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EGFR-activated cancer-associated myofibroblasts promote metastasis in pancreatic cancer

ABSTRACT: EGFR-activated cancer-associated myofibroblasts promote metastasis in pancreatic cancer

PROVIDER: PRJNA1020418 | ENA |

REPOSITORIES: ENA

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2013-06-20 | PRD000744 | Pride

Secretomes of Cancer-Associated Myofibroblasts and Normal Tissue Myofibroblasts in hypoxia and normoxia C4PR_LIV

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EGFR-activated cancer-associated myofibroblasts promote metastasis in pancreatic cancer

Project description:This SuperSeries is composed of the SubSeries listed below.

2023-11-30 | GSE243892 | GEO

Myeloid-derived suppressor cells promote lung cancer metastasis

Project description:Myeloid-derived suppressor cells (MDSCs) suppress antitumor immune activities and facilitate cancer progression. Although the concept of immunosuppressive MDSCs is well established, the mechanism that MDSCs regulate non-small cell lung cancer (NSCLC) progression through the paracrine signals is still lacking. Here, we reported that the infiltration of MDSCs within NSCLC tissues were associated with the progression of cancer status, and were positively correlated with the Patient-derived xenograft (PDX) model establishment, and poor patient prognosis. Intratumoral MDSCs directly promoted NSCLC metastasis and highly expressed chemokines that promote NSCLC cells invasion, including CCL11. CCL11 was capable of activating the AKT and ERK signaling pathways to promote NSCLC metastasis through the epithelial-mesenchymal transition (EMT) process. Moreover, high expression of CCL11 was associated with a poor prognosis in lung cancer as well as other types of cancer. Our findings underscore that MDSCs produce CCL11 to promote NSCLC metastasis via activation of ERK and AKT signaling and induction of EMT, suggesting that the MDSCs-CCL11-ERK/AKT-EMT axis contains potential targets for NSCLC metastasis treatment.

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YTHDF3 Induces the Translation of m6A-enriched Metastasis-associated Gene Transcripts to Promote Breast Cancer Brain Metastasis [m6A-seq]

Project description:Brain metastasis is a major cause of cancer mortality, but its molecular mechanisms are severely understudied. We found that YTHDF3 overexpression clinically correlates with brain metastases in breast cancer patients and is required for brain metastasis. Silencing YTHDF3 suppressed the brain metastasis of breast cancer cells in vitro and in vivo. Integrated transcriptome and m6A-seq analysis revealed alter expression of selected YTHDF3 target genes, including ST6GALNAC5, GJA1, and EGFR by promoting m6A-dependent translation of these target transcripts. Our work uncovers an essential role of YTHDF3 in controlling the interaction between cancer cells and brain microenvironment, thereby gaining brain metastatic competence.

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YTHDF3 Induces the Translation of m6A-enriched Metastasis-associated Gene Transcripts to Promote Breast Cancer Brain Metastasis [RIP-Seq]

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Project description:Introduction: Overcoming of acquired resistance to EGFR-tyrosine kinase inhibitors (EGFR-TKIs) is an intractable obstacle for many clinical oncologists. The mechanisms of resistance to EGFR-TKIs are very complex. Long non-coding RNAs (lncRNAs) may play an important role in cancer development and metastasis. However, the biological process between lncRNAs and drug resistance to EGFR mutated lung cancer largely unknown. Methods: Osimertinib and afatinib-resistant EGFR-mutated lung cancer cells were established using by a stepwise method. Microarray analysis of non-coding and coding RNAs was performed using parental and resistant EGFR-mutant NSCLC cells. Results: Microarray analysis was evaluated by bioinformatics analysis through medical-industrial collaboration. CRNDE and DGCR5 lncRNAs were highly expressed in EGFR-TKIs-resistant cells. CRNDE binds to eIF4A3 protein, down-regulates eIF4A3 and MUC1 expression, and down-regulates p-EGFR expression. CRNDE inhibition activated the eIF4A3/MUC1/EGFR signaling pathway and apoptotic activity and restored sensitivity to EGFR-TKIs. Conclusions: We identified lncRNA CRNDE associated with resistance to EGFR-TKIs in EGFR-mutant NSCLC cells. CRNDE may be a novel therapeutic target for EGFR mutant NSCLC patients.

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