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Research Article Open access CC BY 4.0

Descriptive Analysis of Ebola virus Proteins: Towards Development of Effective Therapeutics and Vaccines

Samuel Munalula Munjita, Geoffrey Kwenda

Microbiology Research Journal International · pp. 457–479 · Published 4 May 2015

10.9734/BMRJ/2015/16297

Abstract

Ebola virus (EBOV) is a non-segmented enveloped RNA virus. It has seven structural proteins and three non-structural proteins (∆-peptide, ssGP and sGP). Structural proteins include viral proteins (VP24, VP30, VP35, and VP40), glycoprotein(GP), nucleoprotein(NP) and RNA polymerase L. The functions of structural proteins range from replication, transcription and maintenance of the structural stability of EBOV. VP24 and VP35 are well known for suppressing host interferon (IFN) response systems. There are no approved treatments for Ebola virus disease (EVD). However, several virus vectored vaccines aimed at inducing B and T cell immunity against GP and NP are currently under development or undergoing clinical trials. Unlike virus vectored vaccines, virus like particle (VLP) based vaccines have been developed to elicit immunity against GP, NP, and VP40. They can also be engineered to include VP24 and VP35. Several compounds such as small interfering RNAs (siRNAs), phosphorodiamidate morpholino oligomers (PMOs), c3-NpcA, peptides, NSC629, E64, compound 3.47, compound 7, CA074, and Ca-c3 Ado that target different stages of the EBOV replication cycle have been found to be effective. Other compounds such as recombinant nematode anticoagulant protein c2 (rNAPc2) and Recombinant human activated protein C (rhAPC) have been designed to reduce coagulopathies seen in late stages of EVD. Cocktails of neutralising monoclonal antibodies are also effective against EBOV alone or in combination with IFNs. Therefore, this review discusses the structure and mechanism of action of EBOV proteins, current promising therapeutics and vaccines against EBOV, and different ways of improving their efficacy.

Non-structural proteins VP40 VP35 VP24 VP30 GP L protein therapeutics vaccines

References (163)

  1. 1 Structure of the haemagglutinin membrane glycoprotein of influenza virus at 3 Å resolution [DOI]
  2. 2 HIV-1 and Ebola virus encode small peptide motifs that recruit Tsg101 to sites of particle assembly to facilitate egress [DOI]
  3. 3 Successful treatment of advanced Ebola virus infection with T-705 (favipiravir) in a small animal model [DOI]
  4. 4 A PPxY motif within the VP40 protein of Ebola virus interacts physically and functionally with a ubiquitin ligase: Implications for filovirus budding [DOI]
  5. 5 Identification of the Ebola virus glycoprotein as the main viral determinant of vascular cell cytotoxicity and injury [DOI]
  6. 6 Structural basis of West Nile virus neutralization by a therapeutic antibody [DOI]
  7. 7 The Ebola Virus VP35 Protein Is a Suppressor of RNA Silencing [DOI]
  8. 8 Ebola Zaire Virus Blocks Type I Interferon Production by Exploiting the Host SUMO Modification Machinery [DOI]
  9. 9 Direct Type I IFN but Not MDA5/TLR3 Activation of Dendritic Cells Is Required for Maturation and Metabolic Shift to Glycolysis after Poly IC Stimulation [DOI]
  10. 10 Advanced antisense therapies for postexposure protection against lethal filovirus infections [DOI]
  11. 11 Vesicular stomatitis virus-based vaccines protect nonhuman primates against aerosol challenge with Ebola and Marburg viruses [DOI]
