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Taurine transporter is expressed in vascular smooth muscle cells

机译:牛磺酸转运蛋白在血管平滑肌细胞中表达

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The regulation of vascular smooth muscle cells (VSMCs) function by taurine has been a subject of increasing interest and investigation, and taurine is taken up into cells through a specific transporter system, the taurine transporter (TAUT). In the present study, we examined the expression of TAUT in VSMCs and the kinetic parameters of the uptake process of TAUT in VSMCs. RT-PCR and western blot demonstrated that the mRNA and protein of TAUT was expressed in VSMCs in vitro. Immunohistochemistry using antibody for TAUT revealed the expression of this protein in rat thoracic aorta. The maximal [~3H]taurine uptake rate in VSMCs was 37.75 亇 3.13 pmol/min per mg of protein, with a K_m value of 5.42 亇 0.81 muM. Thus, VSMCs are able to express a functional taurine transporter. The regulation and detailed function of taurine and TAUT in VSMCs remain unclear, but our findings suggest a functional role for them in VSMCs metabolism.
机译:牛磺酸对血管平滑肌细胞(VSMC)功能的调节已成为人们越来越感兴趣和研究的课题,牛磺酸通过特定的转运系统牛磺酸转运蛋白(TAUT)被吸收到细胞中。在本研究中,我们检查了TAUT在VSMC中的表达以及TAUT在VSMC中摄取过程的动力学参数。 RT-PCR和western blot证实TAUT的mRNA和蛋白在VSMC中表达。使用针对TAUT的抗体的免疫组织化学揭示了该蛋白在大鼠胸主动脉中的表达。 VSMC中最大的[〜3H]牛磺酸摄取率为每毫克蛋白质37.75±3.13 pmol / min,K_m值为5.42±0.81μM。因此,VSMC能够表达功能性牛磺酸转运蛋白。牛磺酸和TAUT在VSMC中的调节和详细功能尚不清楚,但我们的发现表明它们在VSMC代谢中的功能作用。

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