| 2017 |
GFRAL is the high-affinity receptor for GDF15; GDF15 binds GFRAL and genetic deletion of GFRAL abrogates GDF15-induced decreases in food intake and body weight in mice, establishing GFRAL as the bona fide receptor mediating metabolic effects of GDF15. |
Radioligand binding assay, GFRAL knockout mice, recombinant GDF15 administration |
Nature medicine |
High |
28846097 28846098 28846099
|
| 2017 |
GFRAL requires association with the coreceptor RET to elicit intracellular signaling in response to GDF15 stimulation; GDF15-induced cell signaling requires the GFRAL-RET interaction. |
Cell-based signaling assays, co-receptor requirement demonstrated by loss-of-function and reconstitution experiments |
Nature medicine |
High |
28846097 28846098 28846099
|
| 2017 |
Gfral mRNA is expressed specifically in neurons of the area postrema and nucleus of the solitary tract in the hindbrain (mouse, rat, monkey, human), and not in peripheral tissues, indicating GDF15-GFRAL regulation of food intake operates via a central mechanism. |
In situ hybridization, mRNA expression profiling, immunohistochemistry across species |
Nature medicine |
High |
28846097 28846098 28846099
|
| 2017 |
Diet-induced obesity and insulin resistance are exacerbated in GFRAL-deficient mice, indicating a homeostatic role for GFRAL in metabolism. |
Gfral knockout mouse model, high-fat diet challenge, metabolic phenotyping |
Nature medicine |
High |
28846097
|
| 2005 |
GFRAL (GRAL-A) protein localizes predominantly to the plasma membrane; overexpression of GFRAL-A protected PC12 cells and cultured hippocampal neurons from serum starvation-induced apoptosis, associated with inhibition of the JNK signaling pathway. |
Subcellular fractionation/immunofluorescence for localization; cell viability assays and JNK pathway analysis for neuroprotective function |
Journal of neurochemistry |
Medium |
16086688
|
| 2005 |
GFRAL (GRAL) has two splice variants: full-length GRAL-A (2080 bp mRNA) and short GRAL-B (1833 bp mRNA), with primary CNS expression in adult mouse; GRAL-A shares ~30% amino acid identity with GFRα-3. |
cDNA cloning, sequence analysis, Northern blot/RT-PCR expression profiling |
Journal of neurochemistry |
Medium |
16086688
|
| 2020 |
Antagonistic monoclonal antibody 3P10 targeting GFRAL inhibits RET signaling by preventing the GDF15-driven interaction of RET with GFRAL on the cell surface; activation of the GFRAL-RET pathway induces expression of lipid metabolism genes in adipose tissue; peripheral chemical sympathectomy and loss of adipose triglyceride lipase protect mice from GDF15-induced weight loss, revealing a peripheral sympathetic axis by which GDF15 elicits lipolytic responses independently of anorexia. |
Antagonistic monoclonal antibody, RET signaling assays, sympathectomy, ATGL knockout mice, gene expression profiling in adipose tissue |
Nature medicine |
High |
32661391
|
| 2021 |
Artificial activation of GFRAL-expressing neurons inhibited feeding, decreased gastric emptying, and promoted conditioned taste aversion (CTA). GFRAL neurons most strongly innervate the parabrachial nucleus targeting CGRP-expressing neurons, and silencing CGRPPBN neurons abrogated the aversive and anorexic effects of GDF-15, placing GFRAL neurons upstream of CGRPPBN in an aversive pathway. |
Chemogenetic activation (DREADD) of GFRAL neurons, conditional Gfral mice, TRAP-seq, CTA assay, CGRPPBN neuron silencing |
Proceedings of the National Academy of Sciences of the United States of America |
High |
33593916
|
| 2019 |
Localized AAV-shRNA knockdown of GFRAL in the area postrema and nucleus of the solitary tract of mice commencing high-fat diet caused increased body weight and adiposity proportional to the degree of GFRAL knockdown, confirming AP/NTS as the major CNS site of GDF15 action. |