  12. 12 Ebola Virus Antibodies in Fruit Bats, Ghana, West Africa [DOI]
  13. 13 Recombinant Human Activated Protein C for the Postexposure Treatment of Ebola Hemorrhagic Fever [DOI]
  14. 14 Ebola Virus VP35 Antagonizes PKR Activity through Its C-Terminal Interferon Inhibitory Domain [DOI]
  15. 15 Ebola virus uses clathrin-mediated endocytosis as an entry pathway [DOI]
  16. 16 Phosphorylation of VP30 Impairs Ebola Virus Transcription [DOI]
  17. 17 Structural basis for Marburg virus VP35–mediated immune evasion mechanisms [DOI]
  18. 18 Molecular Characterization of the Monoclonal Antibodies Composing ZMAb: A Protective Cocktail Against Ebola Virus [DOI]
  19. 19 Viral RNA silencing suppressors (RSS): Novel strategy of viruses to ablate the host RNA interference (RNAi) defense system [DOI]
  20. 20 Chimeric human parainfluenza virus bearing the Ebola virus glycoprotein as the sole surface protein is immunogenic and highly protective against Ebola virus challenge [DOI]
  21. 21 Membrane binding and bending in Ebola VP40 assembly and egress [DOI]
  22. 22 Association of the Caveola Vesicular System with Cellular Entry by Filoviruses [DOI]
  23. 23 A C-terminal basic amino acid motif of Zaire ebolavirus VP35 is essential for type I interferon antagonism and displays high identity with the RNA-binding domain of another interferon antagonist, the NS1 protein of influenza A virus [DOI]
  24. 24 Chimpanzee adenovirus vaccine protects against Zaire Ebola virus [DOI]
  25. 25 The immune gene repertoire of an important viral reservoir, the Australian black flying fox [DOI]
  26. 26 Endoproteolytic Processing of the Ebola Virus Envelope Glycoprotein: Cleavage Is Not Required for Function [DOI]
  27. 27 Generation of Marburg virus-like particles by co-expression of glycoprotein and matrix protein [DOI]
  28. 28 Release of Viral Glycoproteins during Ebola Virus Infection [DOI]
  29. 29 Ebola and Marburg virus-like particles activate human myeloid dendritic cells [DOI]
  30. 30 Delta-Peptide Is the Carboxy-Terminal Cleavage Fragment of the Nonstructural Small Glycoprotein sGP of Ebola Virus [DOI]
  31. 31 Phosphorylation of Ebola Virus VP30 Influences the Composition of the Viral Nucleocapsid Complex [DOI]
  32. 32 Ebola virus-like particles produced in insect cells exhibit dendritic cell stimulating activity and induce neutralizing antibodies [DOI]
  33. 33 Ebola Virus Matrix Protein VP40 Uses the COPII Transport System for Its Intracellular Transport [DOI]
  34. 34 A Single Intranasal Inoculation with a Paramyxovirus-Vectored Vaccine Protects Guinea Pigs against a Lethal-Dose Ebola Virus Challenge [DOI]
  35. 35 Crystal structure of the C-terminal domain of Ebola virus VP30 reveals a role in transcription and nucleocapsid association [DOI]
  36. 36 The Ebola Virus Matrix Protein Penetrates into the Plasma Membrane [DOI]
  37. 37 Oligomerization of Ebola Virus VP30 Is Essential for Viral Transcription and Can Be Inhibited by a Synthetic Peptide [DOI]
  38. 38 Structural and Functional Characterization of Reston Ebola Virus VP35 Interferon Inhibitory Domain [DOI]
  39. 39 The Ebola Virus Matrix Protein Deeply Penetrates the Plasma Membrane: An Important Step in Viral Egress [DOI]
  40. 40 Molecular characterisation of Toll-like receptors in the black flying fox Pteropus alecto [DOI]
