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Articles 31 - 43 of 43
Full-Text Articles in Cancer Biology
Paracrine Regulation Of Melanocyte Genomic Stability: A Focus On Nucleotide Excision Repair, Stuart Gordon Jarrett, Katharine Marie Carter, John August D'Orazio
Paracrine Regulation Of Melanocyte Genomic Stability: A Focus On Nucleotide Excision Repair, Stuart Gordon Jarrett, Katharine Marie Carter, John August D'Orazio
Markey Cancer Center Faculty Publications
UV radiation is a major environmental risk factor for the development of melanoma by causing DNA damage and mutations. Resistance to UV damage is largely determined by the capacity of melanocytes to respond to UV injury by repairing mutagenic photolesions. The nucleotide excision repair (NER) pathway is the major mechanism by which cells correct UV photodamage. This multistep process involves the basic steps of damage recognition, isolation, localized strand unwinding, assembly of a repair complex, excision of the damage‐containing strand 3′ and 5′ to the photolesion, synthesis of a sequence‐appropriate replacement strand, and finally ligation to restore continuity of genomic …
The Soy-Derived Peptide Lunasin Inhibits Invasive Potential Of Melanoma Initiating Cells, Chris Shidal, Jun-Ichi Inaba, Kavitha Yaddanapudi, Keith R. Davis
The Soy-Derived Peptide Lunasin Inhibits Invasive Potential Of Melanoma Initiating Cells, Chris Shidal, Jun-Ichi Inaba, Kavitha Yaddanapudi, Keith R. Davis
Plant Pathology Faculty Publications
Lunasin is a 44 amino acid peptide with multiple functional domains including an aspartic acid tail, an RGD domain, and a chromatin-binding helical domain. We recently showed that Lunasin induced a phenotype switch of cancer initiating cells (CIC) out of the stem compartment by inducing melanocyte-associated differentiation markers while simultaneously reducing stem-cell-associated transcription factors. In the present study, we advance the hypothesis that Lunasin can reduce pools of melanoma cells with stem cell-like properties, and demonstrate that Lunasin treatment effectively inhibits the invasive potential of CICs in vitro as well as in vivo in a mouse experimental metastasis model. Mice …
Melanocortin 1 Receptor: Structure, Function, And Regulation, Erin M. Wolf Horrell, Mary C. Boulanger, John A. D'Orazio
Melanocortin 1 Receptor: Structure, Function, And Regulation, Erin M. Wolf Horrell, Mary C. Boulanger, John A. D'Orazio
Physiology Faculty Publications
The melanocortin 1 receptor (MC1R) is a melanocytic Gs protein coupled receptor that regulates skin pigmentation, UV responses, and melanoma risk. It is a highly polymorphic gene, and loss of function correlates with a fair, UV-sensitive, and melanoma-prone phenotype due to defective epidermal melanization and sub-optimal DNA repair. MC1R signaling, achieved through adenylyl cyclase activation and generation of the second messenger cAMP, is hormonally controlled by the positive agonist melanocortin, the negative agonist agouti signaling protein, and the neutral antagonist β-defensin 3. Activation of cAMP signaling up-regulates melanin production and deposition in the epidermis which functions to limit UV …
The Association Between The Il-1 Pathway, Isaac C. Wun
The Association Between The Il-1 Pathway, Isaac C. Wun
Dissertations and Theses (Open Access)
Cutaneous malignant melanoma (CMM) is a potentially lethal malignancy that warrants attention and further research, as it is known to that there is an increasing rate of incidence in theUnited States, and it is also known that exposure to UV light is its most crucial risk factor, and family history of melanoma is also an important risk factor. Melanoma is an aggressive and lethal cancer in humans. There are an estimated new 132,000 melanoma cases annually worldwide, and the trend has doubled in the past 20 years. However, attempts to treat melanoma have encountered considerable resistance and remained ineffective. The …
Galectin-3 Enhances The Malignant Melanoma Phenotype By Regulating Autotaxin, Russell R. Braeuer
Galectin-3 Enhances The Malignant Melanoma Phenotype By Regulating Autotaxin, Russell R. Braeuer
Dissertations and Theses (Open Access)
In melanoma patient specimens and cell lines, the over expression of galectin-3 is associated with disease progression and metastatic potential. Herein, we have sought out to determine whether galectin-3 affects the malignant melanoma phenotype by regulating downstream target genes. To that end, galectin-3 was stably silenced by utilizing the lentivirus-incorporated small hairpin RNA in two metastatic melanoma cell lines, WM2664 and A375SM, and subjected to gene expression microarray analysis. We identified and validated the lysophospholipase D enzyme, autotaxin, a promoter of migration, invasion, and tumorigenesis, to be down regulated after silencing galectin-3. Silencing galectin-3 significantly reduced the promoter activity of …
Characterization Of Differentiation And Prognostic Biomarkers On Cd8+ Tumor-Infiltrating Lymphocytes In Metastatic Melanoma, Richard C. Wu
Characterization Of Differentiation And Prognostic Biomarkers On Cd8+ Tumor-Infiltrating Lymphocytes In Metastatic Melanoma, Richard C. Wu
Dissertations and Theses (Open Access)
CD8+ cytotoxic T lymphocytes (CTL) frequently infiltrate tumors, yet most melanoma patients fail to undergo tumor regression. We studied the differentiation of the CD8+ tumor-infiltrating lymphocytes (TIL) from 44 metastatic melanoma patients using known T-cell differentiation markers. We also compared CD8+ TIL against the T cells from matched melanoma patients’ peripheral blood. We discovered a novel subset of CD8+ TIL co-expressing early-differentiation markers, CD27, CD28, and a late/senescent CTL differentiation marker, CD57. This CD8+CD57+ TIL expressed a cytolytic enzyme, granzyme B (GB), yet did not express another cytolytic pore-forming molecule, perforin (Perf). In …
