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Full-Text Articles in Biochemistry, Biophysics, and Structural Biology

Prolactin And Isplatin Combination Treatment Inhibit Tumorspheres Formation And Tumor Growth In Mice, Eric Hingleung Lee Dec 2013

Prolactin And Isplatin Combination Treatment Inhibit Tumorspheres Formation And Tumor Growth In Mice, Eric Hingleung Lee

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Cancer stem cells (CSCs) are defined as a small population of tumor initiating cells that are responsible for the initiation, development, progression, and recurrence of cancer. The chemo and radiation resistance of CSCs remains one of the major obstacles in conventional anti-cancer therapies. One of the reasons that conventional chemotherapeutics are not effective in targeting CSCs is that CSCs are usually in a non-proliferative or dormant state. In this perspective, targeting CSCs by inducing its proliferation and differentiation and simultaneously applying chemotherapeutics may be an alternative approach. The current study investigates the effect of prolactin (PRL), a hormone intimately involved …


Biochemical Investigation Into Initiation Of Fatty Acid Synthesis In The African Trypanosomes, Sunayan Ray Aug 2013

Biochemical Investigation Into Initiation Of Fatty Acid Synthesis In The African Trypanosomes, Sunayan Ray

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My doctoral studies focused on studying FA metabolism in the deadly protozoan parasite T. brucei. In my dissertation, I will be addressing various aspects of the regulation of TbACC, which catalyzes the first committed step in FA synthesis. In the second chapter, I hypothesized that TbACC is regulated in response to environmental lipids. I examined changes in TbACC RNA, protein, and activity in response to different levels of environmental lipids in both BF and PF cells. I also delineated the mechanisms by which TbACC expression and activity is regulated by phosphorylation in response to altered lipid environments. In the third …


Role Of Phosphoinositide-Based Signaling In Virulence In Entamoeba Histolytica, Amrita Koushik Aug 2013

Role Of Phosphoinositide-Based Signaling In Virulence In Entamoeba Histolytica, Amrita Koushik

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Entamoeba histolytica is an intestinal protozoan parasite and is the causative agent of amoebiasis. Upon entering the human host, cellular processes such as adhesion, phagocytosis, motility and secretion play a vital role in its propagation and pathogenicity. In other systems, each of these cellular processes is preceded by activation of signal transduction pathways, which often involve membrane phosphoinositides such as phosphatidylinositol 4,5-bisphosphate (PI(4,5)P2). Little is known about phosphoinositide signaling in E. histolytica pathogenicity. In this study, we demonstrated that PI(4,5)P2 is localized to cholesterol-rich microdomains, lipid rafts, of the E. histolytica membrane and to the trailing edge …