Abstract:
:Inhibition of the gap-filling, polymerizing step of excision repair by 1-beta-D-arabinofuranosylcytosine (ara-C) after irradiation with ultraviolet light in human diploid fibroblasts resulted in the formation of persistent DNA strand breaks in G1, G2, and plateau phase cells, but not in S phase cells. Addition of hydroxyurea to ara-C resulted in partial inhibition of repair in S phase cells. These observations can be explained either in terms of changing roles in repair for different DNA polymerases throughout the cell cycle or by the presence of a pool of deoxycytidine nucleotides during S phase equivalent to be an external source of deoxycytidine at 50 microM concentration. A similar concentration dependence on ara-C was observed for inhibition of repair in normal human, xeroderma pigmentosum (XP) variant, and Cockayne's syndrome cells but slightly more in XP variant cells. Exonuclease III and S1 nuclease independently both degraded about 50% of the 3H-thymidine incorporated into repaired regions in the presence of ara-C. Sequential digestion with both enzymes degraded nearly 90% of the repaired regions. These observations can be explained if excision repair proceeds by displacing the damaged strand so that both the 3H-labeled patch and the damaged region are still ligated to high molecular weight DNA and compete for the same complementary strand during in vitro incubation with the nucleases. The amount of 3H-thymidine incorporated in DNA by repair decreased with increasing concentrations of ara-C and hydroxyurea, suggesting that the incomplete patches became shorter under these conditions. Extrapolation of the digestion kinetics with exonuclease III permits an estimate of the normal patch size of about 100 nucleotides, consistent with previous estimates.
journal_name
J Cell Physioljournal_title
Journal of cellular physiologyauthors
Cleaver JEdoi
10.1002/jcp.1041080207subject
Has Abstractpub_date
1981-08-01 00:00:00pages
163-73issue
2eissn
0021-9541issn
1097-4652journal_volume
108pub_type
杂志文章abstract::The expression of a set of cell cycle dependent (CCD) genes (c-fos, c-myc, ornithine decarboxylase (ODC), and thymidine kinase (TK)) was comparatively studied in cultured arterial smooth muscle cells (SMC) during exit from quiescence and exponential proliferation. These genes, which were not expressed in quiescent SMC...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041500309
更新日期:1992-03-01 00:00:00
abstract::Cdk9, a member of the cyclin-dependent kinase family, is the catalytic subunit of P-TEFb, a protein kinase complex that stimulates transcriptional elongation. Cdk9, complexed with its regulatory partner cyclin T1, serves as the cellular mediator of the transactivation function of the HIV Tat protein. There are two kno...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.20224
更新日期:2005-04-01 00:00:00
abstract::It is known that down-regulation of cell surface platelet-derived growth factor (PDGF) receptors accompanies transformation by SV40. In this work human embryonic lung fibroblasts were used as a model system to study the effects of SV 40 on PDGF receptor expression. It is shown that transformation by SV 40 early region...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4652(199601)166:1<12::AID-JCP2>
更新日期:1996-01-01 00:00:00
abstract::The INI1 gene, which encodes a functionally uncharacterized protein component of the hSWI/SNF chromatin remodeling complex, is often mutated or deleted in malignant rhabdoid tumor (MRT). Two isoforms of INI1, that differ by the variable inclusion of nine amino acids, potentially are produced by differential RNA splici...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.10201
更新日期:2003-03-01 00:00:00
abstract::Cell- and matrix-related parameters, which characterize the aging and differentiation process of cartilage in vivo, were measured in cultured chick epiphyseal chondrocytes during maintenance in a suspension culture for 34 days. A gradual decrease in the rates of proliferation and an increase in the size of the cells w...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041440204
更新日期:1990-08-01 00:00:00
abstract::An efficient regulation of fuel metabolism in response to internal and environmental stimuli is a vital task that requires an intact carnitine system. The carnitine system, comprehensive of carnitine, its derivatives, and proteins involved in its transformation and transport, is indispensable for glucose and lipid met...
