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Cancer: Breast Carcinoma

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Total 244 results found since Jan 2013.

miR-200b induces cell cycle arrest and represses cell growth in esophageal squamous cell carcinoma
miR-200b is a pleiotropically acting microRNA in cancer progression, representing an attractive therapeutic target. We previously identified miR-200b as an invasiveness repressor in esophageal squamous cell carcinoma (ESCC), whereas further understanding is warranted to establish it as a therapeutic target. Here, we show that miR-200b mitigates ESCC cell growth by inducing G2-phase cell cycle arrest and apoptosis. The expression/activation of multiple key cell cycle regulators such as CDK1, CDK2, CDK4 and Cyclin B, and the Wnt/β-Catenin signaling are modulated by miR-200b. We identified CDK2 and PAF (PCNA-associated f...
Source: Carcinogenesis - August 31, 2016 Category: Cancer & Oncology Authors: Zhang, H.-F., Alshareef, A., Wu, C., Jiao, J.-W., Sorensen, P. H., Lai, R., Xu, L.-Y., Li, E.-M. Tags: Original Manuscript Source Type: research

Validation of a network-based strategy for the optimization of combinatorial target selection in breast cancer therapy: siRNA knockdown of network targets in MDA-MB-231 cells as an in vitro model for inhibition of tumor development.
Authors: Tilli TM, Carels N, Tuszynski JA, Pasdar M Abstract Network-based strategies provided by systems biology are attractive tools for cancer therapy. Modulation of cancer networks by anticancer drugs may alter the response of malignant cells and/or drive network re-organization into the inhibition of cancer progression. Previously, using systems biology approach and cancer signaling networks, we identified top-5 highly expressed and connected proteins (HSP90AB1, CSNK2B, TK1, YWHAB and VIM) in the invasive MDA-MB-231 breast cancer cell line. Here, we have knocked down the expression of these proteins, individua...
Source: Oncotarget - August 18, 2016 Category: Cancer & Oncology Tags: Oncotarget Source Type: research

Dimerization of EGFR and HER2 induces breast cancer cell motility through STAT1-dependent ACTA2 induction.
Authors: Jeon M, You D, Bae SY, Kim SW, Nam SJ, Kim HH, Kim S, Lee JE Abstract The dimerization of EGFR and HER2 is associated with poor prognosis such as induction of tumor growth and cell invasion compared to when EGFR remains as a homodimer. However, the mechanism for events after dimerization in breast cancer models is not clear. We found that expressions of alpha-smooth muscle actin (ACTA2) and signal transducer and activator of transcription 1 (STAT1) significantly increased with transient or stable overexpression of HER2 in EGFR-positive breast cancer cells. ACTA2 and STAT1 expression was also increased in H...
Source: Oncotarget - July 30, 2016 Category: Cancer & Oncology Tags: Oncotarget Source Type: research

Abstract C05: Pulmonary laminin 332 in tumor cell migration and breast cancer survival
Metastasis to the lung often leads to the demise of the patient, thus a greater understanding of the process might lead to strategies for better cancer control. Tumor cell metastatic ability is determined by both intrinsic properties of tumor cells and contributions from the microenvironment. The goal of this study was to determine the role of the extracellular matrix protein laminin 332 (LN332) in breast cancer progression. Because tumor cell motility is a requirement for metastasis, we hypothesize that lung tissue harbors substances that induce tumor cell migration. In order to better characterize the interaction of brea...
Source: Cancer Research - July 27, 2016 Category: Cancer & Oncology Authors: Carpenter, P. M., Sivadas, P., Ziogas, A., Anton-Culver, H. Tags: Tumor Microenvironment and Metastasis Source Type: research

MicroRNA-497 inhibits the proliferation, migration and invasion of human bladder transitional cell carcinoma cells by targeting E2F3.
Authors: Zhang Y, Zhang Z, Li Z, Gong D, Zhan B, Man X, Kong C Abstract Accumulating evidence indicates that microRNAs (miRNAs) play critical roles in regulating cellular processes, such as cell growth and apoptosis, as well as cancer progression and metastasis. Low expression of miR-497 has been observed in breast, colorectal and cervical cancers. Human bladder transitional cell carcinoma (BTCC) progression typically follows a complex cascade from primary malignancy to distant metastasis, but whether the aberrant expression of miR-497 in BTCC is associated with malignancy, metastasis or prognosis remains unknown. ...
Source: Oncology Reports - July 21, 2016 Category: Cancer & Oncology Tags: Oncol Rep Source Type: research

