Hybrid Cells Derived from Human Breast Cancer Cells and Human Breast Epithelial Cells Exhibit Differential TLR4 and TLR9 Signaling
نویسندگان
چکیده
TLRs are important receptors of cells of the innate immune system since they recognize various structurally conserved molecular patterns of different pathogens as well as endogenous ligands. In cancer, the role of TLRs is still controversial due to findings that both regression and progression of tumors could depend on TLR signaling. In the present study, M13SV1-EGFP-Neo human breast epithelial cells, MDA-MB-435-Hyg human breast cancer cells and two hybrids M13MDA435-1 and -3 were investigated for TLR4 and TLR9 expression and signaling. RT-PCR data revealed that LPS and CpG-ODN induced the expression of pro-inflammatory cytokines, like IFN-β, TNF-α, IL-1β and IL-6 in hybrid cells, but not parental cells. Interestingly, validation of RT-PCR data by Western blot showed detectable protein levels solely after LPS stimulation, suggesting that regulatory mechanisms are also controlled by TLR signaling. Analysis of pAKT and pERK1/2 levels upon LPS and CpG-ODN stimulation revealed a differential phosphorylation pattern in all cells. Finally, the migratory behavior of the cells was investigated showing that both LPS and CpG-ODN potently blocked the locomotory activity of the hybrid cells in a dose-dependent manner. In summary, hybrid cells exhibit differential TLR4 and TLR9 signaling.
منابع مشابه
Evaluation of Soluble Toll-Like Receptors 2, 4, 9 and Their Damps Signaling Molecules (HMGB1 & HSP70) in Breast Cancer Patients of Basrah Province
Introduction: Toll-Like Receptors (TLRs) are members of pattern recognition receptors that recognize various molecules, including pathogen-associated molecular patterns and dead-associated molecular patterns. These receptors are expressed by immune, non-immune, and tumor cells. Some TLRs are implicated in tumor progression, while others are involved in tumor suppression. Our study aimed to eval...
متن کاملAnalysis of epithelial mesenchymal transition markers in breast cancer cells in response to stromal cell-derived factor 1
Introduction: Metastasis is the main cause of cancer death; however, the underlying mechanisms of metastasis are largely unknown. The chemokine of stromal cell-derived factor 1 (SDF1) and the process of epithelial mesenchymal transition (EMT), both have been declared as important factors to promote cancer metastasis; however, Conspicuously, the relation between them has not been recognized well...
متن کاملEffects of combined 5-Fluorouracil and ZnO NPs on human breast cancer MCF-7 Cells: P53 gene expression, Bcl-2 signaling pathway, and invasion activity
Objective(s): The significant contribution of nanoparticles to cancer treatment has attracted therapeutic attention. The present study aimed to evaluate the synergistic effects of 5-fluorouracil (5-FU) and zinc oxide nanoparticles (ZnO NPs) as multimodal drug delivery on human breast cancer MCF-7 cells.Materials and Methods: In this in-vitro study, the impact of 5-FU and ZnO NPs in the sin...
متن کاملHuman Wharton’s jelly mesenchymal stem cells-derived secretome could inhibit breast cancer growth in vitro and in vivo
Objective(s): Controversial results have been reported regarding the anti-tumor properties of extracellular vesicles derived from mesenchymal stem cells (MSCs). The present study was conducted to evaluate whether secretome derived from Human Wharton’s jelly mesenchymal stem cells (hWJMSCs) may stimulate or inhibit breast cancer growth in vitro and in vivo.<st...
متن کاملSynthesis Pyrano [2,3-c] Pyrazole-based compounds to induce apoptosis by reducing the expression of anti-apoptotic Bcl-2 protein in human breast cancer MCF-7 cells
Aim: Bcl-2 is a potential target for tumor treatment. The inhibition of the Bcl-2 production is research target of attract in the field of anti-cancer drug development. Recently, the assessment of antitumor activity appeared to be promising for pyrazole derivatives. Therefore, this study was designed to investigate the anti-cancer effects of novel pyrazole derivatives (HN1and HN2.). Material an...
متن کامل