主题:【原创】命运裁决已下,也许需要准备销号重练了 -- 饭粥天下
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家园 有一个简单安全的方法可以辅助抑制肿瘤

口服甘露糖,记住不是甘露醇,是甘露糖。

2018年英国癌症研究中心的一支团队带来了一项重磅研究:他们发现口服一种简单的单糖,就可以对肿瘤产生明显的抑制效果。用他们的话说,这有望成为一种简单、安全的抗癌疗法,而且能用于多种癌症类型。

替换论文标题:Mannose impairs tumour growth and enhances chemotherapy

作者:Pablo Sierra Gonzalez, James O’Prey, Simone Cardaci, Valentin J. A. Barthet, Jun-ichi Sakamaki, Florian Beaumatin, Antonia Roseweir, David M. Gay, Gillian Mackay, Gaurav Malviya, Elżbieta Kania, Shona Ritchie, Alice D. Baudot, Barbara Zunino, Agata Mrowinska, Colin Nixon, Darren Ennis, Aoisha Hoyle, David Millan, Iain A. McNeish, Owen J. Sansom, Joanne Edwards, Kevin M. Ryan

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期刊:Nature

发表时间:2018/11/21

数字识别码:10.1038/s41586-018-0729-3

摘要:It is now well established that tumours undergo changes in cellular metabolism1. As this can reveal tumour cell vulnerabilities and because many tumours exhibit enhanced glucose uptake2, we have been interested in how tumour cells respond to different forms of sugar. Here we report that the monosaccharide mannose causes growth retardation in several tumour types in vitro, and enhances cell death in response to major forms of chemotherapy. We then show that these effects also occur in vivo in mice following the oral administration of mannose, without significantly affecting the weight and health of the animals. Mechanistically, mannose is taken up by the same transporter(s) as glucose3|but accumulates as mannose-6-phosphate in cells, and this impairs the further metabolism of glucose in glycolysis, the tricarboxylic acid cycle, the pentose phosphate pathway and glycan synthesis. As a result, the administration of mannose in combination with conventional chemotherapy affects levels of anti-apoptotic proteins of the Bcl-2 family, leading to sensitization to cell death. Finally we show that susceptibility to mannose is dependent on the levels of phosphomannose isomerase (PMI). Cells with low levels of PMI are sensitive to mannose, whereas cells with high levels are resistant, but can be made sensitive by RNA-interference-mediated depletion of the enzyme. In addition, we use tissue microarrays to show that PMI levels also vary greatly between different patients and different tumour types, indicating that PMI levels could be used as a biomarker to direct the successful administration of mannose. We consider that the administration of mannose could be a simple, safe and selective therapy in the treatment of cancer, and could be applicable to multiple tumour types.

甘露糖淘宝有售,可以轻易买到。苹果中有少量天然甘露糖。

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