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Breast Cancer stem cell

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https://www.readbyqxmd.com/read/28927044/isolation-and-characterization-of-adult-mammary-stem-cells-from-breast-cancer-adjacent-tissues
#1
Ai-Ping Shi, Zhi-Min Fan, Ke-Wei Ma, Yan-Fang Jiang, Lei Wang, Ke-Wei Zhang, Shi-Bo Fu, Ning Xu, Zhi-Ru Zhang
Normal adult mammary stem cells (AMSCs) are promising sources for breast reconstruction, particularly following the resection of breast tumors. However, carcinogenic events can potentially convert normal AMSCs to cancer stem cells, posing a safety concern for the use of AMSCs for clinical tissue regeneration. In the present study, AMSCs and autologous primary breast cancer cells were isolated and compared for their ability to differentiate, their gene expression profile, and their potential to form tumors in vivo...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28925391/ezh2-contributes-to-the-response-to-parp-inhibitors-through-its-parp-mediated-poly-adp-ribosylation-in-breast-cancer
#2
H Yamaguchi, Y Du, K Nakai, M Ding, S-S Chang, J L Hsu, J Yao, Y Wei, L Nie, S Jiao, W-C Chang, C-H Chen, Y Yu, G N Hortobagyi, M-C Hung
Inhibitors against poly (ADP-ribose) polymerase (PARP) are promising targeted agents currently used to treat BRCA-mutant ovarian cancer and are in clinical trials for other cancer types, including BRCA-mutant breast cancer. To enhance the clinical response to PARP inhibitors (PARPis), understanding the mechanisms underlying PARPi sensitivity is urgently needed. Here, we show enhancer of zeste homolog 2 (EZH2), an enzyme that catalyzes H3 lysine trimethylation and associates with oncogenic function, contributes to PARPi sensitivity in breast cancer cells...
September 18, 2017: Oncogene
https://www.readbyqxmd.com/read/28924377/current-progresses-of-single-cell-dna-sequencing-in-breast-cancer-research
#3
REVIEW
Jianlin Liu, Ragini Adhav, Xiaoling Xu
Breast cancers display striking genetic and phenotypic diversities. To date, several hypotheses are raised to explain and understand the heterogeneity, including theories for cancer stem cell (CSC) and clonal evolution. According to the CSC theory, the most tumorigenic cells, while maintaining themselves through symmetric division, divide asymmetrically to generate non-CSCs with less tumorigenic and metastatic potential, although they can also dedifferentiate back to CSCs. Clonal evolution theory recapitulates that a tumor initially arises from a single cell, which then undergoes clonal expansion to a population of cancer cells...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/28923575/radioresistance-of-the-breast-tumor-is-highly-correlated-to-its-level-of-cancer-stem-cell-and-its-clinical-implication-for-breast-irradiation
#4
Xiangrong Sharon Qi, Frank Pajonk, Susan McCloskey, Daniel A Low, Patrick Kupelian, Michael Steinberg, Ke Sheng
BACKGROUND AND PURPOSE: Growing evidence suggested the coexistence of cancer stem cells (CSCs) within solid tumors. We aimed to study radiosensitivity parameters for the CSCs and differentiated tumor cells (TCs) and the correlation of the fractions of CSCs to the overall tumor radioresistance. MATERIAL AND METHODS: Surviving fractions of breast cancer cell lines were analyzed using a dual-compartment Linear-quadratic model with independent fitting parameters: radiosensitive αTC, βTC, αCSC, βCSC, and fraction of CSCs f...
September 15, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28923385/targeting-breast-cancer-stem-cells-by-novel-hdac3-selective-inhibitors
#5
Hao-Yu Hsieh, Hsiao-Ching Chuang, Fang-Hsiu Shen, Kinjal Detroja, Ling-Wei Hsin, Ching-Shih Chen
Although histone deacetylase (HDAC) inhibitors have been known to suppress the cancer stem cell (CSC) population in multiple types of cancer cells, it remains unclear which HDAC isoforms and corresponding mechanisms contribute to this anti-CSC activity. Pursuant to our previous finding that HDAC8 regulates CSCs in triple-negative breast cancer (TNBC) cells by targeting Notch1 stability, we investigated related pathways and found HDAC3 to be mechanistically linked to CSC homeostasis by increasing β-catenin expression through the Akt/GSK3β pathway...
