PMID- 30091641 OWN - NLM STAT- MEDLINE DCOM- 20190506 LR - 20231213 IS - 1939-4586 (Electronic) IS - 1059-1524 (Print) IS - 1059-1524 (Linking) VI - 29 IP - 20 DP - 2018 Oct 1 TI - WDR62 mediates TNFalpha-dependent JNK activation via TRAF2-MLK3 axis. PG - 2470-2480 LID - 10.1091/mbc.E17-08-0504 [doi] AB - The mitogen-activated protein kinases (MAPKs) regulate a variety of cellular processes. The three main MAPK cascades are the extracellular signal-regulated kinases (ERK), c-Jun N-terminal kinase (JNK), and p38 kinases. A typical MAPK cascade is composed of MAP3K-MAP2K-MAPK kinases that are held by scaffold proteins. Scaffolds function to assemble the protein tier and contribute to the specificity and efficacy of signal transmission. WD repeat domain 62 (WDR62) is a JNK scaffold protein, interacting with JNK, MKK7, and several MAP3Ks. The loss of WDR62 in human leads to microcephaly and pachygyria. Yet the role of WDR62 in cellular function is not fully studied. We used the CRISPR/Cas9 and short hairpin RNA approaches to establish a human breast cancer cell line MDA-MB-231 with WDR62 loss of function and studied the consequence to JNK signaling. In growing cells, WDR62 is responsible for the basal expression of c-Jun. In stressed cells, WDR62 specifically mediates TNFalpha-dependent JNK activation through the association with both the adaptor protein, TNF receptor-associated factor 2 (TRAF2), and the MAP3K protein, mixed lineage kinase 3. TNFalpha-dependent JNK activation is mediated by WDR62 in HCT116 and HeLa cell lines as well. MDA-MB-231 WDR62-knockout cells display increased resistance to TNFalpha-induced cell death. Collectively, WDR62 coordinates the TNFalpha receptor signaling pathway to JNK activation through association with multiple kinases and the adaptor protein TRAF2. FAU - Prinz, Elad AU - Prinz E AD - Department of Cell Biology and Cancer Science, B. Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa 31096, Israel. FAU - Aviram, Sharon AU - Aviram S AD - Department of Cell Biology and Cancer Science, B. Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa 31096, Israel. FAU - Aronheim, Ami AU - Aronheim A AD - Department of Cell Biology and Cancer Science, B. Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa 31096, Israel. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180809 PL - United States TA - Mol Biol Cell JT - Molecular biology of the cell JID - 9201390 RN - 0 (Cell Cycle Proteins) RN - 0 (Nerve Tissue Proteins) RN - 0 (TNF Receptor-Associated Factor 2) RN - 0 (Tumor Necrosis Factor-alpha) RN - 0 (WDR62 protein, human) RN - EC 2.7.11.24 (JNK Mitogen-Activated Protein Kinases) RN - EC 2.7.11.25 (MAP Kinase Kinase Kinases) SB - IM MH - Apoptosis/drug effects MH - Base Sequence MH - Cell Cycle Proteins MH - Cell Line, Tumor MH - Enzyme Activation/drug effects MH - Humans MH - JNK Mitogen-Activated Protein Kinases/*metabolism MH - MAP Kinase Kinase Kinases/*metabolism MH - Models, Biological MH - Nerve Tissue Proteins/*metabolism MH - Protein Binding/drug effects MH - *Signal Transduction/drug effects MH - TNF Receptor-Associated Factor 2/*metabolism MH - Tumor Necrosis Factor-alpha/*pharmacology MH - Mitogen-Activated Protein Kinase Kinase Kinase 11 PMC - PMC6233063 EDAT- 2018/08/10 06:00 MHDA- 2019/05/07 06:00 PMCR- 2018/12/16 CRDT- 2018/08/10 06:00 PHST- 2018/08/10 06:00 [pubmed] PHST- 2019/05/07 06:00 [medline] PHST- 2018/08/10 06:00 [entrez] PHST- 2018/12/16 00:00 [pmc-release] AID - E17-08-0504 [pii] AID - 10.1091/mbc.E17-08-0504 [doi] PST - ppublish SO - Mol Biol Cell. 2018 Oct 1;29(20):2470-2480. doi: 10.1091/mbc.E17-08-0504. Epub 2018 Aug 9.