Deficiency in Protein Tyrosine Phosphatase PTP1B shortens lifespan and leads to development of acute leukemia

Samantha Le Sommer, Nicola Morrice, Martina Pesaresi, Dawn Thompson, Mark A. Vickers, Graeme I. Murray, Nimesh Mody, Benjamin G. Neel, Kendra K. Bence, Heather M. Wilson (Lead / Corresponding author), Mirela Delibegović (Lead / Corresponding author)

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Abstract

Protein tyrosine phosphatase PTP1B is a critical regulator of signaling pathways controlling metabolic homeostasis, cell proliferation, and immunity. In this study, we report that global or myeloid-specific deficiency of PTP1B in mice decreases lifespan. We demonstrate that myeloid-specific deficiency of PTP1B is sufficient to promote the development of acute myeloid leukemia. LysM-PTP1B−/− mice lacking PTP1B in the innate myeloid cell lineage displayed a dysregulation of bone marrow cells with a rapid decline in population at midlife and a concomitant increase in peripheral blood blast cells. This phenotype manifested further with extramedullary tumors, hepatic macrophage infiltration, and metabolic reprogramming, suggesting increased hepatic lipid metabolism prior to overt tumor development. Mechanistic investigations revealed an increase in anti-inflammatory M2 macrophage responses in liver and spleen, as associated with increased expression of arginase I and the cytokines IL10 and IL4. We also documented STAT3 hypersphosphorylation and signaling along with JAK-dependent upregulation of antiapoptotic proteins Bcl2 and BclXL. Our results establish a tumor suppressor role for PTP1B in the myeloid lineage cells, with evidence that its genetic inactivation in mice is sufficient to drive acute myeloid leukemia.

Original languageEnglish
Pages (from-to)75-87
Number of pages14
JournalCancer Research
Volume78
Issue number1
Early online date9 Nov 2017
DOIs
Publication statusPublished - Jan 2018

Fingerprint

Protein Tyrosine Phosphatases
Leukemia
Myeloid Cells
Acute Myeloid Leukemia
Liver
Macrophages
Arginase
Neoplasms
Cell Lineage
Metabolic Networks and Pathways
Lipid Metabolism
Bone Marrow Cells
Interleukin-4
Interleukin-10
Immunity
Blood Cells
Homeostasis
Anti-Inflammatory Agents
Up-Regulation
Spleen

Keywords

  • PTP1B
  • lifespan
  • leukaemia
  • myeloid
  • STAT3

Cite this

Le Sommer, Samantha ; Morrice, Nicola ; Pesaresi, Martina ; Thompson, Dawn ; Vickers, Mark A. ; Murray, Graeme I. ; Mody, Nimesh ; Neel, Benjamin G. ; Bence, Kendra K. ; Wilson, Heather M. ; Delibegović, Mirela. / Deficiency in Protein Tyrosine Phosphatase PTP1B shortens lifespan and leads to development of acute leukemia. In: Cancer Research. 2018 ; Vol. 78, No. 1. pp. 75-87.
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Le Sommer, S, Morrice, N, Pesaresi, M, Thompson, D, Vickers, MA, Murray, GI, Mody, N, Neel, BG, Bence, KK, Wilson, HM & Delibegović, M 2018, 'Deficiency in Protein Tyrosine Phosphatase PTP1B shortens lifespan and leads to development of acute leukemia', Cancer Research, vol. 78, no. 1, pp. 75-87. https://doi.org/10.1158/0008-5472.CAN-17-0946

Deficiency in Protein Tyrosine Phosphatase PTP1B shortens lifespan and leads to development of acute leukemia. / Le Sommer, Samantha; Morrice, Nicola; Pesaresi, Martina; Thompson, Dawn; Vickers, Mark A.; Murray, Graeme I.; Mody, Nimesh; Neel, Benjamin G.; Bence, Kendra K.; Wilson, Heather M. (Lead / Corresponding author); Delibegović, Mirela (Lead / Corresponding author).

In: Cancer Research, Vol. 78, No. 1, 01.2018, p. 75-87.

Research output: Contribution to journalArticle

TY - JOUR

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AU - Le Sommer, Samantha

AU - Morrice, Nicola

AU - Pesaresi, Martina

AU - Thompson, Dawn

AU - Vickers, Mark A.

AU - Murray, Graeme I.

AU - Mody, Nimesh

AU - Neel, Benjamin G.

AU - Bence, Kendra K.

AU - Wilson, Heather M.

AU - Delibegović, Mirela

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