Nanosecond Pulsed Electric Field (Nspef) Ablation As An Alternative Or Adjunct To Surgery For Treatment Of Cancer, Ru Chen, Xinhua Chen, Stephen J. Beebe
Nanosecond Pulsed Electric Field (Nspef) Ablation As An Alternative Or Adjunct To Surgery For Treatment Of Cancer, Ru Chen, Xinhua Chen, Stephen J. Beebe
Bioelectrics Publications
Surgery as resection or transplantation remains a fundamental means for cancer treatment and often offers an opportunity for a cure. However, surgery is not always possible because of tumor proximity to blood vessels or ducts or when a patient is not healthy enough to undergo surgery. Application of nanosecond pulsed electric fields (nsPEFs) is a new approach to treat cancer using pulse power technology that was originally designed for military purposes. This novel approach deposits extremely short pulses of high power, low energy electric fields into malignant tissues using electrodes to encompass tumors. Pre-clinical studies show that treatments are effective …
Molecular Mechanisms By Which C-Abl And Arg Mediate Melanoma Invasion And Metastasis, Sourik S. Ganguly
Molecular Mechanisms By Which C-Abl And Arg Mediate Melanoma Invasion And Metastasis, Sourik S. Ganguly
Theses and Dissertations--Pharmacology and Nutritional Sciences
Metastasis is one of the main causes of death in cancer patients. Metastatic melanoma is a death sentence, as chemotherapeutic agents have a 5% success rate or do not extend survival beyond 10 months. The lack of effective chemotherapeutic agents for treating metastatic melanoma indicates a dire need to identify new drug targets and develop new therapies. Our lab has previously shown that the kinase activity of Abelson family of non-receptor tyrosine kinases (c-Abl and Arg) is elevated in invasive breast cancer cell lines as compared to non-invasive cell lines. Previous studies from our lab have shown that Abl …
Applications For Pulse Power Using Nanosecond Pulsed Electric Fields (Nspefs) In Cell Biology And Cancer Treatment, Stephen J. Beebe
Applications For Pulse Power Using Nanosecond Pulsed Electric Fields (Nspefs) In Cell Biology And Cancer Treatment, Stephen J. Beebe
Bioelectrics Publications
No abstract provided.
Comparative Study Of Long-And Short-Pulsed Electric Fields For Treating Melanoma In An In Vivo Mouse Model, Xinhua Chen, Xinmei Chen, Karl H. Schoenbach, Shusen Zheng, R. James Swanson
Comparative Study Of Long-And Short-Pulsed Electric Fields For Treating Melanoma In An In Vivo Mouse Model, Xinhua Chen, Xinmei Chen, Karl H. Schoenbach, Shusen Zheng, R. James Swanson
Bioelectrics Publications
A mouse melanoma model was set up with green fluorescent protein (GFP) expression in vivo. With the same energy, long- (1 ms) and short- (300 ns) pulsed electric fields were delivered to two melanomas injected into the same mouse. The tumor growth and green fluorescence were followed up to compare the different treatment efficacy of long and short pulses. After two days post treatment, short pulse-treated tumors showed a significantly lower tumor volume compared with long pulse-treated tumors (n=8, p
Mcam/Muc18 Regulates Melanoma Progression By Modulating The Expression Of Id-1, Maya Zigler
Mcam/Muc18 Regulates Melanoma Progression By Modulating The Expression Of Id-1, Maya Zigler
Dissertations and Theses (Open Access)
The acquisition of the metastatic melanoma phenotype is associated with increased expression of the melanoma cell adhesion molecule MCAM/MUC18 (CD146). However, the mechanism by which MUC18 contributes to melanoma metastasis remains unclear. Herein, we stably silenced MUC18 expression utilizing lentivirus-incorporated small hairpin RNA, in two metastatic melanoma cell lines, A375SM and C8161, and conducted cDNA microarray analysis. We identified and validated that the transcriptional regulator, Inhibitor of DNA Binding-1 (Id-1), previously shown to function as an oncogene in several malignancies, was downregulated by 5.6-fold following MUC18 silencing. Additionally, we found that MUC18 regulated Id-1 expression at the transcriptional level via …
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, …
Evidence For The Elevation Of Serum Carcinoembryonic Antigen And Tumor-Associated Glycoprotein-72 Levels In Patients Administered Interferons, John Greiner, Fiorella Guadagni, David Goldstein, Ernest Borden, Roy Ritts, Patricia Witt, Albert Lobuglio, Mansoor Saleh, Jeffrey Schlom
Evidence For The Elevation Of Serum Carcinoembryonic Antigen And Tumor-Associated Glycoprotein-72 Levels In Patients Administered Interferons, John Greiner, Fiorella Guadagni, David Goldstein, Ernest Borden, Roy Ritts, Patricia Witt, Albert Lobuglio, Mansoor Saleh, Jeffrey Schlom
Haematology and Oncology, East Africa
Sera were collected from 111 patients diagnosed with adenocarcinoma or nonadenocarcinoma malignancies who received different schedules of interferon (IFN)-γ or IFN-βser alone or in combination. Serum carcinoembryonic antigen (CEA) and tumor-associated glycoprotein-72 (TAG-72) antigen levels were measured to determine whether interferon could enhance the tumor shedding and, thereby, the serum level of either tumor antigen. Less than 10% of the sera samples from patients diagnosed with nonadenocarcinoma malignancies (e.g., hairy cell leukemia, melanoma) had positive titers of TAG-72 or CEA, and interferon neither increased nor resulted in the appearance of either tumor antigen in those sera. In contrast, 59.2% and …