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 connective tissue degrading metalloproteinases, collagenase and stromelysin, and a decrease in the synthesis of the physiological inhibitor of those enzymes, tissue inhibitor of metalloproteinases-1 (TIMP-1). The cytokine TGF-beta1 is known to regulate the expression of each of these three genes and to be synthesized and secreted by cultured human fibroblasts. This suggested the hypothesis that the age-specific modulation of collagenase, stromelysin, and TIMP-1 expression is the result of a change in TGF-beta1 activity during replicative senescence. To test this hypothesis, the responses of early, mid, and late passage (presenescent) fibroblast cell cultures to a TGF-beta neutralizing antibody were evaluated. In early passage cell cultures, exposure to TGF-beta neutralizing antibody resulted in a significant increase in the expression of collagenase and stromelysin and decreased TIMP-1 expression. The antibody did not affect expression of either of those genes by late passage cell cultures, although late passage cultures did respond to added TGF-beta1. Quantification of the levels of active TGF-beta, using a growth inhibition assay, indicates that the level of active TGF-beta1 is decreased during replicative senescence, supporting the conclusion that the modulation of collagenase, stromelysin, and TIMP-1 expression results from diminished TGF-beta activity.
journal_name
Exp Cell Resjournal_title
Experimental cell researchauthors
Zeng G,McCue HM,Mastrangelo L,Millis AJdoi
10.1006/excr.1996.0326subject
Has Abstractpub_date
1996-11-01 00:00:00pages
271-6issue
2eissn
0014-4827issn
1090-2422pii
S0014-4827(96)90326-2journal_volume
228pub_type
杂志文章abstract：:The epidermal growth factor (EGF) receptor is well known as a mediator of mitogenic signaling and its tyrosine kinase activity has been suggested as a viable target in cancer chemotherapy. To explore the consequences of abolishing the kinase activity of this receptor, we have utilized a potent and specific inhibitor o...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.1997.3571
更新日期：1997-06-15 00:00:00
abstract：:Adriamycin, an anticancer agent acting on topoisomerase II, promotes the arrest of cell division and neurite extension in a "neurite-minus" murine neuroblastoma cell line, N1A-103. This morphological differentiation is accompanied by a blockade in the S phase of the cell cycle, modification of the amount of peripherin...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(92)90041-6
更新日期：1992-11-01 00:00:00
abstract：:The precise distribution of DNA within the resting human T lymphocyte nucleolus has been investigated, at the ultrastructural level, by cytochemical and molecular immunocytochemical techniques. The nucleolus is partially enveloped by a layer of condensed chromatin which, at several places, penetrates into the nucleola...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.1993.1110
更新日期：1993-04-01 00:00:00
abstract：:Previous studies have shown that calpains are autolytically cleaved during the disease process of mdx dystrophy, a mouse model for Duchenne muscular dystrophy, indicating that calpains may be activated and play a role in proteolysis that occurs in muscular dystrophy (J. Biol. Chem. 270(18), 10909-10914, 1995). In the ...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.1996.0227
更新日期：1996-08-01 00:00:00
abstract：:Transcription profiling of early embryos emphasizes that differential gene expression is a fundamental control mechanism of development. Precise regulatory mechanisms operate on a background of epigenetic changes in chromatin composition, modification, and architecture that are integral for the development of a plurip...
