Mutation analysis of key genes in RAS/RAF and PI3K/PTEN pathways in Chinese patients with hepatocellular carcinoma

  • Authors:
    • Wenmin Hou
    • Jibin Liu
    • Peizhan Chen
    • Hui Wang
    • Bang‑Ce Ye
    • Fulin Qiang
  • View Affiliations

  • Published online on: June 13, 2014     https://doi.org/10.3892/ol.2014.2253
  • Pages: 1249-1254
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Abstract

The RAS/RAF and PI3K/PTEN signaling pathways play central roles in hepatocarcinogenesis. KRAS, NRAS, HRAS, BRAF, PIK3CA, PIK3R1 and PTEN are key cancer‑related genes in the RAS/RAF and PI3K/PTEN signaling pathways. Genetic alterations in these genes often lead to the dysregulation of the two cascades. Little is known regarding the frequency of hotspot mutations in these critical components among Chinese patients with hepatocellular carcinoma (HCC). In the current study, 57 somatic hotspot mutations in 36 HCCs samples collected from Chinese patients using direct DNA sequencing method were examined. Two cases of KRAS somatic mutations (KRAS codon 61; Gln to His) were identified among 36 HCCs (5.6%). However, no mutations were found in the NRAS, HRAS, BRAF, PIK3CA, PIK3R1 and PTEN genes. These findings indicated that point mutations in the KRAS gene, but not mutations in NRAS, HRAS, BRAF, PIK3CA, PIK3R1 and PTEN genes, at a somatic level contribute to the abnormal activation of the RAS/RAF and PI3K/PTEN pathways in HCC.
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September-2014
Volume 8 Issue 3

Print ISSN: 1792-1074
Online ISSN:1792-1082

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Spandidos Publications style
Hou W, Liu J, Chen P, Wang H, Ye BC and Qiang F: Mutation analysis of key genes in RAS/RAF and PI3K/PTEN pathways in Chinese patients with hepatocellular carcinoma. Oncol Lett 8: 1249-1254, 2014
APA
Hou, W., Liu, J., Chen, P., Wang, H., Ye, B., & Qiang, F. (2014). Mutation analysis of key genes in RAS/RAF and PI3K/PTEN pathways in Chinese patients with hepatocellular carcinoma. Oncology Letters, 8, 1249-1254. https://doi.org/10.3892/ol.2014.2253
MLA
Hou, W., Liu, J., Chen, P., Wang, H., Ye, B., Qiang, F."Mutation analysis of key genes in RAS/RAF and PI3K/PTEN pathways in Chinese patients with hepatocellular carcinoma". Oncology Letters 8.3 (2014): 1249-1254.
Chicago
Hou, W., Liu, J., Chen, P., Wang, H., Ye, B., Qiang, F."Mutation analysis of key genes in RAS/RAF and PI3K/PTEN pathways in Chinese patients with hepatocellular carcinoma". Oncology Letters 8, no. 3 (2014): 1249-1254. https://doi.org/10.3892/ol.2014.2253