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pancreatic cancer EMT

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https://www.readbyqxmd.com/read/28938477/growth-hormone-and-the-epithelial-to-mesenchymal-transition
#1
Alison L Brittain, Reetobrata Basu, Yanrong Qian, John J Kopchick
Context: Previous studies have implicated growth hormone (GH) in the progression of several cancers, including breast, colorectal and pancreatic. A mechanism by which GH may play this role in cancer is through the induction of the epithelial-to-mesenchymal transition (EMT). During the EMT process, epithelial cells lose their defining phenotypes causing loss of cellular adhesion and increased cell migration. This review aims to carefully summarize the previous two decades of research that points to GH as an initiator of EMT, in both cancerous and non-cancerous tissues...
August 4, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28930565/role-of-fibroblast-growth-factor-receptor-2-splicing-in-normal-and-cancer-cells
#2
Toshiyuki Ishiwata
Types 1-4 of fibroblast growth factor receptors (FGFR) are all expressed in various cancers. Because of its prominent role in carcinogenesis and cancer progression, FGFR-2, is being considered as a novel target in cancer treatment. Owing to the alternative splicing of its extracellular domain, FGFR-2 exists in two variants: IIIb and IIIc. FGFR-2 IIIb is mainly expressed in normal epithelial cells, as well as in oral mucosal, esophageal, gastric, colorectal, pancreatic, pulmonary, breast, endometrial, cervical, and prostate cancers...
January 1, 2018: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28904399/semaphorin-3%C3%A2-c-drives-epithelial-to-mesenchymal-transition-invasiveness-and-stem-like-characteristics-in-prostate-cells
#3
Kevin J Tam, Daniel H F Hui, Wilson W Lee, Mingshu Dong, Tabitha Tombe, Ivy Z F Jiao, Shahram Khosravi, Ario Takeuchi, James W Peacock, Larissa Ivanova, Igor Moskalev, Martin E Gleave, Ralph Buttyan, Michael E Cox, Christopher J Ong
Prostate cancer (PCa) is among the most commonly-occurring cancers worldwide and a leader in cancer-related deaths. Local non-invasive PCa is highly treatable but limited treatment options exist for those with locally-advanced and metastatic forms of the disease underscoring the need to identify mechanisms mediating PCa progression. The semaphorins are a large grouping of membrane-associated or secreted signalling proteins whose normal roles reside in embryogenesis and neuronal development. In this context, semaphorins help establish chemotactic gradients and direct cell movement...
September 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28895920/emt-and-treatment-resistance-in-pancreatic-cancer
#4
REVIEW
Nicola Gaianigo, Davide Melisi, Carmine Carbone
Pancreatic cancer (PC) is the third leading cause of adult cancer mortality in the United States. The poor prognosis for patients with PC is mainly due to its aggressive course, the limited efficacy of active systemic treatments, and a metastatic behavior, demonstrated throughout the evolution of the disease. On average, 80% of patients with PC are diagnosed with metastatic disease, and the half of those who undergo surgery and adjuvant therapy develop liver metastasis within two years. Metastatic dissemination is an early event in PC and is mainly attributed to an evolutionary biological process called epithelial-to-mesenchymal transition (EMT)...
September 12, 2017: Cancers
https://www.readbyqxmd.com/read/28883702/doublecortin-and-cam-kinase-like-1-as-an-independent-prognostic-factor-in-patients-with-resected-pancreatic-carcinoma
#5
Kohei Nishio, Kenjiro Kimura, Ryosuke Amano, Bunzo Nakata, Sadaaki Yamazoe, Go Ohira, Kotaro Miura, Naoki Kametani, Hiroaki Tanaka, Kazuya Muguruma, Kosei Hirakawa, Masaichi Ohira
AIM: To elucidate the effect of expression of doublecortin and CaM kinase-like-1 (DCLK1) in patients with pancreatic ductal adenocarcinoma (PDAC). METHODS: Tumor specimens were obtained from 136 patients with pancreatic cancer who had undergone resection without preoperative therapy between January 2000 and December 2013 at the Department of Surgical Oncology, Osaka City University. The resected specimens were analyzed for associations with clinicopathological data, including DCLK1 expression, epithelial mesenchymal transition (EMT) marker expression, and cancer stem cell (CSC) marker expression...
