如果基因突变使得抑癌基因(如p53)功能过强,会产生什么现象呢?
:) :D :P 嘻嘻,细胞立刻自杀 是不是片面了呢 要不就长成侏儒 [b]回复 [url=forum.php?mod=redirect&goto=findpost&pid=839417&ptid=66721][color=Olive]FreeCell[/color] 的帖子[/url][/b]这回复配上头像的笑脸堪称一绝啊:lol 都是想当然。有这样的Knockin 鼠,没什么表型。但与产生肿瘤的ras 转基因鼠交配,在P53功能增强的遗传背景下,肿瘤发生更早,长的更快(对比:p53野生型和p53敲除背景)。(J Pathol, 2011)
谁说p53 是抑癌基因?
专家评论(以色列的p53研究权威):p53突变(你别管怎么变)导致肿瘤,没错!
P53突变是一种 gain of function 会获得新的功能 促进肿瘤发生 另外P53敲除的小鼠 衰老减速 寿命减少 The first transgenic mouse for p53 was published in 1989 by Lavigeur et al. This mouse overexpress a mutant p53 transgene (A135V). This mouse is prone to various types of cancer. Recently, it has been shown that this mouse displays early ageing-associated phenotypes. [quote][size=2][color=#999999]monk125 发表于 2013-4-9 12:49[/color] [url=forum.php?mod=redirect&goto=findpost&pid=839786&ptid=66721][img]static/image/common/back.gif[/img][/url][/size]
The first transgenic mouse for p53 was published in 1989 by Lavigeur et al. This mouse overexpress a ...[/quote]
请提供原文或原文标题,想了解一些具体问题。谢谢 [quote][size=2][color=#999999]monk125 发表于 2013-4-9 12:17[/color] [url=forum.php?mod=redirect&goto=findpost&pid=839770&ptid=66721][img]static/image/common/back.gif[/img][/url][/size]
P53突变是一种 gain of function 会获得新的功能 促进肿瘤发生 另外P53敲除的小鼠 衰老减速 寿命减少[/quote]
"gain of function" 是功能增强,不是 “gain of new function".
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