[Hyperthermia enhanced the killing effect of 5-fluorocytosine on human colon cancer cell line transfected with cytosine deaminase gene]

[Hyperthermia enhanced the killing effect of 5-fluorocytosine on human colon cancer cell line transfected with cytosine deaminase gene] Research Abstract Details 

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[Hyperthermia enhanced the killing effect of 5-fluorocytosine on human colon cancer cell line transfected with cytosine deaminase gene] Abstract Text:

Jin-mao Li,Cheng-jin Li,Da-nian Lai,Xiao-jun Wang,Xian-li He,Guo-qiang Bao,Tao Wu,Ji-kai Yin,

OBJECTIVE: To investigate whether hyperthermia can enhance the killing effect of 5- fluorocytosine (5- FC) on human colorectal carcinoma cell lines SW480 transfected with carcinoembryonic antigen (CEA) tissue- specific cytosine deaminase (CD) gene in vitro,and study its mechanism. METHODS: Human colorectal carcinoma cell lines SW480 transfected with G1CEACDNa were cultured. The proliferated colonies were treated with the combined therapy of 5-FC and hyperthermia at a temperature of 43 degrees C for 30 min. After eight days, MTT was used to calculate the cellular survival rate,to analyze the killing effect of 5-FC combined with hyperthermia on SW480 cells transfected with CD gene. Flow cytometry was performed to analyze the cellular cycle and transmission electron microscope was used to observe the morphologic changes of SW480 cells after thermochemotherapy. RESULTS: Hyperthermia combined with 5-FC had an enhanced killing effect on SW480-CEACD cells than 5-FC alone (P< 0.05, t =2.403, n=9). Flow cytometry revealed that the proportion of S stage cell increased in the group treated with hyperthermia and 5- FC (P< 0.001, t =7.158, n=6). Transmission electron microscope showed apoptosis after thermo- chemotherapy. CONCLUSIONS: Hyperthermia can improve the anti- tumor effect of 5- FC on human colorectal carcinoma cell lines SW480 transfected with CD gene, and the cells were blocked at S stage of cellular cycle and apoptosis was induced following thermochemotherapy.

[Hyperthermia enhanced the killing effect of 5-fluorocytosine on human colon cancer cell line transfected with cytosine deaminase gene] Publishing Authors By Initials

JM Li,CJ Li,DN Lai,XJ Wang,XL He,GQ Bao,T Wu,JK Yin,

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[Hyperthermia enhanced the killing effect of 5-fluorocytosine on human colon cancer cell line transfected with cytosine deaminase gene] Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Zhonghua wei chang wai ke za zhi = Chinese journal

VOLUME: 9

Page Numbers: 234-7

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ISSN: 1671-0274

DAY: 24

MONTH: May

YEAR: 2006

[Hyperthermia enhanced the killing effect of 5-fluorocytosine on human colon cancer cell line transfected with cytosine deaminase gene] Information

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LANGUAGE: chi

NlmUniqueID: 101177990

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AFFILIATION: Department of General Surgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an 710038, China. LJMLYY@163.com

Country: China

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MEDLINETA: Zhonghua Wei Chang Wai Ke Za Z

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