» Articles » PMID: 37162505

Fibulin-2 Facilitates Malignant Progression of Hepatocellular Carcinoma

Overview
Publisher Aves
Specialty Gastroenterology
Date 2023 May 10
PMID 37162505
Authors
Affiliations
Soon will be listed here.
Abstract

Background: Identification of biomarkers to assist in the clinical management of hepatocellular carcinoma represents an urgent requirement. Fibulin-2 is known to contribute to the development and progression of various cancer types. This research investigated the role of fibulin-2 in hepatocellular carcinoma and explored the possible mechanisms.

Methods: The expression of fibulin-2 in hepatocellular carcinoma was measured by bioinformatic analysis and confirmed by western blot and immunohistochemical staining in cell lines or patients' samples. The clinicopathologic features of hepatocellular carcinoma patients was analyzed. Cell viability assays were used to explore the role of fibulin-2 on proliferation in hepatocellular carcinoma. Western blot was conducted to uncover changes of protein expression of Ras-MEK-ERK1/2 pathway when Fibulin-2 was overexpressed or silenced. Flow cytometry analyses were used to determine the roles of fibulin-2 in the function of apoptosis and cell cycle. Subcutaneous xenograft mouse models showed the tumor growth pattern after fibulin-2 silence in vivo.

Results: We reported the upregulation of fibulin-2 in most hepatocellular carcinoma tissues and cells lines. Fibulin-2 promoted the proliferation of hepatocellular carcinoma cells in vitro by regulating Ras-MEK-ERK1/2 signaling pathway, whereas knockdown of fibulin-2 incurred the opposite effect on proliferation. Consistently, knockdown of fibulin-2 resulted in increased apoptosis and induced growth arrest during the G0/G1 phase transition. In vivo xenograft assessment confirmed that knockdown of fibulin-2 inhibited hepatocellular carcinoma tumor growth.

Conclusions: Fibulin-2 exhibited tumor promotor activities in malignant progression of hepatocellular carcinoma. The results of the study highlighted the potential of fibulin-2 to be utilized as a promising biomarker and therapeutic target for hepatocellular carcinoma.

Citing Articles

Lung Inflammatory Phenotype in Mice Deficient in Fibulin-2 and ADAMTS-12.

Mohamedi Y, Fontanil T, Vega J, Cobo T, Cal S, Obaya A Int J Mol Sci. 2024; 25(4).

PMID: 38396702 PMC: 10888546. DOI: 10.3390/ijms25042024.

References
1.
Li L, Zhao G, Shi Z, Qi L, Zhou L, Fu Z . The Ras/Raf/MEK/ERK signaling pathway and its role in the occurrence and development of HCC. Oncol Lett. 2016; 12(5):3045-3050. PMC: 5103898. DOI: 10.3892/ol.2016.5110. View

2.
Ramaswamy S, Ross K, Lander E, Golub T . A molecular signature of metastasis in primary solid tumors. Nat Genet. 2002; 33(1):49-54. DOI: 10.1038/ng1060. View

3.
Delire B, Starkel P . The Ras/MAPK pathway and hepatocarcinoma: pathogenesis and therapeutic implications. Eur J Clin Invest. 2015; 45(6):609-23. DOI: 10.1111/eci.12441. View

4.
Lu L, Jiang J, Zhan M, Zhang H, Wang Q, Sun S . Targeting Tumor-Associated Antigens in Hepatocellular Carcinoma for Immunotherapy: Past Pitfalls and Future Strategies. Hepatology. 2020; 73(2):821-832. DOI: 10.1002/hep.31502. View

5.
Yang W, Ma Y, Liu Y, Smith-Warner S, Simon T, Chong D . Association of Intake of Whole Grains and Dietary Fiber With Risk of Hepatocellular Carcinoma in US Adults. JAMA Oncol. 2019; 5(6):879-886. PMC: 6567825. DOI: 10.1001/jamaoncol.2018.7159. View