September 1, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28920712/maximized-nanodrug-loaded-mesenchymal-stem-cells-by-a-dual-drug-loaded-mode-for-the-systemic-treatment-of-metastatic-lung-cancer
#6
Sen Yao, Xuqian Li, Jingxuan Liu, Yuqing Sun, Zhuanhe Wang, Yanyan Jiang
Mesenchymal stem cells (MSCs), exhibiting tumor-tropic and migratory potential, can serve as cellular carriers to improve the effectiveness of anticancer agents. However, several challenges, such as the safety issue, the limited drug loading, the conservation of stemness and migration of MSCs, still remain in the MSC-based delivery system. In the present study, a novel nano-engineered MSC delivery system was established by loading doxorubicin (DOX)-polymer conjugates for the systemic treatment of pulmonary metastasis of breast cancer...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/28919264/prolactin-alters-the-mammary-epithelial-hierarchy-increasing-progenitors-and-facilitating-ovarian-steroid-action
#7
Kathleen A O'Leary, Michael P Shea, Stephanie Salituro, Courtney E Blohm, Linda A Schuler
Hormones drive mammary development and function and play critical roles in breast cancer. Epidemiologic studies link prolactin (PRL) to increased risk for aggressive cancers that express estrogen receptor α (ERα). However, in contrast to ovarian steroids, PRL actions on the mammary gland outside of pregnancy are poorly understood. We employed the transgenic NRL-PRL model to examine the effects of PRL alone and with defined estrogen/progesterone exposure on stem/progenitor activity and regulatory networks that drive epithelial differentiation...
September 7, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28914785/hsp90%C3%AE-mediates-bmi1-expression-in-breast-cancer-stem-progenitor-cells-through-facilitating-nuclear-translocation-of-c-myc-and-ezh2
#8
Yueh-Chun Lee, Wen-Wei Chang, Yi-Ying Chen, Yu-Hung Tsai, Ying-Hsiang Chou, Hsien-Chun Tseng, Hsin-Lin Chen, Chun-Chieh Wu, Ju Chang-Chien, Hsueh-Te Lee, Huei-Fan Yang, Bing-Yen Wang
Heat shock protein 90 (Hsp90) is a molecular chaperone that facilitates the correct folding and functionality of its client protein. Numerous Hsp90-client proteins are involved in cancer development. Thus, Hsp90 inhibitors have potential applications as anti-cancer drugs. We previously discovered that Hsp90α expression increased in breast cancer stem cells (BCSCs), which can initiate tumorigenesis and metastasis and resist treatment. In the present study, we further demonstrated that 17-dimethylaminoethylamino-17-demethoxygeldanamycin (17-DMAG), an inhibitor of Hsp90, could suppress the self-renewal of BCSCs by downregulating B lymphoma Mo-MLV insertion region 1 homolog (BMI1), a polycomb family member with oncogenic activity in breast cancer...
September 15, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28914645/notch-inhibitors-and-their-role-in-the-treatment-of-triple-negative-breast-cancer-promises-and-failures
#9
Marzia Locatelli, Giuseppe Curigliano
PURPOSE OF REVIEW: Notch signaling is a highly evolutionarily conserved cell-to-cell communication system that is involved in a number of pivotal cellular processes, such as development, stem cell maintenance, cell fate specification, differentiation, proliferation, and death. Much progress has been made in understanding Notch signaling. This review will focus on the role of canonical Notch signaling pathway in breast cancer cause and progressing. RECENT FINDINGS: In this review, we will discuss the results of the studies using drugs, which target the Notch pathway...
September 12, 2017: Current Opinion in Oncology
https://www.readbyqxmd.com/read/28912898/inhibition-of-bone-marrow-derived-mesenchymal-stem-cells-homing-towards-triple-negative-breast-cancer-microenvironment-using-an-anti-pdgfr%C3%AE-aptamer
#10
Simona Camorani, Billy Samuel Hill, Raffaela Fontanella, Adelaide Greco, Matteo Gramanzini, Luigi Auletta, Sara Gargiulo, Sandra Albanese, Enrico Lucarelli, Laura Cerchia, Antonella Zannetti
Bone marrow-derived mesenchymal stem cells (BM-MSCs) are shown to participate in tumor progression by establishing a favorable tumor microenvironment (TME) that promote metastasis through a cytokine networks. However, the mechanism of homing and recruitment of BM-MSCs into tumors and their potential role in malignant tissue progression is poorly understood and controversial. Here we show that BM-MSCs increase aggressiveness of triple-negative breast cancer (TNBC) cell lines evaluated as capability to migrate, invade and acquire stemness markers...
