PMID- 21159656 OWN - NLM STAT- MEDLINE DCOM- 20110120 LR - 20211103 IS - 1538-7445 (Electronic) IS - 0008-5472 (Print) IS - 0008-5472 (Linking) VI - 70 IP - 24 DP - 2010 Dec 15 TI - The canonical NF-kappaB pathway governs mammary tumorigenesis in transgenic mice and tumor stem cell expansion. PG - 10464-73 LID - 10.1158/0008-5472.CAN-10-0732 [doi] AB - The role of mammary epithelial cell (MEC) NF-kappaB in tumor progression in vivo is unknown, as murine NF-kappaB components and kinases either are required for murine survival or interfere with normal mammary gland development. As NF-kappaB inhibitors block both tumor-associated macrophages (TAM) and MEC NF-kappaB, the importance of MEC NF-kappaB to tumor progression in vivo remained to be determined. Herein, an MEC-targeted inducible transgenic inhibitor of NF-kappaB (IkappaBalphaSR) was developed in ErbB2 mammary oncomice. Inducible suppression of NF-kappaB in the adult mammary epithelium delayed the onset and number of new tumors. Within similar sized breast tumors, TAM and tumor neoangiogenesis was reduced. Coculture experiments demonstrated MEC NF-kappaB enhanced TAM recruitment. Genome-wide expression and proteomic analysis showed that IkappaBalphaSR inhibited tumor stem cell pathways. IkappaBalphaSR inhibited breast tumor stem cell markers in transgenic tumors, reduced stem cell expansion in vitro, and repressed expression of Nanog and Sox2 in vivo and in vitro. MEC NF-kappaB contributes to mammary tumorigenesis. As we show that NF-kappaB contributes to expansion of breast tumor stem cells and heterotypic signals that enhance TAM and vasculogenesis, these processes may contribute to NF-kappaB-dependent mammary tumorigenesis. CI - (c)2010 AACR. FAU - Liu, Manran AU - Liu M AD - Department of Cancer Biology, Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA. FAU - Sakamaki, Toshiyuki AU - Sakamaki T FAU - Casimiro, Mathew C AU - Casimiro MC FAU - Willmarth, Nicole E AU - Willmarth NE FAU - Quong, Andrew A AU - Quong AA FAU - Ju, Xiaoming AU - Ju X FAU - Ojeifo, John AU - Ojeifo J FAU - Jiao, Xuanmao AU - Jiao X FAU - Yeow, Wen-Shuz AU - Yeow WS FAU - Katiyar, Sanjay AU - Katiyar S FAU - Shirley, L Andrew AU - Shirley LA FAU - Joyce, David AU - Joyce D FAU - Lisanti, Michael P AU - Lisanti MP FAU - Albanese, Christopher AU - Albanese C FAU - Pestell, Richard G AU - Pestell RG LA - eng GR - R01 CA075503/CA/NCI NIH HHS/United States GR - P30CA56036/CA/NCI NIH HHS/United States GR - R01 CA120876/CA/NCI NIH HHS/United States GR - R01CA75503/CA/NCI NIH HHS/United States GR - R01CA120876/CA/NCI NIH HHS/United States GR - R01 CA070896/CA/NCI NIH HHS/United States GR - R01CA107382/CA/NCI NIH HHS/United States GR - R01CA70896/CA/NCI NIH HHS/United States GR - R01 CA107382/CA/NCI NIH HHS/United States GR - R01CA86072/CA/NCI NIH HHS/United States GR - R01 CA070896-07A1/CA/NCI NIH HHS/United States GR - R01 CA086072/CA/NCI NIH HHS/United States GR - R01 CA107382-06/CA/NCI NIH HHS/United States GR - R01 CA075503-02/CA/NCI NIH HHS/United States GR - P30 CA056036/CA/NCI NIH HHS/United States GR - R01 CA086072-01A2/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - United States TA - Cancer Res JT - Cancer research JID - 2984705R RN - 0 (I-kappa B Proteins) RN - 0 (NF-kappa B) RN - 0 (Nfkbia protein, mouse) RN - 0 (Reactive Oxygen Species) RN - 139874-52-5 (NF-KappaB Inhibitor alpha) RN - EC 2.7.10.1 (Receptor, ErbB-2) SB - IM MH - Animals MH - Cell Growth Processes/physiology MH - Cell Transformation, Neoplastic/genetics/metabolism/*pathology MH - Epithelial Cells/pathology MH - Epithelial-Mesenchymal Transition MH - Female MH - I-kappa B Proteins/biosynthesis/genetics MH - Mammary Neoplasms, Experimental/genetics/metabolism/*pathology MH - Mice MH - Mice, Transgenic MH - NF-KappaB Inhibitor alpha MH - NF-kappa B/antagonists & inhibitors/*metabolism MH - Neoplastic Stem Cells/metabolism/*pathology MH - Reactive Oxygen Species/metabolism MH - Receptor, ErbB-2/biosynthesis MH - Transfection PMC - PMC3010731 MID - NIHMS247137 EDAT- 2010/12/17 06:00 MHDA- 2011/01/21 06:00 PMCR- 2011/12/15 CRDT- 2010/12/17 06:00 PHST- 2010/12/17 06:00 [entrez] PHST- 2010/12/17 06:00 [pubmed] PHST- 2011/01/21 06:00 [medline] PHST- 2011/12/15 00:00 [pmc-release] AID - 70/24/10464 [pii] AID - 10.1158/0008-5472.CAN-10-0732 [doi] PST - ppublish SO - Cancer Res. 2010 Dec 15;70(24):10464-73. doi: 10.1158/0008-5472.CAN-10-0732.