Swiss IVF Center, Prague, Czech Republic
| | - Zuzana Ezrova
- Laboratory of Molecular Therapy, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Soojin Park
- Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Ruiwu Liu
- Department of Biochemistry and Molecular Medicine, University of California, Davis, School of Medicine, Davis, CA, USA
| | - Raghavendran Partha
- Department of Computational and Systems Biology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Nathan Clark
- Department of Human Genetics, University of Utah, Salt Lake City, UT, USA
| | - Jiri Neuzil
- Laboratory of Molecular Therapy, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
- School of Pharmacy and Medical Science, Griffith University, Parklands Avenue, Southport, Qld 4222, Australia
| | - Masahito Ikawa
- Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Kent Erickson
- Department of Cell Biology and Human Anatomy, University of California, Davis, School of Medicine, Davis, CA, USA
| | - Kit S. Lam
- Department of Biochemistry and Molecular Medicine, University of California, Davis, School of Medicine, Davis, CA, USA
| | - Harry Moore
- Centre for Stem Cell Biology, University of Sheffield, Sheffield S10 2TN, UK
| | - Katerina Komrskova
- Laboratory of Reproductive Biology, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
- Department of Zoology, Faculty of Science, Charles University, Vinicna 7, 128 44 Prague, Czech Republic
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7
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Vanslembrouck B, Chen JH, Larabell C, van Hengel J. Microscopic Visualization of Cell-Cell Adhesion Complexes at Micro and Nanoscale. Front Cell Dev Biol 2022; 10:819534. [PMID: 35517500 PMCID: PMC9065677 DOI: 10.3389/fcell.2022.819534] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Accepted: 03/21/2022] [Indexed: 12/25/2022] Open
Abstract
Considerable progress has been made in our knowledge of the morphological and functional varieties of anchoring junctions. Cell-cell adhesion contacts consist of discrete junctional structures responsible for the mechanical coupling of cytoskeletons and allow the transmission of mechanical signals across the cell collective. The three main adhesion complexes are adherens junctions, tight junctions, and desmosomes. Microscopy has played a fundamental role in understanding these adhesion complexes on different levels in both physiological and pathological conditions. In this review, we discuss the main light and electron microscopy techniques used to unravel the structure and composition of the three cell-cell contacts in epithelial and endothelial cells. It functions as a guide to pick the appropriate imaging technique(s) for the adhesion complexes of interest. We also point out the latest techniques that have emerged. At the end, we discuss the problems investigators encounter during their cell-cell adhesion research using microscopic techniques.
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Affiliation(s)
- Bieke Vanslembrouck
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
- Department of Anatomy, University of San Francisco, San Francisco, CA, United States
- *Correspondence: Bieke Vanslembrouck, ; Jolanda van Hengel,
| | - Jian-hua Chen
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
- Department of Anatomy, University of San Francisco, San Francisco, CA, United States
| | - Carolyn Larabell
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
- Department of Anatomy, University of San Francisco, San Francisco, CA, United States
| | - Jolanda van Hengel
- Medical Cell Biology Research Group, Department of Human Structure and Repair, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
- *Correspondence: Bieke Vanslembrouck, ; Jolanda van Hengel,
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8
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Dahal A, Parajuli P, Singh SS, Shrestha L, Sonju JJ, Shrestha P, Chatzistamou I, Jois S. Targeting protein–protein interaction for immunomodulation: A sunflower trypsin inhibitor analog peptidomimetic suppresses RA progression in CIA model. J Pharmacol Sci 2022; 149:124-138. [PMID: 35641025 PMCID: PMC9208026 DOI: 10.1016/j.jphs.2022.04.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 03/10/2022] [Accepted: 04/18/2022] [Indexed: 11/29/2022] Open
Abstract
Protein–protein interactions (PPI) of co-stimulatory molecules CD2-CD58 are important in the early stage of an immune response, and increased expression of these co-stimulatory molecules is observed in the synovial region of joints in rheumatoid arthritis (RA) patients. A CD2 epitope region that binds to CD58 was grafted on to sunflower trypsin inhibitor (SFTI) template structure to inhibit CD2-CD58 PPI. The peptide was incorporated with an organic moiety dibenzofuran (DBF) in its structure. The designed peptidomimetic was studied for its ability to inhibit CD2-CD58 interactions in vitro, and its thermal and enzymatic stability was evaluated. Stability studies indicated that the grafted peptidomimetic was stable against trypsin cleavage. In vivo studies using the collagen-induced arthritis (CIA) model in mice indicated that the peptidomimetic was able to slow down the progress of arthritis, an autoimmune disease in the mice model. These studies suggest that with the grafting of organic functional groups in the stable peptide template SFTI stabilizes the peptide structure, and these peptides can be used as a template to design stable peptides for therapeutic purposes.
