Résumé
@# Objective: To evaluate the expression of leucine zipper tumor suppressor 2 (LZTS2) in human breast cancer tissues and cell lines, and to investigate the effects and mechanisms of LZTS2 over-expression on proliferation, invasion and epithelial-mesenchymal transition (EMT) of breast cancer cells. Methods: Fifty pairs of cancerous tissues and para-cancerous tissues resected from breast cancer patients in Department of Breast Surgery of Kaifeng Central Hospital from January, 2016 to December, 2016, as well as breast cancer cell lines (MCF-7, MDA-MB-231, MDA-MB-468) and normal mammary epithelial HBL-100 cells were collected for this study; and Real-time quantitative PCR (qPCR) and Western blotting were used to determine the mRNA and protein expressions of LZTS2 in collected tissues and cell lines. MCF-7 cells were transfected with pcDNA-LZTS2 or pcDNA3.1 (negative control) using lipofectamineTM 2000, and the protein expression of LZTS2 at 49-72 h after transfection was measured by Western blotting; Then, the effects of LZTS2 over-expression on proliferation, migration and invasion of MCF-7 cells were detected by MTT assay and Transwell assay, respectively; Furthermore, Western blotting was performed to detect the expressions of EMT associated proteins (Cyclin D1, Vimentin, Ncadherin, E-cadherin) and PI3K/AKT signaling pathways-related molecules. Results: The mRNA and protein expressions of LZTS2 were down-regulated in breast cancerous tissues and cell lines (MCF-7, MDA-MB-468 and MDA-MB-231) as compared with paired para-cancerous tissues or normal mammary epithelial HBL-100 cells (P<0.05 or P<0.01). Compared with and blank control or pcDNA3.1 group, the protein expression of LZTS2 in MCF-7 cells of pcDNA-LZTS2 group significantly increased (P<0.01), while the proliferation, migration and invasion of MCF-7 cells significantly reduced (P<0.05 or P<0.01). In addition, forced expression of LZTS2 significantly down-regulated the protein expressions of Cyclin D1, Vimentin and N-cadherin (P<0.05 or P<0.01) but up-regulated the expression of E-cadherin in MCF-7 cells (P<0.01), indicating LZTS2 over-expression suppressed PI3K / AKT signaling pathway through inhibiting the expression p-PI3K and p-AKT. Conclusion: The findings collectively demonstrated that the expression of LZTS2 was decreased in breast cancer, and over-expression of LZTS2 efficiently inhibited the proliferation, migration and invasion of breast cancer cells, which might be related with the suppression of PI3K/AKT signaling pathway involved in EMT.
Résumé
The aim of this study was to observe the effect of Zhuang medicine medicated thread moxibustion on protomics in serum of postherpetic neuralgia patient with herpes zoster and discuss the action mechanism of Zhuang medicine medicated thread moxibustion in treating postherpetic neuralgia [PHN]
Methods: patients were divided into three groups in clinic, namely the pre-treatment group [n=20], post-treatment group [n=20] and healthy group [n=20], patients meeting corresponding conditions were recruited in the voluntary principle to accept PHN pain evaluation and protomics tests respectively
Results: compared with the pre-treatment group, visual analogue scale [VAS] in posttreatment group obviously reduced, protomics indexes like MFG-ES, Lymphotoxin beta/TNFSF3, IL-19, Neuritin, NCAM-1/CD56 and PECAM-1/CD31 obviously changed
Conclusions: the Zhuang medicine medicated thread moxibustion can treat the postherpetic neuralgia patient with herpes zoster, its internal mechanism is to possibly change the protomics indexes like MFG-ES, Lymphotoxin beta/TNFSF3, IL-19, Neuritin, NCAM-1/CD56 and PECAM-1/CD31