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The ALK downregulated target gene HBP1 and repressor of MYCN activity as synergistic target for combined PI3K/HDAC inhibition

ABSTRACT: The ALK downregulated target gene HBP1 and repressor of MYCN activity as synergistic target for combined PI3K/HDAC inhibition

PROVIDER: PRJNA376388 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR5278140.fastq.gz	Fastqsanger.gz
	SRR5278150.fastq.gz	Fastqsanger.gz
	SRR5278160.fastq.gz	Fastqsanger.gz
	SRR5278170.fastq.gz	Fastqsanger.gz
	SRR5278180.fastq.gz	Fastqsanger.gz

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The ALK downregulated target gene HBP1 and repressor of MYCN activity as synergistic target for combined PI3K/HDAC inhibition [microarray]

Project description:ALK mutations occur in 10% of primary neuroblastoma and represent a major target for precision treatment. In combination with MYCN amplification, ALK mutations infer an ultra-high-risk phenotype with very poor prognosis. To anticipate to future precision drugging, a deeper understanding of the molecular consequences of constitutive ALK signaling and its relationship to MYCN activity in this aggressive pediatric tumor, will be essential to understand treatment responses and failure as well as to ensure improved design of drugging combinations. We show that mutant ALK downregulates the HMG-box transcription factor 1 (HBP1) through the PI3K-AKT-FOXO3a signaling axis. Interestingly, we also demonstrate that HBP1 is under control of MYCN, through negative regulation of the miR-17~92 cluster. Moreover, modulation of HBP1 in neuroblastoma negatively affect MYCN activity, including alleviating MYCN/PRC2 controlled gene repression. Combined targeting of PI3K and MYCN signaling induced strong synergistic blocking of tumor growth, thus offering potential for targeted therapeutic interventions.

2019-02-14 | GSE94811 | GEO

The ALK downregulated target gene HBP1 and repressor of MYCN activity as synergistic target for combined PI3K/HDAC inhibition [RNA-Seq]

2019-02-14 | GSE95189 | GEO

The ALK downregulated target gene HBP1 and repressor of MYCN activity as synergistic target for combined PI3K/HDAC inhibition

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

2019-02-14 | GSE95193 | GEO

Methylation of HBP1 by PRMT1 inhibits its tumor-suppressive function through regulating 2 GSN-mediated actin cytoskeleton remodeling

Project description:HBP1 is a sequence-specific transcription factor which acts as a tumor inhibitor. HBP1 exerts tumor-suppressive function through regulating the expression of many genes during cell metabolism and cell cycle process. Posttranslational modification of HBP1 is crucial for its function. In this study, we found that HBP1 was methylated at R378 by PRMT1, which decreased 16 HBP1 protein stability by promoting its ubiquitination and proteasome-mediated degradation. PRMT1-mediated methylation of HBP1 could alleviate the repressive effects of HBP1 on tumor metastasis and growth through regulation of GSN expression. GSN was identified as a novel target gene of HBP1. Methylation of HBP1 promoted actin cytoskeleton remodeling and tumor progression by downregulating GSN levels. The methylated HBP1-GSN axis was also associated with the clinical outcomes of cancer patients. Targeting methylated HBP1-GSN axis may provide a therapeutic strategy for cancer. Significance: This investigation elucidated the mechanism of how methylation of HBP1 at R378 inhibits its tumor-suppressive function and promotes actin cytoskeleton remodeling, thus providing the strategy for targeting HBP1 during cancer treatment.

2022-06-19 | GSE205932 | GEO

Identifying the intergenic ALK fusion LOC388942-ALK as a driver of non-small cell lung cancer

Project description:ALK fusions, such as the classic EML4-ALK, are known drivers of lung cancer and effective therapeutic targets. However, variant ALK fusions, including intergenic fusions like LOC388942-ALK (LA), have been detected in increasing numbers of patients, with their roles in tumorigenesis and ALK inhibitor resistance remaining unclear. Using CRISPR/Cas9, we generated the LA fusion in A549 and H441 cells, confirming elevated ALK expression via qRT-PCR and immunohistochemistry (IHC) staining. Functional analyses showed that LA significantly promoted tumor growth in vitro and in vivo while conferring increased resistance to alectinib. RNA-seq revealed upregulation of the FOS pathway in LA tumors, identifying FOS as a potential therapeutic target. Subsequently, we demonstrated that FOS disruption and inhibition sensitized LA tumors to treatment. RNA-seq profiling demonstrated that FOS depletion in LOC388942-ALK tumor significantly downregulated multiple oncogenic pathways related to cell cycle progression, DNA replication fidelity, and extracellular matrix remodeling, suggesting a pivotal role of FOS in maintaining tumor growth. These findings establish LOC388942-ALK as a novel oncogenic driver in lung cancer, highlighting its role in tumor growth and ALK inhibitor resistance. Targeting FOS may provide a promising therapeutic strategy for tumors harboring this intergenic fusion.

