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DNMTs-mediated SOCS3 methylation promotes the occurrence and development of AML

Xiaohui Zhang1, Kai Zhang2, Jing Zhang1

  • 1Department of Hematology, Handan Central Hospital, Handan, Hebei, China.

European Journal of Haematology
|November 11, 2023
PubMed
Abstract

Insights

SOCS3 gene methylation, mediated by DNMTs, promotes acute myeloid leukemia (AML) development. Restoring SOCS3 expression inhibits leukemia cell growth and increases apoptosis, suggesting SOCS3 as a potential AML biomarker.

Area of Science:

  • Molecular Biology
  • Oncology
  • Epigenetics

Background:

  • SOCS3 acts as a tumor suppressor by regulating the JAK/STAT signaling pathway.
  • Aberrant gene methylation is implicated in various cancers, including AML.

Purpose of the Study:

  • To investigate the role of SOCS3 methylation by DNMTs in AML pathogenesis.
  • To explore SOCS3 as a potential diagnostic and prognostic biomarker for AML.

Main Methods:

  • Analysis of SOCS3 expression and methylation in AML patient samples and cell lines.
  • Assessment of leukemia cell proliferation and apoptosis using CCK-8 and flow cytometry.
  • Manipulation of SOCS3 expression and DNMT activity via gene transfection, knockdown, and demethylation treatments.

Main Results:

  • Higher SOCS3 methylation rates and lower SOCS3 expression were observed in AML patients compared to healthy controls.
  • Increased expression of DNMTs (DNMT1, DNMT3a) and activated JAK/STAT signaling components (p-JAK2, p-STAT3, p-STAT5) were associated with SOCS3 methylation.
  • Restoring SOCS3 expression through demethylation, transfection, or DNMT3a knockdown reduced leukemia cell proliferation and enhanced apoptosis.

Conclusions:

  • DNMT-mediated SOCS3 methylation promotes AML development.
  • SOCS3 methylation status can serve as a potential biomarker for AML diagnosis and treatment efficacy evaluation.
Keywords:
DNMTsJAK2/STAT signaling pathwaySOCS3 methylationacute myeloid leukemia

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