Abstract:
:Multidrug resistance (MDR) is a major clinical obstacle in the treatment of several cancers including hematological malignancies and solid tumors. The ATP-binding cassette transporter B1 (ABCB1) gene and its product, P-glycoprotein (P-gp), is one molecule that is involved in drug resistance. Here we report on the effect of decitabine (5-aza-2'-deoxycytidine), an inhibitor of DNA methyltransferase, on ABCB1 mRNA and P-gp expressions in drug-resistant MOLT4 and Jurkat cells. We found that decitabine treatment reduced ABCB1 mRNA and P-gp expressions in MOLT4/daunorubicin-resistant and Jurkat/doxorubicin-resistant cells. The decrease in the expression of ABCB1 mRNA and P-gp was accompanied by increased sensitivity to anticancer drugs in both drug-resistant cell lines. Our data suggest that DNA methylation is one of the mechanisms underlying ABCB1/P-gp overexpression in drug-resistant hematopoietic cell lines. The modulation of ABCB1/P-gp by DNA methylation inhibitors may be an effective strategy to overcome P-gp-related drug resistance.
journal_name
Anticancer Resjournal_title
Anticancer researchauthors
Onda K,Suzuki R,Tanaka S,Oga H,Oka K,Hirano Tsubject
Has Abstractpub_date
2012-10-01 00:00:00pages
4439-44issue
10eissn
0250-7005issn
1791-7530pii
32/10/4439journal_volume
32pub_type
杂志文章abstract:BACKGROUND:Zoledronate (Zol), an anti-osteoclastic and anticancer drug, is used to control bone metastasis in several cancer types, including non-small cell lung cancer (NSCLC). However, the mechanisms behind Zol resistance in NSCLC are unclear. MATERIALS AND METHODS:Zol-resistant cell lines were developed by repeated...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2013-12-01 00:00:00
abstract:BACKGROUND:The tumour suppressor gene 'mutated in colorectal cancer' (MCC) is silenced through promoter methylation in colorectal cancer and has been implicated as a regulator of the nuclear factor kappa B (NFκB) pathway. Therefore, we aimed to determine whether MCC modulates NFκB activation in colorectal cancer. MATE...
journal_title:Anticancer research
pub_type: 杂志文章
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abstract:BACKGROUND/AIM:The aim of this study was to evaluate the impact of laparoscopic gastrectomy (LG) for gastric cancer on long-term survival in patients with postoperative infectious complications (PIC). PATIENTS AND METHODS:A total of 608 patients who underwent gastrectomy were classified into two groups based on the su...
journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.14740
更新日期:2020-12-01 00:00:00
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journal_title:Anticancer research
pub_type: 杂志文章
doi:
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journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2010-03-01 00:00:00
abstract:BACKGROUND:We have previously shown that human metallopanstimulin (MPS-1) is a 9.4-kDa multifunctional ribosomal S27/nuclear "zinc finger" protein which is expressed in a wide variety of actively proliferating cells and tumor tissues. Furthermore, we have shown that detection of MPS-N immunoreactive material in sera co...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1997-05-01 00:00:00
abstract:BACKGROUND:The efficacy and toxicity of adjuvant chemo-immunotherapy using dendritic cells and activated killer cells are not clear in post-surgical primary lung cancer patients. PATIENTS AND METHODS:Pathologically diagnosed N2 lung cancer patients were selected for postsurgical adjuvant chemo-immunotherapy. The activ...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2008-03-01 00:00:00
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journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.12255
更新日期:2018-01-01 00:00:00
abstract::Prophylactic cranial irradiation (PCI) is still an open question despite the fact that ten randomized trials have been published in the past, addressing its impact on overall survival, disease-free survival and incidence of brain recurrences. The majority of these trials allow us to conclude that PCI is only useful in...
journal_title:Anticancer research
pub_type: 杂志文章,评审
doi:
更新日期:1994-01-01 00:00:00
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journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1999-01-01 00:00:00
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journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2005-05-01 00:00:00
abstract:BACKGROUND:Vinflunine is a novel Vinca alkaloid currently undergoing Phase II clinical trials, which have previously demonstrated anti-vascular effects in a transplantable murine colon adenocarcinoma model. Previous studies with compounds showing similar effects in combination with standard anti-cancer agents have demo...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2003-11-01 00:00:00
abstract::Tumor angiogenesis seems to be an important factor in determining therapeutic effectiveness and patient prognosis. An abundance of data on tumor angiogenesis is available and it clearly shows that most human solid tumors are heterogeneously vascularized and oxygenated and contain hypoxic regions. Such regions and area...
