gastrin-releasing peptide receptor Gastrinreleasing peptide receptor - Gastrin releasing peptidesecreted by Gastrin The Gastrin-Releasing Peptide Receptor: A Crucial Player in Physiology and Disease

Bombesin The gastrin-releasing peptide receptor (GRPR), also known as the BB2 receptor or GRP-R, is a pivotal G protein-coupled receptor (GPCR) that plays a significant role in various physiological processes and has emerged as a critical target in the diagnosis and treatment of several diseases, particularly cancersThis gene encodes a multipass membrane protein that functions as areceptorforGastrin releasing peptide. Signalling through thisreceptoris important in .... This receptor mediates the actions of gastrin-releasing peptide (GRP), a neuropeptide primarily produced in the gastrointestinal tract and central nervous system (CNS). The intricate signaling pathways activated by GRP binding to the gastrin-releasing peptide receptor are fundamental to functions ranging from gastrin release and food intake regulation to the transmission of itch signals.Receptorforgastrin-releasing peptide(GRP) (PubMed:12526815, PubMed:1671171, PubMed:1707129, PubMed:26658875, PubMed:9345264).

GRPR is a transmembrane protein, characterized by its seven transmembrane domains, typical of the GPCR superfamily. Upon binding of gastrin-releasing peptide, the GRPR undergoes a conformational change, leading to the activation of intracellular signaling cascadesIn oncology,GRPRoverexpression and signaling drive tumor growth and metastatic behavior via transactivation of receptor tyrosine kinases and associated .... One of the key pathways involved is the activation of phospholipase C, which ultimately influences cellular processes such as proliferation, survival, and differentiation. This complex molecular interaction underscores the importance of the gastrin-releasing peptide receptor in cellular communication.

Physiological Roles of the Gastrin-Releasing Peptide Receptor

In the gastrointestinal system, gastrin-releasing peptide acts through GRPR to stimulate the release of gastrin, a hormone essential for regulating gastric acid secretion and mucosal growth. This interaction is crucial for maintaining digestive health. Beyond the gut, GRPR is prominently expressed in the central nervous system, where gastrin-releasing peptide acts as a neurotransmitter or neuromodulator. Here, it contributes to the regulation of food intake and plays a role in sensory perception, including the transmission of itch signals in the spinal cord that promote scratching behaviorStructures of human gastrin-releasing peptide receptors .... The involvement of GRPR in these diverse physiological functions highlights its broad impact on bodily homeostasis.

GRPR as a Target in Cancer Therapy and Diagnosis

A significant area of research and clinical interest revolves around the aberrant expression and signaling of the gastrin-releasing peptide receptor in various types of cancer. GRPR is found to be overexpressed in a wide array of human malignancies, including prostate cancer, breast cancer, small cell lung cancer, and head and neck tumorsExpression ofgastrin-releasing peptide receptorin epidermoid carcinoma of the anal canal. · Annotation. GRPR is highly expressed in epidermoid carcinoma of .... This overexpression makes GRPR an attractive target for developing novel diagnostic and therapeutic strategies.GRPR(Gastrin Releasing Peptide Receptor) is a Protein Coding gene. Diseases associated withGRPRinclude Autism Spectrum Disorder and Agoraphobia. Among its ...

In prostate cancer, GRPR is particularly abundant, especially in metastatic lesions, with expression noted in the vast majority of lymph node metastases and a significant percentage of bone metastases.GRPR Gene - Ma'ayan Lab – Computational Systems Biology This makes GRPR a valuable biomarker for assessing disease progression and extent. Furthermore, the ability to target GRPR offers a promising avenue for cancer radiotheranostics, which combine nuclear imaging for precise diagnosis with targeted radiotherapy for treatment. Researchers are developing novel gastrin-releasing peptide receptor targeting agents for these dual purposes, aiming to improve both the visualization and eradication of cancerous cells.

The targeting of GRPR has also shown potential in breast cancer and other tumorsGastrin-Releasing Peptide Receptor Imaging and Therapy in .... Studies have reported the selective delivery of cytotoxic drugs, such as daunorubicin, to prostate and breast cancer cells by targeting GRPR作者：C Morgat·2025·被引用次数：3—Thegastrin-releasing peptide receptor(GRPR) is overexpressed in various cancers, including prostate cancer, breast cancer, small cell and non– .... This targeted approach aims to minimize damage to healthy tissues, thereby reducing side effects associated with conventional chemotherapy.It is present in high concentrations in the stomach where it releases gastrin through bombesin B2 receptors, also known asgastrin releasing peptide receptors, ... The development of highly selective gastrin-releasing peptide receptor antagonists and agonists is a key focus in this field, aiming to enhance the efficacy and safety of GRPR-based therapies.

The Gastrin-Releasing Peptide Receptor System and Related Peptides

The gastrin-releasing peptide receptor belongs to the bombesin receptor family. Bombesin, a peptide originally isolated from frog skin, shares structural similarities with gastrin-releasing peptide and binds to GRPR with high affinity. This has led to the use of bombesin analogs in imaging and therapeutic applications targeting GRPR. The broader gastrin-releasing peptide / bombesin system involves a network of peptides and receptors that influence various biological processes.Targeting the Gastrin-Releasing Peptide Receptor (GRP-R ... Understanding the interactions within this system, including the roles of different peptides, is crucial for advancing GRPR-targeted research.

Genetic Basis and Associated Diseases

The GRPR gene encodes the gastrin-releasing peptide receptor. While often associated with cancer, variations in the GRPR gene have also been linked to other conditions, including Autism Spectrum Disorder and Agoraphobia. This suggests a broader physiological and neurological role for the receptor beyond its prominent function in oncology.Identification and stabilization of a highly selective gastrin‐ ...

In conclusion, the gastrin-releasing peptide receptor (GRPR) is a multifaceted protein with significant implications for both normal physiological functions and disease pathogenesis. Its widespread overexpression in various cancers, coupled with its role in essential bodily processes, positions it as a critical target for the development of innovative diagnostic tools and personalized therapeutic interventions. Continued research into the complex biology of GRPR and its associated peptides holds immense promise for improving patient outcomes in oncology and beyond.In oncology,GRPRoverexpression and signaling drive tumor growth and metastatic behavior via transactivation of receptor tyrosine kinases and associated ...