  41. 41 Proteolytic Processing of the Ebola Virus Glycoprotein Is Not Critical for Ebola Virus Replication in Nonhuman Primates [DOI]
  42. 42 Ebolavirus VP35 Coats the Backbone of Double-Stranded RNA for Interferon Antagonism [DOI]
  43. 43 Requirements for cell rounding and surface protein down-regulation by Ebola virus glycoprotein [DOI]
  44. 44 Monoclonal Antibodies Combined with Adenovirus-Vectored Interferon Significantly Extend the Treatment Window in Ebola Virus-Infected Guinea Pigs [DOI]
  45. 45 Cloning, expression and antiviral activity of IFNγ from the Australian fruit bat, Pteropus alecto [DOI]
  46. 46 Classification, Structure, and Replication of Filoviruses [DOI]
  47. 47 Identification of two amino acid residues on Ebola virus glycoprotein 1 critical for cell entry [DOI]
  48. 48 Evidence against Ebola Virus sGP Binding to Human Neutrophils by a Specific Receptor [DOI]
  49. 49 The nucleoprotein gene of ebola virus: Cloning, sequencing, and in vitro expression [DOI]
  50. 50 The OrderMononegavirales [DOI]
  51. 51 Reversion of advanced Ebola virus disease in nonhuman primates with ZMapp [DOI]
  52. 52 Endosomal Proteolysis of the Ebola Virus Glycoprotein Is Necessary for Infection [DOI]
  53. 53 Live attenuated recombinant vaccine protects nonhuman primates against Ebola and Marburg viruses [DOI]
  54. 54 Small molecule inhibitors reveal Niemann–Pick C1 is essential for Ebola virus infection [DOI]
  55. 55 Comparative Analysis of Bat Genomes Provides Insight into the Evolution of Flight and Immunity [DOI]
  56. 56 Processing of the Ebola virus glycoprotein by the proprotein convertase furin [DOI]
  57. 57 The Ebola Virus VP35 Protein Inhibits Activation of Interferon Regulatory Factor 3 [DOI]
  58. 58 Proposal for a revised taxonomy of the family Filoviridae: classification, names of taxa and viruses, and virus abbreviations [DOI]
  59. 59 Accelerated vaccination for Ebola virus haemorrhagic fever in non-human primates [DOI]
  60. 60 Ebola Virus VP40-Induced Particle Formation and Association with the Lipid Bilayer [DOI]
  61. 61 Marburg Virus Vaccines Based upon Alphavirus Replicons Protect Guinea Pigs and Nonhuman Primates [DOI]
  62. 62 Distinct Cellular Interactions of Secreted and Transmembrane Ebola Virus Glycoproteins [DOI]
  63. 63 Ebola Virus VP24 Proteins Inhibit the Interaction of NPI-1 Subfamily Karyopherin α Proteins with Activated STAT1 [DOI]
  64. 64 The Assembly of Ebola Virus Nucleocapsid Requires Virion-Associated Proteins 35 and 24 and Posttranslational Modification of Nucleoprotein [DOI]
  65. 65 Ebola Virus Protein VP35 Impairs the Function of Interferon Regulatory Factor-Activating Kinases IKKε and TBK-1 [DOI]
  66. 66 Post-exposure efficacy of Oral T-705 (Favipiravir) against inhalational Ebola virus infection in a mouse model [DOI]
  67. 67 Structural basis for dsRNA recognition and interferon antagonism by Ebola VP35 [DOI]
  68. 68 Ebola Virus Glycoproteins Induce Global Surface Protein Down-Modulation and Loss of Cell Adherence [DOI]
  69. 69 Vesicular Stomatitis Virus-Based Ebola Vaccine Is Well-Tolerated and Protects Immunocompromised Nonhuman Primates [DOI]
  70. 70 Mutual Antagonism between the Ebola Virus VP35 Protein and the RIG-I Activator PACT Determines Infection Outcome [DOI]
  71. 71 Nasal Delivery of an Adenovirus-Based Vaccine Bypasses Pre-Existing Immunity to the Vaccine Carrier and Improves the Immune Response in Mice [DOI]
