Abstract:
:Carcinogenesis is a complex process during which cells undergo genetic and epigenetic alterations. These changes can lead tumor cells to acquire characteristics that enable movement from the primary site of origin when conditions become unfavorable. Such characteristics include gain of front-rear polarity, increased migration/invasion, and resistance to anoikis, which facilitate tumor survival during metastasis. An epithelial to mesenchymal transition (EMT) constitutes one way that cancer cells can gain traits that promote tumor progression and metastasis. Two microRNA (miRNA) families, the miR-200 and miR-221 families, play crucial opposing roles that affect the differentiation state of breast cancers. These two families are differentially expressed between the luminal A subtype of breast cancer as compared to the less well-differentiated triple negative breast cancers (TNBCs) that exhibit markers indicative of an EMT. The miR-200 family promotes a well-differentiated epithelial phenotype, while high miR-221/222 results in a poorly differentiated, mesenchymal-like phenotype. This review focuses on the mechanisms (specific proven targets) by which these two miRNA families exert opposing effects on cellular plasticity during breast tumorigenesis and metastasis.
journal_name
J Mammary Gland Biol Neoplasiajournal_title
Journal of mammary gland biology and neoplasiaauthors
Howe EN,Cochrane DR,Richer JKdoi
10.1007/s10911-012-9244-6subject
Has Abstractpub_date
2012-03-01 00:00:00pages
65-77issue
1eissn
1083-3021issn
1573-7039journal_volume
17pub_type
杂志文章,评审abstract::It has long been appreciated that the estrogen receptor (ER) plays an important role in the biology of breast cancer. It is an accepted factor predicting favorable disease outcome and treatment response, and as such is generally considered to represent a "good" prognostic marker in breast cancer. In this review we pre...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章,评审
doi:10.1023/a:1014782813943
更新日期:2001-10-01 00:00:00
abstract::The relationship between maternal dietary intakes of energy or fat maternal body composition and the milk fat concentration is an important element in understanding the role of breast-milk in infant nutrition. In most studies in both developing and developed countries, no relation between maternal energy intake and mi...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章
doi:10.1023/a:1018702030259
更新日期:1999-07-01 00:00:00
abstract::Mastitis is an inflammation of the mammary gland commonly caused by bacterial infection. The inflammatory process is a normal and necessary immunological response to invading pathogens. The purpose of host inflammatory responses is to eliminate the source of tissue injury, restore immune homeostasis, and return tissue...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章,评审
doi:10.1007/s10911-011-9230-4
更新日期:2011-12-01 00:00:00
abstract::Premalignant breast disease in humans is a concept that admits to a broad range of elements and possible determinants predicting the likelihood of developing breast cancer. Most of these elements are relative, such as the risk of breast cancer for women that is 130 times that of men and peaks at a younger age by about...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章,评审
doi:10.1023/a:1009521726605
更新日期:2000-10-01 00:00:00
abstract::Localised breast cancer can be cured by surgery and adjuvant treatments, but mortality remains high as some tumours metastasize early. Perlecan is a basement membrane (BM) protein involved in tumour development and progression. Here, mRNA and protein expression of perlecan, and mRNA expression of matrix degrading enzy...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章
doi:10.1007/s10911-020-09447-2
更新日期:2020-03-01 00:00:00
abstract::Increased glucose requirements of the gravid uterus during late pregnancy and even greater requirements of the lactating mammary glands necessitate major adjustments in glucose production and utilization in maternal liver, adipose tissue, skeletal muscle, and other tissues. In ruminants, which at all times rely princi...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章,评审
doi:10.1023/a:1026336505343
更新日期:1997-07-01 00:00:00
abstract::Estrogens are important for the development of the mammary gland and strongly associated with oncogenesis in this tissue. The biological effects of estrogens are mediated through the estrogen receptor (ER), a member of the nuclear receptor superfamily. The estrogen/ER signaling pathway plays a central role in mammary ...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章,评审
doi:10.1023/a:1026339111278
更新日期:1997-10-01 00:00:00
abstract::Breast cancer is one of the most common cancers of women in the Western world. Despite modest achievements in the treatment of this disease, there is a substantial unmet medical need to reduce the occurrence of new breast cancers. In several prospective, placebo-controlled trials, the antiestrogen tamoxifen has been s...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章,评审
