Tobacco Helps Cancer Cells Evade Destruction
烟草帮助癌细胞逃脱毁灭 New research suggests that tobacco not only promotes cancer development， but also helps early cancer cells evade detection by the immune system， which might otherwise mop up harmful cells before they reproduce and spread. 新的研究表明，烟草不仅会促进癌症的发展，而且还能帮助早期的癌细胞逃避人的免疫系统的检测，而这种检测有可能在癌细胞繁殖和扩散之前就将其消灭。 Dr. Jane A. McCutcheon and her colleagues at New York University in New York City discovered that cells exposed to tobacco have fewer substances on their surfaces used to signal whether or not the cell is dangerous and should be destroyed by the immune system. As such， McCutcheon suggested in an interview with Reuters Health， cells with fewer of these warning devices， if they become cancerous， would be more likely to evade detection by the immune system， grow and spread throughout the body. 纽约市纽约大学的Jane A. McCutcheon博士和她的同事发现，细胞接触烟草后，其表面的一些物质减少了，而正是这些物质可发出细胞是否有危险以及免疫系统是否应该将其消灭的讯号。鉴于此，McCutcheon在接受路透社健康通讯的一次采访中说，由于细胞报警能力的降低，一旦细胞发生癌变，它们就很有可能逃避人体免疫系统的监测而繁殖起来，并扩散到全身。 |
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