August 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28870807/a-natural-product-toosendanin-inhibits-epithelial-mesenchymal-transition-and-tumor-growth-in-pancreatic-cancer-via-deactivating-akt-mtor-signaling
#6
Zhe Pei, Wei Fu, Gongping Wang
The pancreatic cancer is among the most aggressive malignancies with strong proclivity to metastasis. The malignancy during pancreatic cancer progression is largely ascribed to epithelial-mesenchymal transition (EMT). Here we showed that toosendanin (TSN), which is an active component in traditional Chinese medicine, can strongly attenuate pancreatic cancer progression. TSN suppressed the viability and grow of pancreatic cancer cells in a dose-dependent manner. The migration and invasion of pancreatic cancer cells were also consistently inhibited dose-dependently...
September 13, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28855593/itga1-is-a-pre-malignant-biomarker-that-promotes-therapy-resistance-and-metastatic-potential-in-pancreatic-cancer
#7
Armen Gharibi, Sa La Kim, Justin Molnar, Daniel Brambilla, Yvess Adamian, Malachia Hoover, Julie Hong, Joy Lin, Laurelin Wolfenden, Jonathan A Kelber
Pancreatic ductal adenocarcinoma (PDAC) has single-digit 5-year survival rates at <7%. There is a dire need to improve pre-malignant detection methods and identify new therapeutic targets for abrogating PDAC progression. To this end, we mined our previously published pseudopodium-enriched (PDE) protein/phosphoprotein datasets to identify novel PDAC-specific biomarkers and/or therapeutic targets. We discovered that integrin alpha 1 (ITGA1) is frequently upregulated in pancreatic cancers and associated precursor lesions...
August 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28813705/the-lncrna-tug1-ezh2-axis-promotes-pancreatic-cancer-cell-proliferation-migration-and-emt-phenotype-formation-through-sponging-mir-382
#8
Liang Zhao, Hongwei Sun, Hongru Kong, Zongjing Chen, Bicheng Chen, Mengtao Zhou
BACKGROUND/AIMS: Pancreatic carcinoma (PC) is the one of the most common and malignant cancers worldwide. LncRNA taurine upregulated gene 1 (TUG1) was initially identified as a transcript upregulated by taurine, and the abnormal expression of TUG1 has been reported in many cancers. However, the biological role and molecular mechanism of TUG1 in PC still needs further investigation. METHODS: Quantitative real-time PCR (qRT-PCR) was performed to measure the expression of TUG1 in PC cell lines and tissues...
August 15, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28810656/hypoxia-inducible-factor-1%C3%AE-participates-in-hypoxia-induced-epithelial-mesenchymal-transition-via-response-gene-to-complement-32
#9
Liang Zhu, Qiu Zhao
The aim of the present study was to explore the function of response gene to complement 32 (RGC-32) in hypoxia-induced epithelial-mesenchymal transition (EMT) in pancreatic cancer. Three kinds of hypoxia-inducible factor 1α (HIF-1α) small interfering (si)RNA were synthesized and the different effects on the expression of HIF-1α were detected by western blotting. In human pancreatic cancer BxPC-3 cells, HIF-1α levels were diminished using siRNA transfection or HIF-1α inhibitor pretreatment, and the expression levels of RGC-32 and EMT-associated proteins were analyzed using reverse transcription-quantitative polymerase chain reaction and western blotting...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28802012/the-inhibitory-effect-of-5-7-dmf-on-pancreatic-sphere-forming-cell-function-mediated-by-foxm1-gene-expression
#10
Deyu Zeng, Jian Ma, Rongrong Li, Jianfeng Yang, Xianli Yin
Pancreatic cancer is one of the major human malignant tumors severely endangering human health and life with high mortality due to the concealment of early symptoms and lack of effective therapies during advanced stages. The identification of pancreatic cancer stem cell functions has been as important strategy for understanding of pancreatic cancer biology and novel drug and therapy development. In the present study, we successfully isolated the pancreatic sphere-forming cells from pancreatic cancer cell line PANC-1 by sphere-forming method and we found that the sphere-forming ability and the cell migration rate of pancreatic sphere-forming cells were significantly inhibited by 5,7-DMF treatment, which was supported by the corresponding changes of several EMT biomarkers after being treated with 5,7-DMF...