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Affiliation(s)
- Achyut Dahal
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe LA, 71201, USA
| | - Pravin Parajuli
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe LA, 71201, USA
| | - Sitanshu S Singh
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe LA, 71201, USA
| | - Leeza Shrestha
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe LA, 71201, USA
| | - Jafrin Jobayer Sonju
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe LA, 71201, USA
| | - Prajesh Shrestha
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe LA, 71201, USA
| | - Ioulia Chatzistamou
- Department of Pathology, Microbiology & Immunology (PMI), School of Medicine, USC, SC 6439 Garners Ferry Rd, Columbia, SC, 29208, USA
| | - Seetharama Jois
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe LA, 71201, USA.
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9
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Abstract
The dengue virus NS1 is a multifunctional protein that forms part of replication complexes. NS1 is also secreted, as a hexamer, to the extracellular milieu. Circulating NS1 has been associated with dengue pathogenesis by several mechanisms. Cell binding and internalization of soluble NS1 result in endothelial hyperpermeability and in the downregulation of the innate immune response. In this work, we report that the HDL scavenger receptor B1 (SRB1) in human hepatic cells and a scavenger receptor B1-like in mosquito C6/36 cells act as cell surface binding receptors for dengue virus NS1. The presence of the SRB1 on the plasma membrane of C6/36 cells, as well as in Huh7 cells, was demonstrated by confocal microscopy. The internalization of NS1 can be efficiently blocked by anti-SRB1 antibodies, and previous incubation of the cells with HDL significantly reduces NS1 internalization. Significant reduction in NS1 internalization was observed in C6/36 cells transfected with siRNAs specific for SRB1. In addition, the transient expression of SRB1 in Vero cells, which lacks the receptor, allows NS1 internalization in these cells. Direct interaction between soluble NS1 and the SRB1 in Huh7 and C6/36 cells was demonstrated in situ by proximity ligation assays and in vitro by surface plasmon resonance. Finally, results are presented indicating that the SRB1 also acts as a cell receptor for Zika virus NS1. These results demonstrate that dengue virus NS1, a bona fide lipoprotein, usurps the HDL receptor for cell entry and offers explanations for the altered serum lipoprotein homeostasis observed in dengue patients. IMPORTANCE Dengue is the most common viral disease transmitted to humans by mosquitoes. The dengue virus NS1 is a multifunctional glycoprotein necessary for viral replication. NS1 is also secreted as a hexameric lipoprotein and circulates in high concentrations in the sera of patients. Circulating NS1 has been associated with dengue pathogenesis by several mechanisms, including favoring of virus replication in hepatocytes and dendritic cells and disruption of the endothelial glycocalyx leading to hyperpermeability. Those last actions require NS1 internalization. Here, we identify the scavenger cell receptor B1, as the cell-binding receptor for dengue and Zika virus NS1, in cultured liver and in mosquito cells. The results indicate that flavivirus NS1, a bona fide lipoprotein, usurps the human HDL receptor and may offer explanations for the alterations in serum lipoprotein homeostasis observed in dengue patients.
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10
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Suraritdechachai S, Lakkanasirorat B, Uttamapinant C. Molecular probes for cellular imaging of post-translational proteoforms. RSC Chem Biol 2022; 3:201-219. [PMID: 35360891 PMCID: PMC8826509 DOI: 10.1039/d1cb00190f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 01/04/2022] [Indexed: 12/29/2022] Open
Abstract
Specific post-translational modification (PTM) states of a protein affect its property and function; understanding their dynamics in cells would provide deep insight into diverse signaling pathways and biological processes. However, it is not trivial to visualize post-translational modifications in a protein- and site-specific manner, especially in a living-cell context. Herein, we review recent advances in the development of molecular imaging tools to detect diverse classes of post-translational proteoforms in individual cells, and their applications in studying precise roles of PTMs in regulating the function of cellular proteins.
