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Breast cancer cell, microRNA

Mingli Han, Yimeng Wang, Guangcheng Guo, Lin Li, Dongwei Dou, Xin Ge, Pengwei Lv, Fang Wang, Yuanting Gu
miR-30d has been shown to play pivotal roles in cancer development, and has the potential to act as a diagnostic biomarker and therapeutic target in breast cancer. However, the specific function and molecular mechanism of miR-30d in breast cancer cell growth and metastasis is still unknown. The present study seeks to shed light on the potential contribution of the MiR-30d-KLF-11-STAT3 pathway in breast cancer. The results revealed that miR-30d levels were markedly increased in the breast cancer cell lines BT474, MDA-MB-231, HCC197, and MDA-MB-468 compared with the non-tumor mammary gland MCF10A cell line...
June 19, 2018: Journal of Cellular Biochemistry
Guoju Hong, Vincent Kuek, Jiaxi Shi, Lin Zhou, Xiaorui Han, Wei He, Jennifer Tickner, Heng Qiu, Qiushi Wei, Jiake Xu
Epidermal growth factor-like domain-containing protein 7 (EGFL7), a member of the epidermal growth factor (EGF)-like protein family, is a potent angiogenic factor expressed in many different cell types. EGFL7 plays a vital role in controlling vascular angiogenesis during embryogenesis, organogenesis, and maintaining skeletal homeostasis. It regulates cellular functions by mediating the main signaling pathways (Notch, integrin) and EGF receptor cascades. Accumulating evidence suggests that Egfl7 plays a crucial role in cancer biology by modulating tumor angiogenesis, metastasis, and invasion...
June 19, 2018: Journal of Cellular Physiology
Dominika Piasecka, Marcin Braun, Radzislaw Kordek, Rafal Sadej, Hanna Romanska
PURPOSE: Dysregulation of miRNA profile has been associated with a broad spectrum of cellular processes underlying progression of various human malignancies. Increasing evidence suggests that specific microRNA clusters might be of clinical utility, especially in triple-negative breast carcinoma (TNBC), devoid of both predictive markers and potential therapeutic targets. Here we provide a comprehensive review of the existing data on microRNAs in TNBC, their molecular targets, a putative role in invasive progression with a particular emphasis on the epithelial-to-mesenchymal transition (EMT) and acquisition of stem-cell properties (CSC), regarded both as prerequisites for metastasis, and significance for therapy...
June 19, 2018: Journal of Cancer Research and Clinical Oncology
Sara Donzelli, Elisa Milano, Magdalena Pruszko, Andrea Sacconi, Silvia Masciarelli, Ilaria Iosue, Elisa Melucci, Enzo Gallo, Irene Terrenato, Marcella Mottolese, Maciej Zylicz, Alicja Zylicz, Francesco Fazi, Giovanni Blandino, Giulia Fontemaggi
BACKGROUND: As crucial regulators of the immune response against pathogens, macrophages have been extensively shown also to be important players in several diseases, including cancer. Specifically, breast cancer macrophages tightly control the angiogenic switch and progression to malignancy. ID4, a member of the ID (inhibitors of differentiation) family of proteins, is associated with a stem-like phenotype and poor prognosis in basal-like breast cancer. Moreover, ID4 favours angiogenesis by enhancing the expression of pro-angiogenic cytokines interleukin-8, CXCL1 and vascular endothelial growth factor...
June 19, 2018: Breast Cancer Research: BCR
Y-T Fu, H-B Zheng, D-Q Zhang, L Zhou, H Sun
OBJECTIVE: To explore the effects of microRNA-1266 (miR-1266) on metastasis and growth in papillary thyroid carcinoma cells and to provide therapeutic targets for papillary thyroid carcinoma. PATIENTS AND METHODS: By quantitative Real-time polymerase chain reaction (PCR), miR-1266 expression level in 38 pairs of papillary thyroid carcinoma tissues and three breast cancer-derived cell lines was examined. After transfection with miR-1266 mimics, the effects of miR-1266 over-expression on cell proliferation, invasion and migration were analyzed...
June 2018: European Review for Medical and Pharmacological Sciences
Wei Cai, Yong Xu, Jian Yin, Wenshan Zuo, Zhen Su
Recently, microRNA (miR)‑590‑5p has been shown to inhibit tumorigenesis in colorectal and breast cancer; however, its function in osteosarcoma (OS) requires further investigation. In the present study miR‑590‑5p expression was poorly expressed in OS samples and cell lines when compared with that observed in normal cells. In addition, overexpression of miR‑590‑5p significantly reduced the proliferation, migration and invasion of SAOS2 and U2OS cells in vitro, as well as inhibiting tumor sizes in vivo...
June 15, 2018: Molecular Medicine Reports
Yanping Zhang, Shi Ding, Jie Yang, Xingfeng Chen, Weilin Huang
There is emerging evidence that some microRNAs can promote or suppress several human cancer development and progression. However, the profile and molecular mechanism of microRNAs for human breast cancer is poorly unknown. We used bioinformatics approaches to find new candidate diagnostic and therapeutic miRNAs in human breast cancer via analysis of TCGA RNA sequencing data and publicly GEO microarray data, in order to provide theoretical basis for the future investigations of breast cancer. Decreased expression miR-146a was identified as a key regulator of human breast cancer development and progression...
