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Virology in the Department of Microbiology at UAB

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Virology in the Department of Microbiology at UAB Virology in the Department of Microbiology at UAB Uninfected HCMV infected Virus/Host Interactions Sunnie Thompson Richard Whitley Quanjun Li William Britt Allan Zajac Dengue Picornaviridae Herpesviridae Herpesviridae Arenaviridae Reoviridae HCV (HCMV) LCMV Dicistroviridae Togaviridae Therapeutic & Apoptosis Assembly Viral Translation Vaccine Drug Discovery Immunity Immunology Development Inflammation Identification of Host Factors Involved in Viral Amplification 1. 2. Sunnie Thompson Mock Polio 3. VPg Polyprotein AAAAAAA ILF3 kDa Matrin‐3 170- hnRNP U Host Factors 130- Nucleolin 95- P72 72- PABP1 55- IMP1 1. Infect cells with virus hnRNP L 43- PTB 2. Crosslink proteins to viral La RNA in vivo 34- hnRNP K hnRNP G 3. Identify proteins PCBP2 26- hnRNP A2/B1 4. Determine their role in hnRNP C1/C2 1 2 3 4 the viral life cycle RPS25 is essential for translation initiation by the Dicistroviridae and hepatitis C viral IRESs Landry et al. (2009) 23: 2764 CrPV IGR IRES HCV IRES E site Sunnie Thompson Depleon of RPS25 inhibits HCV replicaon in cell culture. RPS25 is not an essenal protein. RPS25 is a good target for anviral or ancancer therapeucs. Schuler et al. (2006) Nat. Sturct. Mol. Biol. 13:1092‐6 Spahn et al. (2001) Science 291:1959‐62 Future Direcons: 1. Can HCV develop escape mutants that no longer require RPS25. 2. Use yeast genecs to idenfy which Rps25p amino acids interact with the IRESs 3. Idenfy inhibitors to RPS25 to develop anvirals Richard Whitley Probe the natural history of human herpes simplex virus infecons to determine Richard Whitley virulence factors Engineer Herpes Simplex Virus to be used for therapeuc purposes – Therapy of Glioblastoma mulforme – Express foreign genes – Use as a vector for HIV angens – Develop a live aenuated herpes simplex vaccine Identification of Novel Antivirals against Dengue and Other Mosquito-Borne Diseases • Drug discovery and development Quanjun Li – Anvirals • Dengue virus ( Flaviviridae) and other Arboviruses • Bluetongue virus (Reoviridae) – An‐malaria • Plasmodium falciparum • Host‐vector‐pathogen interacons – Mechanism of acon studies for novel anvirals – Anviral efficacy evaluaon in animal models – The role of apoptosis during Arbovirus infecon Bill Britt: HCMV 1) Assembly of Human Cytomegalovirus William Britt 2) Immunological Control of Virus Infection of CNS 3) Inflammation and Altered HCMV as a model Neurodevelopment β-herpesvirus 4) Vaccine development for Human Cytomegalovirus 5) Role of Virus Induced Inflammation and Allograft Loss William Britt VIRAL IMMUNOLOGY Key Questions: Allan Zajac Why are certain infections rapidly controlled? Why are certain infections never controlled? Approaches: Determining the cellular, molecular, and biochemical properties of “protective” and “exhausted” T cell responses Successful versus Unsuccessful Infection Control Acute Virus rapidly cleared Infection e.g. LCMV-Armstrong Infection of Normal Adult Mice Allan Zajac Protracted Virus slowly cleared Infection e.g. LCMV-clone 13 Infection of Normal Adult Mice Lifelong Virus never cleared Infection e.g. LCMV Infection of Certain Immunocompromised Mice Structural Virology Jamil Saad Ming Luo Terje Dokland Peter Prevelige HIV VSV HIV HIV Influenza Bacteriophage 80α Bacteriophage P22 X-Ray Cryo-EM Mass Spectrometry Crystallography NMR X-Ray Nano particles Antivirals Crystallography Virus structure and Assembly Biochemical, Biophysical and Structural Biology Tools are employed to study HIV-host interactions Jamil Saad