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Breast cancer progression

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https://www.readbyqxmd.com/read/29353366/is-invasion-a-necessary-step-for-metastases-in-breast-cancer
#1
REVIEW
Steven A Narod, Victoria Sopik
PURPOSE: To review the empirical evidence to support the conventional (sequential) model of breast cancer progression, which is based on the paradigm that cancer passes through several stages, including an in situ stage prior to an invasive stage, and thereafter (in some cases) disseminates to the lymph nodes and distant organs. METHODS: We review the cancer literature of the last 50 years which relates to the prevention of invasive breast cancer (through radiotherapy or surgery) and reductions in the mortality for breast cancer...
January 20, 2018: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29353288/quercetin-inhibits-breast-cancer-stem-cells-via-downregulation-of-aldehyde-dehydrogenase-1a1-aldh1a1-chemokine-receptor-type-4-cxcr4-mucin-1-muc1-and-epithelial-cell-adhesion-molecule-epcam
#2
Rong Wang, Laixiu Yang, Shen Li, Dongmei Ye, Lihong Yang, Qingyan Liu, Zibo Zhao, Qing Cai, Junzhen Tan, Xiuli Li
BACKGROUND Quercetin, nature's most common flavonoid, possesses anticarcinogenic properties against various forms of cancer. The aim of this study was to investigate the effect of quercetin on breast cancer stem cells in the MDA-MB-231 cell line, and to elucidate the possible mechanisms for those effects. MATERIAL AND METHODS We evaluated breast cancer stem cell proliferation, clone generation, and mammosphere formation to determine the effect of quercetin treatment on breast cancer stem cells. RESULTS In our study, quercetin suppressed breast cancer stem cell proliferation, self-renewal, and invasiveness...
January 21, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29353230/a-model-of-dormant-emergent-metastatic-breast-cancer-progression-enabling-exploration-of-biomarker-signatures
#3
Amanda M Clark, Manu Kumar, Sarah Wheeler, Carissa Young, Raman Venkataramanan, Donna Stolz, Linda Griffith, Douglas A Lauffenburger, Alan Wells
Breast cancer mortality predominantly results from dormant micrometastases that emerge as fatal outgrowths years after initial diagnosis. In order to gain insights concerning factors associated with emergence of liver metastases, we recreated spontaneous dormancy in an all-human ex vivo hepatic microphysiological system (MPS). Seeding this MPS with small numbers (<0.05% by cell count) of the aggressive MDA-MB-231 breast cancer cell line, two populations formed: actively proliferating ('growing'; EdU+), and spontaneously quiescent ('dormant'; EdU-)...
January 20, 2018: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/29352243/nucleolin-and-erbb2-inhibition-reduces-tumorigenicity-of-erbb2-positive-breast-cancer
#4
Eya Wolfson, Shira Solomon, Eran Schmukler, Yona Goldshmit, Ronit Pinkas-Kramarski
ErbB2, a member of the ErbB family of receptor tyrosine kinases, is an essential player in the cell's growth and proliferation signaling pathways. Amplification or overexpression of ErbB2 is observed in ∼30% of breast cancer patients, and often drives cellular transformation and cancer development. Recently, we have shown that ErbB2 interacts with the nuclear-cytoplasmic shuttling protein nucleolin, an interaction which enhances cell transformation in vitro, and increases mortality risk and disease progression rate in human breast cancer patients...
January 19, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29352052/estrogen-receptor-positive-breast-cancer-exploiting-signaling-pathways-implicated-in-endocrine-resistance
#5
REVIEW
Adam M Brufsky, Maura N Dickler
Advancements in molecular profiling and endocrine therapy (ET) have led to more focused clinical attention on precision medicine. These advances have expanded our understanding of breast cancer (BC) pathogenesis and hold promising implications for the future of therapy. The estrogen receptor-α is a predominant endocrine regulatory protein in the breast and in estrogen-induced BC. Successful targeting of proteins and genes within estrogen receptor (ER) nuclear and nonnuclear pathways remains a clinical goal...
