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Cancers, Vol. 13, Pages 1469: The Epithelial –Mesenchymal Transcription Factor SNAI1 Represses Transcription of the Tumor Suppressor miRNA let-7 in Cancer
In conclusion, the SNAI1/let-7 axis is an important component of stemness pathways in cancer cells, and this study provides a rationale for future work examining this axis as a potential target for cancer stem cell-specific therapies.
Source: Cancers - March 23, 2021 Category: Cancer & Oncology Authors: Hanmin Wang Evgeny Chirshev Nozomi Hojo Tise Suzuki Antonella Bertucci Michael Pierce Christopher Perry Ruining Wang Jeffrey Zink Carlotta A. Glackin Yevgeniya J. Ioffe Juli J. Unternaehrer Tags: Article Source Type: research

Cancers, Vol. 13, Pages 82: STAT3 Stabilizes IKK α Protein through Direct Interaction in Transformed and Cancerous Human Breast Epithelial Cells
In this study, we observed overexpression and co-localization of IKKα and STAT3 in human breast cancer tissues as well as in H-Ras transformed human breast epithelial (H-Ras MCF-10A) and breast cancer (MDA-MB-231) cells. By utilizing small interfering RNA (siRNA) technology, we were able to demonstrate that STAT3 up-regulated IKKα, but not IKKβ or IKKγ, in these cells. This was attributable to direct binding to and subsequent stabilization of IKKα protein by blocking the ubiquitin-proteasome system. Notably, we identified the lysine 44 residue of IKK&...
Source: Cancers - December 30, 2020 Category: Cancer & Oncology Authors: Young-Il Hahn Soma Saeidi Su-Jung Kim Se-Young Park Na-Young Song Jie Zheng Do-Hee Kim Han-Byoel Lee Wonshik Han Dong-Young Noh Hye-Kyung Na Young-Joon Surh Tags: Article Source Type: research

Cancers, Vol. 13, Pages 80: The ITIM-Containing Receptor: Leukocyte-Associated Immunoglobulin-Like Receptor-1 (LAIR-1) Modulates Immune Response and Confers Poor Prognosis in Invasive Breast Carcinoma
Conclusion: High expression of LAIR-1 is associated with poor clinical outcome in BC. Association with immune cells and immune checkpoint markers warrant further studies to assess the underlying mechanistic roles.
Source: Cancers - December 30, 2020 Category: Cancer & Oncology Authors: Chitra Joseph Mansour A. Alsaleem Michael S. Toss Yousif A. Kariri Maryam Althobiti Sami Alsaeed Abrar I. Aljohani Pavan L. Narasimha Nigel P. Mongan Andrew R. Green Emad A. Rakha Tags: Article Source Type: research

ASMT Regulates Tumor Metastasis Through the Circadian Clock System in Triple-Negative Breast Cancer
ConclusionOur study suggests that ASMT regulates the circadian clock system in breast cancer and inhibition of ASMT reduces the invasiveness of triple-negative breast cancer cells by downregulating clock protein in a certain extent, indicating the potential value of ASMT as a drug target for TNBC treatment.
Source: Frontiers in Oncology - October 21, 2020 Category: Cancer & Oncology Source Type: research

Recombinant Dual-target MDM2/MDMX Inhibitor Reverses Doxorubicin Resistance through Activation of the TAB1/TAK1/p38 MAPK Pathway in Wild-type p53 Multidrug-resistant Breast Cancer Cells
Chemotherapy resistance represents a major obstacle for the treatment of patients with breast cancer (BC) and greatly restricts the therapeutic effect of the first-line chemotherapeutic agent doxorubicin (DOX). The present study aimed to investigate the feasibility of the recombinant dual-target murine double minute 2 (MDM2) and murine double minute X (MDMX) inhibitor in reversing the DOX resistance of BC. Both DOX-resistant human breast carcinoma cell lines exhibited a multidrug resistance (MDR) phenotype. The ability of the dual-target MDM2/MDMX inhibitor in reversing doxorubicin resistance was subsequently verified, (9....
Source: Journal of Cancer - July 2, 2020 Category: Cancer & Oncology Authors: Yangwei Fan, Ke Ma, Jiayu Jing, Chuying Wang, Yuan Hu, Yu Shi, Enxiao Li, Qianqian Geng Tags: Research Paper Source Type: research

