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[Variation of STAT3 Gene in Myleproliferative Neoplasms and Its Significance]

Mei Tan1, Xi Luo1, Qiong Su1

  • 1Department of Pediatrics, Affiliated Hospital of Zunyi Medical college, Zunyi 563003, Guizhou Province, China.

Zhongguo Shi Yan Xue Ye Xue Za Zhi
|October 9, 2018
PubMed
Abstract

Insights

STAT3 gene mutations are common in myeloproliferative neoplasms (MPN) patients, particularly in chronic myeloid leukemia (CML). Specific STAT3 gene alleles correlate with MPN subtypes and JAK2V617F-negative status.

Area of Science:

  • Hematology
  • Molecular Biology
  • Oncology

Background:

  • Myeloproliferative neoplasms (MPN) are a group of clonal hematopoietic stem cell disorders.
  • The Signal Transducer and Activator of Transcription 3 (STAT3) gene plays a crucial role in cell signaling pathways relevant to cancer development.
  • Understanding genetic mutations in MPN is vital for diagnosis and treatment strategies.

Purpose of the Study:

  • To investigate STAT3 gene mutations and single nucleotide polymorphisms (SNPs) in MPN patients.
  • To determine the association between STAT3 gene alterations and specific MPN subtypes.
  • To explore the relationship between STAT3 gene variations and the JAK2V617F mutation status.

Main Methods:

  • Collected DNA from 147 MPN patients (including polycythaemia vera, essential thrombocythemia, primary myelofibrosis, and chronic myeloid leukemia) and 88 healthy controls.
  • Utilized allele-specific PCR to detect the JAK2V617F mutation.
  • Employed PCR amplification of STAT3 gene exons followed by DNA sequencing to identify mutations and the Rs2293152 SNP.

Main Results:

  • STAT3 gene mutations were identified in 8 (12.7%) of chronic myeloid leukemia (CML) patients, including missense (S629T) and synonymous mutations.
  • The G allele of STAT3 Rs2293152 was significantly more prevalent in CML patients compared to controls and other MPN subtypes (P<0.01).
  • The C allele of Rs2293152 was more frequent in polycythaemia vera (PV), essential thrombocythemia (ET), and primary myelofibrosis (PMF) patients (P<0.05).
  • A lower frequency of the Rs2293152 G allele was observed in JAK2V617F-negative MPN patients compared to controls and JAK2V617F-positive patients (P<0.01), suggesting a protective role.

Conclusions:

  • The STAT3 gene exhibits instability and a propensity for mutation in MPN patients.
  • STAT3 gene alleles at the Rs2293152 locus are associated with distinct MPN subtypes.
  • STAT3 gene variations may play a role in the pathogenesis of JAK2V617F-negative MPN.

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