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Articles 31 - 42 of 42
Full-Text Articles in Cell Biology
Iron Alters Cell Survival In A Mitochondria-Dependent Pathway In Ovarian Cancer Cells., Edward Haller
Iron Alters Cell Survival In A Mitochondria-Dependent Pathway In Ovarian Cancer Cells., Edward Haller
Edward Haller
ABSTRACT The role of iron in the development of cancer remains unclear. We previously reported that iron reduces cell survival in a Ras/mitogen-activated protein kinase (MAPK)-dependent manner in ovarian cells; however, the underlying downstream pathway leading to reduced survival was unclear. Although levels of intracellular iron, ferritin/CD71 protein and reactive oxygen species did not correlate with iron-induced cell survival changes, we identified mitochondrial damage (via TEM) and reduced expression of outer mitochondrial membrane proteins (translocase of outer membrane: TOM20 and TOM70) in cell lines sensitive to iron. Interestingly, Ru360 (an inhibitor of the mitochondrial calcium uniporter) reversed mitochondrial changes and …
Targeting Cell Cycle Proteins In Breast Cancer Cells With Sirna By Using Lipid-Substituted Polyethylenimines, Manoj Parmar, Hamidreza Montazeri Aliabadi, Parvin Mahdipoor, Cezary Kucharski, Robert Maranchuk, Judith C. Hugh, Hasan Uludag
Targeting Cell Cycle Proteins In Breast Cancer Cells With Sirna By Using Lipid-Substituted Polyethylenimines, Manoj Parmar, Hamidreza Montazeri Aliabadi, Parvin Mahdipoor, Cezary Kucharski, Robert Maranchuk, Judith C. Hugh, Hasan Uludag
Pharmacy Faculty Articles and Research
The cell cycle proteins are key regulators of cell cycle progression whose de-regulation is one of the causes of breast cancer. RNA interference (RNAi) is an endogenous mechanism to regulate gene expression and it could serve as the basis of regulating aberrant proteins including cell cycle proteins. Since the delivery of small interfering RNA (siRNA) is a main barrier for implementation of RNAi therapy, we explored the potential of a non-viral delivery system, 2.0 kDa polyethylenimines substituted with linoleic acid and caprylic acid, for this purpose. Using a library of siRNAs against cell cycle proteins, we identified cell division cycle …
Expression And Regulatory Effects On Cancer Cell Behavior Of Nell1 And Nell2 In Human Renal Cell Carcinoma, Ritsuko Nakamura, Takeru Oyama, Ryosuke Tajiri, Atsushi Mizokami, Mikiko Namiki, Masaru Nakamoto, Akishi Ooi
Expression And Regulatory Effects On Cancer Cell Behavior Of Nell1 And Nell2 In Human Renal Cell Carcinoma, Ritsuko Nakamura, Takeru Oyama, Ryosuke Tajiri, Atsushi Mizokami, Mikiko Namiki, Masaru Nakamoto, Akishi Ooi
Biology Faculty Publications
Neural epidermal growth factor-like like (NELL) 1 and 2 constitute a family of multimeric and multimodular extracellular glycoproteins. Although the osteogenic effects of NELL1 and functions of NELL2 in neural development have been reported, their expression and functions in cancer are largely unknown. In this study, we examined expression of NELL1 and NELL2 in renal cell carcinoma (RCC) using clinical specimens and cell lines. We show that, whereas NELL1 and NELL2 proteins are strongly expressed in renal tubules in non-cancerous areas of RCC specimens, their expression is significantly downregulated in cancerous areas. Silencing of NELL1 and NELL2 mRNA expression was …
Effect Of Adjuvant And Neoadjuvant Anti-Telomerase With Anthracycline Based Chemotherapy On Triple Negative Breast Cancer Cells, Luke T. Pardy
Effect Of Adjuvant And Neoadjuvant Anti-Telomerase With Anthracycline Based Chemotherapy On Triple Negative Breast Cancer Cells, Luke T. Pardy
Student Summer Scholars Manuscripts