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Affiliation(s)
- Surased Suraritdechachai
- School of Biomolecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC) Rayong Thailand
| | - Benya Lakkanasirorat
- School of Biomolecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC) Rayong Thailand
| | - Chayasith Uttamapinant
- School of Biomolecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC) Rayong Thailand
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11
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Wan Y, Szabo-Rogers HL. Chondrocyte Polarity During Endochondral Ossification Requires Protein-Protein Interactions Between Prickle1 and Dishevelled2/3. J Bone Miner Res 2021; 36:2399-2412. [PMID: 34423861 DOI: 10.1002/jbmr.4428] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 07/19/2021] [Accepted: 08/18/2021] [Indexed: 12/26/2022]
Abstract
The expansion and growth of the endochondral skeleton requires organized cell behaviors that control chondrocyte maturation and oriented division. In other organs, these processes are accomplished through Wnt/planar cell polarity (Wnt/PCP) signaling pathway and require the protein-protein interactions of core components including Prickle1 (PK1) and Dishevelled (DVL). To determine the function of Wnt/PCP signaling in endochondral ossification of the cranial base and limb, we utilized the Prickle1Beetlejuice (Pk1Bj ) mouse line. The Pk1Bj allele has a missense mutation in the PK1 LIM1 domain that results in a hypomorphic protein. Similar to human patients with Robinow syndrome, the Prickle1Bj/Bj mouse mutants lack growth plate expansion resulting in shorter limbs and midfacial hypoplasia. Within the Prickle1Bj/Bj limb and cranial base growth plates we observe precocious maturation of chondrocytes and stalling of terminal differentiation. Intriguingly, we observed that the growth plate chondrocytes have randomized polarity based on the location of the primary cilia and the location of PRICKLE1, DVL2, and DVL3 localization. Importantly, mutant PK1Bj protein has decreased protein-protein interactions with both DVL2 and DVL3 in chondrocytes as revealed by in vivo co-immunoprecipitation and proximity ligation assays. Finally, we propose a model where the interaction between the Prickle1 LIM1 domain and DVL2 and DVL3 contributes to chondrocyte polarity and contributes to proximal-distal outgrowth of endochondral elements. © 2021 American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Yong Wan
- Department of Oral and Craniofacial Sciences, School of Dental Medicine, Center for Craniofacial Regeneration, University of Pittsburgh, Pittsburgh, PA, USA
| | - Heather L Szabo-Rogers
- Department of Oral and Craniofacial Sciences, School of Dental Medicine, Center for Craniofacial Regeneration, University of Pittsburgh, Pittsburgh, PA, USA.,Department of Developmental Biology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA.,McGowan Institute for Regenerative Medicine, Pittsburgh, PA, USA
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12
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Wareham LK, Echevarria FD, Sousa JL, Konlian DO, Dallas G, Formichella CR, Sankaran P, Goralski PJ, Gustafson JR, Sappington RM. Interleukin-6 promotes microtubule stability in axons via Stat3 protein-protein interactions. iScience 2021; 24:103141. [PMID: 34646984 PMCID: PMC8496173 DOI: 10.1016/j.isci.2021.103141] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 06/02/2021] [Accepted: 09/14/2021] [Indexed: 10/25/2022] Open
Abstract
The interleukin-6 (IL-6) family of cytokines and its downstream effector, STAT3, are important mediators of neuronal health, repair, and disease throughout the CNS, including the visual system. Here, we elucidate a transcription-independent mechanism for the neuropoietic activities of IL-6 related to axon development, regeneration, and repair. We examined the outcome of IL-6 deficiency on structure and function of retinal ganglion cell (RGC) axons, which form the optic projection. We found that IL-6 deficiency substantially delays anterograde axon transport in vivo. The reduced rate of axon transport is accompanied by changes in morphology, structure, and post-translational modification of microtubules. In vivo and in vitro studies in mice and swine revealed that IL-6-dependent microtubule phenotypes arise from protein-protein interactions between STAT3 and stathmin. As in tumor cells and T cells, this STAT3-stathmin interaction stabilizes microtubules in RGCs. Thus, this IL-6-STAT3-dependent mechanism for axon architecture is likely a fundamental mechanism for microtubule stability systemically.
