Abstract:
:A major problem in cancer treatment is the development of resistance to chemotherapeutic agents, multidrug resistance (MDR), associated with increased activity of transmembrane drug transporter proteins which impair cytotoxic treatment by rapidly removing the drugs from the targeted cells. Previously, it has been shown that heparin treatment of cancer patients undergoing chemotherapy increases survival. In order to determine whether heparin is capable reducing MDR and increasing the potency of chemotherapeutic drugs, the cytoxicity of a number of agents toward four cancer cell lines (a human enriched breast cancer stem cell line, two human breast cancer cell lines, MCF-7 and MDA-MB-231, and a human lung cancer cell line A549) was tested in the presence or absence of heparin. Results demonstrated that heparin increased the cytotoxicity of a range of chemotherapeutic agents. This effect was associated with the ability of heparin to bind to several of the drug transport proteins of the ABC and non ABC transporter systems. Among the ABC system, heparin treatment caused significant inhibition of the ATPase activity of ABCG2 and ABCC1, and of the efflux function observed as enhanced intracellular accumulation of specific substrates. Doxorubicin cytoxicity, which was enhanced by heparin treatment of MCF-7 cells, was found to be under the control of one of the major non-ABC transporter proteins, lung resistance protein (LRP). LRP was also shown to be a heparin-binding protein. These findings indicate that heparin has a potential role in the clinic as a drug transporter modulator to reduce multidrug resistance in cancer patients.
journal_name
Cancer Biol Therjournal_title
Cancer biology & therapyauthors
Chen Y,Scully M,Petralia G,Kakkar Adoi
10.4161/cbt.27148subject
Has Abstractpub_date
2014-01-01 00:00:00pages
135-45issue
1eissn
1538-4047issn
1555-8576pii
27148journal_volume
15pub_type
杂志文章abstract::Activation of MAP kinases is involved in various cellular processes, including immunoregulation, inflammation, cell growth, cell differentiation, and cell death. To investigate the role of p38 MAP kinase activation in the signaling pathway of TRAIL-mediated apoptosis, we compared TRAIL-mediated MAP kinase activation i...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.3.3.696
更新日期:2004-03-01 00:00:00
abstract::Antivascular therapy provides a promising method for anticancer therapy. But targeting to gastric cancer vessels is nonselective due in part to the lack of specific cell-surface receptors identified on target vascular cells. Herein we used in vivo screening of phage displayed peptide library to identify some peptides ...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.3.12.1223
更新日期:2004-12-01 00:00:00
abstract::Genes playing a role in carcinogenesis have often been identified through analysis of recurrent chromosomal rearrangements. Although such rearrangements are well known in leukemias, lymphomas, and sarcomas, they have not been well characterized in carcinomas. In the October 28, 2005 issue of Science, a study by Tomlin...
journal_title:Cancer biology & therapy
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journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.12.2.15722
更新日期:2011-07-15 00:00:00
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journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.1080/15384047.2018.1523094
更新日期:2019-01-01 00:00:00
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journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.8.22.10446
更新日期:2009-11-01 00:00:00
abstract:PURPOSE:Induction chemotherapy has shown to provide consistent benefit for local control in primary treatment of advanced oropharyngeal cancer. The beneficial role of chemoradiation following induction chemotherapy over concurrent chemoradiation has not been evaluated. Present study evaluates the same prospectively. R...
