STL427944 suppresses FOXM1 via nuclear export and subsequent autophagic degradation
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA683088 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR13212346_1.fastq.gz | Fastqsanger.gz | |||
| SRR13212346_2.fastq.gz | Fastqsanger.gz | |||
| SRR13212347_1.fastq.gz | Fastqsanger.gz | |||
| SRR13212347_2.fastq.gz | Fastqsanger.gz | |||
| SRR13212348_1.fastq.gz | Fastqsanger.gz |
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Project description:FOXM1 transcription factor is an oncogene and a crucial regulator of cancer chemoresistance. Existing pharmacological FOXM1 inhibitors attenuate resistance of cancer cells to treatment but exhibit insufficient specificity. We performed in silico screening of small molecules from NIH LINCS database to identify STL427944 compound that suppresses FOXM1 through a novel two-step mechanism. STL427944 treatment induces relocalization of nuclear FOXM1 protein to cytoplasm, where it is subsequently degraded in an autophagosome-dependent manner. Human cancer cells treated with STL427944 exhibit increased sensitivity to cytotoxic effects of conventional chemotherapeutic agents. Transcriptome-based analysis of STL427944-induced gene expression changes revealed prominent suppression of gene signatures characteristic for FOXM1 and its downstream targets but no significant changes in other important regulatory pathways, thereby suggesting high selectivity of STL427944 towards FOXM1. We expect that STL427944 or its derivatives may be used in combination with different chemotherapeutical drugs to overcome tumor chemoresistance and improve anti-cancer treatment efficacy.
2021-07-21 | GSE162826 | GEO
Project description:Autophagy plays important roles in malignant pathogenesis and drug resistance. We used medicinal chemistry approaches to generate a series of novel agents that inhibit autophagic degradation. ROC-325 was selected as a lead compound for further evaluation. Comprehensive in vitro and in vivo studies were conducted to evaluate the selectivity, tolerability, and efficacy of ROC-325 in preclinical models of renal cell carcinoma (RCC). ROC-325 exhibited superior in vitro anticancer effects than the existing autophagy inhibitor hydroxychloroquine in 12 different tumor models with diverse genetic backgrounds. Focused studies of the mechanism of action and efficacy of ROC-325 in RCC cells showed that drug treatment induced hallmark characteristics of autophagy inhibition including accumulation of autophagosomes with undegraded cargo, lysosomal deacidification, p62 stabilization, and disruption of autophagic flux. Subsequent experiments showed that ROC-325 antagonized RCC growth and survival in an ATG5/7-dependent manner, induced apoptosis, and exhibited favorable selectivity. Oral administration of ROC-325 to mice bearing 786-0 RCC xenografts was well tolerated, significantly more effective at inhibiting tumor progression than HCQ, and inhibited autophagy in vivo. We used microarrays to determine gene expression changes following 24 h treatment with ROC-325 in RCC cell lines and identified differentially expressed genes.
2018-02-16 | GSE89766 | GEO
Project description:STING, the pivotal adaptor protein of CGAS-STING signaling, is critical for type I IFN production of innate immunity. However, excessive or prolonged activation of STING is associated with autoinflammatory and autoimmune diseases. Thus, preventing STING from over-activation is important to maintain immune homeostasis. Here, we reported that SESN1 was essential to prevent the excessive activation of STING-mediated type I IFN signaling through autophagic degradation of STING.
2025-05-29 | GSE266409 | GEO
Project description:CCDC50 suppresses NLRP3 inflammasome activity by mediating the autophagic degradation of NLRP3
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Project description:Aims: Cardiac fibroblasts (CFs) play a crucial role in cardiac remodelling, which is a common cause of heart failure (HF). However, the molecular mechanisms underlying the fibroblast-to-myofibroblast transition remain largely unknown. Foxm1 is well known in various cardiopulmonary pathologies. However, Foxm1-driven CF activation in the progression of cardiac remodelling to HF remains to be investigated. Methods: Changes in Foxm1 expression were assessed in samples from patients with HF and mice with transverse aortic constriction (TAC)-induced cardiac remodelling. Pharmacologic antagonist FDI-6 was used to explore the effects of Foxm1 inhibition on post-TAC outcomes. Tcf21-Cre and PostnMCM were used to evaluate Foxm1 loss- and gain-of-function in CFs and myofibroblasts, respectively. Cardiac function and remodelling were examined by echocardiography and histological analysis. Foxm1 downstream target genes were identified by mass spectrometry (MS) and transcriptomic analysis. Post-translational regulation was evaluated by in vitro chromatin immunoprecipitation, co-immunoprecipitation, and ubiquitination assays. Pharmacological inhibition of Usp10 or knockout of p38γ in vivo verified the signalling pathway by which Foxm1 regulated cardiac remodelling. Results: Foxm1 was upregulated in human HF samples as well as in the mouse cardiac remodelling model. CFs were the primary cell type responsible for Foxm1 upregulation. Foxm1 pharmacological inhibition or genetic knockout in CFs or myofibroblasts significantly attenuated TAC-induced cardiac remodelling and HF. Conversely, conditional overexpression of Foxm1 in CFs or myofibroblasts resulted in more severe pathological cardiac remodelling and dysfunction. Combined RNA-sequencing and MS analysis revealed that Foxm1 promoted Usp10 expression by binding to its promoter. Usp10 interacted with p38γ, resulting in p38γ deubiquitination and thus influencing the downstream p38 mitogen-activated protein kinase (MAPK) signalling pathway. Pharmacological inhibition of Usp10 or genetic knockout of p38γ ameliorated the exacerbated TAC-induced cardiac remodelling in mice with myofibroblast-specific Foxm1 overexpression. Conclusion: Our findings reveal an essential role of Foxm1 in CF activation during cardiac remodelling. These results suggest that targeting the Foxm1/Usp10/p38γ MAPK axis may represent a new potential therapeutic strategy against pathological cardiac remodelling and HF.
