scholarly journals Pancreatic cancer cell lines deficient in argininosuccinate synthetase are sensitive to arginine deprivation by arginine deiminase

2008 ◽  
Vol 123 (8) ◽  
pp. 1950-1955 ◽  
Author(s):  
Tawnya L. Bowles ◽  
Randie Kim ◽  
Joseph Galante ◽  
Colin M. Parsons ◽  
Subbulakshmi Virudachalam ◽  
...  
Keyword(s):  
Pancreatic Cancer ◽  
Cell Lines ◽  
Cancer Cell ◽  
Pancreatic Cancer Cell ◽  
Cancer Cell Lines ◽  
Arginine Deiminase ◽  
Argininosuccinate Synthetase ◽  
Arginine Deprivation

Gastrin regulates growth of human pancreatic cancer in a tonic and autocrine fashion

1996 ◽  
Vol 270 (5) ◽  
pp. R1078-R1084 ◽  
Author(s):  
J. P. Smith ◽  
A. Shih ◽  
Y. Wu ◽  
P. J. McLaughlin ◽  
I. S. Zagon
Keyword(s):  
Gene Expression ◽  
Pancreatic Cancer ◽  
Cell Lines ◽  
Cancer Cell ◽  
Pancreatic Cancer Cell ◽  
Cancer Cell Lines ◽  
Human Pancreatic Cancer ◽  
Growth Media ◽  
Human Pancreatic Cancer Cell ◽  
Cell Extracts

The gastrointestinal peptides gastrin and cholecystokinin (CCK) stimulate growth of human pancreatic cancer through a CCK-B/gastrin- like receptor. In the present study we evaluated whether growth of human pancreatic cancer is endogenously regulated by gastrin. Immunohistomical examination of BxPC-3 cells and tumor xenografts revealed specifc gastrin immunoreactivity. Gastrin was detected by radioimmunoassay in pancreatic cancer cell extracts and in pancreatic cancer cell extracts and in the growth media. With use of reverse-transcriptase polymerase chain reaction gastrin gene expression was detected in both cultured BxPC-3 cancer cells and transplanted tumors, as well as seven addition human pancreatic cancer cell lines. Growth of BxPC-3 human pancreatic cancer cell in serum-free medium was inhibited by the addition of the CCK-B/gastrin receptor antagonist L-365,260, and gastrin treatment reversed the inhibitory effect of the antagonist. A selective gastrin antibody (Ab repressed growth of BxPC-3 cells. Gastrin immunoreactivity was detected in fresh human pancreatic cancer specimens but not in normal human pancreatic tissue. These data provide the first evidence that growth of a human pancreatic cancer is tonically stimulated by the autocrine production of gastrin. Evidence for the ubiquity of this system was provided by the detection of gastrin gene expression in multiple human pancreatic cancer cell lines and detection of gastrin in cell lines and fresh pancreatic tumors.

scholarly journals Verteporfin-based photodynamic therapy overcomes gemcitabine insensitivity in a panel of pancreatic cancer cell lines

2011 ◽  
Vol 43 (7) ◽  
pp. 565-574 ◽  
Author(s):  
Jonathan P. Celli ◽  
Nicolas Solban ◽  
Alvin Liang ◽  
Stephen P. Pereira ◽  
Tayyaba Hasan
Keyword(s):  
Pancreatic Cancer ◽  
Photodynamic Therapy ◽  
Cell Lines ◽  
Cancer Cell ◽  
Pancreatic Cancer Cell ◽  
Cancer Cell Lines

scholarly journals OSU-A9 inhibits pancreatic cancer cell lines by modulating p38-JAK-STAT3 signaling

Oncotarget ◽  
2017 ◽  
Vol 8 (17) ◽  
pp. 29233-29246 ◽  
Author(s):  
Wan-Chi Tsai ◽  
Li-Yuan Bai ◽  
Yi-Jin Chen ◽  
Po-Chen Chu ◽  
Ya-Wen Hsu ◽  
...  
Keyword(s):  
Pancreatic Cancer ◽  
Cell Lines ◽  
Cancer Cell ◽  
Pancreatic Cancer Cell ◽  
Cancer Cell Lines ◽  
Stat3 Signaling

scholarly journals Fusaproliferin, a Fungal Phytotoxin Shows Rapid and Potent Cytotoxicity against Pancreatic Cancer Cell Lines

