scholarly journals Correction to: M2 macrophage-derived exosomal microRNAs inhibit cell migration and invasion in gliomas through PI3K/AKT/mTOR signaling pathway

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Jie Yao ◽  
Zefen Wang ◽  
Yong Cheng ◽  
Chao Ma ◽  
Yahua Zhong ◽  
...  
Keyword(s):  
Cell Migration ◽  
Signaling Pathway ◽  
Mtor Signaling ◽  
Migration And Invasion ◽  
M2 Macrophage ◽  
Mtor Signaling Pathway ◽  
Cell Migration And Invasion

An amendment to this paper has been published and can be accessed via the original article.

scholarly journals M2 macrophage-derived exosomal microRNAs inhibit cell migration and invasion in gliomas through PI3K/AKT/mTOR signaling pathway

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Jie Yao ◽  
Zefen Wang ◽  
Yong Cheng ◽  
Chao Ma ◽  
Yahua Zhong ◽  
...  
Keyword(s):  
Cell Migration ◽  
Western Blot ◽  
Signaling Pathway ◽  
Target Gene ◽  
Glioma Cells ◽  
Mtor Signaling ◽  
Migration And Invasion ◽  
M2 Macrophage ◽  
Mtor Signaling Pathway ◽  
Cell Migration And Invasion

Abstract Background Glioma, the most common primary brain tumor, account Preparing figures for 30 to 40% of all intracranial tumors. Herein, we aimed to study the effects of M2 macrophage-derived exosomal microRNAs (miRNAs) on glioma cells. Methods First, we identified seven differentially expressed miRNAs in infiltrating macrophages and detected the expression of these seven miRNAs in M2 macrophages. We then selected hsa-miR-15a-5p (miR-15a) and hsa-miR-92a-3p (miR-92a) for follow-up studies, and confirmed that miR-15a and miR-92a were under-expressed in M2 macrophage exosomes. Subsequently, we demonstrated that M2 macrophage-derived exosomes promoted migration and invasion of glioma cells, while exosomal miR-15a and miR-92a had the opposite effects on glioma cells. Next, we performed the target gene prediction in four databases and conducted target gene validation by qRT-PCR, western blot and dual luciferase reporter gene assays. Results The results revealed that miR-15a and miR-92a were bound to CCND1 and RAP1B, respectively. Western blot assays demonstrated that interference with the expression of CCND1 or RAP1B reduced the phosphorylation level of AKT and mTOR, indicating that both CCND1 and RAP1B can activate the PI3K/AKT/mTOR signaling pathway. Conclusion Collectively, these findings indicate that M2 macrophage-derived exosomal miR-15a and miR-92a inhibit cell migration and invasion of glioma cells through PI3K/AKT/mTOR signaling pathway.

scholarly journals M2 macrophage-derived exosomal microRNAs inhibit cell migration and invasion in gliomas through PI3K/AKT/mTOR signaling pathway

2020 ◽  
Author(s):  
Jie Yao ◽  
Ze-Fen Wang ◽  
Yong Cheng ◽  
Tian Lan ◽  
Chao Ma ◽  
...  
Keyword(s):  
Cell Migration ◽  
Western Blot ◽  
Signaling Pathway ◽  
Target Gene ◽  
Glioma Cells ◽  
Mtor Signaling ◽  
Migration And Invasion ◽  
M2 Macrophage ◽  
Mtor Signaling Pathway ◽  
Cell Migration And Invasion

