LPAR3

LPAR3 or Lysophosphatidic Acid Receptor 3 is a protein that in humans is encoded by the LPAR3 gene. It is a member of the G protein-coupled receptor family and plays a crucial role in several biological processes, including cell proliferation, cell differentiation, and apoptosis.

Function

LPAR3 is a receptor for lysophosphatidic acid (LPA), a bioactive lipid mediator that influences various biological functions. LPA receptors are involved in many physiological and pathological processes, including embryo implantation, cell migration, neurogenesis, and cancer metastasis. LPAR3, in particular, has been implicated in the regulation of immune responses and inflammation.

Structure

The LPAR3 protein is a seven-transmembrane receptor, characteristic of the G protein-coupled receptor family. It is primarily located on the cell membrane, where it interacts with its ligand, LPA.

Clinical Significance

Alterations in the LPAR3 gene have been associated with several diseases, including ovarian cancer, asthma, and rheumatoid arthritis. In ovarian cancer, overexpression of LPAR3 has been linked to increased tumor aggressiveness and poor prognosis. In asthma and rheumatoid arthritis, variations in the LPAR3 gene may influence disease susceptibility and severity.

Research

Research on LPAR3 is ongoing, with studies focusing on its role in disease progression and potential as a therapeutic target. For example, drugs that block LPAR3 activity may be useful in treating conditions like ovarian cancer and inflammatory diseases.

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