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Stat 3 IL6 cancer

R Ahmad, B Kumar, Z Chen, X Chen, D Müller, S M Lele, M K Washington, S K Batra, P Dhawan, A B Singh
The hyperactivated Wnt/β-catenin signaling acts as a switch to induce epithelial to mesenchymal transition and promote colorectal cancer. However, due to its essential role in gut homeostasis, therapeutic targeting of this pathway has proven challenging. Additionally, IL-6/Stat-3 signaling, activated by microbial translocation through the dysregulated mucosal barrier in colon adenomas, facilitates the adenoma to adenocarcinomas transition. However, inter-dependence between these signaling pathways and key mucosal barrier components in regulating colon tumorigenesis and cancer progression remains unclear...
November 23, 2017: Oncogene
Iryna Kolosenko, Yasmin Yu, Sander Busker, Matheus Dyczynski, Jianping Liu, Martin Haraldsson, Caroline Palm Apergi, Thomas Helleday, Katja Pokrovskaja Tamm, Brent D G Page, Dan Grander
Activation of Signal Transducer and Activator of Transcription 3 (STAT3) has been linked to several processes that are critical for oncogenic transformation, cancer progression, cancer cell proliferation, survival, drug resistance and metastasis. Inhibition of STAT3 signaling has shown a striking ability to inhibit cancer cell growth and therefore, STAT3 has become a promising target for anti-cancer drug development. The aim of this study was to identify novel inhibitors of STAT-dependent gene transcription...
2017: PloS One
Le Zhang, Yao Xue, Beini Jiang, Costas Strouthos, Zhenfeng Duan, Yukun Wu, Jing Su, Xiaobo Zhou
This research is developed to simulate ovarian cancer progression with signal transducers and activators of the transcription 3 (STAT 3) pathway. The main focus is on studying how the STAT 3 pathway affects the cancer cells' biomechanical phenotype under the stimulation of the interleukin-6 (IL-6) cytokine and various well-known microscopic factors. The simulated results agreed with recent experimental evidence that ovarian cancer cells with a stimulated STAT 3 pathway have high survival rates and drug resistance...
2014: International Journal of Data Mining and Bioinformatics
Matthias Ernst, Stefan Thiem, Paul M Nguyen, Moritz Eissmann, Tracy L Putoczki
A contiguous intestinal epithelial barrier safeguards against aberrant activation of the immune system and therefore requires molecular mechanisms that ensure effective wound-healing responses. During this processes cytokine-producing myeloid cells serve as rheostats that link the degree of wounding and local inflammation to the epithelial repair response. Likewise, intestinal inflammation is an important factor by which the microenvironment promotes tumorigenesis and the progression of established cancers by facilitating neoplastic cell survival and proliferation...
February 2014: Seminars in Immunology
Martha L Slattery, Abbie Lundgreen, Susan A Kadlubar, Kristina L Bondurant, Roger K Wolff
The Janus kinase (JAK)/signal transducer and activator of transcription (STAT) signaling pathway is involved in immune function and cell growth. We evaluated the association between genetic variation in JAK1 (10 SNPs), JAK2 (9 SNPs), TYK2 (5 SNPs), suppressors of cytokine signaling (SOCS)1 (2 SNPs), SOCS2 (2 SNPs), STAT1 (16 SNPs), STAT2 (2 SNPs), STAT3 (6 SNPs), STAT4 (21 SNPs), STAT5A (2 SNPs), STAT5B (3 SNPs), STAT6 (4 SNPs) with risk of colorectal cancer. We used data from population-based case-control studies (colon cancer n = 1555 cases, 1,956 controls; rectal cancer n = 754 cases, 959 controls)...
February 2013: Molecular Carcinogenesis
Leda Raptis, Rozanne Arulanandam, Mulu Geletu, James Turkson
The signal transducer and activator of transcription-3 (Stat3) is a member of the STAT family of cytoplasmic transcription factors. Overactivation of Stat3 is detected with high frequency in human cancer and is considered a molecular abnormality that supports the tumor phenotype. Despite concerted investigative efforts, the molecular mechanisms leading to the aberrant Stat3 activation and Stat3-mediated transformation and tumorigenesis are still not clearly defined. Recent evidence reveals a crosstalk close relationship between Stat3 signaling and members of the Rho family of small GTPases, including Rac1, Cdc42 and RhoA...
August 1, 2011: Experimental Cell Research
M Colomiere, A C Ward, C Riley, M K Trenerry, D Cameron-Smith, J Findlay, L Ackland, N Ahmed
Epidermal growth factor receptor (EGFR) is overexpressed in ovarian carcinomas, with direct or indirect activation of EGFR able to trigger tumour growth. We demonstrate significant activation of both signal transducer and activator of transcription (STAT)3 and its upstream activator Janus kinase (JAK)2, in high-grade ovarian carcinomas compared with normal ovaries and benign tumours. The association between STAT3 activation and migratory phenotype of ovarian cancer cells was investigated by EGF-induced epithelial-mesenchymal transition (EMT) in OVCA 433 and SKOV3 ovarian cancer cell lines...
January 13, 2009: British Journal of Cancer
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