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Subroto Chatterjee

Subroto Chatterjee

Johns Hopkins


Research Interest

In this laboratory we study the relationship between the cardiovascular gene family and the various phenotypic changes (cell proliferation,adhesion and apoptosis) that lead to the inititation and progression of atherogenesis. We are also interested in alternative medicine drug discovery to prevent atherosclerosis.Our model systems are cultured human cells of the vascualr wall and animal models of athersclerosis.We also employ transeosophageal MRI technology to image atherosclerotic plaques and their rupture and regression in collaboration with the JHU-SOM faculty. Our laboratory has discovered that multiple risk factors in atherosclerosis such as oxidized LDL, shear stress,nicotine,all converge upon a lactosylceramide synthase gene to produce lactosylceramide. In turn, lactosylceramide serves as a lipid second messenger that activates an "oxygen sensitive signal transduction pathway" leading to cell proliferation and cell adhesion. We are also focusing on the neutral sphingomyelinase gene that is upregulated by inflammatory molecules such as Fas Apo1(CD95) , tumor necrosis factor and stress that leads to apoptosis. Since apoptosis of the aortic smooth muscle cells is a hallmark in the pathophysiology of plaque rupture we want to understand its biochemical/molecular basis involving this gene/function. Our herbal drug discovery strategy involve purification and characterization of small molecules employing high-performance liquid chromatography,GC-MS technology. Such well characterized molecules are then employed to determine their efficacy in abrogating atherogenesis and plaque rupture employing animal models.