Abstract Background: Glioma, the most common primary brain tumor, account Preparing figures s for 30% to 40% of all intracranial tumors. Herein, we aimed to study the effects of M2 macrophage-derived exosomal microRNAs (miRNAs) on glioma cells. Methods: First, we identified seven differentially expressed miRNAs in infiltrating macrophages and detected the expression of these seven miRNAs in M2 macrophages. We then selected hsa-miR-15a-5p (miR-15a) and hsa-miR-92a-3p (miR-92a) for follow-up studies, and confirmed that miR-15a and miR-92a were under-expressed in M2 macrophage exosomes. Subsequently, we demonstrated that M2 macrophage-derived exosomes promoted migration and invasion of glioma cells, while exosomal miR-15a and miR-92a had the opposite effects on glioma cells. Next, we performed the target gene prediction in four databases and conducted target gene validation by qRT-PCR, western blot and dual luciferase reporter gene assays. Results: The results revealed that miR-15a and miR-92a were bound to CCND1 and RAP1B, respectively. Western blot assays demonstrated that interference with the expression of CCND1 or RAP1B reduced the phosphorylation level of AKT and mTOR, indicating that both CCND1 and RAP1B can activate the PI3K/AKT/mTOR signaling pathway. Conclusion: Collectively, these findings indicate that M2 macrophage-derived exosomal miR-15a and miR-92a inhibit cell migration and invasion of glioma cells through PI3K/AKT/mTOR signaling pathway.

scholarly journals M2 macrophage-derived exosomal microRNAs inhibit cell migration and invasion in gliomas through PI3K/AKT/mTOR signaling pathway

2021 ◽  
Author(s):  
Jie Yao ◽  
Ze-Fen Wang ◽  
Yong Cheng ◽  
Tian Lan ◽  
Chao Ma ◽  
...  
Keyword(s):  
Cell Migration ◽  
Western Blot ◽  
Signaling Pathway ◽  
Target Gene ◽  
Glioma Cells ◽  
Mtor Signaling ◽  
Migration And Invasion ◽  
M2 Macrophage ◽  
Mtor Signaling Pathway ◽  
Cell Migration And Invasion

Abstract Background: Glioma, the most common primary brain tumor, account Preparing figures s for 30% to 40% of all intracranial tumors. Herein, we aimed to study the effects of M2 macrophage-derived exosomal microRNAs (miRNAs) on glioma cells. Methods: First, we identified seven differentially expressed miRNAs in infiltrating macrophages and detected the expression of these seven miRNAs in M2 macrophages. We then selected hsa-miR-15a-5p (miR-15a) and hsa-miR-92a-3p (miR-92a) for follow-up studies, and confirmed that miR-15a and miR-92a were under-expressed in M2 macrophage exosomes. Subsequently, we demonstrated that M2 macrophage-derived exosomes promoted migration and invasion of glioma cells, while exosomal miR-15a and miR-92a had the opposite effects on glioma cells. Next, we performed the target gene prediction in four databases and conducted target gene validation by qRT-PCR, western blot and dual luciferase reporter gene assays. Results: The results revealed that miR-15a and miR-92a were bound to CCND1 and RAP1B, respectively. Western blot assays demonstrated that interference with the expression of CCND1 or RAP1B reduced the phosphorylation level of AKT and mTOR, indicating that both CCND1 and RAP1B can activate the PI3K/AKT/mTOR signaling pathway. Conclusion: Collectively, these findings indicate that M2 macrophage-derived exosomal miR-15a and miR-92a inhibit cell migration and invasion of glioma cells through PI3K/AKT/mTOR signaling pathway.

T-cadherin deficiency promotes endometriosis progression through the PI3K/AKT/mTOR signaling pathway

2020 ◽  
Author(s):  
yutao guan ◽  
Fu-bin Zhang ◽  
Yan-qing Huang ◽  
Ling-ling Zhou ◽  
Wei-feng Li ◽  
...  
Keyword(s):  
Cell Migration ◽  
Protein Expression ◽  
Signaling Pathway ◽  
Benign Disease ◽  
Mtor Signaling ◽  
Migration And Invasion ◽  
Mtor Signaling Pathway ◽  
Cell Migration And Invasion ◽  
Female Patients ◽  
Mrna And Protein Expression