Inhibition of SMYD2 Sensitized Cisplatin to Resistant Cells in NSCLC Through Activating p53 Pathway
In conclusion, the present study elucidated that the activity of SMYD2 in NSCLC may affect the cell sensitivity to chemotherapeutic agents, especially to CDDP. The elevated SMYD2 mediated CDDP resistance and malignant phenotype in NSCLC, indicating that SMYD2 may be a useful biomarker of CDDP resistance in NSCLC. Inhibition of SMYD2 contributes to the methylation-related activation of p53 and thus results in cell apoptosis. Furthermore, combination treatment with CDDP and an SMYD2 inhibitor had a synergistically antitumor effects in a xenograft model in vivo. Given that SMYD2 has reversible effects and is a targetable prot...
Source: Frontiers in Oncology - April 25, 2019 Category: Cancer & Oncology Source Type: research

Endothelial Cell-Derived TGF- β Promotes Epithelial-Mesenchymal Transition via CD133 in HBx-Infected Hepatoma Cells
Conclusion: The study indicates that secretory factors like TGF-β from neighboring endothelial cells may enhance expression of CD133 and impart an aggressive EMT phenotype to HBx-infected hepatoma cells in HBV induced HCC. Introduction Hepatocellular Carcinoma (HCC) is one of the most common cancer worldwide, representing approximately 4% of all malignancies (1). It has been estimated that more than 50% of HCC cases in the world are associated with hepatitis B virus (HBV) (2). HBV is a partially double stranded DNA virus belonging to the Hepadnavirus family. The HBV genome is 3.2 kb in size and contains fou...
Source: Frontiers in Oncology - April 23, 2019 Category: Cancer & Oncology Source Type: research

Sanguinarine Induces Apoptosis Pathway in Multiple Myeloma Cell Lines via Inhibition of the JaK2/STAT3 Signaling
In this study, we aimed to investigate the potential anti-proliferative and pro-apoptotic activities of SNG in a panel of MM cell lines (U266, IM9, MM1S, and RPMI-8226). SNG treatment of MM cells resulted in a dose-dependent decrease in cell viability through mitochondrial membrane potential loss and activation of caspase 3, 9, and cleavage of PARP. Pre-treatment of MM cells with a universal caspase inhibitor, Z-VAD-FMK, prevented SNG mediated loss of cell viability, apoptosis, and caspase activation, confirming that SNG-mediated apoptosis is caspase-dependent. The SNG-mediated apoptosis appears to be resulted from suppres...
Source: Frontiers in Oncology - April 16, 2019 Category: Cancer & Oncology Source Type: research

PGC1 β Regulates Breast Tumor Growth and Metastasis by SREBP1-Mediated HKDC1 Expression
Conclusions: PGC1β regulates breast cancer tumor growth and metastasis by SREBP1-mediated HKDC1 expression. This provides a novel therapeutic strategy through targeting the PGC1β/HKDC1 signaling pathway for breast cancer treatment. Introduction Breast cancer is a very common cancer with significant premature mortality in women. Around 12% of women in USA will have chance to be diagnosed with breast cancer during their lifetimes (1, 2). The development of breast cancer is regulated by many factors, and even as average survival rates have increased significantly as a result of many advanced treatments...
Source: Frontiers in Oncology - April 16, 2019 Category: Cancer & Oncology Source Type: research

High Expression of DEPDC1 Promotes Malignant Phenotypes of Breast Cancer Cells and Predicts Poor Prognosis in Patients With Breast Cancer
In this study, the immunohistochemistry results demonstrated that DEPDC1 was high-expressed in breast cancer tissues compared with the paired adjacent normal breast tissues, and its tendency at protein level was consistent with mRNA level from TCGA data. Moreover, DEPDC1 mRNA level revealed the strongest association with poor prognosis and development in breast cancer. In vitro assays showed that DEPDC1 overexpression resulted in significant promotion of proliferation by regulating cell cycle in MCF-7 cells, whilst an opposite effect was found in the MDA-MB-231 cells with DEPDC1 deletion. Notably, further investigation ind...
Source: Frontiers in Oncology - April 11, 2019 Category: Cancer & Oncology Source Type: research

