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Stem cell breast cancer

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https://www.readbyqxmd.com/read/28214331/pomc-maintains-tumor-initiating-properties-of-tumor-tissue-derived-long-term-cultured-breast-cancer-stem-cells
#1
Xiaoti Lin, Weiyu Chen, Fengqin Wei, Binhua P Zhou, Mien-Chie Hung, Xiaoming Xie
The identification and understanding of the molecular network of cancer stem cells (CSCs) have had a profound impact on our view of carcinogenesis and treatment strategy. Unfortunately, a major problem is that serial passages of CSCs from clinical solid tumor specimens currently are not available in any lab, and thus, reported data are difficult to confirm and intensively interrogated. Here, we have generated two tumor tissue-derived breast CSC (BCSC) lines that showed prolonged maintenance over 20 serial passages in vitro, while retaining their tumor-initiating biological properties...
February 18, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28214007/-impact-of-her2%C3%A2-and-brca1-2%C3%A2-status-in-high-dose-chemotherapy-and-autologous-stem-cells-transplantation-in-the-treatment-of-breast-cancer-the-institut-paoli-calmettes-experience
#2
Laurys Boudin, Christian Chabannon, Patrick Sfumato, Renaud Sabatier, François Bertucci, Carole Tarpin, Magali Provansal, Gilles Houvenaeghel, Eric Lambaudie, Agnes Tallet, Michel Resbeut, Emmanuelle Charafe-Jauffret, Boris Calmels, Claude Lemarie, Jean-Marie Boher, Jean-Marc Extra, Patrice Viens, Anthony Gonçalves
INTRODUCTION: Studies evaluating chemotherapy high dose chemotherapy with autologous haematopoietic stem cell transplantation (HDC-ACSH) in the treatment of metastatic (MBC), locally advanced (LABC) and inflammatory (IBC) breast cancer have in common lack of biomarker information, in particular the HER2 status. PATIENTS AND METHODS: All consecutive female patients treated for breast cancer with HDC and AHSCT at Institut Paoli Calmettes between 2003 and 2012 were included...
February 14, 2017: Bulletin du Cancer
https://www.readbyqxmd.com/read/28211214/anti-cancer-stem-cell-activity-of-a-hedgehog-inhibitor-gant61-in-estrogen-receptor-positive-breast-cancer-cells
#3
Junichi Kurebayashi, Yoshikazu Koike, Yusuke Ohta, Wataru Saitoh, Tetsumasa Yamashita, Naoki Kanomata, Takuya Moriya
Estradiol (E2) increases not only the cell growth but also cancer stem cell (CSC) proportion in estrogen receptor (ER)-positive breast cancer cells. It was suggested that the non-canonical hedgehog (Hh) pathway activated by E2 plays an important role in the regulation of CSC proportion in ER-positive breast cancer cells. We studied anti-CSC activity of a non-canonical Hh inhibitor GANT61 in ER-positive breast cancer cells. Effects of GANT61 on the cell growth, cell cycle progression, apoptosis and CSC proportion were investigated in four ER-positive breast cancer cell lines...
February 17, 2017: Cancer Science
https://www.readbyqxmd.com/read/28210556/are-breast-cancer-stem-cells-the-key-to-resolving-clinical-issues-in-breast-cancer-therapy
#4
REVIEW
Hidetaka Shima, Akimitsu Yamada, Takashi Ishikawa, Itaru Endo
Despite the dramatic advances in breast cancer treatment over the past two decades, it is still the most common malignancies in women. One of the reasons patients succumb to breast cancer is treatment resistance leading to metastasis and recurrence. Recently, cancer stem cells (CSCs) have been suggested as a cause of metastasis and recurrence in several cancers because of their unique characteristics, including self-renewal, pluripotency, and high proliferative ability. Increasing evidence has implicated breast cancer stem cells (BCSCs) as essential for tumor development, progression, recurrence, and treatment resistance...
February 2017: Gland Surgery
https://www.readbyqxmd.com/read/28209368/correlation-of-micro-vessel-density-and-c-myc-expression-in-breast-tumor-of-mice-following-mesenchymal-stem-cell-therapy
#5
Maryam Adelipour, Fatemeh Babaei, Mohammadreza Mirzababaei, Abdolamir Allameh
Stem cell therapy for degenerative diseases has been established; however there are controversies over the treatment of solid tumors with stem cell transplantation. In the present study, the anti-tumor action of mesenchymal stem cells (MSCs) has been examined in a mouse model of breast cancer with emphasize on tumor growth, angiogenesis and c-Myc expression in breast tumors. For this purpose, MSCs were isolated from bone marrow of Balb/c mice and characterized. A Balb/c mouse model of breast cancer was developed and subjected to cell therapy intra venous (I...
