Targeted inhibition of LIFR enhances therapeutic efficacy of HDAC inhibitors in triple negative breast cancer
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ABSTRACT:
PROVIDER: PRJNA685420 | ENA |
REPOSITORIES: ENA
Dataset's files
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| SRR13255947.fastq.gz | Fastqsanger.gz | |||
| SRR13255948.fastq.gz | Fastqsanger.gz | |||
| SRR13255949.fastq.gz | Fastqsanger.gz | |||
| SRR13255950.fastq.gz | Fastqsanger.gz | |||
| SRR13255951.fastq.gz | Fastqsanger.gz |
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Project description:Histone deacetylase inhibitors (HDACi) are identified as novel therapeutic agents, however, recent clinical studies suggested that they are marginally effective in treating triple negative breast cancer (TNBC). Here, we show that first-in-class Leukemia Inhibitory Factor Receptor (LIFRα) inhibitor EC359 could enhance the therapeutic efficacy of HDACi against TNBC. We observed that both targeted knockdown of LIFR with CRISPR or treatment with EC359 enhanced the potency of four different HDACi in reducing cell viability, cell survival, and enhanced apoptosis compared to monotherapy in TNBC cells. RNA-seq studies demonstrated oncogenic/survival signaling pathways activated by HDACi were attenuated by the EC359 + HDACi therapy. Importantly, combination therapy potently inhibited the growth of TNBC patient derived explants, cell derived xenografts and patient-derived xenografts in vivo. Collectively, our results suggest that targeted inhibition of LIFR can enhance the therapeutic efficacy of HDACi in TNBC.
| S-EPMC8556368 | biostudies-literature
Project description:Here, we examined the therapeutic utility of EC359 in improving the therapeutic efficacy of HDACi in TNBC models. BT-549 cells were treated with vehicle (DMSO), EC359, HDACi(Vorinostat), EC359+HDACi and the RNA was isolated and utilized for RNA-seq analysis. Our results demonstrated that the beneficial effect of the EC359+HDACi involves regulation of multiple genes that involved in several pathways including apoptosis, metabolism and cell cycle.
2021-12-02 | GSE163249 | GEO
Project description:Purpose: The clinical use of MEK inhibitors in uveal melanoma is limited by the rapid acquisition of resistance. The current study has used multi-omics approaches and drug screens to identify the pan-HDAC inhibitor panobinostat as an effective strategy to limit MEK inhibitor resistance. Experimental Design: Mass spectrometry-based proteomics and RNA-Seq was used to identify the signaling pathways involved in the escape of uveal melanoma cells from MEK inhibitor therapy. Mechanistic studies were performed to evaluate the escape pathways identified and the efficacy of the MEK-HDAC inhibitor combination was demonstrated in multiple in vivo xenograft models of uveal melanoma. Results: We identified a number of putative escape pathways that were upregulated following MEK inhibition including the PI3K/AKT pathway, ROR1/2 and IGF1R signaling. MEK inhibition was also associated with a widespread increase in GPCR expression, particularly the Endothelin B receptor and that this contributed to therapeutic escape through YAP signaling. A screen of 289 clinical grade compounds identified HDAC inhibitors as potential candidates that suppressed the adaptive YAP and AKT signaling that followed MEK inhibition. In vivo xenograft studies revealed the MEK-HDAC inhibitor combination to outperform either agent alone, leading to a long-term decrease of tumor growth and the suppression of adaptive PI3K/AKT and YAP signaling. Conclusions Together our studies have identified GPCR-mediated YAP activation and RTK-driven AKT signaling as key pathways involved in the escape of uveal melanoma cells from MEK inhibition. We further demonstrate that HDAC inhibition is a promising combination partner for MEK inhibitors in uveal melanoma.
2020-05-26 | PXD013988 | Pride
Project description:Pancreatic ductal adenocarcinoma (PDAC) responds poorly to chemotherapeutics due to inherent drug resistance orchestrated by crosstalk between cancer cells and cancer-associated fibroblasts (CAFs). The LIF/LIFR axis activated by this crosstalk contributes significantly to cancer cell stemness and is a potential therapeutic target. Combined targeting of LIFR with small molecular inhibitors along with standard of care remains unexplored.The efficacy of LIFR small molecule inhibitor, EC359 was evaluated in combination with standard-of-care using human and mouse cell lines, tumoroids, KPC (KrasG12D; TP53R172H; Pdx1-Cre), and orthotopically co-implanted murine models. The impact of LIFR targeting on PDAC was analyzed by RNA-sequencing, immunohistochemistry, western blot, and immune profiles by flow cytometry.In co-implantation murine models, EC359 (5mg/kg body weight), in combination with gemcitabine (Gem, 25mg/kg body weight), reduced the tumor burdens up to 90% compared to the untreated controls (p<0.001) and by 55% compared to Gem alone. The RNA-seq analysis of treated tumors showed significant alterations in stemness markers, extracellular matrix modulation, microtubule structure assembly, and adaptive immune response, suggesting the simultaneous targeting of cell-intrinsic and TME-mediated mechanisms by EC359. The EC359 in autochthonous KPC tumors improved the efficacy of Gem and nab-paclitaxel targeting, increased the dendritic cells, but reduced regulatory T-cells, systemically. Mechanistically, EC359 reduces the PDAC cell stemness, stabilizes the microtubule assembly, and reduces the immunosuppressive microenvironment, contributing to improved efficacy of standard of care in PDAC.
