Similarly, more recent works demonstrated that metabolites of the flavonoid quercetin suppressed MMP-2 activity and invasion of a lung cancer cell line in a PPARγ-dependent manner [92], and that PPARγ blocked the increase in activities of MMP-2 and MMP-9 due to Toxoplasma Gondii infection in astrocytes [93]. This evidence concerns the gene MMP2 and lung carcinoma.