  72. 72 The VP35 Protein of Ebola Virus Inhibits the Antiviral Effect Mediated by Double-Stranded RNA-Dependent Protein Kinase PKR [DOI]
  73. 73 Multiple Cationic Amphiphiles Induce a Niemann-Pick C Phenotype and Inhibit Ebola Virus Entry and Infection [DOI]
  74. 74 The Ebola Virus Interferon Antagonist VP24 Directly Binds STAT1 and Has a Novel, Pyramidal Fold [DOI]
  75. 75 Mucosal Immunization of Cynomolgus Macaques with the VSVΔG/ZEBOVGP Vaccine Stimulates Strong Ebola GP-Specific Immune Responses [DOI]
  76. 76 Characterization of Zaire ebolavirus glycoprotein-specific monoclonal antibodies [DOI]
  77. 77 Virus nomenclature below the species level: a standardized nomenclature for natural variants of viruses assigned to the family Filoviridae [DOI]
  78. 78 Sustained protection against Ebola virus infection following treatment of infected nonhuman primates with ZMAb [DOI]
  79. 79 Ebola GP-Specific Monoclonal Antibodies Protect Mice and Guinea Pigs from Lethal Ebola Virus Infection [DOI]
  80. 80 Identification of an antioxidant small-molecule with broad-spectrum antiviral activity [DOI]
  81. 81 Emerging Role of the Host Restriction Factor Tetherin in Viral Immune Sensing [DOI]
  82. 82 Identification of Continuous Human B-Cell Epitopes in the VP35, VP40, Nucleoprotein and Glycoprotein of Ebola Virus [DOI]
  83. 83 Reverse Genetics Demonstrates that Proteolytic Processing of the Ebola Virus Glycoprotein Is Not Essential for Replication in Cell Culture [DOI]
  84. 84 Treatment of lethal Ebola virus infection in mice with a single dose of an S-adenosyl-l-homocysteine hydrolase inhibitor [DOI]
  85. 85 Structural characterization and membrane binding properties of the matrix protein VP40 of ebola virus [DOI]
  86. 86 Pathogenesis of Experimental Ebola Zaire Virus Infection in BALB/c Mice [DOI]
  87. 87 Biochemical and Functional Characterization of the Ebola Virus VP24 Protein: Implications for a Role in Virus Assembly and Budding [DOI]
  88. 88 The Nonstructural Small Glycoprotein sGP of Ebola Virus Is Secreted as an Antiparallel-Orientated Homodimer [DOI]
  89. 89 Interferon Production and Signaling Pathways Are Antagonized during Henipavirus Infection of Fruit Bat Cell Lines [DOI]
  90. 90 Association of Ebola Virus Matrix Protein VP40 with Microtubules [DOI]
  91. 91 Inhibition of Ebola Virus Entry by a C-peptide Targeted to Endosomes [DOI]
  92. 92 A Single Sublingual Dose of an Adenovirus-Based Vaccine Protects against Lethal Ebola Challenge in Mice and Guinea Pigs [DOI]
  93. 93 Single-Particle Tracking Demonstrates that Actin Coordinates the Movement of the Ebola Virus Matrix Protein [DOI]
  94. 94 Bat Mx1 and Oas1, but not Pkr are highly induced by bat interferon and viral infection [DOI]
  95. 95 A Loop Region in the N-Terminal Domain of Ebola Virus VP40 Is Important in Viral Assembly, Budding, and Egress [DOI]
  96. 96 Analysis of Ebola virus and VLP release using an immunocapture assay [DOI]
  97. 97 Mucosal parainfluenza virus-vectored vaccine against Ebola virus replicates in the respiratory tract of vector-immune monkeys and is immunogenic [DOI]
  98. 98 Full-length Ebola glycoprotein accumulates in the endoplasmic reticulum [DOI]
  99. 99 Crystallization and preliminary X-ray analysis of the matrix protein from Ebola virus [DOI]
  100. 100 GP mRNA of Ebola Virus Is Edited by the Ebola Virus Polymerase and by T7 and Vaccinia Virus Polymerases1 [DOI]
  101. 101 Natural adjuvants: Endogenous activators of dendritic cells [DOI]
