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Progranulin Stimulates Proliferation of Mouse Pancreatic Islet Cells and Is Overexpressed in the Endocrine Pancreatic Tissue of an MEN1 Mouse Model
Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinsk cellbiologi.
Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Endokrin tumörbiologi. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Arbets- och miljömedicin.
Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Endokrin tumörbiologi.ORCID-id: 0000-0001-7046-9654
2016 (engelsk)Inngår i: Pancreas, ISSN 0885-3177, E-ISSN 1536-4828, Vol. 45, nr 4, s. 533-540Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

OBJECTIVES: Progranulin (PGRN) promotes cell growth and cell cycle progression in several cell types and contributes to tumorigenesis in diverse cancers. We have recently reported PGRN expression in islets and tumors developed in an MEN1 transgenic mouse. Here we sought to investigate PGRN expression and regulation after exposure to hypoxia as well as its effects on pancreatic islet cells and neuroendocrine tumors (NETs) in MEN1 mice.

METHODS: Gene and protein expression were analyzed by quantitative polymerase chain reaction, immunohistochemistry, and Western blot. We also investigated PGRN expression in samples from patients carrying pancreatic NETs associated or not with the multiple endocrine neoplasia 1 syndrome, using enzyme-linked immunosorbent assay and immunohistochemistry analysis.

RESULTS: Progranulin is upregulated in tumors and islets of the MEN1 mouse as well as in the serum of patients with pancreatic NETs associated with glucagonoma syndrome. In normal mice islets and pancreatic tumors, PGRN expression was strongly potentiated by hypoxia. Progranulin promotes cell proliferation in islet cells and βTC-6 cells, a process paralleled by activation of the mitogen-activated protein kinase signaling cascade.

CONCLUSIONS: Our findings identify PGRN as an effective inducer of pancreatic islet cell proliferation and a possible important factor for pancreatic endocrine tumor development.

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2016. Vol. 45, nr 4, s. 533-540
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Identifikatorer
URN: urn:nbn:se:uu:diva-273805DOI: 10.1097/MPA.0000000000000509ISI: 000372350500008PubMedID: 26495792OAI: oai:DiVA.org:uu-273805DiVA, id: diva2:895119
Forskningsfinansiär
Swedish Cancer Society, 110674Swedish Research Council, M-521-2011-3668Swedish Society for Medical Research (SSMF)Swedish Society of MedicineTilgjengelig fra: 2016-01-18 Laget: 2016-01-18 Sist oppdatert: 2018-01-10bibliografisk kontrollert

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