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Mammary stem cell

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https://www.readbyqxmd.com/read/28428406/double-duty-for-mammary-stem-cell-niche
#1
EDITORIAL
Beverly A Purnell
No abstract text is available yet for this article.
April 21, 2017: Science
https://www.readbyqxmd.com/read/28423599/re-expression-of-mir-200c-suppresses-proliferation-colony-formation-and-in-vivo-tumor-growth-of-murine-claudin-low-mammary-tumor-cells
#2
Robert Jones, Katrina Watson, Anthony Bruce, Sarah Nersesian, Jenna Kitz, Roger Moorehead
Claudin-low breast cancer is a relatively rare breast cancer subtype. These cancers are typically ER-/PR-/HER2- and express high levels of mesenchymal genes as well as genes associated with inflammation, angiogenesis and stem cell function. In addition to alterations in gene expression, it was recently demonstrated that claudin-low breast cancers express very low levels of the miR-200 family of miRNAs. Given that each miRNA can regulate tens, hundreds or even thousands of genes, miRNAs are being evaluated as therapeutic targets...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28412966/tfap2a-is-a-component-of-the-zeb1-2-network-that-regulates-tgfb1-induced-epithelial-to-mesenchymal-transition
#3
Yoana Dimitrova, Andreas J Gruber, Nitish Mittal, Souvik Ghosh, Beatrice Dimitriades, Daniel Mathow, William Aaron Grandy, Gerhard Christofori, Mihaela Zavolan
BACKGROUND: The transition between epithelial and mesenchymal phenotypes (EMT) occurs in a variety of contexts. It is critical for mammalian development and it is also involved in tumor initiation and progression. Master transcription factor (TF) regulators of this process are conserved between mouse and human. METHODS: From a computational analysis of a variety of high-throughput sequencing data sets we initially inferred that TFAP2A is connected to the core EMT network in both species...
April 17, 2017: Biology Direct
https://www.readbyqxmd.com/read/28402365/vectorization-of-ultrasound-responsive-nanoparticles-in-placental-mesenchymal-stem-cells-for-cancer-therapy
#4
Juan L Paris, Paz de la Torre, M Victoria Cabañas, Miguel Manzano, Montserrat Grau, Ana I Flores, María Vallet-Regí
A new platform constituted by engineered responsive nanoparticles transported by human mesenchymal stem cells is here presented as a proof of concept. Ultrasound-responsive mesoporous silica nanoparticles are coated with polyethylenimine to favor their effective uptake by decidua-derived mesenchymal stem cells. The responsive-release ability of the designed nanoparticles is confirmed, both in vial and in vivo. In addition, this capability is maintained inside the cells used as carriers. The migration capacity of the nanoparticle-cell platform towards mammary tumors is assessed in vitro...
April 12, 2017: Nanoscale
https://www.readbyqxmd.com/read/28394329/a-stemness-related-zeb1-msrb3-axis-governs-cellular-pliancy-and-breast-cancer-genome-stability
#5
Anne-Pierre Morel, Christophe Ginestier, Roxane M Pommier, Olivier Cabaud, Emmanuelle Ruiz, Julien Wicinski, Mojgan Devouassoux-Shisheboran, Valérie Combaret, Pascal Finetti, Christelle Chassot, Christiane Pinatel, Frédérique Fauvet, Pierre Saintigny, Emilie Thomas, Caroline Moyret-Lalle, Joël Lachuer, Emmanuelle Despras, Jean-Luc Jauffret, François Bertucci, Jérôme Guitton, Anne Wierinckx, Qing Wang, Nina Radosevic-Robin, Frédérique Penault-Llorca, David G Cox, Frédéric Hollande, Stéphane Ansieau, Julie Caramel, Daniel Birnbaum, Arnaud M Vigneron, Agnès Tissier, Emmanuelle Charafe-Jauffret, Alain Puisieux
Chromosomal instability (CIN), a feature of most adult neoplasms from their early stages onward, is a driver of tumorigenesis. However, several malignancy subtypes, including some triple-negative breast cancers, display a paucity of genomic aberrations, thus suggesting that tumor development may occur in the absence of CIN. Here we show that the differentiation status of normal human mammary epithelial cells dictates cell behavior after an oncogenic event and predetermines the genetic routes toward malignancy...
