Journal
CLINICAL SCIENCE
Volume 136, Issue 9, Pages 657-673Publisher
PORTLAND PRESS LTD
DOI: 10.1042/CS20220043
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Funding
- Ministry of Science and Technology of Taiwan [MOST-106-2320-B-005-001-MY3, MOST107-2314-B-002-251]
- Teh-Tzer Study Group for Human Medical Research Foundation [B1081007, B1101008]
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This study identified that ANGPTL1 is down-regulated in colorectal cancer (CRC) and is inversely correlated with metastasis and poor clinical outcomes. ANGPTL1 suppresses migration/invasion abilities, the expression of cancer stem cell markers, and sphere formation in CRC cells by enhancing FOXO3a expression. Overexpression of ANGPTL1 reduces liver metastasis, tumor growth, and tumorigenicity in tumor-bearing mice.
Angiopoietin-like protein 1 (ANGPTL1) is a member of the ANGPTL family that suppresses angiogenesis, cancer invasion, metastasis, and cancer progression. ANGPTL1 is down-regulated in various cancers including colorectal cancer (CRC); however, the effects and mechanisms of ANGPTL1 on liver metastasis and cancer stemness in CRC are poorly understood. In the present study, we identified that ANGPTL1 was down-regulated in CRC and inversely correlated with metastasis and poor clinical outcomes in CRC patients form the ONCOMINE database and Human Tissue Microarray staining. ANGPTL1 significantly suppressed the migration/invasion abilities, the expression of cancer stem cell (CSC) markers, and sphere formation by enhancing FOXO3a expression, which contributed to the reduction of stem cell transcription factor SOX2 expression in CRC cells. Consistently, overexpression of ANGPTL1 reduced liver metastasis, tumor growth, and tumorigenicity in tumor-bearing mice. ANGPTL1 expression was negatively correlated with CSC markers expression and poor clinical outcomes in CRC patients. Taken together, these findings demonstrate that the molecular mechanisms of ANGPTL1 in colorectal cancer stem cell progression may provide a novel therapeutic strategy for CRC.
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