[Inhibition of cellular proliferation by knockdown of MARCH6 gene expression in breast cancer cells].
To investigate effects of MARCH6 gene knockdown on MCF-7 cell proliferation and cell cycle.  Methods: 293T cells were transfected with MARCH6 shRNA lentivirus. Fluorescence microscope was used to observe and verify the transfection efficiency. The initial effect of the MARCH6 gene knockdown in MCF-7 cells was observed via fluorescence microscope. Real-time PCR and Western blot were used to detect the expression of MARCH6. MTT and BrdU assay were used to examine cell proliferation, and staining flow cytometry was used to analyze cycle distribution of MCF-7 cells.  Results: MARCH6 shRNA lentivirus was successfully transfected and about 80% of the cells expressed green fluorescent in comparison of the control. About 90% of the cells showed green fluorescence. The mRNA and protein in MCF-7 cells were transcription and expression of protein was significantly decreased after the transfection of MARCH6 shRNA lentivirus accompanied by a decrease in MCF-7 cell proliferation (P<0.01). Flow cytometry showed that the cell cycles were inhibited at the G1 phase and the proliferation index was significantly reduced.  Conclusion: Knockdown of MARCH6 gene by RNA interference inhibits the proliferation of MCF-7 cells, suggesting that the expression of MARCH6 promotes proliferation of breast cancer cells through regulation of the cell cycle.
Department of Oncology, Xiangya Hospital, Central South University, Changsha 410008, China.
Ni
N
Shen
Department of Oncology, Xiangya Hospital, Central South University, Changsha 410008, China.
Yujie
Y
Wang
Department of Oncology, Xiangya Hospital, Central South University, Changsha 410008, China.
Weibing
W
Zhou
Department of Oncology, Xiangya Hospital, Central South University, Changsha 410008, China.
Zhan
Z
Wang
Department of Oncology, Xiangya Hospital, Central South University, Changsha 410008, China.
Qingsong
Q
Tu
Department of Oncology, Xiangya Hospital, Central South University, Changsha 410008, China.
Wuzhong
W
Jiang
D000230:Adenocarcinoma / Q000235:genetics*; D001943:Breast Neoplasms / Q000235:genetics*; D002453:Cell Cycle; D002455:Cell Division; D049109:Cell Proliferation / Q000235:genetics*; D005260:Female; D016193:G1 Phase / Q000235:genetics*; D055785:Gene Knockdown Techniques; D006801:Humans; D006965:Hyperplasia; D016086:Lentivirus; D061986:MCF-7 Cells / Q000502:physiology*; D008565:Membrane Proteins / Q000502:physiology*; D034622:RNA Interference; D012333:RNA, Messenger; D034741:RNA, Small Interfering; D060888:Real-Time Polymerase Chain Reaction; D014162:Transfection; D044767:Ubiquitin-Protein Ligases / Q000502:physiology*
D008565:Membrane Proteins; D012333:RNA, Messenger; D034741:RNA, Small Interfering; C504816:MARCHF6 protein, human; D044767:Ubiquitin-Protein Ligases