M2 macrophages in the tumor microenvironment are important drivers of cancer metastasis. Exosomes play a critical role in the crosstalk between different cells by delivering microRNAs or other cargos. Whether exosomes derived from pro-tumorigenic M2 macrophages (M2-Exos) could modulate the metastatic behavior of renal cell carcinoma (RCC) is unclear. This study found that M2-Exos promotes migration and invasion in RCC cells. Inhibiting miR-21-5p in M2-Exos significantly reversed their pro-metastatic effects on RCC cells in vitro and in the avian embryo chorioallantoic membrane in vivo tumor model. We further found that the pro-metastatic mechanism of miR-21-5p in M2-Exos is by targeting PTEN-3'UTR to regulate PTEN/Akt signaling. Taken together, our results demonstrate that M2-Exos carries miR-21-5p promote metastatic features of RCC cells through PTEN/Akt signaling. Reversing this could serve as a novel approach to control RCC metastasis.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8949275 | PMC |
| http://dx.doi.org/10.3390/ijms23063005 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Ubiquitin specific peptidase 11 knockdown slows Huntington's disease progression via regulating mitochondrial dysfunction and neuronal damage depending on PTEN-mediated AKT pathway.
Mol Med
January 2025
Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, China.
Background: Mitochondrial dysfunction and neuronal damage are major sign of cytopathology in Huntington's disease (HD), a neurodegenerative disease. Ubiquitin specific peptidase 11 (USP11) is a deubiquitinating enzyme involved in various physiological processes through regulating protein degradation. However, its specific role in HD is unclear.
View Article and Find Full Text PDFCD63-high macrophage-derived exosomal miR-6876-5p promotes hepatocellular carcinoma stemness via PTEN/Akt-mediated EMT pathway.
Hepatol Commun
January 2025
Department of Gastroenterology, The First Hospital of China Medical University, Shenyang, PR China.
Objective: Accumulating evidence suggests that microRNAs derived from macrophage exosomes can regulate the stemness and progression of cancer. However, the interaction mechanisms between HCC cells and tumor-associated macrophages remain unclear.
Methods: Exosomes were extracted from control or CD63 overexpression macrophages and co-cultured with HCC cells.
Compound FLZ attenuates neuroinflammation through inhibiting Src/PTEN/Akt signaling pathway.
J Asian Nat Prod Res
January 2025
State Key Laboratory of Bioactive Substance and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
Compound FLZ has neuroprotective effects on Parkinson's disease (PD), while the precise mechanism remains unclear. In this study, we found that FLZ decreased PTEN/Akt activity in LPS-challenged BV2 cells. Neuroinflammatory responses suppressed by FLZ were abolished when PTEN or Src was inhibited.
View Article and Find Full Text PDFThe phosphodiesterase-4 inhibitor Zl-n-91 suppresses glioblastoma growth via EGR1/PTEN/AKT pathway.
Eur J Pharmacol
December 2024
The School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, PR China. Electronic address:
Glioblastoma multiforme (GBM) is a highly heterogeneous and aggressive brain tumor, which presents significant challenges for treatment in clinical settings. Phosphodiesterase 4 (PDE4) inhibitors can prevent the degradation of cAMP and have been used as a potential targeted therapeutic approach for different cancer types. However, their clinical use is restricted by side effects such as nausea and vomiting.
View Article and Find Full Text PDFExploring the anti‑inflammatory activity of boron compounds through the miR‑21/PTEN/AKT pathway in cecal ligation and puncture‑induced sepsis.
Mol Med Rep
February 2025
Department of Forensic Sciences and Toxicology, Faculty of Medicine, University of Crete, 71003 Heraklion, Greece.
The present study investigated the impact of boric acid (BA) and borax (BX) on markers of inflammation and modifications in miR‑21/PTEN/AKT pathway genes in the liver and kidney tissues of Sprague Dawley male rats with sepsis induced by cecal ligation and puncture (CLP). A total of 60 male Sprague Dawley rats were randomly divided into 6 groups, each containing 10 animals as follows: Control, CLP (where the model was created), 20 mg/kg BX (CLP + BX1), 40 mg/kg BX (CLP + BX2), 20 mg/kg BA (CLP + BA1) and 40 mg/kg BA (CLP + BA2). Liver and kidney tissues were analyzed for histopathological changes, immunopositivity for tumor necrosis factor‑α, interleukin (IL)‑6 and IL‑10, and gene expression of microRNA‑21 (miR‑21), phosphatase and tensin homolog (PTEN) and AKT.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!