TACC2 (transforming acidic coiled‐coil protein 2) in breast carcinoma as a potent prognostic predictor associated with cell proliferation
Abstract Transforming acidic coiled‐coil protein 2 (TACC2) belongs to TACC family proteins and involved in a variety of cellular processes through interactions with some molecules involved in centrosomes/microtubules dynamics. Mounting evidence suggests that TACCs is implicated in the progression of some human malignancies, but significance of TACC2 protein in breast carcinoma is still unknown. Therefore, in this study, we examined the clinical significance of TACC2 in breast carcinoma and biological functions by immunohistochemistry and in vitro experiments. Immunohistochemistry for TACC2 was performed in 154 cases of i...
Source: Cancer Medicine - June 21, 2016 Category: Cancer & Oncology Authors: Yoshiaki Onodera, Kiyoshi Takagi, Yasuhiro Miki, Ken‐ichi Takayama, Yukiko Shibahara, Mika Watanabe, Takanori Ishida, Satoshi Inoue, Hironobu Sasano, Takashi Suzuki Tags: Original Research Source Type: research

TACC2 (transforming acidic coiled ‐coil protein 2) in breast carcinoma as a potent prognostic predictor associated with cell proliferation
Abstract Transforming acidic coiled‐coil protein 2 (TACC2) belongs to TACC family proteins and involved in a variety of cellular processes through interactions with some molecules involved in centrosomes/microtubules dynamics. Mounting evidence suggests that TACCs is implicated in the progression of some human malignancies, but significance of TACC2 protein in breast carcinoma is still unknown. Therefore, in this study, we examined the clinical significance of TACC2 in breast carcinoma and biological functions by immunohistochemistry and in vitro experiments. Immunohistochemistry for TACC2 was performed in 154 cases of i...
Source: Cancer Medicine - June 21, 2016 Category: Cancer & Oncology Authors: Yoshiaki Onodera, Kiyoshi Takagi, Yasuhiro Miki, Ken ‐ichi Takayama, Yukiko Shibahara, Mika Watanabe, Takanori Ishida, Satoshi Inoue, Hironobu Sasano, Takashi Suzuki Tags: Original Research Source Type: research

Wnt-beta-catenin pathway signals metastasis-associated tumor cell phenotypes in triple negative breast cancers.
We present the first evidence showing a direct functional relationship between WP activation and integrin-dependent MA-phenotypes. By proving the functional relationship between WP activation and MA-phenotypes, our data mechanistically explains (1) why different components of WP are upregulated in TNBC, (2) how WP activation is associated with metastasis and (3) how integrin-dependent MA-phenotypes can be regulated by mitigating the WP. PMID: 27281609 [PubMed - as supplied by publisher]
Source: Oncotarget - June 11, 2016 Category: Cancer & Oncology Tags: Oncotarget Source Type: research

Dysregulation of junctional adhesion molecule-A via p63/GATA-3 in head and neck squamous cell carcinoma.
Authors: Kakuki T, Kurose M, Takano KI, Kondoh A, Obata K, Nomura K, Miyata R, Kaneko Y, Konno T, Takahashi S, Hatakeyama T, Kohno T, Himi T, Kojima T Abstract Junctional adhesion molecule-A (JAM-A), which belongs to the IgG superfamily, is a tight junction molecule associated with epithelial and endothelial barrier function. Overexpression of JAM-A is also closely associated with invasion and metastasis of cancers such as breast cancer, lung cancer and pancreatic cancer. However, little is known about the mechanism in overexpression of JAM-A in head and neck squamous cell carcinoma (HNSCC). In the present study, w...
Source: Oncotarget - April 3, 2016 Category: Cancer & Oncology Tags: Oncotarget Source Type: research

Knockdown of ROS1 gene sensitizes breast tumor growth to doxorubicin in a syngeneic mouse model.
Abstract Treatment of breast cancer, the second leading cause of female deaths worldwide, with classical drugs is often accompanied by treatment failure and relapse of disease condition. Development of chemoresistance and drug toxicity compels compromising the drug concentration below the threshold level with the consequence of therapeutic inefficacy. Moreover, amplification and over-activation of proto-oncogenes in tumor cells make the treatment more challenging. The oncogene, ROS1 which is highly expressed in diverse types of cancers including breast carcinoma, functions as a survival protein aiding cancer progr...
Source: International Journal of Oncology - March 22, 2016 Category: Cancer & Oncology Authors: Tiash S, Chua MJ, Chowdhury EH Tags: Int J Oncol Source Type: research