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Affiliation(s)
- Lauren K Wareham
- Vanderbilt Eye Institute, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | | | - Jennifer L Sousa
- Department of Neurobiology and Anatomy, Wake Forest School of Medicine, Atrium Health Wake Forest Baptist Medical Center, 1 Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Danielle O Konlian
- Department of Neurobiology and Anatomy, Wake Forest School of Medicine, Atrium Health Wake Forest Baptist Medical Center, 1 Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Gabrielle Dallas
- Vanderbilt Eye Institute, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Cathryn R Formichella
- Vanderbilt Eye Institute, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Priya Sankaran
- Vanderbilt Eye Institute, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Peter J Goralski
- Department of Neurobiology and Anatomy, Wake Forest School of Medicine, Atrium Health Wake Forest Baptist Medical Center, 1 Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Jenna R Gustafson
- Department of Neurobiology and Anatomy, Wake Forest School of Medicine, Atrium Health Wake Forest Baptist Medical Center, 1 Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Rebecca M Sappington
- Department of Neurobiology and Anatomy, Wake Forest School of Medicine, Atrium Health Wake Forest Baptist Medical Center, 1 Medical Center Boulevard, Winston-Salem, NC 27157, USA.,Department of Ophthalmology, Wake Forest School of Medicine, Winston-Salem, NC 27106, USA
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13
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Hegazy M, Cohen-Barak E, Koetsier JL, Najor NA, Arvanitis C, Sprecher E, Green KJ, Godsel LM. Proximity Ligation Assay for Detecting Protein-Protein Interactions and Protein Modifications in Cells and Tissues in Situ. ACTA ACUST UNITED AC 2021; 89:e115. [PMID: 33044803 DOI: 10.1002/cpcb.115] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Biochemical methods can reveal stable protein-protein interactions occurring within cells, but the ability to observe transient events and to visualize the subcellular localization of protein-protein interactions in cells and tissues in situ provides important additional information. The Proximity Ligation Assay® (PLA) offers the opportunity to visualize the subcellular location of such interactions at endogenous protein levels, provided that the probes that recognize the target proteins are within 40 nm. This sensitive technique not only elucidates protein-protein interactions, but also can reveal post-translational protein modifications. The technique is useful even in cases where material is limited, such as when paraffin-embedded clinical specimens are the only available material, as well as after experimental intervention in 2D and 3D model systems. Here we describe the basic protocol for using the commercially available Proximity Ligation Assay™ materials (Sigma-Aldrich, St. Louis, MO), and incorporate details to aid the researcher in successfully performing the experiments. © 2020 Wiley Periodicals LLC. Basic Protocol 1: Proximity ligation assay Support Protocol 1: Antigen retrieval method for formalin-fixed, paraffin-embedded tissues Support Protocol 2: Creation of custom PLA probes using the Duolink™ In Situ Probemaker Kit when commercially available probes are not suitable Basic Protocol 2: Imaging, quantification, and analysis of PLA signals.
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Affiliation(s)
- Marihan Hegazy
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | | | - Jennifer L Koetsier
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Nicole A Najor
- Department of Biology, University of Detroit Mercy, Detroit, Michigan
| | - Constadina Arvanitis
- Center for Advanced Microscopy/Nikon Imaging Center, Northwestern University Feinberg School of Medicine, Chicago, Illinois.,Department of Cell and Developmental Biology, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Eli Sprecher
- Department of Dermatology, Tel Aviv Medical Center, Tel Aviv, Israel.,Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Kathleen J Green
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, Illinois.,Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Lisa M Godsel
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, Illinois.,Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, Illinois
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14
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Singh SS, Mattheolabakis G, Gu X, Withers S, Dahal A, Jois S. A grafted peptidomimetic for EGFR heterodimerization inhibition: Implications in NSCLC models. Eur J Med Chem 2021; 216:113312. [PMID: 33667849 PMCID: PMC8044046 DOI: 10.1016/j.ejmech.2021.113312] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 02/16/2021] [Accepted: 02/18/2021] [Indexed: 02/06/2023]
Abstract
Among the lung cancers, approximately 85% are histologically classified as non-small-cell lung cancer (NSCLC), a leading cause of cancer deaths worldwide. Epidermal growth factor receptors (EGFRs) are known to play a crucial role in lung cancer. HER2 overexpression is detected by immunohistochemistry in 2.4%-38% of NSCLC samples. EGFRs have been targeted with three generations of tyrosine kinase inhibitors (TKIs), and drug resistance has become a major issue; HER2 dimerization with EGFR also plays a major role in the development of resistance to TKI therapy. We have designed grafted peptides to bind to the HER2 extracellular domain (ECD) and inhibit protein-protein interactions of EGFR:HER2 and HER2:HER3. A sunflower trypsin inhibitor (SFTI-1) template was used to graft a peptidomimetic compound. Among several grafted peptides, SFTI-G5 exhibited antiproliferative activity in HER2-positive NSCLC cell lines such as Calu-3 cells with an IC50 value of 0.073 μM. SFTI-G5 was shown to bind to ECD of HER2 and inhibit EGFR:HER2 and HER2:HER3 dimerization and inhibit the phosphorylation of HER2 and downstream signaling proteins. As a proof-of-concept, the in vivo activity of SFTI-G5 was evaluated in two NSCLC mouse models. SFTI-G5 was able to inhibit tumor growth in both models. Furthermore, SFTI-G5 was shown to inhibit EGFR dimerization in tissue samples obtained from in vivo models. These grafted peptides can be used as novel dual inhibitors of EGFR dimerization in NSCLC.
