Computational insights on the molecular mechanisms across breast cancer progression combining gene differential expression and co-expression

2021 ◽  
Author(s):  
Emmanouil K. Ikonomakis ◽  
Marilena M. Bourdakou ◽  
George Kolios ◽  
Michael N. Vrahatis ◽  
George M. Spyrou
Keyword(s):  
Breast Cancer ◽  
Differential Expression ◽  
Cancer Progression ◽  
Molecular Mechanisms ◽  
Breast Cancer Progression ◽  
Gene Differential Expression

scholarly journals Phosphatidylinositol 3-kinase regulatory subunit 1 and phosphatase and tensin homolog as therapeutic targets in breast cancer

Tumor Biology ◽  
2017 ◽  
Vol 39 (3) ◽  
pp. 101042831769552 ◽  
Author(s):  
Ebubekir Dirican ◽  
Mustafa Akkiprik
Keyword(s):  
Breast Cancer ◽  
Cancer Progression ◽  
Molecular Mechanisms ◽  
Breast Cancer Progression ◽  
Regulatory Subunit ◽  
Phosphatidylinositol 3 Kinase ◽  
Phosphatase And Tensin Homolog ◽  
Tensin Homolog ◽  
Kinase Pathway ◽  
Phosphatidylinositol 3

Breast cancer is the most commonly diagnosed cancer among women in Turkey and worldwide. It is considered a heterogeneous disease and has different subtypes. Moreover, breast cancer has different molecular characteristics, behaviors, and responses to treatment. Advances in the understanding of the molecular mechanisms implicated in breast cancer progression have led to the identification of many potential therapeutic gene targets, such as Breast Cancer 1/2, phosphatidylinositol 3-kinase catalytic subunit alpha, and tumor protein 53. The aim of this review is to summarize the roles of phosphatidylinositol 3-kinase regulatory subunit 1 (alpha) (alias p85α) and phosphatase and tensin homolog in breast cancer progression and the molecular mechanisms involved. Phosphatase and tensin homolog is a tumor suppressor gene and protein. Phosphatase and tensin homolog antagonizes the phosphatidylinositol 3-kinase/AKT signaling pathway that plays a key role in cell growth, differentiation, and survival. Loss of phosphatase and tensin homolog expression, detected in about 20%–30% of cases, is known to be one of the most common tumor changes leading to phosphatidylinositol 3-kinase pathway activation in breast cancer. Instead, the regulatory subunit p85α is a significant component of the phosphatidylinositol 3-kinase pathway, and it has been proposed that a reduction in p85α protein would lead to decreased negative regulation of phosphatidylinositol 3-kinase and hyperactivation of the phosphatidylinositol 3-kinase pathway. Phosphatidylinositol 3-kinase regulatory subunit 1 protein has also been reported to be a positive regulator of phosphatase and tensin homolog via the stabilization of this protein. A functional genetic alteration of phosphatidylinositol 3-kinase regulatory subunit 1 that results in reduced p85α protein expression and increased insulin receptor substrate 1 binding would lead to enhanced phosphatidylinositol 3-kinase signaling and hence cancer development. Phosphatidylinositol 3-kinase regulatory subunit 1 underexpression was observed in 61.8% of breast cancer samples. Therefore, expression/alternations of phosphatidylinositol 3-kinase regulatory subunit 1 and phosphatase and tensin homolog genes have crucial roles for breast cancer progression. This review will summarize the biological roles of phosphatidylinositol 3-kinase regulatory subunit 1 and phosphatase and tensin homolog in breast cancer, with an emphasis on recent findings and the potential of phosphatidylinositol 3-kinase regulatory subunit 1 and phosphatase and tensin homolog as a therapeutic target for breast cancer therapy.

scholarly journals Differential expression of arrestins is a predictor of breast cancer progression and survival

2011 ◽  
Vol 130 (3) ◽  
pp. 791-807 ◽  
Author(s):  
Allison M. Michal ◽  
Amy R. Peck ◽  
Thai H. Tran ◽  
Chengbao Liu ◽  
David L. Rimm ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Differential Expression ◽  
Cancer Progression ◽  
Breast Cancer Progression

scholarly journals Differential expression profile of microRNAs associated with human breast cancer progression

2013 ◽  
Vol 7 (Suppl 2) ◽  
pp. P9 ◽  
Author(s):  
Augusto LF Marino ◽  
Adriane F Evangelista ◽  
Taciane Macedo ◽  
Henrique CS Silveira ◽  
Ligia M Kerr ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Differential Expression ◽  
Cancer Progression ◽  
Expression Profile ◽  
Human Breast Cancer ◽  
Breast Cancer Progression ◽  
Human Breast ◽  
Differential Expression Profile

scholarly journals MicroRNA-374b inhibits breast cancer progression through regulating CCND1 and TGFA genes

