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Updated: Aug 7, 2026
A Reporter Assay to Analyze Intronic microRNA Maturation in Mammalian Cells
Published on: June 16, 2022
[Inhibition of the expression of p42MAPK in HeLa cell line by RNA interference]
Chen Huang1, Li-ying Liu, Tu-sheng Song
1Key Laboratory of Environment and Gene Related to Diseases, Ministry of Education, Medical School of Xi'an Jiaotong University, Xi'an 710061, China.
Objective:
To screen for siRNAs that inhibit the expression of p42(MAPK) in HeLa cell line.
Methods:
Three p42(MAPK) siRNAs and one random siRNA were synthesized using Silencer siRNA Construction Kit, and labeled with Cy-3 for measurement of transfection effect. SiRNAs were transfected into HeLa cells by Lipofectamin 2000. The expression of p42(MAPK) was analyzed by Western blot. The biological effect of siRNAs on HeLa cell growth was monitored by MTT and flow cytometry.
Results:
Two siRNAs (siRNA-2 and siRNA-3) among three tested were identified to be able to downregulate the p42(MAPK) expression. A concurrent growth retardation of HeLa cell line was observed in comparison with the control.
Conclusion:
Inhibition of p42(MAPK) expression with siRNA technique can inhibit the proliferation of HeLa cells.
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02:15Experimental RNAi
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This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...