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Full-Text Articles in Life Sciences

Dynamic Assessment Of Nk Cell Interactions With Pediatric Tumor Cells To Predict Response To Immunotherapy, Arianexys Aquino Lopez Dec 2017

Dynamic Assessment Of Nk Cell Interactions With Pediatric Tumor Cells To Predict Response To Immunotherapy, Arianexys Aquino Lopez

Dissertations & Theses (Open Access)

Due to Natural Killer (NK) cells’ capacity to target tumor cells without prior sensitization, adoptive NK cell therapy represents a promising immunotherapy approach for pediatric cancer patients. Our laboratory has developed an NK cell expansion protocol that generates large quantities of NK cells for therapeutic infusion. Given that NK cells are heterogeneous, with variable receptor expression and potential to target tumor cells, the purpose of my study was to determine whether subpopulations of NK cells with enhanced anti-tumor potential could be identified for increased potency of the NK cell infusion product. In addition, we previously showed that our expanded NK …


Memory Potential, Molecular Characterization, And Translational Applications Of The Novel Theo/Tceo T Cell Phenotype, Todd Bartkowiak, Todd Bartkowiak Dec 2017

Memory Potential, Molecular Characterization, And Translational Applications Of The Novel Theo/Tceo T Cell Phenotype, Todd Bartkowiak, Todd Bartkowiak

Dissertations & Theses (Open Access)

T cells comprise a substantial arm of the immune system and are exquisitely adapted to combat pathogens and tumors. The inflammatory environment largely dictates the nature of T cell response. A hallmark of T cell-mediated immunity is formation of immunological memory; the ability to respond more potently to re-encounter with pathogens. The immune system is also capable of recognizing tumors as foreign, much like viral or bacterial pathogens. Tumors have evolved, though, to generate an immunosuppressive environment to avoid destruction. The field of immunotherapy seeks to overcome immune suppression, in part by targeting T cell co-receptors on the cell surface …


Defining The Ontogeny And Functions Of Macrophages In Pancreatic Ductal Adenocarcinoma, Yu Zhu May 2017

Defining The Ontogeny And Functions Of Macrophages In Pancreatic Ductal Adenocarcinoma, Yu Zhu

Arts & Sciences Electronic Theses and Dissertations

The immune system plays an essential role in protecting the host organisms against both foreign invaders and self-attacks arisen within the host, such as tumors. Instead of promoting the long-term fitness of the organism, the immune system is often suppressed or hijacked by tumor cells to accelerate the progression of malignancies. Among the key drivers of immune suppression, macrophages are one of the most abundant immune cells present in tumor tissues. High levels of macrophage infiltration in the malignant tissues correlate with negative patient outcome in many types of cancers, including pancreatic ductal adenocarcinoma (PDAC), one of the most lethal …


Role Of Modern Immunotherapy In Gastrointestinal Malignancies: A Review Of Current Clinical Progress, Zin W. Myint, Gaurav Goel Apr 2017

Role Of Modern Immunotherapy In Gastrointestinal Malignancies: A Review Of Current Clinical Progress, Zin W. Myint, Gaurav Goel

Markey Cancer Center Faculty Publications

Gastrointestinal (GI) cancers are a group of highly aggressive malignancies with a huge disease burden worldwide. There is clearly a significant unmet need for new drugs and therapies to further improve the treatment outcomes of GI malignancies. Immunotherapy is a novel treatment strategy that is emerging as an effective and promising treatment option against several types of cancers. CTLA-4 and PD-1 are critical immune checkpoint molecules that negatively regulate T cell activation via distinct mechanisms. Immune checkpoint blockade with antibodies directed against these pathways has already shown clinical efficacy that has led to their FDA approval in the treatment of …