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Apoptosis

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Articles 1 - 30 of 79

Full-Text Articles in Cancer Biology

Cell Cycle Inhibition: Illudin S And Its Effects On Cdk2 In Ewing Sarcoma, Stephanie Diez, Natalie Flores, Alexandria Hernandez, Viviana Palacios, Terry Jo Shackleford May 2026

Cell Cycle Inhibition: Illudin S And Its Effects On Cdk2 In Ewing Sarcoma, Stephanie Diez, Natalie Flores, Alexandria Hernandez, Viviana Palacios, Terry Jo Shackleford

Cell and Molecular Methods

Ewing Sarcomas are aggressive round cell mesenchymal neoplasmas that have a high occurrence in children and young adults. CDK2 is a protein that is involved in the G1 phase of the cell cycle, which promotes the transition to the S phase. CDK2 kinase activation is mainly observed in the G1/S-phase transition.3 CDK2 binds to Cyclin proteins is responsible for entry and progression, thereby leading to maximal apoptosis activity in the S-phase. Illudin S is a drug that has been known to target cancer-specific cells, such as leukemia. Illudin S, in general are a cytotoxic metabolite that comes from plants, specifically …


Yap1 Knockdown And Panobinostat Treatment Increase Apoptotic Response And Decrease Gene Expression In Ewing Sarcoma Cells, Luna Collazo-Garcia, Alejandra Favela Santos, Madeline Torres-Salazar, Isabella Toscano, Terry Jo Shackleford May 2026

Yap1 Knockdown And Panobinostat Treatment Increase Apoptotic Response And Decrease Gene Expression In Ewing Sarcoma Cells, Luna Collazo-Garcia, Alejandra Favela Santos, Madeline Torres-Salazar, Isabella Toscano, Terry Jo Shackleford

Cell and Molecular Methods

Ewing sarcoma (EWS) is considered to be one of the most aggressive pediatric malignancies, often characterized by its dysregulated gene expression driven by oncogenic fusion proteins. The Hippo signaling effector Yes-associated protein 1 (YAP1) has been known in promoting cell proliferation, survival, and therapeutic resistance in multiple cancers. However, its role in Ewing sarcoma response to treatment remains unclear. This study investigated whether YAP1 knockdown enhances the sensitivity of Ewing sarcoma cells to the histone deacetylase inhibitor Panobinostat. Ewing sarcoma, ES8, cells were transfected with a YAP1-targeting siRNA (siYAP1) or a non-targeting control (siControl) and treated with DMSO, 0.1 μM, …


Everolimus Treatment Combined With Akt1 Knockdown Increased Apoptosis And Decreased Cell Proliferation In Ewing Sarcoma Cells, Arisha Arif, Alfie Barcenez, Sophia Ruter, Nicole Vanegas-Riddick, Terry Jo Shackleford May 2026

Everolimus Treatment Combined With Akt1 Knockdown Increased Apoptosis And Decreased Cell Proliferation In Ewing Sarcoma Cells, Arisha Arif, Alfie Barcenez, Sophia Ruter, Nicole Vanegas-Riddick, Terry Jo Shackleford

Cell and Molecular Methods

The purpose of this study is to use the gene AKT1, due to the interest in AKT1’s role in cancer cell proliferation, and the drug Everolimus, to determine if combined targeted therapy works as a more efficient therapeutic approach. Ewing Sarcoma has been connected to chromosomal translocations and is most common in pediatric patients. It is most often treated with chemotherapy and local treatments. It may be connected to the gene AKT1 due to how it regulates cell metabolism, growth, and proliferation. The gene mTOR is similarly connected to cell metabolism and proliferation, and is inhibited by the drug Everolimus. …


Sirna Knockdown Of Rptor Reduces Rptor Expression, Increases Brd4 Expression, And Alters Proliferation And Apoptosis In Ewing's Sarcoma Cells, Sergio Cipriano, David Leavitt, Michael Olivia, Liam Valdez, Terry Jo Shackleford May 2026

Sirna Knockdown Of Rptor Reduces Rptor Expression, Increases Brd4 Expression, And Alters Proliferation And Apoptosis In Ewing's Sarcoma Cells, Sergio Cipriano, David Leavitt, Michael Olivia, Liam Valdez, Terry Jo Shackleford

