gastrin-releasing peptide receptor grpr - Gastrin releasing peptidesecreted by Gastrin The Multifaceted Role of the Gastrin-Releasing Peptide Receptor (GRPR)

BB2receptor The gastrin-releasing peptide receptor (GRPR), also known as the BB2 receptor or GRP-R, is a crucial G protein-coupled receptor (GPCR) that plays a significant role in various physiological processes, particularly within the gastrointestinal and central nervous systems. Its involvement extends beyond normal bodily functions, with aberrant overexpression linked to several types of cancer, making it a compelling target for diagnosis and therapy. This article delves into the intricate functions of the gastrin-releasing peptide receptor, its role in health and disease, and the burgeoning research into its therapeutic potential.

Understanding Gastrin-Releasing Peptide and its Receptor

Gastrin-releasing peptide (GRP) is a neuropeptide that acts as a ligand for the gastrin-releasing peptide receptor. GRP itself is a bombesin-like peptide, originally isolated from frog skinGRP acts by binding to the GRP receptor (GRPR, also called BB2), located on cell membranes. ... In the central nervous system (CNS), GRP may act as a transmitter .... In mammals, GRP is primarily produced by G cells in the stomach and by neurons in the gastrointestinal tract and the central nervous system (CNS). The gastrin-releasing peptide receptor is a transmembrane protein that, upon binding to GRP, initiates intracellular signaling cascades, notably activating phospholipase C signaling pathways. This activation is critical for mediating the diverse effects of GRP.作者：RS Czepielewski·2012·被引用次数：107—We propose that GRP triggers neutrophil recruitment both indirectly, through macrophages, as well as directly, binding to GRPR in these cells.

Physiological Functions of GRPR

The gastrin-releasing peptide receptor is instrumental in regulating a wide array of functions:

* Gastrointestinal Regulation: In the stomach, GRP binding to gastrin-releasing peptide receptors stimulates the release of gastrin, a hormone essential for digestion. GRP also influences gastric acid secretion, pancreatic secretion, and gastrointestinal motility. The receptor's presence in high concentrations in the stomach underscores its importance in digestive processes.Contributes to the regulation of food intake. Contributes to the perception of prurient stimuli and transmission of itch signals in the spinal cord that promote ...

* Central Nervous System Activity: Within the CNS, gastrin-releasing peptide acts as a neurotransmitter or neuromodulatorConsequence of Gastrin-Releasing Peptide Receptor .... The gastrin-releasing peptide receptor is involved in the regulation of food intake, contributing to appetite control作者：H Zhang·2024·被引用次数：26—This comprehensive review aims to explore the potential applications ofGastrin-releasing peptide receptor(GRPR) in the diagnosis and treatment of prostate .... Furthermore, it plays a role in the perception of prurient stimuli and the transmission of itch signals in the spinal cord, promoting scratching behavior.

* Neutrophil Recruitment: Emerging research suggests that gastrin-releasing peptide receptor (GRPR) can mediate neutrophil recruitment. GRP, binding to GRPR in these cells, may trigger an inflammatory response, as proposed in studies investigating its role in neutrophil-macrophage interactions.2025年11月25日—Gastrin-releasing peptide receptoris expressed in the vast majority of lymph node metastases and in 52.9% of bone metastases of prostate cancer ...

GRPR in Cancer: A Double-Edged Sword

One of the most significant areas of research concerning the gastrin-releasing peptide receptor is its aberrant overexpression in various human cancers.Development of Novel Gastrin-Releasing Peptide Receptor ... This makes GRPR a promising biomarker and therapeutic target.2014年2月1日—The GRP-R is a G-protein coupledreceptor(GPCR) which activates phospholipase C signaling pathways. The GRP-R is expressed in numerous cancers ...

* Prostate Cancer: GRPR is notably overexpressed in a vast majority of lymph node metastases and a significant percentage of bone metastases of prostate cancer. This overexpression is also observed in primary prostate tumorsGRPR gastrin-releasing peptide receptor. The GRPR gene is thus being investigated for its utility in imaging and therapy for all stages of prostate cancer.

* Breast Cancer: Similar to prostate cancer, gastrin-releasing peptide receptor is overexpressed in various breast cancer subtypes, presenting another avenue for targeted interventions.Gastrin-Releasing Peptide Receptor Imaging and Therapy in ...

* Other Cancers: The gastrin-releasing peptide receptor is also implicated in other malignancies, including small cell lung cancer, head and neck tumors, and colon cancer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– .... In colon cancer, both GRP and its receptor, GRPR, are aberrantly up-regulated and can act as morphogens, influencing tumor behavior.

* Therapeutic Potential: The targeted delivery of cytotoxic drugs, such as daunorubicin, to prostate and breast cancer cells by targeting GRPR has demonstrated significant promise in preclinical studies.GRPR(Gastrin Releasing Peptide Receptor) is a Protein Coding gene. Diseases associated withGRPRinclude Autism Spectrum Disorder and Agoraphobia. Among its ... Furthermore, GRPR is considered an attractive target for cancer radiotheranostics, a field that combines nuclear imaging with targeted radiation therapy for diagnostics and treatment. The development of novel gastrin-releasing peptide receptor targeting agents is a rapidly advancing area of researchGastrin-releasing peptide receptor - Mus musculus (Mouse).

Diverse Applications and Research Avenues

The multifaceted nature of the gastrin-releasing peptide receptor has spurred research across various disciplines:

* Molecular Imaging: The overexpression of GRPR in tumors makes it an excellent target for molecular imaging. This allows for the visualization and assessment of tumor burden and metastatic spread using specific imaging agents that bind to the receptor.Gastrin-Releasing Peptide Receptor - an overview Research is focusing on GRPR-targeted molecular imaging for a range of cancers.

* Structural Biology: Understanding the precise three-dimensional structure of the gastrin-releasing peptide receptor is crucial for designing highly selective and effective therapeutic agents作者：J Gomena·2023·被引用次数：25—We report on the in vitro and in vivo selective delivery of the cytotoxic drug daunorubicin to prostate and breast cancer, by targeting GRP-R.. Crystal structures of human gastrin-releasing peptide receptors have been determined, providing invaluable insights into receptor-ligand interactions and conformational states.

* Genetics and Disease Association: While primarily studied in cancer, the GRPR gene has also been associated with other conditions, including Autism Spectrum Disorder and Agoraphobia, suggesting a broader role for this receptor system in human health作者：DB Olguins·2025—Thegastrin-releasing peptide receptor(GRPR) is expressed across multiple human cancer types, including head and neck tumors, ....

* Drug Development: The identification and stabilization of highly selective gastrin-releasing peptide receptor modulators are ongoing efforts.In oncology,GRPRoverexpression and signaling drive tumor growth and metastatic behavior via transactivation of receptor tyrosine kinases and associated ... These efforts aim to develop novel therapies that specifically target cancer cells while minimizing off-target effects.作者：A Hirooka·2021·被引用次数：21—Bombesin is a putative antibacterialpeptideisolated from the skin of the frog, Bombina bombina. Two related (bombesin-like)peptides, ...

In conclusion, the gastrin-releasing peptide receptor is a vital component of cellular signaling with profound implications for both normal physiology and disease pathology.Physiology, Gastrin - StatPearls - NCBI Bookshelf Its prominent role in cancer, coupled with its involvement in crucial physiological processes like digestion and itch sensation, positions it as a key focus for ongoing scientific investigation and the development of innovative diagnostic and therapeutic strategies. The continued exploration of gastrin-releasing peptide and its receptor promises to unlock new avenues for personalized medicine and improved patient outcomes.