Digital Commons Network^™

Epithelial Neoplasia Coincides With Exacerbated Injury And Fibrotic Response In The Lungs Of Gprc5a-Knockout Mice Following Silica Exposure, Xiaofei Wang, Dongliang Xu, Yueling Liao, Shuangshuang Zhong, Hongyong Song, Beibei Sun, Binhua P. Zhou, Jiong Deng, Baohui Han

Markey Cancer Center Faculty Publications

Exposure to crystalline silica is suggested to increase the risk for a variety of lung diseases, including fibrosis and lung cancer. However, epidemiological evidences for the exposure-risk relationship are ambiguous and conflicting, and experimental study from a reliable animal model to explore the relationship is lacking. We reasoned that a mouse model that is sensitive to both lung injury and tumorigenesis would be appropriate to evaluate the exposure-risk relationship. Previously, we showed that, Gprc5a^-/- mice are susceptible to both lung tumorigenesis and endotoxin-induced acute lung injury. In this study, we investigated the biological consequences in Gprc5a^-/- mouse model …

The Patient Patient: The Importance Of Knowing Your Navigator, Sarah M. Wheeler Phd, Julie E. Gilbert Phd, Melissa Kaan Mba, Eric Klonikowski, Claire Mb Holloway Md Phd Frcsc

Patient Experience Journal

In Ontario, Diagnostic Assessment Programs (DAPs) have been implemented to improve the quality of care patients receive during the diagnostic phase of the cancer journey. Patient navigators play a critical role in this model by coordinating care and providing information and support to patients and their families. The objectives of this study were 1) to determine whether patient navigation in DAPs is associated with a better patient experience and 2) to examine whether patient navigation in DAPs modifies the effect of wait times and patient volumes on patient experience. Data reflecting patients’ experience within the DAP were collected via survey …

The Role Of Radiation Therapy On Medically Inoperable Clinically Localized Non-Small Cell Lung Patients: London Regional Cancer Program (Lrcp) Clinical Experience, Michael Lee, Edward Yu, Robert Ash, Patricia Tai, Larry Stitt, George Rodrigues, Rashid Dar, Mark Vincent, Richard Inculet, Richard Malthaner

Richard A. Malthaner

Lung cancer is the most frequent cause of cancer death in both men and women in North America. In 2006, an estimated 22,700 Canadians will be diagnosed with lung cancer and 19,300 will die of it (Canadian Cancer Statistics 2006). Approximately 15-20% of NSCLC patients present with early or localized disease. Surgical resection of T1-2N0 NSCLC remains the treatment of choice for this population, and results in a 5-year survival rate of 50-70%. Patients deemed medically inoperable have been treated with non-surgical therapies, such as radiation therapy(RT), while some patients have simply been observed without any tumor therapy because of …

The Role Of Radiation Therapy On Medically Inoperable Clinically Localized Non-Small Cell Lung Patients: London Regional Cancer Program (Lrcp) Clinical Experience, Michael Lee, Edward Yu, Robert Ash, Patricia Tai, Larry Stitt, George Rodrigues, Rashid Dar, Mark Vincent, Richard Inculet, Richard Malthaner

Richard A. Malthaner

Lung cancer is the most frequent cause of cancer death in both men and women in North America. In 2006, an estimated 22,700 Canadians will be diagnosed with lung cancer and 19,300 will die of it (Canadian Cancer Statistics 2006). Approximately 15-20% of NSCLC patients present with early or localized disease. Surgical resection of T1-2N0 NSCLC remains the treatment of choice for this population, and results in a 5-year survival rate of 50-70%. Patients deemed medically inoperable have been treated with non-surgical therapies, such as radiation therapy(RT), while some patients have simply been observed without any tumor therapy because of …

Effects Of Low-Dose Gamma Radiation In A Murine Model Of Benzo[A]Pyrene-Induced Lung Cancer, Veronica Bruce

