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https://www.readbyqxmd.com/read/29161592/tumor-suppressor-inactivation-of-gdf11-occurs-by-precursor-sequestration-in-triple-negative-breast-cancer
#1
Sameer S Bajikar, Chun-Chao Wang, Michael A Borten, Elizabeth J Pereira, Kristen A Atkins, Kevin A Janes
Triple-negative breast cancer (TNBC) is an aggressive and heterogeneous carcinoma in which various tumor-suppressor genes are lost by mutation, deletion, or silencing. Here we report a tumor-suppressive mode of action for growth-differentiation factor 11 (GDF11) and an unusual mechanism of its inactivation in TNBC. GDF11 promotes an epithelial, anti-invasive phenotype in 3D triple-negative cultures and intraductal xenografts by sustaining expression of E-cadherin and inhibitor of differentiation 2 (ID2). Surprisingly, clinical TNBCs retain the GDF11 locus and expression of the protein itself...
November 20, 2017: Developmental Cell
https://www.readbyqxmd.com/read/29159771/cldn6-enhances-chemoresistance-to-adm-via-af-6-erks-pathway-in-tnbc-cell-line-mdamb231
#2
Minlan Yang, Yanru Li, Yang Ruan, Yan Lu, Dongjing Lin, Yinping Xie, Bing Dong, Qihua Dang, Chengshi Quan
Claudin-6 (CLDN6), a critical tight junction protein acting as a tumor suppressor in breast cancer, is also considered to be a stem cell marker. Triple-negative breast cancer (TNBC) is a subtype of claudin-low and stem cell-like breast cancer which is chemoresistant to multiple anti-cancer drugs. The aim of our study was to determine whether CLDN6 plays a role in chemoresistance of TNBC. We found that overexpression of CLDN6 in TNBC cell line MDAMB231 significantly inhibited cell growth, migration, and invasion...
November 20, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/29158807/the-prognostic-value-of-peripheral-benzodiazepine-receptor-in-patients-with-esophageal-squamous-cell-carcinoma
#3
You-Fang Chen, Jing-Dun Xie, Yu-Chuan Jiang, Dong-Tai Chen, Jia-Hao Pan, Yong-Hua Chen, Yun-Fei Yuan, Zhe-Sheng Wen, Wei-An Zeng
Background: The peripheral benzodiazepine receptor (PBR) has previously been reported as an oncogene in prostate, breast and colorectal cancers, but its prognostic value, biological behavior and function in esophageal squamous cell carcinoma (ESCC) has not been investigated. Methods: qRT-PCR, western blotting and immunohistochemistry (IHC) were used to detect PBR expression in ESCC and matched non-cancerous tissues. Based on all of the significantly independent factors, a nomogram was established to predict the prognosis of ESCC patients...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/29158781/hypothalamic-beta-endorphin-neurons-suppress-preneoplastic-and-neoplastic-lesions-development-in-1-2-dimethylhydrazine-induced-rat-colon-cancer-model
#4
Sengottuvelan Murugan, Yatee Dave, Ankush Rakhit, Dipak K Sarkar
In recent years, experimental studies demonstrated negative impacts of impaired body stress response on colonic pathologies. In this study, we tested if reducing body stress response by the use of β-endorphin (BEP) neuronal transplants in the hypothalamus suppresses pre-neoplastic and neoplastic lesions. Colon cancer was induced by injecting 1,2-dimethylhydrazine (DMH) for sixteen weeks in Sprague Dawley rats with BEP neuron transplants or control neuron transplants, and their colonic histopathologies, colon tissue levels of pro-inflammatory cytokines and epithelial-mesenchymal transition (EMT) proteins and splenic levels of cytotoxic proteins were measured...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/29158549/hypoxia-inducible-factor-1%C3%AE-mediates-the-profibrotic-effect-of-albumin-in-renal-tubular-cells
#5
Junping Hu, Weili Wang, Fan Zhang, Pin-Lan Li, Krishna M Boini, Fan Yi, Ningjun Li
Proteinuria is closely associated with the progression of chronic kidney diseases (CKD) by producing renal tubulointerstitial fibrosis. Over-activation of hypoxia inducible factor (HIF)-1α has been implicated in the progression of CKD. The present study tested the hypothesis that HIF-1α mediates albumin-induced profibrotic effect in cultured renal proximal tubular cells. Incubation of the cells with albumin (40 μg/ml) for 72 hrs significantly increased the protein levels of HIF-1α, tissue inhibitor of metalloproteinase (TIMP)-1 and collagen-I, which were blocked by HIF-1α shRNA...