January 19, 2018: Oncologist
https://www.readbyqxmd.com/read/29351902/targeting-the-sphk1-s1p-s1pr1-axis-that-links-obesity-chronic-inflammation-and-breast-cancer-metastasis
#6
Masayuki Nagahashi, Akimitsu Yamada, Eriko Katsuta, Tomoyoshi Aoyagi, Wei-Ching Huang, Krista P Terracina, Nitai C Hait, Jeremy C Allegood, Junko Tsuchida, Kizuki Yuza, Masato Nakajima, Manabu Abe, Kenji Sakimura, Sheldon Milstien, Toshifumi Wakai, Sarah Spiegel, Kazuaki Takabe
Although obesity with associated inflammation is now recognized as a risk factor for breast cancer and distant metastases, the functional basis for these connections remain poorly understood. Here we show that in breast cancer patients and in animal breast cancer models, obesity is a sufficient cause for increased expression of the bioactive sphingolipid mediator sphingosine-1-phosphate (S1P) which mediates cancer pathogenesis. A high fat diet was sufficient to upregulate expression of sphingosine kinase 1 (SphK1), the enzyme that produces S1P, along with its receptor S1PR1 in syngeneic and spontaneous breast tumors...
January 19, 2018: Cancer Research
https://www.readbyqxmd.com/read/29351761/selective-serotonin-reuptake-inhibitor-use-and-breast-cancer-survival-a-population-based-cohort-study
#7
John Busby, Ken Mills, Shu-Dong Zhang, Fabio Giuseppe Liberante, Chris R Cardwell
BACKGROUND: Nearly 50% of breast cancer patients suffer from depression or anxiety. Selective serotonin reuptake inhibitors (SSRIs), the first-line pharmacological treatment for depression, have been implicated in breast cancer development through increased prolactin levels and tamoxifen metabolism inhibition. Previous studies of breast cancer progression have focused on tamoxifen users, or have been limited by their small sample size and methodology. Therefore, we used UK population-based data to more robustly investigate the association between SSRI use and cancer-specific mortality...
January 19, 2018: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/29350433/amino-group-of-salicylic-acid-exhibits-enhanced-inhibitory-potential-against-insulin-amyloid-fibrillation-with-protective-aptitude-toward-amyloid-induced-cytotoxicity
#8
Masihuz Zaman, Mohsin Vahid Khan, Syed Mohammad Zakariya, Saima Nusrat, Syed Mustapha Meeran, Parvez Alam, Mohammad Rehan Ajmal, Wahiduzzaman Wahiduzzaman, Yasser E Shahein, Amira M Abouelella, Rizwan Hasan Khan
Protein misfolding and aggregation lead to amyloid generation that in turn may induce cell membrane disruption and leads to cell apoptosis. In an effort to prevent or treat amyloidogenesis, large number of studies has been paying attention on breakthrough of amyloid inhibitors. In the present work, we aim to access the effect of two drugs, that is, acetylsalicylic acid and 5-amino salicylic acid on insulin amyloids by using various biophysical, imaging, cell viability assay, and computational approaches. We established that both drugs reduce the turbidity, light scattering and fluorescence intensity of amyloid indicator dye thioflavin T...
December 11, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29349758/is-dcis-overrated
#9
Joshua Feinberg, Rachel Wetstone, Dana Greenstein, Patrick Borgen
Ductal carcinoma in situ (DCIS), the noninvasive form of breast cancer (BC), comprises just over 20% of breast cancer cases diagnosed each year in the USA. Most patients are treated with local excision of the disease followed by whole breast radiation therapy. Total mastectomy is not an uncommon approach, and total mastectomy with a contralateral risk-reducing mastectomy has been on the rise in the past decade. In estrogen receptor-positive disease, patients are often offered endocrine ablative therapy with a selective estrogen receptor modulator or an aromatase inhibitor as both treatment and prevention...
2018: Cancer Treatment and Research
https://www.readbyqxmd.com/read/29349712/highly-favorable-physiological-responses-to-concurrent-resistance-and-high-intensity-interval-training-during-chemotherapy-the-optitrain-breast-cancer-trial
#10
Sara Mijwel, Malin Backman, Kate A Bolam, Emil Olofsson, Jessica Norrbom, Jonas Bergh, Carl Johan Sundberg, Yvonne Wengström, Helene Rundqvist
BACKGROUND: Advanced therapeutic strategies are often accompanied by significant adverse effects, which warrant equally progressive countermeasures. Physical exercise has proven an effective intervention to improve physical function and reduce fatigue in patients undergoing chemotherapy. Effects of high-intensity interval training (HIIT) in this population are not well established although HIIT has proven effective in other clinical populations. The aim of the OptiTrain trial was to examine the effects of concurrent resistance and high-intensity interval training (RT-HIIT) or concurrent moderate-intensity aerobic and high-intensity interval training (AT-HIIT), to usual care (UC) on pain sensitivity and physiological outcomes in patients with breast cancer during chemotherapy...
