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Alteration of Zinc Transporter mRNA Expression in Zinc Depleted Condition by TPEN{N,N,Na2,Na2-Tetrakis(2-Pyridylmethyl)Ethylenediamine}: A Cell-Line Based Study.

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Zinc deficiency is rapidly emerging as one of the important concerns in public health nutrition. Early diagnosis of zinc deficiency remains a major challenge. We investigated the expression level of… Click to show full abstract

Zinc deficiency is rapidly emerging as one of the important concerns in public health nutrition. Early diagnosis of zinc deficiency remains a major challenge. We investigated the expression level of different zinc transporters in zinc-deficient condition induced by TPEN, an intracellular zinc chelator in different cell lines like human monocyte (THP-1), skeletal muscle (RD), bone (Saos-2), liver (HepG2), representing different tissues which play key roles in zinc homeostasis. Cells were exposed to TPEN at various concentrations (2, 5, 10 μM) for 2 to12 h and mRNA levels of ZnT1 and MT were analyzed using qPCR. Statistical analysis was carried out using one-way ANOVA. ZnT1 expression was significantly different at 4 h with TPEN concentration of 2 μM and 5 μM as compared to untreated controls in THP-1, whereas in HepG2, significant differences were observed at 5 μM and 10 μM TPEN concentration after 6 h. In RD, significant differences were observed at 4 h in presence of 2 μM TPEN and in Saos2 expression was significantly different at 2 h with 2 μM, 5 μM, and 10 μM TPEN as compared to respective controls. Expression of MT in THP1 was significantly different at 2 h and 12 h control in presence of 2 μM, 5 μM and 10 μM TPEN, whereas in HepG2 significant differences were found at 2 μM, 5 μM, and 10 μM TPEN after 6 h of treatment. RD MT expression was significantly different in 10 μM for 12 h. Similarly, Saos2 expression was significantly different in the presence of 5 μM and 10 μM TPEN. Conclusions: This study may help in understanding the molecular cross talks among different zinc tissue storage depots during zinc deficiency and identification of early biomarkers for zinc deficiency.

Keywords: expression; na2; expression significantly; zinc; zinc deficiency; significantly different

Journal Title: Journal of nutritional science and vitaminology
Year Published: 2020

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