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Updated: Feb 26, 2026

All-optical Mechanobiology Interrogation of Yes-associated Protein in Human Cancer and Normal Cells using a Multi-functional System
Published on: December 20, 2021
Agrin to YAP in Cancer and Neuromuscular Junctions
1Department of Neuroscience and Regenerative Medicine, and Department of Neurology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; Charlie Norwood VA Medical Center, Augusta, GA 30912, USA.
Abstract:
Agrin is utilized by motor neurons to stimulate the LRP4-MuSK receptor in muscles for neuromuscular junction (NMJ) formation. Recent studies of cancer have identified novel functions of the low-density lipoprotein receptor-related protein 4-muscle-specific kinase (LRP4-MuSK) pathway. Agrin may act as a mechanotransduction signal in the extracellular matrix (ECM) to coordinate the cross-talk between the LRP4-MuSK pathway and integrin-focal adhesion pathway. Ensuing Yes-associated protein (YAP) activation promotes hepatocellular carcinoma (HCC). Here, we discuss the implications of the converged pathways in NMJ formation and liver cancer.
Insights
Agrin signaling is crucial for neuromuscular junction (NMJ) formation and may drive liver cancer progression. This study explores the dual role of the LRP4-MuSK pathway in both processes.
Area of Science:
- Neuroscience
- Molecular Biology
- Oncology
Background:
- Agrin and the low-density lipoprotein receptor-related protein 4-muscle-specific kinase (LRP4-MuSK) pathway are essential for neuromuscular junction (NMJ) formation.
- The LRP4-MuSK pathway has recently been implicated in various cancer types.
- Extracellular matrix (ECM) signaling and mechanotransduction are increasingly recognized as critical in both development and disease.
Purpose of the Study:
- To explore the novel functions of the LRP4-MuSK pathway in cancer.
- To discuss the potential role of Agrin as a mechanotransduction signal coordinating ECM pathways.
- To elucidate the implications of converged signaling pathways in NMJ formation and hepatocellular carcinoma (HCC).
Main Methods:
- Literature review and pathway analysis.
- Exploration of molecular crosstalk between ECM, LRP4-MuSK, and integrin-focal adhesion pathways.
- Discussion of downstream effectors such as Yes-associated protein (YAP).
Main Results:
- Agrin's role extends beyond NMJ formation, potentially influencing cancer.
- Convergence of LRP4-MuSK and integrin signaling pathways is proposed.
- YAP activation downstream of these pathways may promote HCC development.
Conclusions:
- The LRP4-MuSK pathway plays a significant role in both physiological processes (NMJ formation) and pathological conditions (HCC).
- Agrin-mediated mechanotransduction could be a key factor linking ECM dynamics to cancer progression.
- Further research into this pathway crosstalk may reveal novel therapeutic targets for liver cancer.
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