January 18, 2018: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29349597/drug-repurposing-screening-identifies-bortezomib-and-panobinostat-as-drugs-targeting-cancer-associated-fibroblasts-cafs-by-synergistic-induction-of-apoptosis
#11
Hak-Min Lee, Eunmyong Lee, So-Young Yeo, Sang Shin, Hyun-Kyu Park, Do-Hyun Nam, Seok-Hyung Kim
Cancer associated fibroblasts (CAFs) are the most abundant components of cancer-microenvironment. They play important roles in cancer initiation, progression, and metastasis. In addition, CAFs can confer drug-resistance to cancer cells. Considering their pro-tumorigenic roles, it is recommended to remove CAFs to prevent cancer recurrence after chemotherapy. Despite their clinical significance, few anti-CAF drugs have been developed. The objective of this study was to find a drug that could suppress the viability of patient-derived CAFs through repurposed screening of 51 drugs that were in clinical trials or received FDA approval...
January 18, 2018: Investigational New Drugs
https://www.readbyqxmd.com/read/29348461/loss-of-cdk5-in-breast-cancer-cells-promotes-ros-mediated-cell-death-through-dysregulation-of-the-mitochondrial-permeability-transition-pore
#12
Saranya NavaneethaKrishnan, Jesusa L Rosales, Ki-Young Lee
Cdk5, which plays a role in the development and progression of many human cancers, localizes in the mitochondria, a key determinant of apoptotic cell death. Cdk5 is upregulated in breast cancer cells but it was shown that Cdk5 loss increases chemotherapy-induced apoptosis. However, the molecular mechanism by which Cdk5 loss promotes cell death remains unclear. Here, we investigate the possibility that Cdk5 loss activates the intrinsic apoptotic pathway in breast cancer cells. We demonstrate that Cdk5-deficient breast cancer cells exhibit increased mitochondrial depolarization, mitochondrial ROS levels, and mitochondrial fragmentation that is associated with an increase in both intracellular Ca2+ level and calcineurin activity, and DRP1 S637 dephosphorylation...
January 19, 2018: Oncogene
https://www.readbyqxmd.com/read/29348189/cancer-stem-cell-phenotypes-in-er-breast-cancer-models-are-promoted-by-pelp1-aib1-complexes
#13
Thu H Truong, Hsiangyu Hu, Nuri A Temiz, Kyla Hagen, Brian J Girard, Nicholas J Brady, Kathryn L Schwertfeger, Carol A Lange, Julie H Ostrander
Proline, glutamic acid, and leucine rich protein 1 (PELP1) is overexpressed in approximately 80% of invasive breast tumors. PELP1 dynamically shuttles between the nucleus and cytoplasm, but is primarily nuclear in normal breast tissue. However, altered localization of PELP1 to the cytoplasm is an oncogenic event that promotes breast cancer initiation and progression. Herein, interacting partners unique to cytoplasmic PELP1 and the mechanisms by which these interactions promote oncogenic PELP1 signaling were sought...
January 18, 2018: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/29348172/-the-a-arrestin-arrdc3-suppresses-breast-carcinoma-invasion-by-regulating-g-protein-coupled-receptor-lysosomal-sorting-and-signaling
#14
Aleena K S Arakaki, Wen-An Pan, Huilan Lin, JoAnn Trejo
Aberrant G protein-coupled receptor (GPCR) expression and activation has been linked to tumor initiation, progression, invasion and metastasis. However, compared with other cancer drivers, the exploitation of GPCRs as potential therapeutic targets has been largely ignored, despite the fact that GPCRs are highly druggable. Therefore, to advance the potential status of GPCRs as therapeutic targets, it is important to understand how GPCRs function together with other cancer drivers during tumor progression. We now report that the alpha-arrestin domain-containing protein-3 (ARRDC3) acts as a tumor suppressor in part by controlling signaling and trafficking of the GPCR, protease-activated receptor-1 (PAR1)...
January 18, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29346310/ar-signaling-in-human-malignancies-prostate-cancer-and-beyond
#15
EDITORIAL
Emmanuel S Antonarakis
The notion that androgens and androgen receptor (AR) signaling are the hallmarks of prostate cancer oncogenesis and disease progression is generally well accepted. What is more poorly understood is the role of AR signaling in other human malignancies. This special issue of Cancers initially reviews the role of AR in advanced prostate cancer, and then explores the potential importance of AR signaling in other epithelial malignancies. The first few articles focus on the use of novel AR-targeting therapies in castration-resistant prostate cancer and the mechanisms of resistance to novel antiandrogens, and they also outline the interaction between AR and other cellular pathways, including PI3 kinase signaling, transcriptional regulation, angiogenesis, stromal factors, Wnt signaling, and epigenetic regulation in prostate cancer...
