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Jiang H, Sun Y, Li F, Yu X, Lei S, Du S, Wu T, Jiang X, Zhu J, Wang J, Ji Y, Li N, Feng X, Gu J, Han W, Zeng L, Lei L. Enolase of Streptococcus suis serotype 2 promotes biomolecular condensation of ribosomal protein SA for HBMECs apoptosis. BMC Biol 2024; 22:33. [PMID: 38331785 PMCID: PMC10854124 DOI: 10.1186/s12915-024-01835-y] [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: 06/27/2023] [Accepted: 01/24/2024] [Indexed: 02/10/2024] Open
Abstract
BACKGROUND Ribosomal protein SA (RPSA) of human brain microvascular endothelial cells (HBMECs) can transfer from the cytosol to the cell surface and act as a receptor for some pathogens, including Streptococcus suis serotype 2 (SS2), a zoonotic pathogen causing meningitis in pigs and humans. We previously reported that SS2 virulence factor enolase (ENO) binds to RPSA on the cell surface of HBMECs and induces apoptosis. However, the mechanism that activates RPSA translocation to the cell surface and induces ENO-mediated HBMEC apoptosis is unclear. RESULTS Here, we show that RPSA localization and condensation on the host cell surface depend on its internally disordered region (IDR). ENO binds to the IDR of RPSA and promotes its interaction with RPSA and vimentin (VIM), which is significantly suppressed after 1,6-Hexanediol (1,6-Hex, a widely used tool to disrupt phase separation) treatment, indicating that ENO incorporation and thus the concentration of RPSA/VIM complexes via co-condensation. Furthermore, increasing intracellular calcium ions (Ca2+) in response to SS2 infection further facilitates the liquid-like condensation of RPSA and aggravates ENO-induced HBMEC cell apoptosis. CONCLUSIONS Together, our study provides a previously underappreciated molecular mechanism illuminating that ENO-induced RPSA condensation activates the migration of RPSA to the bacterial cell surface and stimulates SS2-infected HBMEC death and, potentially, disease progression. This study offers a fresh avenue for investigation into the mechanism by which other harmful bacteria infect hosts via cell surfaces' RPSA.
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Affiliation(s)
- Hexiang Jiang
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Yi Sun
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Fengyang Li
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Xibing Yu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Siyu Lei
- Department of Respiratory Medicine, Center for Infectious Diseases and Pathogen Biology, Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, The First Hospital of Jilin University, Changchun, 130021, China
| | - Sulan Du
- Department of Veterinary Medicine, College of Animal Science, Yangtze University, Jingzhou, 434023, China
| | - Tong Wu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Xuan Jiang
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Junhui Zhu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Jun Wang
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Yalu Ji
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Na Li
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Xin Feng
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Jingmin Gu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Wenyu Han
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Lei Zeng
- Bethune Institute of Epigenetic Medicine, The First Hospital of Jilin University, Changchun, Jilin, China.
- International Center of Future Science, Jillin University, Changchun, Jilin, China.
| | - Liancheng Lei
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China
- Department of Veterinary Medicine, College of Animal Science, Yangtze University, Jingzhou, 434023, China
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Guo N, Zhou H, Zhang Q, Fu Y, Jia Q, Gan X, Wang Y, He S, Li C, Tao Z, Liu J, Jia E. Exploration and bioinformatic prediction for profile of mRNA bound to circular RNA BTBD7_hsa_circ_0000563 in coronary artery disease. BMC Cardiovasc Disord 2024; 24:71. [PMID: 38267845 PMCID: PMC10809658 DOI: 10.1186/s12872-024-03711-7] [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: 06/18/2023] [Accepted: 01/04/2024] [Indexed: 01/26/2024] Open
Abstract
BACKGROUND As a novel circRNA, BTBD7_hsa_circ_0000563 has not been fully investigated in coronary artery disease (CAD). Our aim is to reveal the possible functional role and regulatory pathway of BTBD7_hsa_circ_0000563 in CAD via exploring genes combined with BTBD7_hsa_circ_0000563. METHODS A total of 45 peripheral blood mononuclear cell (PBMC) samples of CAD patients were enrolled. The ChIRP-RNAseq assay was performed to directly explore genes bound to BTBD7_hsa_circ_0000563. The Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis were conducted to reveal possible functions of these genes. The interaction network was constructed by the STRING database and the Cytoscape software. The Cytoscape software were used again to identify clusters and hub genes of genes bound to BTBD7_hsa_circ_0000563. The target miRNAs of hub genes were predicted via online databases. RESULTS In this study, a total of 221 mRNAs directly bound to BTBD7_hsa_circ_0000563 were identified in PBMCs of CAD patients via ChIRP-RNAseq. The functional enrichment analysis revealed that these mRNAs may participate in translation and necroptosis. Moreover, the interaction network showed that there may be a close relationship between these mRNAs. Eight clusters can be further subdivided from the interaction network. RPS3 and RPSA were identified as hub genes and hsa-miR-493-5p was predicted to be the target miRNA of RPS3. CONCLUSIONS BTBD7_hsa_circ_0000563 and mRNAs directly bound to it may influence the initiation and progression of CAD, among which RPS3 and RPSA may be hub genes. These findings may provide innovative ideas for further research on CAD.
