Abstract:
:The role of hsp27 as an inhibitor of actin polymerization was considered in the context of the actin cytoskeleton and its relationship with focal adhesion formation. The aim of this study was to evaluate the potential effects of hsp27 on focal adhesion formation as a relevant biological consequence of actin stress fiber formation. When hsp27 was overexpressed in stably transfected cells, cell attachment was delayed and recovery of disrupted stress fibers and focal adhesions was limited. In ROS 17/2.8 cells, heat shock caused the reversible disruption of stress fibers and focal adhesions. The loss of stress fibers and focal adhesions was associated with reduced phosphotyrosine on the focal adhesion kinase (FAK). Microinjection of recombinant 6-His hsp27 and phosphorylated 6-His hsp27 was used to demonstrate that nonphosphorylated hsp27 prevented the recovery of stress fibers and focal adhesions. These results provide in vivo evidence that hsp27 acts as an inhibitor of actin polymerization that can alter cellular interactions with extracellular environments by perturbation of stress fibers, and subsequently focal adhesions.
journal_name
J Cell Physioljournal_title
Journal of cellular physiologyauthors
Schneider GB,Hamano H,Cooper LFdoi
10.1002/(SICI)1097-4652(199812)177:4<575::AID-JCP8keywords:
subject
Has Abstractpub_date
1998-12-01 00:00:00pages
575-84issue
4eissn
0021-9541issn
1097-4652pii
10.1002/(SICI)1097-4652(199812)177:4<575::AID-JCP8journal_volume
177pub_type
杂志文章abstract::Incubation of alveolar macrophages or hepatocytes in media in which Na+ is replaced by K+ ("isotonic-K buffer") inhibited the movement of internalized ligand from late endosomes to lysosomes (Ward et al.: Journal of Cell Biology 110:1013-1022, 1990). In this study we investigate the mechanism responsible for the isoto...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
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更新日期:1990-12-01 00:00:00
abstract::Mouse L-929 cells were subjected to increasing concentrations of sorbitol, which remove cell water and reduce volume osmotically. The rate of lactate production from glucose was significantly higher in osmotically perturbed cells than in controls, both in monolayers and in suspensions. L cells can apparently use sorbi...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
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journal_title:Journal of cellular physiology
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abstract::Dermal fibroblasts exposed to low oxygen tension show upregulated synthesis of transforming growth factor-beta 1 (TGF-beta 1), an established stimulatory peptide in the formation of extracellular matrix proteins. In this report, procollagen synthesis was measured in cultures of confluent adult human dermal fibroblasts...
journal_title:Journal of cellular physiology
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更新日期:1993-11-01 00:00:00
abstract::Cornea is an avascular and transparent tissue that focuses light on retina. Cornea is supported by the corneal-endothelial layer through regulation of hydration homeostasis. Restoring vision in patients afflicted with corneal endothelium dysfunction-mediated blindness most often requires corneal transplantation (CT), ...
journal_title:Journal of cellular physiology
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更新日期:2020-10-08 00:00:00
abstract::Rous sarcoma virus (RSV)-infected chicken embryo cells were used to study the effect of viral transformation on the hormone-stimulated synthesis of cyclic AMP. Transformation by RSV greatly increased the cells' ability to synthesize and accumulate cyclic AMP in response to the beta-adrenergic agonist isoproterenol as ...
journal_title:Journal of cellular physiology
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更新日期:1982-06-01 00:00:00
abstract::Tenascin-C, a six-armed extracellular matrix glycoprotein, is expressed in a temporally and spatially restricted pattern during carcinogenesis and invasion or metastasis of carcinoma cells in association with stromal-epithelial interactions. The human epidermoid carcinoma-derived cell lines, A431 and HEp-2, which do n...
journal_title:Journal of cellular physiology
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更新日期:1995-10-01 00:00:00
abstract::Vascular smooth muscle cell (VSMC) hyperplasia plays a central role in chronic and acute vascular pathology including arteriosclerosis and restenosis following vascular surgery. The glycosaminoglycans of the heparan sulfate class, including heparin, inhibit VSMC proliferation in animals and in culture. Heparin binds t...
journal_title:Journal of cellular physiology
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更新日期:1997-12-01 00:00:00
abstract::The nuclear lamina is a fibrous structure at the nucleoplasmic surface of the inner nuclear membrane. Its assembly state is regulated by phosphorylation of its protein components, the lamins A, B, and C. The isoprenylation of the lamins is essential for their proper membrane anchoring and functionality. The content an...
