PMID- 23698634 OWN - NLM STAT- MEDLINE DCOM- 20131209 LR - 20161125 IS - 1460-2180 (Electronic) IS - 0143-3334 (Linking) VI - 34 IP - 10 DP - 2013 Oct TI - Histone demethylase KDM4C regulates sphere formation by mediating the cross talk between Wnt and Notch pathways in colonic cancer cells. PG - 2380-8 LID - 10.1093/carcin/bgt174 [doi] AB - Alterations in genes coding for histone modifiers are found in human cancers, suggesting that histone modification is involved in malignant features of neoplastic cells. This study showed that a histone demethylase KDM4C is significant for colonosphere formation by mediating the cross talk between oncogenic pathways through a feed-forward mechanism. The expression of KDM4C gene was increased in spheres from colorectal cancer (CRC) cells and the knockdown (KD) of KDM4C eliminated colonosphere formation. We found that the KD of beta-catenin, an important oncogenic factor in CRC, resulted in not only decreased sphere formation but also impaired upregulation of KDM4C gene in spheres. beta-Catenin bound to the KDM4C promoter, suggesting that KDM4C is involved in the sphere-forming ability downstream of beta-catenin in CRC cells. Microarray analysis identified the JAG1 gene that codes for a notch ligand Jagged1 responsible for sphere formation as a target of KDM4C. KDM4C KD decreased the expression of JAG1 gene, and the downregulation of JAG1 gene recapitulated the impaired colonosphere formation. JAG1 is also a target of beta-catenin, and chromatin immunoprecipitation analysis showed the binding of beta-catenin and KDM4C onto the JAG1 promoter during colonosphere formation. Importantly, KDM4C KD ruined the recruitment of beta-catenin onto the JAG1 promoter independently of the H3-K9 methylation status and blunted JAG1 expression during sphere formation. These data indicate that KDM4C maintains the sphere-forming capacity in CRCs by mediating the beta-catenin-dependent transcription of JAG1 in a feed-forward manner. FAU - Yamamoto, Shinzo AU - Yamamoto S AD - Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan. FAU - Tateishi, Keisuke AU - Tateishi K FAU - Kudo, Yotaro AU - Kudo Y FAU - Yamamoto, Keisuke AU - Yamamoto K FAU - Isagawa, Takayuki AU - Isagawa T FAU - Nagae, Genta AU - Nagae G FAU - Nakatsuka, Takuma AU - Nakatsuka T FAU - Asaoka, Yoshinari AU - Asaoka Y FAU - Ijichi, Hideaki AU - Ijichi H FAU - Hirata, Yoshihiro AU - Hirata Y FAU - Otsuka, Motoyuki AU - Otsuka M FAU - Ikenoue, Tsuneo AU - Ikenoue T FAU - Aburatani, Hiroyuki AU - Aburatani H FAU - Omata, Masao AU - Omata M FAU - Koike, Kazuhiko AU - Koike K LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130522 PL - England TA - Carcinogenesis JT - Carcinogenesis JID - 8008055 RN - 0 (Calcium-Binding Proteins) RN - 0 (Intercellular Signaling Peptides and Proteins) RN - 0 (JAG1 protein, human) RN - 0 (Jag1 protein, mouse) RN - 0 (Jagged-1 Protein) RN - 0 (KDM4C protein, human) RN - 0 (Membrane Proteins) RN - 0 (Receptors, Notch) RN - 0 (Serrate-Jagged Proteins) RN - 0 (Wnt Proteins) RN - 0 (beta Catenin) RN - EC 1.14.11.- (Jumonji Domain-Containing Histone Demethylases) SB - IM MH - Animals MH - Calcium-Binding Proteins/genetics/metabolism MH - Cell Line, Tumor MH - Colorectal Neoplasms/*genetics/*metabolism/pathology MH - Gene Expression Regulation, Neoplastic MH - Heterografts MH - Humans MH - Intercellular Signaling Peptides and Proteins/genetics/metabolism MH - Jagged-1 Protein MH - Jumonji Domain-Containing Histone Demethylases/*genetics/metabolism MH - Membrane Proteins/genetics/metabolism MH - Mice MH - Models, Biological MH - Promoter Regions, Genetic MH - Protein Binding MH - Receptors, Notch/*metabolism MH - Serrate-Jagged Proteins MH - *Signal Transduction MH - Spheroids, Cellular MH - Tumor Burden/genetics MH - Tumor Cells, Cultured MH - Wnt Proteins/*metabolism MH - beta Catenin/genetics/metabolism EDAT- 2013/05/24 06:00 MHDA- 2013/12/16 06:00 CRDT- 2013/05/24 06:00 PHST- 2013/05/24 06:00 [entrez] PHST- 2013/05/24 06:00 [pubmed] PHST- 2013/12/16 06:00 [medline] AID - bgt174 [pii] AID - 10.1093/carcin/bgt174 [doi] PST - ppublish SO - Carcinogenesis. 2013 Oct;34(10):2380-8. doi: 10.1093/carcin/bgt174. Epub 2013 May 22.