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Affiliation(s)
- Ning Guo
- Suzhou Hospital of Integrated Traditional Chinese and Western Medicine, Suzhou, 215101, Jiangsu Province, China
| | - Hanxiao Zhou
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Nanjing Medical University, Guangzhou Road 300, Nanjing, 210029, Jiangsu Province, China
| | - Qian Zhang
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Nanjing Medical University, Guangzhou Road 300, Nanjing, 210029, Jiangsu Province, China
| | - Yahong Fu
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Nanjing Medical University, Guangzhou Road 300, Nanjing, 210029, Jiangsu Province, China
| | - Qiaowei Jia
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Nanjing Medical University, Guangzhou Road 300, Nanjing, 210029, Jiangsu Province, China
| | - Xiongkang Gan
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Nanjing Medical University, Guangzhou Road 300, Nanjing, 210029, Jiangsu Province, China
| | - Yanjun Wang
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Nanjing Medical University, Guangzhou Road 300, Nanjing, 210029, Jiangsu Province, China
| | - Shu He
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Nanjing Medical University, Guangzhou Road 300, Nanjing, 210029, Jiangsu Province, China
| | - Chengcheng Li
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Nanjing Medical University, Guangzhou Road 300, Nanjing, 210029, Jiangsu Province, China
| | - Zhengxian Tao
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Nanjing Medical University, Guangzhou Road 300, Nanjing, 210029, Jiangsu Province, China
| | - Jun Liu
- Department of Cardiology, Jurong City People's Hospital, Ersheng Road 66, Jurong, 212400, Jiangsu Province, China.
| | - Enzhi Jia
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Nanjing Medical University, Guangzhou Road 300, Nanjing, 210029, Jiangsu Province, China.
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Baron N, Purushotham R, Pullaiahgari D, Bose P, Zarivach R, Shapira M. LeishIF4E2 is a cap-binding protein that plays a role in Leishmania cell cycle progression. FASEB J 2024; 38:e23367. [PMID: 38095329 DOI: 10.1096/fj.202301665r] [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: 08/16/2023] [Revised: 11/14/2023] [Accepted: 11/27/2023] [Indexed: 12/18/2023]
Abstract
Leishmania encode six paralogs of the cap-binding protein eIF4E and five eIF4G candidates, forming unique complexes. Two cap-binding proteins, LeishIF4E1 and LeishIF4E2, do not bind any identified LeishIF4Gs, thus their roles are intriguing. Here, we combine structural prediction, proteomic analysis, and interaction assays to shed light on LeishIF4E2 function. A nonconserved C-terminal extension was identified through structure prediction and sequence alignment. m7 GTP-binding assays involving both recombinant and transgenic LeishIF4E2 with and without the C-terminal extension revealed that this extension functions as a regulatory gate, modulating the cap-binding activity of LeishIF4E2. The interactomes of the two LeishIF4E2 versions were investigated, highlighting the role of the C-terminal extension in binding to SLBP2. SLBP2 is known to interact with a stem-loop structure in the 3' UTRs of histone mRNAs. Consistent with the predicted inhibitory effect of SLBP2 on histone expression in Xenopus laevis, a hemizygous deletion mutant of LeishIF4E2, exhibited an upregulation of several histones. We therefore propose that LeishIF4E2 is involved in histone expression, possibly through its interaction between SLBP2 and LeishIF4E2, thus affecting cell cycle progression. In addition, cell synchronization showed that LeishIF4E2 expression decreased during the S-phase, when histones are known to be synthesized. Previous studies in T. brucei also highlighted an association between TbEIF4E2 and SLBP2, and further reported on an interaction between TbIF4E2 and S-phase-abundant mRNAs. Our results show that overexpression of LeishIF4E2 correlates with upregulation of cell cycle and chromosome maintenance proteins. Along with its effect on histone expression, we propose that LeishIF4E2 is involved in cell cycle progression.
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Affiliation(s)
- Nofar Baron
- Department of Life Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Rajaram Purushotham
- Department of Life Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | | | - Priyanka Bose
- Department of Life Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Raz Zarivach
- Department of Life Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Michal Shapira
- Department of Life Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
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4
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Wang X, Zhu J, Zhang D, Liu G. Ribosomal control in RNA virus-infected cells. Front Microbiol 2022; 13:1026887. [PMID: 36419416 PMCID: PMC9677555 DOI: 10.3389/fmicb.2022.1026887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 10/19/2022] [Indexed: 11/09/2022] Open
Abstract
Viruses are strictly intracellular parasites requiring host cellular functions to complete their reproduction cycle involving virus infection of host cell, viral genome replication, viral protein translation, and virion release. Ribosomes are protein synthesis factories in cells, and viruses need to manipulate ribosomes to complete their protein synthesis. Viruses use translation initiation factors through their own RNA structures or cap structures, thereby inducing ribosomes to synthesize viral proteins. Viruses also affect ribosome production and the assembly of mature ribosomes, and regulate the recognition of mRNA by ribosomes, thereby promoting viral protein synthesis and inhibiting the synthesis of host antiviral immune proteins. Here, we review the remarkable mechanisms used by RNA viruses to regulate ribosomes, in particular, the mechanisms by which RNA viruses induce the formation of specific heterogeneous ribosomes required for viral protein translation. This review provides valuable insights into the control of viral infection and diseases from the perspective of viral protein synthesis.
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5
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Zhang L, Lin J, Weng M, Wen Y, Zhang Y, Deng W. RPLP1, an NS4B-interacting protein, enhances production of CSFV through promoting translation of viral genome. Virulence 2022; 13:370-386. [PMID: 35129423 PMCID: PMC8824197 DOI: 10.1080/21505594.2022.2033500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Classical swine fever virus (CSFV), the etiological agent of classical swine fever (CSF), causes serious financial losses to the pig industry. Using yeast two-hybrid screening, we have previously identified ribosomal protein RPLP1 as a potential binding partner of CSFV NS4B. In this study, the interaction between host RPLP1 and CSFV NS4B was further characterized by co-immunoprecipitation (co-IP), glutathione S-transferase (GST) pulldown, and confocal microscopy. In addition, lentivirus-mediated shRNA knockdown of RPLP1 drastically attenuated CSFV growth, while stable overexpression of RPLP1 markedly enhanced CSFV production. Moreover, cellular RPLP1 expression was found to be significantly up-regulated along with CSFV infection. Dual-luciferase reporter assay showed that depletion of RPLP1 had no effects on the activity of CSFV internal ribosome entry site (IRES). In the first life cycle of CSFV, further studies revealed that RPLP1 depletion did not influence the intracellular viral RNA abundance but diminished the intracellular and extracellular progeny virus titers as well as the viral E2 protein expression, which indicates that RPLP1 is crucial for CSFV genome translation. In summary, this study demonstrated that RPLP1 interacts with CSFV NS4B and enhances virus production via promoting translation of viral genome.