journal_title:Journal of cellular physiology
pub_type: 杂志文章,评审
doi:10.1002/(SICI)1097-4652(200003)182:3<339::AID-JCP4
更新日期:2000-03-01 00:00:00
abstract::The use of supplements, such as porcine follicular fluid (pFF), fetal bovine serum and human serum albumin are widely used during in vitro maturation (IVM) in different species but these supplements contain undefined components that cause technical difficulties in standardization and influence the efficiency of IVM. K...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.26489
更新日期:2018-09-01 00:00:00
abstract::Nidogen/entactin is a Mr = 150,000 glycoprotein which is present within basement membranes in a noncovalent stable complex with laminin. We have studied the effects of nidogen/entactin complexed or not with laminin on attachment, spreading, and functions of adult rat hepatocytes in primary culture. Freshly isolated he...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041610210
更新日期:1994-11-01 00:00:00
abstract::Recently improved culture conditions for human adult arterial endothelial and smooth muscle cells from a wide variety of donors have been used to study the effects of lipoproteins on proliferation of both cell types in low serum culture medium. Optimal growth of endothelial and smooth muscle cells in an optimal nutrie...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041290212
更新日期:1986-11-01 00:00:00
abstract::Adipose differentiation of 3T3-F442A cells in surface cultures depends on adipogenic factor present in the culture medium. We found that after stimulation with adipogenic serum, 3T3-F442A cell underwent a burst of DNA synthesis before adipose conversion was manifested by an augmented lipogenic enzyme activity. In diff...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041140107
更新日期:1983-01-01 00:00:00
abstract::Methylglyoxal bis-(guanylhydrazone) (mGBG) blocked the stimulation of DNA synthesis in quiescent, density-inhibited BALB/c-3T3 cells treated with platelet-derived growth factor (PDGF) and platelet-poor plasma (PPP). Competence formation produced by a transient exposure to PDGF was not effected by mGBG. In contrast, mG...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041070105
更新日期:1981-04-01 00:00:00
abstract::Male breast cancer (MBC) is an uncommon malignancy. We have previously reported that the expression of the Hippo transducers TAZ/YAP and their target CTGF was associated with inferior survival in MBC patients. Preclinical evidence demonstrated that Axl is a transcriptional target of TAZ/YAP. Thus, we herein assessed A...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.25745
更新日期:2017-08-01 00:00:00
abstract::32D cells are murine myeloid cells that grow indefinitely in Interleukin-3 (IL-3). In these cells, the type 1 insulin-like growth factor (IGF-I) and granulocytic-colony stimulating factor (G-CSF) induce differentiation to granulocytes. 32D cells do not express insulin receptor substrate-1 (IRS-1) or IRS-2, docking pro...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.20613
更新日期:2006-06-01 00:00:00
abstract::We present evidence that extends our earlier preliminary report on the stimulatory effect of saline washes on confluent cells in culture (Lacey et al., '77). That work suggested that an inhibitory substance was being removed by the washes. The present work suggests that the inhibitor is in the 10,000-30,000 MW range, ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041060205
更新日期:1981-02-01 00:00:00
abstract::The beneficial effects of light-emitting diode (LED) irradiation have been reported in various pathologies, including cancer. However, its effect in pancreatic cancer cells remains unclear. Herein, we demonstrated that blue LED of 460 nm regulated pancreatic cancer cell proliferation and apoptosis by suppressing the e...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.29943
更新日期:2021-02-01 00:00:00
abstract::Lung cancer is a leading cause of cancer-related death worldwide. In this study, we used lung adenocarcinoma cells as a model, as lung adenocarcinoma has the highest mortality rate among all lung cancers. For the past few years, medical treatments or lung cancer have been limited because of chemotherapy resistance. Th...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.30133
更新日期:2020-12-07 00:00:00
abstract::A proliferation inducing ligand (APRIL or TALL-2 and TRDL-1) was first discovered as a cytokine over-expressed in many transformed cells and with the capacity to stimulate proliferation. APRIL was shown to bind two different receptors of the TNF receptor superfamily: B cell maturation antigen (BCMA) and transmembrane ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章,评审
doi:10.1002/jcp.21561
更新日期:2009-01-01 00:00:00
abstract::Accumulating evidence demonstrates that PKCι is an oncogene and prognostic marker that is frequently targeted for genetic alteration in many major forms of human cancer. Functional data demonstrate that PKCι is required for the transformed phenotype of lung, pancreatic, ovarian, prostate, colon, and brain cancer cells...