doi:10.1023/a:1025727103811
更新日期:2003-01-01 00:00:00
abstract::Women are using estrogens for many purposes, such as to prevent pregnancy or miscarriage, or to treat menopausal symptoms. Estrogens also have been used to treat breast cancer which seems puzzling, since there is convincing evidence to support a link between high lifetime estrogen exposure and increased breast cancer ...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章,评审
doi:10.1007/s10911-013-9274-8
更新日期:2013-03-01 00:00:00
abstract::The mouse has emerged as a primary animal model for human breast cancer because the mammary glands of the two species are very similar in structure and function. In this regard the TDLU and LA have similar morphology. The mouse, infected by MMTV, develops "spontaneous" tumors with specific but limited tumor phenotypes...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章,评审
doi:10.1023/a:1018712905244
更新日期:1999-01-01 00:00:00
abstract::Since breast cancer and its associated metastasis are a global health problem and a major cause of mortality among women, research efforts to understand the development, morphogenesis, and functioning of the mammary gland are a high priority. Myriad signaling pathways, transcription factors, and associated transcripti...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章,评审
doi:10.1007/s10911-007-9043-7
更新日期:2007-09-01 00:00:00
abstract::The mammary gland is an ectodermal appendage and a defining feature of mammals. Consistent with it being a recent evolutionary novelty, many of the molecules essential for the ontogeny and morphogenesis of various vertebrate organs, including those in the fibroblast growth factor (FGF) signaling pathway, are co-opted ...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章,评审
doi:10.1007/s10911-013-9278-4
更新日期:2013-06-01 00:00:00
abstract::Estrogen receptor-α (ERα) and transforming growth factor (TGF)-β signaling pathways are major regulators during mammary gland development, function and tumorigenesis. Predominantly, they have opposing roles in proliferation and apoptosis. While ERα signaling supports growth and differentiation and is antiapoptotic, ma...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章,评审
doi:10.1007/s10911-011-9203-7
更新日期:2011-06-01 00:00:00
abstract::Available evidence indicates that mammary gland secretions first evolved in synapsids that laid parchment-shelled eggs. Unlike the rigid-shelled eggs of birds and some other sauropsids, parchment-shelled eggs lose water very rapidly when exposed to ambient air of lower vapor pressure, whether due to differences in rel...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章,评审
doi:10.1023/a:1022848632125
更新日期:2002-07-01 00:00:00
abstract::The mouse model for breast cancer has developed into a most effective means of dissecting and understanding this devastating disease. The inbred transgenic mouse lends itself to biological, molecular, immunological, and genetic studies. The observation, dissection, transplantation, and subsequent amplification of prec...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章,评审
doi:10.1007/s10911-008-9088-2
更新日期:2008-09-01 00:00:00
abstract::Various retroviral and lentiviral vectors have been used for up-the-teat intraductal injection to deliver markers, oncogenes, and other genes into mammary epithelial cells in mice. These methods along with the large number of genetically engineered mouse lines have greatly helped us learn normal breast development and...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章
doi:10.1007/s10911-020-09469-w
更新日期:2020-11-09 00:00:00
abstract::During normal mammary gland development, the tyrosine kinase Jak2 and its main substrate, the signal transducer and activator of transcription-5 (Stat5), are critical for the growth and differentiation of alveolar progenitors as well as the survival of secretory mammary epithelial cells. Genetic studies in mouse model...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章,评审
doi:10.1007/s10911-008-9062-z
更新日期:2008-03-01 00:00:00
abstract::Mammary gland involution, characterized by extensive apoptosis and structural remodelling of the gland, is the process by which the gland is returned to the pre-pregnant state. A key advantage of the mammary gland is the ability to synchronize involution through forced weaning, thus allowing the dissection of biochemi...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章,评审
doi:10.1007/s10911-007-9034-8
更新日期:2007-03-01 00:00:00
abstract::Since the discovery that neural tissue contains a population of stem cells that form neurospheres in vitro, sphere-forming assays have been adapted for use with a number of different tissue types for the quantification of stem cell activity and self-renewal. One tissue type widely used for stem cell investigations is ...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章,评审