April 10, 2017: Nature Medicine
https://www.readbyqxmd.com/read/28390726/effects-of-preweaning-nutrient-intake-in-the-developing-mammary-parenchymal-tissue
#6
F Soberon, M E Van Amburgh
Historically, mammary gland growth has been considered isometric the first 2 mo of life and then allometric until peripuberty. However, recent work indicated that the mammary gland might be responsive to nutrient intake preweaning. The objectives of this study were to describe the effects of nutrient intake preweaning on mammary gland development and to investigate cell specific proliferation during this phase of development. Twelve dairy heifer calves were fed either a fixed amount of milk replacer (MR; control, n = 6) or an amount of MR adjusted for BW (enhanced, n = 6)...
April 5, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28380641/-development-of-an-innovative-cell-isolation-method-for-the-investigation-of-breast-cancer-pathogenesis-and-angiogenesis-for-experimental-in-vitro-and-in-vivo-assays
#7
Annika Weigand, Kereshmeh Tasbihi, Pamela L Strissel, Reiner Strick, Raymund E Horch, Anja M Boos
Breast cancer is the world's most common cancer among women. Autologous lipotransfer is increasingly used for breast reconstruction following surgical removal of the tumour. In cell-assisted lipotransfer, the transplant is enriched with stem cells from adipose tissue (ADSC). Despite positive clinical results, there are some concerns regarding oncological safety due to transplanted stem cells. To date there are only a few breast cancer studies using primary cells from the same patient to enable further investigation into the complexity of cell-cell interactions in breast cancer in an experimental setting...
April 5, 2017: Handchirurgie, Mikrochirurgie, Plastische Chirurgie
https://www.readbyqxmd.com/read/28380418/expression-of-emt-markers-and-mode-of-surgery-are-prognostic-in-phyllodes-tumors-of-the-breast
#8
Xiaolong Feng, Lin Zhao, Honghong Shen, Xiaozhen Liu, Yang Yang, Shuhua Lv, Yun Niu
Phyllodes tumors of the breast are rare neoplasms that account for <1% of all mammary tumors and 2-3% of fibro-epithelial neoplasms of the breast. We evaluated the clinicopathological characteristics of a cohort of 246 Chinese patients in relation to the expression of epithelial-to-mesenchymal (EMT) markers in benign, borderline and malignant tumors and the prognostic value of different surgical regimens. We observed that survival outcomes correlated with the mode of surgical management in the three patient groups...
March 23, 2017: Oncotarget
https://www.readbyqxmd.com/read/28359147/functional-enhancers-as-master-regulators-of-tissue-specific-gene-regulation-and-cancer-development
#9
REVIEW
Je Yeong Ko, Sumin Oh, Kyung Hyun Yoo
Tissue-specific transcription is critical for normal development, and abnormalities causing undesirable gene expression may lead to diseases such as cancer. Such highly organized transcription is controlled by enhancers with specific DNA sequences recognized by transcription factors. Enhancers are associated with chromatin modifications that are distinct epigenetic features in a tissue-specific manner. Recently, super-enhancers comprising enhancer clusters co-occupied by lineage-specific factors have been identified in diverse cell types such as adipocytes, hair follicle stem cells, and mammary epithelial cells...
March 2017: Molecules and Cells
https://www.readbyqxmd.com/read/28356569/synergistic-targeting-of-breast-cancer-stem-like-cells-by-human-%C3%AE-%C3%AE-t-cells-and-cd8-t-cells
#10
Hung-Chang Chen, Noémie Joalland, John S Bridgeman, Fouad S Alchami, Ulrich Jarry, Mohd Wajid A Khan, Luke Piggott, Yasmin Shanneik, Jianqiang Li, Marco J Herold, Thomas Herrmann, David A Price, Awen M Gallimore, Richard W Clarkson, Emmanuel Scotet, Bernhard Moser, Matthias Eberl
The inherent resistance of cancer stem cells (CSCs) to existing therapies has largely hampered the development of effective treatments for advanced malignancy. To help develop novel immunotherapy approaches that efficiently target CSCs, an experimental model allowing reliable distinction of CSCs and non-CSCs was set up to study their interaction with non-MHC restricted γδ T cells and antigen-specific CD8(+) T cells. Stable lines with characteristics of breast CSC-like cells were generated from ras-transformed human mammary epithelial (HMLER) cells as confirmed by their CD44(hi) CD24(lo) GD2(+) phenotype, their mesenchymal morphology in culture and their capacity to form mammospheres under non-adherent conditions, as well as their potent tumorigenicity, self-renewal and differentiation in xenografted mice...
