Abstract:
:HL-60 cells isolated for resistance to vincristine are multidrug resistant and defective in the cellular accumulation of drug. Further studies demonstrate that these cells are also highly defective in 12-O-tetradecanoylphorbol-13-acetate (TPA) induced differentiation to macrophages. Analysis of this system demonstrates that certain protooncogenes which may contribute to differentiation are expressed at similar levels in sensitive and resistant cells. Thus, treatment of cells with TPA results in a reduction in the levels of c-myb and c-myc mRNA, while the expression of c-fos, c-jun, and junB is greatly enhanced. Immunoprecipitation experiments also demonstrate a TPA induced increase in the c-jun protein in both sensitive and resistant cells. Gel mobility shift assays show that TPA induces AP-1 formation in sensitive cells, whereas in parallel experiments with the HL-60/Vinc isolate, AP-1 is essentially absent. It has been found, however, that in resistant cells which have reverted to drug sensitivity, the levels of TPA inducible AP-1 is essentially identical to that of sensitive cells. Revertant and sensitive cells differentiate at similar levels in the presence of TPA. These studies therefore demonstrate that HL-60/Vinc cells are defective in the TPA induction of a functional AP-1 complex and that this may account for the inability of these cells to differentiate to macrophages. The molecular basis of the finding that AP-1 is not formed in resistant cells remains to be determined.
journal_name
Oncol Resjournal_title
Oncology researchauthors
Ma L,Krishnamachary N,Perbal B,Center MSsubject
Has Abstractpub_date
1992-01-01 00:00:00pages
291-8issue
7eissn
0965-0407issn
1555-3906journal_volume
4pub_type
杂志文章abstract::Gastric cancer (GC) is the most common epithelial malignancy worldwide. Basic transcription factor 3 (BTF3) plays a crucial role in the regulation of various biological processes. We designed experiments to investigate the molecular mechanism underlying the role of BTF3 in GC cell proliferation and metastasis. We conf...
journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504017X14886494526344
更新日期:2017-11-02 00:00:00
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journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504009789745665
更新日期:2009-01-01 00:00:00
abstract::Laryngeal cancer, one of the most common head and neck malignancies, is an aggressive neoplasm. Increasing evidence has demonstrated that microRNAs (miRNAs) exert important roles in oncogenesis and progression of diverse types of human cancers. miR-632, a tumor-related miRNA, has been reported to be dysregulated and i...
journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504018X15213142076069
更新日期:2020-02-07 00:00:00
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journal_title:Oncology research
pub_type: 杂志文章,评审
doi:
更新日期:1997-01-01 00:00:00
abstract::This commentary proposes the working hypothesis that transforming growth factor-beta (TGF-beta) can play two different and opposite roles with respect to the process of malignant progression. During the earliest stages of carcinogenesis, TGF-beta can act as potent tumor suppressor and may mediate the actions of chemop...
journal_title:Oncology research
pub_type: 杂志文章,评审
doi:
更新日期:1997-01-01 00:00:00
abstract::Pyroptosis is a type of proinflammatory programmed cell death mediated by caspase 1 activity and occurs in several types of eukaryotic tumor cells, including gliomas. MicroRNAs (miRNAs), small endogenous noncoding RNAs, have been demonstrated to be advantageous in glioma therapy. However, the question of whether miRNA...
journal_title:Oncology research
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doi:10.3727/096504016X14813859905646
更新日期:2017-07-05 00:00:00
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journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504017X14957939026111
更新日期:2018-04-27 00:00:00
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journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504017X14926854178616
更新日期:2017-11-02 00:00:00
abstract::The anticancer drug Adriamycin is widely used in cancer chemotherapy and is classified as a topoisomerase II inhibitor. However, in the presence of formaldehyde, Adriamycin also forms high levels of DNA adducts. In this study, a new series of butyric acid and formaldehyde-releasing drugs related to AN9 (pivaloyloxymet...
journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504005776382305
更新日期:2005-01-01 00:00:00
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journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/000000003108748595
更新日期:2003-01-01 00:00:00
abstract::Glioma is a common type of malignant brain tumor characterized by aggressive metastasis capability. Recent evidence has suggested that noncoding RNAs, including microRNAs, have important functions in the pathophysiology of glioma development. In this study, we investigated the biological function of miR-422a in human ...
journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504016X14732772150389
更新日期:2017-01-26 00:00:00
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journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504012x13342463747450
更新日期:2011-01-01 00:00:00
abstract::Spinal osteosarcoma (OS) is a malignant tumor that has a poor outcome. MicroRNA-520b (miR-520b) acts as a cancer suppressor in various types of cancer. Because of the limited amount of literature on OS, we aimed to identify the role of miR-520b in OS. The miR-520b level in clinical spinal OS tissues and adjacent nontu...
journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504017X14873430389189
更新日期:2017-09-21 00:00:00
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journal_title:Oncology research
pub_type: 杂志文章
doi:
更新日期:1996-01-01 00:00:00
abstract::To elucidate the proteins related to the development and progress of esophageal squamous cell carcinoma (ESCC), we performed gene expression profile analysis of 14 ESCC tissues. We identified 182 genes that were commonly upregulated (p < 10(-5)) and 54 genes that were downregulated in ESCC tissues (p < 10(-6)). In ord...
journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504009790217407
更新日期:2009-01-01 00:00:00
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journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504019X15753718797664
更新日期:2020-05-29 00:00:00
abstract::The present study aimed to investigate the effect of miR-186 on proliferation, migration, invasion, and epithelialmesenchymal transition (EMT) of hepatocellular carcinoma (HCC). In this work, miR-186 was downregulated in HCC tissues and cells, and low miR-186 level helped predict the occurrence of vascular invasion an...
journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504020X15954139263808
更新日期:2020-12-10 00:00:00
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journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504015X14386062091398
更新日期:2014-01-01 00:00:00
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journal_title:Oncology research
pub_type: 杂志文章
doi:
更新日期:1993-01-01 00:00:00
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journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504016X14747335734344
更新日期:2017-03-13 00:00:00
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journal_title:Oncology research
pub_type: 杂志文章
doi:
更新日期:1995-01-01 00:00:00
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journal_title:Oncology research
pub_type: 杂志文章,评审
doi:10.3727/096504008786111383
更新日期:2008-01-01 00:00:00
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journal_title:Oncology research
pub_type: 杂志文章
doi:
更新日期:1994-01-01 00:00:00
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journal_title:Oncology research
pub_type: 杂志文章
doi:
更新日期:1997-01-01 00:00:00
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journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504014X13907540404833
更新日期:2014-01-01 00:00:00
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journal_title:Oncology research
pub_type: 杂志文章
doi:
更新日期:1998-01-01 00:00:00
abstract::Baicalein, a flavonoid derived from the root of Scutellaria baicalensis, has been reported to possess multiple pharmacological activities, such as anticancer and anti-inflammatory properties. This study investigated the effect of baicalein in cervical cancer cells. Cell growth curve and MTT assay were performed and re...
journal_title:Oncology research
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doi:10.3727/096504017X15031557924141
更新日期:2018-05-07 00:00:00
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journal_title:Oncology research
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更新日期:2007-01-01 00:00:00
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journal_title:Oncology research
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doi:10.3727/096504016X14732772150181
更新日期:2017-01-02 00:00:00
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journal_title:Oncology research
pub_type: 杂志文章
doi:
更新日期:1999-01-01 00:00:00