January 30, 2017: Tissue & Cell
https://www.readbyqxmd.com/read/28206960/an-autocrine-paracrine-circuit-of-growth-differentiation-factor-gdf-15-has-a-role-for-maintenance-of-breast-cancer-stem-like-cells
#6
Asako Sasahara, Kana Tominaga, Tatsunori Nishimura, Masao Yano, Etsuko Kiyokawa, Miki Noguchi, Masakuni Noguchi, Hajime Kanauchi, Toshihisa Ogawa, Hiroshi Minato, Keiichiro Tada, Yasuyuki Seto, Arinobu Tojo, Noriko Gotoh
Cancer stem cells are thought to be responsible for tumor growth, recurrence, and resistance to conventional cancer therapy. However, it is still unclear how they are maintained in tumor tissues. Here, we show that the growth differentiation factor 15 (GDF15), a member of the TGFβ family, may maintain cancer stem-like cells in breast cancer tissues by inducing its own expression in an autocrine/paracrine manner. We found that GDF15, but not TGFβ, increased tumor sphere formation in several breast cancer cell lines and patient-derived primary breast cancer cells...
February 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28202676/harnessing-the-bmp-signaling-pathway-to-control-the-formation-of-cancer-stem-cells-by-effects-on-epithelial-to-mesenchymal-transition
#7
REVIEW
Ashish Bosukonda, William D Carlson
Cancer stem cells (CSCs) persist in tumors as a distinct population and may be causative in metastasis and relapse. CSC-rich tumors are associated with higher rates of metastasis and poor patient prognosis. Targeting CSCs therapeutically is challenging, since they seem to be resistant to standard chemotherapy. We have shown that a novel peptide agonist of bone morphogenetic protein (BMP) signaling, P123, is capable of inhibiting the growth of primary tumor cells by interacting with type I receptors selectively [activin receptor-like kinase 2 (ALK2) and ALK3, but not ALK6] and type II BMP receptors, activating SMAD 1/5/8 signaling and controlling the cell cycle pathway...
February 8, 2017: Biochemical Society Transactions
https://www.readbyqxmd.com/read/28202523/cancer-stem-cells-regulate-cancer-associated-fibroblasts-via-activation-of-hedgehog-signaling-in-mammary-gland-tumors
#8
Giovanni Valenti, Hazel M Quinn, Guus Jje Heynen, Linxiang Lan, Jane D Holland, Regina Vogel, Annika Wulf-Goldenberg, Walter Birchmeier
Many tumors display intracellular heterogeneity, with subsets of cancer stem cells (CSC) that sustain tumor growth, recurrence, and therapy resistance. Cancer associated fibroblasts (CAF) have been shown to support and regulate CSC function. Here we investigated the interactions between CSCs and CAFs in mammary gland tumors driven by combined activation of Wnt/β-catenin and Hgf/Met signaling in mouse mammary epithelial cells. In this setting, CSCs secreted the hedgehog ligand SHH, which regulated CAFs via paracrine activation of Hedgehog signaling...
February 15, 2017: Cancer Research
https://www.readbyqxmd.com/read/28202520/evolution-of-cancer-stem-like-cells-in-endocrine-resistant-metastatic-breast-cancers-is-mediated-by-stromal-microvesicles
#9
Pasquale Sansone, Marjan Berishaj, Vinagolu K Rajasekhar, Claudio Ceccarelli, Qing Chang, Antonio Strillacci, Claudia Savini, Lauren Shapiro, Robert Bowman, Chiara Mastroleo, Sabrina De Carolis, Laura Daly, Alberto Benito-Martin, Fabiana Perna, Nicola Fabbri, John H Healey, Enzo Spisni, Monica Cricca, David Lyden, Massimiliano Bonafé, Jacqueline Bromberg
The hypothesis that microvesicle (MV)-mediated microRNA transfer converts non-cancer stem cells into cancer stem cells (CSCs) leading to therapy resistance remains poorly investigated. Here we provide direct evidence supporting this hypothesis, by demonstrating how MV derived from cancer associated fibroblasts (CAF) transfer miR-221 to promote hormonal therapy resistance (HTR) in models of luminal breast cancer. We determined that CAF-derived MV horizontally transferred miR221 to tumor cells and, in combination with hormone therapy activated an ERlo/Notchhi feed-forward loop responsible for the generation of CD133hi CSC...