2017: Theranostics
https://www.readbyqxmd.com/read/28912133/use-of-crispr-modified-human-stem-cell-organoids-to-study-the-origin-of-mutational-signatures-in-cancer
#11
Jarno Drost, Ruben van Boxtel, Francis Blokzijl, Tomohiro Mizutani, Nobuo Sasaki, Valentina Sasselli, Joep de Ligt, Sam Behjati, Judith E Grolleman, Tom van Wezel, Serena Nik-Zainal, Roland P Kuiper, Edwin Cuppen, Hans Clevers
Mutational processes underlie cancer initiation and progression. Signatures of these processes in cancer genomes may explain cancer etiology, and hold diagnostic and prognostic value. Here, we develop a strategy that can be used to explore the origin of cancer-associated mutational signatures. We used CRISPR/Cas9 technology to delete key DNA repair genes in human colon organoids, followed by delayed sub-cloning and whole-genome sequencing. We found that mutation accumulation in organoids deficient in the mismatch repair gene MLH1 is driven by replication errors and accurately models the mutation profiles observed in mismatch repair-deficient colorectal cancers...
September 14, 2017: Science
https://www.readbyqxmd.com/read/28904399/semaphorin-3%C3%A2-c-drives-epithelial-to-mesenchymal-transition-invasiveness-and-stem-like-characteristics-in-prostate-cells
#12
Kevin J Tam, Daniel H F Hui, Wilson W Lee, Mingshu Dong, Tabitha Tombe, Ivy Z F Jiao, Shahram Khosravi, Ario Takeuchi, James W Peacock, Larissa Ivanova, Igor Moskalev, Martin E Gleave, Ralph Buttyan, Michael E Cox, Christopher J Ong
Prostate cancer (PCa) is among the most commonly-occurring cancers worldwide and a leader in cancer-related deaths. Local non-invasive PCa is highly treatable but limited treatment options exist for those with locally-advanced and metastatic forms of the disease underscoring the need to identify mechanisms mediating PCa progression. The semaphorins are a large grouping of membrane-associated or secreted signalling proteins whose normal roles reside in embryogenesis and neuronal development. In this context, semaphorins help establish chemotactic gradients and direct cell movement...
September 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28903367/exploratory-investigation-of-psca-protein-expression-in-primary-breast-cancer-patients-reveals-a-link-to-her2-neu-overexpression
#13
Theresa Link, Friederike Kuithan, Armin Ehninger, Jan Dominik Kuhlmann, Michael Kramer, Andreas Werner, Axel Gatzweiler, Barbara Richter, Gerhard Ehninger, Gustavo Baretton, Michael Bachmann, Pauline Wimberger, Katrin Friedrich
BACKGROUND: Prostate stem cell antigen (PSCA) has been suggested as biomarker and therapeutic target for prostate cancer. Recent advances showed that PSCA is up-regulated in other cancer entities, such as bladder or pancreatic cancer. However, the clinical relevance of PSCA-expression in breast cancer patients has not yet been established and is therefore addressed by the current study. METHODS: PSCA-protein expression was assessed in 405 breast cancer patients, using immunohistochemistry (PSCA antibody MB1) and tissue microarrays...
August 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28903357/intratumoral-acidosis-fosters-cancer-induced-bone-pain-through-the-activation-of-the-mesenchymal-tumor-associated-stroma-in-bone-metastasis-from-breast-carcinoma
#14
Gemma Di Pompo, Silvia Lemma, Lorenzo Canti, Nadia Rucci, Marco Ponzetti, Costantino Errani, Davide Maria Donati, Shonagh Russell, Robert Gillies, Tokuhiro Chano, Nicola Baldini, Sofia Avnet
Cancer-induced bone pain (CIBP) is common in patients with bone metastases (BM), significantly impairing quality of life. The current treatments for CIBP are limited since they are often ineffective. Local acidosis derived from glycolytic carcinoma and tumor-induced osteolysis is only barely explored cause of pain. We found that breast carcinoma cells that prefer bone as a metastatic site have very high extracellular proton efflux and expression of pumps/ion transporters associated with acid-base balance (MCT4, CA9, and V-ATPase)...
August 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28903350/zeb1-confers-stem-cell-like-properties-in-breast-cancer-by-targeting-neurogenin-3
#15
Chen Zhou, Huimin Jiang, Zhen Zhang, Guomin Zhang, Hang Wang, Quansheng Zhang, Peiqing Sun, Rong Xiang, Shuang Yang
Cancer stem cells (CSCs) are a subpopulation of cancer cells believed to be implicated in cancer initiation, progression, and recurrence. Here, we report that ectopic expression of zinc finger E-box binding homeobox 1 protein (ZEB1) results in the acquisition of CSC properties by breast cancer cells, leading to tumor initiation and progression in vitro and in vivo. The neurogenin 3 gene (Ngn3) is a bona fide target of ZEB1, and its repression is a key factor contributing to ZEB1-induced cancer cell stemness...