2021 ◽  
Author(s):  
Yan Liu ◽  
Ai Zhang ◽  
Ping-Ping Bao ◽  
Li Lin ◽  
Yina Wang ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Cells ◽  
Cancer Progression ◽  
Breast Cancer Cells ◽  
Molecular Mechanisms ◽  
Breast Cancer Progression ◽  
Breast Cancer Cell Lines ◽  
Malignant Behavior

Abstract Emerging evidence indicates that microRNAs (miRNAs) play a critical role in breast cancer development. We recently reported that a higher expression of miR-374b in tumor tissues was associated with a better disease-free survival of triple-negative breast cancer (TNBC). However, the functional significance and molecular mechanisms underlying the role of miR-374b in breast cancer are largely unknown. In this current study, we evaluated the biological functions and potential mechanisms of miR-374b in both TNBC and non-TNBC. We found that miR-374b was significantly downregulated in breast cancer tissues, compared to adjacent tissues. MiR-374b levels were also lower in breast cancer cell lines, as compared to breast epithelial cells. In vitro and in vivo studies demonstrated that miR-374b modulates the malignant behavior of breast cancer cells, such as cell proliferation in 2D and 3D, cell invasion ability, colony forming ability, and tumor growth in mice. By using bioinformatics tools, we predicted that miR-374b plays a role in breast cancer cells through negatively regulating cyclin D1 (CCND1) and transforming growth factor alpha (TGFA). We further confirmed that CCND1 and TGFA contribute to the malignant behavior of breast cancer cells in vitro and in vivo. Our rescue experiments showed that overexpressing CCND1 or TGFA reverses the phenotypes caused by miR-374b overexpression. Taken together, our studies suggest that miR-374b modulates malignant behavior of breast cancer cells by negatively regulating CCND1 and TGFA genes. The newly identified miR-374b-mediated CCND1 and TGFA gene silencing may facilitate a better understanding of the molecular mechanisms of breast cancer progression.

scholarly journals Comprehensive Analysis of lncRNA and miRNA Regulatory Network Reveals Potential Prognostic Non-coding RNA Involved in Breast Cancer Progression

2021 ◽  
Vol 12 ◽  
Author(s):  
Sheng Gao ◽  
Xun Lu ◽  
Jingjing Ma ◽  
Qian Zhou ◽  
RanRan Tang ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Overall Survival ◽  
Cancer Progression ◽  
Regulatory Network ◽  
Molecular Mechanisms ◽  
Malignant Tumors ◽  
Early Stage ◽  
Breast Cancer Progression ◽  
Poor Overall Survival ◽  
Non Coding Rna

Breast cancer is one of the most common malignant tumors in women and is the second leading cause of cancer deaths among women. The tumorigenesis and progression of breast cancer are not well understood. The existing researches have indicated that non-coding RNAs, which mainly include long non-coding RNA (lncRNA) and microRNA (miRNA), have gradually become important regulators of breast cancer. We aimed to screen the differential expression of miRNA and lncRNA in the different breast cancer stages and identify the key non-coding RNA using TCGA data. Based on series test of cluster (STC) analysis, bioinformatics analysis, and negatively correlated relationships, 122 lncRNAs, 67 miRNAs, and 119 mRNAs were selected to construct the regulatory network of lncRNA and miRNA. It was shown that the miR-93/20b/106a/106b family was at the center of the regulatory network. Furthermore, 6 miRNAs, 10 lncRNAs, and 15 mRNAs were significantly associated with the overall survival (OS, log-rank P < 0.05) of patients with breast cancer. Overexpressed miR-93 in MCF-7 breast cancer cells was associated with suppressed expression of multiple lncRNAs, and these downregulated lncRNAs (MESTIT1, LOC100128164, and DNMBP-AS1) were significantly associated with poor overall survival in breast cancer patients. Therefore, the miR-93/20b/106a/106b family at the core of the regulatory network discovered by our analysis above may be extremely important for the regulation of lncRNA expression and the progression of breast cancer. The identified key miRNA and lncRNA will enhance the understanding of molecular mechanisms of breast cancer progression. Targeting these key non-coding RNA may provide new therapeutic strategies for breast cancer treatment and may prevent the progression of breast cancer from an early stage to an advanced stage.

scholarly journals Molecular Docking Studies to Understand the Potential Role of Ginger Compounds (6-Gingerol and 6-Shogaol) on Anti-Angiogenic and Anti-Lymphangiogenic Mechanisms

2019 ◽  
Vol 12 (1) ◽  
pp. 61
Author(s):  
Santhoshi Rani Nanchari ◽  
Shyam Perugu ◽  
Vijayalakshmi Venkatesan
Keyword(s):  
Breast Cancer ◽  
Binding Affinity ◽  
Cancer Progression ◽  
In Silico ◽  
Molecular Mechanisms ◽  
Potential Role ◽  
Breast Cancer Progression ◽  
Biologically Active ◽  
Neuropilin 1 ◽  
Angiopoietin 2