Cell and Molecular Methods

Ewing sarcoma is a highly aggressive cancer that primarily affects children and young adults. Although treatment options exist, many patients do not respond effectively, showing the need for improved targeted therapies. RPTOR is a key in mTORC1 complex which regulates cell growth, proliferation, and survival. LY2874455 is a selective pan-FGFR inhibitor that targets growth factor signaling pathways involved in tumor progression, and FGFR signaling interacts with pathways such as mTOR, making it a potential target for combination therapies. We hypothesized that silencing RPTOR in Ewing sarcoma cells would disrupt mTOR signaling and alter expression of genes linked to cell survival …


Everolimus And Sirna-Mediated Mtor Inhibition Reduces Proliferation And Promotes Apoptosis In Ewing Sarcoma Cells, Dylan Calvert, Malorie Martinez, Alexa Miner, Ellis Quiroga, Terry Jo Shackleford May 2026

Everolimus And Sirna-Mediated Mtor Inhibition Reduces Proliferation And Promotes Apoptosis In Ewing Sarcoma Cells, Dylan Calvert, Malorie Martinez, Alexa Miner, Ellis Quiroga, Terry Jo Shackleford

Cell and Molecular Methods

Ewing Sarcoma (ES) is an aggressive pediatric bone cancer characterized by rapid cell proliferation and poor prognosis, making the identification of therapeutic targets critical. One of  the mechanistic targets is rapamycin (mTOR) signaling pathway, which is critical for regulating cell growth, proliferation, and survival. Abnormal activation of the mTOR signaling pathway has been linked to the progression of ES, as it drives uncontrolled cell growth and apoptosis resistance. Because mTOR represents a promising therapeutic target for ES treatment, we hypothesized that inhibiting mTOR activity through an siRNA-mediated knockdown or through Everolimus drug treatment, would reduce cell proliferation and promote ES …


Exploring The Synergistic Effects Of Cisplatin And Curcumin In Osteosarcoma Cells, Ellis Stafford, Alexa Cabral, Andrea Florian Ph.D., Reese Nagy Jan 2026

Exploring The Synergistic Effects Of Cisplatin And Curcumin In Osteosarcoma Cells, Ellis Stafford, Alexa Cabral, Andrea Florian Ph.D., Reese Nagy

SPARK Symposium Presentations

Osteosarcoma (OS) is a highly aggressive bone cancer characterized by rapid metastasis, which drastically reduces patient survival rates from 70% in localized cases to 30% upon metastasis. Current treatments combining chemotherapy with cisplatin and surgical intervention are often ineffective against metastatic OS and are associated with significant side effects. Cisplatin targets cancer cells by binding to DNA, disrupting transcription and replication, and inducing apoptosis. To address the challenges associated with current treatments, this study investigates the potential of combining cisplatin with curcumin, the bioactive compound derived from turmeric, as a novel therapeutic approach. Curcumin has shown anticancer properties by inducing …


Synergistic Sensitization Of Pancreatic Cancer Cells By Nanosecond Pulsed Electric Fields And Cold Atmospheric Plasma Via Amplifying Ros And Apoptotic Signaling, Zobia Minhas, Edwin A. Oshin, Lifang Yang, Chunqi Jiang, Siqi Guo Jan 2026

Synergistic Sensitization Of Pancreatic Cancer Cells By Nanosecond Pulsed Electric Fields And Cold Atmospheric Plasma Via Amplifying Ros And Apoptotic Signaling, Zobia Minhas, Edwin A. Oshin, Lifang Yang, Chunqi Jiang, Siqi Guo

Bioelectrics Publications

Pancreatic cancer remains a highly lethal malignancy, with standard therapies offering limited benefits in advanced stages; thus, novel strategies that exploit specific cancer cell vulnerabilities are urgently needed. Building on our previous findings that nanosecond pulsed electric fields (nsPEF) combined with cold atmospheric plasma (CAP) produce enhanced cytotoxicity, this study investigates the molecular mechanisms underlying this synergy. Pan02 pancreatic cancer cells were subjected to nsPEF, CAP, or a combination of both. We assessed cell viability, reactive oxygen species (ROS) production, and mitochondrial integrity using metabolic assays, flow cytometry, and fluorescence microscopy. Apoptotic markers were evaluated via Western blotting and caspase …


Evaluating The Sna1 Gene Using Crispr Mediated Knockdown In Ewing Sarcoma Cells, Rosanna Jees, Sonia Cerrillo, Terry Jo Shackleford Dec 2025

