+-------COMP:N-N(of)-------+   
                               |           +-MOD_ATT:N-ADJ+   
              +SUBJ:+--OBJ:V-N-+           |       +MOD_AT+   
              |     |          |           |       |      |   
 Trichostatin A decreases expression of __SP__ __NODE__ mRNA .
SUBJ:V-N (decrease,A)
OBJ:V-N (decrease,expression)
COMP:N-N(of) (expression,mRNA)
MOD_ATT:N-ADJ (mRNA,__SP__)
MOD_ATT:N-ADJ (mRNA,__NODE__)