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Affiliation(s)
- Longxiang Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Jihui Lin
- School of Nursing, Southwest Medical University, Luzhou, Sichuan, China
| | - Maoyang Weng
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Ying Wen
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Yanming Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Wen Deng
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
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6
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Abstract
Arboviruses are medically important arthropod-borne viruses that cause a range of diseases in humans from febrile illness to arthritis, encephalitis and hemorrhagic fever. Given their transmission cycles, these viruses face the challenge of replicating in evolutionarily divergent organisms that can include ticks, flies, mosquitoes, birds, rodents, reptiles and primates. Furthermore, their cell attachment receptor utilization may be affected by the opposing needs for generating high and sustained serum viremia in vertebrates such that virus particles are efficiently collected during a hematophagous arthropod blood meal but they must also bind sufficiently to cellular structures on divergent organisms such that productive infection can be initiated and viremia generated. Sulfated polysaccharides of the glycosaminoglycan (GAG) groups, primarily heparan sulfate (HS), have been identified as cell attachment moieties for many arboviruses. Original identification of GAG binding as a phenotype of arboviruses appeared to involve this attribute arising solely as a consequence of adaptation of virus isolates to growth in cell culture. However, more recently, naturally circulating strains of at least one arbovirus, eastern equine encephalitis, have been shown to bind HS efficiently and the GAG binding phenotype continues to be associated with arbovirus infection in published studies. If GAGs are attachment receptors for many naturally circulating arboviruses, this could lead to development of broad-spectrum antiviral therapies through blocking of the virus-GAG interaction. This review summarizes the available data for GAG/HS binding as a phenotype of naturally circulating arbovirus strains emphasizing the importance of avoiding tissue culture amplification and artifactual phenotypes during their isolation.
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Affiliation(s)
- Maria D H Alcorn
- Center for Vaccine Research, Department of Immunology, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - William B Klimstra
- Center for Vaccine Research, Department of Immunology, University of Pittsburgh, Pittsburgh, PA 15261, USA
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7
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Sun Q, Li N, Jia L, Guo W, Jiang H, Liu B, Bao C, Liu M, Huang J, Lei L. Ribosomal Protein SA-Positive Neutrophil Elicits Stronger Phagocytosis and Neutrophil Extracellular Trap Formation and Subdues Pro-Inflammatory Cytokine Secretion Against Streptococcus suis Serotype 2 Infection. Front Immunol 2021; 11:585399. [PMID: 33603733 PMCID: PMC7884477 DOI: 10.3389/fimmu.2020.585399] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 12/15/2020] [Indexed: 01/21/2023] Open
Abstract
Streptococcus suis serotype 2 (SS2), an important zoonotic pathogen that causes septicemia, arthritis, and irreversible meningitis in pigs and humans, can be transmitted to humans from pigs. S. suis causes huge economic losses to the swine industry and poses a serious threat to public health. Previously, we found that the brain tissues of mice with SS2-induced meningitis showed disrupted structural integrity and significantly enhanced polymorphonuclear neutrophil (PMN) infiltration. We showed that the brain tissues of SS2-infected mice had increased ribosomal protein SA (RPSA)-positive PMN counts. However, the inflammatory responses of RPSA+ PMNs to SS2 and their effects on the blood-brain barrier (BBB) remain unclear. Therefore, in studying the pathogenesis of SS2-induced meningitis, it is essential that we explore the functions of RPSA+ PMNs and their effects on the BBB. Herein, using flow cytometry and immunofluorescence microscopy analyses, we found that RPSA expression enhances PMN-induced phagocytosis and PMN-induced formation of neutrophil extracellular traps (NETs), which facilitate further elimination of bacteria. PMN surface expression of RPSA also alleviates local inflammation and tissue injuries by inhibiting secretion of the pro-inflammatory cytokines, TNF-α and IL-6. Moreover, the single-cell BBB model showed that RPSA disrupts BBB integrity by downregulating expression of tight junction-associated membrane proteins on PMNs. Taken together, our data suggest that PMN-surface expression of RPSA is a double-edged sword. RPSA+ PMN owns a stronger ability of bacterial cleaning and weakens inflammatory cytokines release which are useful to anti-infection, but does hurt BBB. Partly, RPSA+ PMN may be extremely useful to control the infection as a therapeutic cellular population, following novel insights into the special PMN population.
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Affiliation(s)
- Qiang Sun
- The Laboratory Department of First Hospital, Jilin University, Changchun, China
| | - Na Li
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Li Jia
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Wenfei Guo
- The Laboratory Department of First Hospital, Jilin University, Changchun, China
| | - Hexiang Jiang
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Baijun Liu
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Chuntong Bao
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Mengmeng Liu
- The Laboratory Department of First Hospital, Jilin University, Changchun, China
| | - Jing Huang
- The Laboratory Department of First Hospital, Jilin University, Changchun, China
| | - Liancheng Lei
- College of Veterinary Medicine, Jilin University, Changchun, China.,College of Animal Sciences, Yangtze University, Jingzhou, China
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8
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Dong HJ, Zhang R, Kuang Y, Wang XJ. Selective regulation in ribosome biogenesis and protein production for efficient viral translation. Arch Microbiol 2020; 203:1021-1032. [PMID: 33124672 PMCID: PMC7594972 DOI: 10.1007/s00203-020-02094-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 09/18/2020] [Accepted: 10/13/2020] [Indexed: 11/25/2022]
Abstract
As intracellular parasites, viruses depend heavily on host cell structures and their functions to complete their life cycle and produce new viral particles. Viruses utilize or modulate cellular translational machinery to achieve efficient replication; the role of ribosome biogenesis and protein synthesis in viral replication particularly highlights the importance of the ribosome quantity and/or quality in controlling viral protein synthesis. Recently reported studies have demonstrated that ribosome biogenesis factors (RBFs) and ribosomal proteins (RPs) act as multifaceted regulators in selective translation of viral transcripts. Here we summarize the recent literature on RBFs and RPs and their association with subcellular redistribution, post-translational modification, enzyme catalysis, and direct interaction with viral proteins. The advances described in this literature establish a rationale for targeting ribosome production and function in the design of the next generation of antiviral agents.
