[Antisense to CDK4 inhibits the growth of human colon cancer cells HT29].
OBJECTIVE
Antisense CDK4 was transfected into human colorectal cancer cells HT29 to examine the effect of it on the growth and proliferation of HT29 cells.


METHODS
Antisense CDK4 transfected the HT29 cells with lipofectamine. The transfected effects were verified by the Northern blot, Western blot, morphological method, flow cell measure, etc.


RESULTS
The transformant cells showed the expression of exogenous antisense CDK4 mRNA, and downmodulation of endogenous CDK4 mRNA expression and inhibition of its protein synthesis. The transformant cells exhibited the partial reversion of the malignant phenotype and behavior, and that the cell growth and the ability of colony formation in soft agar were inhibited. The arrest of G1 phase was also revealed. the apoptosis rate is higher in HT29-asCDK4.


CONCLUSIONS
The antisense CDK4 gene can inhibited the cell growth and proliferation, and induce the cell apoptosis. It might provide a new way to gene therapy of the colorectal carcinoma.
Ye
Ying-jiang
YJ
Surgical Oncology Laboratory, People's Hospital Peking University, Beijing 100044, China.
Zhu
Xue-guang
XG
Wang
Shan
S
Wang
Yong-chao
YC
Sang
Jian-li
JL