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Published on: October 24, 2015
Emerging Roles of G Protein-Coupled Receptors in Hepatocellular Carcinoma
Wen-Ting Peng1,2,3, Wu-Yi Sun4,5,6, Xin-Ran Li7,8,9
1Institute of Clinical Pharmacology, Anhui Medical University, Hefei 230032, China. Wendy765138970@126.com.
Abstract:
Among a great variety of cell surface receptors, the largest superfamily is G protein-coupled receptors (GPCRs), also known as seven-transmembrane domain receptors. GPCRs can modulate diverse signal-transduction pathways through G protein-dependent or independent pathways which involve β-arrestins, G protein receptor kinases (GRKs), ion channels, or Src kinases under physiological and pathological conditions. Recent studies have revealed the crucial role of GPCRs in the tumorigenesis and the development of cancer metastasis. We will sum up the functions of GPCRs—particularly those coupled to chemokines, prostaglandin, lysophosphatidic acid, endothelin, catecholamine, and angiotensin—in the proliferation, invasion, metastasis, and angiogenesis of hepatoma cells and the development of hepatocellular carcinoma (HCC) in this review. We also highlight the potential avenues of GPCR-based therapeutics for HCC.
Insights
G protein-coupled receptors (GPCRs) are crucial in liver cancer (hepatocellular carcinoma, HCC) development and metastasis. This review explores GPCR functions and potential GPCR-based therapies for HCC.
Area of Science:
- Molecular Biology
- Oncology
- Pharmacology
Background:
- G protein-coupled receptors (GPCRs), the largest cell surface receptor superfamily, regulate diverse signaling pathways.
- GPCRs play critical roles in both physiological processes and pathological conditions, including cancer.
- Emerging evidence highlights the involvement of GPCRs in tumorigenesis and cancer metastasis.
Purpose of the Study:
- To review the multifaceted roles of specific GPCRs in hepatocellular carcinoma (HCC) progression.
- To elucidate the involvement of GPCRs in hepatoma cell proliferation, invasion, metastasis, and angiogenesis.
- To highlight potential therapeutic strategies targeting GPCRs for HCC treatment.
Main Methods:
- Literature review of studies investigating GPCR function in hepatocellular carcinoma.
- Analysis of GPCR signaling pathways implicated in cancer cell behavior.
- Summary of research on specific GPCRs (chemokine, prostaglandin, lysophosphatidic acid, endothelin, catecholamine, angiotensin) in HCC.
Main Results:
- Specific GPCRs significantly influence hepatoma cell proliferation, invasion, and metastasis.
- GPCRs are implicated in the angiogenesis of hepatocellular carcinoma.
- Dysregulation of GPCR signaling contributes to HCC development and progression.
Conclusions:
- GPCRs represent key regulators in the development and metastasis of hepatocellular carcinoma.
- Targeting specific GPCRs offers promising therapeutic avenues for HCC treatment.
- Further research into GPCR-mediated pathways is essential for advancing HCC therapy.
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