Journal
MEDICAL ONCOLOGY
Volume 27, Issue 1, Pages 134-144Publisher
HUMANA PRESS INC
DOI: 10.1007/s12032-009-9184-1
Keywords
Nasopharyngeal carcinoma; Stroma; Laser capture microdissection; Two-dimensional gel electrophoresis; Mass spectrometry
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Funding
- Science and Technology Committee of Hunan Province, China [04XK1001, 06SK2004]
- National Natural Sciences Foundation of China [30500558, 30670990]
- New Century Excellent Talents in University (NCET)
- National Natural Science Foundation of China [30670990, 30871189]
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The stroma surrounding cancer cell population is increasingly recognized as playing an important role in cancer proliferation, invasion, and metastasis. To identify the stromal proteins involved in nasopharyngeal carcinoma (NPC) carcinogenesis, differences in protein expression of the stroma from NPC and normal nasopharyngeal epithelium tissues (NNET) were assessed using a comparative proteomic approach combined with laser capture microdissection (LCM). LCM was performed to purify stromal cells from NPC and NNET, respectively. Proteins between the pooled microdissected tumor and normal stroma were separated by two-dimensional electrophoresis (2-DE) and differential proteins were identified by mass spectrometry (MS). Sixty differential proteins between normal stroma (NS) and tumor stroma (TS) were identified, and the expression of CapG protein was further confirmed by western blotting and immunohistochemical analysis. Our results will be helpful to study the role of stroma in the NPC carcinogenesis and may provide helpful clues for pathogenesis, early diagnosis, and progression of NPC.
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