journal_title:Journal of cellular physiology
pub_type: 杂志文章,评审
doi:10.1002/jcp.22463
更新日期:2011-04-01 00:00:00
abstract::Ethanol induces neuronal cell injury and death by dysregulating several signaling events that are controlled, in part, by activation of MAPK/ERK1/2 and/or inactivation of its corresponding phosphatase, PP1. Recently, we have purified a novel protein of 38 kDa in size, p38SJ, from a callus culture of Hypericum perforat...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.21903
更新日期:2009-12-01 00:00:00
abstract::Considering the high rate of osteoclast-related diseases worldwide, research targeting osteoclast formation/function is crucial. In vitro, we demonstrated that chitooligosaccharide (CS) dramatically inhibited osteoclastogenesis as well as osteoclast function dose-dependently. CS suppressed osteoclast-specific genes ex...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.29207
更新日期:2020-03-01 00:00:00
abstract::Focal adhesion kinase (FAK), MAP kinases and the nuclear transcription factor Elk-1 have been reported to be implicated in the same cellular processes, however, their direct or indirect interaction and potential function(s) has not been documented. Here, we explored the association of FAK with Elk-1, the implication o...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.21390
更新日期:2008-07-01 00:00:00
abstract::The polyamine analogue N1,N12bis(ethyl)spermine (BESpm) is a potent inhibitor of cell proliferation and is representative of a class of agents currently in clinical trials. Previous studies have demonstrated that BESpm treatment can produce a decrease in the mRNA levels of the protooncogene c-myc resulting from decrea...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4652(199803)174:3<380::AID-JCP1
更新日期:1998-03-01 00:00:00
abstract::Thrombin is known to evoke numerous inflammatory and proliferative responses in a wide variety of its target cells. Recent studies have demonstrated morphoregulatory and mitogenic effects of thrombin on astroglial cells (astrocytes). The present study deals with thrombin-induced activation of mitogen-activated protein...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041650223
更新日期:1995-11-01 00:00:00
abstract::Males and females differ across a broad spectrum of morphological, physiological, and behavioral characters. In fact, sexually dimorphic traits typically contribute the largest component of phenotypic variance in most taxa that use sex to reproduce. However, we know very little about the mechanisms that maintain these...
journal_title:Journal of cellular physiology
pub_type: 杂志文章,评审
doi:10.1002/jcp.24979
更新日期:2015-10-01 00:00:00
abstract::Autophagy is an evolutionarily conserved intracellular process and is considered one of the main catabolism pathways. In the process of autophagy, cells are digested nonselectively or selectively to recover nutrients and energy, so it is regarded as an antiaging process. In addition to the essential role of autophagy ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章,评审
doi:10.1002/jcp.30111
更新日期:2021-01-16 00:00:00
abstract::Topical intranasal application of the antifungal Amphotericin B (AmphoB) has been shown as an effective medical treatment of chronic rhinosinusitis. Because this antibiotic forms channels in lipid membranes, we considered the possibility that it affects the properties and/or cell surface expression of ion channels/pum...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.20347
更新日期:2005-09-01 00:00:00
abstract::Liver regeneration involves not only hepatocyte replication but progenitor aggregation and scarring. Partial hepatectomy (PH), an established model for liver regeneration, reactivates transforming growth factor-β (TGF-β) signaling. Hepatic stellate cells (HSCs) are primarily responding cells for TGF-β and resident in ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.29169
更新日期:2020-03-01 00:00:00
abstract::Despite the improvements in fracture healing, about 10% of patients undergo abnormal healing. As a tumor suppressor, upregulation of microRNA (miR)-203 has been observed in osteogenic differentiation. Herein, we aimed to explore the functional role of miR-203 in osteoblasts as well as the underlying mechanisms. The ex...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.28387
更新日期:2019-08-01 00:00:00
abstract::Neuropathological disorders are increasingly associated with dysfunctions in neuronal membrane traffic and autophagy, with defects among members of the Rab family of small GTPases implicated. Mutations in the human Xq28 localized gene RAB39B have been associated with X-linked neurodevelopmental defects including macro...
journal_title:Journal of cellular physiology
pub_type: 杂志文章,评审
doi:10.1002/jcp.29962
更新日期:2021-03-01 00:00:00
abstract::Conditions have been established under which the antizyme of ornithine decarboxylase (E.C. 4.1.1.17, L-ornithine carboxy-lyase, ODC) a non-competitive protein inhibitor of ODC, can be detected in cells in response to as little as 10(-7) M putrescine. The maintenance of intracellular antizyme activity depends upon the ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041070206
更新日期:1981-05-01 00:00:00