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Kuo HP, Wang Z, Lee DF, Iwasaki M, Duque-Afonso J, Wong SH, Lin CH, Figueroa ME, Su J, Lemischka IR, Cleary ML. Epigenetic roles of MLL oncoproteins are dependent on NF-κB. Cancer Cell 2013; 24:423-37. [PMID: 24054986 PMCID: PMC3816582 DOI: 10.1016/j.ccr.2013.08.019] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Revised: 07/12/2013] [Accepted: 08/22/2013] [Indexed: 11/21/2022]
Abstract
MLL fusion proteins in leukemia induce aberrant transcriptional elongation and associated chromatin perturbations; however, the upstream signaling pathways and activators that recruit or retain MLL oncoproteins at initiated promoters are unknown. Through functional and comparative genomic studies, we identified an essential role for NF-κB signaling in MLL leukemia. Suppression of NF-κB led to robust antileukemia effects that phenocopied loss of functional MLL oncoprotein or associated epigenetic cofactors. The NF-κB subunit RELA occupies promoter regions of crucial MLL target genes and sustains the MLL-dependent leukemia stem cell program. IKK/NF-κB signaling is required for wild-type and fusion MLL protein retention and maintenance of associated histone modifications, providing a molecular rationale for enhanced efficacy in therapeutic targeting of this pathway in MLL leukemias.
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Affiliation(s)
- Hsu-Ping Kuo
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Zhong Wang
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Dung-Fang Lee
- Department of Developmental and Regenerative Biology and The Black Family Stem Cell Institute, Mount Sinai School of Medicine, New York, NY 10029, USA
| | - Masayuki Iwasaki
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Jesus Duque-Afonso
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Stephen H.K. Wong
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Chiou-Hong Lin
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Maria E. Figueroa
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Jie Su
- Department of Developmental and Regenerative Biology and The Black Family Stem Cell Institute, Mount Sinai School of Medicine, New York, NY 10029, USA
| | - Ihor R. Lemischka
- Department of Developmental and Regenerative Biology and The Black Family Stem Cell Institute, Mount Sinai School of Medicine, New York, NY 10029, USA
| | - Michael L. Cleary
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305, USA
- Correspondence: , Ph: 650-723-5471, Fax: 650-498-6222
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Xia M, Liu J, Wu X, Liu S, Li G, Han C, Song L, Li Z, Wang Q, Wang J, Xu T, Cao X. Histone Methyltransferase Ash1l Suppresses Interleukin-6 Production and Inflammatory Autoimmune Diseases by Inducing the Ubiquitin-Editing Enzyme A20. Immunity 2013; 39:470-81. [DOI: 10.1016/j.immuni.2013.08.016] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Accepted: 06/06/2013] [Indexed: 10/26/2022]
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