Open Access. Powered by Scholars. Published by Universities.®

Medicine and Health Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

Articles 1 - 6 of 6

Full-Text Articles in Medicine and Health Sciences

Murine Cmv Infection Induces The Continuous Production Of Mucosal Resident T Cells., Corinne J Smith, Sofia Caldeira-Dantas, Holly Turula, Christopher M. Snyder Nov 2015

Murine Cmv Infection Induces The Continuous Production Of Mucosal Resident T Cells., Corinne J Smith, Sofia Caldeira-Dantas, Holly Turula, Christopher M. Snyder

Department of Microbiology and Immunology Faculty Papers

Cytomegalovirus (CMV) is a herpesvirus that persists for life and maintains extremely large numbers of T cells with select specificities in circulation. However, it is unknown how viral persistence impacts T cell populations in mucosal sites. We found that many murine (M)CMV-specific CD8s in mucosal tissues became resident memory T cells (TRM). These cells adopted an intraepithelial localization in the salivary gland that correlated with, but did not depend on, expression of the integrin CD103. MCMV-specific TRM cells formed early after infection, and spleen-localized cells had reduced capacities to become TRM at late times. Surprisingly, however, small numbers of new …


Reverse Genetics Of Mononegavirales: How They Work, New Vaccines, And New Cancer Therapeutics., Christian K Pfaller, Roberto Cattaneo, Matthias J. Schnell May 2015

Reverse Genetics Of Mononegavirales: How They Work, New Vaccines, And New Cancer Therapeutics., Christian K Pfaller, Roberto Cattaneo, Matthias J. Schnell

Department of Microbiology and Immunology Faculty Papers

The order Mononegavirales includes five families: Bornaviridae, Filoviridae, Nyamaviridae, Paramyxoviridae, and Rhabdoviridae. The genome of these viruses is one molecule of negative-sense single strand RNA coding for five to ten genes in a conserved order. The RNA is not infectious until packaged by the nucleocapsid protein and transcribed by the polymerase and co-factors. Reverse genetics approaches have answered fundamental questions about the biology of Mononegavirales. The lack of icosahedral symmetry and modular organization in the genome of these viruses has facilitated engineering of viruses expressing fluorescent proteins, and these fluorescent proteins have provided important insights about the molecular and cellular …


Lymph Node But Not Intradermal Injection Site Macrophages Are Critical For Germinal Center Formation And Antibody Responses To Rabies Vaccination., Andrew G Lytle, Shixue Shen, James Mcgettigan Mar 2015

Lymph Node But Not Intradermal Injection Site Macrophages Are Critical For Germinal Center Formation And Antibody Responses To Rabies Vaccination., Andrew G Lytle, Shixue Shen, James Mcgettigan

Department of Microbiology and Immunology Faculty Papers

UNLABELLED: Replication-deficient rabies virus (RABV)-based vaccines induce rapid and potent antibody responses via T cell-independent and T cell-dependent mechanisms. To further investigate early events in vaccine-induced antibody responses against RABV infections, we studied the role of macrophages as mediators of RABV-based vaccine immunogenicity. In this report, we show that a recombinant matrix gene-deleted RABV-based vaccine (rRABV-ΔM) infects and activates primary murine macrophages in vitro. Immunization of mice with live RABV-based vaccines results in accumulation of macrophages at the site of immunization, which suggests that macrophages in tissues support the development of effective anti-RABV B cell responses. However, we show that …


The Onchocerciasis Vaccine For Africa-Tova-Initiative., Peter J Hotez, Maria Elena Bottazzi, Bin Zhan, Benjamin L Makepeace, Thomas R Klei, David Abraham, David W Taylor, Sara Lustigman Jan 2015

The Onchocerciasis Vaccine For Africa-Tova-Initiative., Peter J Hotez, Maria Elena Bottazzi, Bin Zhan, Benjamin L Makepeace, Thomas R Klei, David Abraham, David W Taylor, Sara Lustigman

Department of Microbiology and Immunology Faculty Papers

No abstract provided.


Memory T Cells Specific For Murine Cytomegalovirus Re-Emerge After Multiple Challenges And Recapitulate Immunity In Various Adoptive Transfer Scenarios., Michael Quinn, Holly Turula, Mayank Tandon, Berthony Deslouches, Toktam Moghbeli, Christopher M. Snyder Jan 2015

Memory T Cells Specific For Murine Cytomegalovirus Re-Emerge After Multiple Challenges And Recapitulate Immunity In Various Adoptive Transfer Scenarios., Michael Quinn, Holly Turula, Mayank Tandon, Berthony Deslouches, Toktam Moghbeli, Christopher M. Snyder

Department of Microbiology and Immunology Faculty Papers

Reconstitution of CMV-specific immunity after transplant remains a primary clinical objective to prevent CMV disease, and adoptive immunotherapy of CMV-specific T cells can be an effective therapeutic approach. Because of viral persistence, most CMV-specific CD8(+) T cells become terminally differentiated effector phenotype CD8(+) T cells (TEFF). A minor subset retains a memory-like phenotype (memory phenotype CD8(+) T cells [TM]), but it is unknown whether these cells retain memory function or persist over time. Interestingly, recent studies suggest that CMV-specific CD8(+) T cells with different phenotypes have different abilities to reconstitute sustained immunity after transfer. The immunology of human CMV infections …


Rhabdovirus-Based Vaccine Platforms Against Henipaviruses., Drishya Kurup, Christoph Wirblich, Heinz Feldmann, Andrea Marzi, Matthias J. Schnell Jan 2015

Rhabdovirus-Based Vaccine Platforms Against Henipaviruses., Drishya Kurup, Christoph Wirblich, Heinz Feldmann, Andrea Marzi, Matthias J. Schnell

Department of Microbiology and Immunology Faculty Papers

UNLABELLED: The emerging zoonotic pathogens Hendra virus (HeV) and Nipah virus (NiV) are in the genus Henipavirus in the family Paramyxoviridae. HeV and NiV infections can be highly fatal to humans and livestock. The goal of this study was to develop candidate vaccines against henipaviruses utilizing two well-established rhabdoviral vaccine vector platforms, recombinant rabies virus (RABV) and recombinant vesicular stomatitis virus (VSV), expressing either the codon-optimized or the wild-type (wt) HeV glycoprotein (G) gene. The RABV vector expressing the codon-optimized HeV G showed a 2- to 3-fold increase in incorporation compared to the RABV vector expressing wt HeV G. There …