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Project description:FOXM1 is a key transcription factor regulating cell cycle progression, DNA damage response, and a host of other hallmark cancer features, but the role of the FOXM1 cistrome in driving estrogen receptor-positive (ER+) vs. ER- breast cancer clinical outcomes remains undefined. Chromatin immunoprecipitation sequencing (ChIP-Seq) coupled with RNA sequencing (RNA-Seq) analyses was used to identify FOXM1 target genes in breast cancer cells (MCF-7) where FOXM1 expression was either induced by cell proliferation or repressed by p53 upregulation.
2015-10-26 | E-GEOD-72977 | biostudies-arrayexpress
Project description:FOXM1 is a key transcription factor regulating cell cycle progression, DNA damage response, and a host of other hallmark cancer features, but the role of the FOXM1 cistrome in driving estrogen receptor-positive (ER+) vs. ER- breast cancer clinical outcomes remains undefined. Chromatin immunoprecipitation sequencing (ChIP-Seq) coupled with RNA sequencing (RNA-Seq) analyses was used to identify FOXM1 target genes in breast cancer cells (MCF-7) where FOXM1 expression was either induced by cell proliferation or repressed by p53 upregulation.
2015-10-26 | E-GEOD-73370 | biostudies-arrayexpress
Project description:FOXM1 transcription factor is an oncogene and a master regulator of chemoresistance in multiple cancers. Pharmacological inhibition of FOXM1 is a promising approach but has proven to be challenging. We performed a network-centric transcriptomic analysis to identify a novel compound STL427944 that selectively suppresses FOXM1 by inducing the relocalization of nuclear FOXM1 protein to the cytoplasm and promoting its subsequent degradation by autophagosomes. Human cancer cells treated with STL427944 exhibit increased sensitivity to cytotoxic effects of conventional chemotherapeutic treatments (platinum-based agents, 5-fluorouracil, and taxanes). RNA-seq analysis of STL427944-induced gene expression changes revealed prominent suppression of gene signatures characteristic for FOXM1 and its downstream targets but no significant changes in other important regulatory pathways, thereby suggesting high selectivity of STL427944 toward the FOXM1 pathway. Collectively, the novel autophagy-dependent mode of FOXM1 suppression by STL427944 validates a unique pathway to overcome tumor chemoresistance and improve the efficacy of treatment with conventional cancer drugs.
| S-EPMC8280155 | biostudies-literature
Project description:Fork-head box protein M1 (FoxM1) is a transcription factor which plays critical roles in development and progression of multiple cancers, including human hepatocellular carcinoma (HCC). However, the regulatory mechanism of FoxM1 itself remains largely unclear. Here, we discovered a novel role of abnormal spindle-like microcephaly associated (ASPM) in HCC, which binds to FoxM1 protein and enhances its stability by preventing proteasome-mediated degradation. ChIP-sequencing data showed that ASPM and FoxM1 co-occupies on the promoter region of multiple genes to promote their transcriptions, leading to the enhancement of a FoxM1-driven oncogenic progression. Intriguingly, FoxM1 binds to the promoter region of ASPM and transcriptionally activates the ASPM expression. Furthermore, data from clinical samples showed that a higher co-expression of ASPM and FoxM1 significantly correlates with poor prognosis in HCC, indicating that a positive feedforward loop between ASPM and FoxM1 coordinately promotes the aggressive progression in HCC. Collectively, our study reveals that reciprocal regulation of ASPM and FoxM1 amplifies the oncogenic progression and emphasizes an ASPM-FoxM1 feedforward loop could be a potential biomarker and therapeutic target in HCC.
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