January 18, 2018: Cancers
https://www.readbyqxmd.com/read/29345736/palbociclib-in-combination-with-letrozole-as-first-line-treatment-for-advanced-breast-cancer-a-japanese-phase-ii-study
#16
Norikazu Masuda, Reiki Nishimura, Masato Takahashi, Kenichi Inoue, Shinji Ohno, Hiroji Iwata, Yuko Mori, Satoshi Hashigaki, Yasuaki Muramatsu, Takashi Nagasawa, Yoshiko Umeyama, Masakazu Toi
This single-arm, open-label, phase II study in 42 Japanese postmenopausal patients with estrogen receptor-positive/human epidermal growth factor receptor 2-negative (ER+/HER2-) advanced breast cancer evaluated the efficacy, safety, and pharmacokinetics of first-line palbociclib (125 mg once daily, 3 weeks on/1 week off) coadministered with letrozole (2.5 mg once daily). The primary endpoint of investigator-assessed 1-year progression-free survival probability was 75.0% (90% CI, 61.3%-84.4%), far surpassing the 40% lower limit of the 90% CI supporting efficacy...
January 18, 2018: Cancer Science
https://www.readbyqxmd.com/read/29345338/miat-lncrna-is-overexpressed-in-breast-cancer-and-its-inhibition-triggers-senescence-and-g1-arrest-in-mcf7-cell-line
#17
Firooz Jannat Alipoor, Malek Hossein Asadi, Masoud Torkzadeh-Mahani
Long non-coding RNAs are known as key regulators in the progression and metastasis of breast cancer. Miat originally has been considered as an lncRNA to be associated with a susceptibility to myocardial infarction. Here, we have detected the expression of Miat in different cancer cells and a series of breast tumor tissue. Miat expression was much higher in high-grade tumors compared to low-grade ones. Unlike P53 positive tumors, Miat expression was upregulated in ER, PR, Her2 positive tumor tissues. Knockdown Miat suppressed breast cancer cell proliferation and caused G1 arrest in cell cycle...
January 18, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29345290/role-of-nestin-expression-in-angiogenesis-and-breast-cancer-progression
#18
Aleksandra Nowak, Jędrzej Grzegrzółka, Alicja Kmiecik, Aleksandra Piotrowska, Rafał Matkowski, Piotr Dzięgiel
Nestin is an intermediate filament protein and a stem cell marker expressed in several tumours. There is growing evidence of an association between the expression level of nestin and the pathogenesis of triple-negative breast cancer (TNBC). Nestin is also expressed in newly forming tumour vessels and is a valuable marker of ongoing angiogenesis. In this study, we aimed to evaluate the prognostic value of nestin expression in breast tumour cells and to determine whether this expression influences angiogenesis...
February 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29345201/clinical-validation-of-nuclear-factor-kappa-b-expression-in-invasive-breast-cancer
#19
Anil Kumar Agrawal, Ewa Pielka, Artur Lipinski, Michal Jelen, Wojciech Kielan, Siddarth Agrawal
Breast cancer is the most commonly diagnosed cancer in Polish women. The expression of transcription nuclear factor kappa B, a key inducer of inflammatory response promoting carcinogenesis and cancer progression in breast cancer, is not well-established. We assessed the nuclear factor kappa B expression in a total of 119 invasive breast carcinomas and 25 healthy control samples and correlated this expression pattern with several clinical and pathologic parameters including histologic type and grade, tumor size, lymph node status, estrogen receptor status, and progesterone receptor status...
January 2018: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/29344897/modeling-of-interactions-between-cancer-stem-cells-and-their-microenvironment-predicting-clinical-response
#20
Mary E Sehl, Max S Wicha
Mathematical models of cancer stem cells are useful in translational cancer research for facilitating the understanding of tumor growth dynamics and for predicting treatment response and resistance to combined targeted therapies. In this chapter, we describe appealing aspects of different methods used in mathematical oncology and discuss compelling questions in oncology that can be addressed with these modeling techniques. We describe a simplified version of a model of the breast cancer stem cell niche, illustrate the visualization of the model, and apply stochastic simulation to generate full distributions and average trajectories of cell type populations over time...
2018: Methods in Molecular Biology
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