Reduced folate carrier protein expression in osteosarcoma

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منابع مشابه

Sequence alterations in the reduced folate carrier are observed in osteosarcoma tumor samples.

High-dose methotrexate is a standard component of therapy for high-grade osteosarcoma. Its effectiveness may be limited by intrinsic and acquired resistance. Decreased reduced folate carrier (RFC) expression has been shown in approximately half of osteosarcomas at diagnosis. Mutations and polymorphisms in the RFC gene have been reported in various cell lines. The purpose of this study was to in...

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Role of reduced folate carrier in intestinal folate uptake.

Studies from our laboratory and others have characterized different aspects of the intestinal folate uptake process and have shown that the reduced folate carrier (RFC) is expressed in the gut and plays a role in the uptake process. Little, however, is known about the actual contribution of the RFC system toward total folate uptake by the enterocytes. Addressing this issue in RFC knockout mice ...

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Folate receptor and human reduced folate carrier expression in HepG2 cell line exposed to fumonisin B1 and folate deficiency.

Fumonisin B1 (FB1) induces apoptosis and decreases the cellular uptake of 5-methyltetrahydrofolate. Two folate transporters (folate receptor, FR, and Reduced Folate Carrier, hRFC1) are involved in the cell uptake of folate. We aimed to study whether FB1 modifies the expression of the FR and the hRFC1 and whether its apoptotic effect is influenced by folate. Incubation of HepG2 cells with FB1 in...

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Effect of arsenic on neural tube in mouse embryo and relation to reduced folate carrier (RFC-1)

Arsenic is an important environmental toxicant which is usually found in drinking water in inorganic form. The hypothesis tested in this investigation is; arsenic exposure causes neural tube defects (NTDs) andthese defects of the central nervous system are more likely related to folate deficiency during fetal life. In this study, sodium arsenate was administered via intraperitoneal route at a r...

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Analysis of dihydrofolate reductase and reduced folate carrier gene status in relation to methotrexate resistance in osteosarcoma cells.

BACKGROUND To evaluate the impact of dihydrofolate reductase (DHFR) and reduced folate carrier (RFC) genes on methotrexate (MTX) resistance in osteosarcoma cells in relation to retinoblastoma (RB1) gene status. MATERIALS AND METHODS A series of human osteosarcoma cell lines-either sensitive or resistant to MTX-and 16 osteosarcoma tumour samples were used in this study. RESULTS In U-2OS MTX-...

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ژورنال

عنوان ژورنال: Cancer

سال: 2003

ISSN: 0008-543X,1097-0142

DOI: 10.1002/cncr.11741