November 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29158087/fabp4-induces-asthmatic-airway-epithelial-barrier-dysfunction-via-ros-activated-foxm1
#6
Gaohui Wu, Liteng Yang, Yi Xu, Xiaohong Jiang, Xiaomin Jiang, Lisha Huang, Ling Mao, Shaoxi Cai
Functional abnormal airway epithelial cells, along with activated inflammatory cells, resulting in chronic airway inflammation, are considered as the characteristic of asthma. Fatty Acid Binding Protein 4 (FABP4) takes part in glucose and lipid homeostasis, and also have an important role in allergic airway inflammation. However, whether FABP4 influence barrier function of airway epithelial cells is unknown. In vivo, a HDM-induced murine model of asthma was obtained to assessed airway inflammation and protein expression of E-cadherin and Forkhead Box M1 (FoxM1)...
November 17, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29157829/sulfated-galactans-from-the-red-seaweed-gracilaria-fisheri-exerts-anti-migration-effect-on-cholangiocarcinoma-cells
#7
Thannicha Sae-Lao, Natthanej Luplertlop, Tavan Janvilisri, Rutaiwan Tohtong, David O Bates, Kanokpan Wongprasert
BACKGROUND: Seaweeds have a long history of use in Asian countries as functional foods, medicinal herbs, and the treatment of cancer. Polysaccharides from various seaweeds have shown anti-tumor activity. Cholangiocarcinoma (CCA), often with metastatic disease, is highly prevalent in Thailand as a consequence of liver fluke infection. Recently, we extracted sulfated galactans (SG) from Gracilaria fisheri (G. fisheri), a south east Asian seaweed, and found it exhibited anti-proliferation effect on CCA cells...
December 1, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29157176/separation-of-cell-survival-growth-migration-and-mesenchymal-transdifferentiation-effects-of-fibroblast-secretome-on-tumor-cells-of-head-and-neck-squamous-cell-carcinoma
#8
Veronika Maria Metzler, Christian Pritz, Anna Riml, Angela Romani, Raphaela Tuertscher, Teresa Steinbichler, Daniel Dejaco, Herbert Riechelmann, József Dudás
Fibroblasts play a central role in tumor invasion, recurrence, and metastasis in head and neck squamous cell carcinoma. The aim of this study was to investigate the influence of tumor cell self-produced factors and paracrine fibroblast-secreted factors in comparison to indirect co-culture on cancer cell survival, growth, migration, and epithelial-mesenchymal transition using the cell lines SCC-25 and human gingival fibroblasts. Thereby, we particularly focused on the participation of the fibroblast-secreted transforming growth factor beta-1...
November 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/29156697/exploring-brusatol-as-a-new-anti-pancreatic-cancer-adjuvant-biological-evaluation-and-mechanistic-studies
#9
Zheng Lu, Zheng-Quan Lai, Albert W N Leung, Po Sing Leung, Zhao-Shen Li, Zhi-Xiu Lin
Pancreatic cancer is highly resistant to chemotherapeutic agents and is known to have a poor prognosis. The development of new therapeutic entities is badly needed for this deadly malignancy. In this study, we demonstrated for the first time that brusatol, a natural quassinoid isolated from a Chinese herbal medicine named Bruceae Fructus, possessed potent cytotoxic effect against different pancreatic adenocarcinoma cell lines. Its anti-pancreatic cancer effect was comparable to that of the first-line chemotherapeutic agents such as gemcitabine and 5-fluorouracil, with a more favorable safety profile...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156525/esomeprazole-ameliorates-ccl4-induced-liver-fibrosis-in-rats-via-modulating-oxidative-stress-inflammatory-fibrogenic-and-apoptotic-markers
#10
Heba M Eltahir, Maiiada H Nazmy
BACKGROUND: Hepatic fibrosis is a major health problem that requires further medical attention. Proton pump inhibitors are proven to possess other therapeutic potentials apart of their acid anti-secretory actions. AIM OF THE WORK: To test possible anti-fibrotic effect of esomeprazole magnesium trihydrate in management of liver fibrosis compared to silymarin, the well-known hepatoprotective agent. MATERIALS & METHODS: 40 male albino rats were divided into 4 groups: normal control group; CCl4-treated group (1 mL/kg 40% CCl4, diluted in olive oil) I...
