Every NR4A2 paper, in plain English

Nurr1 promotes intestinal regeneration after ischemia/reperfusion injury by inhibiting the expression of p21 (Waf1/Cip1).

Zu G, Yao J, Ji A, Ning S, Luo F, Li Z, Feng D, Rui Y, Li Y, Wang G, Tian X

This study shows that Nurr1 helps intestinal cells regenerate after injury by directly suppressing a protein called p21 that normally stops cell division. The research is conducted entirely in animal models and cell cultures, with no connection to the neurological or developmental aspects of NR4A2 syndrome.

• Nurr1 promotes intestinal cell proliferation after ischemia/reperfusion injury.
• Nurr1 directly inhibits p21 gene transcription to allow cell cycle progression.
• This mechanism is independent of the tumor suppressor p53.
• The study focuses on gut barrier repair, not brain development or dopamine.
• No human data or clinical relevance to NR4A2-related neurodevelopmental disorders.

Paternal chronic colitis causes epigenetic inheritance of susceptibility to colitis.

Tschurtschenthaler M, Kachroo P, Heinsen FA, Adolph TE, Rühlemann MC, Klughammer J, Offner FA, Ammerpohl O, Krueger F, Smallwood S, Szymczak S, Kaser A, Franke A

This study shows that chronic colitis in male mice causes epigenetic changes that increase the offspring's susceptibility to intestinal inflammation and alter metabolism. These findings are based on animal models and do not provide direct evidence for human NR4A2-related syndromes or clinical treatments.

• Paternal colitis in mice triggers epigenetic inheritance of metabolic and inflammatory traits.
• Offspring show altered methylation and expression of Nr4a2 and Igf1r genes.
• F1 mice exhibit decreased baseline body weight and higher colitis susceptibility.
• The study uses murine models, not human patients or clinical data.

Re-Cloning the N27 Dopamine Cell Line to Improve a Cell Culture Model of Parkinson's Disease.

Gao L, Zhou W, Symmes B, Freed CR

Researchers created a purified rat cell line that reliably expresses dopamine neuron markers to serve as a better model for Parkinson's disease research. This improved model allows scientists to study dopaminergic neuron function and toxicity more accurately than previous mixed-cell cultures.

• The new N27-A clone consists of nearly 100% pure dopaminergic neurons.
• It expresses key dopamine markers like TH, DAT, and transcription factors.
• Cells release dopamine and show expected sensitivity to specific neurotoxins.
• This model aids basic Parkinson's research but involves no human data.

Effects of Simazine Exposure on Neuronal Development-Related Factors in MN9D Cells.

Yu J, Li X, Yang J, Wu Y, Li B

Exposure to the herbicide simazine alters the expression of genes critical for dopamine neuron development in cultured cells. The study identifies specific molecular pathways affected by this chemical, suggesting potential environmental risks to dopaminergic systems.

• Simazine increases tyrosine hydroxylase mRNA and protein levels in dopaminergic cells.
• Nurr1 mRNA levels decrease at low doses but increase at high doses of simazine.
• The herbicide affects multiple transcription factors involved in neuronal development.
• Findings are based solely on cell culture experiments, not human or animal models.

Nurr1 and PPARγ protect PC12 cells against MPP(+) toxicity: involvement of selective genes, anti-inflammatory, ROS generation, and antimitochondrial impairment.

Jodeiri Farshbaf M, Forouzanfar M, Ghaedi K, Kiani-Esfahani A, Peymani M, Shoaraye Nejati A, Izadi T, Karbalaie K, Noorbakhshnia M, Rahgozar S, Baharvand H, Nasr-Esfahani MH

Agonists for Nurr1 and PPARγ protect PC12 cells from MPP(+)-induced toxicity by reducing oxidative stress and preserving mitochondrial function. This in vitro study demonstrates that these compounds can enhance cell viability and decrease the expression of inflammatory markers in a Parkinson's disease model.

• Nurr1 and PPARγ agonists reduce cell death in PC12 cells exposed to MPP(+).
• Treatment decreases intracellular reactive oxygen species production.
• Mitochondrial membrane potential is preserved by the agonist treatments.
• The study uses an in vitro cell culture model, not human or animal subjects.

