PMID- 26990064 OWN - NLM STAT- MEDLINE DCOM- 20170605 LR - 20220129 IS - 1945-7170 (Electronic) IS - 0013-7227 (Print) IS - 0013-7227 (Linking) VI - 157 IP - 5 DP - 2016 May TI - Pasireotide Therapy of Multiple Endocrine Neoplasia Type 1-Associated Neuroendocrine Tumors in Female Mice Deleted for an Men1 Allele Improves Survival and Reduces Tumor Progression. PG - 1789-98 LID - 10.1210/en.2015-1965 [doi] AB - Pasireotide, a somatostatin analog, is reported to have anti-proliferative effects in neuroendocrine tumors (NETs). We therefore assessed the efficacy of pasireotide for treating pancreatic and pituitary NETs that develop in a mouse model of multiple endocrine neoplasia type 1 (MEN1). Men1(+/-) mice were treated from age 12 mo with 40 mg/kg pasireotide long-acting release formulation, or PBS, intramuscularly monthly for 9 mo. The Men1(+/-) mice had magnetic resonance imaging at 12 and 21 mo, and from 20 mo oral 5-bromo-2-deoxyuridine for 1 mo, to assess tumor development and proliferation, respectively. NETs were collected at age 21 mo, and proliferation and apoptosis assessed by immunohistochemistry and TUNEL assays, respectively. Pasireotide-treated Men1(+/-) mice had increased survival (pasireotide, 80.9% vs PBS, 65.2%; P < .05), with fewer mice developing pancreatic NETs (pasireotide, 86.9% vs PBS, 96.9%; P < .05) and smaller increases in pituitary NET volumes (pre-treated vs post-treated, 0.803 +/- 0.058 mm(3) vs 2.872 +/- 0.728 mm(3) [pasireotide] compared with 0.844 +/- 0.066 mm(3) vs 8.847 +/-1.948 mm(3) [PBS]; P < .01). In addition, pasireotide-treated mice had fewer pancreatic NETs compared with PBS-treated mice (2.36 +/- 0.25 vs 3.72 +/- 0.32, respectively; P < .001), with decreased proliferation in pancreatic NETs (pasireotide, 0.35 +/- 0.03% vs PBS, 0.78 +/- 0.08%; P < .0001) and pituitary NETs (pasireotide, 0.73 +/-0.07% vs PBS, 1.81 +/- 0.15%; P < .0001), but increased apoptosis in pancreatic NETs (pasireotide, 0.42 +/- 0.05% vs PBS, 0.19 +/- 0.03%; P < .001) and pituitary NETs (pasireotide, 14.75 +/- 1.58% vs PBS, 2.35 +/- 0.44%; P < .001). Thus, pasireotide increased survival and inhibited pancreatic and pituitary NET growth, thereby indicating its potential as an anti-proliferative and pro-apoptotic therapy. FAU - Walls, Gerard V AU - Walls GV AD - Academic Endocrine Unit (G.V.W., M.S., B.S.S., K.E.L., R.V.T.), Radcliffe Department of Medicine, Oxford Centre for Diabetes, Endocrinology and Metabolism (OCDEM), University of Oxford, Churchill Hospital, Oxford, OX3 7LJ, United Kingdom; Nuffield Department of Surgical Sciences (G.V.W., B.S.S.), University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DU, United Kingdom; Department of Endocrinology (A.B.G.), OCDEM, Churchill Hospital, Oxford, OX3 7LJ, United Kingdom; and Novartis Pharma AG (H.A.S.), Novartis Institutes for Biomedical Research, Oncology, CH-4057 Basel, Switzerland. FAU - Stevenson, Mark AU - Stevenson M AD - Academic Endocrine Unit (G.V.W., M.S., B.S.S., K.E.L., R.V.T.), Radcliffe Department of Medicine, Oxford Centre for Diabetes, Endocrinology and Metabolism (OCDEM), University of Oxford, Churchill Hospital, Oxford, OX3 7LJ, United Kingdom; Nuffield Department of Surgical Sciences (G.V.W., B.S.S.), University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DU, United Kingdom; Department of Endocrinology (A.B.G.), OCDEM, Churchill Hospital, Oxford, OX3 7LJ, United Kingdom; and Novartis Pharma AG (H.A.S.), Novartis Institutes for Biomedical Research, Oncology, CH-4057 Basel, Switzerland. FAU - Soukup, Benjamin S AU - Soukup BS AD - Academic Endocrine Unit (G.V.W., M.S., B.S.S., K.E.L., R.V.T.), Radcliffe Department of Medicine, Oxford Centre for Diabetes, Endocrinology and Metabolism (OCDEM), University of Oxford, Churchill Hospital, Oxford, OX3 7LJ, United Kingdom; Nuffield Department of Surgical Sciences (G.V.W., B.S.S.), University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DU, United Kingdom; Department of