Evaluating The Sna1 Gene Using Crispr Mediated Knockdown In Ewing Sarcoma Cells, Rosanna Jees, Sonia Cerrillo, Terry Jo Shackleford

Mechanisms of Disease

Ewing sarcoma is a pediatric cancer with limited therapeutic options and poor long-term survival. CRISPR–Cas9–mediated gene editing provides a powerful tool for investigating tumor molecular behavior and identifying potential therapeutic targets. In this study, we worked with CRISPR–Cas9 in Ewing sarcoma ES8 cells to evaluate the roles of the transcription factors SNAI1 and SNAI2, both implicated in epithelial–mesenchymal transition and cancer progression. Using guide RNAs targeting each gene, we assessed proliferation, apoptosis, migration, and long-term survival through Incucyte live-cell imaging and colony-formation assays. Knockout of SNAI1 resulted in decreased cell proliferation and reduced migratory capacity compared with controls, suggesting a …


Effects Of Ptk2 Knockdown On Key Cellular Processes In Es8 Cells, Adrian Cruz, Emiliano Rueda, Dylan Andrews, Terry Jo Shackleford Dec 2025

Effects Of Ptk2 Knockdown On Key Cellular Processes In Es8 Cells, Adrian Cruz, Emiliano Rueda, Dylan Andrews, Terry Jo Shackleford

Mechanisms of Disease

Ewing sarcoma is an aggressive form of pediatric cancer characterized by rapid growth and metastatic potential, with limited treatment options available. PTK2 is a key regulator of many pathways involved in tumor behavior, including integrin-mediated adhesion, survival, and migration. This research lab investigated how CRISPR-Cas9 knockdown of PTK2 can affect cellular processes in ES8 Ewing sarcoma cells. To assess the effectiveness of reducing PTK2 expression, we utilized live-cell imaging, wound-healing assays, measurements of caspase activity, colony formation, and qRT-PCR. Our results showed that incomplete knockdown decreased cell proliferation and colony formation, while also increasing apoptotic activity. Additionally, migratory ability was …


How Cxcr4 Knockdown Affects Tumorigenic Properties In Es8 Cells, Gabriella Galdeano, Damon James, Terry Jo Shackleford Dec 2025

How Cxcr4 Knockdown Affects Tumorigenic Properties In Es8 Cells, Gabriella Galdeano, Damon James, Terry Jo Shackleford

Mechanisms of Disease

C-X-C chemokine receptor type 4 (CXCR4) is a seven-transmembrane G-protein–coupled receptor (GPCR). When activated by its ligand SDF-1 (CXCL12), CXCR4 triggers signaling pathways that promote cell survival, proliferation, angiogenesis, and chemotaxis. Many cancers exploit the CXCR4/SDF-1 axis to support tumor growth and metastasis. Ewing sarcoma (ES8) is an aggressive pediatric bone and soft-tissue cancer, and elevated CXCR4 signaling has been linked to increased migration and metastatic behavior. ES8 cells, a well-established ES8 cell line, provided a model to study how CXCR4contributes to tumor progression. CRISPR-Cas9 genome editing was used to knock down CXCR4 in ES8 cells, delivered through lipid-based transfection. …


Investigating The Role Of Twist1 In Cancer Progression Using Crispr Knockdown, Abby Guerrero, Sofia Perez, Terry J. Shackleford Dec 2025

Investigating The Role Of Twist1 In Cancer Progression Using Crispr Knockdown, Abby Guerrero, Sofia Perez, Terry J. Shackleford

Mechanisms of Disease

TWIST1 is a transcription factor that plays a critical role in epithelial-mesenchymal transition (EMT), a process that promotes cancer cell migration, invasion, and metastasis. This study investigates the functional role of TWIST1 in cancer progression by using CRISPR/Cas9-mediated knockdown to examine its effects on apoptosis, proliferation, migration, and invasion. TWIST1 was knocked down in cancer cell lines using CRISPR/Cas9 assay. Knockdown efficiency and changes in genes were confirmed by qRT-PCR. Functional assays included caspase assays for apoptosis, MTT assays for proliferation, wound-healing assays for migration, Matrigel invasion assays, and colony formation assays to assess long-term growth and invasive potential. Across …


Itgb1 Knockdown Alters Apoptosis And Proliferation In Ewing Sarcoma Cells, Aditi Kumar, Magdalena Saad, Terry J. Shackleford Dec 2025

