title: LYG-202, a new flavonoid with a piperazine substitution, shows antitumor effects in vivo and in vitro.
abstract: LYG-202 is a newly synthesized flavonoid with a piperazine substitution. We investigated the antitumor effect of LYG-202 in vivo and in vitro. We show that, LYG-202 significantly decreases tumor growth in mice inoculated with S180 sarcoma cells, compared with the control group. Meanwhile, the viabilities of various kinds of tumor cells were inhibited by LYG-202 with IC(50) values in the range of 4.80 to 27.70 microM. Then apoptosis induced by LYG-202 in HepG2 cells was characterized by DAPI staining and Annexin V/PI double staining and degradation of PARP was observed. Activation of the caspase cascade for both the extrinsic and intrinsic pathways was demonstrated, including caspase-8, -9, and -3. The results also showed that the expression of Bcl-2 protein decreased whereas that of Bax protein increased, leading to an increase of the Bax/Bcl-2 ratio. Our results demonstrated that LYG-202 exhibited strong antitumor effect in vivo and in vitro, involving with apoptosis induction.
authors.affiliation: Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing 210009, People's Republic of China.
authors.forename: Shi
authors.initials: S
authors.lastname: Zeng
authors.forename: Wei
authors.initials: W
authors.lastname: Liu
authors.forename: Fei-Fei
authors.initials: FF
authors.lastname: Nie
authors.forename: Qing
authors.initials: Q
authors.lastname: Zhao
authors.forename: Jing-Jing
authors.initials: JJ
authors.lastname: Rong
authors.forename: Jia
authors.initials: J
authors.lastname: Wang
authors.forename: Lei
authors.initials: L
authors.lastname: Tao
authors.forename: Qi
authors.initials: Q
authors.lastname: Qi
authors.forename: Na
authors.initials: N
authors.lastname: Lu
authors.forename: Zhi-Yu
authors.initials: ZY
authors.lastname: Li
authors.forename: Qing-Long
authors.initials: QL
authors.lastname: Guo
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000737:chemistry / Q000494:pharmacology*; D017209:Apoptosis; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects; D002470:Cell Survival / Q000187:drug effects; D047309:Flavones / Q000737:chemistry / Q000494:pharmacology*; D005419:Flavonoids / Q000737:chemistry / Q000494:pharmacology*; D006801:Humans; D008297:Male; D053078:Membrane Potential, Mitochondrial / Q000187:drug effects; D051379:Mice; D008813:Mice, Inbred ICR; D000077489:Piperazine; D010879:Piperazines / Q000737:chemistry / Q000494:pharmacology*; D015398:Signal Transduction / Q000187:drug effects; D023041:Xenograft Model Antitumor Assays
chemical_list: D000970:Antineoplastic Agents; D047309:Flavones; D005419:Flavonoids; C541987:LYG 202; D010879:Piperazines; D000077489:Piperazine