Breast cancer is the second leading cause of cancer related death in women in the US. In addition, 20% of all breast cancer cases in the U.S. are from the subtype known as Triple-Negative Breast Cancer (TNBC), which is the most aggressive and invasive form of the disease. This type of breast cancer has the worst prognosis, a decreased survival rate, and no targeted therapy. Over the decades, interest in pre- (Neoadjuvant) and post- (Adjuvant) chemotherapy treatments, in the management of TNBC has increased. Therefore, we evaluated the Adjuvant and Neoadjuvant effects of anti-telomerases (BIBR 1532 and GV6) with anthracycline-based …
Regulation Of The Wnt/Β-Catenin Pathway By Steroid Hormones In Danio Rerio Ovarian Tissue, Macaulie Casey
Regulation Of The Wnt/Β-Catenin Pathway By Steroid Hormones In Danio Rerio Ovarian Tissue, Macaulie Casey
Summer Research
The Wnt/β-catenin signaling pathway regulates genes involved in proliferation (cell growth) and apoptosis (cell death). It has been implicated in ovarian cancer, where higher levels of β-catenin may be involved in the development of tumors. Steroid hormones play a significant role in female reproductive tissue, and studies have shown that estrogens and progestins may regulate the Wnt/β-catenin pathway. My past research suggested testosterone may also affect the pathway. Few studies have investigated how steroid hormone mimics, such as Bisphenol A (BPA), affect these regulatory patterns. This study investigated the affect of estrogen and BPA on the Wnt/β-catenin pathway in Danio …
Terahertz Imaging Platform To Characterize The Growth Of In-Vitro Breast Tumors, Scarlett-Marie Acklin
Terahertz Imaging Platform To Characterize The Growth Of In-Vitro Breast Tumors, Scarlett-Marie Acklin
Inquiry: The University of Arkansas Undergraduate Research Journal
This study aimed at evaluating the ideal plating method and density for imaging with the terahertz (THz) spectrometer. In this study, different methods were used to grow in-vitro tumors using the 4T1 cell line. Here, attempts to grow breast tumors in-vitro were conducted. Results were produced in two environments, flat-bottomed plates and round-bottomed multiwell plates. The second method allowed for faster clumping and increased cell aggregation, producing tumors up to 7mm. Terahertz spectroscopy produced images that correlated well to photomicrographs taken of the in-vitro tumors. This methodology shows great promise for providing a reliable, parameter-controlled source of in-vitro breast tumors …
The Significance Of Crispr/Cas9-Directed Cul3 Knockout On Human Colorectal Cancer Cells, Zoe A. Lautz
The Significance Of Crispr/Cas9-Directed Cul3 Knockout On Human Colorectal Cancer Cells, Zoe A. Lautz
Departmental Honors Projects
Cancer, the second leading cause of death in the US, is caused by mutations in select genes that alter cellular function leading to uncontrolled proliferation. Understanding the specific genes that drive cancer can lead to the generation of novel cancer therapies. To identify novel genes that drive cancer in the colon (CRC), lungs, and ovaries in mice, Starr et al. employed a transposon-based insertional mutagenesis system. One of the genes identified, APC, is mutated in 70-80% of human CRCs. CUL3, suspected to be a general driver gene, was discovered in the lung cancer screen. CUL3 was analyzed for its role …
The Role Of Brct-Containing Proteins Brca1 And Paxip1 In Cancer, Ankita Jhuraney
The Role Of Brct-Containing Proteins Brca1 And Paxip1 In Cancer, Ankita Jhuraney
USF Tampa Graduate Theses and Dissertations
Modular domains of proteins are important in cellular signaling processes. Eukaryotic cells are constantly undergoing DNA damage due to exogenous and endogenous sources of damage. The DNA damage response (DDR) involves a complex network of signaling events mediated by modular domains such as the BRCT (BRCA1 C-terminal) domains. Therefore, proteins containing BRCT domains are important for DNA damage detection and signaling. In this dissertation, we focus on two BRCT-containing proteins BRCA1 and PAXIP1. BRCA1 is a gene that is known to be associated with increased risk of hereditary breast and ovarian cancer. Germline variants of BRCA1 are assessed to determine …
