TY - JOUR
T1 - Islet Cells Serve as Cells of Origin of Pancreatic Gastrin-Positive Endocrine Tumors
AU - Bonnavion, Rémy
AU - Teinturier, Romain
AU - Jaafar, Rami
AU - Ripoche, Doriane
AU - Leteurtre, Emmanuelle
AU - Chen, Yuan-Jia
AU - Rehfeld, Jens F
AU - Lepinasse, Florian
AU - Hervieu, Valérie
AU - Pattou, François
AU - Vantyghem, Marie-Christine
AU - Scoazec, Jean-Yves
AU - Bertolino, Philippe
AU - Zhang, Chang Xian
N1 - Copyright © 2015, American Society for Microbiology. All Rights Reserved.
PY - 2015/10
Y1 - 2015/10
N2 - The cells of origin of pancreatic gastrinomas remain an enigma, since no gastrin-expressing cells are found in the normal adult pancreas. It was proposed that the cellular origin of pancreatic gastrinomas may come from either the pancreatic cells themselves or gastrin-expressing cells which have migrated from the duodenum. In the current study, we further characterized previously described transient pancreatic gastrin-expressing cells using cell lineage tracing in a pan-pancreatic progenitor and a pancreatic endocrine progenitor model. We provide evidence showing that pancreatic gastrin-expressing cells, found from embryonic day 12.5 until postnatal day 7, are derived from pancreatic Ptf1a(+) and neurogenin 3-expressing (Ngn3(+)) progenitors. Importantly, the majority of them coexpress glucagon, with 4% coexpressing insulin, indicating that they are a temporary subpopulation of both alpha and beta cells. Interestingly, Men1 disruption in both Ngn3 progenitors and beta and alpha cells resulted in the development of pancreatic gastrin-expressing tumors, suggesting that the latter developed from islet cells. Finally, we detected gastrin expression using three human cohorts with pancreatic endocrine tumors (pNETs) that have not been diagnosed as gastrinomas (in 9/34 pNETs from 6/14 patients with multiple endocrine neoplasia type 1, in 5/35 sporadic nonfunctioning pNETs, and in 2/20 sporadic insulinomas), consistent with observations made in mouse models. Our work provides insight into the histogenesis of pancreatic gastrin-expressing tumors.
AB - The cells of origin of pancreatic gastrinomas remain an enigma, since no gastrin-expressing cells are found in the normal adult pancreas. It was proposed that the cellular origin of pancreatic gastrinomas may come from either the pancreatic cells themselves or gastrin-expressing cells which have migrated from the duodenum. In the current study, we further characterized previously described transient pancreatic gastrin-expressing cells using cell lineage tracing in a pan-pancreatic progenitor and a pancreatic endocrine progenitor model. We provide evidence showing that pancreatic gastrin-expressing cells, found from embryonic day 12.5 until postnatal day 7, are derived from pancreatic Ptf1a(+) and neurogenin 3-expressing (Ngn3(+)) progenitors. Importantly, the majority of them coexpress glucagon, with 4% coexpressing insulin, indicating that they are a temporary subpopulation of both alpha and beta cells. Interestingly, Men1 disruption in both Ngn3 progenitors and beta and alpha cells resulted in the development of pancreatic gastrin-expressing tumors, suggesting that the latter developed from islet cells. Finally, we detected gastrin expression using three human cohorts with pancreatic endocrine tumors (pNETs) that have not been diagnosed as gastrinomas (in 9/34 pNETs from 6/14 patients with multiple endocrine neoplasia type 1, in 5/35 sporadic nonfunctioning pNETs, and in 2/20 sporadic insulinomas), consistent with observations made in mouse models. Our work provides insight into the histogenesis of pancreatic gastrin-expressing tumors.
KW - Animals
KW - Carcinogenesis
KW - Gastrins
KW - Humans
KW - Islets of Langerhans
KW - Mice, Inbred C57BL
KW - Mice, Knockout
KW - Multiple Endocrine Neoplasia
KW - Pancreatic Neoplasms
KW - Proto-Oncogene Proteins
U2 - 10.1128/mcb.00302-15
DO - 10.1128/mcb.00302-15
M3 - Journal article
C2 - 26169832
SN - 0270-7306
VL - 35
SP - 3274
EP - 3283
JO - Molecular and Cellular Biology
JF - Molecular and Cellular Biology
IS - 19
ER -