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Affiliation(s)
- Hui-Jun Dong
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Rui Zhang
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
| | - Yu Kuang
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
| | - Xiao-Jia Wang
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
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Ishishita S, Tatsumoto S, Kinoshita K, Nunome M, Suzuki T, Go Y, Matsuda Y. Transcriptome analysis revealed misregulated gene expression in blastoderms of interspecific chicken and Japanese quail F1 hybrids. PLoS One 2020; 15:e0240183. [PMID: 33044996 PMCID: PMC7549780 DOI: 10.1371/journal.pone.0240183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 09/22/2020] [Indexed: 11/29/2022] Open
Abstract
Hybrid incompatibility, such as sterility and inviability, prevents gene flow between closely-related populations as a reproductive isolation barrier. F1 hybrids between chickens and Japanese quail (hereafter, referred to as quail), exhibit a high frequency of developmental arrest at the preprimitive streak stage. To investigate the molecular basis of the developmental arrest at the preprimitive streak stage in chicken–quail F1 hybrid embryos, we investigated chromosomal abnormalities in the hybrid embryos using molecular cytogenetic analysis. In addition, we quantified gene expression in parental species and chicken- and quail-derived allele-specific expression in the hybrids at the early blastoderm and preprimitive streak stages by mRNA sequencing. Subsequently, we compared the directions of change in gene expression, including upregulation, downregulation, or no change, from the early blastoderm stage to the preprimitive streak stage between parental species and their hybrids. Chromosome analysis revealed that the cells of the hybrid embryos contained a fifty-fifty mixture of parental chromosomes, and numerical chromosomal abnormalities were hardly observed in the hybrid cells. Gene expression analysis revealed that a part of the genes that were upregulated from the early blastoderm stage to the preprimitive streak stage in both parental species exhibited no upregulation of both chicken- and quail-derived alleles in the hybrids. GO term enrichment analysis revealed that these misregulated genes are involved in various biological processes, including ribosome-mediated protein synthesis and cell proliferation. Furthermore, the misregulated genes included genes involved in early embryonic development, such as primitive streak formation and gastrulation. These results suggest that numerical chromosomal abnormalities due to a segregation failure does not cause the lethality of chicken–quail hybrid embryos, and that the downregulated expression of the genes that are involved in various biological processes, including translation and primitive streak formation, mainly causes the developmental arrest at the preprimitive streak stage in the hybrids.
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Affiliation(s)
- Satoshi Ishishita
- Avian Bioscience Research Center, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, Japan
| | - Shoji Tatsumoto
- Cognitive Genomics Research Group, Exploratory Research Center on Life and Living Systems (ExCELLs), National Institutes of Natural Sciences, Okazaki, Aichi, Japan
| | - Keiji Kinoshita
- Avian Bioscience Research Center, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, Japan
| | - Mitsuo Nunome
- Avian Bioscience Research Center, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, Japan
| | - Takayuki Suzuki
- Avian Bioscience Research Center, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, Japan
- Laboratory of Avian Bioscience, Department of Animal Sciences, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, Japan
| | - Yasuhiro Go
- Cognitive Genomics Research Group, Exploratory Research Center on Life and Living Systems (ExCELLs), National Institutes of Natural Sciences, Okazaki, Aichi, Japan
| | - Yoichi Matsuda
- Avian Bioscience Research Center, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, Japan
- Laboratory of Avian Bioscience, Department of Animal Sciences, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, Japan
- * E-mail:
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10
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Lorusso G, Rüegg C, Kuonen F. Targeting the Extra-Cellular Matrix-Tumor Cell Crosstalk for Anti-Cancer Therapy: Emerging Alternatives to Integrin Inhibitors. Front Oncol 2020; 10:1231. [PMID: 32793493 PMCID: PMC7387567 DOI: 10.3389/fonc.2020.01231] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 06/16/2020] [Indexed: 12/11/2022] Open
Abstract
The extracellular matrix (ECM) is a complex network composed of a multitude of different macromolecules. ECM components typically provide a supportive structure to the tissue and engender positional information and crosstalk with neighboring cells in a dynamic reciprocal manner, thereby regulating tissue development and homeostasis. During tumor progression, tumor cells commonly modify and hijack the surrounding ECM to sustain anchorage-dependent growth and survival, guide migration, store pro-tumorigenic cell-derived molecules and present them to enhance receptor activation. Thereby, ECM potentially supports tumor progression at various steps from initiation, to local growth, invasion, and systemic dissemination and ECM-tumor cells interactions have long been considered promising targets for cancer therapy. Integrins represent key surface receptors for the tumor cell to sense and interact with the ECM. Yet, attempts to therapeutically impinge on these interactions using integrin inhibitors have failed to deliver anticipated results, and integrin inhibitors are still missing in the emerging arsenal of drugs for targeted therapies. This paradox situation should urge the field to reconsider the role of integrins in cancer and their targeting, but also to envisage alternative strategies. Here, we review the therapeutic targets implicated in tumor cell adhesion to the ECM, whose inhibitors are currently in clinical trials and may offer alternatives to integrin inhibition.