Abstract Background: Endometriosis is a progressive and benign disease characterized by the presence of endometrial glands and stroma tissue outside of the uterine cavity. Though endometriosis is a benign disease, it has the characteristics of malignant tumour growth. Abnormal expression of T-cadherin is involved in the occurrence and progression of many tumours. We aimed to investigate whether T-cadherin promotes the migration and invasion of endometriosis cells through the PI3K/AKT/mTOR signaling pathway. Methods: Ectopic and eutopic endometrial samples from 62 female patients with endometriosis and endometrial samples from 51 female patients without endometriosis were collected. The immortalized endometrial stromal cell line hEM15A was cultured. Real-time RT-PCR, immunohistochemistry and Western blot were used to detect the expression of T-cadherin, phospho-PI3K/Akt/mTOR and matrix metalloproteinase 2 (MMP-2). Transfection technology was employed to upregulate T-cadherin expression. The migration and invasion abilities of hEM15A cells were measured by the transwell assay with uncoated or Matrigel-coated membranes. Results: The mRNA and protein expression of T-cadherin was significantly decresed in the ectopic tissues of the patients with endometriosis, while the mRNA and protein expression in the eutopic endometrial tissues of the same patients did not significantly differ from that in the patients without endometriosis. The migration and invasion ability and phospho-PI3K/Akt/mTOR and MMP-2 expression levels were decreased in hEM15A cells with high T-cadherin expression compared with the corresponding parameters in the normal control group. However, everolimus and BEZ235 inhibited cell migration and invasion in cells with low T-cadherin expression, and weakened overexpression of T‑cadherin significantly attenuated MMP-2 protein expression. Conclusion: Loss of T-cadherin promotes cell migration and invasion in endometriosis via the PI3K/AKT/mTOR signalling pathway.

scholarly journals Exploring the Mechanism of Flaccidoxide-13-Acetate in Suppressing Cell Metastasis of Hepatocellular Carcinoma

Marine Drugs ◽  
2020 ◽  
Vol 18 (6) ◽  
pp. 314
Author(s):  
Yu-Jen Wu ◽  
Wen-Chi Wei ◽  
Guo-Fong Dai ◽  
Jui-Hsin Su ◽  
Yu-Hwei Tseng ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Cell Migration ◽  
Signaling Pathway ◽  
Gelatin Zymography ◽  
Mtor Signaling ◽  
Migration And Invasion ◽  
Mtor Signaling Pathway ◽  
Mesenchymal Transition ◽  
Cell Metastasis ◽  
Study Results

Hepatocellular carcinoma (HCC) is the most common liver or hepatic cancer, accounting for 80% of all cases. The majority of this cancer mortality is due to metastases, rather than orthotopic tumors. Therefore, the inhibition of tumor metastasis is widely recognized as the key strategy for successful intervention. A cembrane-type diterpene, flaccidoxide-13-acetate, isolated from marine soft coral Sinularia gibberosa, has been reported to have inhibitory effects against RT4 and T24 human bladder cancer invasion and cell migration. In this study, we investigated its suppression effects on tumor growth and metastasis of human HCC, conducting Boyden chamber and Transwell assays using HA22T and HepG2 human HCC cell lines to evaluate invasion and cell migration. We utilized gelatin zymography to determine the enzyme activities of matrix metalloproteinases MMP-2 and MMP-9. We also analyzed the expression levels of MMP-2 and MMP-9. Additionally, assays of tissue inhibitors of metalloproteinase-1/2 (TIMP-1/2), the focal adhesion kinase (FAK)/phosphatidylinositide-3 kinases (PI3K)/Akt/mammalian target of the rapamycin (mTOR) signaling pathway, and the epithelial-mesenchymal transition (EMT) process were performed. We observed that flaccidoxide-13-acetate could potentially inhibit HCC cell migration and invasion. We postulated that, by inhibiting the FAK/PI3K/Akt/mTOR signaling pathway, MMP-2 and MMP-9 expressions were suppressed, resulting in HCC cell metastasis. Flaccidoxide-13-acetate was found to inhibit EMT in HA22T and HepG2 HCC cells. Our study results suggested the potential of flaccidoxide-13-acetate as a chemotherapeutic candidate; however, its clinical application for the management of HCC in humans requires further research.

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