Abstract:
:Adhesion to the extracellular matrix regulates numerous changes in the actin cytoskeleton by regulating the activity of the Rho family of small GTPases. Here, we report that adhesion and the associated changes in cell shape and cytoskeletal tension are all required for GTP-bound RhoA to activate its downstream effector, ROCK. Using an in vitro kinase assay for endogenous ROCK, we found that cells in suspension, attached on substrates coated with low density fibronectin, or on spreading-restrictive micropatterned islands all exhibited low ROCK activity and correspondingly low myosin light chain phosphorylation, in the face of high levels of GTP-bound RhoA. In contrast, allowing cells to spread against substrates rescued ROCK and myosin activity. Interestingly, inhibition of tension with cytochalasin D or blebbistatin also inhibited ROCK activity within 20 min. The abrogation of ROCK activity by cell detachment or inhibition of tension could not be rescued by constitutively active RhoA-V14. These results suggest the existence of a feedback loop between cytoskeletal tension, adhesion maturation, and ROCK signaling that likely contributes to numerous mechanochemical processes.
journal_name
Exp Cell Resjournal_title
Experimental cell researchauthors
Bhadriraju K,Yang M,Alom Ruiz S,Pirone D,Tan J,Chen CSdoi
10.1016/j.yexcr.2007.07.002subject
Has Abstractpub_date
2007-10-01 00:00:00pages
3616-23issue
16eissn
0014-4827issn
1090-2422pii
S0014-4827(07)00322-9journal_volume
313pub_type
杂志文章abstract::Previous studies have indicated that space flight affects the activation of lymphocytes from humans, monkeys, and rodents. In rats, where lymphocytes from blood, spleen, and lymph nodes have been tested, the accumulated data suggest that the effects of flight on various cells are lymphoid organ-specific. Thus, cells m...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1995.1210
更新日期:1995-07-01 00:00:00
abstract::Various cell adhesion molecules mediate the diverse functions of the vascular endothelium, such as cell adhesion, neutrophil migration, and angiogenesis. In order to identify cell adhesion molecules important for angiogenesis, we used an in vitro model (Chalupowicz, Chowdhury, Bach, Barsigian, and Martinez, J. Cell Bi...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1997.3844
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abstract::The extracellular matrix in the healthy breast has an important tumor suppressive role, whereas the abnormal ECM in tumors can promote aggressiveness, and has been linked to breast cancer relapse, survival and resistance to chemotherapy. This review article gives an overview of the elements of the ECM which have been ...
journal_title:Experimental cell research
pub_type: 杂志文章,评审
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abstract::Methylated amino acids inhibit lysosomal function in cultured rat heart myocytes more effectively than the classically employed lysosomotropic weak bases. Moreover, L-leucine methyl ester (L-Leu-OMe) or L-methionine methyl ester (L-Meth-OMe) do not alter lysosomal pH or inactivate lysosomal cysteine proteinases, but d...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(84)90690-6
更新日期:1984-09-01 00:00:00
abstract::Incubation of cultured cells at 20 degrees C blocks the transport of newly synthesized plasma membrane proteins, and the proteins accumulate intracellularly in a terminally glycosylated form. When baby hamster kidney cells are infected with the ts O45 mutant of vesicular stomatitis virus, and incubated at 20 degrees C...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(88)90190-5
更新日期:1988-04-01 00:00:00
abstract::A popular criterion of cell-cell communication in tissue cultures is dye coupling: the ability of the injected fluorescent dye of low molecular weight to be transferred from one cell to another. We report about a new factor which induces cell-to-cell dye coupling in previously uncoupled epithelial sheets. Paradoxicall...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(88)90204-2
更新日期:1988-04-01 00:00:00
abstract::It has been reported that cholesterol-lowing agents can ameliorate severity of myocarditis. However, the beneficial effect of the agents has been claimed to be independent of cholesterol reduction as there is no significant change in the plasma cholesterol level in myocarditis. In the present study, using experimental...