Biomedical Sciences ETDs

Lung cancer is the leading cause of cancer related mortality in the United States and in the world. One of the carcinogenic compounds found in cigarette smoke, Benzo[a]pyrene (B[a]P), at high levels elicits a number of inflammatory events consistent with those found in lung cancer patients. In our studies, the effects of low-dose gamma radiation (LDR) on carcinogenesis and tumor progression in a murine model of B[a]P-induced lung cancer were investigated. Two studies (46 weeks in duration) were conducted to assess the effects of fractionated doses of low-dose gamma rays on whole body irradiated A/J mice either before or following …

Slides: Urban Water Reliability And The Salton Sea: Can We Have Both?, Michael Cohen

Innovations in Managing Western Water: New Approaches for Balancing Environmental, Social and Economic Outcomes (Martz Summer Conference, June 11-12)

Presenter: Michael Cohen, Senior Research Associate, Pacific Institute

29 slides

Microrna-200 Regulates Ecm-Dependent Β1-Integrin/Fak Signaling And Cancer Cell Invasion, Christin Ungewiss

Dissertations & Theses (Open Access)

The microRNA-200 family is known to be a master regulator of the epithelial-to-mesenchymal transition, partially through its double-negative feedback loop with the transcriptional repressor Zeb1, yet the mechanisms on how miR-200 controls the invasive phenotype are not fully understood. Recent studies have shown that the miR-200/Zeb1 axis regulates cell-cell and cell-matrix interactions, but it has also been demonstrated that cell-intrinsic changes are insufficient to drive cancer cell invasion, leading us to focus on specific cell-matrix interactions required to activate tumor cell invasion and metastases. We have shown through 3D studies that the Integrin β1-collagen I contact is critical in mediating …

Cancer Stem Cells In Recurrent And Drug-Resistant Lung Cancers, Raagini Suresh, Shadan Ali, Aamir Ahmad, Philip Philip, Fazlul Sarkar

Honors College Theses

With a 5-year survival rate of less than 20%, lung cancer is a leading cause of cancer-related deaths worldwide. Considering the treatments currently in place, this statistic is frankly shocking. A possible explanation for the disconnect between sophisticated treatments and the survival rate can be found in the Cancer Stem Cell (CSC) hypothesis. The CSC hypothesis suggests the idea of a subpopulation of tumor cells with the abilities of self-renewal, cancer initiation, and further maintenance of tumors. Lung CSCs have been associated with resistance to radiation and chemotherapeutic treatments. CSCs have also been implicated in recurrent cancers; …

Microrna-223 Delivered By Platelet-Derived Microvesicles Promotes Lung Cancer Cell Invasion Via Targeting Tumor Suppressor Epb41l3, Hongwei Liang, Xin Yan, Yi Pan, Yongsheng Wang, Nan Wang, Limin Li, Yuan Liu, Xi Chen, Chen-Yu Zhang, Hongwei Gu, Ke Zen

Biology Faculty Publications

Background: Patients with hematogenous metastatic lung cancer displayed significantly increased platelet count and aggregation compared to lung cancer patients without hematogenous metastasis. The mechanism underlying the correlation between the lung cancer hematogenous metastasis and platelet activation remains unknown. Results: In the present study, we explored the role of microRNA-223 (miR-223) derived from platelets in modulating lung cancer cell invasion. Our results demonstrated that platelets from NSCLC patients contain higher level of miR-223 than that from healthy subjects. The concentration of miR-223 in the platelet-secreted microvesicles (P-MVs) from NSCLC patients was also increased compared to that from healthy subjects. Incubation of …

A Proposed Framework For Consensus-Based Lung Tumour Volume Auto-Segmentation In 4d Computed Tomography Imaging., Spencer Martin, Mark Brophy, David Palma, Alexander V Louie, Edward Yu, Brian Yaremko, Belal Ahmad, John L Barron, Steven S Beauchemin, George Rodrigues, Stewart Gaede

Medical Biophysics Publications

This work aims to propose and validate a framework for tumour volume auto-segmentation based on ground-truth estimates derived from multi-physician input contours to expedite 4D-CT based lung tumour volume delineation. 4D-CT datasets of ten non-small cell lung cancer (NSCLC) patients were manually segmented by 6 physicians. Multi-expert ground truth (GT) estimates were constructed using the STAPLE algorithm for the gross tumour volume (GTV) on all respiratory phases. Next, using a deformable model-based method, multi-expert GT on each individual phase of the 4D-CT dataset was propagated to all other phases providing auto-segmented GTVs and motion encompassing internal gross target volumes (IGTVs) …