Hepatoma-Derived Growth Factor and DDX5 Promote Carcinogenesis and Progression of Endometrial Cancer by Activating β-Catenin
Conclusion: Our results provide novel evidence that HDGF interacts with DDX5 and promotes the progression of EC through the induction of β-catenin. Introduction Endometrial cancer (EC) comprises the most common malignancy involving the female genital tract and the fourth most common malignancy in women after breast, lung, and colorectal cancers (1). In 2012, approximately 320,000 new cases of EC were diagnosed worldwide and the incidence is increasing (2). Currently, endometrial carcinogenesis is thought to be a multi-step process involving the coordinated interaction of hormonal regulation, gene mutation, ad...
Source: Frontiers in Oncology - April 10, 2019 Category: Cancer & Oncology Source Type: research

Cancers, Vol. 11, Pages 442: Targeted siRNA Nanoparticles for Mammary Carcinoma Therapy
Gershon Golomb Non-viral, polymeric-based, siRNA nanoparticles (NPs) have been proposed as promising gene delivery systems. Encapsulating siRNA in targeted NPs could confer improved biological stability, extended half-life, enhanced permeability, effective tumor accumulation, and therapy. In this work, a peptide derived from apolipoprotein B100 (ApoB-P), the protein moiety of low-density lipoprotein, was used to target siRNA-loaded PEGylated NPs to the extracellular matrix/proteoglycans (ECM/PGs) of a mammary carcinoma tumor. siRNA against osteopontin (siOPN), a protein involved in breast cancer development and progre...
Source: Cancers - March 28, 2019 Category: Cancer & Oncology Authors: Meital Ben-David-Naim Arie Dagan Etty Grad Gil Aizik Mirjam M. Nordling-David Alisa Morss Clyne Zvi Granot Gershon Golomb Tags: Article Source Type: research

SNHG6 is upregulated in primary breast cancers and promotes cell cycle progression in breast cancer-derived cell lines
ConclusionsOur results indicate that lncRNA SNHG6 is involved in breast cancer development and may be considered as a potential biomarker for the diagnosis, prognosis and treatment of breast cancer.
Source: Cellular Oncology - March 1, 2019 Category: Cancer & Oncology Source Type: research

TMEM119 silencing inhibits cell viability and causes the apoptosis of gastric cancer SGC-7901 cells.
Authors: Zheng P, Wang W, Ji M, Zhu Q, Feng Y, Zhou F, He Q Abstract Gastric cancer is the second major cause of death associated with cancer and ranks among the top four cancers diagnosed worldwide. Previous findings identified the association of transmembrane proteins (TMEMs) with tumorigenesis of various types of cancer, including breast, liver and kidney cancer. However, the expression and the biological function of TMEMs, especially TMEM119, and its possible molecular mechanism in gastric cancer remain less understood. CCK-8 and flow cytometric analysis was employed to examine the viability and apoptosis of ga...
Source: Oncology Letters - August 17, 2018 Category: Cancer & Oncology Tags: Oncol Lett Source Type: research

SIRT1-dependent epigenetic regulation of H3 and H4 histone acetylation in human breast cancer.
In this study, we elucidated SIRT1 epigenetic role and analyzed the link between the latter and histones H3 and H4 epigenetic marks in all 5 molecular subtypes of breast cancer. Using a cohort of 135 human breast tumors and their matched normal tissues, as well as 5 human-derived cell lines, we identified H3k4ac as a new prime target of SIRT1 in breast cancer. We also uncovered an inverse correlation between SIRT1 and the 3 epigenetic marks H3k4ac, H3k9ac and H4k16ac expression patterns. We showed that SIRT1 modulates the acetylation patterns of histones H3 and H4 in breast cancer. Moreover, SIRT1 regulates its H3 acetylat...
Source: Oncotarget - August 11, 2018 Category: Cancer & Oncology Tags: Oncotarget Source Type: research

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