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Articles 1 - 4 of 4
Full-Text Articles in Molecular Biology
Live-Cell Monitoring Of Periodic Gene Expression In Synchronous Human Cells Identifies Forkhead Genes Involved In Cell Cycle Control, Gavin D. Grant, Joshua Gamsby, Viktor Martyanov, Lionel Brooks, Lacy K. George, J. Matthew Mahoney, Jennifer J. Loros, Jay C. Dunlap, Michael L. Whitfield
Live-Cell Monitoring Of Periodic Gene Expression In Synchronous Human Cells Identifies Forkhead Genes Involved In Cell Cycle Control, Gavin D. Grant, Joshua Gamsby, Viktor Martyanov, Lionel Brooks, Lacy K. George, J. Matthew Mahoney, Jennifer J. Loros, Jay C. Dunlap, Michael L. Whitfield
Dartmouth Scholarship
We developed a system to monitor periodic luciferase activity from cell cycle-regulated promoters in synchronous cells. Reporters were driven by a minimal human E2F1 promoter with peak expression in G1/S or a basal promoter with six Forkhead DNA-binding sites with peak expression at G2/M. After cell cycle synchronization, luciferase activity was measured in live cells at 10-min intervals across three to four synchronous cell cycles, allowing unprecedented resolution of cell cycle-regulated gene expression. We used this assay to screen Forkhead transcription factors for control of periodic gene expression. We confirmed a role for FOXM1 and identified two novel cell cycle …
Contribution Of Taxane Biosynthetic Pathway Gene Expression To Observed Variability In Paclitaxel Accumulation In Taxus Suspension Cultures, Rohan A. Patil, Martin E. Kolewe, Jennifer Normanly, Elsbeth L. Walker, Susan C. Roberts
Contribution Of Taxane Biosynthetic Pathway Gene Expression To Observed Variability In Paclitaxel Accumulation In Taxus Suspension Cultures, Rohan A. Patil, Martin E. Kolewe, Jennifer Normanly, Elsbeth L. Walker, Susan C. Roberts
Jennifer Normanly
Variability in product accumulation is one of the major obstacles limiting the widespread commercialization of plant cell culture technology to supply natural product pharmaceuticals. Despite extensive process engineering efforts, which have led to increased yields, plant cells exhibit variability in productivity that is poorly understood. Elicitation of Taxus cultures with methyl jasmonate (MeJA) induces paclitaxel accumulation, but to varying extents in different cultures. In this work, cultures with different aggregation profiles were established to create predictable differences in paclitaxel accumulation upon MeJA elicitation. Expression of known paclitaxel biosynthetic genes in MeJA-elicited cultures exhibiting both substantial (15-fold) and moderate (2-fold) differences …
Signals Delivered By Interleukin-7 Regulate The Activities Of Bim And Jund In T Lymphocytes, Shannon Moore Ruppert
Signals Delivered By Interleukin-7 Regulate The Activities Of Bim And Jund In T Lymphocytes, Shannon Moore Ruppert
Electronic Theses and Dissertations
Interleukin-7 (IL-7) is an essential cytokine for lymphocyte growth that has the potential for promoting proliferation and survival. While the survival and proliferative functions of IL-7 are well established, the identities of IL-7 signaling components in pathways other than JAK/STAT, that accomplish these tasks remain poorly defined. To this end, we used IL-7 dependent T-cells to examine those components necessary for cell growth and survival. Our studies revealed two novel signal transducers of the IL-7 growth signal: BimL and JunD. IL-7 promoted the activity of JNK (Jun N-terminal Kinase), and that JNK, in turn, drove the expression of JunD, a …
Gld-1 Represses Its Puf Mrna Targets Prior To/At Initiation Of Translation In The C.Elegans Germline, Gautham Sarathy
Gld-1 Represses Its Puf Mrna Targets Prior To/At Initiation Of Translation In The C.Elegans Germline, Gautham Sarathy
Legacy Theses & Dissertations (2009 - 2024)
The C.elegans germline offers an ideal system to study posttranscriptional regulation of gene expression as it is a major mechanism through which the control over gene expression is achieved. GLD-1 (defective in GermLine Development) is a maxi-KH motif containing RNA binding protein that controls various aspects of germline development from decision over germcell proliferation vs. meiotic entry to the production of mature gametes suggesting that GLD-1 likely controls many mRNA targets.