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更新日期:1997-05-01 00:00:00
abstract::The effects of ouabain on the growth of murine lymphoblasts in vitro have been studied. Exposure of cells to ouabain (0.1 mM) initially inhibited 86Rb+ uptake rate, reduced the intracellular potassium concentration, and decreased population growth rates. Continued exposure to the same ouabain concentration resulted in...
journal_title:Journal of cellular physiology
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更新日期:1975-04-01 00:00:00
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journal_title:Journal of cellular physiology
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更新日期:1991-11-01 00:00:00
abstract::Cover: Diagram illustrating the chromatic median analysis. See article by Pliss et al. on pages 427-439. ...
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更新日期:2015-02-01 00:00:00
abstract::Cancer-associated fibroblasts (CAFs) in the tumor microenvironment play major roles in supporting cancer progression. A previous report showed that SPIN90 downregulation is correlated with CAF activation and that SPIN90-deficient CAFs promote breast cancer progression. However, the mechanisms that mediate cancer-strom...
journal_title:Journal of cellular physiology
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更新日期:2020-05-01 00:00:00
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journal_title:Journal of cellular physiology
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更新日期:1989-02-01 00:00:00
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journal_title:Journal of cellular physiology
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journal_title:Journal of cellular physiology
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更新日期:2010-02-01 00:00:00
abstract::Cdk9/Cyclin T1 complex is very important in controlling specific differentiative pathways of several cell types. Limited data are available regarding the expression of Cdk9/Cyclin T1 in hematopoietic and lymphoid tissues. Cdk9/Cyclin T1 expression seems to be related to particular stages of lymphoid differentiation/ac...
journal_title:Journal of cellular physiology
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doi:10.1002/jcp.21311
更新日期:2008-04-01 00:00:00
abstract::Osteopontin (OPN) is a major non-collagenous bone matrix protein implicated in the regulation of cell function. Although OPN is rich in the cementum of the tooth, the significance of OPN in this tissue is not understood. Tooth root resorption is the most frequent complication of orthodontic tooth movement (TM). The ob...
journal_title:Journal of cellular physiology
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doi:10.1002/jcp.21250
更新日期:2008-03-01 00:00:00
abstract::Islet cell transplantation, as a treatment of type 1 diabetes, has a lot of complexity such as allograft rejections and an insufficient number of donors. The liver can be used as a replacement for endogenous insulin production. Hepatocytes can inherently respond to glucose levels and secrete proteins. Utilization of m...
journal_title:Journal of cellular physiology
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abstract::Recently, after the identification of ferritin light chain (L-ferritin) gene and protein over-expression in human metastatic melanoma cells, we engineered, starting from the LM metastatic melanoma cell line, clones in which L-ferritin gene expression was down-regulated by the stable expression of a specific antisense ...
journal_title:Journal of cellular physiology
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更新日期:1987-12-01 00:00:00
abstract::The C3H/10T 1/2 embryo cell line, which is nontumorigenic when inoculated subcutaneously in saline suspension, produces tumors when implanted subcutaneously attached to 1 X 5 X 10 mm plastic plates. Under these in vivo conditions there is direct selection for "spontaneous" transformants that have undergone the specifi...
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abstract::Over-production and activation of osteoclasts is a common feature of osteolytic conditions such as osteoporosis, tumor-associated osteolysis, and inflammatory bone erosion. Cyanidin Chloride, a subclass of anthocyanin, displays antioxidant and anti-carcinogenesis properties, but its role in osteoclastic bone resorptio...
journal_title:Journal of cellular physiology
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abstract::C1q/tumor necrosis factor-related protein-6 (CTRP6) is a newly identified adipokine involved in diverse biological processes. However, its role in salivary glands remains unknown. Here, we demonstrated that CTRP6 was mainly distributed in the nuclei, apicolateral membranes, and cytoplasm of human submandibular glands ...
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