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Affiliation(s)
- Sitanshu S Singh
- School of Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana at Monroe, Monroe, LA, 71201, USA
| | - George Mattheolabakis
- School of Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana at Monroe, Monroe, LA, 71201, USA
| | - Xin Gu
- Department of Pathology, Louisiana State University Health Sciences Center, 1501 Kings Hwy, Shreveport, LA, 71103, USA
| | - Sita Withers
- Department of Veterinary Clinical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA
| | - Achyut Dahal
- School of Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana at Monroe, Monroe, LA, 71201, USA
| | - Seetharama Jois
- School of Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana at Monroe, Monroe, LA, 71201, USA.
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15
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Liu Y, Xiao J, Zhang B, Shelite TR, Su Z, Chang Q, Judy B, Li X, Drelich A, Bei J, Zhou Y, Zheng J, Jin Y, Rossi SL, Tang SJ, Wakamiya M, Saito T, Ksiazek T, Kaphalia B, Gong B. Increased talin-vinculin spatial proximities in livers in response to spotted fever group rickettsial and Ebola virus infections. J Transl Med 2020; 100:1030-1041. [PMID: 32238906 PMCID: PMC7111589 DOI: 10.1038/s41374-020-0420-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 03/12/2020] [Accepted: 03/12/2020] [Indexed: 12/17/2022] Open
Abstract
Talin and vinculin, both actin-cytoskeleton-related proteins, have been documented to participate in establishing bacterial infections, respectively, as the adapter protein to mediate cytoskeleton-driven dynamics of the plasma membrane. However, little is known regarding the potential role of the talin-vinculin complex during spotted fever group rickettsial and Ebola virus infections, two dreadful infectious diseases in humans. Many functional properties of proteins are determined by their participation in protein-protein complexes, in a temporal and/or spatial manner. To resolve the limitation of application in using mouse primary antibodies on archival, multiple formalin-fixed mouse tissue samples, which were collected from experiments requiring high biocontainment, we developed a practical strategic proximity ligation assay (PLA) capable of employing one primary antibody raised in mouse to probe talin-vinculin spatial proximal complex in mouse tissue. We observed an increase of talin-vinculin spatial proximities in the livers of spotted fever Rickettsia australis or Ebola virus-infected mice when compared with mock mice. Furthermore, using EPAC1-knockout mice, we found that deletion of EPAC1 could suppress the formation of spatial proximal complex of talin-vinculin in rickettsial infections. In addition, we observed increased colocalization between spatial proximity of talin-vinculin and filamentous actin-specific phalloidin staining in single survival mouse from an ordinarily lethal dose of rickettsial or Ebola virus infection. These findings may help to delineate a fresh insight into the mechanisms underlying liver specific pathogenesis during infection with spotted fever rickettsia or Ebola virus in the mouse model.
