Gastrin releasing peptidesecreted by The gastrin-releasing peptide receptor (GRPR) is a crucial protein involved in various physiological and pathological processes, particularly in the gastrointestinal and nervous systems, and increasingly recognized for its role in cancer. As a G protein-coupled receptor (GPCR), GRPR mediates the effects of gastrin-releasing peptide (GRP), a neuropeptide that plays a significant role in regulating numerous bodily functionsBB 2 receptor. The overexpression of GRPR in various cancers, including prostate, breast, and small cell lung cancer, has positioned it as a promising target for diagnostic imaging and therapeutic interventions.
The gastrin-releasing peptide receptor, also known by its abbreviation GRPR or as the BB2 receptor, is a transmembrane protein belonging to the bombesin receptor family. It is activated by gastrin-releasing peptide (GRP) and related bombesin-like peptides. GRP itself is a neuropeptide that influences a wide array of functions, including the release of gastrointestinal hormones, regulation of food intake, and sensory perception, such as the transmission of itch signals. The interaction between GRP and GRPR triggers intracellular signaling pathways, leading to diverse cellular responses.
One of the most significant areas of research concerning GRPR is its aberrant overexpression in several types of human cancersGRPR Gene - Ma'ayan Lab – Computational Systems Biology. This includes, but is not limited to, prostate cancer, breast cancer, small cell lung cancer, and head and neck tumorsGastrin-releasing peptide receptor (GRPR) as a novel .... In these malignancies, GRPR signaling can drive tumor growth and metastatic behaviorGRPR. This overexpression makes GRPR an attractive target for developing novel cancer therapies and diagnostic tools. The ability to specifically target GRPR allows for the selective delivery of cytotoxic drugs or imaging agents to cancer cells, potentially minimizing damage to healthy tissuesGastrin-releasing peptide - Wikipedia.
The overexpression of GRPR in various cancers has spurred significant interest in GRPR-targeted cancer therapy.GRPR gastrin-releasing peptide receptor Researchers are developing radioligands and other molecular agents that can bind specifically to GRPR on cancer cells. These agents can be used for molecular imaging, enabling precise visualization and staging of tumors, including the detection of lymph node and bone metastases in prostate cancerStructures of human gastrin-releasing peptide receptors .... Furthermore, these targeted agents can be equipped with therapeutic payloads, such as radioisotopes for targeted radiotherapy or cytotoxic drugs, to directly combat cancer cells.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 ... This dual capability of imaging and therapy, known as theranostics, holds great promise for personalized medicine in oncology.It is present in high concentrations in the stomach where it releases gastrin through bombesin B2 receptors, also known asgastrin releasing peptide receptors, ...
Beyond its role in cancer, GRPR is integral to normal physiological processes. In the gastrointestinal system, it is involved in the regulation of gastrin release, which is essential for digestion. In the central nervous system (CNS), GRP acting through GRPR can modulate feeding behavior and sensory pathwaysGastrin-releasing Peptide R/GRPR Products. Understanding these normal functions is crucial for evaluating potential side effects of GRPR-targeting therapies and for a comprehensive understanding of the receptor's overall biological significance.
While the potential of GRPR as a therapeutic and diagnostic target is substantial, ongoing research continues to refine targeting strategies作者：T Ruginis·2006·被引用次数：56—Gastrin-releasing peptide(GRP) and itsreceptor(GRPR) are aberrantly up-regulated in colon cancer. When expressed, they act as morphogens, retaining tumor .... Developing highly selective ligands that bind effectively to GRPR while minimizing off-target effects remains a key focus. The structural elucidation of human GRPR has provided valuable insights for designing more potent and specific therapeutic agents. Further investigation into the diverse signaling pathways activated by GRPR will also contribute to the development of more sophisticated treatment approaches for cancers that overexpress this receptor.GRP-R | BB2 | GRP-preferring bombesin receptor |Gastrin-releasing peptide receptor|gastrin-releasing peptide receptor. Database Links Click here for help.
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