PMID- 27085528 OWN - NLM STAT- MEDLINE DCOM- 20170217 LR - 20181113 IS - 1432-1335 (Electronic) IS - 0171-5216 (Linking) VI - 142 IP - 7 DP - 2016 Jul TI - Oroxylin A, a natural anticancer flavonoid compound, induces differentiation of t(8;21)-positive Kasumi-1 and primary acute myeloid leukemia cells. PG - 1449-59 LID - 10.1007/s00432-016-2160-1 [doi] AB - PURPOSE: AML1/ETO fusion gene is one of disease-causing genes of t(8;21)-positive acute myeloid leukemia (AML). Oroxylin A (OA) has showed anticancer effects on other cancer cells. Here, studies were conducted to determine the antileukemia effect of OA on t(8;21)-positive AML cells in vitro and in vivo. MATERIALS AND METHODS: The effects of OA on cell viability of t(8;21)-positive Kasumi-1 and primary AML cells were analyzed by MTT assay. Cell differentiation was examined by NBT reduction assay, flow cytometry analysis for CD11b/CD14, and Giemsa stain. Protein expressions were determined by Western blots. Immunofluorescence assay was used to verify the effect of OA on HDAC-1 expression in vivo. Immunohistochemical staining was applied to evaluate leukemic infiltration of AML-bearing NOD/SCID mice. RESULTS: OA enhanced NBT reduction activity and CD11b/CD14 expression of AML1/ETO-positive AML cells markedly. Results of Giemsa staining also demonstrated that OA could induce the morphologic changes with reduction of nuclear/cytoplasmic ratios, suggesting the cell differentiation induced by OA. Further study showed that OA decreased the expression of fusion protein AML1/ETO and down-regulated HDAC-1 protein levels in vitro and in vivo. Moreover, OA increased the expression of differentiation-related proteins C/EBPalpha and P21. Acetylation levels of histones were also advanced obviously after treatment of OA. In vivo study indicated that OA could prolong the survival of AML-bearing NOD/SCID mice and reduce leukocytic infiltration of the spleen. CONCLUSIONS: All these results suggested that OA might be a novel candidate agent for differentiation therapy for AML1/ETO-positive AML and the mechanism required further investigation. FAU - Hui, Hui AU - Hui H AD - State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, JiangSu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, People's Republic of China. FAU - Zhang, Xiaoxiao AU - Zhang X AD - State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, JiangSu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, People's Republic of China. FAU - Li, Hui AU - Li H AD - State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, JiangSu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, People's Republic of China. FAU - Liu, Xiao AU - Liu X AD - State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, JiangSu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, People's Republic of China. FAU - Shen, Le AU - Shen L AD - State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, JiangSu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, People's Republic of China. FAU - Zhu, Yu AU - Zhu Y AD - Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, Jiangsu Province, People's Republic of China. FAU - Xu, Jingyan AU - Xu J AD - Department of Hematology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, People's Republic of China. xjy1967@sina.com. FAU - Guo, Qinglong AU - Guo Q AD - State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, JiangSu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, People's Republic of China. anticancer_drug@163.com. FAU - Lu, Na AU - Lu N AD - State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, JiangSu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, People's Republic of China. luna555@163.com. LA - eng PT - Journal Article DEP - 20160416 PL - Germany TA - J Cancer Res Clin Oncol JT - Journal of cancer research and clinical oncology JID - 7902060 RN - 0 (Antineoplastic Agents) RN - 0 (Core Binding Factor Alpha 2 Subunit) RN - 0 (Flavonoids) RN - 0 (Proto-Oncogene Proteins) RN - 0 (RUNX1 Translocation Partner 1 Protein) RN - 0 (RUNX1 protein, human) RN - 0 (RUNX1T1 protein, human) RN - 0 (Transcription Factors) RN - 53K24Z586G (5,7-dihydroxy-6-methoxy-2-phenylchromen-4-one) RN - EC 3.5.1.98 (Histone Deacetylase 1) SB - IM MH - Animals MH - Antineoplastic Agents/*pharmacology MH - Cell Differentiation/*drug effects MH - *Chromosomes, Human, Pair 12 MH - *Chromosomes, Human, Pair 8 MH - Core Binding Factor Alpha 2 Subunit/metabolism MH - Flavonoids/*pharmacology MH - Histone Deacetylase 1/metabolism MH - Humans MH - Leukemia, Myeloid, Acute/genetics/*pathology MH - Mice MH - Mice, Inbred NOD MH - Mice, SCID MH - Proto-Oncogene Proteins/metabolism MH - RUNX1 Translocation Partner 1 Protein MH - Transcription Factors/metabolism MH - *Translocation, Genetic OTO - NOTNLM OT - AML OT - AML1/ETO OT - Differentiation OT - HDAC-1 EDAT- 2016/04/18 06:00 MHDA- 2017/02/18 06:00 CRDT- 2016/04/18 06:00 PHST- 2016/02/28 00:00 [received] PHST- 2016/04/05 00:00 [accepted] PHST- 2016/04/18 06:00 [entrez] PHST- 2016/04/18 06:00 [pubmed] PHST- 2017/02/18 06:00 [medline] AID - 10.1007/s00432-016-2160-1 [pii] AID - 10.1007/s00432-016-2160-1 [doi] PST - ppublish SO - J Cancer Res Clin Oncol. 2016 Jul;142(7):1449-59. doi: 10.1007/s00432-016-2160-1. Epub 2016 Apr 16.