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Affiliation(s)
- Yakun Liu
- 0000 0001 1547 9964grid.176731.5Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555 USA
| | - Jie Xiao
- 0000 0001 1547 9964grid.176731.5Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555 USA
| | - Ben Zhang
- 0000 0001 1547 9964grid.176731.5Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555 USA
| | - Thomas R. Shelite
- 0000 0001 1547 9964grid.176731.5Department of Internal Medicine, Infectious Diseases, University of Texas Medical Branch, Galveston, TX 77555 USA
| | - Zhengchen Su
- 0000 0001 1547 9964grid.176731.5Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555 USA
| | - Qing Chang
- 0000 0001 1547 9964grid.176731.5Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555 USA
| | - Barbara Judy
- 0000 0001 1547 9964grid.176731.5Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555 USA
| | - Xiang Li
- 0000 0001 1547 9964grid.176731.5Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555 USA
| | - Aleksandra Drelich
- 0000 0001 1547 9964grid.176731.5Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555 USA
| | - Jiani Bei
- 0000 0001 1547 9964grid.176731.5Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555 USA ,0000 0004 0532 1428grid.265231.1Present Address: Life Science Department, Tunghai University, Taichung City, Taiwan
| | - Yixuan Zhou
- 0000 0001 1547 9964grid.176731.5Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555 USA ,0000 0004 0369 1599grid.411525.6Present Address: Department of Cardiovascular Surgery, Changhai Hospital, Shanghai, China
| | - Junying Zheng
- 0000 0001 1547 9964grid.176731.5Department of Neuroscience and Cell Biology, University of Texas Medical Branch, Galveston, TX 77555 USA
| | - Yang Jin
- 0000 0004 1936 7558grid.189504.1Division of Pulmonary and Critical Care Medicine, Department of Medicine, Boston University Medical Campus, Boston, MA USA
| | - Shannan L. Rossi
- 0000 0001 1547 9964grid.176731.5Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555 USA
| | - Shao-Jun Tang
- 0000 0001 1547 9964grid.176731.5Department of Neuroscience and Cell Biology, University of Texas Medical Branch, Galveston, TX 77555 USA
| | - Maki Wakamiya
- 0000 0001 1547 9964grid.176731.5Department of Neurology, University of Texas Medical Branch, Galveston, TX 77555 USA
| | - Tais Saito
- 0000 0001 1547 9964grid.176731.5Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555 USA
| | - Thomas Ksiazek
- 0000 0001 1547 9964grid.176731.5Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555 USA
| | - Bhupendra Kaphalia
- 0000 0001 1547 9964grid.176731.5Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555 USA
| | - Bin Gong
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, 77555, USA.
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16
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López-Ramírez G, Sánchez-Zavaleta R, Ávalos-Fuentes A, José Sierra J, Paz-Bermúdez F, Leyva-Gómez G, Segovia Vila J, Cortés H, Florán B. D 2 autoreceptor switches CB 2 receptor effects on [ 3 H]-dopamine release in the striatum. Synapse 2019; 74:e22139. [PMID: 31610050 DOI: 10.1002/syn.22139] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 09/26/2019] [Accepted: 10/10/2019] [Indexed: 12/28/2022]
Abstract
CB2 receptors (CB2 R) are expressed in midbrain neurons. To evidence the control of dopamine release in dorsal striatum by CB2 R, we performed experiments of [3 H]-dopamine release in dorsal striatal slices. We found a paradoxical increase in K+ -induced [3 H]-dopamine release by CB2 R activation with GW 833972A and JWH 133 two selective agonist. To understand the mechanism involved, we tested for a role of the D2 autoreceptor in this effect; because in pallidal structures, the inhibitory effect of CB1 receptors (CB1 R) on GABA release is switched to a stimulatory effect by D2 receptors (D2 R). We found that the blockade of D2 autoreceptors with sulpiride prevented the stimulatory effect of CB2 R activation; in fact, under this condition, CB2 R decreased dopamine release, indicating the role of the D2 autoreceptor in the paradoxical increase. We also found that the effect occurs in nigrostriatal terminals, since lesions with 6-OH dopamine in the middle forebrain bundle prevented CB2 R effects on release. In addition, D2 -CB2 R interaction promoted cAMP accumulation, and the increase in [3 H]-dopamine release was prevented by PKA blockade. D2 -CB2 R coprecipitation and proximity ligation assay studies indicated a close interaction of receptors that could participate in the observed effects. Finally, intrastriatal injection of CB2 R agonist induced contralateral turning in amphetamine-treated rats, which was prevented by sulpiride, indicating the role of the interaction in motor behavior. Thus, these data indicate that the D2 autoreceptor switches, from inhibitory to stimulatory, the CB2 R effects on dopamine release, involving the cAMP → PKA pathway in nigrostriatal terminals.
