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proliferation of mammary gland

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https://www.readbyqxmd.com/read/28332185/mechanism-of-prolactin-inhibition-of-mir-135b-via-methylation-in-goat-mammary-epithelial-cells
#1
Zhi Chen, Jun Luo, ChangHui Zhang, Yue Ma, Shuang Sun, Tianyin Zhang, Juan J Loor
Prolactin is an important endocrine activator of lactogenesis. This study investigated the function and mechanism of miR-135b in the enhancement of lactation by prolactin in goat mammary epithelial tissue. We utilized S-Poly (T) sequencing to evaluate changes in gene regulation in the goat mammary gland after incubation with 2.5 ug/ml prolactin and 2.5 ug/ml IGF-1 by examining highly expressed miRNAs during early-lactation and late-lactation. The results illustrated that miR-135b is highly expressed in the goat mammary gland during early-lactation and late-lactation, and also after treatment with 2...
March 23, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28314237/non-autonomous-cell-proliferation-in-the-mammary-gland-and-cancer
#2
REVIEW
Robert J Weber, Tejal A Desai, Zev J Gartner
Cells decide whether to grow and divide by integrating internal and external signals. Non-autonomous cell growth and proliferation occurs when microenvironmental signals from neighboring cells, both physical and secreted, license this decision. Understanding these processes is vital to developing an accurate framework for cell-cell interactions and cellular decision-making, and is useful for advancing new therapeutic strategies to prevent dysregulated growth. Here, we review some recent examples of non-autonomous cell growth in the mammary gland and tumor cell proliferation...
March 14, 2017: Current Opinion in Cell Biology
https://www.readbyqxmd.com/read/28301550/mammary-epithelial-cell-phenotype-disruption-in-vitro-and-in-vivo-through-eralpha36-overexpression
#3
Charlène Thiebaut, Clémence Chamard-Jovenin, Amand Chesnel, Chloé Morel, El-Hadi Djermoune, Taha Boukhobza, Hélène Dumond
Estrogen receptor alpha 36 (ERα36) is a variant of the canonical estrogen receptor alpha (ERα66), widely expressed in hormone sensitive cancer cells and whose high expression level correlates with a poor survival prognosis for breast cancer patients. While ERα36 activity have been related to breast cancer progression or acquired resistance to treatment, expression level and location of ERα36 are poorly documented in the normal mammary gland. Therefore, we explored the consequences of a ERα36 overexpression in vitro in MCF-10A normal mammary epithelial cells and in vivo in a unique model of MMTV-ERα36 transgenic mouse strain wherein ERα36 mRNA was specifically expressed in the mammary gland...
2017: PloS One
https://www.readbyqxmd.com/read/28291785/transcriptome-difference-and-potential-crosstalk-between-liver-and-mammary-tissue-in-mid-lactation-primiparous-dairy-cows
#4
Dengpan Bu, Massimo Bionaz, Mengzhi Wang, Xuemei Nan, Lu Ma, Jiaqi Wang
Liver and mammary gland are among the most important organs during lactation in dairy cows. With the purpose of understanding both the different and the complementary roles and the crosstalk of those two organs during lactation, a transcriptome analysis was performed on liver and mammary tissues of 10 primiparous dairy cows in mid-lactation. The analysis was performed using a 4×44K Bovine Agilent microarray chip. The transcriptome difference between the two tissues was analyzed using SAS JMP Genomics using ANOVA with a false discovery rate correction (FDR)...
2017: PloS One
https://www.readbyqxmd.com/read/28287053/proliferation-apoptosis-balance-in-staphylococcus-aureus-chronically-infected-bovine-mammary-glands-during-involution
#5
Carolina S Andreotti, Elizabet A L Pereyra, Sofía C Sacco, Celina Baravalle, María S Renna, Hugo H Ortega, Luis F Calvinho, Bibiana E Dallard
The objective of this study was to determine whether Staphylococcus aureus chronic intramammary infection (IMI) influences expression of proteins related to regulation of proliferation and apoptosis processes and proliferation/apoptosis index during active involution in bovine mammary gland. Twenty-one Holstein non-pregnant cows in late lactation either uninfected or with chronic naturally acquired S. aureus IMI were included in this study. Cows were slaughtered at 7, 14 and 21 d after cessation of milking and samples for immunohistochemical analysis were taken...
March 13, 2017: Journal of Dairy Research
https://www.readbyqxmd.com/read/28278176/cuzd1-is-a-critical-mediator-of-the-jak-stat5-signaling-pathway-that-controls-mammary-gland-development-during-pregnancy
#6
Janelle Mapes, Quanxi Li, Athilakshmi Kannan, Lavanya Anandan, Mary Laws, John P Lydon, Indrani C Bagchi, Milan K Bagchi
In the mammary gland, genetic circuits controlled by estrogen, progesterone, and prolactin, act in concert with pathways regulated by members of the epidermal growth factor family to orchestrate growth and morphogenesis during puberty, pregnancy and lactation. However, the precise mechanisms underlying the crosstalk between the hormonal and growth factor pathways remain poorly understood. We have identified the CUB and zona pellucida-like domain-containing protein 1 (CUZD1), expressed in mammary ductal and alveolar epithelium, as a novel mediator of mammary gland proliferation and differentiation during pregnancy and lactation...