journal_title:Experimental cell research
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abstract::The altered patterns of expression of gangliosides during density-dependent growth inhibition, oncogenic transformation, and embryogenesis suggest that gangliosides, sialylated membrane glycolipids, may affect cellular proliferation and differentiation. Gangliosides of the "b" pathway of ganglioside synthesis, includi...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1995.1070
更新日期:1995-03-01 00:00:00
abstract::Nucleoporins (Nups) are a large and diverse family of proteins that mediate nucleocytoplasmic transport at interphase of vertebrate cells. Nups also function in mitosis progression. However, whether Nups are involved in oocyte meiosis progression is still rarely known. In this study, we delineated the roles and regula...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2018.09.004
更新日期:2018-10-15 00:00:00
abstract::Unraveling the mechanisms underlying cellular senescence will contribute to the understanding of processes involved in aging and cancer. We sought to determine whether expression of cellular factors in senescent WI-38 human fibroblasts was sufficient to induce nuclear DNA synthesis. Expression by recombinant adenoviru...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.2001.5352
更新日期:2001-11-01 00:00:00
abstract::A monoclonal antibody specific for vimentin is described which, by immunofluorescence and immunoelectron microscopy, decorates fibrillar and/or granular structures in mitotic and early postmitotic cells but does not react with vimentin filaments of interphase stages of various cultured cells (rat vascular smooth muscl...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(84)90181-2
更新日期:1984-10-01 00:00:00
abstract::The intracellular distribution of the glucocorticosteroid and progesterone receptors (GR and PR, respectively) was studied immunohistochemically. In control adrenalectomized (Adx) rat liver, immunostaining of paraffin sections revealed GR in cell nuclei, with a wide range of intensity between individuals. Following de...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(89)90106-7
更新日期:1989-04-01 00:00:00
abstract::Cancer cell survival is frequently dependent on the elevated levels of members of the Bcl-2 family of prosurvival proteins that bind to and inactivate BH3-domain pro-apoptotic cellular proteins. Small molecules that inhibit the protein-protein interactions between prosurvival and proapoptotic Bcl-2 family members (so-...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2014.11.022
更新日期:2015-03-15 00:00:00
abstract:BACKGROUND:Müller cell gliosis not only plays an important physiological role by maintaining retinal neuronal homeostasis but is also associated with multiple pathological events in the retina, including optic nerve crush (ONC) injury. Modulating Müller cell gliosis contributes to the creation of a permissive environme...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2019.01.009
更新日期:2019-02-15 00:00:00
abstract::Changes in the expression pattern of DNA polymerase beta gene during rat lung, brain, and testis development have been investigated. A decrease in the level of beta-pol mRNA was observed during postnatal development of lung and brain. By contrast, an almost 20-fold increase in the level of beta-pol mRNA was observed d...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(90)90034-8
更新日期:1990-11-01 00:00:00
abstract::We have previously shown that following psoralen photoactivation (PUVA treatment) human dermal fibroblasts undergo long-term growth arrest as well as morphological and functional changes reminiscent of cellular senescence [ 1 ]. In the absence of molecular data on what constitutes normal senescence, it has been diffic...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.2002.5476
更新日期:2002-04-01 00:00:00
abstract::Hepatocellular carcinoma (HCC) is one of the most common cancers diagnosed worldwide. However, the mechanism underlying HCC pathogenesis remains unknown. In the present study, TRIM24 was found increased in human HCC clinical samples and positively correlated with HCC tumor grade. Furthermore, TRIM24 knockdown inhibits...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2018.04.006
更新日期:2018-06-15 00:00:00
abstract::The mammalian Hippo pathway comprises mammalian Ste20-like kinases (MST1/2) and large tumor suppressor kinases (LATS1/2). LATS1/2, which are activated by MST1/2, phosphorylate a transcriptional co-activator, yes-associated protein (YAP), and induce the recruitment of YAP by 14-3-3 to cytoplasm, so that the TEAD-depend...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2013.01.020