November 15, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29155301/matrine-inhibiting-pancreatic-cells-epithelial-mesenchymal-transition-and-invasion-through-ros-nf-%C3%AE%C2%BAb-mmps-pathway
#11
Minna Huang, Wen Xin
AIMS: Matrine has demonstrated an exclusive anti-tumor effect, including inhibiting cancer cells proliferation and inducing cancer cells apoptosis and autophagy. Whether it can inhibit cancer cells invasion is remain obscure. MAIN METHODS: The Panc-1 cells were cultured with matrine, NAC and methanol, wound healing assay and transwell invasion assay were applied to detect the migration and invasion ability. The expression of MMP-2 and MMP-9 were assessed, as well as the Epithelial-Mesenchymal Transition marker...
November 16, 2017: Life Sciences
https://www.readbyqxmd.com/read/29154903/in-vitro-mesenchymal-epithelial-transition-in-nih3t3-fibroblasts-results-in-onset-of-low-dose-radiation-hypersensitivity-coupled-with-attenuated-connexin-43-response
#12
Ankit Mathur, Ashish Kumar, Bincy Babu, Sudhir Chandna
BACKGROUND: Mesenchymal-to-epithelial transition (MET) is associated with altered cell adhesion patterns. Independent studies showed that cellular adhesion regulates low-dose hyper-radiosensitivity (HRS), a phenomenon reported widely in tumour cells. Therefore, present study aimed to investigate whether MET and associated cellular adhesion alterations affect cellular radiosensitivity. METHODS: We established multiple stages of MET by in vitro transformation of NIH3T3 mouse embryonic fibroblasts...
November 14, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29151976/aqueous-huaier-extract-suppresses-gastric-cancer-metastasis-and-epithelial-to-mesenchymal-transition-by-targeting-twist
#13
Zhiyuan Xu, Guowei Zheng, Yiping Wang, Chunli Zhang, Jianfa Yu, Fei Teng, Hang Lv, Xiangdong Cheng
Trametes robiniophila Murr. (Huaier) is a widely used anti-cancer agent in China. Strong evidence for the anti-proliferative activity of Huaier has been reported; however, its anti-metastatic potential against gastric cancer (GC) as well as its underlying mechanism of action are unknown. Here, we show that treatment with an aqueous Huaier extract over a range of concentrations significantly suppressed both the invasiveness and migratory ability of GC cells. Huaier could also partly reverse the epithelial-mesenchymal transition (EMT), as characterized by increased expression of the epithelial marker E-cadherin and decreased expression of the mesenchymal markers N-cadherin and vimentin...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/29151941/zeb1-promotes-oxaliplatin-resistance-through-the-induction-of-epithelial-mesenchymal-transition-in-colon-cancer-cells
#14
Cao Guo, Junli Ma, Ganlu Deng, Yanlin Qu, Ling Yin, Yiyi Li, Ying Han, Changjing Cai, Hong Shen, Shan Zeng
Background: Oxaliplatin (OXA) chemotherapy is widely used in the clinical treatment of colon cancer. However, chemo-resistance is still a barrier to effective chemotherapy in cases of colon cancer. Accumulated evidence suggests that the epithelial mesenchymal transition (EMT) may be a critical factor in chemo-sensitivity. The present study investigated the effects of Zinc finger E-box binding homeobox 1 (ZEB1) on OXA-sensitivity in colon cancer cells. Method: ZEB1expression and its correlation with clinicopathological characteristics were analyzed using tumor tissue from an independent cohort consisting of 118 colon cancer (CC) patients who receiving OXA-based chemotherapy...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/29151910/role-and-importance-of-the-expression-of-transcription-factor-foxc2-in-cervical-cancer
#15
Jing Wang, Xiujuan Yue
The aim of the present study was to investigate the relationship between the expression of transcription factor forkhead box C2 (FOXC2) and the clinical features of cervical cancer. A total of 66 patients with cervical cancer, 42 patients with cervical intraepithelial neoplasia (CIN) and 25 patients with cervical inflammation were enrolled. The positive expression rates and expression levels of mRNA of FOXC2, E-cadherin, N-cadherin, vascular endothelial growth factor (VEGF), stromal cell-derived factor-1 (SDF-1), Notch protein and lymphatic vessel endothelial hyaluronan receptor-1 (LYVE-1) in cervical tissues were detected using immunohistochemistry and RT-PCR...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29146722/the-notch4-hey1-pathway-induces-epithelial-mesenchymal-transition-in-head-and-neck-squamous-cell-carcinoma
#16
Takahito Fukusumi, Theresa Guo, Akihiro Sakai, Mizuo Ando, Shuling Ren, Sunny Haft, Chao Liu, Panomwat Amornphimoltham, J Silvio Gutkind, Joseph Califano
BACKGROUND: Recently, several comprehensive genomic analyses demonstrated NOTCH1 and NOTCH3 mutations in head and neck squamous cell carcinoma (HNSCC) in approximately 20% of cases. Similar to other types of cancers, these studies also indicate that the NOTCH pathway is closely related to HNSCC progression. However, the role of NOTCH4 in HNSCC is less well understood. METHODS: We analyzed NOTCH4 pathway and downstream gene expression in the TCGA data set. To explore the functional role of NOTCH4, we performed in vitro proliferation, cisplatin viability, apoptosis, and cell cycle assays...