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Affiliation(s)
- Gabriel López-Ramírez
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de México, Mexico
| | - Rodolfo Sánchez-Zavaleta
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de México, Mexico
| | - Arturo Ávalos-Fuentes
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de México, Mexico
| | - Juan José Sierra
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de México, Mexico
| | - Francisco Paz-Bermúdez
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de México, Mexico
| | - Gerardo Leyva-Gómez
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - José Segovia Vila
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de México, Mexico
| | - Hernán Cortés
- Laboratorio de Medicina Genómica, Departamento de Genética, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Ciudad de México, Mexico
| | - Benjamín Florán
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de México, Mexico
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Single-Cell Analysis of Multiple Steps of Dynamic NF-κB Regulation in Interleukin-1α-Triggered Tumor Cells Using Proximity Ligation Assays. Cancers (Basel) 2019; 11:cancers11081199. [PMID: 31426445 PMCID: PMC6721548 DOI: 10.3390/cancers11081199] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 08/02/2019] [Accepted: 08/09/2019] [Indexed: 12/21/2022] Open
Abstract
The frequently occurring heterogeneity of cancer cells and their functional interaction with immune cells in the tumor microenvironment raises the need to study signaling pathways at the single cell level with high precision, sensitivity, and spatial resolution. As aberrant NF-κB activity has been implicated in almost all steps of cancer development, we analyzed the dynamic regulation and activation status of the canonical NF-κB pathway in control and IL-1α-stimulated individual cells using proximity ligation assays (PLAs). These systematic experiments allowed the visualization of the dynamic dissociation and re-formation of endogenous p65/IκBα complexes and the nuclear translocation of NF-κB p50/p65 dimers. PLA combined with immunostaining for p65 or with NFKBIA single molecule mRNA-FISH facilitated the analysis of (i) further levels of the NF-κB pathway, (i) its functionality for downstream gene expression, and (iii) the heterogeneity of the NF-κB response in individual cells. PLA also revealed the interaction between NF-κB p65 and the P-body component DCP1a, a new p65 interactor that contributes to efficient p65 NF-κB nuclear translocation. In summary, these data show that PLA technology faithfully mirrored all aspects of dynamic NF-κB regulation, thus allowing molecular diagnostics of this key pathway at the single cell level which will be required for future precision medicine.
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18
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Dovgan I, Koniev O, Kolodych S, Wagner A. Antibody-Oligonucleotide Conjugates as Therapeutic, Imaging, and Detection Agents. Bioconjug Chem 2019; 30:2483-2501. [PMID: 31339691 DOI: 10.1021/acs.bioconjchem.9b00306] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Antibody-oligonucleotide conjugates (AOCs) are a novel class of synthetic chimeric biomolecules that has been continually gaining traction in different fields of modern biotechnology. This is mainly due to the unique combination of the properties of their two constituents, exceptional targeting abilities and antibody biodistribution profiles, in addition to an extensive scope of oligonucleotide functional and structural roles. Combining these two classes of biomolecules in one chimeric construct has therefore become an important milestone in the development of numerous biotechnological applications, including imaging (DNA-PAINT), detection (PLA, PEA), and therapeutics (targeted siRNA/antisense delivery). Numerous synthetic approaches have been developed to access AOCs ranging from stochastic chemical bioconjugation to site-specific conjugation with reactive handles, introduced into antibody sequences through protein engineering. This Review gives a general overview of the current status of AOC applications with a specific emphasis on the synthetic methods used for their preparation. The reported synthetic techniques are discussed in terms of their practical aspects and limitations. The importance of the development of novel methods for the facile generation of AOCs possessing a defined constitution is highlighted as a priority in AOC research to ensure the advance of their new applications.
