Pim-1 Kinase Phosphorylates RUNX Family Transcription Factors and Enhances Their Activity

Overview

Journal BMC Cell Biol

Publisher Biomed Central

Specialty Cell Biology

Date 2006 May 11

PMID 16684349

Citations 27

Authors

Teija L T Aho

Jouko Sandholm

Katriina J Peltola

Yoshiaki Ito

Paivi J Koskinen

Affiliations

Soon will be listed here.

Abstract

Background: The pim family genes encode oncogenic serine/threonine kinases which in hematopoietic cells have been implicated in cytokine-dependent signaling as well as in lymphomagenesis, especially in cooperation with other oncogenes such as myc, bcl-2 or Runx family genes. The Runx genes encode alpha-subunits of heterodimeric transcription factors which regulate cell proliferation and differentiation in various tissues during development and which can become leukemogenic upon aberrant expression.

Results: Here we have identified novel protein-protein interactions between the Pim-1 kinase and the RUNX family transcription factors. Using the yeast two-hybrid system, we were able to show that the C-terminal part of human RUNX3 associates with Pim-1. This result was confirmed in cell culture, where full-length murine Runx1 and Runx3 both coprecipitated and colocalized with Pim-1. Furthermore, catalytically active Pim-1 kinase was able to phosphorylate Runx1 and Runx3 proteins and enhance the transactivation activity of Runx1 in a dose-dependent fashion.

Conclusion: Altogether, our results suggest that mammalian RUNX family transcription factors are novel binding partners and substrates for the Pim-1 kinase, which may be able to regulate their activities during normal hematopoiesis as well as in leukemogenesis.

Citing Articles

PIM1 signaling in immunoinflammatory diseases: an emerging therapeutic target.

Yang X, Liu C, Lei Y, Liu Z, Zhu B, Zhao D Front Immunol. 2024; 15:1443784.

PMID: 39372407 PMC: 11449710. DOI: 10.3389/fimmu.2024.1443784.

The RUNX/CBFβ Complex in Breast Cancer: A Conundrum of Context.

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Targeting Pim kinases in hematological cancers: molecular and clinical review.

Bellon M, Nicot C Mol Cancer. 2023; 22(1):18.

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RUNX Proteins as Epigenetic Modulators in Cancer.

Yi H, He Y, Zhu Q, Fang L Cells. 2022; 11(22).

PMID: 36429115 PMC: 9688118. DOI: 10.3390/cells11223687.

Inhibition of PIM1 attenuates the stem cell-like traits of breast cancer cells by promoting RUNX3 nuclear retention.

Liu H, Chen C, Ma D, Li Y, Yin Q, Li Q J Cell Mol Med. 2020; 24(11):6308-6323.

PMID: 32307917 PMC: 7294145. DOI: 10.1111/jcmm.15272.

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