AAV-shRNA regional knockdown, quantitative immunohistochemistry, metabolic phenotyping |
International journal of obesity (2005) |
Medium |
31152154
|
| 2022 |
Membrane-bound MT1-MMP (MMP14) proteolytically inactivates GFRAL in GFRAL+ neurons; overnutrition-induced obesity increased MT1-MMP activation which suppressed GDF15-GFRAL signaling. Genetic ablation of MT1-MMP specifically in GFRAL+ neurons restored GFRAL expression and reduced weight gain. Depletion of GFRAL abolished the anti-obesity effects of MT1-MMP inhibition. |
Cell-specific conditional KO (MT1-MMP in GFRAL+ neurons), proteolytic cleavage assay, GFRAL KO epistasis, in vivo obesity models |
Nature metabolism |
High |
35177851
|
| 2024 |
Direct acute infusion of GDF15 into the area postrema increased intravenous glucose tolerance and insulin sensitivity and lowered hepatic glucose production independently of food intake, weight, and plasma insulin; knockdown of GFRAL in the area postrema negated these effects and also negated metformin-induced glucose tolerance improvement. |
Intracranial infusion, GFRAL knockdown in area postrema, hyperinsulinemic-euglycemic clamp, conscious unrestrained rat model |
Diabetes |
Medium |
38064571
|
| 2024 |
Cell-specific acute activation of GFRAL+ neurons caused hypothermia, torpor-like state, release of stress hormones, shift from glucose to lipid oxidation, impaired insulin sensitivity and glucose tolerance, decreased skeletal muscle glucose uptake, but augmented visceral fat glucose uptake. |
Chemogenetic and optogenetic activation of GFRAL+ neurons, metabolomics, transcriptomics, glucose uptake assays |
Cell reports |
Medium |
38507407
|
| 2022 |
In a mouse model of muscle-specific mitochondrial dysfunction, GFRAL is required for systemic energy metabolism via daytime-restricted anorexia; GFRAL signaling mediates hypothalamic corticotropin-releasing hormone induction (without elevated corticosterone) and governs anxiety-like behavior. |
GFRAL KO crossed with muscle mitochondrial dysfunction mouse model, behavioral assays, hypothalamic gene expression analysis |
Life science alliance |
Medium |
36271504
|
| 2022 |
A neutralizing monoclonal antibody to GFRAL prevented cisplatin-induced decrease in wheel running (fatigue behavior) in mice, demonstrating that the GDF15/GFRAL axis mediates chemotherapy-induced fatigue. |
Anti-GFRAL neutralizing antibody, voluntary wheel running assay, mGDF15-Fc administration |
Brain, behavior, and immunity |
Medium |
36427806
|
| 2020 |
In endothelial cells, MIC-1/GDF15 promotes angiogenesis via MEK/ERK- and PI3K/Akt-dependent pathways; siRNA knockdown of GFRAL abrogated these MIC-1 signaling events, identifying GFRAL as an endothelial cell receptor for MIC-1. |
siRNA knockdown of GFRAL in endothelial cells, angiogenesis assays, signaling pathway analysis (MEK/ERK, PI3K/Akt) |
Journal of cellular physiology |
Medium |
33151561
|
| 2020 |
In pancreatic ductal adenocarcinoma cells, GFRAL mediates GDF-15-induced tumor cell proliferation and metastasis; overexpression of GFRAL in pancreatic cancer cells enhanced GDF-15 biological effects. |
GFRAL overexpression, GDF-15 knockdown, xenotransplantation in nude mice, in vitro proliferation assays |
Aging |
Low |
33201838
|
| 2023 |
GDF-15 inhibits ADP-induced human platelet aggregation through binding to GFRAL on platelets and signaling via the GFRAL/RET complex, inhibiting AKT and ERK activation; immunoprecipitation confirmed GFRAL as the binding partner of GDF-15 on platelets. |
Platelet aggregation assay, receptor microarray, immunoprecipitation, ERK/AKT pathway analysis, RET agonist/inhibitor experiments |
Biomolecules |
Low |
38254638
|
| 2023 |
