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Articles 1 - 9 of 9
Full-Text Articles in Cancer Biology
Jag1 Role In The Extravasation Of Metastasized Tnbc Tumor Cells, Bhavya Vegesna '23
Jag1 Role In The Extravasation Of Metastasized Tnbc Tumor Cells, Bhavya Vegesna '23
Student Publications & Research
Breast cancer is the second leading cause of cancer death in women. Triple negative breast cancer (TNBC) is an aggressive subclass defined by its lack of hormonal receptors and HER2 amplification. Although TNBC only accounts for 15% of all invasive breast cancers, there are limited therapeutic options for patients with TNBC. Although breast cancer patients have a favorable prognosis if their tumor is detected early, patients with TNBC are prone to earlier recurrence and local/distant metastasis. Consequently, patients with metastatic TNBC have <15% relative 5-year survival rate. The development of metastasis in TNBC is a complex and poorly understood process that includes multiple steps such as genetic and epigenetic alterations, angiogenesis, epithelial-to-mesenchymal transition (EMT), intravasation, and extravasation. Expression of JAGGED-1 (JAG1), a Notch ligand, correlates with metastatic status and poor survival in clinical data. However, the exact mechanism in which JAG1 increases metastasis is unknown. We hypothesize that JAG1 increases metastasis by interacting with endothelial cells. In order to test this idea, we generated JAG1-knockout cells using CRISPR/Cas9 technologies and then modeled the extravasation of these cells compared to JAG1-positive cells. Specifically, we interrogated lung capillary extravasation after intravenous injection of TNBC cells. The lung was chosen due to the propensity of TNBC cells to invade the lung. Preliminary data demonstrates that JAG1 presented in tumor cells acts as a signaler to permit and promote extravasation and metastasis of the cancer cells. For further studies, the long term effects of tumor derived JAG1 will be studied to understand the consequences of JAG1 mediated extravasation on metastatic burden and survival.
Discovery Of An Egfr Inhibitor For The Treatment Of Lung And Other Cancers, Jodie Meng '20
Discovery Of An Egfr Inhibitor For The Treatment Of Lung And Other Cancers, Jodie Meng '20
Student Publications & Research
The Epidermal Growth Factor Receptor (EGFR), a transmembrane protein involved in the regulation of signaling pathways, is frequently overexpressed in epithelial tumors. First generation EGFR TKIs, such as erlotinib and gefitinib, traditionally improved outcomes for non-small-cell lung carcinoma and pancreatic cancer patients by attaching competitively and reversibly to the ATP binding domain of EGFR. Second-generation EGFR TKIs have been developed to combat resistance among patients, despite demonstrating toxic side effects. In the present study, 1400 selective inhibitors were designed based on the molecular scaffolds of first and second generation EGFR TKIs. Results were refined by parameters outlined in Lipinski’s rule. …
Classification Of Intensity-Modulated Proton Therapy Plans, Louise Gabrielle Lima '19, Alice Liu '19
Classification Of Intensity-Modulated Proton Therapy Plans, Louise Gabrielle Lima '19, Alice Liu '19
Student Publications & Research
Proton Radiotherapy
Proton radiotherapy is a form of radiation treatment that uses energized protons to break DNA, leading to cell death and killing cancers.
A Review Of The Signal Transduction Pathways Involved In Epithelial Mesenchymal Transition Induced In Breast Cancer Metastasis And Their Cross-Talks, Kasey Cervantes '17
A Review Of The Signal Transduction Pathways Involved In Epithelial Mesenchymal Transition Induced In Breast Cancer Metastasis And Their Cross-Talks, Kasey Cervantes '17
Independent Study
Epithelial-Mesenchymal Transition (EMT) is a biological process utilized by epithelial cells to transform into motile mesenchymal cells, initiating metastasis in cancer. EMT is also utilized during development and wound healing [10]. This process allows for cancerous cells to detach themselves from their primary tumor and invade normal tissue in preferred organ sites, forming secondary tumors called metastases. Metastasis is very important in the progression of cancer in patients as it the process responsible for the mortality of patients through the collection of metastases that effect vital organs like the brain, lung, or immune system. The most common metastases for malignant …
Molecular Mechanisms Of Squamous Cell Carcinoma Tumor Stem Cell Creation Via High Nitric Oxide (Hno) Adaptation, Niresh T. Kuganeswaran '16, Krishi Korrapati '17, Thomas Wan '16, Timothy Tamas, James A. Radosevich
Molecular Mechanisms Of Squamous Cell Carcinoma Tumor Stem Cell Creation Via High Nitric Oxide (Hno) Adaptation, Niresh T. Kuganeswaran '16, Krishi Korrapati '17, Thomas Wan '16, Timothy Tamas, James A. Radosevich
Student Publications & Research
Cancer relapse or recurrence is defined as the return of cancer or its signs/symptoms after a period of improvement. Surgery may not remove all cancer cells and leave behind a few which cannot be detected by scans or other tests. It is also possible that some tumor cells are resistant to chemotherapy or radiation. Although many cancer cells are killed by these treatments, there may exist a few which contain a different genetic makeup which allows them to survive. These hypermalignant cancer cells, or cancer stem cells (CSCs), have been associated with causing cancer relapse. It has also been predicted …
Role Of Pseudogenes In Cancer Stem Creation Via High Nitric Oxide (Hno) Adaptation, Krishi Korrapati '17, Niresh T. Kuganeswaran '16, Thomas Wan '16, Timothy Tamas, James A. Radosevich
Role Of Pseudogenes In Cancer Stem Creation Via High Nitric Oxide (Hno) Adaptation, Krishi Korrapati '17, Niresh T. Kuganeswaran '16, Thomas Wan '16, Timothy Tamas, James A. Radosevich
Student Publications & Research
Gene chip analysis of ten HNO adapted cell lines (Squamous cells: SCC-016, SCC-040, SCC-056, SCC-114, SCC-116; Adenocarcinomas: A549, BT20, Hs578, MCF7, and T47D) was carried out. Known pseudogenes were identified in each line, as well as their coding counterparts.