Endocrinology (A.B.G.), OCDEM, Churchill Hospital, Oxford, OX3 7LJ, United Kingdom; and Novartis Pharma AG (H.A.S.), Novartis Institutes for Biomedical Research, Oncology, CH-4057 Basel, Switzerland. FAU - Lines, Kate E AU - Lines KE AD - Academic Endocrine Unit (G.V.W., M.S., B.S.S., K.E.L., R.V.T.), Radcliffe Department of Medicine, Oxford Centre for Diabetes, Endocrinology and Metabolism (OCDEM), University of Oxford, Churchill Hospital, Oxford, OX3 7LJ, United Kingdom; Nuffield Department of Surgical Sciences (G.V.W., B.S.S.), University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DU, United Kingdom; Department of Endocrinology (A.B.G.), OCDEM, Churchill Hospital, Oxford, OX3 7LJ, United Kingdom; and Novartis Pharma AG (H.A.S.), Novartis Institutes for Biomedical Research, Oncology, CH-4057 Basel, Switzerland. FAU - Grossman, Ashley B AU - Grossman AB AD - Academic Endocrine Unit (G.V.W., M.S., B.S.S., K.E.L., R.V.T.), Radcliffe Department of Medicine, Oxford Centre for Diabetes, Endocrinology and Metabolism (OCDEM), University of Oxford, Churchill Hospital, Oxford, OX3 7LJ, United Kingdom; Nuffield Department of Surgical Sciences (G.V.W., B.S.S.), University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DU, United Kingdom; Department of Endocrinology (A.B.G.), OCDEM, Churchill Hospital, Oxford, OX3 7LJ, United Kingdom; and Novartis Pharma AG (H.A.S.), Novartis Institutes for Biomedical Research, Oncology, CH-4057 Basel, Switzerland. FAU - Schmid, Herbert A AU - Schmid HA AD - Academic Endocrine Unit (G.V.W., M.S., B.S.S., K.E.L., R.V.T.), Radcliffe Department of Medicine, Oxford Centre for Diabetes, Endocrinology and Metabolism (OCDEM), University of Oxford, Churchill Hospital, Oxford, OX3 7LJ, United Kingdom; Nuffield Department of Surgical Sciences (G.V.W., B.S.S.), University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DU, United Kingdom; Department of Endocrinology (A.B.G.), OCDEM, Churchill Hospital, Oxford, OX3 7LJ, United Kingdom; and Novartis Pharma AG (H.A.S.), Novartis Institutes for Biomedical Research, Oncology, CH-4057 Basel, Switzerland. FAU - Thakker, Rajesh V AU - Thakker RV AD - Academic Endocrine Unit (G.V.W., M.S., B.S.S., K.E.L., R.V.T.), Radcliffe Department of Medicine, Oxford Centre for Diabetes, Endocrinology and Metabolism (OCDEM), University of Oxford, Churchill Hospital, Oxford, OX3 7LJ, United Kingdom; Nuffield Department of Surgical Sciences (G.V.W., B.S.S.), University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DU, United Kingdom; Department of Endocrinology (A.B.G.), OCDEM, Churchill Hospital, Oxford, OX3 7LJ, United Kingdom; and Novartis Pharma AG (H.A.S.), Novartis Institutes for Biomedical Research, Oncology, CH-4057 Basel, Switzerland. LA - eng GR - 913/DH_/Department of Health/United Kingdom GR - G0501780/MRC_/Medical Research Council/United Kingdom GR - G1000467/MRC_/Medical Research Council/United Kingdom GR - G9825289/MRC_/Medical Research Council/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20160318 PL - United States TA - Endocrinology JT - Endocrinology JID - 0375040 RN - 51110-01-1 (Somatostatin) RN - 98H1T17066 (pasireotide) SB - IM MH - Alleles MH - Animals MH - Apoptosis/drug effects MH - Cell Proliferation/drug effects MH - Disease Models, Animal MH - Disease Progression MH - Female MH - Mice MH - Multiple Endocrine Neoplasia/*drug therapy/genetics/pathology MH - Multiple Endocrine Neoplasia Type 1/*genetics MH - Neuroendocrine Tumors/*drug therapy/genetics/pathology MH - Somatostatin/*analogs & derivatives/pharmacology/therapeutic use PMC - PMC4870877 EDAT- 2016/03/19 06:00 MHDA- 2017/06/06 06:00 PMCR- 2016/03/18 CRDT- 2016/03/19 06:00 PHST- 2016/03/19 06:00 [entrez] PHST- 2016/03/19 06:00 [pubmed] PHST- 2017/06/06 06:00 [medline] PHST- 2016/03/18 00:00 [pmc-release] AID - EN-15-1965 [pii] AID - 10.1210/en.2015-1965 [doi] PST - ppublish SO - Endocrinology. 2016 May;157(5):1789-98. doi: 10.1210/en.2015-1965. Epub 2016 Mar 18.