Related Experiment Video
Updated: May 15, 2026

Characterizing Modulators of Protease-Activated Receptors with a Calcium Mobilization Assay Using a Plate Reader
Published on: May 24, 2024
A patent review of LPAR1 antagonists (2010 - present)
Jiaxing Zhao1, Yuxing Li1, Wangshan Zheng1
1School of Biological and Pharmaceutical Engineering, Lanzhou Jiaotong University, Lanzhou, China.
Introduction:
Lysophosphatidic acid receptor 1 (LPAR1), a G protein-coupled receptor, mediates diverse biological effect. Substantial evidence from human patients and experimental models demonstrates that pathological hyperactivation of LPAR1 in fibroblasts and myofibroblasts contributes to disease progression, establishing it as a key pathological driver in idiopathic pulmonary fibrosis (IPF).
Areas Covered:
This review systematically analyzes peer-reviewed literature retrieved from Web of Science and PubMed, alongside publicly disclosed patents obtained via the IncoPat Patent Search and Analysis platform, covering the period from 2010 to the present. Clinical data were sourced from the Cortellis Drug Discovery Intelligence database.
Expert Opinion:
Small-molecule LPAR1 antagonists show promise as novel therapeutics for IPF, as evidenced by their attenuation of disease progression in two phase II clinical trials. Despite these advancements, LPAR1 antagonist development faces several medicinal chemistry challenges, including the absence of rational structure-based drug design and difficulties in optimizing ADMET properties. Future development avenues include exploring combination therapies, expanding indications, developing long-acting formulations, and investigating novel modalities such as LPAR1-targeting proteolysis-targeting chimeras (PROTACs) and small-interfering RNA (siRNA) therapeutics directed against LPAR1.
Related Concept Videos
Treatment for Pulmonary Arterial Hypertension: Prostacyclin Receptor Agonists
These agonists bind to the IPR receptor situated on the plasma membrane of the pulmonary artery smooth muscle cells. This binding triggers a cascade of reactions known as the GS-AC-cAMP-PKA pathway. This pathway results in the relaxation of smooth muscle...
Treatment for Pulmonary Arterial Hypertension: Endothelin Receptor Antagonists
ETs are synthesized through a complex sequence of enzymatic steps, primarily involving an enzyme referred to as endothelin-converting enzyme (ECE). Of...
Treatment for Pulmonary Arterial Hypertension: Receptor Tyrosine Kinase Inhibitors and Calcium Channel Blockers
TKIs, such as imatinib (Gleevec), are particularly effective in tackling the growth and mitogenic factors that become upregulated in PAH patients. These factors contribute to the...
Structure-Activity Relationships and Drug Design
SAR studies the intricate relationship between a drug's chemical structure and biological activity. It focuses on understanding how modifications to a drug's structure can influence its...
Drug-Receptor Interaction: Antagonist
Antagonists can be classified as competitive or noncompetitive based on their...
Impact of Pharmacokinetic–Pharmacodynamic Models: Regulatory Decisions