August 12, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28783244/loss-of-ampk-activation-promotes-the-invasion-and-metastasis-of-pancreatic-cancer-through-an-hsf1-dependent-pathway
#11
Ke Chen, Weikun Qian, Jie Li, Zhengdong Jiang, Liang Cheng, Bin Yan, Junyu Cao, Liankang Sun, Cancan Zhou, Meng Lei, Wanxing Duan, Jiguang Ma, Qingyong Ma, Zhenhua Ma
Pancreatic ductal adenocarcinoma (PDAC) is a lethal malignancy with a mortality rate that closely parallels its incidence rate, and a better understanding of the molecular and cellular mechanisms associated with the invasion and distant metastasis is required. Heat shock factor 1 (HSF1) is a very highly conserved factor in eukaryotes that regulates the protective heat shock response. Here, we show that HSF1 is abnormally activated in pancreatic cancer. The knockdown of HSF1 impaired the invasion and migration and epithelial-mesenchymal transition (EMT) of pancreatic cancer cells in vitro; however, the upregulation of HSF1 showed the opposite effects...
August 7, 2017: Molecular Oncology
https://www.readbyqxmd.com/read/28723647/set-contributes-to-the-epithelial-mesenchymal-transition-of-pancreatic-cancer
#12
Hardik R Mody, Sau Wai Hung, Kineta Naidu, Haesung Lee, Caitlin A Gilbert, Toan Thanh Hoang, Rakesh K Pathak, Radhika Manoharan, Shanmugam Muruganandan, Rajgopal Govindarajan
Pancreatic cancer has a devastating prognosis due to 80-90% of diagnostic cases occurring when metastasis has already presented. Activation of the epithelial-mesenchymal transition (EMT) is a prerequisite for metastasis because it allows for the dissemination of tumor cells to blood stream and secondary organs. Here, we sought to determine the role of SET oncoprotein, an endogenous inhibitor of PP2A, in EMT and pancreatic tumor progression. Among the two major isoforms of SET (isoform 1 and isoform 2), higher protein levels of SET isoform 2 were identified in aggressive pancreatic cancer cell lines...
July 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28719220/egfr-targeted-cationic-polymeric-mixed-micelles-for-codelivery-of-gemcitabine-and-mir-205-for-treating-advanced-pancreatic-cancer
#13
Goutam Mondal, Saud Almawash, Amit Kumar Chaudhary, Ram I Mahato
Gemcitabine (GEM), a first-line chemotherapy for pancreatic cancer undergoes rapid metabolism and develops chemoresistance after repeated administration. We previously demonstrated that the combination of GEM and miR-205 provides an effective therapeutic strategy to sensitize GEM-resistant pancreatic cancer cells. Since epidermal growth factor receptor (EGFR) is overexpressed in pancreatic cancer cells, in this study, we aimed to deliver mixed micelles containing GEM and miR-205 decorated with EGFR-targeting cetuximab (C225) monoclonal antibody for targeted therapy...
July 31, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28711919/silencing-igfbp-2-decreases-pancreatic-cancer-metastasis-and-enhances-chemotherapeutic-sensitivity
#14
Huan Liu, Le Li, Hua Chen, Rui Kong, Shangha Pan, Jisheng Hu, Yongwei Wang, Yilong Li, Bei Sun
Pancreatic cancer has remained one of the most devastating and lethal malignancies characterized by local invasion, distant metastasis and a high degree of chemoresistance. Insulin-like growth factor binding protein 2 (IGFBP-2) is a member of the IGFBP family of proteins, and it is highly expressed in pancreatic cancer patients' serum and tumor tissues. IGFBP-2 also mediates tumor cell growth, invasion and resistance, while the mechanisms remain unclear. In this study, we sought to determine the impact of IGFBP-2 expression on pancreatic cancer tumorigenesis and metastasis in vitro and in vivo...
June 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28703793/linc-dync2h1-4-promotes-emt-and-csc-phenotypes-by-acting-as-a-sponge-of-mir-145-in-pancreatic-cancer-cells
#15
Yuran Gao, Zhicheng Zhang, Kai Li, Liying Gong, Qingzhu Yang, Xuemei Huang, Chengcheng Hong, Mingfeng Ding, Huanjie Yang
The acquisition of epithelial-mesenchymal transition (EMT) and/or existence of a sub-population of cancer stem-like cells (CSC) are associated with malignant behavior and chemoresistance. To identify which factor could promote EMT and CSC formation and uncover the mechanistic role of such factor is important for novel and targeted therapies. In the present study, we found that the long intergenic non-coding RNA linc-DYNC2H1-4 was upregulated in pancreatic cancer cell line BxPC-3-Gem with acquired gemcitabine resistance...