March 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28275010/epithelial-and-non-epithelial-patched-1-ptch1-play-opposing-roles-to-regulate-proliferation-and-morphogenesis-of-the-mouse-mammary-gland
#7
Teresa Monkkonen, John D Landua, Adriana P Visbal, Michael T Lewis
Patched-1 (Ptch1) has epithelial, stromal, and systemic roles in murine mammary gland organogenesis, yet specific functions remain undefined. Cre-recombinase-mediated Ptch1 ablation in mammary epithelium increased proliferation and branching, but did not phenocopy transgenic expression of activated Smoothened (SmoM2). Epithelium showed no evidence of canonical hedgehog signaling, and hyperproliferation was not blocked by SMO inhibition, suggesting a non-canonical function of PTCH1. Consistent with this possibility, nuclear localization of Cyclin B1 was increased...
March 8, 2017: Development
https://www.readbyqxmd.com/read/28270600/diverse-regulation-of-mammary-epithelial-growth-and-branching-morphogenesis-through-noncanonical-wnt-signaling
#8
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 7, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28269652/development-of-a-three-dimensional-lattice-free-multiscale-model-of-the-mammary-terminal-end-bud
#9
Joseph D Butner, Vittorio Cristini, Zhihui Wang
The terminal end bud (TEB) is a bulbous structure composed of highly proliferative cells that is responsible for mammary gland development during the pubertal stage. This is a highly organized process, involving cellular differentiation hierarchies regulated by endocrine and paracrine signaling. Here, we present development of a lattice-free, three dimensional multiscale agent based model of the TEB to study the effects of cellular phenotypic hierarchies, endocrine and paracrine signaling, and proliferation demographics on pubertal mammary gland development...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28259983/therapeutic-effects-of-schisandra-chinensis-on-the-hyperprolactinemia-in-rat
#10
So-Hye Hong, Mei Li, Eui-Bae Jeung, Geun-Shik Lee, Eui-Ju Hong, Young-Whan Choi, Beum-Soo An
Prolactin (PRL) is secreted from the pituitary gland in response to eating, mating, and ovulation. Increased serum concentration of PRL during pregnancy contributes to enlargement of the mammary glands of the breasts and prepares for production of milk. However, high PRL levels derived from prolactinoma and hyperprolactinemia induce physiological disorders such as infertility and early menopause. Natural compounds isolated from S. chinensis have been known to possess anti-oxidative, anti-inflammatory and anti-diabetic effects...
February 17, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28258171/znf503-zpo2-drives-aggressive-breast-cancer-progression-by-down-regulation-of-gata3-expression
#11
Payam Shahi, Chih-Yang Wang, Devon A Lawson, Euan M Slorach, Angela Lu, Ying Yu, Ming-Derg Lai, Hugo Gonzalez Velozo, Zena Werb
The transcription factor GATA3 is the master regulator that drives mammary luminal epithelial cell differentiation and maintains mammary gland homeostasis. Loss of GATA3 is associated with aggressive breast cancer development. We have identified ZNF503/ZEPPO2 zinc-finger elbow-related proline domain protein 2 (ZPO2) as a transcriptional repressor of GATA3 expression and transcriptional activity that induces mammary epithelial cell proliferation and breast cancer development. We show that ZPO2 is recruited to GATA3 promoter in association with ZBTB32 (Repressor of GATA, ROG) and that ZBTB32 is essential for down-regulation of GATA3 via ZPO2...
March 3, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28252173/inhibition-of-mir-660-5p-expression-suppresses-tumor-development-and-metastasis-in-human-breast-cancer
#12
Y Shen, Y F Ye, L W Ruan, L Bao, M W Wu, Y Zhou
Breast cancer, which derives from the epithelium of the mammary glands, is one of the most common cancers diagnosed in women globally. To date, the authors of many studies have reported that the deregulation of microRNAs (miRNAs) plays a crucial role in the occurrence, development, and metastasis of tumors. Here, we discovered that miR-660-5p was upregulated in the breast cancer cell lines MCF7 and MDA-MB-231 compared with that in the normal control cell line CCD-1095Sk. We then inhibited the expression of miR-660-5p to investigate its biological function in cancer development, progression, and metastasis...
February 23, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28244015/bisphenol-a-induces-sox2-in-er-breast-cancer-stem-like-cells
#13
M Angeles Lillo, Cydney Nichols, Tiffany N Seagroves, Gustavo A Miranda-Carboni, Susan A Krum
Bisphenol A (BPA) is an endocrine disrupting compound used in food and beverage plastic containers and has been shown to increase breast cancer cellular proliferation. However, the concentrations of BPA used in these experiments are far higher than the physiological levels of BPA detected in the human body. We observed in vitro that exposure of MCF-7 cells to physiological concentrations of BPA failed to increase cell proliferation or to induce canonical estrogen-responsive genes (pS2 and progesterone receptor (PR)), in contrast to 17β-estradiol (E2) treatment...
