FABP4 and infection: qRT‐PCR analysis revealed that lenti‐shPPARGC1B infection significantly decreased PPARGC1B mRNA expression (Figure 6A), which resulted in significant down‐regulation of the mRNA levels of the adipogenic differentiation markers (PPARγ, PLIN1, LPL and FABP4; Figure 6B) as compared with the lenti‐ctrl infection.