Abstract：
:Breast tumor cells enter the bloodstream long before the development of clinically evident metastasis. However, the early presence of such bloodborne cells predicts poor patient outcome. Nearly 90% of human breast tumors arise as carcinomas from mammary epithelial cells, so it is important to study how these cells respond to the detached conditions that they would experience in the bloodstream. We report here that mammary epithelial cell lines produce long and dynamic protrusions of the plasma membrane when detached. Although human and mouse mammary epithelial cell lines die by apoptosis within 16 h of detachment, this protrusive response persists for days in cells overexpressing either Bcl-2 or Bcl-xL. Unlike actin-dependent invadopodia and podosomes, these protrusions are actually enhanced by actin depolymerization with Cytochalasin-D or Latrunculin-A. Immunofluorescence and Western blotting demonstrate that the protrusions are enriched in detyrosinated Glu-tubulin, a post-translationally modified form of alpha-tubulin that is found in stabilized microtubules. Video microscopy indicates that these protrusions promote cell-cell attachment, and inhibiting microtubule-based protrusions correlates with reduced extracellular matrix attachment. Since bloodborne metastasis depends on both cell-cell and cell-matrix attachment, microtubule-based protrusions in detached mammary epithelial cells provide a novel mechanism that could influence the metastatic spread of breast tumors.
journal_name
Exp Cell Resjournal_title
Experimental cell researchauthors
Whipple RA,Cheung AM,Martin SSdoi
10.1016/j.yexcr.2007.02.001subject
Has Abstractpub_date
2007-04-15 00:00:00pages
1326-36issue
7eissn
0014-4827issn
1090-2422pii
S0014-4827(07)00051-1journal_volume
313pub_type
杂志文章abstract：:Tumor cell adhesion within host organ microvasculature, its stabilization and invasion into host organ parenchyma appear to be important steps during formation of distant metastasis. These interactions of circulating tumor cells with the host organs occur in the presence of fluid shear forces and soluble and cellular ...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2004.06.001
更新日期：2004-09-10 00:00:00
abstract：:The characteristics underlying cytosolic free calcium oscillation were evaluated by superfused dual wave-length microspectrofluorometry of fura-2-loaded single acinar cells from rat pancreas. Application of a physiological concentration of cholecystokinin octapeptide (CCK) (20 pM) induced a small basal increase in cyt...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(90)90173-8
更新日期：1990-06-01 00:00:00
abstract：:Pigmentation of RVH 421 human melanoma cells is induced when cell division is inhibited by cytochalasin D or L-tyrosine phosphate. Increased pigmentation correlates with increased tyrosinase activity when this is monitored over a time-course. Parallel measurements show that the amount of tyrosinase mRNA correlates wit...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(92)90431-7
更新日期：1992-04-01 00:00:00
abstract：:The ST6Gal-I glycosyltransferase, which adds alpha2-6-linked sialic acids to glycoproteins, is overexpressed in colon adenocarcinoma, and enzyme activity is correlated with tumor cell invasiveness. Previously we reported that forced expression of oncogenic ras in HD3 colonocytes causes upregulation of ST6Gal-I, leadin...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2008.07.021
更新日期：2008-10-01 00:00:00
abstract：:Alternative splicing is an important mechanism that can disrupt cell cycle control resulting in tumorigenesis. Although many alterations of Transforming Growth Factor Beta (TGFβ) signaling are reported in cancers, the role of splice aberrations in destabilizing this signaling is the least understood mechanism. In this...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2014.05.004
更新日期：2014-09-10 00:00:00
abstract：:Basic fibroblast growth factor (bFGF) is a mitogen and a survival factor in fibroblasts and endothelial cells. It acts as an angiogenesis factor in breast cancer, but paradoxically inhibits proliferation in several breast cancer cell lines. In this study, we investigated the effects of bFGF on the survival of MCF-7 hu...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.1997.3820
更新日期：1998-01-10 00:00:00
abstract：:In our recent studies, we have demonstrated that monolayer cultures of bovine aortic endothelial (BAE) cells that do not express type I collagen also fail to express and synthesize decorin, a small chondroitin/dermatan sulfate proteoglycan that interacts with type I collagen and regulates collagen fibrillogenesis in v...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(92)90013-x
更新日期：1992-12-01 00:00:00