June 18, 2018: Pathology Oncology Research: POR
Muqing Gu, Lijuan Wang, Chun Yang, Xue Li, Chanwei Jia, Stephane Croteau, Xiangyan Ruan, Pierre Hardy
BACKGROUND: Recent investigations have indicated that hormone therapy may increase the risk of breast cancer (BC), and the addition of synthetic progestins may play a critical role in this. Several studies have pointed out the important role of progesterone receptor membrane component 1 (PGRMC1) in the development of BC, especially with hormone therapy using progestins. Although the deregulation of microRNA-181a (miR-181a) is often associated with human BC, the effect of miR-181a on PGRMC1 expression during hormone therapy has not been investigated...
August 2018: Maturitas
Tao Zhang, Kangfeng Jiang, Xinying Zhu, Gan Zhao, Haichong Wu, Ganzhen Deng, Changwei Qiu
Breast cancer is one of the most lethal cancers in the world. The fight against breast cancer has also become a major task for medical workers. MicroRNAs (miRNAs) are often aberrantly expressed in diverse cancers and are involved in progression and metastasis. Many studies have found that miRNAs can act as oncogenes or as tumor suppressor genes. Here, we show that miR-433 is significantly decreased in breast cancer cells. In addition, we demonstrate the effects of miR-433 on breast cancer cell apoptosis, migration and proliferation in an attempt to elucidate the mechanism of action of miR-433...
2018: International Journal of Biological Sciences
Tianpeng Jiang, Zhi Huang, Shuai Zhang, Weijie Zou, Lei Xiang, Xiaowen Wu, Yaping Shen, Weixin Liu, Zhu Zeng, Ansu Zhao, Shi Zhou, Qingfan Zeng
Hepatocellular carcinoma (HCC) is the third leading cause of cancer‑associated mortality in the 21st century. microRNA (miR)‑23b has been shown to be involved in the pathogenesis of many cancers, including breast and prostate cancer. However, the role of miR‑23b in HCC remains unclear. The present study revealed a negative correlation between miR‑23b expression in HCC tissues and progression of carcinomas. Compared to normal tissues, miR‑23b expression was significantly downregulated in HCC tissues, whereas the expression of interleukin (IL)‑11 and IL‑11 receptor α (IL‑11Rα) was significantly upregulated, indicating that miR‑23b expression is negatively correlated with IL‑11 and IL‑11Rα expression...
June 11, 2018: Molecular Medicine Reports
Shuangzhen Bao, Xinying Wang, Zhichao Wang, Jinqiang Yang, Fangzhen Liu, Changheng Yin
Despite the great progress in recent years, many aspects of the pathogenesis and progression of breast cancer remain unclear. A better understanding on the molecular mechanisms underlying the metastasis and recurrence is crucial to improve the treatment of this lethal disease. MCF-7 cells were xenografted into mice until visible tumor developed and the cells from tumor tissue and adjacent normal tissue were cultured with 3 passages as MT cells and IT cells, respectively. Microarray analysis was performed to detect several viable MicroRNAs in these two types of cells...
June 12, 2018: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
Gen Li, Li Li, Qi Sun, Jiezhou Wu, Wei Ge, Guanghua Lu, Ming Cai
Tumour metastasis is one of the most serious challenges of cancer as it is the major cause of mortality in patients with solid tumours, including osteosarcoma (OS). In this regard, anti-metastatic genes have potential for metastasis inhibition strategies. Recent evidence showed the importance of breast cancer metastasis suppressor 1 (BRMS1) in control of OS invasiveness, but the regulation of BRMS1 in OS remains largely unknown. Here, we used bioinformatics analyses to predict BRMS1-targeting microRNAs (miRNAs), and the functional binding of miRNAs to BRMS1 mRNA was evaluated using a dual luciferase reporter assay...
June 11, 2018: Molecules and Cells
Al Maqsudur Rashid, Latha Ramalingam, Arwa Al-Jawadi, Naima Moustaid-Moussa, Hanna Moussa
PURPOSE: Recently, new studies have brought to light the potential risks of low dose radiation (LDR) in cancer. In this review, we discuss in detail the detrimental effects of LDR in some model organisms and animal models, as well as potential risks to human beings from some routine medical screening procedures. Furthermore, cellular mechanisms by which LDR exerts its negative effects endoplasmic reticulum stress, epigenetic changes and microRNAs are also reviewed. A few studies are discussed that have reported some benefits of LDR through changes in energy metabolism...