February 15, 2017: Cancer Research
https://www.readbyqxmd.com/read/28202042/hoxc8-regulates-self-renewal-differentiation-and-transformation-of-breast-cancer-stem-cells
#10
Mansi Shah, Ryan Cardenas, Belinda Wang, Jenny Persson, Nigel P Mongan, Anna Grabowska, Cinzia Allegrucci
BACKGROUND: Homeobox genes are master regulators of cell fate during embryonic development and their expression is altered in cancer. By regulating the balance between cell proliferation and differentiation, they maintain homeostasis of normal tissues. Here, we screened the expression of homeobox genes in mammary stem cells to establish their role in stem cells transformation in breast cancer. METHODS: Using a Homeobox Genes PCR array, we screened 83 homeobox genes in normal cancer breast stem/progenitor cells isolated by flow cytometry...
February 16, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/28199964/blockade-of-rho-associated-protein-kinase-rock-inhibits-the-contractility-and-invasion-potential-of-cancer-stem-like-cells
#11
Srisathya Srinivasan, Vandhana Ashok, Sagarajit Mohanty, Alakesh Das, Sreya Das, Sushant Kumar, Shamik Sen, Rahul Purwar
Recent studies have implicated the roles of cancer stem like cells (CSCs) in cancer metastasis. However, very limited knowledge exists at the molecular and cellular level to target CSCs for prevention of cancer metastasis. In this study, we examined the roles of contractile dynamics of CSCs in cell invasion and delineated the underlying molecular mechanisms of their distinct cell invasion potential. Using de-adhesion assay and atomic force microscopy, we show that CSCs derived from melanoma and breast cancer cell lines exhibit increased contractility compared to non-CSCs across all tumor types...
February 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28197635/fluid-shear-stress-induces-cancer-stem-cell-like-phenotype-in-mcf7-breast-cancer-cell-line-without-inducing-epithelial-to-mesenchymal-transition
#12
Ursula L Triantafillu, Seungjo Park, Nikki L Klaassen, Andrew D Raddatz, Yonghyun Kim
Metastasis is the leading cause of cancer deaths due to the spread of cancer cells through the blood vessels and the subsequent formation of secondary tumors. Metastasizing cancer cells in the human vasculature are called circulating tumor cells (CTCs) and are characterized to express the epithelial cell adhesion molecule (EpCAM). They are further known to survive physiological fluid shear stress (FSS) conditions. However, the effect of FSS on CTC molecular phenotype, such as the epithelial to mesenchymal transition (EMT) and cancer stem cell (CSC) expression, has not been extensively studied...
January 30, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28194015/induced-p53-loss-in-mouse-luminal-cells-causes-clonal-expansion-and-development-of-mammary-tumours
#13
Luwei Tao, Dongxi Xiang, Ying Xie, Roderick T Bronson, Zhe Li
Most breast cancers may have a luminal origin. TP53 is one of the most frequently mutated genes in breast cancers. However, how p53 deficiency contributes to breast tumorigenesis from luminal cells remains elusive. Here we report that induced p53 loss in Krt8(+) mammary luminal cells leads to their clonal expansion without directly affecting their luminal identity. All induced mice develop mammary tumours with 9qA1 (Yap1) and/or 6qA2 (Met) amplification(s). These tumours exhibit a mammary stem cell (MaSC)-like expression signature and most closely resemble claudin-low breast cancer...
February 13, 2017: Nature Communications
https://www.readbyqxmd.com/read/28193239/buformin-inhibits-the-stemness-of-erbb-2-overexpressing-breast-cancer-cells-and-premalignant-mammary-tissues-of-mmtv-erbb-2-transgenic-mice
#14
Amanda B Parris, Qingxia Zhao, Erin W Howard, Ming Zhao, Zhikun Ma, Xiaohe Yang
BACKGROUND: Metformin, an FDA-approved drug for the treatment of Type II diabetes, has emerged as a promising anti-cancer agent. Other biguanide analogs, including buformin and phenformin, are suggested to have similar properties. Although buformin was shown to reduce mammary tumor burden in carcinogen models, the anti-cancer effects of buformin on different breast cancer subtypes and the underlying mechanisms remain unclear. Therefore, we aimed to investigate the effects of buformin on erbB-2-overexpressing breast cancer with in vitro and in vivo models...
February 13, 2017: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/28192421/g1-cyclins-link-proliferation-pluripotency-and-differentiation-of-embryonic-stem-cells
#15
Lijun Liu, Wojciech Michowski, Hiroyuki Inuzuka, Kouhei Shimizu, Naoe Taira Nihira, Joel M Chick, Na Li, Yan Geng, Alice Y Meng, Alban Ordureau, Aleksandra Kołodziejczyk, Keith L Ligon, Roderick T Bronson, Kornelia Polyak, J Wade Harper, Steven P Gygi, Wenyi Wei, Piotr Sicinski
Progression of mammalian cells through the G1 and S phases of the cell cycle is driven by the D-type and E-type cyclins. According to the current models, at least one of these cyclin families must be present to allow cell proliferation. Here, we show that several cell types can proliferate in the absence of all G1 cyclins. However, following ablation of G1 cyclins, embryonic stem (ES) cells attenuated their pluripotent characteristics, with the majority of cells acquiring the trophectodermal cell fate. We established that G1 cyclins, together with their associated cyclin-dependent kinases (CDKs), phosphorylate and stabilize the core pluripotency factors Nanog, Sox2 and Oct4...