March 30, 2017: Immunology and Cell Biology
https://www.readbyqxmd.com/read/28341962/tumour-suppressor-ep300-a-modulator-of-paclitaxel-resistance-and-stemness-is-downregulated-in-metaplastic-breast-cancer
#11
Muhammad Asaduzzaman, Stephanie Constantinou, Haoxiang Min, John Gallon, Meng-Lay Lin, Poonam Singh, Selina Raguz, Simak Ali, Sami Shousha, R Charles Coombes, Eric W-F Lam, Yunhui Hu, Ernesto Yagüe
PURPOSE: We have previously described a novel pathway controlling drug resistance, epithelial-to-mesenchymal transition (EMT) and stemness in breast cancer cells. Upstream in the pathway, three miRs (miR-106b, miR-93 and miR-25) target EP300, a transcriptional activator of E-cadherin. Upregulation of these miRs leads to the downregulation of EP300 and E-cadherin with initiation of an EMT. However, miRs regulate the expression of many genes, and the contribution to EMT by miR targets other than EP300 cannot be ruled out...
March 24, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28333145/the-cryo-thermal-therapy-eradicated-melanoma-in-mice-by-eliciting-cd4-t-cell-mediated-antitumor-memory-immune-response
#12
Kun He, Ping Liu, Lisa X Xu
Tumor metastasis is a major concern in tumor therapy. In our previous studies, a novel tumor therapeutic modality of the cryo-thermal therapy has been presented, highlighting its effect on the suppression of distal metastasis and leading to long-term survival in 4T1 murine mammary carcinoma model. To demonstrate the therapeutic efficacy in other aggressive tumor models and further investigate the mechanism of long-term survival induced, in this study, spontaneous metastatic murine B16F10 melanoma model was used...
March 23, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28329676/lineage-biased-stem-cells-maintain-estrogen-receptor-positive-and-negative-mouse-mammary-luminal-lineages
#13
Chunhui Wang, John R Christin, Maja H Oktay, Wenjun Guo
Delineating the mammary differentiation hierarchy is important for the study of mammary gland development and tumorigenesis. Mammary luminal cells are considered a major origin of human breast cancers. However, how estrogen-receptor-positive (ER(+)) and ER(-) luminal cells are developed and maintained remains poorly understood. The prevailing model suggests that a common stem/progenitor cell generates both cell types. Through genetic lineage tracing in mice, we find that SOX9-expressing cells specifically contribute to the development and maintenance of ER(-) luminal cells and, to a lesser degree, basal cells...
March 21, 2017: Cell Reports
https://www.readbyqxmd.com/read/28299668/runx-genes-in-breast-cancer-and-the-mammary-lineage
#14
Nicholas Rooney, Alessandra I Riggio, Daniel Mendoza-Villanueva, Paul Shore, Ewan R Cameron, Karen Blyth
A full understanding of RUNX gene function in different epithelial lineages has been thwarted by the lethal phenotypes observed when constitutively knocking out these mammalian genes. However temporal expression of the Runx genes throughout the different phases of mammary gland development is indicative of a functional role in this tissue. A few studies have emerged describing how these genes impact on the fate of mammary epithelial cells by regulating lineage differentiation and stem/progenitor cell potential, with implications for the transformed state...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28298340/pre-clinical-validation-of-a-selective-anti-cancer-stem-cell-therapy-for-numb-deficient-human-breast-cancers
#15
Daniela Tosoni, Sarah Pambianco, Blanche Ekalle Soppo, Silvia Zecchini, Giovanni Bertalot, Giancarlo Pruneri, Giuseppe Viale, Pier Paolo Di Fiore, Salvatore Pece
The cell fate determinant Numb is frequently downregulated in human breast cancers (BCs), resulting in p53 inactivation and an aggressive disease course. In the mouse mammary gland, Numb/p53 downregulation leads to aberrant tissue morphogenesis, expansion of the stem cell compartment, and emergence of cancer stem cells (CSCs). Strikingly, CSC phenotypes in a Numb-knockout mouse model can be reverted by Numb/p53 restoration. Thus, targeting Numb/p53 dysfunction in Numb-deficient human BCs could represent a novel anti-CSC therapy...
