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Articles 61 - 63 of 63
Full-Text Articles in Cell Biology
Regulatory And Functional Aspects Of Foxo3a Transcription Factor And Their Implications In Prostate Cancer, Melissa Elise Dobson
Regulatory And Functional Aspects Of Foxo3a Transcription Factor And Their Implications In Prostate Cancer, Melissa Elise Dobson
Wayne State University Dissertations
The P13K/Akt pathway is a critical mediator of growth factor signaling involving many cellular functions. The deregulation of this pathway has been shown to be involved in the development of various cancers. One of the main targets of this pathway is FoxO3a, a transcription factor whose target genes are involved in important cellular processes such as apoptosis, cell cycle control, and glucose metabolism. FoxO3a is regulated by various post translational modifications including acetylation, ubiquitination and phosphorylation. The transcription factor is directly phosphorylated by Akt on 3 residues: Threonine 32, Serine 253 and Serine 315. Phosphorylation by Akt generates binding sites …
Matriptase/Pdgf D/Beta-Pdgfr Signaling Axis In Human Prostate Cancer: The Role Of Pten In The Regulation Of Pdgf D Expression, M. Katie Conley-Lacomb
Matriptase/Pdgf D/Beta-Pdgfr Signaling Axis In Human Prostate Cancer: The Role Of Pten In The Regulation Of Pdgf D Expression, M. Katie Conley-Lacomb
Wayne State University Dissertations
Platelet Derived Growth Factor (PDGF) is a family of mesenchymal growth factors that regulate cell proliferation, migration, and differentiation. Unlike the classic PDGF ligands A and B, which are secreted as active dimers, PDGF D must undergo extracellular proteolytic processing to remove its N-terminal CUB domain from the C-terminal PDGF growth domain before the ligand is able to stimulate its receptor, PDGF receptor beta (?-PDGFR). Importantly, recent clinical studies have shown that ?-PDGFR is upregulated in primary prostate cancer and bone metastases. However, PDGF B, formerly thought to be the sole ligand for ?-PDGFR, is not expressed in clinical prostate …
Fine Structure Of The Substantia Nigra Pars Lateralis In The Opossum, Terrence Paul Ma
Fine Structure Of The Substantia Nigra Pars Lateralis In The Opossum, Terrence Paul Ma
Wayne State University Dissertations
The cytoarchitecture of the substantia nigra pars lateralis (SNl) of the opossum was examined by light and electron microscopic procedures. Nissl-stained, Golgi-impregnated, HRP-reacted and electron microscopic preparations were utilized in this study. SNl neurons were divided into three groups on the basis of cell size; small, medium-sized, and large neurons. Small cells had a nucleus with some clumped heterochromatin, a relatively organelle-free cytoplasm, and long, thin, sparcely branching dendrites. Electron microscopic examination of small cells confirmed the light microscopic observations. Medium-sized neurons possessed a relatively clear nucleus, clumps of Nissl substance, especially at a juxtanuclear position near the emergence of …