doi:10.1007/s10911-012-9255-3
更新日期:2012-06-01 00:00:00
abstract::The neuroendocrine hormone prolactin (PRL) stimulates breast growth and differentiation during puberty, pregnancy, and lactation. Despite extensive and convincing data indicating that PRL significantly contributes to the pathogenesis and progression of rodent mammary carcinoma, parallel observations for human breast c...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章,评审
doi:10.1023/a:1026325630359
更新日期:1997-01-01 00:00:00
abstract::Transgenic experiments using oocyte micro-injection methodology are often performed in order to target expression of a foreign gene in a specific tissue or, to a lesser extent, to study the regulation of gene expression. However, the isolation of embryonic stem cells in mice and the development of antisense and ribozy...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章,评审
doi:10.1023/a:1018775729834
更新日期:1998-07-01 00:00:00
abstract::Dynamic interactions between the hormone responsive mammary gland epithelium and surrounding stromal macrophage populations are critical for normal development and function of the mammary gland. Macrophages are versatile cells capable of diverse roles in mammary gland development and maintenance of homeostasis, and th...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章,评审
doi:10.1007/s10911-014-9319-7
更新日期:2014-07-01 00:00:00
abstract::Colony stimulating factor 1 (CSF-1), a major regulator of the mononuclear phagocytic lineage, is expressed in more than 70% of human breast cancers and its expression is correlated with poor prognosis. Studies of CSF-1 null mutant mice demonstrated that CSF-1 plays an important role in normal mammary ductal developmen...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章,评审
doi:10.1023/a:1020399802795
更新日期:2002-04-01 00:00:00
abstract::The differentiation and function of mammary epithelial cells is dependent upon the combined action of growth factor/hormone receptors and integrin receptors, which act in concert to control the signals required for normal cell function. It is now becoming clear that integrin receptors also contribute to carcinoma cell...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章,评审
doi:10.1023/a:1018766317055
更新日期:1999-10-01 00:00:00
abstract::Breast development occurs through well-defined stages representing 'windows of susceptibility' to adverse environmental exposures that potentially modify breast cancer risk. Systematic characterization of morphology and transcriptome during normal breast development lays the foundation of our understanding of cancer e...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章
doi:10.1007/s10911-018-9401-7
更新日期:2018-09-01 00:00:00
abstract::Mouse modeling of human breast cancer has developed tremendously over the past ten years. Human breast cancer is characterized by enormous biological diversity and, collectively, the new models have come much closer to encompassing this diversity. They have provided a deeper understanding of the fundamental events tha...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章,评审
doi:10.1007/s10911-008-9093-5
更新日期:2008-09-01 00:00:00
abstract::Much of our knowledge about the intricate pathways and molecular mechanisms involved in the conversion of a normal mammary epithelial cell to malignancy derives from studies on mammary tumorigenesis induced by the retrovirus mouse mammary tumor virus. In addition, three DNA tumor viruses, simian virus 40, polyomavirus...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章,评审
doi:10.1007/BF02096302
更新日期:1996-01-01 00:00:00
abstract::Epithelial to mesenchymal transition (EMT) and its reversion via mesenchymal to epithelial transition (MET), represent a stepwise cycle of epithelial plasticity that allows for normal tissue remodelling and diversification during development. In particular, epithelial-mesenchymal plasticity is central to many aspects ...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章,评审
doi:10.1007/s10911-010-9180-2
更新日期:2010-06-01 00:00:00
abstract::The Notch receptor protein and its signaling pathway have been well conserved throughout evolution and appear to be pivotal components in cell fate decisions during development. Recent studies suggest that, depending on the cellular and developmental context, Notch signaling may also affect cell proliferation and prog...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章,评审
doi:10.1023/a:1009512414430
更新日期:2001-01-01 00:00:00
abstract::The centrosome is the major microtubule organizing center of the cell and as such it plays an important role in cytoskeletal organization and in the formation of the bipolar mitotic spindle. Centrosome defects, characterized by abnormal size, number, and microtubule nucleation capacity, are distinguishing features of ...
journal_title:Journal of mammary gland biology and neoplasia
pub_type: 杂志文章,评审
doi:10.1023/a:1011312808421
更新日期:2001-04-01 00:00:00