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Affiliation(s)
- Girieca Lorusso
- Experimental and Translational Oncology, Department of Oncology Microbiology and Immunology, Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland
| | - Curzio Rüegg
- Experimental and Translational Oncology, Department of Oncology Microbiology and Immunology, Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland
| | - François Kuonen
- Department of Dermatology and Venereology, Hôpital de Beaumont, Lausanne University Hospital Center, Lausanne, Switzerland
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Vania L, Morris G, Otgaar TC, Bignoux MJ, Bernert M, Burns J, Gabathuse A, Singh E, Ferreira E, Weiss SFT. Patented therapeutic approaches targeting LRP/LR for cancer treatment. Expert Opin Ther Pat 2019; 29:987-1009. [PMID: 31722579 DOI: 10.1080/13543776.2019.1693543] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Introduction: The ubiquitously expressed 37 kDa/67 kDa high-affinity laminin receptor (laminin receptor precursor/laminin receptor, LRP/LR) is a protein found to play several roles within cells. The receptor is located in the nucleus, cytosol and the cell surface. LRP/LR mediates cell proliferation, cell adhesion and cell differentiation. As a result, it is seen to enhance tumor angiogenesis as well as invasion and adhesion, key steps in the metastatic cascade of cancer. Recent findings have shown that LRP/LR is involved in the maintenance of cell viability through apoptotic evasion, allowing for tumor progression. Thus, several patented therapeutic approaches targeting the receptor for the prevention and treatment of cancer have emerged.Areas covered: The several roles that LRP/LR plays in cancer progression as well as an overview of the current therapeutic patented strategies targeting LRP/LR and cancer to date.Expert opinion: Small molecule inhibitors, monoclonal antibodies and small interfering RNAs might act used as powerful tools in preventing tumor angiogenesis and metastasis through the induction of apoptosis and telomere erosion in several cancers. This review offers an overview of the roles played by LRP/LR in cancer progression, while providing novel patented approaches targeting the receptor as potential therapeutic routes for the treatment of cancer as well as various other diseases.
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Affiliation(s)
- Leila Vania
- School of Molecular and Cell Biology, University of the Witwatersrand, Wits, Johannesburg, Republic of South Africa
| | - Gavin Morris
- School of Molecular and Cell Biology, University of the Witwatersrand, Wits, Johannesburg, Republic of South Africa
| | - Tyrone C Otgaar
- School of Molecular and Cell Biology, University of the Witwatersrand, Wits, Johannesburg, Republic of South Africa
| | - Monique J Bignoux
- School of Molecular and Cell Biology, University of the Witwatersrand, Wits, Johannesburg, Republic of South Africa
| | - Martin Bernert
- School of Molecular and Cell Biology, University of the Witwatersrand, Wits, Johannesburg, Republic of South Africa
| | - Jessica Burns
- School of Molecular and Cell Biology, University of the Witwatersrand, Wits, Johannesburg, Republic of South Africa
| | - Anne Gabathuse
- Wits Commercial Enterprise, The Commercial Development Hub, Johannesburg, Republic of South Africa
| | - Elvira Singh
- School of Public Health, University of the Witwatersrand, Johannesburg, Republic of South Africa
| | - Eloise Ferreira
- School of Molecular and Cell Biology, University of the Witwatersrand, Wits, Johannesburg, Republic of South Africa
| | - Stefan F T Weiss
- School of Molecular and Cell Biology, University of the Witwatersrand, Wits, Johannesburg, Republic of South Africa
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Li S. Regulation of Ribosomal Proteins on Viral Infection. Cells 2019; 8:E508. [PMID: 31137833 PMCID: PMC6562653 DOI: 10.3390/cells8050508] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 05/17/2019] [Accepted: 05/21/2019] [Indexed: 12/20/2022] Open
Abstract
Ribosomal proteins (RPs), in conjunction with rRNA, are major components of ribosomes involved in the cellular process of protein biosynthesis, known as "translation". The viruses, as the small infectious pathogens with limited genomes, must recruit a variety of host factors to survive and propagate, including RPs. At present, more and more information is available on the functional relationship between RPs and virus infection. This review focuses on advancements in my own understanding of critical roles of RPs in the life cycle of viruses. Various RPs interact with viral mRNA and proteins to participate in viral protein biosynthesis and regulate the replication and infection of virus in host cells. Most interactions are essential for viral translation and replication, which promote viral infection and accumulation, whereas the minority represents the defense signaling of host cells by activating immune pathway against virus. RPs provide a new platform for antiviral therapy development, however, at present, antiviral therapeutics with RPs involving in virus infection as targets is limited, and exploring antiviral strategy based on RPs will be the guides for further study.
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Affiliation(s)
- Shuo Li
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China.
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Romero-López C, Ríos-Marco P, Berzal-Herranz B, Berzal-Herranz A. The HCV genome domains 5BSL3.1 and 5BSL3.3 act as managers of translation. Sci Rep 2018; 8:16101. [PMID: 30382192 PMCID: PMC6208389 DOI: 10.1038/s41598-018-34422-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 10/12/2018] [Indexed: 02/08/2023] Open
Abstract
The RNA genome of the hepatitis C virus (HCV) encodes a single open reading frame (ORF) containing numerous functional elements. Among these, the cis-acting replication element (CRE) at the 3′ end of the viral ORF, has become of increasing interest given its dual role as a viral translation repressor and replication enhancer. Long-range RNA-RNA contacts mediated by the CRE build the structural scaffold required for its proper functioning. The recruitment of different cellular factors, many related to the functioning of the translation machinery, might aid in the CRE-exerted downregulation of viral translation. The present data show that the CRE promotes a defect in polysome production, and hinders the assembly of the 80S complex, likely through the direct, high affinity recruitment of the 40S ribosomal subunit. This interaction involves the highly conserved 5BSL3.1 and 5BSL3.3 domains of the CRE, and is strictly dependent on RNA-protein contacts, particularly with the ribosomal proteins RPSA and RPS29. These observations support a model in which the CRE-mediated inhibition of viral translation is a multifactorial process defined by the establishment of long-range RNA-RNA interactions between the 5′ and 3′ ends of the viral genome, the sequestration of the 40S subunit by the CRE, and the subsequent stalling of polysome elongation at the 3′ end of the ORF, all governed by the highly stable hairpin domains 5BSL3.1 and 5BSL3.3. The present data thus suggest a new managerial role in HCV translation for these 5BSL3.1 and 5BSL3.3 domains.
