JMJD1A inhibits proliferation and aggressiveness of gastric cancer by up-regulating RUNX3
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ABSTRACT:
PROVIDER: PRJNA606040 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR11067842_1.fastq.gz | Fastqsanger.gz | |||
| SRR11067842_2.fastq.gz | Fastqsanger.gz | |||
| SRR11067843_1.fastq.gz | Fastqsanger.gz | |||
| SRR11067843_2.fastq.gz | Fastqsanger.gz | |||
| SRR11067844_1.fastq.gz | Fastqsanger.gz |
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Project description:The histone demethylase JMJD1A（Jumoji domain containing 1A） is overexpressed in multiple cancers and promotes cancer progression. However, the role and mechanism of JMJD1A in gastric cancer remains poorly understood.Here, we found that JMJD1A could suppress gastric cancer cell proliferation, migration, invasion and xenograft tumor growth. Using RNA sequencing, we identified RUNX3 as a novel target gene of JMJD1A.
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Project description:In this study, RUNX3 expression was analyzed in normal and malignant haematopoiesis and the impact of its dysregulation on myelopoiesis was further determined. We found that RUNX3 was highly expressed in haematopoietic progenitors, with its levels reducing towards granulocytic differentiation. In AML, RUNX3 was overexpressed across all different subtypes except in core binding factor AML where it was downregulated. RUNX3 overexpression in human haematopoietic stem and progenitor cells (HSPC) inhibited myeloid development, particularly granulopoiesis. Further RNA-sequencing studies showed that RUNX3 overexpression downregulates key hematopoietic genes, while upregulating certain lymphoid genes. Overall, this study suggests that increased RUNX3 expression could contribute to the myeloid block characteristic of AML by possibly driving a competing transcriptional program favoring the lymphoid fate.
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Project description:Hypoxia is one of the major driving forces mediating tumor angiogenesis, aggressiveness, as well as resistance to chemo- and radiotherapy. It has also been suggested to play important roles in stem cell maintenance for both normal and cancer tissues. However, the mechanisms by which hypoxia-driven epigenetic changes modulate tumorigenesis remain poorly understood. As the histone H3 lysine 9 (H3K9) demethylase Jmjd1a and methyltransferase G9a are upregulated downstream targets of hypoxia, we focused on these two catalytically opposing epigenetic modifiers to address this question. Through the use of homozygous Jmjd1a and G9a knockout mouse embryonic stem (ES) cells, we found that Jmjd1a was not required for stem cell self-renewal and that anti-angiogenesis related genes were epigenetically dysregulated in both Jmjd1a- and G9a deficient ES cells under hypoxic conditions, accompanied by corresponding changes in H3K9 dimethylation and H3K4 trimethylation levels in the proximal promoter regions of these target genes. Most importantly, these genetic alterations led to opposing tumor phenotypes: loss of Jmjd1a results in increased tumor growth, whereas loss of G9a produces smaller tumors. These findings provide new insights on the importance of hypoxia signalling in regulating the epigenetic status and expression of angiogenesis genes that promote tumor progression. 63 microarray samples consisting of 7 mouse ES cell lines of which 2 are wild type (control), 2 Jmjd1a knockout, 2 G9a knockout and 1 G9a knockout that was reconstituted for G9a (G9a control). Each cell line and condition was seeded at 3 different densities (2X10^5, 4X10^5 and 6X10^5) in 6 cm dishes to control for the effects of cell confluency on gene expression. 18 hours after plating, the cells were subjected to normoxia (21% O2) for 24 hours (control), normoxia 20 hours followed by hypoxia (1% O2) for 4 hours (acute hypoxia) and 24 hours hypoxia (chronic treatment). Total RNA was harvested from all samples for microarrays after the 24 hour treatments.
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Project description:Gastric cancer metastasis is a major cause of mortality worldwide. Inhibition of RUNX3 in gastric cancer cell lines reduced migration, invasion, and anchorage independent growth in vitro. Following splenic inoculation, CRISPR-mediated RUNX3-knockout HGC-27 cells show suppression of xenograft growth and liver metastasis. We interrogated the potential of RUNX3 as a metastasis driver in gastric cancer by profiling its target genes. Transcriptomic analysis revealed strong involvement of RUNX3 in the regulation of multiple developmental pathways, consistent with the notion that RUNX family genes are master regulators of development. RUNX3 promoted “cell migration” and “extracellular matrix” programs, which are necessary for metastasis. Of note, we found pro-metastatic genes WNT5A, CD44 and VIM among the top differentially expressed genes in RUNX3-knockout versus control cells. Chromatin immunoprecipitation sequencing and HiChIP analyses revealed that RUNX3 bound to the enhancers and promoters of these genes, suggesting that they are under direct transcriptional control by RUNX3. We show that RUNX3 promoted metastasis in part through its upregulation of WNT5A to promote migration, invasion, and anchorage-independent growth in various malignancies. Our study therefore reveals the RUNX3-WNT5A axis as a key targetable mechanism for gastric cancer metastasis.