abstract：:Primary cultures of human keratinocytes form a multilayered tissue. By incubating the tissue cultures in Ca2(+)-free medium the differentiated cell layers can be stripped off leaving a basal cell monolayer. We have developed a method for high-frequency transfection of these epidermal basal cells with genes inserted in...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(90)90231-x
更新日期：1990-08-01 00:00:00
abstract：:As retinal histogenesis proceeds there is a pronounced increase in the expression of fibroblast growth factor (FGF), reaching its maximum in the mature retina and largely in terminal differentiated retinal neurons. Recent in vivo evidence suggests that exogenous FGF functions as a differentiation and survival factor f...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.1998.4048
更新日期：1998-05-25 00:00:00
abstract：:In culture, nontransformed human diploid fibroblasts divide a limited number of times, resulting in a nonproliferating senescent cell culture which exhibits an altered pattern of gene expression. Previously we reported that an early event in the process of replicative senescence was an increase in the synthesis of two...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.1996.0326
更新日期：1996-11-01 00:00:00
abstract：:Human calmodulin-like protein (CLP) is a calcium-binding protein down-regulated in a cell culture model of mammary tumorigenesis as well as in a majority of breast cancers in vivo. CLP down-regulation may be a result of the poorly differentiated state of these cell lines and tumors, or CLP expression may be incompatib...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.2001.5254
更新日期：2001-07-15 00:00:00
abstract：:Idiopathic pulmonary fibrosis (IPF), a progressive disorder of unknown etiology, is characterized by pathological lung fibroblast activation and proliferation resulting in abnormal deposition of extracellular matrix proteins within the lung parenchyma. The pathophysiological roles of exosomal microRNAs in pulmonary fi...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2020.112416
更新日期：2021-01-15 00:00:00
abstract：:It is generally accepted that Friedreich's ataxia (FRDA) is caused by a deficiency in frataxin expression, a mitochondrial protein involved in iron homeostasis, which mainly affects the brain, dorsal root ganglia of the spinal cord, heart and in certain cases the pancreas. However, there is little knowledge as to othe...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2015.04.013
更新日期：2015-07-01 00:00:00
abstract：:Utilizing both the TET-OFF and TET-ON systems in combination with transcriptional control elements of the Tie-2 gene, we have established a series of transgenic activator and responder mice for TET-regulated endothelial cell-specific transgene expression in double transgenic mouse embryos and in adult mice. TET-regula...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2007.12.026
更新日期：2008-04-01 00:00:00
abstract：:1,25-dihydroxyvitamin D(3) (VD(3)) induces differentiation in a number of leukemia cell lines and under various conditions is able to either stimulate or inhibit nuclear factor kappa B (NF-kappaB) activity. Here we report a time-dependent biphasic regulation of NF-kappaB in VD(3)-treated HL-60 leukemia cells. After VD...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2007.02.022
更新日期：2007-05-01 00:00:00
abstract：:Translation is mediated partly by regulation of free eukaryotic initiation factor 4E (eIF4E) levels through PI3K-Akt-mTOR signaling. Cancer cells treated with the plant-derived perillyl alcohol (POH) or the mechanistic target of rapamycin (mTOR) inhibitor rapamycin dephosphorylate eIF4E-binding protein (4E-BP1) and at...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2013.05.029
更新日期：2013-08-01 00:00:00
abstract：:Proliferation of human B- and T-lymphoid cell lines including Raji and Akata cells was found to be arrested at the G1 stage in the cell cycle by dimethyl sulfoxide (DMSO). The G1 arrest by DMSO occurred gradually and was completed within 96 h after addition of 1.5% DMSO concomitantly with a decrease in growth rate. Pr...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(90)90108-m
更新日期：1990-03-01 00:00:00
abstract：:We used a glioblastoma multiform (GBM) cell line to study the mechanism of cellular regulation of nitric oxide (NO) production. Our experiments indicate a confluent monolayer of GBM cells to release NO as measured through its oxidized NO2 form which gradually accumulates and reaches a peak by 7 to 10 days of culture. ...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.1994.1020
更新日期：1994-01-01 00:00:00
abstract：:Inflammatory cells such as macrophages can play a pro-tumorigenic role in the tumor stroma. Tumor-associated macrophages (TAMs) generally display an M2 phenotype with tumor-promoting activity; however, the mechanisms regulating the TAM phenotype remain unclear. Complement 5a (C5a) is a cytokine-like polypeptide that i...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2018.03.009