July 13, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28697764/long-non-coding-rna-linc00673-regulated-non-small-cell-lung-cancer-proliferation-migration-invasion-and-epithelial-mesenchymal-transition-by-sponging-mir-150-5p
#16
Wei Lu, Honghe Zhang, Yuequn Niu, Yongfeng Wu, Wenjie Sun, Hongyi Li, Jianlu Kong, Kefeng Ding, Han-Ming Shen, Han Wu, Dajing Xia, Yihua Wu
BACKGROUND: The function of a new long non-coding RNA linc00673 remains unclear. While identified as an oncogenic player in non-small cell lung cancer (NSCLC), linc00673 was found to be anti-oncogenic in pancreatic ductal adenocarcinoma (PDAC). However whether linc00673 regulated malignancy and epithelial mesenchymal transition (EMT) has not been characterized. METHODS: Cell proliferation was assessed using CCK-8 and EdU assays, and cell migration and invasion were assessed using scratch assays and transwell invasion assays...
July 11, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/28685847/microrna-300-promotes-apoptosis-and-inhibits-proliferation-migration-invasion-and-epithelial-mesenchymal-transition-via-the-wnt-%C3%AE-catenin-signaling-pathway-by-targeting-cul4b-in-pancreatic-cancer-cells
#17
Jia-Qiang Zhang, Shi Chen, Jiang-Ning Gu, Yi Zhu, Qian Zhan, Dong-Feng Cheng, Hao Chen, Xia-Xing Deng, Bai-Yong Shen, Cheng-Hong Peng
The study aims to verify the hypothesis that up-regulation of microRNA-300 (miR-300) targeting CUL4B promotes apoptosis and suppresses proliferation, migration, invasion, and epithelial-mesenchymal transition (EMT) of pancreatic cancer cells by regulating the Wnt/β-catenin signaling pathway. Pancreatic cancer tissues and adjacent tissues were collected from 110 pancreatic cancer patients. Expression of miR-300, CUL4B, Wnt, β-catenin, E-cadherin, N-cadherin, Snail, GSK-3β, and CyclinD1 were detected using qRT-PCR and Western blot...
July 7, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28682339/upholding-a-role-for-emt-in-pancreatic-cancer-metastasis
#18
Nicole M Aiello, Thomas Brabletz, Yibin Kang, M Angela Nieto, Robert A Weinberg, Ben Z Stanger
No abstract text is available yet for this article.
July 5, 2017: Nature
https://www.readbyqxmd.com/read/28671675/matrix-stiffness-induces-epithelial-mesenchymal-transition-and-promotes-chemoresistance-in-pancreatic-cancer-cells
#19
A J Rice, E Cortes, D Lachowski, B C H Cheung, S A Karim, J P Morton, A Del Río Hernández
Increased matrix rigidity associated with the fibrotic reaction is documented to stimulate intracellular signalling pathways that promote cancer cell survival and tumour growth. Pancreatic cancer is one of the stiffest of all human solid carcinomas and is characterised by a remarkable desmoplastic reaction. Here we use mouse models, genetically engineered to recapitulate human pancreatic cancer, and several pancreatic cancer cell lines as a model to investigate the effect of matrix stiffness in epithelial-mesenchymal transition (EMT) and resistance to chemotherapeutics...
July 3, 2017: Oncogenesis
https://www.readbyqxmd.com/read/28638102/mir-509-5p-and-mir-1243-increase-the-sensitivity-to-gemcitabine-by-inhibiting-epithelial-mesenchymal-transition-in-pancreatic-cancer
#20
Hidekazu Hiramoto, Tomoki Muramatsu, Daisuke Ichikawa, Kousuke Tanimoto, Satoru Yasukawa, Eigo Otsuji, Johji Inazawa
The epithelial-mesenchymal transition (EMT) contributes to various processes in cancer progression, such as metastasis and drug resistance. Since we have already established a cell-based reporter system for identifying EMT-suppressive microRNAs (miRNAs) in the pancreatic cancer cell line Panc1, we performed a function-based screening assay by combining this reporter system and a miRNA library composed of 1,090 miRNAs. As a result, we identified miR-509-5p and miR-1243 as EMT-suppressive miRNAs, although the mechanisms for EMT-suppression induced by these miRNAs have yet to be clarified...
June 21, 2017: Scientific Reports
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