Itgb1 Knockdown Alters Apoptosis And Proliferation In Ewing Sarcoma Cells, Aditi Kumar, Magdalena Saad, Terry J. Shackleford

Mechanisms of Disease

Integrin beta 1 (ITGB1) is an adhesion receptor that link cells to the extracellular matrix and regulates pathways involved in survival, proliferation, and migration. In order to understand its role in Ewing Sarcoma, we applied CRISPR-Cas9 with two guide RNAs to knock down ITGB1 in ES8 cells. We then assessed changes in cell growth, death, movement, and gene expression using Incucyte live-cell imaging, colony formation assays, wound healing assays, and qRT-PCR. qRT-PCR showed partial ITGB1 reduction, with ITGB1_gRNA2 producing the strongest decrease. ITGB1_gRNA2 also led to a small increase in caspase activity and a 20-30% increase in proliferation at the …


Global Erk/Mapk Activation Determines Oncogenic Fitness In Kras-Mutant Pancreatic Ductal Adenocarcinoma, Rachel A. Burge Aug 2025

Global Erk/Mapk Activation Determines Oncogenic Fitness In Kras-Mutant Pancreatic Ductal Adenocarcinoma, Rachel A. Burge

MUSC Theses and Dissertations

In pancreatic ductal adenocarcinoma (PDAC), ~95% of cases harbor an activating KRAS mutation. The most common KRAS mutations in PDAC are KRASG12D (42%), KRASG12V (31%), and KRASG12R (15%). Patients harboring KRASG12R mutations have increased overall survival compared to those with KRASG12D/V-mutations. While KRASG12D/Vare common in all KRAS-mutant cancers, KRASG12Ris only common in PDAC.

KRASG12R is unable to activate the lipid kinase PIK3CA, a KRAS effector that is important for tumorigenesis in murine models. To investigate the tumorigenic potential of KRASG12R and the mechanisms that enable this mutation …


Ks151 Synergizes With Venetoclax And Abt-737 In Aml: Efficacy In Both Flt3-Wildtype And Flt3-Mutant Models, Sahil Jethi, Arnold Rojas, Omar S. Al-Odat, Krishne Gowda, Subash C. Jonnalagadda, Manoj Pandey May 2025

Ks151 Synergizes With Venetoclax And Abt-737 In Aml: Efficacy In Both Flt3-Wildtype And Flt3-Mutant Models, Sahil Jethi, Arnold Rojas, Omar S. Al-Odat, Krishne Gowda, Subash C. Jonnalagadda, Manoj Pandey

Rowan-Virtua Research Day

Acute myeloid leukemia (AML) is the most common leukemia in adult patients, with a 5-year survival rate of less than 30 percent. Therefore, more effective therapeutic strategies are required to prolong the survival of AML patients. Importantly, anti-apoptotic proteins, especially B-cell lymphoma 2 (Bcl-2), overexpression in AML is associated with uncontrolled growth as well as chemoresistance. Unsurprisingly, Bruton’s tyrosine kinase (BTK) overexpresses in AML and associated with poor prognosis and chemoresistance. The FDA-approved BTK inhibitor, ibrutinib, has been successful in treating other hematologic malignancies, but a proportion of patients relapse mainly because of acquired mutations at Cys481Ser (C481S) in the …


Investigation Of The Effects Of The Peptidylarginine Deiminase Inhibitor Cl-Amidine On Apoptosis And Gene Expression In Ovarian Cancer, Victoria Walden Apr 2025

Investigation Of The Effects Of The Peptidylarginine Deiminase Inhibitor Cl-Amidine On Apoptosis And Gene Expression In Ovarian Cancer, Victoria Walden

Longwood Senior Thesis Proposal

Peptidylarginine deiminases (PADs) are a family of enzymatic proteins responsible for the conversion of arginine and methylarginine residues to citrulline. This conversion is important for several key cellular processes including transcriptional gene regulation. Recently, a link has been established between overexpression of a particular PAD, PAD4, and the accelerated progression of both autoimmune diseases and cancers. Ovarian cancer exhibits heightened levels of PAD4 in affected cells. High levels of PAD4 are associated with the formation of neutrophil extracellular traps (NETs) that promote cancer metastasis, and downregulation of the p53 apoptotic pathway. Thus, it is important to explore inhibitors of PAD4. …


