[Expression of cell cycle related proteins cyclin D1, p53 and p21WAF1/Cip1 in esophageal squamous cell carcinoma].
Dysregulation of cell cycle control, especially G1/S phase transition, is implicated in the pathogenesis of most human cancers, including esophageal squamous cell carcinoma (ESCC). However, the clinicopathological significance of aberrant expression of G1/S phase-related proteins in ESCC remains unclear. In the present study, cyclin D1, p21WAF1/Cip1 and p53 protein expression were examined in 148 ESCC cases using immunohistochemistry combined with tissue microarray. We then analyzed the correlations between their expression and clinicopathological parameters and found that overexpression of p53 was associated with lymph node metastasis (P=0.001). p21WAF1/Cip1 down-regulation was an independent prognostic factor by multivariate analysis (RR=0.418, P<0.001). Further more, array-CGH results revealed that cyclin D1 gene was amplified in 45.4% of ESCC patients. This study confirms that dysregulation of G1/S related genes is common in ESCC and reduced expression of p21WAF1/Cip1 protein can predict shorter overall survival time of patients with ESCC.
Lin
De-Chen
DC
State Key Laboratory of Molecular Oncology, Cancer Institute, Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100021, China. fulva2004@163.com
Shi
Zhi-Zhou
ZZ
Xue
Li-Yan
LY
Chen
Wei
W
Xu
Xin
X
Han
Ya-Ling
YL
Lv
Ning
N
Wang
Ming-Rong
MR
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002294:Carcinoma, Squamous Cell / Q000235:genetics / Q000378:metabolism* / Q000473:pathology; D055028:Comparative Genomic Hybridization; D019938:Cyclin D1 / Q000235:genetics / Q000378:metabolism*; D050759:Cyclin-Dependent Kinase Inhibitor p21 / Q000235:genetics / Q000378:metabolism*; D004938:Esophageal Neoplasms / Q000235:genetics / Q000378:metabolism* / Q000473:pathology; D005260:Female; D016193:G1 Phase; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D007150:Immunohistochemistry; D053208:Kaplan-Meier Estimate; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D011379:Prognosis; D016196:S Phase; D046888:Tissue Array Analysis; D016159:Tumor Suppressor Protein p53 / Q000235:genetics / Q000378:metabolism*
C493956:CDKN1A protein, human; D050759:Cyclin-Dependent Kinase Inhibitor p21; D016159:Tumor Suppressor Protein p53; D019938:Cyclin D1