Background: 6-Gingerol and 6-Shogaol are novel biologically active phenol compounds isolated from rhizomes of Ginger (Zingiber officinale Roscoe), which has a potential role as anti-inflammatory, anti-oxidant and apoptotic. Till date there are no scientific reports on the functional properties of Ginger against the molecular mechanisms of angiogenesis, lymphangiogenesis, and metastasis. Hence, in the present study we have explored the feasibility of active ginger compounds (6-Gingerol and 6-Shogaol) to validate their molecular mechanisms on angiogenesis and lymphangiogenesis in breast cancer progression through in silico approach. Methodology: Studies have been targeted to find the interactions between selected protein receptors, which play a pivotal role in angiogenesis and lymphangiogenesis and ligands of Ginger compounds (6-Gingerol and 6-Shogaol) by using Accelrys discovery studio 2.5, followed by analysis of data. Results: Based on the in silico approaches, we found the best interactions between ginger compounds (6-Gingerol and 6-Shogaol) and targeted protein molecules as shown less than 3.10 A0H-bond distance to indicate higher binding affinity and stronger interactions and high docking scores. We demonstrate docking interactions of 6-Gingerol with the proteins involved in angiogenesis like VEGF-A (3QTK), VEGFR-1 (5ABD), VEGFR-2/VEGF-E COMPLEX (3V6B, Angiopoietin-2 (4JZC), PDGF-B (4QCI), KDR (5EW3) and with the proteins involved in lymphangiogenesis such as VEGF-C(2XIX), VEGF-C in complex with domains of 2 and 3 of VEGFR2 (2X1W), NRP2(4QDS) and Neuropilin-1/VEGF-A complex (4DEQ). Similarly, our data shows that 6-Shogaol also interacts with angiogenic specific proteins, like [VEGF-A (3QTK), VEGFR-1 (5ABD), VEGFR-2/VEGF-E COMPLEX (3V6B), Angiopoietin-2 (4JZC), PDGF-B (4QCI), KDR (5EW3)] and lymphangiogenesis [VEGF-C(2XIX), VEGF-C in complex with domains of 2 and 3 of VEGFR2 (2X1W), NRP2(4QDS) and Neuropilin-1/VEGF-A complex (4DEQ)]. Discussion: In silico approaches suggest a stronger binding affinity between the ginger compounds (6-Gingerol and 6-Shogaol) and selected proteins critical in angiogenesis and lymphangiogenesis. The present study underlines the feasibility of neutraceuticals to target the pathways participating in breast cancer progression through neovascularization. Our results also advocate 6-Gingerol to be more potent inhibitor of lymphangiogenesis assessed by its binding efficacy with VEGF-C and NRP2 (4QDS) as compared against 6-Shogaol.

scholarly journals Environmental chemicals, breast cancer progression and drug resistance

2020 ◽  
Vol 19 (1) ◽  
Author(s):  
Meriem Koual ◽  
Céline Tomkiewicz ◽  
German Cano-Sancho ◽  
Jean-Philippe Antignac ◽  
Anne-Sophie Bats ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Progression ◽  
Molecular Mechanisms ◽  
Environmental Chemicals ◽  
Breast Cancer Progression ◽  
Environmental Toxicants ◽  
Metastasis Formation ◽  
Mesenchymal Transition ◽  
Invasion Mechanisms

AbstractBreast cancer (BC) is one of the most common causes of cancer in the world and the second leading cause of cancer deaths among women. Mortality is associated mainly with the development of metastases. Identification of the mechanisms involved in metastasis formation is, therefore, a major public health issue. Among the proposed risk factors, chemical environment and pollution are increasingly suggested to have an effect on the signaling pathways involved in metastatic tumor cells emergence and progression. The purpose of this article is to summarize current knowledge about the role of environmental chemicals in breast cancer progression, metastasis formation and resistance to chemotherapy. Through a scoping review, we highlight the effects of a wide variety of environmental toxicants, including persistent organic pollutants and endocrine disruptors, on invasion mechanisms and metastatic processes in BC. We identified the epithelial-to-mesenchymal transition and cancer-stemness (the stem cell-like phenotype in tumors), two mechanisms suspected of playing key roles in the development of metastases and linked to chemoresistance, as potential targets of contaminants. We discuss then the recently described pro-migratory and pro-invasive Ah receptor signaling pathway and conclude that his role in BC progression is still controversial. In conclusion, although several pertinent pathways for the effects of xenobiotics have been identified, the mechanisms of actions for multiple other molecules remain to be established. The integral role of xenobiotics in the exposome in BC needs to be further explored through additional relevant epidemiological studies that can be extended to molecular mechanisms.

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