June 8, 2018: International Journal of Radiation Biology
Federica Franchino, Roberta Rudà, Riccardo Soffietti
Advances in chemotherapy and targeted therapies have improved survival in cancer patients with an increase of the incidence of newly diagnosed brain metastases (BMs). Intracranial metastases are symptomatic in 60-70% of patients. Magnetic resonance imaging (MRI) with gadolinium is more sensitive than computed tomography and advanced neuroimaging techniques have been increasingly used in the detection, treatment planning, and follow-up of BM. Apart from the morphological analysis, the most effective tool for characterizing BM is immunohistochemistry...
2018: Frontiers in Oncology
Katherine Hughes, Christine J Watson
Since seminal descriptions of signal transducer and activator of transcription 3 (STAT3) as a signal transducer and transcriptional regulator, which is most usually activated by phosphorylation of a specific tyrosine residue, a staggering wealth of research has delineated the key role of this transcription factor as a mediator of mammary gland postlactational regression (involution), and paradoxically, a pro-survival factor in breast cancer and some breast cancer cell lines. STAT3 is a critical regulator of lysosomal-mediated programmed cell death (LM-PCD) during mammary gland involution, where uptake of milk fat globules, and consequent high levels of free fatty acids, cause permeabilisation of lysosomal vesicle membranes, in turn leading to cathepsin protease leakage and cell death...
June 7, 2018: International Journal of Molecular Sciences
Wenjing Chen, Andrew D Hoffmann, Huiping Liu, Xia Liu
Metastasis accounts for 90% of breast cancer mortality. Despite the significant progress made over the past decade in cancer medicine our understanding of metastasis remains limited, therefore preventing and targeting metastasis is not yet possible. Breast cancer cells preferentially metastasize to specific organs, known as "organotropic metastasis", which is regulated by subtypes of breast cancer, host organ microenvironment, and cancer cells-organ interactions. The cross-talk between cancer cells and host organs facilitates the formation of the premetastatic niche and is augmented by factors released from cancer cells prior to the cancer cells' arrival at the host organ...
2018: NPJ Precision Oncology
Kurataka Otsuka, Yusuke Yamamoto, Takahiro Ochiya
Certain lifestyles, such as unhealthy eating habits, are associated with an increased risk for several diseases, including cancer. Recently, some naturally occurring compounds, such as resveratrol, have been shown to regulate microRNA (miRNA) expression in a positive manner; this regulatory activity is likely to be advantageous for cancer prevention and treatment. Resveratrol, a multi-functional polyphenolic phytoalexin, has been known to exert anti-tumorigenic and anti-inflammatory effects and to regulate miRNA expression...
May 15, 2018: Oncotarget
Jeannette T Bensen, Mariaelisa Graff, Kristin L Young, Praveen Sethupathy, Joel Parker, Chad V Pecot, Kevin Currin, Stephen A Haddad, Edward A Ruiz-Narváez, Christopher A Haiman, Chi-Chen Hong, Lara E Sucheston-Campbell, Qianqian Zhu, Song Liu, Song Yao, Elisa V Bandera, Lynn Rosenberg, Kathryn L Lunetta, Christine B Ambrosone, Julie R Palmer, Melissa A Troester, Andrew F Olshan
BACKGROUND: MicroRNAs (miRNAs) regulate gene expression and influence cancer. Primary transcripts of miRNAs (pri-miRNAs) are poorly annotated and little is known about the role of germline variation in miRNA genes and breast cancer (BC). We sought to identify germline miRNA variants associated with BC risk and tumor subtype among African-American (AA) women. METHODS: Under the African American Breast Cancer Epidemiology and Risk (AMBER) Consortium, genotyping and imputed data from four studies on BC in AA women were combined into a final dataset containing 224,188 miRNA gene single nucleotide polymorphisms (SNPs) for 8350 women: 3663 cases and 4687 controls...
June 5, 2018: Breast Cancer Research: BCR
Federica Baldassari, Carlotta Zerbinati, Marco Galasso, Fabio Corrà, Linda Minotti, Chiara Agnoletto, Maurizio Previati, Carlo M Croce, Stefano Volinia
Background: Breast cancer (BC) represents the most common cancer in women worldwide. Due to its heterogeneous nature, breast cancer management might benefit from differential treatments toward personalized medicine. Additionally, drug resistance is a common phenomenon. We systematically investigated the effect of 14 different drugs administered on BC cell lines in combination with microRNAs (miRNA, miR). Methods: Thirty-eight miRNAs, all associated with BC by clinical and molecular parameters including progression, prognosis and subtypes, were tested for their effects on the viability of 12 different BC cell lines...
2018: Frontiers in Genetics
Xiangdong Bai, Guohui Han, Yang Liu, Hongchuan Jiang, Qiang He
Increasing evidence showed that microRNAs (miRNAs) were abnormally expressed in cancers and made effects on the tumorigenesis. Aberrant expression of miR-20a-5p has been reported in human breast carcinoma. However, the functional mechanism of miR-20a-5p in human breast carcinoma, particularly in triple-negative breast cancer (TNBC), required further investigations. Here, firstly, we determined that miR-20a-5p was highly expressed in both TNBC tissues and cell lines. Then, we explored that the overexpression of miR-20a-5p promoted the migration and invasion of TNBC cells in vitro...
July 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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