journal_title:Cancer biology & therapy
pub_type: 杂志文章,随机对照试验
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更新日期:2009-02-01 00:00:00
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journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.12.4.17174
更新日期:2011-08-15 00:00:00
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journal_title:Cancer biology & therapy
pub_type: 杂志文章
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更新日期:2008-02-01 00:00:00
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journal_title:Cancer biology & therapy
pub_type: 评论,杂志文章
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更新日期:2017-08-03 00:00:00
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journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.6.9.4546
更新日期:2007-09-01 00:00:00
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journal_title:Cancer biology & therapy
pub_type: 杂志文章,评审
doi:10.4161/cbt.10.5.13022
更新日期:2010-09-01 00:00:00
abstract::The present studies have examined approaches to suppress MCL-1 function in breast cancer cells, as a means to promote tumor cell death. Treatment of breast cancer cells with CDK inhibitors (flavopiridol; roscovitine) enhanced the lethality of the ERBB1 inhibitor lapatinib in a synergistic fashion. CDK inhibitors inter...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.10.9.13273
更新日期:2010-11-01 00:00:00
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journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.1080/15384047.2016.1195048
更新日期:2016-08-02 00:00:00
abstract::Numerous tyrosine kinase inhibitors (TKIs) targeting c-Met are currently in clinical trials for several cancers. Their efficacy is limited due to the development of resistance. The present study aims to elucidate this mechanism of c-Met TKI resistance by investigating key mTOR and Wnt signaling proteins in melanoma ce...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.29451
更新日期:2014-09-01 00:00:00
abstract::Although daunomycin and adriamycin are considered effective antitumor drugs and have been used in the clinic for over 40 years, their mechanism of action is still a matter of debate. We investigated the influence of daunomycin on interaction between linker or core histones and DNA in live HeLa cells in vitro, using im...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.25328
更新日期:2013-09-01 00:00:00
abstract::KLF4 is induced upon growth-arrest in vitro and during epithelial maturation in vivo, and is essential for proper cell fate specification of post-mitotic cells. In spite of a normal role in post-mitotic cells, expression is upregulated and constitutive in certain tumor types. KLF4 functions as an oncogene in vitro, an...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.4.12.2355
更新日期:2005-12-01 00:00:00
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journal_title:Cancer biology & therapy
pub_type: 杂志文章,评审
doi:10.4161/cbt.5.10.3296
更新日期:2006-10-01 00:00:00
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journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.9.3.11143
更新日期:2010-02-01 00:00:00
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journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.7.8.6264
更新日期:2008-08-01 00:00:00
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journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.4.12.2183
更新日期:2005-12-01 00:00:00
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journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.6.3.3673
更新日期:2007-03-01 00:00:00
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journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.5.7.2971
更新日期:2006-07-01 00:00:00
abstract::We have previously identified tumor susceptibility gene101 (TSG101), overexpressed in vincristine-resistant human gastric adenocarcinoma cell line SGC7901/VCR using a modified subtractive hybridization method and Western blot. In the present study, we constructed two siRNA eukaryotic expression vectors of TSG101 and t...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.3.6.847
更新日期:2004-06-01 00:00:00
abstract::Nimotuzumab (h-R3) is a humanized anti-epidermal growth factor receptor monoclonal antibody (mAb) registered for treating head and neck tumours. The present study was designed to evaluate the systemic and skin toxicity of chronic intravenous administration of the h-R3 in a relevant species demonstrated by comparing th...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.6.9.4539
更新日期:2007-09-01 00:00:00
abstract::Methyl-CpG binding domain protein 1 (MBD1) is a transcriptional regulator that binds methylated CpG islands of tumor suppressor genes and represses their transcription. In a former study, we found high expression of MBD1 in pancreatic cancer cell lines and tissues which may play an important role in the development of...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.8.7.7790
更新日期:2009-04-01 00:00:00
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journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.3.12.1232
更新日期:2004-12-01 00:00:00
abstract::Sunitinib, a multi-targeted tyrosine kinase inhibitor, is frequently incorporated into the management of papillary thyroid carcinoma refractory to standard therapies. Although clinical trials are in progress, the mechanism of action in papillary thyroid carcinomas is not clear, especially regarding the effect on BRAF ...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.12.5.16303
更新日期:2011-09-01 00:00:00
abstract::Epigenetics are defined, in broad-terms, as alterations in gene expression without changes in DNA sequence. While histone modifications and DNA methylation are two classical means to regulate gene expression, miRNA has also recently been documented to govern gene expression in normal as well as cancer cells. In this r...
journal_title:Cancer biology & therapy
pub_type: 杂志文章,评审
doi:10.4161/cbt.7.9.6992
更新日期:2008-09-01 00:00:00
abstract::Phorbol 12-myristate 13-acetate (PMA) modulates cell proliferation and survival by activating several intracellular signaling pathways. Protein kinase C (PKC) plays a key role in PMA-induced growth arrest of non-small cell lung cancer (NSCLC) cells. Kruppel-like transcription factor 6 (KLF6), which is associated with ...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.8.9.8186
更新日期:2009-05-01 00:00:00