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Research in the Joseph Margolick Lab focuses on the many effects of HIV/AIDS on human health. We are particularly interested in the mechanisms of T-cell loss and preservation among people infected with HIV and the evaluation of human immune functions.
Dr. Sohn's lab is interested in understanding how biological stress-sensors are assembled, detect danger signals and initiate stress response.
Innate immunity is the first line of defense against invading pathogens in higher eukaryotes. We are using in vitro quantitative biochemical assays and mutagenesis and x-ray crystallography to investigate the underlying operating principles of inflammasomes, a component of the innate immune system, to better understand biological stress sensors.
The Michael Edidin Lab studies membrane dynamics and organization in cells from lymphocytes to epithelial cells using biochemistry, biophysics (especially fluorescence methods), cell biology, biochemistry and immunology. We are interested in transplantation immunology, particularly in the cell biology of class I MHC molecules, and are working to understand the relationship between plasma membrane biophysics and antigen presentation by MHC molecules. We are currently studying the clustering of T cell receptors for the antigen TCR.
Research in the Nadia Hansel Lab investigates the clinical, pathophysiologic and public health aspects of pulmonary diseases, with a focus on asthma and chronic obstructive pulmonary disease (COPD). We have explored how environmental exposures, nutrition and diet, comorbidity and other factors influence the outcomes of diseases such as asthma and COPD.
Research in the Robert Siliciano Laboratory focuses on HIV and antiretroviral therapy (ART). ART consists of combinations of three drugs that inhibit specific steps in the virus life cycle. Though linked to reduced morbidity and mortality rates, ART is not curative. Through our research related to latently infected cells, we've shown that eradicating HIV-1 infection with ART alone is impossible due to the latent reservoir for HIV-1 in resting CD4+ T cells.
Our laboratory characterized the different forms of HIV-1 that persist in patients on ART. Currently, we are searching for and evaluating drugs that target the latent reservoir. We are also developing assays that can be used to monitor the elimination of this reservoir. We are also interested in the basic pharmacodynamic principles that explain how antiretroviral drugs work. We have recently discovered why certain classes of antiretroviral drugs are so effective at inhibiting viral replication. We are using this discovery along w...ith experimental and computational approaches to develop improved therapies for HIV-1 infection and to understand and prevent drug resistance. Finally, we are studying the immunology of HIV-1 infection, and in particular, the ability of some patients to control the infection without ART. view less
The Sean Leng Lab studies the biology of healthy aging. Specific projects focus on chronic inflammation in late-life decline; immunosenescence and its relationship to the basic biological and physiological changes related to aging and frailty in the human immune system; and T-cell repertoire analysis.
Current research in the Sean T. Prigge Lab explores the biochemical pathways found in the apicoplast, an essential organelle found in malaria parasites, using a combination of cell biology and genetic, biophysical and biochemical techniques. We are particularly focused on the pathways used for the biosynthesis and modification of fatty acids and associated enzyme cofactors, including pantothenate, lipoic acid, biotin and iron-sulfur clusters. We want to better understand how the cofactors are acquired and used, and whether they are essential for the growth of blood-stage malaria parasites.
The Soloski Lab works to understand how infection can lead to the development of chronic immune-mediated diseases. Our lab studies the role of cellular immune response in controlling infection with gram-negative bacterial pathogens, such as Salmonella typhimurium. Our work has recently focused on the role of the intestinal mucosal immune compartment in controlling oral infection. This effort has identified a new unrecognized subset of T cells residing within the epithelial barrier that expands following infection. Current efforts concentrate on understanding the recognition properties and effector function of this T cell subset and determining if an analogous population exists in the human mucosa. We also strive to understand the human host immune response to infection with Borrelia burgdorfer, the causative agent of Lyme disease.
Chronic viral hepatitis (due to HBV and HCV) is a major cause of liver disease worldwide, and an increasing cause of death in persons living with HIV/AIDS. Our laboratory studies are aimed at better defining the host-pathogen interactions in these infections, with particular focus on humoral and cellular immune responses, viral evasion, inflammation, fibrosis progression, and drug resistance. We are engaged in synthetic biology approaches to rational vaccine development and understanding the limits on the extraordinary genetic variability of HCV.
Our lab currently focuses on three areas of immunotherapy research: gaining a deeper knowledge of the biological underpinnings of human autoimmune response; discovering biomarkers that will help us identify which patients and tumor types are most likely to respond to various immune therapies; and developing immune-based treatment combinations that could deliver a more powerful anti-tumor response than monotherapies.
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