我投的一篇文章外审意见回来了,实验中涉及到用realtime pcr 检测几个基因的相对定量变化,用ddct的方法,内参是GAPDH,编辑给了如下的意见:
1. There is no mention of any assessment of RNA quality, either of its integrity or purity (ie the absence of inhibition). 2. Furthermore, agains all well-published evidence, the authors use a single, unvalidated reference gene to normalise, showing quite marginal differences in mRNA levels in Figure 3. There is a huge body of literature that shows very clearly that this kind of analysis is misleading and inappropriate.
4. it has also been well-known since 1998, when ABI published the details of the DDCq method, that the PCR efficiencies of both genes of interest and reference genes must be known, as otherwise this method of analysis is invalid.
问题1是因为我怕文字太多而没写;
之后的问题就不懂了,我用的GAPDH在以往的研究中很常用啊?还有问题3也搞不懂了。问题4是要测扩增效率么?
请高手不吝赐教!谢谢。 |