Related Experiment Videos
IGF2BP1-Mediated m⁶A Modification Stabilizes HMGA2 mRNA to Promote Intrahepatic Cholangiocarcinoma Progression
Yu Guo1, Le Zhu2, Kaiheng Hu3
1Department of General Surgery, Hepatobiliary Surgery Center, Huashan Hospital and Cancer Metastasis Institute, Fudan University, Shanghai, China; Key Laboratory of Whole-Period Monitoring and Precise Intervention of Digestive Cancer, Shanghai Municipal Health Commission, Minhang Hospital, Fudan University, Shanghai, China.
Cellular and Molecular Gastroenterology and Hepatology
|June 24, 2026
Summary
High-mobility group protein A2 (HMGA2) is upregulated in intrahepatic cholangiocarcinoma (iCCA), driving cancer progression. Targeting the IGF2BP1-HMGA2 axis may offer new therapeutic strategies for this lethal malignancy.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Research
Background:
- Intrahepatic cholangiocarcinoma (iCCA) is a deadly cancer with limited treatment options.
- High-mobility group protein A2 (HMGA2) is an oncogene implicated in various cancers, but its role in iCCA is unclear.
- Identifying novel therapeutic targets for iCCA is crucial.
Purpose of the Study:
- To investigate the clinical significance of HMGA2 in iCCA.
- To elucidate the molecular mechanisms underlying HMGA2 function in iCCA progression.
- To explore the IGF2BP1-HMGA2 axis as a potential therapeutic target.
Main Methods:
- Integrated analysis of four iCCA patient cohorts (TCGA, Zhongshan Hospital, institutional).
- Functional studies using iCCA cell lines and multiple mouse models (xenograft, syngeneic, spontaneous, metastasis).
- Investigated N6-methyladenosine (m6A) modification and RNA-binding proteins.
Main Results:
- HMGA2 is significantly upregulated in iCCA, correlating with poor survival and showing female-specific association with perineural invasion.
- HMGA2 depletion inhibited iCCA cell proliferation, migration, tumor growth, and metastasis.
- HMGA2 expression is stabilized by IGF2BP1 in an m6A-dependent manner, promoting PI3K-AKT pathway activation.
Conclusions:
- The IGF2BP1-HMGA2 axis plays a critical role in iCCA pathogenesis.
- This axis represents a promising therapeutic target for intrahepatic cholangiocarcinoma.
Related Concept Videos
02:23Abnormal Proliferation
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the daughter...
03:03mTOR Signaling and Cancer Progression
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
The mTOR pathway or the...
01:15Receptor Downregulation in MVBs
Multivesicular bodies (MVBs) are mature endosomes that sort ubiquitinated proteins and then fuse with lysosomes to degrade the sorted proteins. Epidermal growth factor (EGF) and its receptor (EGFR) form a complex that can be internalized through endocytosis, sorted into an MVB, and later degraded.
The EGFR can initiate signaling pathways that lead to cell proliferation, migration, and differentiation. Overexpression of EGFR stimulates cells to proliferate. Excessive EGFR activation may...
The EGFR can initiate signaling pathways that lead to cell proliferation, migration, and differentiation. Overexpression of EGFR stimulates cells to proliferate. Excessive EGFR activation may...