• 1.Department of General Surgery,Affiliated Union Hospital of Fujian Medical University,Fuzhou 350001,Fujian Province,China;;
  • 2. Department of Emergency Surgery,Affiliated Union Hospital of Fujian Medical University,Fuzhou 350001,Fujian Province,China;
LU Xingrong, Email: lynxlxr18@163.com.cn
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Objective  To research the expressions of miR-196b and HoxB8 mRNA in colorectal cancer and their
correlation with clinicopathologic features,and to explore the relationship between miR-196b and HoxB8 in vivo.
Methods  Expressions of RNA (including miR-196b and HoxB8 mRNA) and HoxB8 protein were detected respectively by using quantitative real-time reverse transcriptase PCR and Western blot in 30 cases of colorectal cancer and corresponding normal
mucous membrane tissues.
Results  In colorectal cancer tissues,expressions of miR-196b and HoxB8 mRNA were higher than those of the corresponding normal mucous membrane tissues (P<0.05). Expression of miR196b mRNA was assoc-iated with lymph node metastasis,neoplasm stages (Ⅰ+ⅡandⅢ+Ⅳ),and distant metastasis (P<0.05),on the other
hand,no significant differences were observed regarding tumor site,size,gross type,depth of invasion,tissue differentiation,
age,and sex (P>0.05). Expression of HoxB8 mRNA was no significant differences concerning lymph node metastasis,
tumor stages (Ⅰ+Ⅱ,Ⅲ+Ⅳ),distant metastasis,tumor site,size,gross type,depth of invasion,tissue differentiation,age,and sex (P>0.05). The expression of miR-196b mRNA was negatively correlated with HoxB8 mRNA expression (r=-0.458,P<0.05),and HoxB8 protein expression with no obvious correlation (r=-0.236,P>0.05) in colorectal cancer tissues.
Conclusions  The expressions of miR-196b and HoxB8 mRNA in colorectal cancer tissues are higher,the high expression of miR-196b mRNA is related to the tumorigenesis and progression of colorectal cancer as well as correlated with prognosis in colorectal cancer. The miR-196b inhibits the expression of HoxB8 mRNA by binding to the
3′-UTR of target HoxB8 mRNA.

Citation: LAN Hongbo,PAN Jie,LU Xingrong,CHI Pan.. Expressions and Significance of miR-196b mRNA and HoxB8 mRNA in Human Colorectal Cancer. CHINESE JOURNAL OF BASES AND CLINICS IN GENERAL SURGERY, 2013, 20(4): 400-405. doi: Copy

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