更新日期：2018-05-15 00:00:00
abstract：:Invasion processes underlie or accompany several pathological processes but only a limited number of high-throughput capable phenotypic models exist to test anti-invasive compounds in vitro. We here evaluated 3D co-cultures as a high-content phenotypic screening system for fibrotic invasive processes. 3D multicellular...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2015.10.003
更新日期：2015-11-15 00:00:00
abstract：:Xenopus oocytes carry IGF-I receptors, and undergo meiotic maturation in response to binding of IGF-I or insulin to the IGF-I receptor. Maturation is initiated upon activation of the IGF-I receptor tyrosine kinase and requires tyrosine dephosphorylation of p34cdc2, the kinase component of maturation promoting factor (...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(91)90508-r
更新日期：1991-07-01 00:00:00
abstract：:Implantation of myoblasts is a strategy used to enhance the regeneration of skeletal muscle tissue in vivo. In mouse models, myogenic cell lines and primary cells have been employed with different yields of adult muscle tissue formed. The present work is a study of some developmental features of expanded primary mouse...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.2002.5562
更新日期：2002-08-01 00:00:00
abstract：:We made use of the 9-(1'-pyrene)nonanol/ultraviolet (P9OH/UV) method and isolated peroxisome-deficient mutant cells. TKa cells, the wild-type Chinese hamster ovary (CHO) cells, CHO-K1, that had been stably transfected with cDNA encoding Pex2p (formerly peroxisome assembly factor-1, PAF-1) were used to avoid frequent i...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.1997.3552
更新日期：1997-05-25 00:00:00
abstract：:Sepsis is a major cause of mortality in seriously ill patients characterized by a series of severe systemic inflammatory responses due to an infection. Thus, there is a critically need to search more accurate biomarkers and targets for diagnosis and treatment of sepsis. Our study showed that miR-212-3p was up-regulate...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2016.12.008
更新日期：2017-01-15 00:00:00
abstract：:The cellular plasma membrane becomes permeable to macromolecules during the cell injury process. This results in exposure of the interior of the cell to plasma proteins and to high-affinity binding of the Fc part of IgG to intermediate filaments (Hansson, G K, Starkebaum, G A, Benditt, E P & Schwartz, S M, Proc natl a...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(87)90311-9
更新日期：1987-06-01 00:00:00
abstract：:In mammalian cells, it has been shown that adjacent multiple DNA replicons, termed a replicon cluster or a replicon domain, are replicated coordinately in a defined temporal order during the DNA synthetic (S) phase. However, no intranuclear structure of this replicon domain has been revealed in the nucleus labelled wi...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(86)90583-5
更新日期：1986-08-01 00:00:00
abstract：:Induced pluripotent stem cells (iPSCs) hold tremendous potential for the development of new regenerative medicine therapies and the study of molecular mechanisms of pluripotency and development. However, reactivation of c-Myc, which results in tumor formation in chimeric mice, is a major roadblock in the translation o...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2013.09.014
更新日期：2013-12-10 00:00:00
abstract：:The c-Myb transcription factor plays a central role in the regulation of cell growth and differentiation of hematopoietic cells. Being the product of a proto-oncogene, one would expect c-Myb function to be modulated by signal transduction pathways, but our knowledge on such regulation of c-Myb is rather limited. Recen...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2004.03.014
更新日期：2004-07-01 00:00:00
abstract：:Upregulated ERK1/2 activity is often correlated with AKT activation during prostate cancer (PCa) progression, yet their functional relation needs elucidation. Using androgen-deprived LNCaP cells, in which ERK1/2 activation occurs in strong correlation with AKT activation, we found that AKT-mediated B-Raf regulation is...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2013.05.008
更新日期：2013-07-15 00:00:00
abstract：:The influence of the cylindrical substratum surface on the actin microfilament bundle and the extracellular matrix (fibronectin and laminin) patterns in nontransformed epithelial cells of the IAR-2 rat line and in their N-ras-transformed descendants, IAR-ras-c4 cells, was studied. The cells were cultured on substrata ...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.1996.0354
更新日期：1996-11-25 00:00:00
