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Updated: Dec 27, 2025

Proliferation and Differentiation of Murine Myeloid Precursor 32D/G-CSF-R Cells
10:21

Proliferation and Differentiation of Murine Myeloid Precursor 32D/G-CSF-R Cells

Published on: February 21, 2018

10.3K

Kras promotes myeloid differentiation through Wnt/β-catenin signaling

Noriko Yokoyama1, Yeon-Jeong Kim2, Yoshio Hirabayashi1,3

  • 1Institute for Environmental and Gender Specific Medicine Juntendo University Graduate School of Medicine Urayasu Chiba Japan.

FASEB Bioadvances
|March 4, 2020
PubMed

Insights

Kras positively regulates myeloid cell differentiation by interacting with the Wnt/β-catenin pathway. This study reveals Kras acts as a tumor suppressor in this process.

Area of Science:

  • Molecular Biology
  • Cell Signaling
  • Cancer Research

Background:

  • The function of wild-type Kras in myeloid cell differentiation is not fully understood.
  • Kras, a small GTPase, typically inactivates Ras growth-promoting signaling.
  • Understanding Kras's role is crucial for myeloid leukemia research.

Purpose of the Study:

  • To investigate the role of Kras in dimethyl sulfoxide (DMSO)-induced differentiation of human acute myeloid leukemia HL-60 cells.
  • To elucidate the regulatory mechanism involving Kras and its downstream signaling pathways.
  • To determine if Kras acts as a tumor suppressor during myeloid cell differentiation.

Main Methods:

  • Utilized HL-60 cell line for differentiation studies.
  • Assessed Kras activity and its modulation by DMSO.
  • Inhibited Kras and GSK3β (glycogen synthase kinase 3 beta) to observe effects on differentiation markers like CD11b.
  • Analyzed the Wnt/β-catenin pathway components (β-catenin, Tcf) and transcription factors (C/EBPα, C/EBPɛ).

Main Results:

  • Kras positively regulates DMSO-induced differentiation of HL-60 cells, with increased Kras activity upon DMSO treatment.
  • Inhibition of Kras attenuated CD11b expression, indicating its essential role.
  • GSK3β was identified as a downstream signal of Kras; its inhibition enhanced CD11b expression and nuclear accumulation of β-catenin and Tcf.
  • Wnt/β-catenin pathway activation was confirmed to be involved in HL-60 cell differentiation.

Conclusions:

  • Kras interacts with the Wnt/β-catenin pathway during DMSO-induced granulocytic differentiation of HL-60 cells.
  • Kras functions as a tumor suppressor in the context of myeloid cell differentiation.
  • These findings provide novel insights into the regulation of myeloid differentiation and potential therapeutic targets.
Keywords:
GSK3βHL‐60 cell differentiationWnt/β-catenintumor suppressorwild‐type Kras

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