نتایج جستجو برای: mdr1
تعداد نتایج: 2472 فیلتر نتایج به سال:
Downlo multidrug resistance 1 gene (MDR1) encodes P-glycoprotein (Pgp), a member of the ATP-binding te (ABC) transporter family that confers tumor drug resistance by actively effluxing a number of mor agents. We had previously shown that MDR1 transcription is regulated by epigenetic events such tone acetylation, and had identified the histone acetylase P/CAF and the transcription factor NF-Y as...
یکی از مشکلات مهم در ارتباط با شیمی درمانی سرطان مقاومت به داروهای ضد سرطان است. مقاومت به داروهای ضد سرطان پدیده ای است که سلول های سرطانی زمانی که با یک داروی ضد سرطان مواجه می- شوند، نسبت به بقیه داروهای ضد سرطان با ساختار و عملکرد متفاوت نیز، مقاوم می شوند. مکانیسم های مختلفی برای این پدیده شناخته شده است. یکی از این مکانیسمها بیان بیش از حد abcترانسپورترهاست. عمومی ترینabc ترانسپورتر در غش...
To determine whether the multidrug resistance gene MDR1 could act as a selectable marker in human subjects, we studied engraftment of peripheral blood progenitor cells (PBPCs) transduced with either MDR1 or the bacterial NeoR gene in six breast cancer patients. This study differed from previous MDR1 gene therapy studies in that patients received only PBPCs incubated in retroviral supernatants (...
Overexpression of the multidrug resistance 1 (MDR1) gene is closely associated with the clinical outcome of hematopoietic malignancies, but the alteration of its expression during chemotherapeutic treatment and the precise mechanism underlying MDR1 gene overexpression in solid tumors remains unclear. We determined the expression and degree of methylation at the promoter of the MDR1 gene in blad...
Complete remission is achieved in a high proportion of patients with acute promyelocytic leukemia (APL) after all-trans retinoic acid (RA) treatment, but most patients relapse and develop RA-resistant APL. We have previously reported that both RA-resistant HL-60 (HL-60R) and APL cells express P-glycoprotein and MDR1 transcripts; and these cells differentiate to mature granulocytes after culture...
The development of multidrug resistance 1 (MDR1) can be mediated by a number of different mechanisms but elevated gene expression of MDR1 (P-glycoprotein) has often been a major cause of chemoresistance in many cancer cells. Therefore, the present study aimed to investigate the role of forkhead box-containing protein, O subfamily (FoxO), transcription factors in regulating the MDR1 gene express...
Objective(s): Thymoquinone (TQ) has valuable medical properties like anticancer effects. Development of multidrug resistance (MDR) phenotype is one of the most important factors in failure of cancer chemotherapy. The aim of this study was to evaluate the mode of interaction of TQ and MDR1, a major MDR-related protein in gastric cancer drug resistant EPG85-257RDB cells,...
Retroviral transfer of the human MDR1 gene confers resistance to bisantrene-specific hematotoxicity.
In this work, we demonstrate a protective effect conferred by the human multidrug resistance gene (MDR1) to populations of the murine hematopoietic system against the toxic effects of bisantrene, a novel intercalating cytotoxic agent under investigation as an anticancer agent. In vitro, MDR1-expressing cell lines are highly cross-resistant to bisantrene, and low levels of P-glycoprotein (the MD...
Pain was acknowledged as a member of five vital signs. In clinical practice, anesthetic was used to alleviate pain for cancer patients undergoing surgery. Previous studies showed anesthetic sensitivity varied significantly in different races or ethnics, suggesting that anesthetic dose should be considered for individual analgesia. However, molecular mechanism of anesthetic sensitivity is still ...
In order to reverse P-glycoprotein-mediated drug resistance in a specific manner, we designed two hammerhead ribozymes which can cleave the GUC sequence in codon 179 and 196 of MDR1 (PGY1) mRNA. The ribozymes were directly synthesized using a set of primers, one containing a bacteriophage T7 RNA polymerase promoter. A target MDR1 RNA was created by a reverse transcription polymerase chain react...
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