| 2003 |
Chronic intracerebroventricular NPY infusion induces hyperphagia and obesity in mice lacking either Npy1r or Npy5r, demonstrating biological redundancy between Y1 and Y5 receptor signaling in NPY-mediated control of food intake. |
Chronic ICV NPY infusion in Npy1r and Npy5r knockout mice with measurement of food intake, fat pad weight, and plasma hormones |
Endocrinology |
High |
14525913
|
| 2020 |
Maternal deprivation increases Npy1r expression in medial prefrontal cortex neurons; pharmacological blockade of NPY1R signaling during electrophysiological recordings demonstrated that NPY1R enhances GABAergic currents in care-deprived mice, linking NPY1R to inhibitory synaptic control of prefrontal circuits. |
RNAseq for gene expression, electrophysiological recordings with NPY1R antagonist in maternally deprived mice |
Neuropsychopharmacology |
High |
32492699
|
| 2020 |
Conditional inactivation of Npy1r in forebrain excitatory neurons (limbic system) causes sex-dependent metabolic and behavioral phenotypes: male knockout mice show HPA axis hyperactivation, anxiety, reduced body weight, and reduced WAT mass, while female knockouts show increased WAT and compensatory reduction of AgRP in the arcuate nucleus, indicating estrogen-dependent resilience mechanisms. |
Conditional knockout mice (Npy1rrfb), behavioral testing, HPA axis measurements, WAT weighing, immunohistochemistry for AgRP |
Hormones and behavior |
High |
32755609
|
| 2018 |
Conditional inactivation of Npy1r in Y5R-containing neurons causes impaired behavioral flexibility (reversal learning), decreased serotonergic fibers in orbitofrontal cortex (OFC), and increased baseline OFC pyramidal neuron activity; escitalopram treatment normalized OFC activity and restored behavioral flexibility, placing NPY1R-Y5R co-expression upstream of OFC serotonergic tone regulation. |
Conditional knockout (Npy1rY5R-/- mice), Morris water maze and water T-maze reversal tasks, c-Fos immunohistochemistry, 5-HT fiber quantification, escitalopram pharmacological rescue |
Neuropharmacology |
High |
29353053
|
| 2023 |
Spinal dorsal horn NPY1R-expressing interneurons (Y1-INs) are necessary for neuropathic hypersensitivity after peripheral nerve injury; Y1-INs segregate into three subpopulations (Grp/Npy1r, Npff/Npy1r, Cck/Npy1r), and specifically Grp/Npy1r interneurons mediate neuropathic pain analgesia by intrathecal Y1 agonist [Leu31,Pro34]-NPY. |
Fluorescence in situ hybridization (FISH) for subpopulation characterization, chemogenetic inhibition (DREADDs), conditional Npy1r deletion from CCK-INs and NPFF-INs, intrathecal Y1 agonist administration in peripheral nerve injury models |
JCI insight |
High |
37824208
|
| 2020 |
MCM3AP-AS1 lncRNA recruits DNMT1/DNMT3A/DNMT3B to the NPY1R promoter, promoting its methylation and transcriptional silencing, thereby activating the MAPK pathway to promote prostate cancer cell proliferation, invasion, and migration. |
RNA immunoprecipitation, RNA pull-down, chromatin immunoprecipitation (ChIP), methylation-specific PCR, lentiviral overexpression/knockdown, xenograft tumor model |
Molecular therapy. Nucleic acids |
High |
32193153
|
| 2022 |
NPY1R mediates the inhibitory action of NPY on estradiol-stimulated growth of ER-positive breast cancer cells; NPY treatment reduced estradiol-stimulated cell growth, an effect reversed by NPY1R antagonist BIBP-3226. |
Pharmacological antagonism with BIBP-3226, NPY treatment of ER+ BC cells, xenograft models, proteogenomics |
Scientific reports |
Medium |
35121782
|
| 2025 |
Pancreas-specific and whole-body knockout of Npy1r significantly decreases liver metastasis in a genetically engineered mouse model of pancreatic cancer (KPR172HC); NPY1R antagonist BIBO3304 reduces migratory capacity on cell-derived matrices and decreases liver metastasis in an intrasplenic metastasis model. |
Conditional and whole-body Npy1r knockout in autochthonous KPR172HC mouse model, pharmacological inhibition with BIBO3304, intrasplenic metastasis model, migration assays |
Science advances |
High |
40073121
|
| 2025 |
NPY dose-dependently attenuates lipolysis and cAMP signaling in primary human subcutaneous adipocytes via NPY1R; adipocyte NPY1R expression is reduced after weight loss and correlates positively with body fat percentage, acting as a cell-autonomous brake on lipolysis. |
Single nuclei RNA sequencing of human subcutaneous WAT pre/post lifestyle intervention, pharmacological NPY treatment in primary human adipocytes, meta-analysis of 23 clinical studies, cAMP signaling measurement |
Molecular metabolism |
High |
41412283
|
| 2024 |
NPY1R forms heteroreceptor complexes with TrkB in the hippocampal dentate gyrus; co-administration of NPY1R agonist and ketamine enhanced NPY1R-TrkB complex formation (detected by proximity ligation assay), increased BDNF expression, and promoted neuroblast proliferation and memory consolidation. |