August 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28901484/molecular-iodine-impairs-chemoresistance-mechanisms-enhances-doxorubicin-retention-and-induces-downregulation-of-the-cd44-cd24-and-e-cadherin-vimentin-subpopulations-in-mcf-7-cells-resistant-to-low-doses-of-doxorubicin
#16
Alexander Bontempo, Brenda Ugalde-Villanueva, Evangelina Delgado-González, Ángel Luis Rodríguez, Carmen Aceves
One of the most dreaded clinical events for an oncology patient is resistance to treatment. Chemoresistance is a complex phenomenon based on alterations in apoptosis, the cell cycle and drug metabolism, and it correlates with the cancer stem cell phenotype and/or epithelial-mesenchymal transition. Molecular iodine (I2) exerts an antitumor effect on different types of iodine-capturing neoplasms by its oxidant/antioxidant properties and formation of iodolipids. In the present study, wild-type breast carcinoma cells (MCF-7/W) were treated chronically with 10 nM doxorubicin (DOX) to establish a low-dose DOX-resistant mammary cancer model (MCF-7/D)...
September 1, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28900173/fgfr-inhibitor-azd4547-impedes-the-stemness-of-mammary-epithelial-cells-in-the-premalignant-tissues-of-mmtv-erbb2-transgenic-mice
#17
Qingxia Zhao, Amanda B Parris, Erin W Howard, Ming Zhao, Zhikun Ma, Zhiying Guo, Ying Xing, Xiaohe Yang
The fibroblast growth factor receptor (FGFR) family of receptor tyrosine kinases (RTKs) regulates signaling pathways involved in cell proliferation and differentiation. Currently, the anti-tumor properties of FGFR inhibitors are being tested in preclinical and clinical studies. Nevertheless, reports on FGFR inhibitor-mediated breast cancer prevention are sparse. In this study, we investigated the anti-cancer benefits of AZD4547, an FGFR1-3 inhibitor, in ErbB2-overexpressing breast cancer models. AZD4547 (1-5 µM) demonstrated potent anti-proliferative effects, inhibition of stemness, and suppression of FGFR/RTK signaling in ErbB2-overexpressing human breast cancer cells...
September 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28894585/cell-based-immunotherapy-in-stage-iiia-inflammatory-breast-cancer-with-declining-innate-immunity-following-successive-chemotherapies-a-case-report
#18
Ranganathan Chidambaram, Hiroshi Terunuma, Madasamy Balamurugan, Vidyasagar Devaprasad Dedeepiya, Premkumar Sumana, Rajappa Senthilkumar, Mathaiyan Rajmohan, Ramalingam Karthick, Senthilkumar Preethy, Samuel J K Abraham
Cancer stem cells in breast cancer migrating to the bone marrow may cause future metastasis, particularly during periods of decreased immunity. Natural killer (NK) cells have a role in immune surveillance and are able to target cancer stem cells. The present study reported a case in which NK cell-based autologous immune enhancement therapy was used combined with conventional treatments in a patient with stage IIIA breast cancer, yielding >28 months of disease-free survival. However, there was a gradual decline in the in vitro expansion of NK cells with subsequent chemotherapeutic treatments...
September 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28892021/near-infrared-triggered-photodynamic-therapy-toward-breast-cancer-cells-using-dendrimer-functionalized-upconversion-nanoparticles
#19
Bing-Yen Wang, Ming-Liang Liao, Guan-Ci Hong, Wen-Wei Chang, Chih-Chien Chu
Water-soluble upconversion nanoparticles (UCNPs) that exhibit significant ultraviolet, blue, and red emissions under 980-nm laser excitation were successfully synthesized for performing near infrared (NIR)-triggered photodynamic therapy (PDT). The lanthanide-doped UCNPs bearing oleate ligands were first exchanged by citrates to generate polyanionic surfaces and then sequentially encapsulated with NH₂-terminated poly(amido amine) (PAMAM) dendrimers (G4) and chlorine6 (Ce6) using a layer-by-layer (LBL) absorption strategy...
September 11, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28891935/alteration-of-mammary-gland-development-and-gene-expression-by-in-utero-exposure-to-cadmium
#20
Daniela A Parodi, Morgan Greenfield, Claire Evans, Anna Chichura, Alexandra Alpaugh, James Williams, Kedra C Cyrus, Mary Beth Martin
Environmental exposure to estrogens and estrogen like contaminants during early development is thought to contribute to the risk of developing breast cancer primarily due to an early onset of puberty; however, exposure during key developing windows may also influence the risk of developing the disease. The goal of this study was to ask whether in utero exposure to the metalloestrogen cadmium alters mammary gland development due to acceleration of puberty onset or to an effect on early development of the mammary gland...
September 9, 2017: International Journal of Molecular Sciences
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