journal_title：Experimental cell research
pub_type： 杂志文章,评审
doi：10.1016/j.yexcr.2005.06.023
更新日期：2005-10-01 00:00:00
abstract：:The lack of available, well characterized, established, domestic porcine cell lines hinders the advancement of porcine cellular immunology. A case of multicentric lymphoma was diagnosed in a market weight pig at the time of slaughter. Affected lymph nodes and spleen were collected and used for single cell isolation an...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2020.111986
更新日期：2020-05-15 00:00:00
abstract：:Drosophila sHSPs (small heat shock proteins) are expressed in the absence of stress in specific regions of the central nervous system and in gonads of young adults flies. In these two organs, the sHSPs show a cell-specific and developmental stage-specific pattern of expression suggesting distinct regulation and functi...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.1996.0052
更新日期：1996-02-25 00:00:00
abstract：RATIONALE:Vessel formation is a crucial event in tissue repair after injury. Thus, one assumption of innovative therapeutic approaches is the understanding of its molecular mechanisms. Notwithstanding our knowledge of the role of Protein Kinase C epsilon (PKCε) in cardio-protection and vascular restenosis, its role in ...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2014.11.011
更新日期：2015-01-15 00:00:00
abstract：:A monoclonal antibody (aRB1C1) raised against an Rb fusion protein detects a limited number (4-10) of relatively large intranuclear foci in an EBV-immortalized cord blood cell line (IB4). These domains also bind an anti-EBNA-5 monoclonal antibody. The Rb antibody reactive sites also co-localize with the SV40 T antigen...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(91)90438-z
更新日期：1991-12-01 00:00:00
abstract：:A monoclonal murine antibody (No-114) is described which reacts specifically with a polypeptide of molecular weight (Mr) 180 000 present in low-speed nuclear pellets from oocytes and somatic cells of Xenopus laevis and X. borealis and in isolated amplified nucleoli. Two-dimensional gel electrophoresis has revealed the...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(84)90604-9
更新日期：1984-08-01 00:00:00
abstract：:The hemidesmosome is an adhesion structure of the epidermal-dermal junction in keratinocytes. When keratinocytes migrate laterally or upward to differentiate, they must control the formation and disintegration of the hemidesmosomes. When keratinocytes are cultured in low-calcium (below 0.1 mM) medium, all cells behave...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(92)90034-6
更新日期：1992-11-01 00:00:00
abstract：:Tubules and vesicles are membrane carriers involved in traffic along the endocytic and secretory routes. The small GTPase Arf6 regulates a recycling branch of short dynamic tubular intermediates used by major histocompatibility class I (MHC-I) molecules to traffic through vesicles between endosomes and the plasma memb...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2005.01.021
更新日期：2005-05-15 00:00:00
abstract：:Intramuscular adipose tissue and fibrous tissue are observed in some skeletal muscle pathologies such as Duchenne muscular dystrophy and sarcopenia, and affect muscle strength and myogenesis. They originate from common fibrogenic/adipogenic cells in the skeletal muscle. Thus, elucidating the regulatory mechanisms unde...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2016.08.023
更新日期：2016-10-01 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：:Specific cholecystokinin (CCK) receptor and gastrin receptor antagonists were used to assess what role, if any, these receptors have in autocrine cell growth. Although the cholecystokinin receptor antagonist, L-364,718, inhibited cell proliferation in a broad spectrum of cell lines, the gastrin antagonist, L-365,260, ...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(91)90174-s
更新日期：1991-01-01 00:00:00
abstract：:Regulation of TSH receptor (TSHr) mRNA accumulation has been investigated in canine thyrocytes in primary culture by in situ hybridization experiments; the effects of the mitogenic thyrotropin (TSH), epidermal growth factor (EGF), and phorbol ester TPA (12-O-tetradecanoylphorbol-13-acetate) have been compared. Apart f...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(92)90451-d
更新日期：1992-04-01 00:00:00
abstract：:Impaired elastin fiber assembly is observed in the fetal ductus arteriosus (DA), associated with a reduced concentration of elastin binding protein (EBP), a 67-kDa galactolectin. It is also seen in cultured aortic (Ao) smooth muscle cells (SMC) following the release of the EBP by glycosaminoglycans rich in N-acetylgal...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(92)90008-v