2025-08-27 | GSE300401 | GEO
Project description:Histone deacetylase (HDAC) inhibition has been shown in previous studies to disrupt the synovial sarcoma oncoprotein complex, resulting in apoptosis. To understand the molecular effects of HDAC inhibition, RNA-Seq transcriptome analysis was undertaken in six human synovial sarcoma cell lines. HDAC inhibition induced pathways of cell cycle arrest, neuronal differentiation and response to oxygen-containing species, effects also observed in other cancers treated with this class of drugs. More specific to synovial sarcoma, polycomb-group targets were reactivated including tumor suppressor CDKN2A, and pro-apoptotic transcriptional patterns were induced. Functional analyses revealed that ROS-mediated FOXO activation and pro-apoptotic factors BIK, BIM and BMF were important to apoptosis induction following HDAC-inhibition in synovial sarcoma
| EGAS00001002637 | EGA
Project description:Dlx3 over-expression in mouse embryonic fibroblasts changed the expression level of numerous genes involved in osteogenesis and embryonic stem cell-related pathways as revealed by microarray analysis. From the list of Dlx3 modulated genes we focused our attention on the study of two candidates, Lifr and Chrdl1. Chromatin immunoprecipitation demonstrated the recruitment of Dlx3 transcription factor to the promoters of Lifr and Chrdl1, and luciferase assays confirmed the role of Dlx3 in the regulation of Lifr expression. Over-expression of Dlx3 in mouse embryonic stem cells stimulated Lifr and Chrdl1 expression and inhibited expression of Id proteins and Bmp4. We show that Dlx3 increases the expression of both soluble and transmembrane forms of Lifr. Soluble Lifr may regulate extracellular Lif levels via solution binding, while transmembrane Lifr mediates the signal transduction pathway. The data suggests that Dlx3 may be involved in stem cell differentiation in a dosage dependent way through its interaction with Lifr and with Chrdl1, a known antagonist of Bmp4. We speculate that Dlx3 may also be involved in osteoblast differentiation through interactions involving Lifr, Bmp, and Id proteins and signaling via the JAK/STAT and MAPK pathways. In summary, our data suggests that Dlx3 proteins play a significant role in a highly tuned network in early embryogenesis. Keywords: treated vs.untreated Stable and Transient transfection of Dlx3 in MEF. Total of 4 hybridizations including biological replicates.
2009-08-15 | E-GEOD-11727 | biostudies-arrayexpress
Project description:MCF7 cells were infected with lentiviral particles containing LIFR-targeted shRNAs then chemically selected to create a stable pooled population of shLIFR MCF7 cells. The goal of the study was to determine the downstream targets of LIFR in human MCF7 breast cancer cells.
2024-05-03 | GSE174592 | GEO
Project description:HDAC inhibition enhances the in vivo efficacy of MEK inhibitor therapy in uveal melanoma
| PRJNA525852 | ENA
Project description:Despite advances in breast cancer treatment, residual disease driven by dormant tumor cells continues to be a significant clinical problem. Leukemia inhibitory factor receptor (LIFR) promotes a dormancy phenotype in breast cancer cells and LIFR loss is correlated with poor patient survival. Herein, we demonstrate that histone deacetylase inhibitors (HDACi), which are in phase III clinical trials for breast cancer, epigenetically induced LIFR and activated a pro-dormancy program in breast cancer cells. HDACi slowed breast cancer cell proliferation and reduced primary tumor growth. Primary breast tumors from HDACi-treated patients had increased LIFR levels and reduced proliferation rates compared to pre-treatment levels. Recent Phase II clinical trial data studying entinostat and azacitidine in metastatic breast cancer revealed that induction of several pro-dormancy genes post-treatment was associated with prolonged patient survival. Together, these findings suggest HDACi as a potential therapeutic avenue to promote dormancy, prevent recurrence, and improve patient outcomes in breast cancer.
| S-EPMC8403155 | biostudies-literature
Project description:Purpose: The clinical use of MEK inhibitors in uveal melanoma is limited by the rapid acquisition of resistance. The current study has used unbiased multi-omics and drug screens to identify the pan-HDAC inhibitor panobinostat as an effective strategy to limit MEK inhibitor resistance.
2019-06-11 | GSE127948 | GEO