Uncovering The Mechanisms Of Glioblastoma Relapse Prevention With Niclosamide And Camptothecin Treatment, Xiaoqian Fang, Araely Ruiz, Eunseo Yang, Brianna Morin, Kimberly Herrera-Toscano, Megan Szobody, Josue Fonseca, John-Beloved Osho, Raquel Lara Mar 2025

Uncovering The Mechanisms Of Glioblastoma Relapse Prevention With Niclosamide And Camptothecin Treatment, Xiaoqian Fang, Araely Ruiz, Eunseo Yang, Brianna Morin, Kimberly Herrera-Toscano, Megan Szobody, Josue Fonseca, John-Beloved Osho, Raquel Lara

Research Symposium

Background: Glioblastoma multiforme (GBM) is the most common and lethal malignant primary brain tumor for which the development of efficacious chemotherapeutic agents remains an urgent need. In our previous studies, we demonstrated that niclosamide and camptothecin (CPT) synergistically suppressed the proliferation in human glioblastoma U87 MG cells. Recently, we observed that U87 MG cells failed to resume growth after the combined treatment was removed, a phenomenon not seen with either agent alone. We aimed to explore the sustained anti-tumor effects of niclosamide and CPT in GBM.

Methods: Human glioblastoma U87 MG cells were treated with 5 mM niclosamide, 5 mM …


Honey: A Natural Recipe For The Management Of Pancreatic Cancer, Aun A. Bangash, Muhammad A. Bangash, Georgina Villanueva, Haider Ahsan, Shiza Khan, Rida Shareef, Mudassier Ahmad, Dae J. Kim, Sahir S. Alvi, Bilal B. Hafeez Sep 2024

Honey: A Natural Recipe For The Management Of Pancreatic Cancer, Aun A. Bangash, Muhammad A. Bangash, Georgina Villanueva, Haider Ahsan, Shiza Khan, Rida Shareef, Mudassier Ahmad, Dae J. Kim, Sahir S. Alvi, Bilal B. Hafeez

Research Colloquium

Background: Pancreatic cancer (PanCa) is the fourth deadliest cancer worldwide and expected to become the second deadliest cancer by 2030. In the USA, the National Cancer Institute put forth a grim prediction stating that there will be 64,050 new cases in 2023 alone and about 50,000 of these patients will die. The first line treatment for pancreatic cancer is Folfrinox, a three-drug regimen consisting of 5-Fluorouracil, irinotecan, and oxaliplatin. The second line treatment is gemcitabine combined with paclitaxel. Only 19% of patients who are prescribed the former regimen survive past 18 months of treatment while just 6% of patients survive …


Stanniocalcin 2 Governs Cancer Cell Adaptation To Nutrient Insufficiency Through Alleviation Of Oxidative Stress, Shuo Qie, Haijuan Xiong, Yaqi Liu, Chenhui Yan, Yalei Wang, Lifeng Tian, Chenguang Wang, Nianli Sang Aug 2024

Stanniocalcin 2 Governs Cancer Cell Adaptation To Nutrient Insufficiency Through Alleviation Of Oxidative Stress, Shuo Qie, Haijuan Xiong, Yaqi Liu, Chenhui Yan, Yalei Wang, Lifeng Tian, Chenguang Wang, Nianli Sang

Department of Pharmacology, Physiology, and Cancer Biology Faculty Papers

Solid tumours often endure nutrient insufficiency during progression. How tumour cells adapt to temporal and spatial nutrient insufficiency remains unclear. We previously identified STC2 as one of the most upregulated genes in cells exposed to nutrient insufficiency by transcriptome screening, indicating the potential of STC2 in cellular adaptation to nutrient insufficiency. However, the molecular mechanisms underlying STC2 induction by nutrient insufficiency and subsequent adaptation remain elusive. Here, we report that STC2 protein is dramatically increased and secreted into the culture media by Gln-/Glc- deprivation. STC2 promoter contains cis-elements that are activated by ATF4 and p65/RelA, two transcription factors activated by …


Investigating The Therapeutic Potential Of Soursop In Treating Hematologic Malignancies, Sabrina Marie Paparo, Rebeca Mendoza, Robert Chitren, Omar Al-Odat, Emily Nelson, Subash Jonnalagadda, Roger Strair, Manoj Pandey May 2024

Investigating The Therapeutic Potential Of Soursop In Treating Hematologic Malignancies, Sabrina Marie Paparo, Rebeca Mendoza, Robert Chitren, Omar Al-Odat, Emily Nelson, Subash Jonnalagadda, Roger Strair, Manoj Pandey