State-of-the-art 700 MHz NMR Instrument Jamil Saad Nuclear Magnec Resonance (NMR) Protein‐protein interacons studied by NMR methods VSV Nucleocapsid-like Particle: Structure The N-terminus and an extended loop near the C- terminal domain make extensive cross-molecule interactions, required for encapsidation of the RNA Ming Luo Crystal Structure Cartoon (Green et al., Science, 2006, 313:357-360.) Influenza virus Attachment and Entry Ming Luo Influenza virus entry Hemagglutinin (HA) glycoprotein trimer Cryo-electron microscopy of viruses Terje Dokland The 200kV FEG electron microscope at UAB Cryo-electron microscopy allows biological structures to be visualized in their native state, in the absence of staining, fixation and dehydration artifacts. Cryo-electron microscopy of viruses Terje Dokland HIV VLPs Staphylococcus aureus bacteriophage 80α • 13Å 3D reconstruction of 80α Bio-nanotechnology using P22 Virus Capsids as a Platform for Medical and Energy Science Procapsid Shell Wiffle Ball Peter Prevelige . Capsid is 60 nm diameter, 420 protein subunits . 10 nm holes allow solvent access . Stable to high temperature . Can insert pepdes that are displayed on outside . Can vary the number of pepde tags to tune the avidity . Can do in vivo phage display to target tumors . Can carry cargo inside: fluorophores and gadolinium for imaging semiconductors for energy proteins for therapy http://www.microbio.uab.edu/faculty/prevelige/index.html In vivo fluorescence imaging (FMT) of carotid arteries HFn injected mouse Peter Prevelige Pre 24h 48h 48h RGD4C‐HFn injected mouse Pre 24h 48h 48h Collaborations • Collaborator with Model System where there is a need for improved Peter Prevelige imaging • facility with animal model and willingness to parcipate • Idenficaon of targeng tags for inial development stage Viral Genomics and Evolution Elliot Lefkowitz Richard Kraslow Beatrice Hahn Poxviridae HIV HIV HCV KSHV SIV Dengue HCV AIDS-associated lymphoma Bioinformatics Viral Evolution Viral Evolution Epidemiology Origin of viruses Viral Genomics Viral genomics and Evolution • Role of individual genes in virus replicaon, host interacon, virulence, and pathogenesis Elliot Lefkowitz • Analysis of genome sequence, gene expression, immune interacon, and host pathWay interacon informaon ulizing (and developing) bioinformacs tools and techniques • Understanding the process and consequences of virus diversity and evoluon Origins of Poxvirus HT Genes Elliot Lefkowitz Number of genes 22 Poxvirus:Host Co-Speciation Elliot Lefkowitz Immunogenetic determinants in AIDS Approach: • Molecular genetics and epidemiology are applied to examine how human gene variations determine the occurrence and Richard Kraslow outcome of infectious and other diseases of immunity. Findings: • Demonstrated the strong influence of multiple combinations of polymorphic markers in the HLA region on the outcome of HIV-1 infection Origin and Evolution of Lentiviruses First to describe the genetic variability of HIV-1 Traced the Origins of HIV-1 to Cameroon Beatrice Hahn Discovered that recombination between highly divergent viruses represents a major driving force of HIV and SIV diversification Discovered that SIVcpz is pathogenic (AIDS-like disease) in wild-living chimpanzees Additional Faculty • Paul Goepfert, M.D. Virology; vaccines • John Kappes, Ph.D. HIV; molecular virology and pathogenesis • Casey Morrow, Ph.D. Viral morphogenesis and replicaon gene therapy and vaccines • George Shaw, M.D. Human retroviruses; molecular virology an pathogenesis • Wayne Sullender, M.D. Respiratory syncyal virus; angenic diversity • Mark Pritchard, Ph.D. Herpes and Orthopox Anvirals .
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