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    July 07

    Weihong Tan’s lecture 2009-7-6

     

    Tan 85-93年在Umich攻读博士学位,93-04 UFL APassociate professor04-professor期间PNAS N篇,还有一些不怎么熟悉的化学杂志(据说影响因子还挺高)N篇。TanEmory & GITShuming Nie(南开校友)是好朋友,本来还想去听Nielecture的,可惜木有赶上,奔泪……

     

    如何寻找分子方面的差异?——分子探针

    Aptamer (合成实体) is 15-45bp dsDNA. 原理:DNA二级结构与target protein特意binding。有人可能会质疑这个binding的力度是否与antibodyprotein binding的力度相比。Tan的一个学生用什么什么显微镜观察过某个特定的aptamerantibody分别和proteinbinding的力度,发现前者是后者的1.30倍。

     

    Aptamer选择机制

    1.       Random合成

    2.       Select (多重选择提高特异性)

    3.       Indentify

     

    Cell SELEX

    DNA library (45bp)——incubate with positive cells——elute binding DNA——incubate with negative cells——要supernatant——PCR amplify——clone & sequence

     

    Aptamer这个东东的实际应用

    用血样来诊断tumor是个不错的选择,而Lung tumor是很难早期诊断的。Lung tumor表皮脱落进入blood,这样我们可以通过检测blood中是否有能和aptamer bindingcell来判断是否有tumor

     

    这个leture超级赞!之前虽然看过一些aptamerCell SELEXpaper,很难理解。Tanlecture让我茅塞顿开。可惜Tan晚上要去北京开会,本来2hlecture压缩到1h,真遗憾呀。提问环节以副院长为首的海归们都说想跟Tan合作,表现出极大的热情。正如upom跟我透露的一样,Tan是个很nice老师。听口音有点像尹院,应该是南方人,但是却透露着北方人的豪爽,我还以为他是东北人呢(秋秋很开心,hoho)。第一个rotation就卖身Tan吧,呵呵

    Comments (6)

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    婧祎 王wrote:
    我知道的,好像就tan,嘿嘿。可能我不清楚吧。你来了再说吧。做aptamer的application还不错,不过我知道做selex的人都在骂,结果没什么好的。不过rotation也都无所谓啦,呵呵
    July 12
    Xiaoxia Hanwrote:
    to 婧祎:师姐,selex怎么说也比bio之类的有前途吧,到UFL再和师姐聊聊,我们那个Genetics里面好像有几个chem的老师
    July 11
    Xiaoxia Hanwrote:
    to Anhui:没问题呀,不过我之前没有开过party,还要师兄多多关照~~
    July 11
    Anhui Huangwrote:
    这个师妹真强,人还没到就认识了这么多老师同学,来了之后我们应该去你家开PARTY
    July 9
    婧祎 王wrote:
    呵呵,tan是化学系的哦。很牛哦!不过卖身的时候考虑好,做selex可是命苦回报低的差
    July 9
    博雄 刘wrote:
    zan~
    July 8

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