Rowan-Virtua Research Day

Acute Myeloid Leukemia (AML) and Multiple Myeloma (MM) are hematologic malignancies that originate in the bone marrow and account for approximately 1.3% and 2% of cancer cases, respectively. AML is characterized by an accumulation of myeloblasts, or immature myeloid cells, that have the potential to spread to the peripheral blood. There is an uncontrolled proliferation of plasma cells in the bone marrow in MM. While the current treatment options for both AML and MM show promise in achieving initial remission, it is unfortunately common for patients to experience relapse and develop drug resistance. There is a theory that relapse and …


Honey Targets Ribosome Biogenesis Process In Human Pancreatic Cancer Cells To Inhibit Their Growth And Metastatic Phenotypes, Aun A. Bangash, Muhammad Bangash, Haider Ahsan, Shiza Khan, Mudassier Ahmad, Dae Joon Kim, Sahir Alvi, Bilal Hafeez Mar 2024

Honey Targets Ribosome Biogenesis Process In Human Pancreatic Cancer Cells To Inhibit Their Growth And Metastatic Phenotypes, Aun A. Bangash, Muhammad Bangash, Haider Ahsan, Shiza Khan, Mudassier Ahmad, Dae Joon Kim, Sahir Alvi, Bilal Hafeez

Research Symposium

Background: Pancreatic cancer (PanCa) is the fourth deadliest cancer worldwide and is expected to become the second deadliest cancer by 2030. In the USA, the National Cancer Institute put forth a grim prediction stating that there will be 64,050 new cases in 2023 alone and about 50,000 of these patients will die. Existing therapeutic regimens against PanCa are not that effective and show unacceptable toxicities. Therefore, developing highly effective new agents with less toxicity is urgently required, which could be used as a monotherapy or as an adjuvant to treat PanCa patients. Honey is known for its tremendous health benefits …


Synergistic Effects Of Nanosecond Pulsed Plasma And Electric Field On Inactivation Of Pancreatic Cancer Cells In Vitro, Edwin A. Oshin, Zobia Minhas, Ruben M. L. Colunga Biancatelli, John D. Catravas, Richard Heller, Siqi Guo, Chunqi Jiang Jan 2024

Synergistic Effects Of Nanosecond Pulsed Plasma And Electric Field On Inactivation Of Pancreatic Cancer Cells In Vitro, Edwin A. Oshin, Zobia Minhas, Ruben M. L. Colunga Biancatelli, John D. Catravas, Richard Heller, Siqi Guo, Chunqi Jiang

Bioelectrics Publications

Nanosecond pulsed atmospheric pressure plasma jets (ns-APPJs) produce reactive plasma species, including charged particles and reactive oxygen and nitrogen species (RONS), which can induce oxidative stress in biological cells. Nanosecond pulsed electric field (nsPEF) has also been found to cause permeabilization of cell membranes and induce apoptosis or cell death. Combining the treatment of ns-APPJ and nsPEF may enhance the effectiveness of cancer cell inactivation with only moderate doses of both treatments. Employing ns-APPJ powered by 9 kV, 200 ns pulses at 2 kHz and 60-nsPEF of 50 kV/cm at 1 Hz, the synergistic effects on pancreatic cancer cells (Pan02) …


Evidence Of Direct Interaction Between Cisplatin And The Caspase-Cleaved Prostate Apoptosis Response-4 Tumor Suppressor, Krishna K. Raut, Samjhana Pandey, Gyanendra Kharel, Steven M. Pascal Jan 2024

Evidence Of Direct Interaction Between Cisplatin And The Caspase-Cleaved Prostate Apoptosis Response-4 Tumor Suppressor, Krishna K. Raut, Samjhana Pandey, Gyanendra Kharel, Steven M. Pascal

Chemistry & Biochemistry Faculty Publications

Prostate apoptosis response-4 (Par-4) tumor suppressor protein has gained attention as a potential therapeutic target owing to its unique ability to selectively induce apoptosis in cancer cells, sensitize them to chemotherapy and radiotherapy, and mitigate drug resistance. It has recently been reported that Par-4 interacts synergistically with cisplatin, a widely used anticancer drug. However, the mechanistic details underlying this relationship remain elusive. In this investigation, we employed an array of biophysical techniques, including circular dichroism spectroscopy, dynamic light scattering, and UV–vis absorption spectroscopy, to characterize the interaction between the active caspase-cleaved Par-4 (cl-Par-4) fragment and cisplatin. Additionally, elemental analysis was …


