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Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
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Deprecated: Implicit conversion from float 247.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Biosci+Rep 2019 ; 39 (1): ä Nephropedia Template TP
Biosci Rep 2019[Jan]; 39 (1): ä PMID30538170show ga
The tetracycline repressor (TetR)-regulated system is a widely used tool to study gene functions through control of its expression. Various effectors such as tetracycline (Tc) and doxycycline (Dox) quickly induce or shut down gene expression, but reversing gene expression has not been eligible due to long half-lives of such effectors. Here, we found that procaspase activating compound 1 (PAC-1) rapidly reduces transient expression of TetR-regulated green fluorescent protein (GFP) in mammalian cells. Next, we applied PAC-1 to control of expression of transient receptor potential melastatin 7 (TRPM7) protein, whose downstream cellular events can be monitored by cell morphological changes. We observed that PAC-1 quickly reduces TRPM7 expression, consequently affecting cell morphology regulated by TRPM7. The present study demonstrates the first small molecule that efficiently turns off the TetR-regulated gene expression in mammalian cells, thereby precisely regulating the expression level of target gene.