The adenocarcinoma cell lines had no up regulated pseudogenes, while they had the following down regulated pseudogenes: RP6-159A1.2, RP11-255N24.3, AC004490.1, LDHBP, RP11-572H4.2. The squamous cell carcinomas (SCCs) had the following up regulated pseudogenes: RPL37AP1, AC138972.1, RP11-641D5.1, AC005534.6, AC022431.1, RPL26P12, and they had these down regulated pseudogenes: RP6-159A1.2, RP11-255N24.3, RBMXP1, RP11-20O23.1, RP11-551G24.2. All cell lines adhered to the hypothesis that an increase …
Phthalates And Phthalate Alternatives: Effects On Proliferative And Estrogenic Target Genes In Ishikawa Cells, Ranjani Sundar '15, Ping Yin, Serdar E. Bulun
Phthalates And Phthalate Alternatives: Effects On Proliferative And Estrogenic Target Genes In Ishikawa Cells, Ranjani Sundar '15, Ping Yin, Serdar E. Bulun
Student Publications & Research
Phthalates are used as plasticizers in many of the products found in medical, household, and industrial applications. Much research has not been completed on the effects of these phthalates as potential endocrine disrupting chemicals (EDCs). As these chemicals are ingested, the mechanism by which they affect the reproductive system is largely unknown. The purpose of this study was to observe how 2 phthalates, Di-n-butyl phthalate (DBP) and Diisononyl phthalate (DINP), and 2 phthalate alternatives, Dioctyl terephthalate (DOTP) and BHT (butylated hydroxytoluene)affect uterine cells in comparison to a vehicle treatment and 17β-Estradiol treatment. Changes in expression of mRNA were observed using …
The Effect Of Small Molecule 390 On Cxcr4 Receptors, Selam B. Zenebe-Gete '14, Shruti R. Topudurti '14, Shum Andrew, Richard J. Miller
The Effect Of Small Molecule 390 On Cxcr4 Receptors, Selam B. Zenebe-Gete '14, Shruti R. Topudurti '14, Shum Andrew, Richard J. Miller
Student Publications & Research
CXCR4 is the chemokine receptor which aids in chemotaxis of stem cells, such as those in the bone marrow or the brain. SDF-1 is the natural ligand for the CXCR4 receptor. Similarities between novel molecule 390 synthesized by the Miller Lab and SDF-1 make this novel small molecule a possible agonist of the CXCR4 receptor. To determine whether 390 is an agonist to the CXCR4 receptor, we transfected cells with CXCR4 and exposed them to no agonist [vehicle control], SDF-1, or varying concentrations of our agonist drug. Next, we took calcium images using the dye fura-2, which indicates changes in …
Stem Cell Biology And Strategies For Therapeutic Development In Degenerative Diseases And Cancer, Angel A. Alvarez '98
Stem Cell Biology And Strategies For Therapeutic Development In Degenerative Diseases And Cancer, Angel A. Alvarez '98
Doctoral Dissertations
Stem cell biology is an exciting field that will lead to significant advancements in science and medicine. We hypothesize that inducing the expression of stem cell genes, using the embryonic stem cell gene nanog, will reprogram cells and dedifferentiate human mesenchymal stem cells into pluripotent stem cells capable of neural differentiation. The aims of initial studies are as follows:
Aim 1: Demonstrate that forced expression of the embryonic stem cell gene nanog induces changes in human mesenchymal stem cells to an embryonic stem cell-like phenotype.
Aim 2: Demonstrate that induced expression of nanog up-regulates the expression of multiple embryonic stem …