"Pre-treatment with beta-arrestin2 agonists was shown to inhibit the AMPK/mTOR signaling pathway and to inhibit autophagy by restoring the levels of beta-arrestin2 in BEAS-2B cells. These changes were reversed with the knockdown of beta-arrestin2 indicating that beta-arrestin2 suppressed autophagy through the AMPK-mTOR signaling pathway."xsd:string