Oxidative stress and glyoxalase I activity mediate dicarbonyl toxicity in MCF-7 mamma carcinoma cells and a tamoxifen resistant derivative
Conclusions Dicarbonyl toxicity was mediated by oxidative stress and GLO1 activity determines aldehyde toxicity in tamoxifen resistant cells. General Significance Glyoxalases might be predictive biomarkers for tamoxifen resistance and a putative target for the treatment of tamoxifen resistant breast cancer patients. Graphical abstract
Source: Biochimica et Biophysica Acta (BBA) General Subjects - March 22, 2016 Category: Biochemistry Source Type: research

Oxidative stress and glyoxalase-1 activity mediate dicarbonyl toxicity in MCF-7 mamma carcinoma cells and a tamoxifen-resistant derivative
Conclusions Dicarbonyl toxicity was mediated by oxidative stress and GLO-1 activity determines aldehyde toxicity in tamoxifen resistant cells. General Significance. Glyoxalases might be predictive biomarkers for tamoxifen resistance and a putative target for the treatment of tamoxifen resistant breast cancer patients. Graphical abstract
Source: Biochimica et Biophysica Acta (BBA) General Subjects - March 12, 2016 Category: Biochemistry Source Type: research

Oxidative stress and glyoxalase-1 activity mediate dicarbonyl toxicity in MCF-7 mamma carcinoma cells and a tamoxifen resistant derivative.
CONCLUSIONS: Dicarbonyl toxicity was mediated by oxidative stress and GLO-1 activity determines aldehyde toxicity in tamoxifen resistant cells. GENERAL SIGNIFICANCE: Glyoxalases might be predictive biomarkers for tamoxifen resistance and a putative target for the treatment of tamoxifen resistant breast cancer patients. PMID: 26971627 [PubMed - as supplied by publisher]
Source: Biochimica et Biophysica Acta - March 10, 2016 Category: Biochemistry Authors: Nass N, Sel S, Ignatov A, Roessner A, Kalinski T Tags: Biochim Biophys Acta Source Type: research

Abstract A35: WNT4 signaling mediates endocrine response and resistance in invasive lobular carcinoma cells
Invasive lobular carcinoma (ILC) is a histological subtype of breast cancer, affecting ~30,000 U.S. women annually. Over 90% of ILC are estrogen receptor (ER)-positive, however, endocrine therapy may have poorer efficacy in a subset of ILC patients compared to invasive ductal carcinoma (IDC) patients. Based on these observations, we assessed genome-wide ER-mediated gene expression and ER genomic binding in ILC cell lines MDA MB 134VI (MM134) and SUM44PE (44PE), to identify novel mediators of ER signaling and putative therapeutic targets specifically in ILC.Among ILC-specific estrogen-regulated genes, the most strongly indu...
Source: Molecular Cancer Research - February 29, 2016 Category: Cancer & Oncology Authors: Sikora, M. J., Bahreini, A., Alexander, C. M., Oesterreich, S. Tags: Luminal Breast Cancer: Poster Presentations - Proffered Abstracts Source Type: research

Abstract P3-04-02: Invasive lobular carcinoma cell lines utilize WNT4 signaling to mediate estrogen-induced growth
Invasive lobular carcinoma (ILC) is a histological subtype of breast cancer representing 10-15% of newly diagnosed breast tumors. Over 90% of ILC are estrogen receptor (ER)-positive, however, endocrine response and estrogen signaling are not well understood in ILC. Retrospective analyses suggest that ILC patients treated with endocrine therapy have poorer outcomes than invasive ductal carcinoma (IDC) patients, and that ILC patients may not benefit from adjuvant tamoxifen. Based on these observations, we hypothesize that ER regulates unique signaling pathways in ILC cells that control growth and endocrine response.To identi...
Source: Cancer Research - February 18, 2016 Category: Cancer & Oncology Authors: Sikora, M., Oesterreich, S. Tags: Poster Session Abstracts Source Type: research