February 13, 2017: Nature Cell Biology
https://www.readbyqxmd.com/read/28188793/activation-of-wnt-signaling-pathway-by-af1q-enriches-stem-like-population-and-enhance-mammosphere-formation-of-breast-cells
#16
Charlotte Olivia Tse, Soojin Kim, Jino Park
Wnt signaling pathway is believed to be responsible for control over various types of stem cells and may act as a niche factor to maintain stem cells in a self-renewing state. Moreover, dysregulated Wnt signaling pathway is strongly associated with several diseases including cancer. Previously, we have shown that AF1q associates with a poor prognosis in leukemia, myelodysplastic syndromes, multiple myeloid, ovarian cancer, and breast cancer. Also, AF1q plays a pivotal role as an oncogene and metastasis enhancer in breast cancer via activation of Wnt signaling pathway...
February 8, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28185193/activation-and-differentiation-of-mesenchymal-stem-cells
#17
Pravin J Mishra, Debabrata Banerjee
Mesenchymal stem cells (MSCs) are multipotent cells and exhibit two main characteristics that define stem cells: self-renewal and differentiation. MSCs can migrate to sites of injury, inflammation, and tumor. Moreover, MSCs undergo myofibroblast like differentiation, including increased production of α-SMA in response to transforming growth factor-β (TGF-β), a growth factor commonly secreted by tumor cells to evade immune surveillance. Based on our previous finding hMSCs become activated and resemble carcinoma-associated myofibroblasts upon prolonged exposure to conditioned medium from MDAMB231 human breast cancer cells...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28179988/ips-derived-mscs-from-an-expandable-bank-to-deliver-a-prodrug-converting-enzyme-that-limits-growth-and-metastases-of-human-breast-cancers
#18
M Ullah, Y Kuroda, T J Bartosh, F Liu, Q Zhao, C Gregory, R Reger, J Xu, R H Lee, D J Prockop
One attractive strategy to treat cancers is to deliver an exogenous enzyme that will convert a non-toxic compound to a highly toxic derivative. The strategy was tested with viral vectors but was disappointing because the efficiency of transduction into tumor cells was too low. Recent reports demonstrated that the limitation can be addressed by using tissue-derived mesenchymal stromal cells (MSCs) to deliver enzyme/prodrug systems that kill adjacent cancer cells through bystander effects. Here we addressed the limitation that tissue-derived MSCs vary in their properties and are difficult to generate in the large numbers needed for clinical applications...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28177244/replacing-d-glucosamine-with-its-l-enantiomer-in-glycosylated-antitumor-ether-lipids-gaels-retains-cytotoxic-effects-against-epithelial-cancer-cells-and-cancer-stem-cells
#19
Makanjuola Ogunsina, Pranati Samadder, Temilolu Idowu, Gilbert Arthur, Frank M Schweizer
We describe metabolically inert L-glucosamine-based L-GAELs that retain the cytotoxic effects of the D-GAELs including the ability to kill BT-474 breast cancer stem cells (CSCs). When compared to adriamycin, cisplatin and the anti CSC agent salinomycin, L-GAELs display superior activity to kill cancer stem cells (CSCs). Mode of action studies indicate that L-GAELs like the D-GAELs kill cells via an apoptosis-independent mechanism that was not due to membranolytic effects.
February 8, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28174483/dual-effect-of-wisp-1-in-diverse-pathological-processes
#20
Mengmeng Feng, Shuqin Jia
Wnt-1 inducible signaling pathway-1 (WISP-1), also known as CCN-4, belongs to the connective tissue growth factor (CTGF) family. WISP-1 is primarily expressed in embryonic stem cells and is involved in adult organ development. WISP-1 participates in many cellular processes, including proliferation, differentiation, apoptosis and adhesion. In addition, WISP-1 plays an important role in diverse pathophysiological processes, such as embryonic development, inflammation, injury repairs and cancers. Recent studies showed that WISP-1 was highly correlated with tumor progression and malignant transformation, whereas it played an oncogenic role in colorectal cancer, cholangiocarcinoma, hepatocellular carcinoma and breast cancer...
December 2016: Chinese Journal of Cancer Research, Chung-kuo Yen Cheng Yen Chiu
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