PMID- 25694511 OWN - NLM STAT- MEDLINE DCOM- 20151201 LR - 20181113 IS - 1479-6821 (Electronic) IS - 1351-0088 (Print) IS - 1351-0088 (Linking) VI - 22 IP - 2 DP - 2015 Apr TI - Highly specific role of the insulin receptor in breast cancer progression. PG - 145-57 LID - 10.1530/ERC-14-0490 [doi] AB - Accumulating evidence from clinical trials indicates that specific targeting of the IGF1 receptor (IGF1R) is not efficient as an anti-breast cancer treatment. One possible reason is that the mitogenic signals from the insulin receptor (IR) can be processed independently or as compensation to inhibition of the IGF1R. In this study, we highlight the role of the IR in mediating breast tumor progression in both WT mice and a hyperinsulinemic MKR mouse model by induction of Ir (Insr) or Igf1r knockdown (KD) in the mammary carcinoma Mvt-1 cell line. By using the specific IR antagonist-S961, we demonstrated that Igf1r-KD induces elevated responses by the IR to IGF1. On the other hand, Ir-KD cells generated significantly smaller tumors in the mammary fat pads of both WT and MKR mice, as opposed to control cells, whereas the Igf1r-KD cells did not. The tumorigenic effects of insulin on the Mvt-1 cells were also demonstrated using microarray analysis, which indicates alteration of genes and signaling pathways involved in proliferation, the cell cycle, and apoptosis following insulin stimulation. In addition, the correlation between IR and the potential prognostic marker for aggressive breast cancer, CD24, was examined in the Ir-KD cells. Fluorescence-activated cell sorting (FACS) analysis revealed more than 60% reduction in CD24 expression in the Ir-KD cells when compared with the control cells. Our results also indicate that CD24-expressing cells can restore, at least in part, the tumorigenic capacity of Ir-KD cells. Taken together, our results highlight the mitogenic role of the IR in mammary tumor progression with a direct link to CD24 expression. CI - (c) 2015 Society for Endocrinology. FAU - Rostoker, Ran AU - Rostoker R AD - Clinical Research Institute at Rambam (CRIR) and the Faculty of MedicineTechnion, Diabetes and Metabolism Clinical Research Center of Excellence, Haifa, IsraelThe Laboratory of Molecular MedicineRambam Health Care Campus and Rappaport Faculty of Medicine and Research Institute, Technion, Haifa 31096, IsraelDivision of EndocrinologyDiabetes and Bone Diseases, Icahn School of Medicine at Mount Sinai, New York City, New York, USA. FAU - Abelson, Sagi AU - Abelson S AD - Clinical Research Institute at Rambam (CRIR) and the Faculty of MedicineTechnion, Diabetes and Metabolism Clinical Research Center of Excellence, Haifa, IsraelThe Laboratory of Molecular MedicineRambam Health Care Campus and Rappaport Faculty of Medicine and Research Institute, Technion, Haifa 31096, IsraelDivision of EndocrinologyDiabetes and Bone Diseases, Icahn School of Medicine at Mount Sinai, New York City, New York, USA. FAU - Bitton-Worms, Keren AU - Bitton-Worms K AD - Clinical Research Institute at Rambam (CRIR) and the Faculty of MedicineTechnion, Diabetes and Metabolism Clinical Research Center of Excellence, Haifa, IsraelThe Laboratory of Molecular MedicineRambam Health Care Campus and Rappaport Faculty of Medicine and Research Institute, Technion, Haifa 31096, IsraelDivision of EndocrinologyDiabetes and Bone Diseases, Icahn School of Medicine at Mount Sinai, New York City, New York, USA. FAU - Genkin, Inna AU - Genkin I AD - Clinical Research Institute at Rambam (CRIR) and the Faculty of MedicineTechnion, Diabetes and Metabolism Clinical Research Center of Excellence, Haifa, IsraelThe Laboratory of Molecular MedicineRambam Health Care Campus and Rappaport Faculty of Medicine and Research Institute, Technion, Haifa 31096, IsraelDivision of EndocrinologyDiabetes and Bone Diseases, Icahn School of Medicine at Mount Sinai, New York City, New York, USA. FAU - Ben-Shmuel, Sarit AU - Ben-Shmuel S AD - Clinical Research Institute at Rambam (CRIR) and the Faculty of MedicineTechnion, Diabetes and Metabolism Clinical Research Center of Excellence, Haifa, IsraelThe Laboratory of Molecular MedicineRambam Health Care Campus and Rappaport Faculty of Medicine and Research Institute, Technion, Haifa 31096, IsraelDivision of EndocrinologyDiabetes and Bone Diseases, Icahn School of Medicine at Mount Sinai, New York