AAV with tMCK promoter driven mCherry

This AAV expresses mCherry driven by a muscle tMCK promoter.

tMCK is constructed by ligating a triple tandem copies of mouse MCK enhancer ( about200 bps each) to the ~100bp mouse MCK basal promoter.). This promoter shows extremely sensitive tissue-specificity: (1) In differentiated C2C12 myotubes, the tMCK promoter is 30-50 fold stronger than the Enh358MCK promoter and 10-20 fold stronger than the CMV promoter; (2) In muscle tissue, tMCK promoter is 15-20 fold stronger than the Enh358MCK promoter, and 3-5 fold stronger than the CMV promoter; (3) Strong tissue-specificity: in liver tissue, the expression level from tMCK promoter is only about 0.3-0.5% of that of the CMV promoter.

mCherry was derived from DsRed through extensive mutagenesis. It has an Excitation/Emission spectrum of 590nm/610nm. mCherry's emission spectrum is similar to the following fluorescent markers: mRuby (Em=605nM), JRed (Em=610nM), mRFP1 (Em=607nM), and HcRed1