February 27, 2017: Hormones & Cancer
https://www.readbyqxmd.com/read/28238410/histological-and-immunohistochemical-characterization-of-the-mongolian-gerbil-s-mammary-gland-during-gestation-lactation-and-involution
#14
Ellen C R Leonel, Luiz R Falleiros, Silvana G P Campos, Sebastião R Taboga
The morphological description of normal tissues is fundamental for making comparisons and in order to identify injuries and lesions. The aim of this work was to describe the morphological characteristics of the female Mongolian gerbil's (Meriones unguiculatus) normal mammary gland, the average expression of hormone receptors, and the average proliferation rates in the epithelial cells during the periods of lactation, pregnancy and involution. Dams were euthanized on the 14th and 21st gestational days, 7 and 14days after parturition, and 3 and 5days after weaning...
February 23, 2017: Acta Histochemica
https://www.readbyqxmd.com/read/28227910/development-of-a-three-dimensional-lattice-free-multiscale-model-of-the-mammary-terminal-end-bud
#15
Joseph D Butner, Vittorio Cristini, Zhihui Wang, Joseph D Butner, Vittorio Cristini, Zhihui Wang, Vittorio Cristini, Joseph D Butner, Zhihui Wang
The terminal end bud (TEB) is a bulbous structure composed of highly proliferative cells that is responsible for mammary gland development during the pubertal stage. This is a highly organized process, involving cellular differentiation hierarchies regulated by endocrine and paracrine signaling. Here, we present development of a lattice-free, three dimensional multiscale agent based model of the TEB to study the effects of cellular phenotypic hierarchies, endocrine and paracrine signaling, and proliferation demographics on pubertal mammary gland development...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28214212/primary-multiple-tumor-with-affection-of-the-thyroid-gland-uterus-urinary-bladder-mammary-gland-and-other-organs
#16
А Romaniuk, M Lyndin, V Smiyanov, Vl Sikora, A Rieznik, Y Kuzenko, H Budko, Yu Moskalenko, L Karpenko, Vol Sikora, O Gladchenko
BACKGROUND: Nowadays multiple primary tumor is characterized by growth and development of two or more tumors in one patient. The total world sickness rate ranges from 1% to 37%. The presence of four or more tumors in one patient is rare case and presented as casuistry. CASE PRESENTATION: We showed a case of multiple primary tumor with metahronic lesion of the thyroid, uterus and breast, followed by synchronous benign tumors of the subcutaneous fat, urinary bladder and gallbladder were considered...
January 19, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28212313/chemoprevention-of-rat-mammary-carcinogenesis-by-apiaceae-spices
#17
Farrukh Aqil, Jeyaprakash Jeyabalan, Radha Munagala, Srivani Ravoori, Manicka V Vadhanam, David J Schultz, Ramesh C Gupta
Scientific evidence suggests that many herbs and spices have medicinal properties that alleviate symptoms or prevent disease. In this study, we examined the chemopreventive effects of the Apiaceae spices, anise, caraway, and celery seeds against 17β-estrogen (E2)-mediated mammary tumorigenesis in an ACI (August-Copenhagen Irish) rat model. Female ACI rats were given either control diet (AIN 93M) or diet supplemented with 7.5% (w/w) of anise, caraway, or celery seed powder. Two weeks later, one half of the animals in each group received subcutaneous silastic implants of E2...
February 16, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28202042/hoxc8-regulates-self-renewal-differentiation-and-transformation-of-breast-cancer-stem-cells
#18
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/28187162/loss-of-caveolin-1-alters-extracellular-matrix-protein-expression-and-ductal-architecture-in-murine-mammary-glands
#19
Christopher Thompson, Sahar Rahim, Jeremiah Arnold, Abigail Hielscher
The extracellular matrix (ECM) is abnormal in breast tumors and has been reported to contribute to breast tumor progression. One factor, which may drive ongoing matrix synthesis in breast tumors, is the loss of stromal caveolin-1 (cav-1), a scaffolding protein of caveolae, which has been linked to breast tumor aggressiveness. To determine whether loss of cav-1 results in the abnormal expression of matrix proteins, mammary glands from cav- 1-/- and cav- 1 +/+ mice were investigated for differences in expression of several ECM proteins...
2017: PloS One
https://www.readbyqxmd.com/read/28168650/gsdma3-is-required-for-mammary-gland-development-in-mice
#20
Haiying Guo, Senlin Xu, Yingxin Liu, Yang Yang, Fang Deng, Yizhan Xing, Xiaohua Lian, Yuhong Li
AE (alopecia and excoriation) is a mouse mutant phenotype that harbours a mutation in Gsdma3. Gsdma3 has been reported to regulate the development of skin and hair follicles. However, its role in the mammary glands has not been reported. In this study, we found that descendants bred from an AE mother died within 12 days after birth. Then, we found that the expression of Gsdma3 varied among the developmental stages of mammary glands. Subsequently, we systematically studied the phenotype of the mammary glands of AE and wild-type mice, revealing that the mammary glands were smaller in AE mice...
February 6, 2017: Histochemistry and Cell Biology
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