更新日期：1992-12-01 00:00:00
abstract：:To measure the adhesion of cells expressing the neural cell adhesion molecule N-CAM, mouse Lmtk- fibroblast cells were transfected by a calcium phosphate precipitation technique with eucaryotic expression vectors encoding N-CAM polypeptides. We obtained cell lines expressing the 140-kDa transmembrane isoform of N-CAM ...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.1993.1041
更新日期：1993-02-01 00:00:00
abstract：:Gamma delta (γδ) T cell-based tumor immunotherapy has been one of the most promising cancer immunotherapeutic strategies. However, the key regulators of the Vγ9Vδ2 T cell-mediated antitumor response remain unclear. Recently, mounting reports have indicated that Tim-3 performs critical roles in the regulation of the ac...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2019.111719
更新日期：2020-01-01 00:00:00
abstract：:This study investigates how epithelial cells moving together function to coordinate their collective movement to repair a wound. Using a lens ex vivo mock cataract surgery model we show that region-specific reorganization of cell-cell junctions, cytoskeletal networks and myosin function along apical and basal domains ...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2013.12.021
更新日期：2014-03-10 00:00:00
abstract：:Spinal muscular atrophy (SMA), a recessive, neuromuscular disease, is caused by a mutation or deletion in the SMN1 gene. The SMN2 gene is present in the same region of chromosome 5 and is similar in DNA sequence to SMN1 except for a T at position +6 of exon 7 that is likely the predominant functional difference betwee...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2007.10.012
更新日期：2008-02-15 00:00:00
abstract：:The macrophages have different subtypes with different functions in immune response and disease. It has been generally accepted that M1 macrophages are responsible for stimulation of immune system and inflammation while M2 macrophages play a role in tissue repair. Irrespective of the type, macrophage functions depend ...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2016.02.004
更新日期：2016-02-15 00:00:00
abstract：:The effect of the cyclin-dependent (CDK) inhibitors olomoucine and roscovitine on cell kinetics was studied. To this end, nonsmall cell lung cancer (NSCLC) cell line MR65 and neuroblastoma cell line CHP-212 were pulse labeled with bromodeoxyuridine (BrdUrd) and chased in culture medium, to which various concentrations...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.1997.3700
更新日期：1997-10-10 00:00:00
abstract：:Among different cancers, incidence and mortality of colorectal cancer (CRC) is one of the highest. KRAS mutation is one of the underlying features in the pathogenesis of CRC with CRC tumors harboring mutant KRAS exhibiting a more aggressive behavior compared to CRC tumors with wild type KRAS. We had earlier shown that...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2018.08.016
更新日期：2018-12-15 00:00:00
abstract：:Ezrin-Radixin-Moesin (ERM) binding phosphoprotein 50 (EBP50, a.k.a. NHERF-1) is a scaffold protein essential for the localization and coordinated activity of apical transporters, enzymes and receptors in epithelial cells. EBP50 acts via multiple protein binding interactions, including oligomerization through interacti...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2005.02.011
更新日期：2005-05-15 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：: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：:Polo-like kinases (Plks) are essential for progression through mitosis. The activity of these kinases peak during M phase and this activation has been attributed to phosphorylation. Kinases capable of activating Plks in vitro have been previously identified both in mammalian cells and in Xenopus laevis oocytes (SLK an...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2005.10.033
更新日期：2006-02-01 00:00:00
abstract：:LMX1B is a LIM-homeodomain transcription factor essential for development. Putative LMX1B target genes have been identified through mouse gene targeting studies, but their identity as direct LMX1B targets remains hypothetical. We describe here the first molecular characterization of LMX1B target gene regulation. Micro...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2008.10.012
更新日期：2009-01-01 00:00:00
abstract：:We have tested whether life-long caloric restriction (CR) slows or delays the age-related loss of cellular replicative potential that occurs during normal aging in ad libitum (AL) fed mice. Both mean and maximum life spans of the restricted animals (60% of AL intake) were significantly extended 30-40% by CR treatment....
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.1995.1091
更新日期：1995-04-01 00:00:00
