Inside Cover Picture

A chemical investigation of the deep-sea-derived fungus Penicillium allii-sativi resulted in the discovery of four new (1—4) and one known (5) meroterpenoids. Compound 3 significantly blocked the mTOR signaling pathway, resulting in the arrest of cell cycle at G0-G1 phase and triggering mitochondrial apoptosis in Hela cells. While macrophorin A effectively triggered cell death in MDA-MB-231 cancer cells by activating apoptosis pathways involving death receptors, mitochondria, mTOR, and TNF. More details are discussed in the article by Yang et al. on pages 3283—3292.