Explore The Relationship Among Lung Cancer Stigma, Social Support, And Psychosocial Distress, Lisa Maggio

Theses and Dissertations--Nursing

There is longstanding causal relationship between cigarette smoking and lung cancer. Smoke-free policies and anti-smoking campaigns have been linked to the decline in smoking acceptance and contribute to the unintended consequence of stigmatizing smokers. Lung cancer is viewed as a self-inflicted disease and patients’ feel judged in a manner different from other cancers affecting social interactions between family, friends, and healthcare professionals. Lung cancer stigma contributes to depression, anxiety, poor self-esteem, guilt, shame, blame, threatens a person’s social identity, and limits social support that deeply affects patients and their support persons.

This dissertation contains a review of the literature related …

Apoptotic Effect Of Cordycepin On A549 Human Lung Cancer Cell Line, Hardeep Singh Tuli, Gaurav Kumar, Sardul Singh Sandhu, Anil Kumar Sharma, Dharmbir Kashyap

Turkish Journal of Biology

Cordycepin, an active ingredient in the insect fungus Cordyceps militaris, is in a category of compounds that exhibit significant therapeutic activity. The aim of the present study was to investigate the effect of cordycepin on cell proliferation, apoptosis, and cell cycle in A549 human lung cancer cells. MTT assay was used to evaluate the cytotoxic effect of cordycepin on A549 cell growth. Apoptotic effect was observed using cell morphology, DAPI staining, and DNA fragmentation studies. Flow cytometry (FCM) analysis was used to analyze cell cycle status after cordycepin treatment. Furthermore, apoptosis was assayed using annexin V-Alexa Fluor 488. Results of …

Indoor Air Quality, Angelia Mickle

Nursing Faculty Publications

Poor indoor air quality kills more than 4 million people around the world, and disables millions more with chronic illnesses such as COPD, cardiovascular disease, stroke, and lung cancer, according to the World Health Organization.

Psychological Wellness And Health-Related Stigma: A Pilot Study Of An Acceptance-Focused Cognitive Behavioural Intervention For People With Lung Cancer, Suzanne K. Chambers, B A. Morris, S Clutton, E Foley, L Giles, P Schofield, D O'Connell, J Dunn

Research outputs 2014 to 2021

People with lung cancer experience health-related stigma that is related to poorer psychosocial and quality of life outcomes. The present Phase 1 study applied mixed methods to test the acceptability of an acceptance-focused cognitive behavioural intervention targeting stigma for this patient group. Fourteen lung cancer patients completed a 6-week Psychological Wellness intervention with pre- and post-test outcome measures of psychological and cancer-specific distress, depression, health-related stigma and quality of life. In-depth interviews applying interpretative phenomenological analysis assessed participants' experiences of the intervention. Moderate to large improvements were observed in psychological (ηp 2=0.182) and cancer-specific distress (ηp 2=0.056); depression (ηp 2=0.621); …

Inhibition Of Shp2 Suppresses Mutant Egfr-Induced Lung Tumors In Transgenic Mouse Model Of Lung Adenocarcinoma, Valentina E. Schneeberger, Yuan Ren, Noreen Luetteke, Qingling Huang, Liwei Chen, Harshani R. Lawrence, Nicholas J. Lawrence, Eric B. Haura, John M. Koomen, Domenico Coppola, Jie Wu

Molecular Biosciences Faculty Publications

Epidermal growth factor receptor (EGFR) mutants drive lung tumorigenesis and are targeted for therapy. However, resistance to EGFR inhibitors has been observed, in which the mutant EGFR remains active. Thus, it is important to uncover mediators of EGFR mutant-driven lung tumors to develop new treatment strategies. The protein tyrosine phosphatase (PTP) Shp2 mediates EGF signaling. Nevertheless, it is unclear if Shp2 is activated by oncogenic EGFR mutants in lung carcinoma or if inhibiting the Shp2 PTP activity can suppress EGFR mutant-induced lung adenocarcinoma. Here, we generated transgenic mice containing a doxycycline (Dox)-inducible PTP-defective Shp2 mutant (tetO-Shp2CSDA). Using the rat Clara …