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Project description:Hypoxia is one of the major driving forces mediating tumor angiogenesis, aggressiveness, as well as resistance to chemo- and radiotherapy. It has also been suggested to play important roles in stem cell maintenance for both normal and cancer tissues. However, the mechanisms by which hypoxia-driven epigenetic changes modulate tumorigenesis remain poorly understood. As the histone H3 lysine 9 (H3K9) demethylase Jmjd1a and methyltransferase G9a are upregulated downstream targets of hypoxia, we focused on these two catalytically opposing epigenetic modifiers to address this question. Through the use of homozygous Jmjd1a and G9a knockout mouse embryonic stem (ES) cells, we found that Jmjd1a was not required for stem cell self-renewal and that anti-angiogenesis related genes were epigenetically dysregulated in both Jmjd1a- and G9a deficient ES cells under hypoxic conditions, accompanied by corresponding changes in H3K9 dimethylation and H3K4 trimethylation levels in the proximal promoter regions of these target genes. Most importantly, these genetic alterations led to opposing tumor phenotypes: loss of Jmjd1a results in increased tumor growth, whereas loss of G9a produces smaller tumors. These findings provide new insights on the importance of hypoxia signalling in regulating the epigenetic status and expression of angiogenesis genes that promote tumor progression.
2014-07-30 | GSE35061 | GEO
Project description:Gastric cancer metastasis is a major cause of mortality worldwide. Inhibition of RUNX3 in gastric cancer cell lines reduced migration, invasion, and anchorage independent growth in vitro. Following splenic inoculation, CRISPR-mediated RUNX3-knockout HGC-27 cells show suppression of xenograft growth and liver metastasis. We interrogated the potential of RUNX3 as a metastasis driver in gastric cancer by profiling its target genes. Transcriptomic analysis revealed strong involvement of RUNX3 in the regulation of multiple developmental pathways, consistent with the notion that RUNX family genes are master regulators of development. RUNX3 promoted “cell migration” and “extracellular matrix” programs, which are necessary for metastasis. Of note, we found pro-metastatic genes WNT5A, CD44 and VIM among the top differentially expressed genes in RUNX3-knockout versus control cells. Chromatin immunoprecipitation sequencing and HiChIP analyses revealed that RUNX3 bound to the enhancers and promoters of these genes, suggesting that they are under direct transcriptional control by RUNX3. We show that RUNX3 promoted metastasis in part through its upregulation of WNT5A to promote migration, invasion, and anchorage-independent growth in various malignancies. Our study therefore reveals the RUNX3-WNT5A axis as a key targetable mechanism for gastric cancer metastasis.
2023-12-20 | GSE250479 | GEO
Project description:Gastric cancer metastasis is a major cause of mortality worldwide. Inhibition of RUNX3 in gastric cancer cell lines reduced migration, invasion, and anchorage independent growth in vitro. Following splenic inoculation, CRISPR-mediated RUNX3-knockout HGC-27 cells show suppression of xenograft growth and liver metastasis. We interrogated the potential of RUNX3 as a metastasis driver in gastric cancer by profiling its target genes. Transcriptomic analysis revealed strong involvement of RUNX3 in the regulation of multiple developmental pathways, consistent with the notion that RUNX family genes are master regulators of development. RUNX3 promoted “cell migration” and “extracellular matrix” programs, which are necessary for metastasis. Of note, we found pro-metastatic genes WNT5A, CD44 and VIM among the top differentially expressed genes in RUNX3-knockout versus control cells. Chromatin immunoprecipitation sequencing and HiChIP analyses revealed that RUNX3 bound to the enhancers and promoters of these genes, suggesting that they are under direct transcriptional control by RUNX3. We show that RUNX3 promoted metastasis in part through its upregulation of WNT5A to promote migration, invasion, and anchorage-independent growth in various malignancies. Our study therefore reveals the RUNX3-WNT5A axis as a key targetable mechanism for gastric cancer metastasis.
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Project description:Purpose: To demonstrate Runx3's association with organizing the extracellular matrix in SFZ/DZ chondrocytes. Method: RNA samples were collected from SFZ/DZ chondrocytes of 5-day-old Col2a1-Cre;Runx3fl/fl and Runx3fl/fl mice. Results: 18 genes were up- or down-regulated by more than 2-fold in the Runx3 knockout in SFZ. Conclusions: However, genes organizing the extracellular matrix were down-regulated in Runx3 cKO DZ chondrocytes.
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