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Affiliation(s)
- Cristina Romero-López
- Instituto de Parasitología y Biomedicina López-Neyra, (IPBLN-CSIC), Av. del Conocimiento 17, 18016, Armilla, Granada, Spain.
| | - Pablo Ríos-Marco
- Instituto de Parasitología y Biomedicina López-Neyra, (IPBLN-CSIC), Av. del Conocimiento 17, 18016, Armilla, Granada, Spain
| | - Beatriz Berzal-Herranz
- Instituto de Parasitología y Biomedicina López-Neyra, (IPBLN-CSIC), Av. del Conocimiento 17, 18016, Armilla, Granada, Spain
| | - Alfredo Berzal-Herranz
- Instituto de Parasitología y Biomedicina López-Neyra, (IPBLN-CSIC), Av. del Conocimiento 17, 18016, Armilla, Granada, Spain.
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Influence of the RPL34 gene on the growth and metastasis of oral squamous cell carcinoma cells. Arch Oral Biol 2017; 83:40-46. [PMID: 28697409 DOI: 10.1016/j.archoralbio.2017.06.035] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 06/29/2017] [Accepted: 06/29/2017] [Indexed: 01/18/2023]
Abstract
BACKGROUND Oral squamous cell carcinoma (OSCC) accounts for almost 3% of all malignant tumors all over the world. This study aims to investigate the correlation of RPL34 with the cell growth and metastasis of oral squamous cell carcinoma (OSCC) as well as its clinical prognosis. METHOD Quantitative real-time polymerase chain reaction (qRT-PCR) and immunohistochemistry were conducted to determine the RPL34 expression in 85 OSCC tissues and 30 normal oral mucosa tissues. Besides, OSCC cell lines SCC-4 were divided into blank group, negative control (NC) group and RPL34-shRNA group. The qRT-PCR and western blot were performed to measure RPL34 expression, CCK-8 and flow cytometry to observe cell growth and apoptosis, and wound healing and transwell to detect cell migration and invasion. RESULTS The RPL34 gene expression was up-regulated in OSCC tissues and cells. The RPL34 expression was significantly correlated with differentiation degree, TNM stage and lymph node metastasis. Patients with positive RPL34 expression had a poorer prognosis. After inhibition of RPL34 expression, the proliferation of SCC-4 cells was slowed down at 24h, 48h, 72h and 96h respectively, and both the migration distance and the number of invasive cells were reduced, while there was an increase in the ratio of cells at G0/G1 stage and cell apoptosis. CONCLUSION The RPL34 gene was highly expressed in OSCC, while silencing RPL34 could block cell proliferation and metastasis, but promote cell apoptosis, suggesting the RPL34 gene to be a new promising clinical target for OSCC therapy.
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Phongphaew W, Kobayashi S, Sasaki M, Carr M, Hall WW, Orba Y, Sawa H. Valosin-containing protein (VCP/p97) plays a role in the replication of West Nile virus. Virus Res 2016; 228:114-123. [PMID: 27914931 PMCID: PMC7114552 DOI: 10.1016/j.virusres.2016.11.029] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 11/25/2016] [Accepted: 11/25/2016] [Indexed: 12/16/2022]
Abstract
Inhibition of VCP by chemical inhibitors decreased WNV infection in a dose-dependent manner. Knockdown of endogenous VCP level using siRNA suppressed WNV infection. Depletion of VCP levels suppressed WNV infection at the early stages of WNV replication cycle. Depletion of VCP levels lowered nascent WNV genomic RNA. VCP participates in early stages and viral genomic RNA replication.
Valosin-containing protein (VCP) is classified as a member of the type II AAA+ ATPase protein family. VCP functions in several cellular processes, including protein degradation, membrane fusion, vesicular trafficking and disassembly of stress granules. Moreover, VCP is considered to play a role in the replication of several viruses, albeit through different mechanisms. In the present study, we have investigated the role of VCP in West Nile virus (WNV) infection. Endogenous VCP expression was inhibited using either VCP inhibitors or by siRNA knockdown. It could be shown that the inhibition of endogenous VCP expression significantly inhibited WNV infection. The entry assay revealed that silencing of endogenous VCP caused a significant reduction in the expression levels of WNV-RNA compared to control siRNA-treated cells. This indicates that VCP may play a role in early steps either the binding or entry steps of the WNV life cycle. Using WNV virus like particles and WNV-DNA-based replicon, it could be demonstrated that perturbation of VCP expression decreased levels of newly synthesized WNV genomic RNA. These findings suggest that VCP is involved in early steps and during genome replication of the WNV life cycle.
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Affiliation(s)
- Wallaya Phongphaew
- Division of Molecular Pathobiology, Research Center for Zoonosis Control, Hokkaido University, N20, W10, Kita-ku, Sapporo 001-0020, Japan
| | - Shintaro Kobayashi
- Division of Molecular Pathobiology, Research Center for Zoonosis Control, Hokkaido University, N20, W10, Kita-ku, Sapporo 001-0020, Japan; Laboratory of Public Health, Graduate School of Veterinary Medicine, Hokkaido University, N18, W9, Kita-ku, Sapporo 001-0020, Japan
| | - Michihito Sasaki
- Division of Molecular Pathobiology, Research Center for Zoonosis Control, Hokkaido University, N20, W10, Kita-ku, Sapporo 001-0020, Japan
| | - Michael Carr
- Global Institution for Collaborative Researches and Education (GI-CoRE), Global Station for Zoonosis Control, Hokkaido University, N20, W10, Kita-ku, Sapporo 001-0020, Japan; National Virus Reference Laboratory, University College Dublin, Belfield, Dublin 4, Ireland
| | - William W Hall
- Global Institution for Collaborative Researches and Education (GI-CoRE), Global Station for Zoonosis Control, Hokkaido University, N20, W10, Kita-ku, Sapporo 001-0020, Japan; Center for Research in Infectious Diseases, University College of Dublin, Belfield, Dublin 4, Dublin, Ireland; Global Virus Network (GVN), The Institute of Human Virology, University of Maryland, 22S. Greene Street, Baltimore, MD 21201, USA
| | - Yasuko Orba
- Division of Molecular Pathobiology, Research Center for Zoonosis Control, Hokkaido University, N20, W10, Kita-ku, Sapporo 001-0020, Japan
| | - Hirofumi Sawa
- Division of Molecular Pathobiology, Research Center for Zoonosis Control, Hokkaido University, N20, W10, Kita-ku, Sapporo 001-0020, Japan; Global Institution for Collaborative Researches and Education (GI-CoRE), Global Station for Zoonosis Control, Hokkaido University, N20, W10, Kita-ku, Sapporo 001-0020, Japan; Global Virus Network (GVN), The Institute of Human Virology, University of Maryland, 22S. Greene Street, Baltimore, MD 21201, USA.