Hspa12b: A Novel Facilitator Of Lung Tumor Growth, He Ma, Ting Lu, Xiaojin Zhang, Chuanfu Li, Jingwei Xiong, Lei Huang, Ping Liu, Yuehua Li, Li Liu, Zhengnian Ding

ETSU Faculty Works

Lung tumor progression is regulated by proangiogenic factors. Heat shock protein A12B (HSPA12B) is a recently identified regulator of expression of proangiogenic factors. However, whether HSPA12B plays a role in lung tumor growth is unknown. To address this question, transgenic mice overexpressing HSPA12B (Tg) and wildtype littermates (WT) were implanted with Lewis lung cancer cells to induce lung tumorigenesis. Tg mice showed significantly higher number and bigger size of tumors than WT mice. Tg tumors exhibited increased angiogenesis and proliferation while reduced apoptosis compared with WT tumors. Interestingly, a significantly enhanced upregulation of Cox-2 was detected in Tg tumors than …

Soy Isoflavones Mediate Radioprotection Of Normal Lung Tissue By Modulating The Radiation-Induced Inflammatory Response, Lisa Marie Abernathy

Wayne State University Dissertations

Radiation-induced lung injury (RILI) is caused by an early inflammatory process triggered by damage to lung parenchyma, epithelial cells, vascular endothelial cells and stroma. Initially, oxidative injuries after radiation induce altered expression of pro-inflammatory cytokines. Infiltrating inflammatory cells are stimulated and activated, producing additional mediators, resulting in a cytokine cascade. The expansion and perpetual activation of inflammatory cells, as well as lung parenchyma, lead to clinical pneumonitis. Activated cells produce molecular mediators and growth factors that affect the proliferation and gene expression of lung fibroblasts. This process leads to increased collagen synthesis and deposition, eventually leading to the development of …

Inhalable Nanocomposites And Anticancer Agents For Cancer Therapy, Nathanael A. Stocke

Theses and Dissertations--Chemical and Materials Engineering

Cancer is designated as the leading cause of mortality worldwide and lung cancer is responsible for nearly 30% of all cancer related deaths. Over the last few decades mortality rates have only marginally increased and rates of recurrence remain high. These factors, among others, suggest the need for more innovative treatment modalities in lung cancer therapy. Targeted pulmonary delivery is well established for treating pulmonary diseases such as asthma and provides a promising platform for lung cancer therapy. Increasing local deposition of anticancer agents (ACAs) and reducing systemic exposure of these toxic moieties could lead to better therapeutic outcomes and …

Method Development For The Identification Of Alternatively Sialylated Glycoproteins In Non-Small Cell Lung Cancer, Stephen Matthew Roper

MUSC Theses and Dissertations

Non-small cell lung cancer represents 85% of all lung cancers with an average 5 year life expectancy of 15-20%. A wealth of data suggests that altered glycosylation contributes to the progression of these tumors and efforts to improve the specificity of biomarkers have logically shifted towards glycoproteomic investigations. For this purpose, recent innovations in experimental strategies and analytical techniques could be combined to provide a more detailed characterization of glycans than previously achievable. These new methods have not yet been assessed for feasibility in experimental procedures useful for discovery phase efforts. Therefore, we aimed to investigate the utility of novel …

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 …

Primary Cilia Mechanotransduction And Microtubule Stability In Mechanically Stretched Lung Adenocarcinoma Cells, Monika Rassi Radhika

Theses and Dissertations

The objective of this study is to investigate the role of microtubule based organelle, the primary cilia in lung adenocarcinoma by i) Quantifying the presence of primary cilia in several Non Small Cell Lung Cancer (NSCLC) cell lines in response to mechanical stimuli, ii) Attempting to determine the role of primary cilia in cell migration, iii) Investigating the effects of Paclitaxel(Taxol) resistance in lung cancer cells, iv) Analyzing the response of lung cancer cells to Smoothened Inhibitors and v) Determining the effects of Transforming Growth Factor Beta-1(TGF-β1) induced Epithelial to Mesenchymal Transition(EMT) in lung cancer cells. To ascertain the effects …