Cyclophosphamide And Epirubicin Induce Apoptotic Cell Death In Microglia Cells, Rafael De La Hoz-Camacho Sep 2023

Cyclophosphamide And Epirubicin Induce Apoptotic Cell Death In Microglia Cells, Rafael De La Hoz-Camacho

Research Symposium

Background. Chemotherapy Related Cognitive Impairment’s (CRCI), diminish patient’s quality life, being breast cancer (BC) patients the most affected. Microglia is described to play a major role in CRCI; hence, the aim of this research was to describe the cytotoxicity of cyclophosphamide (CTX) and Epirubicin (EPI), on microglia (SIM-A9), compared to BC cells (4T1).

Methods. We assessed cell viability (Resazurin) and cell death (AnnV), as well as nuclear damage with γ-H2AX, p53, p16 and cell cycle analysis (PI staining) by flow cytometry (FC). Furthermore, we evaluated ΔΨm (DIOC6), ROS (DCFDA) and NO (DAF-FM) production. Finally, caspase activation (TF2-VAD-FMK) and autophagy (CYTO-ID). …


Molecular Mechanisms Of Natural And Synthetic Compounds Against Breast And Colon Cancer, Aysha Hamad Alneyadi Jun 2023

Molecular Mechanisms Of Natural And Synthetic Compounds Against Breast And Colon Cancer, Aysha Hamad Alneyadi

Dissertations

Cancer is a complex disease with various causes, including genetic mutations, viruses, chemical agents, and lifestyle factors. Although numerous studies have been conducted to develop a cure or novel medications for cancer, no standout treatment has been found. In this project, the use of various natural and synthetic compounds as potential cancer treatments was investigated using triple-negative breast cancer (TNBC) and colon cancer cells. The cancer therapy strategies investigated were based on plant-derived therapuetic approaches including an essential oil (Origanum majorana essential oil), a pure phytochemical (Carnosol), and newly developed synthetic drugs (Chromenes drevatives; C1 and C2). This study …


Design, Synthesis, And Antiproliferative Activity Of Benzopyran-4-One-Isoxazole Hybrid Compounds, Shilpi Gupta, Shang Eun Park, Saghar Mozaffari, Bishoy El-Aarag, Keykavous Parang, Rakesh Kumar Tiwari May 2023

Design, Synthesis, And Antiproliferative Activity Of Benzopyran-4-One-Isoxazole Hybrid Compounds, Shilpi Gupta, Shang Eun Park, Saghar Mozaffari, Bishoy El-Aarag, Keykavous Parang, Rakesh Kumar Tiwari

Pharmacy Faculty Articles and Research

The biological significance of benzopyran-4-ones as cytotoxic agents against multi-drug resistant cancer cell lines and isoxazoles as anti-inflammatory agents in cellular assays prompted us to design and synthesize their hybrid compounds and explore their antiproliferative activity against a panel of six cancer cell lines and two normal cell lines. Compounds 5a–d displayed significant antiproliferative activities against all the cancer cell lines tested, and IC50 values were in the range of 5.2–22.2 μM against MDA-MB-231 cancer cells, while they were minimally cytotoxic to the HEK-293 and LLC-PK1 normal cell lines. The IC50 values of 5a–d …


Apoptosis Induction In Jurkat T-Lymphocytes By Proton Pump Inhibitors (Ppis), Shreya Murali, Randall Reif Apr 2023

Apoptosis Induction In Jurkat T-Lymphocytes By Proton Pump Inhibitors (Ppis), Shreya Murali, Randall Reif

Departmental Honors & Graduate Capstone Projects

Apoptosis, commonly known as programmed cell death, constantly occurs in humans. As a cancer cell increases in acidity, apoptosis is induced. In healthy cells, proton pump proteins allow for H+ ions to permeate cellular membranes, regulating pH. However, proton pump inhibitors (PPIs), such as omeprazole, prevent proton movement. In previous studies, omeprazole induced cell death in Jurkat T lymphocytes; however, there was no confirmation of whether the cells died through apoptosis, or through necrosis, where the cell bursts. By using Annexin-V staining, the effects of omeprazole, dexlansoprazole, and esomeprazole on apoptosis induction can be measured. Cell death was observed …


