Pathology & Oncology Research

, Volume 13, Issue 4, pp 284–289 | Cite as

Prognostic significance of loss of c-fos protein in gastric carcinoma

  • Seon Pil Jin
  • Ji Hun Kim
  • Min A Kim
  • Han-Kwang Yang
  • Hee Eun Lee
  • Hye Seung Lee
  • Woo Ho Kim
Article

Abstract

c-fos was first identified as a viral oncoprotein, and has been studied in terms of its oncogenic function in tumorigenesis. Many experimental and clinical data indicated that c-fos expression plays a role in the progression of several types of carcinomas. However, some recent studies challenge this view as they indicate that c-fos has tumor suppressor activity. In the present study, we assessed c-fos protein expression in 625 consecutive gastric cancers immunohistochemically, and analyzed its relationship with clinicopathologic factors and survival. We found that a loss of c-fos expression is correlated with a more advanced stage, lymph node metastasis, lymphatic invasion and shorter survival, indicating that c-fos expression in gastric cancer cells is lost during progression and that this loss is associated with a poor prognosis. The above findings suggest that loss of c-fos expression has tumor suppressor activity in gastric cancer and we suspect that this suppressor activity might be related to the pro-apoptotic function of c-fos.

Key words

stomach neoplasms immunohistochemistry survival analysis proto-oncogene protein c-fos tumor suppressor protein tissue array analysis 

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Copyright information

© Arányi Lajos Foundation 2007

Authors and Affiliations

  • Seon Pil Jin
    • 1
  • Ji Hun Kim
    • 3
  • Min A Kim
    • 1
  • Han-Kwang Yang
    • 2
  • Hee Eun Lee
    • 4
  • Hye Seung Lee
    • 4
  • Woo Ho Kim
    • 1
    • 3
  1. 1.Department of PathologySeoul National University College of MedicineSeoulKorea
  2. 2.Department of SurgerySeoul National University College of MedicineSeoul
  3. 3.Department of Cancer Research InstituteSeoul National University College of MedicineSeoul
  4. 4.Department of PathologySeoul National University Bundang HospitalSeongnamKorea

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