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Articles 1 - 6 of 6
Full-Text Articles in Life Sciences
Stationary Phase Mutagenesis In Bacillus Subtilis: The Interaction Between Transcription And Error-Prone Replication In Conditions Of Stress, Mary Girard, Eduardo Robleto
Stationary Phase Mutagenesis In Bacillus Subtilis: The Interaction Between Transcription And Error-Prone Replication In Conditions Of Stress, Mary Girard, Eduardo Robleto
Undergraduate Research Opportunities Program (UROP)
While under conditions of stress, non-dividing cells may acquire beneficial mutations. This is referred to as stationary phase mutagenesis, or adaptive mutagenesis. Previous research has shown that actively transcribed genes and those under selective pressure are prone to mutations that confer escape from non-dividing conditions. Accordingly, strains lacking transcription factors have shown a drastically lower number of mutations that confer escape while under amino acid starvation than those observed in the wildtype background. Also, error-prone DNA polymerases are known to be active in cells under stress and it has been shown that strains lacking an error-prone DNA polymerase display reduced …
Pdest Fg12-Cmv Dsred Vector, Jarod Wolffis, Sheri L. Holmen
Pdest Fg12-Cmv Dsred Vector, Jarod Wolffis, Sheri L. Holmen
Undergraduate Research Opportunities Program (UROP)
Melanoma is the most rapidly increasing malignancy among young people in the United States. If detected early, the disease is easily treated; however, once the disease has metastasized it is largely refractory to conventional therapies and is associated with a high mortality rate. The development of human cancer from a pre-malignant primary tumor to a metastatic lesion that develops at secondary sites is thought to be a multi-step process, requiring many genetic and epigenetic events that provide a growth advantage to cells. It is still unclear which of the many genetic changes in human cancers are required for metastasis. Therefore, …
Expression Of An Alternate Splice Form Of Bmi-1 In Multiple Myeloma, Adam Austin, Kristine Veys, Debbie Wong, James Tung
Expression Of An Alternate Splice Form Of Bmi-1 In Multiple Myeloma, Adam Austin, Kristine Veys, Debbie Wong, James Tung
Undergraduate Research Opportunities Program (UROP)
The concept of “tumor stem cells” has garnered much attention in the last few years. Tumor stem cells are believed to exist among a heterogeneous group of cells that constitute a tumor. These tumor stem cells often express genes that are important for stem cell function, cell division, and maintenance of pluripotent state in stem cells. Stem cell or stem cell maintenance genes such as SALL 4 and Bmi-1 are often seen in these cancer cells and contribute to self-renewing divisions and cancer cell survival. In particular, high expression of Bmi-1 (B lymphoma mouse Moloney leukemia virus insertion region), a …
Role Of Ecdysone Signaling In Fat Body Remodeling, Marsha Kristel Bernardo, N. Bond, Allen G. Gibbs
Role Of Ecdysone Signaling In Fat Body Remodeling, Marsha Kristel Bernardo, N. Bond, Allen G. Gibbs
Undergraduate Research Opportunities Program (UROP)
Climate change is fundamentally connected to animal development and survival, and the life history of an organism must be coordinated with predictable seasonal changes of the environment. Climate change affects the life cycle of plants, a major food source for insects. If photoperiod, the primary environmental queue that insects utilize to determine the proper emergence time, and food availability becomes out of sync, many populations of insects and other animals could be threatened. Understanding animal development can provide insight into this issue and could provide clues that may help the scientific community predict how insect populations may respond to climate …
Protection Of Macrophages J774a.1 By Purine Nucleoside Analogues From Bacillus Anthracis Mediated Necrosis, Zadkiel R. Alvarez
Protection Of Macrophages J774a.1 By Purine Nucleoside Analogues From Bacillus Anthracis Mediated Necrosis, Zadkiel R. Alvarez
UNLV Theses, Dissertations, Professional Papers, and Capstones
Eight years after the lamentable anthrax attacks, major scientific effort continues to be done, in order to stop imminent acts of bioterrorism. Innovative ways of therapy against the anthrax disease are being investigated. B. anthracis, the etiological agent of the infection, has a dormant stage in its life cycle known as the endospore. When conditions become favorable spores germinate, transforming into vegetative bacteria. In inhalational anthrax, the most fatal manifestation of the disease, spores enter the organism through the respiratory track, and are phagocytosized by alveolar macrophages of the lungs. Spores are able to sense nutrient availability, activating their germination …
An Algorithm For Identifying Novel Targets Of Transcription Factor Families: Application To Hypoxia-Inducible Factor 1 Targets, Yue Jiang, Bojan Cukic, Donald A. Adjeroh, Heath D. Skinner, Jie Lin, Qingxi J. Shen, Bing-Hua Jiang
An Algorithm For Identifying Novel Targets Of Transcription Factor Families: Application To Hypoxia-Inducible Factor 1 Targets, Yue Jiang, Bojan Cukic, Donald A. Adjeroh, Heath D. Skinner, Jie Lin, Qingxi J. Shen, Bing-Hua Jiang
Electrical & Computer Engineering Faculty Research
Efficient and effective analysis of the growing genomic databases requires the development of adequate computational tools. We introduce a fast method based on the suffix tree data structure for predicting novel targets of hypoxia-inducible factor 1 (HIF-1) from huge genome databases. The suffix tree data structure has two powerful applications here: one is to extract unknown patterns from multiple strings/sequences in linear time; the other is to search multiple strings/sequences using multiple patterns in linear time. Using 15 known HIF-1 target gene sequences as a training set, we extracted 105 common patterns that all occur in the 15 training genes …