A peptide antagonist of GFRAL (GRASP) developed by library screening binds GFRAL (confirmed by surface plasmon resonance and flow cytometry) and blocks GDF15-mediated RET recruitment; in vivo GRASP attenuated GDF15-induced nausea and anorexia in rats. |
Peptide library screen, surface plasmon resonance, flow cytometry, in vivo rat anorexia model |
Journal of medicinal chemistry |
Medium |
37506293
|
| 2023 |
GDF15 C-terminal peptide fragments bind the extracellular domain of GFRAL (SPOT arrays) and inhibit GFRAL activity in cells expressing the GFRAL/RET receptor complex in the micromolar range, identifying the C-terminus of GDF15 as the GFRAL-binding region. |
SPOT peptide arrays, solid-phase peptide synthesis, functional cell assays with GFRAL/RET-expressing cells |
Peptides |
Medium |
37495041
|
| 2024 |
BDNFmNTS neurons in the medial nucleus of the tractus solitarius are required downstream of GFRAL/GLP1R neurons for weight-reducing actions of GDF15; acute activation of BDNFmNTS neurons is sufficient to reduce food intake and drive fatty acid oxidation. |
Genetic ablation of BDNFmNTS neurons, chemogenetic activation, GDF15 and Exendin-4 treatment, metabolic phenotyping |
Nature communications |
Medium |
39737892
|
| 2026 |
GDF15 suppresses autoimmune T cell responses through GFRAL activation on brainstem neurons, leading to β-adrenergic signaling and norepinephrine synthesis in the spleen, which decreases integrin expression on T cells required for blood-brain barrier transmigration; chemogenetic activation of GFRAL+ neurons recapitulated these neuroimmune effects. |
GDF15 KO mice, recombinant GDF15, neuronal gene delivery, chemogenetic activation of GFRAL+ neurons, norepinephrine measurement, integrin expression analysis, preclinical MS models |
Nature immunology |
Medium |
41540266
|
| 2025 |
Bicyclic peptide tandems mimicking homodimeric GDF15 bind GFRAL with picomolar affinity and inhibit GDF15-GFRAL protein-protein interaction to prevent RET-induced intracellular signaling, as confirmed in a functional cell signaling assay; structural data guided conversion of monomeric hits to tandem molecules. |
Phage display, structure-guided design, binding affinity measurement, functional cell signaling assay, pharmacokinetic analysis |
Journal of medicinal chemistry |
Medium |
41066664
|
| 2024 |
GFRAL expression, assessed using Gfral:eGFP reporter mice, single-molecule FISH, and scRNA-seq, is overwhelmingly restricted to the brainstem AP/NTS; Gfral-labelled cells were not reliably detected in other brain regions or peripheral tissues using three independent detection methods. |
Gfral:eGFP reporter mice, single-molecule fluorescence in situ hybridization (smFISH), scRNA-seq of human tissues |
Molecular metabolism |
High |
39608751
|
| 2025 |
In melanoma cells, CAF-derived GDF15 binds GFRAL, promoting RET phosphorylation and downstream signaling that increases tumor cell stemness and secretion of CCL18 and TGF-β, inducing macrophage M2 polarization; confirmed by co-immunoprecipitation. |
Co-immunoprecipitation, chromatin immunoprecipitation, luciferase reporter assay, lentiviral transfection, flow cytometry, recombinant protein rescue, Cre-loxP KO mice |
Journal for immunotherapy of cancer |
Low |
40555562
|
| 2024 |
GFRAL silencing by shRNA in the area postrema/NTS of ALS model mice (hSOD1G93A) induced weight gain, reduced adipose tissue wasting, ameliorated motor function and muscle atrophy, and prolonged survival; microglial depletion reduced brainstem GDF15 expression and lipolytic gene expression in adipose tissue, suggesting microglial involvement in mediating GFRAL-dependent effects. |
shRNA regional knockdown, PLX5622 microglial depletion, body weight and motor function assays, lipolytic gene expression analysis |
Brain, behavior, and immunity |
Medium |
39672239
|