Showing posts with label Cancer. Show all posts
Showing posts with label Cancer. Show all posts

07 July, 2011

Cancer: Low carb, low tumour growth

最新研究发现,低碳水化合物高蛋白的饮食有助于减缓肿瘤的生长(鼠类试验)。

News from nature

Cancer: Low carb, low tumour growth

Nature 475, 7354 (2011). doi:10.1038/475009a

A low-carbohydrate, high-protein diet slowed tumour growth in mice compared with a typical high-carbohydrate Western-style diet.Gerald Krystal at the BC Cancer Research Centre in Vancouver, Canada, and his colleagues compared the growth of both human and mouse tumours in mice fed diets comprising 8%,


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原文:Cancer Res. 71, 4484–4493 (2011)

09 June, 2011

FW: Cancer: How cancer cells survive stress

癌细胞还真是聪明,可以自己调节代谢机制,应对苛刻的生存条件。这给治疗带来了极大的困难。不过这种机制要是保留给正常细胞,那多好。

 

Feed: Nature - Issue - nature.com science feeds
Posted on: Wednesday, 8 June 2011 10:00 AM
Author: Nature Publishing Group
Subject: Cancer: How cancer cells survive stress

 

Cancer: How cancer cells survive stress

Nature 474, 7350 (2011). doi:10.1038/474131e

Highly read on genesdev.cshlp.org 27—31 MayTumours subject to stressors such as starvation survive by altering their metabolic activities — and they do so by boosting the expression of an enzyme that normally functions in the brain.Tak Mak at the University of Toronto


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01 April, 2011

【转载】癌症--做了长生不老梦的细胞

转自:http://www.douban.com/note/141768338/


癌症--做了长生不老梦的细胞

2011-03-25 11:21:39
           当年上大学时第一次从课堂上听说了“原癌基因 (oncogene)”这个名词。当时就感觉不妙。本以为癌症就跟什么天花疟疾之类的由外在邪物所致,结果闹了半天居然是体内自己蹦出来的,还带着遗传?那这从自身内部攻克堡垒的还怎么治啊?

 继续深造下去,得到的信息是细胞内不但有原癌基因,还有“抑癌基因(tumor suppressor)”。正常细胞从生到死,遵循着严格的细胞分裂周期,分裂个几十代后就会自动进入死亡程序。一众基因控制着这些关键步骤,一旦发现情况不对,便会启动细胞凋亡程序,阻止异常分裂增生。普通细胞要成为癌细胞,只有一个基因突变是不够的,往往是有多个突变,彻底摧毁细胞周期调控程序,进入不受约束不受限制的恶性增生状态—癌症就此诞生。换句话说,癌细胞就是一些做了“长生不老梦”的细胞。