journal_title:Anticancer research
pub_type: 杂志文章,评审
doi:
更新日期:2001-11-01 00:00:00
abstract::One of the major obstacles in the treatment of hepatocellular carcinoma (HCC) is the intrinsic/acquired resistance to cisplatin-based chemotherapy. Copper-transporting P-type adenosine triphosphate (ATP7B) has been reported to be associated with cisplatin resistance in vitro. However, the expression of ATP7B has not p...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2004-03-01 00:00:00
abstract::A human ovarian mesodermal mixed heterologous carcinoma, with a high content of cellular retinol-binding protein (CRBP), was used to study the effects of retinoid and hormonal treatment on tumour CRBP content, tumour growth rate, differentiation and turnover of CRBP. Tumour growth in general was accompanied by an incr...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1989-01-01 00:00:00
abstract::Medullary thyroid carcinoma (MTC), a rare calcitonin-producing tumor, is derived from parafollicular C-cells of the thyroid and is characterized by constitutive Bcl-2 overexpression. The tumor is relatively insensitive to radiation therapy as well as conventional chemotherapy. To date, the only curative treatment is t...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2009-11-01 00:00:00
abstract:BACKGROUND:Tumor cells expressing excessive anionic-charged sialic acid can be potentially targeted by cationic polymers which may inhibit tumor growth. In the present study, three new families of cationic polymers were synthesized to assess their effects on prostate cancer cells. MATERIALS AND METHODS:Cationic polyme...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2014-08-01 00:00:00
abstract::The usefulness of prostate specific antigen (PSA) in screening for prostatic carcinoma was studied in 262 inpatients of the department of internal medicine. All patients underwent a rectal digital examination and determination of PSA by the Tandem-E method (Hybritech). The plan was to perform biopsies if there were su...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1997-07-01 00:00:00
abstract:BACKGROUND/AIM:Only 30-50% of patients with sentinel lymph node (SLN) metastases present with further axillary lymph node metastases. Therefore, up to 70% of patients with positive SLN are overtreated by axillary dissection (AD) and may suffer from complications such as sensory disturbances or lymphedema. According to ...
journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.12694
更新日期:2018-07-01 00:00:00
abstract:UNLABELLED:Reduced serum-zinc concentrations are well known as typical laboratory characteristics in advanced head and neck cancer. Our aim was to follow the development of this phenomenon during the disease. PATIENTS AND METHODS:A total of 21 patients were included in this pilot-study (1 female, 20 male). The median ...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2007-07-01 00:00:00
abstract:AIM:The aim of this study was to evaluate the detection rate of bone metastases and the added value of 11C-acetate (ACE) positron-emission tomography/computed tomography (PET/CT) compared to bone scintigraphy (BS) in high-risk prostate cancer (PC). MATERIALS AND METHODS:A total of 66 untreated patients with high-risk ...
journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.11246
更新日期:2016-12-01 00:00:00
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journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.11656
更新日期:2017-06-01 00:00:00
abstract::P53 mutation, through defects in repairing DNA damages, is associated with genomic instability. In 24 adult patients with relapsed acute lymphoblastic leukemia (ALL), the status of the p53 gene at different stages was serially followed by cytogenetic and polymerase-chain reaction/single strand conformation polymorphis...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1998-03-01 00:00:00
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journal_title:Anticancer research
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doi:
更新日期:2002-05-01 00:00:00
abstract:BACKGROUND/AIM:To validate the melanoma nomogram and improve its function in prediction of nodal dissemination by incorporating a molecular marker in the model. Microphthalmia transcription factor (MITF) is an important regulator of melanocyte homeostasis and differentiation. We have shown that the grade of MITF expres...
journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.11266
更新日期:2016-12-01 00:00:00
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journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.14059
更新日期:2020-02-01 00:00:00
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journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2013-09-01 00:00:00
abstract::Alterations in histone acetylation status appear to play a central role in the regulation of neoplasia, tumor suppression, cell cycle control, hormone responsiveness and senescence. These alterations of chromatin control gene transcription. The histone acetylation status is regulated by the equilibrium of histone acet...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2000-03-01 00:00:00
abstract:BACKGROUND:Matrix metalloproteinases (MMPs) and tissue inhibitors of metalloproteinases (TIMPs) play a key role in extracellular matrix (ECM) turnover and remodeling. Changes in their expression levels have been observed in various tumor types. However, their clinical significance and prognostic importance in the progr...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2008-09-01 00:00:00
abstract:BACKGROUND:Pure or metaplastic squamous cell carcinoma (SCC) of the breast is a rare entity with an unclear pathogeny and aggressive clinical behaviour. An attempt was made to characterize its differential immunohistochemical and biological profile. PATIENTS AND METHODS:Twenty-seven cases of SCC (pure or not) of the b...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2007-01-01 00:00:00