Cyanation of N-acylhydrazones using trimethylsilylcyanide (TMSCN) proceeded well in the presence of an amine to afford the corresponding α-hydrazinonitriles in high yields. For less reactive substrates, the combined use of an amine and a catalytic amount of scandium triflate [Sc(OTf)3] was effective to promote the reactions. The mechanistic study suggested that the amine worked as a Brønstedbase
Microrna modulators and method for identifying and using the same
申请人:Huang Qihong
公开号:US20100196357A1
公开(公告)日:2010-08-05
The present invention is a method for identifying agents which modulate microRNA activity. The invention involves contacting a cell harboring a microRNA and a microRNA binding sequence, which is operably linked to a nucleic acid molecule encoding a reporter protein, with a test agent and determining whether the test agent increases or decreases the expression of the reporter protein thereby identifying a microRNA modulator. Antagonists identified by this screening assay are provided, as are methods for using the same to inhibit microRNA activity and prevent or treat disease.
MicroRNA Modulators and Method for Identifying And Using The Same
申请人:Huang Qihong
公开号:US20120010177A1
公开(公告)日:2012-01-12
The present invention is a method for identifying agents which modulate microRNA activity. The invention involves contacting a cell harboring a microRNA and a microRNA binding sequence, which is operably linked to a nucleic acid molecule encoding a reporter protein, with a test agent and determining whether the test agent increases or decreases the expression of the reporter protein thereby identifying a microRNA modulator. Antagonists identified by this screening assay are provided, as are methods for using the same to inhibit microRNA activity and prevent or treat disease.
MicroRNA Modulators and Method for Identifying and Using the Same
申请人:Huang Qihong
公开号:US20130023498A1
公开(公告)日:2013-01-24
The present invention is a method for identifying agents which modulate microRNA activity. The invention involves contacting a cell harboring a microRNA and a microRNA binding sequence, which is operably linked to a nucleic acid molecule encoding a reporter protein, with a test agent and determining whether the test agent increases or decreases the expression of the reporter protein thereby identifying a microRNA modulator. Antagonists identified by this screening assay are provided, as are methods for using the same to inhibit microRNA activity and prevent or treat disease.