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University of Texas Rio Grande Valley

Theses and Dissertations

Pancreatic cancer

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Influence Of Glucose And Lactic Acid On Macrophage Transition In Pancreatic Tumors, Anyssa A. Rodriguez Dec 2022

Influence Of Glucose And Lactic Acid On Macrophage Transition In Pancreatic Tumors, Anyssa A. Rodriguez

Theses and Dissertations

Pancreatic cancer is the seventh leading cause of cancer-related mortality worldwide. According to the American Cancer Society, it is the eleventh most common cancer diagnosed in both men and women in the United States. Pancreatic ductal adenocarcinoma (PDAC) comprises 90% of all pancreatic malignancies and is associated with poor clinical outcome because of late diagnosis and resistance to therapy. In addition, studies show that the tumor microenvironment has become an emerging interest in cancer research due to its complex components and unique characteristics that aid in cancer initiation, maintenance, and progression. Accumulating evidence signifies that tumor associated macrophages (TAMs) play …


Targeting Ribosome Biogenesis For Pancreatic Cancer Treatment, Carlos Perez Iii Jul 2022

Targeting Ribosome Biogenesis For Pancreatic Cancer Treatment, Carlos Perez Iii

Theses and Dissertations

Pancreatic cancer (PanCa) is one of the leading causes of cancer-related death in the United States. Currently, PanCa is one of the recalcitrant cancers that has very limited therapeutic options available for its treatment. The current standard care of PanCa is gemcitabine (GEM) alone or in combination with FOLFIRINOX, nab-paclitaxel, erlotinib, or 5-FU PanCa, which often show poor response. Therefore, new treatment strategies are required for the prevention and treatment of cancer. Ribosome biogenesis process is dysregulated in most of the cancer types of results in production of more ribosomes and synthesis of oncoproteins which lead to the induction, progression, …


Influence Of Paclitaxel Nanomedicine On The Pancreatic Tumor Immune Components, Godwin Peasah-Darkwah Jul 2022

Influence Of Paclitaxel Nanomedicine On The Pancreatic Tumor Immune Components, Godwin Peasah-Darkwah

Theses and Dissertations

Pancreatic cancer (PanCa) is one of the leading causes of cancer-related mortalities in the U.S due to ineffective therapeutic options. Pancreatic tumors are highly desmoplastic and inhibit efficient uptake of therapeutic payloads. Paclitaxel (PTX) has been tested in PanCa therapy with marginally better clinical outcomes, but remain limited by its poor hemocompatibility, biodistribution and intracellular accumulation in tumor cells. Thus, we synthesized a next generation nanoparticle system for PTX to improve its pharmacokinetics and pharmacodynamics (PKPD) in treating PanCa. We also examined ability of the nano formulation to potentiate gemcitabine (GEM) activity in combating chemoresistance in the pancreatic tumor microenvironment …


Development Of A Novel Strategy To Improve Checkpoint Immune Response In Pancreatic Cancer, Poornima Devi Shaji Dec 2021

Development Of A Novel Strategy To Improve Checkpoint Immune Response In Pancreatic Cancer, Poornima Devi Shaji

Theses and Dissertations

Pancreatic Cancer is the 3rd lethal causing cancers in United States with a survival rate less than 5-7%. In advanced unresectable pancreatic cancer, treatment options are restrained to surgery because of its extreme aggressiveness. Immunotherapy, one of the current advanced treatments has shown promising response in other cancers. However, this therapy is limited in pancreatic cancer due to desmoplasia and fibrotic tumor microenvironment (TME).

Our superparamagnetic iron oxide nanoparticles (SPIONS) of curcumin (Curcuma longa, principal curcuminoid of turmeric) have potential ability to inhibit desmoplasia and tumor stroma with an increased bioavailability. This would soften up the tumors for …