November 16, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29146185/biomarker-identification-for-statin-sensitivity-of-cancer-cell-lines
#17
Vineet K Raghu, Colin H Beckwitt, Katsuhiko Warita, Alan Wells, Panayiotis V Benos, Zoltán N Oltvai
Statins are potent cholesterol reducing drugs that have been shown to reduce tumor cell proliferation in vitro and tumor growth in animal models. Moreover, retrospective human cohort studies demonstrated decreased cancer-specific mortality in patients taking statins. We previously implicated membrane E-cadherin expression as both a marker and mechanism for resistance to atorvastatin-mediated growth suppression of cancer cells; however, a transcriptome-profile-based biomarker signature for statin sensitivity has not yet been reported...
November 13, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29146183/d-rhamnose-%C3%AE-hederin-inhibits-migration-and-invasion-of-human-breast-cancer-cell-line-mda-mb-231
#18
Lin Cheng, Tian-Song Xia, Liang Shi, Lingyun Xu, Weixian Chen, Yulan Zhu, Qiang Ding
Many natural products have been shown to have inhibitory effects on the metastatic process of various cancers including breast cancer. An active triterpenoid saponin D Rhamnose β-hederin (DRβ-H) from Clematis ganpiniana, has been known induce the apoptosis of breast cancer cells, but the effect of DRβ-H on the metastasis of breast cancer cells is largely unknown. In this study, we demonstrated that a non-cytotoxic concentration of DRβ-H markedly suppressed wound healing migration, migration through the chamber and invasion through the matrigel...
November 13, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29145632/clinical-significance-of-cd13-and-epithelial-mesenchymal-transition-emt-markers-in-hepatocellular-carcinoma
#19
Chihiro Yamanaka, Hiroshi Wada, Hidetoshi Eguchi, Hisanori Hatano, Kunihito Gotoh, Takehiro Noda, Daisaku Yamada, Tadafumi Asaoka, Koichi Kawamoto, Hiroaki Nagano, Yuichiro Doki, Masaki Mori
Background & Aims: To improve prognosis in patients with hepatocellular carcinoma (HCC), the molecular mechanisms of tumor thrombus formation and metastasis must be clarified. The epithelial-mesenchymal transition (EMT) and cancer stem cells (CSCs) play crucial roles in tumor invasion and metastasis. This study aimed to reveal the clinical significance of the expression of the functional CSC marker, CD13, and investigate the correlation between CD13 expression and two EMT markers, E-cadherin and vimentin...
November 14, 2017: Japanese Journal of Clinical Oncology
https://www.readbyqxmd.com/read/29143117/the-expression-of-ve-cadherin-in-breast-cancer-cells-modulates-cell-dynamics-as-a-function-of-tumor-differentiation-and-promotes-tumor-endothelial-cell-interactions
#20
Maryam Rezaei, Jiahui Cao, Katrin Friedrich, Björn Kemper, Oliver Brendel, Marianne Grosser, Manuela Adrian, Gustavo Baretton, Georg Breier, Hans-Joachim Schnittler
The cadherin switch has profound consequences on cancer invasion and metastasis. The endothelial-specific vascular endothelial cadherin (VE-cadherin) has been demonstrated in diverse cancer types including breast cancer and is supposed to modulate tumor progression and metastasis, but underlying mechanisms need to be better understood. First, we evaluated VE-cadherin expression by tissue microarray in 392 cases of breast cancer tumors and found a diverse expression and distribution of VE-cadherin. Experimental expression of fluorescence-tagged VE-cadherin (VE-EGFP) in undifferentiated, fibroblastoid and E-cadherin-negative MDA-231 (MDA-VE-EGFP) as well as in differentiated E-cadherin-positive MCF-7 human breast cancer cell lines (MCF-VE-EGFP), respectively, displayed differentiation-dependent functional differences...
November 15, 2017: Histochemistry and Cell Biology
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