TGF-β has been named the molecular Jekyll and Hyde of cancer due to its ability to both suppress and promote tumor development. Components of the TGF-β signaling pathway are often mutated in cancer to inhibit the tumor suppressor roles of TGF-β. Our lab studies how a 3-alanine deletion in the...
Desmosomes are adhesive complexes found at sites of intercellular contact that are essential for mediating cell-cell adhesion. These junctions undergo regulated assembly and reorganization during processes such as embryogenesis and wound healing. Plakophilins (PKPs) are armadillo family members related to the classic cadherin-associated protein p120ctn. PKPs localize to the cytoplasmic...
The cause(s) of Aβ overproduction and accumulation in SAD are unknown; however, several lines of evidence indicate that impaired energy metabolism in the brain may be involved. Furthermore, the rate-limiting enzyme in Aβ production, BACE1, is elevated in SAD brains around amyloid plaques, indicating that BACE1 may also play a...
Mechanisms of RNA Mediated Silencing in S. pombe Christina A. Lawrence Heterochromatin of eukaryotic genomes has classically been defined as condensed chromatin that is repressive to transcription and typically resides at highly repetitive regions of the genome. Genetic and molecular analyses have demonstrated that these regions are essential for genome...
Epstein-Barr virus (EBV) is a human herpesvirus that is able to infect both epithelial cells as well as B lymphocytes, where the virus stablishes life-long latency in the host. Five glycoproteins are involved in infection of B cells: gp350/220 for initial tethering of the virus to the cell via CD21,...
The T-box transcription factor, Tbx5, is involved in heart development and congenital disease. For example mutations in human TBX5 lead to Holt-Oram syndrome, a disease characterized by a range of heart and arm malformations. Tbx5 gene activity has been perturbed in several animal models including the chicken, mouse, and zebrafish....
Latent membrane protein 2A (LMP2A) and LMP2B are viral proteins expressed during Epstein-Barr virus (EBV) latency in EBV-infected B cells both in cell culture and in vivo. Although Lyn has been shown to be important in mediating LMP2A signaling, it is still unclear if Lyn is used preferentially or if...
Cardiovascular disease is a leading cause of morbidity and mortality worldwide. While many therapies have been used to treat vascular disease symptomatically, gene therapy offers a means of treating the molecular dysfunctions driving disease pathogenesis. Unfortunately, gene therapy has achieved only modest therapeutic success in clinical trials due to a...
Herpes simplex virus (HSV) infection of host cells requires virus attachment to the cell surface and subsequent membrane fusion between the virus envelope and host cell membrane to deliver the nucleocapsid containing the viral genome into the host cell. A proposed mechanism for HSV glycoprotein-induced membrane fusion is gD binding...
Chagas heart disease, caused by infection with the protozoan parasite Trypanosoma cruzi, is still regarded as a major public health problem in Central and South America. The finding of cardiac specific autoimmunity during infection in both humans and experimental animals has provided a basis for investigation of its potential role...