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Affiliation(s)
- Igor Dovgan
- Bio-Functional Chemistry (UMR 7199), LabEx Medalis , University of Strasbourg , 74 Route du Rhin , 67400 Illkirch-Graffenstaden , France
| | - Oleksandr Koniev
- Syndivia SAS , 650 Boulevard Gonthier d'Andernach , 67400 Illkirch-Graffenstaden , France
| | - Sergii Kolodych
- Syndivia SAS , 650 Boulevard Gonthier d'Andernach , 67400 Illkirch-Graffenstaden , France
| | - Alain Wagner
- Bio-Functional Chemistry (UMR 7199), LabEx Medalis , University of Strasbourg , 74 Route du Rhin , 67400 Illkirch-Graffenstaden , France
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19
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Squarzanti DF, Sorrentino R, Landini MM, Chiesa A, Pinato S, Rocchio F, Mattii M, Penengo L, Azzimonti B. Human papillomavirus type 16 E6 and E7 oncoproteins interact with the nuclear p53-binding protein 1 in an in vitro reconstructed 3D epithelium: new insights for the virus-induced DNA damage response. Virol J 2018; 15:176. [PMID: 30445982 PMCID: PMC6240266 DOI: 10.1186/s12985-018-1086-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 10/22/2018] [Indexed: 12/28/2022] Open
Abstract
Background Despite vaccination and screening measures, anogenital cancer, mainly promoted by HPV16 oncoproteins, still represents the fourth tumor and the second cause of death among women. Cell replication fidelity is the result of the host DNA damage response (DDR). Unlike many DNA viruses that promote their life cycle through the DDR inactivation, HR-HPVs encourage cells proliferation despite the DDR turned on. Why and how it occurs has been only partially elucidated. During HPV16 infection, E6 links and degrades p53 via the binding to the E6AP LXXLL sequence; unfortunately, E6 direct role in the DDR response has not clearly identified yet. Similarly, E7 increases DDR by competing with E2F1-pRb interaction, thus leading to the inactivation of pRb, and promotion, E2F1 mediated, of DDR genes translation, by binding to the pRb-like proteins CBP/p300 and p107, that also harbour LXXLL sequence, and via the interaction and activation of several DDR proteins. Methods To gain information regarding E6 and E7 contribution in DDR activation, we produced an in vitro 3D HPV16-E6E7 infected epithelium, already consolidated study model for HPVs, and validated it by assessing H&E staining and BrdU, HPV16 DNA, E6E7 proteins and γH2A.X/53BP1 double-strand break (DSBs) sensors expression; then we made an immuno-colocalization of E6 and E7 with cyclin E2 and B1. Since 53BP1, like E6 and E7, also binds p53 and pRb, we supposed their possible direct binding. To explore this hypothesis, we performed a double immunofluorescence of E6 and E7 with 53BP1, a sequence analysis of 53BP1 within its BRCT2 domain and then an in situ PLA within CaSki, E6E7HPV16 NHEKs and the 3D model. Results The in vitro epithelium resembled the histology and the events typical of in vivo infected tissues. E6E7HPV16 were both expressed in basal and differentiated strata and induced H2A.X phosphorylation and 53BP1 increment into nuclear foci. After highlighting E6 and E7 co-expression with 53BP1 and a LKVLL sequence within the 53BP1 BRCT2 domain, we demonstrated the bindings via the PLA technique. Conclusions Our results reinforce E6 and E7 role in cellular function control providing potentially new insights into the activity of this tumor virus.
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Affiliation(s)
- Diletta Francesca Squarzanti
- Laboratory of applied Microbiology, Department of Health Sciences, University of Piemonte Orientale (UPO), Via Solaroli 17, 28100, Novara, Italy
| | - Rita Sorrentino
- Laboratory of Biomedical Materials, Department of Health Sciences, University of Piemonte Orientale (UPO), Novara, Italy
| | - Manuela Miriam Landini
- Laboratory of applied Microbiology, Department of Health Sciences, University of Piemonte Orientale (UPO), Via Solaroli 17, 28100, Novara, Italy
| | - Andrea Chiesa
- Laboratory of applied Microbiology, Department of Health Sciences, University of Piemonte Orientale (UPO), Via Solaroli 17, 28100, Novara, Italy
| | - Sabrina Pinato
- Laboratory of Molecular Biology, Department of Pharmaceutical Sciences, University of Piemonte Orientale (UPO), Novara, Italy
| | - Francesca Rocchio
- Laboratory of Molecular Biology, Department of Pharmaceutical Sciences, University of Piemonte Orientale (UPO), Novara, Italy
| | - Martina Mattii
- Laboratory of applied Microbiology, Department of Health Sciences, University of Piemonte Orientale (UPO), Via Solaroli 17, 28100, Novara, Italy
| | - Lorenza Penengo
- Institute of Molecular Cancer Research, University of Zurich, Zurich, Switzerland
| | - Barbara Azzimonti
- Laboratory of applied Microbiology, Department of Health Sciences, University of Piemonte Orientale (UPO), Via Solaroli 17, 28100, Novara, Italy. .,Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM, Firenze, Italy- Local Unit of Piemonte Orientale, UPO, Novara, Italy.
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