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Alqahtani F, Mahdavi J, Wheldon LM, Vassey M, Pirinccioglu N, Royer PJ, Qarani SM, Morroll S, Stoof J, Holliday ND, Teo SY, Oldfield NJ, Wooldridge KG, Ala'Aldeen DAA. Deciphering the complex three-way interaction between the non-integrin laminin receptor, galectin-3 and Neisseria meningitidis. Open Biol 2015; 4:rsob.140053. [PMID: 25274119 PMCID: PMC4221890 DOI: 10.1098/rsob.140053] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The non-integrin laminin receptor (LAMR1/RPSA) and galectin-3 (Gal-3) are multi-functional host molecules with roles in diverse pathological processes, particularly of infectious or oncogenic origins. Using bimolecular fluorescence complementation and confocal imaging, we demonstrate that the two proteins homo- and heterodimerize, and that each isotype forms a distinct cell surface population. We present evidence that the 37 kDa form of LAMR1 (37LRP) is the precursor of the previously described 67 kDa laminin receptor (67LR), whereas the heterodimer represents an entity that is distinct from this molecule. Site-directed mutagenesis confirmed that the single cysteine (C(173)) of Gal-3 or lysine (K(166)) of LAMR1 are critical for heterodimerization. Recombinant Gal-3, expressed in normally Gal-3-deficient N2a cells, dimerized with endogenous LAMR1 and led to a significantly increased number of internalized bacteria (Neisseria meningitidis), confirming the role of Gal-3 in bacterial invasion. Contact-dependent cross-linking determined that, in common with LAMR1, Gal-3 binds the meningococcal secretin PilQ, in addition to the major pilin PilE. This study adds significant new mechanistic insights into the bacterial-host cell interaction by clarifying the nature, role and bacterial ligands of LAMR1 and Gal-3 isotypes during colonization.
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Affiliation(s)
- Fulwah Alqahtani
- School of Life Sciences, Centre for Biomolecular Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Jafar Mahdavi
- School of Life Sciences, Centre for Biomolecular Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Lee M Wheldon
- School of Life Sciences, Centre for Biomolecular Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Matthew Vassey
- School of Life Sciences, Centre for Biomolecular Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | | | - Pierre-Joseph Royer
- School of Life Sciences, Centre for Biomolecular Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Suzan M Qarani
- School of Life Sciences, Centre for Biomolecular Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Shaun Morroll
- School of Life Sciences, Centre for Biomolecular Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Jeroen Stoof
- School of Life Sciences, Centre for Biomolecular Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Nicholas D Holliday
- School of Life Sciences, Centre for Biomolecular Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Siew Y Teo
- School of Life Sciences, Centre for Biomolecular Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Neil J Oldfield
- School of Life Sciences, Centre for Biomolecular Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Karl G Wooldridge
- School of Life Sciences, Centre for Biomolecular Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Dlawer A A Ala'Aldeen
- School of Life Sciences, Centre for Biomolecular Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, UK
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DiGiacomo V, Meruelo D. Looking into laminin receptor: critical discussion regarding the non-integrin 37/67-kDa laminin receptor/RPSA protein. Biol Rev Camb Philos Soc 2015; 91:288-310. [PMID: 25630983 DOI: 10.1111/brv.12170] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Revised: 12/04/2014] [Accepted: 12/08/2014] [Indexed: 02/06/2023]
Abstract
The 37/67-kDa laminin receptor (LAMR/RPSA) was originally identified as a 67-kDa binding protein for laminin, an extracellular matrix glycoprotein that provides cellular adhesion to the basement membrane. LAMR has evolutionary origins, however, as a 37-kDa RPS2 family ribosomal component. Expressed in all domains of life, RPS2 proteins have been shown to have remarkably diverse physiological roles that vary across species. Contributing to laminin binding, ribosome biogenesis, cytoskeletal organization, and nuclear functions, this protein governs critical cellular processes including growth, survival, migration, protein synthesis, development, and differentiation. Unsurprisingly given its purview, LAMR has been associated with metastatic cancer, neurodegenerative disease and developmental abnormalities. Functioning in a receptor capacity, this protein also confers susceptibility to bacterial and viral infection. LAMR is clearly a molecule of consequence in human disease, directly mediating pathological events that make it a prime target for therapeutic interventions. Despite decades of research, there are still a large number of open questions regarding the cellular biology of LAMR, the nature of its ability to bind laminin, the function of its intrinsically disordered C-terminal region and its conversion from 37 to 67 kDa. This review attempts to convey an in-depth description of the complexity surrounding this multifaceted protein across functional, structural and pathological aspects.