The Role Of Myocardin In The Progression Of Non-Small Cell Lung Cancer, Soromidayo Akinsiku Jan 2023

The Role Of Myocardin In The Progression Of Non-Small Cell Lung Cancer, Soromidayo Akinsiku

Biotechnology Theses

Lung cancer is the leading cause of cancer-related mortality in the world and NSCLC accounts for 85% of all lung cancer cases. The mainstay of treatment for patients with stage I, II and IIIA NSCLC is surgery, followed by post-operative cisplatin-based chemotherapy. Additional adjuvant therapy involving targeted tyrosine kinase inhibitors has been in use, however even for the targeted therapy, resistance eventually develops. Therefore, there is a need for identifying novel targets for this life-threatening disease. Given that preliminary studies in Ikebe lab revealed that myocardin knockdown significantly promoted caspase-3 degradation, in this study, using myocardin siRNA, we investigated the …


Bis-Indolyl Compounds And The Induction Of Apoptosis In T98g Glioblastoma Multiforme Cells, Margot C. Brown Dec 2022

Bis-Indolyl Compounds And The Induction Of Apoptosis In T98g Glioblastoma Multiforme Cells, Margot C. Brown

Seton Hall University Dissertations and Theses (ETDs)

1,1-bis(3’idolyl)-1(aryl)methane compounds (BIM compounds) have been shown to have anti-cancer properties in colon cancer, bladder cancer, and leukemia cells. The purpose of this work was to determine if BIM compounds could be an effective treatment of glioblastoma multiforme. Sulforhodamine B (SRB) assays showed that 20µM of the BIM compounds could inhibit cellular proliferation of the T98G glioblastoma multiforme cell line over 72 hours. Then immunoblotting was used to analyze the molecular pathway induced by BIM compounds. An increase in the expression of both BAX and cleaved caspase 3 suggest BIM compounds activate programmed cell death, or apoptosis in glioblastoma cells. …


Cytotoxic Activity Of Non-Specific Lipid Transfer Protein (Nsltp1) From Ajwain (Trachyspermum Ammi) Seeds, Saud O. Alshammari, Taibah Aldakhil, Qamar A. Alshammari, David Salehi, Aftab Ahmed May 2022

Cytotoxic Activity Of Non-Specific Lipid Transfer Protein (Nsltp1) From Ajwain (Trachyspermum Ammi) Seeds, Saud O. Alshammari, Taibah Aldakhil, Qamar A. Alshammari, David Salehi, Aftab Ahmed

Pharmacy Faculty Articles and Research

Background

Trachyspermum ammi, commonly known as Ajwain, is a member of the Apiaceae family. It is a therapeutic herbal spice with diverse pharmacological properties, used in traditional medicine for various ailments. However, all previous studies were conducted using small molecule extracts, leaving the protein’s bioactivity undiscovered.

Aim

The current study aimed to demonstrate the cytotoxic activity of Ajwain non-specific lipid transfer protein (nsLTP1) in normal breast (MCF10A), breast cancer (MCF-7), and pancreatic cancer (AsPC-1) cell lines. Also, to evaluate its structural stability in human serum as well as at high temperature conditions.

Methods

The cytotoxic activity of Ajwain nsLTP1 was …


Alkaline Plasma-Activated Water (Paw) As An Innovative Therapeutic Avenue For Cancer Treatment, Bolun Pang, Zhijie Liu, Sitao Wang, Yuting Gao, Miao Qi, Dehui Xu, Renwu Zhou, Dingxin Liu, Michael G. Kong Jan 2022

Alkaline Plasma-Activated Water (Paw) As An Innovative Therapeutic Avenue For Cancer Treatment, Bolun Pang, Zhijie Liu, Sitao Wang, Yuting Gao, Miao Qi, Dehui Xu, Renwu Zhou, Dingxin Liu, Michael G. Kong

Bioelectrics Publications

Plasma-activated water (PAW) is considered to be an effective anticancer agent due to the diverse aqueous reactive oxygen and nitrogen species (RONS: ROS and RNS), but the drawback of low dose and short duration of RONS in acidified PAW limits their clinical application. Herein, this Letter presents an innovative therapeutic avenue for cancer treatment with highly-effective alkaline PAW prepared by air surface plasma. This anticancer alkaline formulation is comprised of a rich mixture of highly chemical RONS and exhibited a prolonged half-life compared to acidified PAW. The H2O2, NO2-, and ONOO-/O2 …