CHD4/NuRD complex regulates complement gene expression and correlates with CD8 T cell infiltration in human...

Area of Science:

• Molecular Biology
• Cancer Research
• Epigenetics

Background:

• The Nucleosome Remodeling and Deacetylation (NuRD) complex regulates gene transcription by altering chromatin accessibility.
• While individual NuRD subunits are linked to various cancers, its comprehensive role in hepatocellular carcinoma (HCC) remains unclear.
• The NuRD complex has not been previously investigated as a whole in cancer contexts.

Purpose of the Study:

• To investigate the expression and prognostic value of the NuRD complex in HCC.
• To elucidate the functional role of the CHD4/NuRD complex in HCC progression and the tumor microenvironment.

Main Methods:

• Analysis of NuRD complex expression using TCGA RNA-seq data in HCC.
• Functional studies involving CHD4 knockdown in HCC cell lines.
• Bioinformatic analysis of NuRD expression correlation with immune infiltration.

Main Results:

• Nine of 14 examined NuRD subunits were overexpressed in HCC, correlating with cancer progression.
• CHD4 knockdown inhibited HCC cell proliferation, migration, invasion, and colony formation, while promoting apoptosis.
• The CHD4/NuRD complex was found to regulate complement gene expression and inversely correlate with CD8 T cell and DC cell infiltration.

Conclusions:

• The CHD4/NuRD complex plays a significant oncogenic role in human HCC.
• This complex regulates complement gene expression and impacts the HCC immune microenvironment.
• NuRD complex expression serves as a potential prognostic marker and therapeutic target in HCC.