报告时间：2013年9月24日（星期二）下午13:00-14:00

地点：北京大学定量生物学中心老化学楼东配楼102会议室（理教路西/光华楼北侧）

摘要： 

MicroRNAs are small non-coding RNAs that regulate expression of target genes at the post-transcriptional level.   A microRNA can target more than 100 genes and one gene can in turn be regulated by multiple microRNAs.  Given the broad interactions between microRNAs and their targets, the origin and evolution of such a system is intriguing.   My research focuses on the gene regulation mediated by microRNAs as well as other small RNAs from the perspective of evolutionary biology.

In this talk, I will first illustrate the birth and death process of microRNAs by showing that most newly emerged microRNAs are evolutionarily transient.   Next I will discuss the impacts of microRNA targeting on natural variation in human gene expression.  Then I will talk about the relation between aberrant regulation of microRNAs and cancer.   Finally, I will briefly describe my research on population genomics of piwi-interacting RNAs (piRNAs), another class of small RNAs.

主持人：汤超教授