2025-03-01 | GSE290536 | GEO

HBP1 inhibits the development of type 2 diabetes mellitus through transcriptional activation of the IGFBP1 gene

Project description:Type 2 diabetes mellitus (T2DM) is a chronic metabolic disease that is highly prevalent worldwide and characterized by glucose and lipid metabolism disorders. However, the pathogenic mechanisms have not been fully established. Here, we found that HMG-box transcription factor 1 (HBP1) is involved in T2DM and that its deficiency in mice aggravates the features of diabetes. In addition, we undertook screening by RNA sequencing and found that HBP1 activates the transcription of the insulin-like growth factor binding protein 1 (IGFBP1) gene. Moreover, Insulin and palmitic acid reduced HBP1 protein expression and inhibited its binding to the IGFBP1 promoter. Furthermore, HBP1 reduced the serum free insulin-like growth factor 1 (IGF-1) concentration through IGFBP1 and inhibited the PI3K/AKT signaling pathway. This forms an insulin/HBP1/IGFBP1 negative feedback regulatory loop to dynamically regulate blood glucose and insulin concentrations. These findings have elucidated a mechanism whereby HBP1 and its negative feedback regulatory loop influence the development of T2DM, thereby providing a new theoretical basis and potential therapeutic target for T2DM.

2022-09-26 | GSE214089 | GEO

HMG Box-Containing Protein 1 (HBP1) Protects Against Pancreatic Injury in Acute Pancreatitis but Promotes Neoplastic Progression

Project description:Background & Aims Pancreatitis is an inflammatory disease of the exocrine pancreas and a known risk factor for pancreatic ductal adenocarcinoma (PDAC). Previously, we identified HMG- box transcription factor 1 (HBP1) as a potential master transcription factor (TF) in the early progression of PDAC, with its expression associated with poor patient survival, underscoring its significance in pancreatic disease. However, the functional role of HBP1 in the onset and progression of acute pancreatitis (AP) remains unknown. Methods We examined HBP1 expression in human pancreatitis samples and a cerulein-induced AP mouse model. Pancreatic-specific conditional HBP1 knockout mice, with or without an oncogenic Kras mutation, were generated and compared to their littermate controls. Spatial transcriptomics and multiplexed protein assays, histological analysis, and immunostaining were utilized to characterize pathological changes. Findings from mouse models were validated using inducible HBP1-overexpressing human pancreatic ductal epithelial cells. Results HBP1 was upregulated in pancreatic exocrine cells in human chronic pancreatitis and mouse acute pancreatitis, with its expression in human chronic pancreatitis correlating with cancer presence. Pancreatic HBP1 ablation disrupted acinar homeostasis by impairing autophagic flux and exacerbating inflammation following injury. In the presence of oncogenic KRAS, HBP1 ablation delayed the formation of pancreatic intraepithelial neoplasia (PanIN), the precursor to PDAC, and slowed its progression to higher-grade lesions. Conclusions HBP1 upregulation in pancreatitis mitigates pancreatic inflammatory injury; however, in the presence of oncogenic KRAS, it facilitates PanIN progression. Thus, HBP1 serves as a critical regulator in both pancreatitis and early pancreatic neoplasia, representing a potential therapeutic target for intervening pancreatitis and PanIN progression.

2025-07-16 | GSE296582 | GEO

Alteration of treatment of the ALK inhibitor in ALK-amplified neuroblastoma

Project description:Anaplastic Lymphoma Kinase (ALK) most frequently mutated in neuroblastoma (NB) and is atractive molecular target for therapy. However, efficacy of the ALK inhibitor against ALK-amplified NB is unclear. To elucidate genetic alterations induced by treatment of the ALK inhibitor, we compared expression profile between ALK inhibitor-treated and DMSO-treated NB39nu cells using Agilent SurePrint G3 Human GE 8x60K V2 Microarray Kit

2017-11-28 | GSE107354 | GEO

Pseudomonas nitroreducens HBP1

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Homo sapiens

Project description:The ALK downregulated target gene HBP1 and repressor of MYCN activity as synergistic target for combined PI3K/HDAC inhibition [microarray]

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