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Updated: Feb 28, 2026
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Deficient Pms2, ERCC1, Ku86, CcOI in Field Defects During Progression to Colon Cancer
Published on: July 28, 2010
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Cholesterol Enhances Colorectal Cancer Progression via ROS Elevation and MAPK Signaling Pathway Activation.
Caihua Wang1, Peiwei Li1, Junmei Xuan2
1Department of Gastroenterology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.
Summary
Low-density lipoprotein cholesterol (LDL) promotes colorectal cancer (CRC) metastasis and progression by increasing inflammation, reactive oxygen species (ROS), and activating the MAPK pathway. Further research into LDL
Area of Science:
- Oncology
- Molecular Biology
- Gastroenterology
Background:
- Elevated serum cholesterol is linked to colorectal adenoma and cancer risk.
- The impact of cholesterol on colorectal cancer (CRC) metastasis remains understudied.
Purpose of the Study:
- To investigate the association between low-density lipoprotein cholesterol (LDL) and CRC metastasis.
- To explore the mechanisms by which LDL influences CRC progression.
Main Methods:
- Assessed LDL and LDL receptor (LDLR) levels in CRC patients.
- Evaluated LDL effects on CRC cell migration, stemness, and proliferation in vitro.
- Investigated high-fat diet (HFD) effects on tumor growth and intestinal tumorigenicity in vivo.
- Utilized ROS assays, gene expression arrays, and western blot to elucidate mechanisms.
Main Results:
- LDL levels correlated positively with liver metastases; higher LDLR expression linked to advanced CRC stages.
- LDL promoted CRC cell migration and stemness in vitro, upregulating key stemness genes.
- HFD enhanced tumor growth and intestinal tumorigenicity in vivo.
- LDL increased ROS levels and activated the MAP kinase (MAPK) signaling pathway.
Conclusions:
- LDL exacerbates intestinal inflammation and CRC progression through ROS and MAPK pathway activation.
- Inflammation is a critical factor in cancer initiation.
- The role of LDL in intestinal tumorigenicity warrants further investigation.
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