Effect of hypoxia on adhesion and invasion of human cervical cancer cell HeLa
- VernacularTitle:低氧对宫颈癌HeLa细胞黏附及侵袭能力的影响
- Author:
Shuang LIN
;
Li LI
;
Ping YI
- Publication Type:Journal Article
- Keywords:
hypoxia;
hypoxia inducible factor-1?;
cancer;
invasion
- From:Journal of Third Military Medical University
2003;0(18):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the potential effect of hypoxia on adhersion and invasion of human cervical carcinoma cells HeLa. Methods Reverse transcription-polymerase chain reaction (RT-PCR) was used to investigate the level of HIF-1? mRNA and E-cadherin mRNA of HeLa cells cultured under normoxia, 5%O2, 3%O2, 1%O2. The invasiveness of HeLa cells was investigated by transwell chamber assay. Results Under the condition of normoxia, 5%O2, 3%O2 and 1%O2, the optical density ratio of HIF-1? mRNA/?-actin was (0.423?0.116), (0.764?0.111), (1.687?0.126) and (0.215?0.099), showing that the level of HIF-1? mRNA had a tendency of first inceasing and then decreasing with the decreasing oxygen content. The optical density ratio of E-cadherin/?-actin was (1.045?0.171), (0.719?0.114), (0.386?0.105) and (0.157?0.063), showing a decreasing tendency with the decreasing of oxygen content. The invasiveness of HeLa cells was (112.5?20.7), (254.3?27.5), (333.6?45.2) and (124.5?24.6), showing that the invasiveness of HeLa cells had a tendency of first inceasing and then decreasing with the decreasing oxygen content. Conclusion Moderate hypoxia up-regulates the mRNA levels of HIF-1?, and down-regulates the mRNA levels of E-cadherin, and enhances the tumor invasiveness. The possible mechanism is the increasing mRNA levels of HIF-1?.