In situ proximity ligation assay, immunohistochemistry for PCNA and DCX, intracerebroventricular administration, object-in-place memory task |
Cells |
Medium |
38667284
|
| 2024 |
NPY1R forms heteroreceptor complexes with GALR2 in the dentate gyrus of the dorsal hippocampus; co-activation of NPY1R and GALR2 with agonists increases neuroblast proliferation and enhances memory consolidation in rats. |
In situ proximity ligation assay for NPY1R-GALR2 co-localization, intracerebroventricular injections of agonists, PCNA and DCX neurogenesis markers, object-in-place memory task |
Frontiers in cellular neuroscience |
Medium |
38425430
|
| 2025 |
UHRF1 binds to the NPY1R promoter and promotes its methylation, leading to NPY1R transcriptional suppression; UHRF1 deficiency causes NPY1R upregulation, which attenuates cAMP/PKA/CREB signaling in intestinal epithelial cells, thereby enhancing NF-κB activation and proinflammatory responses that compromise intestinal epithelial barrier integrity. |
ChIP for UHRF1 binding to NPY1R promoter, Uhrf1 conditional KO mouse model, human IBD cell models, cAMP/PKA/CREB and NF-κB signaling measurements, barrier integrity assays |
JCI insight |
High |
41657307
|
| 2024 |
TK (tyrosine kinase)-mediated phosphorylation of NPY1R protein modulates its activity; TKI treatment decreases IA formation and suppresses the contractile-to-synthetic phenotype transition of VSMCs, inflammatory response and M1 macrophage polarization in intracranial aneurysm mice; NPY1R overexpression promotes M1 macrophage polarization and VSMC phenotypic switching; macrophage ablation abolished NPY1R overexpression-mediated IA progression. |
Co-immunoprecipitation (Co-IP) for TK-NPY1R interaction, western blot, RT-qPCR, flow cytometry, ELISA, macrophage ablation in mouse IA model |
Neuropeptides |
Medium |
39353356
|
| 2026 |
In the spinal dorsal horn, MOR signaling in NPY1R+ neurons is required for morphine analgesia under inflammatory pain conditions; NPY synergistically enhances morphine analgesia through NPY1R, as shown by abolition of the effect with NPY1R antagonism or Npy1r knockout; NPY1R+ interneuron hyperexcitability from inflammation is suppressed by morphine via increased rheobase, hyperpolarized resting membrane potential, and reduced action potential firing. |
Chemogenetics (DREADDs), conditional Oprm1 knockout in NPY1R+ neurons (AAV-Npy1r-Cre-EGFP), intrathecal NPY + antagonist, Npy1r-/- mice, in situ hybridization, whole-cell patch clamp recordings from spinal cord slices |
Brain : a journal of neurology |
High |
41738433
|
| 2025 |
NPY1R is expressed on a subset of colorectal stem cells predominantly in the middle and distal colorectum (LGR5+ cells); selective dysregulation of Wnt signaling in NPY1R+ stem cells using CreERT2 drives colon cancer initiation predominantly in the rectum, establishing NPY1R+ cells as a source of colon cancer. |
NPY1R-CreERT2 mouse lines, conditional Wnt signaling activation in NPY1R+ cells, combination with oncogenic Kras and Trp53 loss, histopathology |
Nature cell biology |
High |
40897804
|
| 2025 |
Transient intracerebroventricular siRNA knockdown of NPY1R disrupts NPY1R-GALR2 and NPY1R-TrkB heteroreceptor complexes in the ventral hippocampus without affecting hippocampal neurogenesis or depressive-like behavior, indicating compensatory mechanisms that preserve hippocampal plasticity when NPY1R is transiently reduced. |
ICV siRNA knockdown, in situ proximity ligation assay, PCNA immunolabeling, BDNF immunohistochemistry, forced swim test |
Journal of psychopharmacology |
Medium |
41307298
|
| 2025 |
In the ventral hippocampus CA1 region, NPY1R-expressing neurons and NPY2R-expressing neurons form two physically non-overlapping sub-ensembles; NPY released from GABAergic interneurons acts on NPY1R+ sub-ensembles to gate early fast stages of fear memory extinction, as demonstrated by CRISPR/Cas9-mediated NPY1R knockout. |
Activity-dependent single-cell transcriptomics, genetically encoded calcium and NPY sensors, CRISPR/Cas9 NPY1R knockout, bidirectional chemogenetic manipulation, cued fear memory and extinction behavioral paradigm |
bioRxivpreprint |
Medium |
|
| 2025 |
In colonic L-cells (enteroendocrine cells), PYY acts on neighboring enterochromaffin cells via NPY1R to enhance serotonin release, contributing to increased gut pain sensitivity in females; this pathway is driven by ERα-mediated upregulation of Olfr78 on L-cells, increasing PYY release in response to acetate. |
Estrogen receptor signaling analysis, functional gut epithelial circuit dissection in mouse colon, PYY-NPY1R-EC cell paracrine signaling assays |
bioRxivpreprint |
Medium |
|