2018 ◽  
Author(s):  
Nazia Hoque ◽  
Choudhury Mahmood Hasan ◽  
Md. Sohel Rana ◽  
Amrit Varsha ◽  
Md. Hossain Sohrab ◽  
...  
Keyword(s):  
Pancreatic Cancer ◽  
Cell Lines ◽  
Cancer Cell ◽  
Fusarium Solani ◽  
Pancreatic Cancer Cell ◽  
Morphological Changes ◽  
Cancer Cell Lines ◽  
Microscopy Imaging ◽  
Ongoing Research ◽  
Synthetic Agents

As a part of our ongoing research on endophytic fungi, we have isolated a sesterterpene mycotoxin, fusaproliferin (FUS), from Fusarium solani strain associated with the plant Aglaonema hookerianum Schott. FUS showed rapid and sub-micromolar IC50 against pancreatic cancer cell lines. Time dependent survival analysis and microscopy imaging showed rapid morphological changes in cancer cell lines 4 hours after incubation with FUS. This provides a new chemical scaffold that can be further developed to obtain more potent synthetic agents against pancreatic cancer.

scholarly journals Selenium Induces Pancreatic Cancer Cell Death Alone and in Combination with Gemcitabine

Biomedicines ◽  
2022 ◽  
Vol 10 (1) ◽  
pp. 149
Author(s):  
David J. Wooten ◽  
Indu Sinha ◽  
Raghu Sinha
Keyword(s):  
Pancreatic Cancer ◽  
Cell Lines ◽  
Cancer Cell ◽  
Pancreatic Cancer Cell ◽  
Single Agent ◽  
Cancer Cell Lines ◽  
Chemotherapeutic Agents ◽  
Cancer Cell Death ◽  
Pancreatic Cancer Cells

Survival rate for pancreatic cancer remains poor and newer treatments are urgently required. Selenium, an essential trace element, offers protection against several cancer types and has not been explored much against pancreatic cancer specifically in combination with known chemotherapeutic agents. The present study was designed to investigate selenium and Gemcitabine at varying doses alone and in combination in established pancreatic cancer cell lines growing in 2D as well as 3D platforms. Comparison of multi-dimensional synergy of combinations’ (MuSyc) model and highest single agent (HSA) model provided quantitative insights into how much better the combination performed than either compound tested alone in a 2D versus 3D growth of pancreatic cancer cell lines. The outcomes of the study further showed promise in combining selenium and Gemcitabine when evaluated for apoptosis, proliferation, and ENT1 protein expression, specifically in BxPC-3 pancreatic cancer cells in vitro.

scholarly journals Intra-Tumoral Expression of SLC7A11 Is Associated with Immune Microenvironment, Drug Resistance, and Prognosis in Cancers: A Pan-Cancer Analysis

2021 ◽  
Vol 12 ◽  
Author(s):  
Jiajun He ◽  
Hongjian Ding ◽  
Huaqing Li ◽  
Zhiyu Pan ◽  
Qian Chen
Keyword(s):  
Pancreatic Cancer ◽  
Drug Resistance ◽  
Cancer Cells ◽  
Cell Lines ◽  
Cancer Cell ◽  
Pancreatic Cancer Cell ◽  
Mononuclear Cells ◽  
Cancer Cell Lines ◽  
Clinical Practices ◽  
Pan Cancer