  102. 102 Structure of the Ebola virus glycoprotein bound to an antibody from a human survivor [DOI]
  103. 103 Pathogenesis of Ebola Hemorrhagic Fever in Cynomolgus Macaques [DOI]
  104. 104 Human Ebola Outbreak Resulting from Direct Exposure to Fruit Bats in Luebo, Democratic Republic of Congo, 2007 [DOI]
  105. 105 Ebola Virus VP24 Binds Karyopherin α1 and Blocks STAT1 Nuclear Accumulation [DOI]
  106. 106 Postexposure protection of non-human primates against a lethal Ebola virus challenge with RNA interference: a proof-of-concept study [DOI]
  107. 107 Investigating the zoonotic origin of the West African Ebola epidemic [DOI]
  108. 108 Role of Endosomal Cathepsins in Entry Mediated by the Ebola Virus Glycoprotein [DOI]
  109. 109 Treatment of Ebola virus infection with a recombinant inhibitor of factor VIIa/tissue factor: a study in rhesus monkeys [DOI]
  110. 110 Delayed treatment of Ebola virus infection with plant-derived monoclonal antibodies provides protection in rhesus macaques [DOI]
  111. 111 Cutting Edge: Impairment of Dendritic Cells and Adaptive Immunity by Ebola and Lassa Viruses [DOI]
  112. 112 Ebola Virus VP40 Drives the Formation of Virus-Like Filamentous Particles Along with GP [DOI]
  113. 113 Successful Treatment of Ebola Virus–Infected Cynomolgus Macaques with Monoclonal Antibodies [DOI]
  114. 114 Ebola virus-like particles protect from lethal Ebola virus infection [DOI]
  115. 115 Structural Rearrangement of Ebola Virus VP40 Begets Multiple Functions in the Virus Life Cycle [DOI]
  116. 116 Therapeutic Intervention of Ebola Virus Infection in Rhesus Macaques with the MB-003 Monoclonal Antibody Cocktail [DOI]
  117. 117 Antibody-Dependent Enhancement of Ebola Virus Infection [DOI]
  118. 118 Effects of Ebola Virus Glycoproteins on Endothelial Cell Activation and Barrier Function [DOI]
  119. 119 Functional Mapping of the Nucleoprotein of Ebola Virus [DOI]
  120. 120 Structure of the Ebola VP35 interferon inhibitory domain [DOI]
  121. 121 Recombinant Vesicular Stomatitis Virus Vector Mediates Postexposure Protection against Sudan Ebola Hemorrhagic Fever in Nonhuman Primates [DOI]
  122. 122 Ebolavirus Proteins Suppress the Effects of Small Interfering RNA by Direct Interaction with the Mammalian RNA Interference Pathway [DOI]
  123. 123 Protective Efficacy of Neutralizing Monoclonal Antibodies in a Nonhuman Primate Model of Ebola Hemorrhagic Fever [DOI]
  124. 124 Ebolavirus VP35 uses a bimodal strategy to bind dsRNA for innate immune suppression [DOI]
  125. 125 mAbs and Ad-Vectored IFN-α Therapy Rescue Ebola-Infected Nonhuman Primates When Administered After the Detection of Viremia and Symptoms [DOI]
  126. 126 Enhanced Protection against Ebola Virus Mediated by an Improved Adenovirus-Based Vaccine [DOI]
  127. 127 Filovirus RefSeq Entries: Evaluation and Selection of Filovirus Type Variants, Type Sequences, and Names [DOI]
  128. 128 Crystal structure of the matrix protein VP40 from Ebola virus [DOI]
  129. 129 The Matrix Protein VP40 from Ebola Virus Octamerizes into Pore-like Structures with Specific RNA Binding Properties [DOI]
  130. 130 Mutational Analysis of the Putative Fusion Domain of Ebola Virus Glycoprotein [DOI]
  131. 131 Assessment of a Vesicular Stomatitis Virus–Based Vaccine by Use of the Mouse Model of Ebola Virus Hemorrhagic Fever [DOI]
  132. 132 VP40 Octamers Are Essential for Ebola Virus Replication [DOI]