Targeting T-Bet For Prevention Of Graft-Versus-Host Disease And Leukemia Relapse After Allogeneic Hematopoietic Stem Cell Transplantation, Jianing Fu
USF Tampa Graduate Theses and Dissertations
Allogeneic hematopoietic stem cell transplantation (allo-HSCT) is an effective therapeutic option for many malignant diseases. However, the efficacy of allo-HSCT is limited by the occurrence of destructive graft-versus-host disease (GVHD). Since allogeneic T cells are the driving force in the development of GVHD, their activation, proliferation, and differentiation are key factors to understanding GVHD pathogenesis. On the other hand, antigen-presenting cells (APCs) are essential for allogeneic T-cell priming and the development of GVHD. The T-box transcription factor T-bet is a master regulator for IFN-γ production and Th1 differentiation. T-bet also regulates the functions of APCs including dendritic cells (DCs) and …
Pemetrexed, A Modulator Of Amp-Activated Kinase Signaling And An Inhibitor Of Wild Type And Mutant P53, Stuti Agarwal
Pemetrexed, A Modulator Of Amp-Activated Kinase Signaling And An Inhibitor Of Wild Type And Mutant P53, Stuti Agarwal
Theses and Dissertations
New drug discoveries and new approaches towards diagnosis and treatment have improved cancer therapeutics remarkably. One of the most influential and effective discoveries in the field of cancer therapeutics was antimetabolites, such as the antifolates. The interest in antifolates increased as some of the antifolates showed responses in cancers, such as mesothelioma, leukemia, and breast cancers. When pemetrexed (PTX) was discovered, our laboratory had established that the primary mechanism of action of pemetrexed is to inhibit thymidylate 22 synthase (TS) (E. Taylor et al., 1992). Preclinical studies have shown that PTX has a broad range of antitumor activity in human …
Interaction Between Atm Kinase And P53 In Determining Glioma Radiosensitivity, Syed F. Ahmad
Interaction Between Atm Kinase And P53 In Determining Glioma Radiosensitivity, Syed F. Ahmad
Theses and Dissertations
Glioblastoma multiforme (GBM) is the most common primary brain tumor. Studies have shown that targeting the DNA damage response can sensitize cancer cells to DNA damaging agents. Ataxia telangiectasia mutated (ATM) is involved in signaling DNA double strand breaks. Our group has previously shown that ATM inhibitors (ATMi) sensitize GBM cells and tumors to ionizing radiation. This effect is greater when the tumor suppressor p53 is mutated.
The goals of this work include validation of a new ATM inhibitor, AZ32, and elucidation of how ATMi and p53 status interact to promote cell death after radiation. We propose that ATMi and …
Pharmacologic Induction Of The Melanocotin 1 Receptor (Mc1r) Pathway Provides Protection Against Sunburn And Enhances Expression Of Antioxidant Enzymes In The Skin, Alexandra Amaro-Ortiz
Pharmacologic Induction Of The Melanocotin 1 Receptor (Mc1r) Pathway Provides Protection Against Sunburn And Enhances Expression Of Antioxidant Enzymes In The Skin, Alexandra Amaro-Ortiz
Theses and Dissertations--Toxicology and Cancer Biology
The inability to tan properly after sun exposure strongly correlates with increased incidence of skin cancer. The melanocortin 1 receptor (MC1R) is a transmembrane Gs-coupled cell surface receptor found on epidermal melanocytes that transmits pro-survival and pro-differentiation signals mediated by the second messenger cAMP. Humans carrying loss-of-function polymorphisms in MC1R signaling exhibit higher incidences of skin cancers including melanoma.
This study focused on the physiologic effects of topical application of forskolin, an adenylate cyclase activator, in extension (Mc1re/e) K14-SCF animals, which model the fair-skinned UV-sensitive human. Twice daily application of the drug promoted accelerated pigmentation, increased skin darkening …