While many anti-cancer modalities have shown potent efficacy in clinical practices, cancer prevention, timely detection, and effective treatment are still challenging. As a newly recognized iron-dependent cell death mechanism characterized by excessive generation of lipid peroxidation, ferroptosis is regarded as a potent weapon in clearing cancer cells. The cystine/glutamate antiporter solute carrier family 7 member 11 (SLC7A11) is the core target for ferroptosis regulation, the overexpression of which dictates downregulated sensitivity to ferroptosis in cancer cells. Hence, we elaborated the pan-cancer level bioinformatic study and systematically elucidated the role of intra-tumoral expression of SLC7A11 in the survival of cancer patients and potential immunotherapeutic response. Specifically, 25/27 (92.6%) cancers were featured with upregulated SLC7A11 expression, where SLC7A11 overexpression is a risk factor for worse overall survival in 8 cancers. We also validated SLC7A11 expression in multiple pancreatic cancer cell lines in vitro and found that it was upregulated in most pancreatic cancer cell lines (p < 0.05). Single-cell sequencing method revealed the SLC7A11 was majorly expressed in cancer cells and mononuclear cells. To further explore the function of SLC7A11 in cancer progression, we analyzed the influence on cell proliferation after the knockdown or knockout of SLC7A11 by either CRISPR or RNAi methods. Besides, the association between SLC7A11 and drug resistance was characterized using bioinformatic approaches as well. We also analyzed the association between the expression of SLC7A11 in multi-omics level and the intra-tumoral infiltration of immune cells based on cell annotation algorithms. Moreover, the relationship between SLC7A11 and the expression of MHC, immune stimulators, immune inhibitors as well as the response to immunotherapy was investigated. In addition, the SLC7A11 expression in colon adenocarcinoma, uterine corpus endometrial carcinoma, and stomach adenocarcinoma (STAD) is also positively associated with microsatellite instability and that in head and neck squamous cell carcinoma, STAD, and prostate adenocarcinoma is positively associated with neoantigen level, which further revealed the potential relationship between SLC7A11 and immunotherapeutic response.

scholarly journals Mitochondrial-Associated Protein LRPPRC is Related With Poor Prognosis Potentially and Exerts as an Oncogene via Maintaining Mitochondrial Function in Pancreatic Cancer

2021 ◽  
Author(s):  
Qiongying Hu ◽  
Li Wang ◽  
Yi Zhang ◽  
Bole Tian ◽  
ziyi Zhao ◽  
...  
Keyword(s):  
Pancreatic Cancer ◽  
Survival Rate ◽  
Cell Lines ◽  
Cancer Cell ◽  
Cancer Progression ◽  
Pancreatic Cancer Cell ◽  
Mitochondrial Gene ◽  
Cancer Cell Lines ◽  
Tumor Formation ◽  
Negatively Associated

Abstract BackgroundThe mitochondrial-associated protein LRPPRC exerts multiple functions involved in physiological processes, including mitochondrial gene translation, cell cycle progression and tumorigenesis. Previously, LRPPRC was reported to regulate mitophagy by interacting with Bcl-2 and Beclin 1 and thus modifying the activation of PI3KCIII and autophagy. Considering that LRPPRC was found to be negatively associated with survival rate, we hypothesize that LRPPRC may be involved in pancreatic cancer progression via its regulation of autophagy. Methodsreal-time quantitative PCR was performed to detect the expression of LRPPRC in 90 paired pancreatic cancer and adjacent tissues and five pancreatic cancer cell lines. Mitochondrial reactive oxidative species (ROS) level and function were measured. Mitophagy was measured by performing to detect LC3 level. ResultsBy performing RT-qPCR, the association of LRPPRC with the prognosis of pancreatic cancer was established and pancreatic cancer tissues had significantly higher LRPPRC expression than adjacent tissues. LRPPRC was negatively associated with the overall survival rate. LRPPRC was also upregulated in pancreatic cancer cell lines. Knockdown of LRPPRC promoted ROS accumulation, decreased mitochondrial membrane potential (MMP), promoted autophagy/mitophagy, and induced mitochondrial dysfunction. Subsequently, knockdown of LRPPRC inhibited malignant behaviors in PANC-1 cells, including proliferation, migration, invasion, tumor formation and chemoresistance to gemcitabine. Finally, by inhibiting autophagy/mitophagy using 3-MA, the inhibitory effect of LRPPRC knockdown on proliferation was reversed. ConclusionTaken together, our results indicate that LRPPRC may act as an oncogene via maintaining mitochondrial homoeostasis and could be used as a predictive marker for patient prognosis in pancreatic cancer.

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