City, New York, USA. FAU - Dakwar, Maria AU - Dakwar M AD - Clinical Research Institute at Rambam (CRIR) and the Faculty of MedicineTechnion, Diabetes and Metabolism Clinical Research Center of Excellence, Haifa, IsraelThe Laboratory of Molecular MedicineRambam Health Care Campus and Rappaport Faculty of Medicine and Research Institute, Technion, Haifa 31096, IsraelDivision of EndocrinologyDiabetes and Bone Diseases, Icahn School of Medicine at Mount Sinai, New York City, New York, USA. FAU - Orr, Zila Shen AU - Orr ZS AD - Clinical Research Institute at Rambam (CRIR) and the Faculty of MedicineTechnion, Diabetes and Metabolism Clinical Research Center of Excellence, Haifa, IsraelThe Laboratory of Molecular MedicineRambam Health Care Campus and Rappaport Faculty of Medicine and Research Institute, Technion, Haifa 31096, IsraelDivision of EndocrinologyDiabetes and Bone Diseases, Icahn School of Medicine at Mount Sinai, New York City, New York, USA. FAU - Caspi, Avishay AU - Caspi A AD - Clinical Research Institute at Rambam (CRIR) and the Faculty of MedicineTechnion, Diabetes and Metabolism Clinical Research Center of Excellence, Haifa, IsraelThe Laboratory of Molecular MedicineRambam Health Care Campus and Rappaport Faculty of Medicine and Research Institute, Technion, Haifa 31096, IsraelDivision of EndocrinologyDiabetes and Bone Diseases, Icahn School of Medicine at Mount Sinai, New York City, New York, USA. FAU - Tzukerman, Maty AU - Tzukerman M AD - Clinical Research Institute at Rambam (CRIR) and the Faculty of MedicineTechnion, Diabetes and Metabolism Clinical Research Center of Excellence, Haifa, IsraelThe Laboratory of Molecular MedicineRambam Health Care Campus and Rappaport Faculty of Medicine and Research Institute, Technion, Haifa 31096, IsraelDivision of EndocrinologyDiabetes and Bone Diseases, Icahn School of Medicine at Mount Sinai, New York City, New York, USA. FAU - LeRoith, Derek AU - LeRoith D AD - Clinical Research Institute at Rambam (CRIR) and the Faculty of MedicineTechnion, Diabetes and Metabolism Clinical Research Center of Excellence, Haifa, IsraelThe Laboratory of Molecular MedicineRambam Health Care Campus and Rappaport Faculty of Medicine and Research Institute, Technion, Haifa 31096, IsraelDivision of EndocrinologyDiabetes and Bone Diseases, Icahn School of Medicine at Mount Sinai, New York City, New York, USA Clinical Research Institute at Rambam (CRIR) and the Faculty of MedicineTechnion, Diabetes and Metabolism Clinical Research Center of Excellence, Haifa, IsraelThe Laboratory of Molecular MedicineRambam Health Care Campus and Rappaport Faculty of Medicine and Research Institute, Technion, Haifa 31096, IsraelDivision of EndocrinologyDiabetes and Bone Diseases, Icahn School of Medicine at Mount Sinai, New York City, New York, USA d_leroith@rambam.health.gov.il. LA - eng GR - R01 CA128799/CA/NCI NIH HHS/United States GR - 2R01CA128799-06A1/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 - England TA - Endocr Relat Cancer JT - Endocrine-related cancer JID - 9436481 RN - 0 (CD24 Antigen) RN - 0 (Cd24a protein, mouse) RN - 0 (Insulin) RN - EC 2.7.1.- (Phosphatidylinositol 3-Kinases) RN - EC 2.7.10.1 (Receptor, IGF Type 1) RN - EC 2.7.10.1 (Receptor, Insulin) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinases) SB - IM MH - Animals MH - CD24 Antigen/metabolism MH - Cell Line, Tumor MH - Female MH - Gene Expression Regulation, Neoplastic MH - Insulin/pharmacology MH - Mammary Neoplasms, Animal/*metabolism/pathology MH - Mice MH - Mice, Transgenic MH - Mitogen-Activated Protein Kinases/metabolism MH - Oligonucleotide Array Sequence Analysis MH - Phosphatidylinositol 3-Kinases/metabolism MH - Proto-Oncogene Proteins c-akt/metabolism MH - Receptor, IGF Type 1/metabolism MH - Receptor, Insulin/*metabolism MH - Signal Transduction MH - Tumor Burden PMC - PMC4362669 MID - NIHMS660610 OTO - NOTNLM OT - breast cancer and CD24 OT - hyperinsulinemia OT - insulin receptor OT - insulin-like growth factor 1 receptor EDAT- 2015/02/20 06:00 MHDA- 2015/12/15 06:00 PMCR- 2015/04/01 CRDT- 2015/02/20 06:00 PHST- 2015/02/20 06:00 [entrez] PHST- 2015/02/20 06:00 [pubmed] PHST- 2015/12/15 06:00 [medline] PHST- 2015/04/01 00:00 [pmc-release] AID - 22/2/145 [pii] AID - 10.1530/ERC-14-0490 [doi] PST - ppublish SO - Endocr Relat Cancer. 2015 Apr;22(2):145-57. doi: 10.1530/ERC-14-0490.