March 15, 2017: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/28297567/developing-a-novel-two-dimensional-culture-system-to-enrich-human-prostate-luminal-progenitors-that-can-function-as-a-cell-of-origin-for-prostate-cancer
#16
Dingxiao Zhang, Kevin Lin, Yue Lu, Kiera Rycaj, Yi Zhong, Hsueh-Ping Chao, Tammy Calhoun-Davis, Jianjun Shen, Dean G Tang
Elucidating the cell of origin of cancer has great significance in stratifying patients into appropriate treatment groups and for developing novel targeted therapies. Early studies demonstrate that only stem-like basal cells in the normal human prostate (NHP) can function as the cell of origin for prostate cancer (PCa). Here, we show that the organoids derived from bulk NHP luminal cells can also be tumorigenically transformed. We further show that the WIT medium, which is used to culture human mammary epithelial progenitor cells, when combined with the ROCK inhibitor, can readily propagate a population of progenitor-like cells from the primary NHP luminal cell isolates...
March 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28278054/p16-loss-rescues-functional-decline-of-brca1-deficient-mammary-stem-cells
#17
Alexandria Scott, Feng Bai, Ho Lam Chan, Shiqin Liu, Joyce M Slingerland, David J Robbins, Anthony J Capobianco, Xin-Hai Pei
Recent evidence indicates that the accumulation of endogenous DNA damage can induce senescence and limit the function of adult stem cells. It remains elusive whether deficiency in DNA damage repair is associated with the functional alteration of mammary stem cells. In this article, we reported that senescence was induced in mammary epithelial cells during aging along with increased expression of p16Ink4a (p16), an inhibitor of CDK4 and CKD6. Loss of p16 abrogated the age-induced senescence in mammary epithelial cells and significantly increased mammary stem cell function...
April 18, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28270600/diverse-regulation-of-mammary-epithelial-growth-and-branching-morphogenesis-through-noncanonical-wnt-signaling
#18
Kai Kessenbrock, Prestina Smith, Sander Christiaan Steenbeek, Nicholas Pervolarakis, Raj Kumar, Yasuhiro Minami, Andrei Goga, Lindsay Hinck, Zena Werb
The mammary gland consists of an adipose tissue that, in a process called branching morphogenesis, is invaded by a ductal epithelial network comprising basal and luminal epithelial cells. Stem and progenitor cells drive mammary growth, and their proliferation is regulated by multiple extracellular cues. One of the key regulatory pathways for these cells is the β-catenin-dependent, canonical wingless-type MMTV integration site family (WNT) signaling pathway; however, the role of noncanonical WNT signaling within the mammary stem/progenitor system remains elusive...
March 21, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28245919/un-masc-ing-stem-cell-dynamics-in-mammary-branching-morphogenesis
#19
Erin Greenwood, Emma D Wrenn, Kevin J Cheung
The properties of stem cells that participate in mammary gland branching morphogenesis remain contested. Reporting in Nature, Scheele et al. (2017) establish a model for post-pubertal mammary branching morphogenesis in which position-dependent, lineage-restricted stem cells undergo cell mixing in order to contribute to long-term growth.
February 27, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28245431/lesion-complexity-drives-age-related-cancer-susceptibility-in-human-mammary-epithelial-cells
#20
Deepa M Sridharan, Shiena Enerio, Mark A LaBarge, Martha M Stampfer, Janice M Pluth
Exposures to various DNA damaging agents can deregulate a wide array of critical mechanisms that maintain genome integrity. It is unclear how these processes are impacted by one's age at the time of exposure and the complexity of the DNA lesion. To clarify this, we employed radiation as a tool to generate simple and complex lesions in normal primary human mammary epithelial cells derived from women of various ages. We hypothesized that genomic instability in the progeny of older cells exposed to complex damages will be exacerbated by age-associated deterioration in function and accentuate age-related cancer predisposition...
February 28, 2017: Aging
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