Jason K. Whitmire

A Role for Perforin in Downregulating T-Cell Responses during Chronic Viral Infection

Matloubian, Mehrdad, Suresh, M., Glass, Alison, Galvan, Marisa, Chow, Kit, Whitmire, Jason K., ...

Cytotoxic T cells secrete perforin to kill virus-infected cells. In this study we show that perforin also plays a role in immune regulation. Perforin-deficient (perf −/−) mice chronically...

Long-Term CD4 Th1 and Th2 Memory following Acute Lymphocytic Choriomeningitis Virus Infection

Whitmire, Jason K., Asano, Mary S., Murali-Krishna, Kaja, Suresh, M., Ahmed, Rafi

CD4 T cells play a central role in viral immunity. They provide help for B cells and CD8 T cells and can act as effectors themselves. Despite their importance, relatively little is known about the...

Role of Lymphotoxin α in T-Cell Responses during an Acute Viral Infection

Suresh, M., Lanier, Gibson, Large, Mary Katherine, Whitmire, Jason K., Altman, John D., Ruddle, Nancy H., ...

The importance of lymphotoxin α (LTα) in lymphoid organogenesis is well established. Although LTα has been implicated in the pathogenesis of T-cell-mediated immunopathologies, the requirement for...

CD4 on CD8+ T cells directly enhances effector function and is a target for HIV infection

Kitchen, Scott G., Jones, Nicole R., LaForge, Stuart, Whitmire, Jason K., Vu, Bien-Aimee, Galic, Zoran, ...

Costimulation of purified CD8+ T lymphocytes induces de novo expression of CD4, suggesting a previously unrecognized function for this molecule in the immune response. Here, we report that the CD4...

The CD4 molecule on CD8+ T lymphocytes directly enhances the immune response to viral and cellular antigens

Kitchen, Scott G., Whitmire, Jason K., Jones, Nicole R., Galic, Zoran, Kitchen, Christina M. R., Ahmed, Rafi, ...

CD8+ T lymphocytes play a major role in cellular-mediated immune responses to foreign antigen. We have previously demonstrated that costimulation of purified human CD8+ T cells induces de novo...

A Role for Perforin in Downregulating T-Cell Responses during Chronic Viral Infection

Matloubian, Mehrdad, Suresh, M., Glass, Alison, Galvan, Marisa, Chow, Kit, Whitmire, Jason K., ...

Cytotoxic T cells secrete perforin to kill virus-infected cells. In this study we show that perforin also plays a role in immune regulation. Perforin-deficient (perf −/−) mice chronically...

Long-Term CD4 Th1 and Th2 Memory following Acute Lymphocytic Choriomeningitis Virus Infection

Whitmire, Jason K., Asano, Mary S., Murali-Krishna, Kaja, Suresh, M., Ahmed, Rafi

CD4 T cells play a central role in viral immunity. They provide help for B cells and CD8 T cells and can act as effectors themselves. Despite their importance, relatively little is known about the...

Role of Lymphotoxin α in T-Cell Responses during an Acute Viral Infection

Suresh, M., Lanier, Gibson, Large, Mary Katherine, Whitmire, Jason K., Altman, John D., Ruddle, Nancy H., ...

The importance of lymphotoxin α (LTα) in lymphoid organogenesis is well established. Although LTα has been implicated in the pathogenesis of T-cell-mediated immunopathologies, the requirement for...

CD4 on CD8+ T cells directly enhances effector function and is a target for HIV infection

Kitchen, Scott G., Jones, Nicole R., LaForge, Stuart, Whitmire, Jason K., Vu, Bien-Aimee, Galic, Zoran, ...

Costimulation of purified CD8+ T lymphocytes induces de novo expression of CD4, suggesting a previously unrecognized function for this molecule in the immune response. Here, we report that the CD4...

The CD4 molecule on CD8+ T lymphocytes directly enhances the immune response to viral and cellular antigens

Kitchen, Scott G., Whitmire, Jason K., Jones, Nicole R., Galic, Zoran, Kitchen, Christina M. R., Ahmed, Rafi, ...

CD8+ T lymphocytes play a major role in cellular-mediated immune responses to foreign antigen. We have previously demonstrated that costimulation of purified human CD8+ T cells induces de novo...

Persistent Macrophage/Microglial Activation and Myelin Disruption after Experimental Autoimmune Encephalomyelitis in Tissue Inhibitor of Metalloproteinase-1-Deficient Mice

Crocker, Stephen J., Whitmire, Jason K., Frausto, Ricardo F., Chertboonmuang, Parntip, Soloway, Paul D., Whitton, J. Lindsay, ...

Increased leukocyte trafficking into the parenchyma during inflammatory responses in the central nervous system (CNS) is facilitated by the extracellular proteolytic activities of matrix...

HLA-A2-Restricted Protection against Lethal Lymphocytic Choriomeningitis▿ †

Botten, Jason, Whitton, J. Lindsay, Barrowman, Polly, Sidney, John, Whitmire, Jason K., Alexander, Jeff, ...

The consequences of human lymphocytic choriomeningitis virus (LCMV) infection can be severe, including aseptic meningitis in immunocompetent individuals, hydrocephalus or chorioretinitis in fetal...

Interferon-γ acts directly on CD8+ T cells to increase their abundance during virus infection

Whitmire, Jason K., Tan, Joyce T., Whitton, J. Lindsay

Interferon-γ (IFNγ) is important in regulating the adaptive immune response, and most current evidence suggests that it exerts a negative (proapoptotic) effect on CD8+ T cell responses. We have...

Tentative T Cells: Memory Cells Are Quick to Respond, but Slow to Divide

Whitmire, Jason K., Eam, Boreth, Whitton, J. Lindsay

T cell memory is a cornerstone of protective immunity, and is the key element in successful vaccination. Upon encountering the relevant pathogen, memory T cells are thought to initiate cell division...

Amelioration of Coxsackievirus B3-Mediated Myocarditis by Inhibition of Tissue Inhibitors of Matrix Metalloproteinase-1

Crocker, Stephen J., Frausto, Ricardo F., Whitmire, Jason K., Benning, Nicola, Milner, Richard, Whitton, J. Lindsay

Coxsackievirus B3 (CVB3) is a major cause of acute myocarditis, a serious condition that is refractory to treatment. Myocardial damage results in tissue remodeling that, if too extensive, may...

Platelets prevent IFN-α/β-induced lethal hemorrhage promoting CTL-dependent clearance of lymphocytic choriomeningitis virus

Iannacone, Matteo, Sitia, Giovanni, Isogawa, Masanori, Whitmire, Jason K., Marchese, Patrizia, Chisari, Francis V., ...

We found that mice infected with different isolates of lymphocytic choriomeningitis virus (LCMV) develop a mild hemorrhagic anemia, which becomes severe and eventually lethal in animals depleted of...

Conserved T Cell Receptor Repertoire in Primary and Memory CD8 T Cell Responses to an Acute Viral Infection

Sourdive, David J.D., Murali-Krishna, Kaja, Altman, John D., Zajac, Allan J., Whitmire, Jason K., Pannetier, Christophe, ...

Viral infections often induce potent CD8 T cell responses that play a key role in antiviral immunity. After viral clearance, the vast majority of the expanded CD8 T cells undergo apoptosis, leaving...