Evidence that modulation of glucose transporter intrinsic activity is the mechanism involved in the allose‐mediated depression of hexose transport in mammalian cells

Evidence that modulation of glucose transporter intrinsic activity is the mechanism involved in the allose‐mediated depression of hexose transport in mammalian cells
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有证据表明,葡萄糖转运蛋白内在活性的调节是哺乳动物细胞中阿洛糖介导的己糖转运抑制的机制

DOI:
10.1002/jcp.1041610322
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发表时间:
1994
影响因子:
5.6
通讯作者:
R. Germinario
R. Germinario
中科院分区:
生物学2区
文献类型:
--
作者:
S. Pratt;S. Colby;S. Manuel;R. Germinario

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在血清饥饿的V79中国仓鼠肺成纤维细胞中,用D-阿洛糖替代D-葡萄糖导致2-脱氧-D-葡萄糖(2-DG)转运显著减少38 ± 18%(P < 0.05)。类似地,在具有升高的2-DG转运活性的呼吸缺陷突变细胞系(V79-G14)中,D-阿洛糖使2-DG转运减少59 ± 18%(P < 0.05)。[3H]D V79细胞对D-阿洛糖的摄取缓慢,不受细胞松弛素B的抑制,表明D-阿洛糖进入的模式为扩散。使用人红细胞葡萄糖转运蛋白(GT)的兔多克隆抗体进行的Western印迹分析表明,在两种细胞系中,D-葡萄糖与D-阿洛糖处理的细胞中GT含量和GT亚细胞分布无显著差异。δ-抗体,其已显示与GT的外表面表位结合(Harrison等人,1990,生物化学杂志,265:5793 - 5801),未显示与D-葡萄糖的表面结合与D-阿洛糖处理的完整V79细胞的表面结合有任何差异。3 T3成纤维细胞的D-阿洛糖处理导致2-DG转运的类似降低(72%),然而D-阿洛糖对3 T3脂肪细胞中的基础糖转运没有明显影响。这些结果表明,D-阿洛糖通过调节GT的内在活性减少糖转运,并且D-阿洛糖可能以组织特异性方式起作用。© 1994 Wiley利斯公司
In serum starved V79 Chinese hamster lung fibroblast cells, replacement of D‐glucose with D‐allose resulted in a significant 38 ± 18% (P < 0.05) reduction of 2‐deoxy‐D‐glucose (2‐DG) transport. Similarly, in a respiration‐deficient mutant cell line (V79‐G14), which has elevated 2‐DG transport activity, D‐allose reduced 2‐DG transport by 59 ± 18% (P < 0.05). [3H]D‐allose uptake by V79 cells occurred slowly and was not inhibited by cytochalasin B, suggesting diffusion as the mode of D‐allose entry. Western blot analysis using a rabbit polyclonal antibody to the human erythrocyte glucose transporter (GT) demonstrated that, in both cell lines, GT content and GT subcellular distribution were not significantly different in D‐glucose vs. D‐allose‐treated cells. δ‐Antibody, which has been shown to bind to exofacial epitopes of the GT (Harrison et al., 1990, J. Biol. Chem., 265:5793‐‐5801), did not demonstrate any differences in surface binding to D‐glucose vs. D‐allose‐treated intact V79 cells. D‐allose treatment of 3T3 fibroblasts resulted in a similar decrease (72%) of 2‐DG transport, however D‐allose had no apparent effect on basal sugar transport in 3T3 adipocytes. These results suggest that D‐allose reduces sugar transport through a modulation of the intrinsic activity of the GT, and that D‐allose may act in a tissue‐specific manner. © 1994 Wiley‐Liss, Inc.
DOI: 10.1016/s0021-9258(19)38365-6
发表时间: 1990-07
期刊: The Journal of biological chemistry
影响因子: --
作者:
B. Clancy;M. Czech
通讯作者: B. Clancy;M. Czech
DOI: 10.1126/science.3103217
发表时间: 1987-03-20
期刊: SCIENCE
影响因子: 56.9
作者:
FLIER, JS;MUECKLER, MM;LODISH, HF
通讯作者: LODISH, HF
DOI: --
发表时间: 1987
期刊: The Journal of biological chemistry
影响因子: --
作者:
Wang,C
通讯作者: Wang,C
有证据表明,对小鼠 3T3-L1 细胞进行镉处理可调节红系型葡萄糖转运蛋白的内在活性。
DOI: --
发表时间: 1991
期刊: The Journal of biological chemistry
影响因子: --
作者:
Harrison,SA;Buxton,JM;Clancy,BM;Czech,MP
通讯作者: Czech,MP
DOI: 10.1126/science.3029870
发表时间: 1987-03-20
期刊: SCIENCE
影响因子: 56.9
作者:
BIRNBAUM, MJ;HASPEL, HC;ROSEN, OM
通讯作者: ROSEN, OM