Abstract:
:We have examined the concept of genomic instability in relation to the metastatic progression of low (F1) and high metastasis (BL6, ML8) clones of the B16 mouse melanoma, by using a mutation assay, and DNA strand break repair and repair fidelity assays. The frequency of induced ouabain resistant colonies between the variant cell lines was consistent with the difference between their metastatic properties. Survival data for X-irradiation and bleomycin were similar among the 3 cell lines. When X-rays or bleomycin were used to induce strand breakage, no difference was detectable in either the rate or extent of DNA repair using the techniques of alkaline unwinding and alkaline elution for total strand breaks, and neutral elution for double strand breaks. DNA repair fidelity was measured using the PMH16 plasmid. A Kpn I restriction site was used to introduce a break within the gpt gene of the plasmid, prior to transfection. We found that approximately 100% and approximately 65% of the highly metastatic ML8 and Bl6 clones, respectively, religated the gene with the required fidelity, compared with only approximately 25% of the low metastasis F1 clones. In summary, the metastatic variants show similar sensitivities to X-irradiation and bleomycin, but a differential response to EMS. This difference is not reflected in any subsequent DNA strand break religation, but the variants do differ in their fidelity of repair. However, although the fidelity of DNA religation is related to metastatic potential, it is not consistent with the mutation frequency data.
journal_name
J Cell Biochemjournal_title
Journal of cellular biochemistryauthors
Usmani BA,Lunec J,Sherbet GVdoi
10.1002/jcb.240510313subject
Has Abstractpub_date
1993-03-01 00:00:00pages
336-44issue
3eissn
0730-2312issn
1097-4644journal_volume
51pub_type
杂志文章abstract::Osteopontin is a multifunctional matricellular protein identified as one of the most upregulated genes in pulmonary fibrosis. Experimental animal models have identified early pro-fibrotic cytokines as essential to the pathogenesis of inflammation-induced pulmonary fibrosis. However, the principal sources of osteoponti...
journal_title:Journal of cellular biochemistry
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journal_title:Journal of cellular biochemistry
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pub_type: 杂志文章,随机对照试验
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abstract::Gastric cancers are a group of highly aggressive malignancies with a huge disease burden worldwide. Gastric infections, such as helicobacter pylori, can induce the occurrence of gastric cancers. However, the role of gastric infection in gastric cancer development is unclear. Programmed death-ligand 1 (PD-L1, B7-H1) is...
journal_title:Journal of cellular biochemistry
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journal_title:Journal of cellular biochemistry
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更新日期:2012-08-01 00:00:00
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journal_title:Journal of cellular biochemistry
pub_type: 杂志文章
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更新日期:2011-10-01 00:00:00
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journal_title:Journal of cellular biochemistry
pub_type: 杂志文章
doi:10.1002/jcb.27432
更新日期:2019-01-16 00:00:00
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journal_title:Journal of cellular biochemistry
pub_type: 杂志文章,评审
doi:
更新日期:1997-01-01 00:00:00
abstract::Pulmonary fibrosis is a lethal inflammatory disease. In this study, we aimed to explore the potential-related circular RNAs (circRNAs) and genes that are associated with pulmonary fibrosis. Pulmonary fibrosis rat models were constructed and the fibrosis deposition was detected using hematoxylin and eosin and Masson st...
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journal_title:Journal of cellular biochemistry
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更新日期:2008-06-01 00:00:00
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journal_title:Journal of cellular biochemistry
pub_type: 杂志文章
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journal_title:Journal of cellular biochemistry
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更新日期:1997-03-01 00:00:00
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更新日期:2012-03-01 00:00:00
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