更新日期:2013-04-15 00:00:00
abstract:BACKGROUND AND OBJECTIVE:In recent years, immunotherapy for the treatment of tumors have been established. Dendritic cells (DCs) are extremely efficient and professional antigen presenting cells (APCs), which are an important target for immune therapeutic interventions in cancer. In present study, we investigated wheth...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2016.10.019
更新日期:2016-12-10 00:00:00
abstract::Since the migration of human fetal skin fibroblasts into a denuded area of a cell monolayer has been demonstrated to be serum-independent (fetal phenotype), whereas that of adult-donor skin fibroblasts is serum-dependent (adult phenotype), a study was carried out to determine at which life stage the fetal-adult phenot...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1995.1342
更新日期:1995-10-01 00:00:00
abstract::Oligomerization of Fas receptor by its ligand, FasL, activates a signaling cascade that leads to apoptosis of Fas bearing cells. Interestingly, many epithelia coexpress Fas and FasL, yet FasL does not trigger Fas present on the same or neighboring cells to induce spontaneous apoptosis. Here, we show that Fas and FasL ...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/s0014-4827(02)00056-3
更新日期:2003-04-01 00:00:00
abstract::Members of the cadherin family of cell adhesion molecules participate in calcium-dependent cell-cell adhesions that are necessary for the cell sorting events that regulate early developmental processes. Although individual cadherin molecules have been shown to participate in tissue histogenesis, the regulation of func...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.2000.4819
更新日期:2000-04-10 00:00:00
abstract::We present evidence for the possible involvement of both the RB and p53 proteins in the regulation of cellular senescence. Human fibroblasts immortalized with an inducible SV40 T-antigen become senescent following the de-induction of T-antigen. Plasmids expressing an alternative source of intact T-antigen restore prol...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(91)90453-2
更新日期:1991-09-01 00:00:00
abstract::Recently, SIRT5 was reported to be a predominant desuccinylase and demalonylase in mitochondria. Ablation of SIRT5 enhances the systemic succinylation and malonylation of mitochondrial proteins, including various metabolic enzymes; however, its function in pancreatic β cells has not yet been clarified. In this study, ...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2018.08.011
更新日期:2018-10-01 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:OBJECTIVES:Vascular calcification is highly prevalent in patients with chronic kidney disease (CKD) and contributes to increased risk of cardiovascular disease and mortality. Accumulated evidences suggested that vascular smooth muscle cells (VSMCs) to osteoblast-like cells transdifferentiation (VOT) plays a crucial rol...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2014.01.025
更新日期:2014-04-01 00:00:00
abstract::The protein encoded by C-terminal alternatively spliced p53 mRNA (p53as) has been shown previously to occur naturally in mouse cells and to bind sequence-specifically to DNA more efficiently than p53 (p53r, regular form). In the current study, p53as and p53r proteins ectopically expressed in p53-deficient cells each t...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.2002.5596
更新日期:2002-10-01 00:00:00
abstract::Galectin-3, a beta-galactoside-binding protein, has been shown to be involved in multiple biological processes through interaction with its complementary glycoconjugates. Here we provide the first evidence of galectin-3 as a mitogen. Incubation of quiescent cultures of normal human lung fibroblast IMR-90 cells with re...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1998.4253
更新日期:1998-12-15 00:00:00
abstract::The purpose of the present study was to determine if hemodynamic shear stress increases free cytosolic Ca2+ concentration ([Ca2+]i) of cultured pulmonary artery endothelial cells exposed to steady laminar fluid flow in a parallel plate chamber. Average [Ca2+]i was estimated by measuring cell-associated fura-2 fluoresc...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(92)90145-x
更新日期:1992-01-01 00:00:00
abstract::The differential activation of cyclin and cyclin-dependent kinase genes by the adenovirus E1A gene product (E1A) or serum factors was studied with a rat 3Y1 derivative cell line, g12-21, in which the E1A12S cDNA can be expressed in response to dexamethasone (dex). The induction of DNA synthesis in quiescent g12-21 cel...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1993.1262
更新日期:1993-10-01 00:00:00