  133. 133 Ebola Virus (EBOV) VP24 Inhibits Transcription and Replication of the EBOV Genome [DOI]
  134. 134 FolateReceptor Alpha and Caveolae Are Not Required for Ebola VirusGlycoprotein-Mediated ViralInfection [DOI]
  135. 135 Whole-Genome Expression Profiling Reveals That Inhibition of Host Innate Immune Response Pathways by Ebola Virus Can Be Reversed by a Single Amino Acid Change in the VP35 Protein [DOI]
  136. 136 Recombinant Human Monoclonal Antibodies to Ebola Virus [DOI]
  137. 137 Analysis of Filovirus Entry into Vero E6 Cells, Using Inhibitors of Endocytosis, Endosomal Acidification, Structural Integrity, and Cathepsin (B and L) Activity [DOI]
  138. 138 Effect of Ebola virus proteins GP, NP and VP35 on VP40 VLP morphology [DOI]
  139. 139 Host IQGAP1 and Ebola Virus VP40 Interactions Facilitate Virus-Like Particle Egress [DOI]
  140. 140 Ebola virus glycoprotein GP is not cytotoxic when expressed constitutively at a moderate level [DOI]
  141. 141 Ebola Virus VP30 Is an RNA Binding Protein [DOI]
  142. 142 The VP35 protein of Ebola virus impairs dendritic cell maturation induced by virus and lipopolysaccharide [DOI]
  143. 143 Comparative Analysis of Ebola Virus Glycoprotein Interactions With Human and Bat Cells [DOI]
  144. 144 Structure‐Function Analysis of the Soluble Glycoprotein, sGP, of Ebola Virus [DOI]
  145. 145 Role of VP30 Phosphorylation in the Ebola Virus Replication Cycle [DOI]
  146. 146 Protective Efficacy of a Bivalent Recombinant Vesicular Stomatitis Virus Vaccine in the Syrian Hamster Model of Lethal Ebola Virus Infection [DOI]
  147. 147 The Cys 3 -His 1 Motif of the Respiratory Syncytial Virus M2-1 Protein Is Essential for Protein Function [DOI]
  148. 148 Structural Phosphoprotein M2-1 of the Human Respiratory Syncytial Virus Is an RNA Binding Protein [DOI]
  149. 149 TLR-4 engagement of dendritic cells confers a BST-2/tetherin-mediated restriction of HIV-1 infection to CD4+T cells across the virological synapse [DOI]
  150. 150 Ebola Virus, Neutrophils, and Antibody Specificity [DOI]
  151. 151 Development of a preventive vaccine for Ebola virus infection in primates [DOI]
  152. 152 Type I Interferon as a Powerful Adjuvant for Monocyte-Derived Dendritic Cell Development and Activity in Vitro and in Hu-Pbl-Scid Mice [DOI]
  153. 153 Contribution of Ebola Virus Glycoprotein, Nucleoprotein, and VP24 to Budding of VP40 Virus-Like Particles [DOI]
  154. 154 Ebola Virus VP30-Mediated Transcription Is Regulated by RNA Secondary Structure Formation [DOI]
  155. 155 Productive Replication of Ebola Virus Is Regulated by the c-Abl1 Tyrosine Kinase [DOI]
  156. 156 Identification of Ebola virus sequences present as RNA or DNA in organs of terrestrial small mammals of the Central African Republic [DOI]
  157. 157 Characterization of the L gene and 5' trailer region of Ebola virus. [DOI]
  158. 158 Identification of a Small-Molecule Entry Inhibitor for Filoviruses [DOI]
  159. 159 Nedd4 Regulates Egress of Ebola Virus-Like Particles from Host Cells [DOI]
  160. 160 Characterization of the Ebola virus nucleoprotein-RNA complex [DOI]
  161. 161 Filovirus‐Like Particles Produced in Insect Cells: Immunogenicity and Protection in Rodents [DOI]
  162. 162 Transcriptome Sequencing and Annotation for the Jamaican Fruit Bat (Artibeus jamaicensis) [DOI]
  163. 163 Ebola virus disease - pathogenesis, clinical presentation and management.

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