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本帖最后由 张麻子 于 2014-10-25 20:53 编辑
haohao 发表于 2014-10-25 20:39 ![]()
我百度了啊。但你对的回复并没有针对我直接问题进行的啊。我在重复一遍我的问题。
第一,你所陈列的文 ...
1 既然挺转和反转A的有来有去,肯定不存在绝对的压倒性证据,所以你要我举证转基因的绝对危害是不现实的
2 一个基本的概念,就是吃转基因和吃非转基因,这些食物都是有DNA片段的,你说我没举转基因进入体内。下面我列举一段话。就是我楼上提供的文献里的,你可以对照全文找到参考文献
Food. DNA from consumed food is usually not considered as a possible source of cfDNA since during food digestion all macromolecules are thought to be degraded to elementary constituents such as amino acids and nucleotides, which are then transferred to the circulatory system through several complex active processes [3]. Though, there are animal studies, mainly focusing on the GMO issue [4], supporting the idea that small fragments of nucleic acids may pass to the bloodstream and even get into various tissues. For example foreign DNA fragments were detected by PCR based techniques in the digestive tract and leukocytes of rainbow trouts fed by genetically modified soybean [37], and other studies report similar results in goats [38], pigs [39,40] and mice [5].
3 虽然我没有能直接提出DNA能整合进人体细胞并大肆干扰。但是我楼上提供的 Cell reserach的文章,也就是植物的DNA的转录产物能被吃掉并被吸收进动物体内并参与某些蛋白质代谢了。这算一个间接的证据。
Exogenous plant MIR168a specifically targets mammalian LDLRAP1: evidence of cross-kingdom regulation by microRNA
Abstract
Our previous studies have demonstrated that stable microRNAs (miRNAs) in mammalian serum and plasma are actively secreted from tissues and cells and can serve as a novel class of biomarkers for diseases, and act as signaling molecules in intercellular communication. Here, we report the surprising finding that exogenous plant miRNAs are present in the sera and tissues of various animals and that these exogenous plant miRNAs are primarily acquired orally, through food intake. MIR168a is abundant in rice and is one of the most highly enriched exogenous plant miRNAs in the sera of Chinese subjects. Functional studies in vitro and in vivo demonstrated that MIR168a could bind to the human/mouse low-density lipoprotein receptor adapter protein 1 (LDLRAP1) mRNA, inhibit LDLRAP1 expression in liver, and consequently decrease LDL removal from mouse plasma. These findings demonstrate that exogenous plant miRNAs in food can regulate the expression of target genes in mammals.
注:GMO Genetically Modified Organism |
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