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- W4254910413 abstract "Folic acid is an essential micronutrient, deficiency of which can lead to disturbance in various metabolic processes of cell. Folate transport across intestine occurs via the involvement of specialized folate transporters viz. proton coupled folate transporter (PCFT) and reduced folate carrier (RFC), which express at the membrane surfaces. The current study was designed to identify the regulatory mechanisms underlying the effects of folate deficiency (FD) on folate transport in human intestinal cell line as well as in rats and to check the reversibility of such effects. Caco-2 cells were grown for five generations in control and FD medium. Following treatment, one subgroup of cells was shifted on folate sufficient medium and grown for three more generations. Similarly, rats were fed an FD diet for 3 and 5 months, and after 3 months of FD treatment, one group of rats were shifted on normal folate-containing diet. Increase in folate transport and expression of folate transporters were observed on FD treatment. However, when cells and rats were shifted to control conditions after treatment, transport and expression of these genes restored to the control level. FD was found to have no impact on promoter methylation of PCFT and RFC; however, messenger RNA stability of transporters was found to be decreased, suggesting some adaptive response. Overall, increased expression of transporters under FD conditions can be attributed to enhanced rate of transcription of folate transporters and also to the increased binding of specificity protein 1 transcription factor to the RFC promoter only." @default.
- W4254910413 created "2022-05-12" @default.
- W4254910413 date "2015-05-01" @default.
- W4254910413 modified "2023-09-25" @default.
- W4254910413 title "EVENTS" @default.
- W4254910413 doi "https://doi.org/10.1016/j.fopow.2015.04.044" @default.
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