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Affiliation(s)
- Vincent DiGiacomo
- Department of Pathology, New York University School of Medicine, 180 Varick Street, New York, NY 10014, U.S.A
| | - Daniel Meruelo
- Department of Pathology, New York University School of Medicine, 180 Varick Street, New York, NY 10014, U.S.A.,NYU Cancer Institute, 550 First Avenue, New York, NY 10016, U.S.A.,NYU Gene Therapy Center, 550 First Avenue, New York, NY 10016, U.S.A
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18
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Lisova O, Belkadi L, Bedouelle H. Direct and indirect interactions in the recognition between a cross-neutralizing antibody and the four serotypes of dengue virus. J Mol Recognit 2014; 27:205-14. [PMID: 24591178 DOI: 10.1002/jmr.2352] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Revised: 12/16/2013] [Accepted: 12/16/2013] [Indexed: 11/11/2022]
Abstract
Dengue fever is the most important vector-borne viral disease. Four serotypes of dengue virus, DENV1 to DENV4, coexist. Secondary infection by a different serotype is a risk factor for severe dengue. Monoclonal antibody mAb4E11 neutralizes the four serotypes of DENV with varying efficacies by recognizing an epitope located within domain-III (ED3) of the viral envelope (E) protein. To better understand the cross-reactivities between mAb4E11 and the four serotypes of DENV, we constructed mutations in both Fab4E11 fragment and ED3, and we searched for indirect interactions in the crystal structures of the four complexes. According to the serotype, 7 to 12 interactions are mediated by one water molecule, 1 to 10 by two water molecules, and several of these interactions are conserved between serotypes. Most interfacial water molecules make hydrogen bonds with both antibody and antigen. Some residues or atomic groups are engaged in both direct and water-mediated interactions. The doubly-indirect interactions are more numerous in the complex of lowest affinity. The third complementarity determining region of the light chain (L-CDR3) of mAb4E11 does not contact ED3. The structures and double-mutant thermodynamic cycles showed that the effects of (hyper)-mutations in L-CDR3 on affinity were caused by conformational changes and indirect interactions with ED3 through other CDRs. Exchanges of residues between ED3 serotypes showed that their effects on affinity were context dependent. Thus, conformational changes, structural context, and indirect interactions should be included when studying cross-reactivity between antibodies and different serotypes of viral antigens for a better design of diagnostics, vaccine, and therapeutic tools against DENV and other Flaviviruses.
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Affiliation(s)
- Olesia Lisova
- Institut Pasteur, Unit of Molecular Prevention and Therapy of Human Diseases, Department of Infection and Epidemiology, rue du Dr. Roux, F-75015, Paris, France; CNRS, URA3012, rue du Dr. Roux, F-75015, Paris, France
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Characterization of the interaction between lysyl-tRNA synthetase and laminin receptor by NMR. FEBS Lett 2014; 588:2851-8. [DOI: 10.1016/j.febslet.2014.06.048] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Revised: 05/30/2014] [Accepted: 06/11/2014] [Indexed: 12/11/2022]
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20
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Baharuddin A, Amir Hassan A, Othman R, Xu Y, Huang M, Ario Tejo B, Yusof R, Abdul Rahman N, Othman S. Dengue Envelope Domain III-Peptide Binding Analysis via Tryptophan Fluorescence Quenching Assay. Chem Pharm Bull (Tokyo) 2014; 62:947-55. [DOI: 10.1248/cpb.c14-00165] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Aida Baharuddin
- Drug Design and Development Research Group, University of Malaya
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya
| | - Asfarina Amir Hassan
- Drug Design and Development Research Group, University of Malaya
- Department of Pharmacy, Faculty of Medicine, University of Malaya
| | - Rozana Othman
- Drug Design and Development Research Group, University of Malaya
- Department of Pharmacy, Faculty of Medicine, University of Malaya
- Centre for Natural Product and Drug Discovery, University of Malaya
| | - Yongtao Xu
- School of Chemistry and Chemical Engineering, Queen’s University Belfast
| | - Meilan Huang
- School of Chemistry and Chemical Engineering, Queen’s University Belfast
| | - Bimo Ario Tejo
- Center for Infectious Diseases Research, Surya University
| | - Rohana Yusof
- Drug Design and Development Research Group, University of Malaya
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya
| | | | - Shatrah Othman
- Drug Design and Development Research Group, University of Malaya
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya
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Zidane N, Dussart P, Bremand L, Bedouelle H. Cross-reactivities between human IgMs and the four serotypes of dengue virus as probed with artificial homodimers of domain-III from the envelope proteins. BMC Infect Dis 2013; 13:302. [PMID: 23815496 PMCID: PMC3701519 DOI: 10.1186/1471-2334-13-302] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Accepted: 06/26/2013] [Indexed: 12/23/2022] Open
Abstract
Background Dengue fever is the most important vector-borne viral disease. Four serotypes of dengue virus, DENV1 to DENV4, coexist. Infection by one serotype elicits long-lasting immunity to that serotype but not the other three. Subsequent infection by a different serotype is a risk factor for severe dengue. Domain III (ED3) of the viral envelope protein interacts with cell receptors and contains epitopes recognized by neutralizing antibodies. We determined the serotype specificity and cross-reactivity of human IgMs directed against ED3 by using a well-characterized collection of 90 DENV-infected and 89 DENV-uninfected human serums. Methods The recognitions between the four serotypes of ED3 and the serums were assayed with an IgM antibody-capture ELISA (MAC-ELISA) and artificial homodimeric antigens. The results were analyzed with Receiving Operator Characteristic (ROC) curves. Results The DENV-infected serums contained IgMs that reacted with one or several ED3 serotypes. The discrimination by ED3 between serums infected by the homotypic DENV and uninfected serums varied with the serotype in the decreasing order DENV1 > DENV2 > DENV3 > DENV4. The ED3 domain of DENV1 gave the highest discrimination between DENV-infected and DENV-uninfected serums, whatever the infecting serotype, and thus behaved like a universal ED3 domain for the detection of IgMs against DENV. Some ED3 serotypes discriminated between IgMs directed against the homotypic and heterotypic DENVs. The patterns of cross-reactivities and discriminations varied with the serotype. Conclusions The results should help better understand the IgM immune response and protection against DENV since ED3 is widely used as an antigen in diagnostic assays and an immunogen in vaccine candidates.
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Affiliation(s)
- Nora Zidane
- Unit of Molecular Prevention and Therapy of Human Diseases, Department of Infection and Epidemiology, Institut Pasteur, Rue du Docteur Roux, F-75015 Paris, France
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