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Review
. 2023 May:161:114497.
doi: 10.1016/j.biopha.2023.114497. Epub 2023 Mar 16.

Novel insight on GRP/GRPR axis in diseases

Hao-Lu Sun  1 , Qiu-Ying Ma  2 , He-Ge Bian  1 , Xiao-Ming Meng  3 , Juan Jin  4
Affiliations
Free article
Review

Novel insight on GRP/GRPR axis in diseases

Hao-Lu Sun et al. Biomed Pharmacother. 2023 May.
Free article

Abstract

The gastrin-releasing peptide receptor (GRPR), a member of the G protein-coupled receptors (GPCRs), binds to ligands such as gastrin-releasing peptide (GRP) and plays a variety of biological roles. GRP/GRPR signalling is involved in the pathophysiological processes of many diseases, including inflammatory diseases, cardiovascular diseases, neurological diseases, and various cancers. In the immune system, the unique function of GRP/GRPR in neutrophil chemotaxis suggests that GRPR can be directly stimulated through GRP-mediated neutrophils to activate selective signalling pathways, such as PI3K, PKC, and MAPK, and participate in the occurrence and development of inflammation-related diseases. In the cardiovascular system, GRP increases intercellular adhesion molecule 1 (ICAM-1) and induces vascular cell adhesion molecule-1 (VCAM-1). GRP activates ERK1/2, MAPK, and AKT, leading to cardiovascular diseases, including myocardial infarction. Central nervous system signal transduction mediated by the GRP/GRPR axis plays a vital role in emotional responses, social interaction, and memory. The GRP/GRPR axis is elevated in various cancers, including lung, cervical, colorectal, renal cell, and head and neck squamous cell carcinomas. GRP is a mitogen in a variety of tumour cell lines. Its precursor, pro-gastrin-releasing peptide (ProGRP), may play an important role as an emerging tumour marker in early tumour diagnosis. GPCRs serve as therapeutic targets for drug development, but their function in each disease remains unclear, and their involvement in disease progression has not been well explored or summarised. This review lays out the above mentioned pathophysiological processes based on previous research conclusions. The GRP/GRPR axis may be a potential target for treating multiple diseases, and the study of this signalling axis is particularly important.

Keywords: Cancers; Cardiovascular diseases; GRP/GRPR axis; Inflammation diseases; Kidney diseases; Neurological diseases.

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Conflict of interest statement

Conflict of interest statement We claim that we do not have any conflict of interest regarding this review！.

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