Molecular characterization and analysis of the porcine NURR1 gene.

Larsen K, Momeni J, Farajzadeh L, Callesen H, Bendixen C

This study characterizes the NURR1 gene in pigs, finding that its protein structure is nearly identical to humans and that its expression during development is regulated by DNA methylation. The research provides basic biological data on how the gene functions in a large animal model but does not involve human patients or clinical outcomes.

• Porcine NURR1 protein shares 99% similarity with human, bovine, and mouse versions.
• NURR1 mRNA appears early in embryo brain development, specifically in the cerebellum and basal ganglia.
• DNA methylation levels in the gene promoter correlate with changes in NURR1 transcript expression.
• The study maps the porcine NURR1 gene to chromosome 15.

Directed differentiation of postnatal hippocampal neural stem cells generates nuclear receptor related‑1 protein‑ and tyrosine hydroxylase‑expressing cells.

Ding Y, Zhang Z, Ma J, Xia H, Wang Y, Liu Y, Ma Q, Sun T, Liu J

This study shows that neural stem cells from postnatal mouse brains can be directed to become dopamine-producing neurons in a lab dish. The researchers found that reducing serum levels in the culture medium significantly increases the production of these specific nerve cells.

• Mouse hippocampal stem cells differentiate into astrocytes in standard serum conditions.
• Low serum conditions markedly increase the number of neurons expressing dopamine markers.
• Nurr1 and tyrosine hydroxylase positive cells increase with longer differentiation time.
• Results suggest these cells could serve as a source for Parkinson's disease cell therapy.

Pharmacogenetic analysis of cinacalcet response in secondary hyperparathyroidism patients.

Jeong S, Kim IW, Oh KH, Han N, Joo KW, Kim HJ, Oh JM

Certain genetic variations in the CASR gene are linked to how well patients respond to the drug cinacalcet for secondary hyperparathyroidism. These genetic differences may help predict whether a patient will benefit from the medication.

• CASR gene variants affect response to cinacalcet
• Specific SNPs and gene combinations predict treatment success
• Genetic testing could guide dosing or drug choice
• Findings may help personalize treatment for kidney disease patients

Differentiation and Characterization of Dopaminergic Neurons From Baboon Induced Pluripotent Stem Cells.

Grow DA, Simmons DV, Gomez JA, Wanat MJ, McCarrey JR, Paladini CA, Navara CS

Researchers successfully created functional dopamine-producing neurons from baboon stem cells that mimic human midbrain cells. This study establishes a large animal model to test the safety and efficacy of future stem cell therapies for Parkinson's disease.

• Baboon stem cells differentiate into dopamine neurons expressing key markers like NURR1 and TH.
• These neurons fire electrical signals and release catecholamines, proving functional maturity.
• The baboon model offers neuroanatomical similarities to humans for preclinical therapy testing.
• This work supports future safety trials of stem cell transplants in Parkinson's disease.

The role of signal transducer and activator of transcription 3 in Rift Valley fever virus infection.

Pinkham C, An S, Lundberg L, Bansal N, Benedict A, Narayanan A, Kehn-Hall K

This study shows that STAT3 helps protect cells during Rift Valley fever virus infection by controlling the location of a viral protein, which in turn affects cell survival. The findings suggest that STAT3's role in regulating gene expression, including the NR4A2 gene, may influence how cells respond to viral damage.

• STAT3 protects cells from virus-induced death
• STAT3 controls where a viral protein moves in the cell
• NR4A2 gene expression is reduced during infection
• STAT3 helps regulate viral protein localization
• This pathway may affect cell survival during infection

Active coping of prenatally stressed rats in the forced swimming test: involvement of the Nurr1 gene.

Montes P, Ruiz-Sánchez E, Calvillo M, Rojas P

Reducing Nurr1 levels in the hippocampus of non-stressed adult rats induces depressive-like behavior, while prenatal stress appears to protect against this effect by maintaining Nurr1 expression. This suggests that Nurr1 plays a critical role in how early life stress influences resilience or vulnerability to stress-related behaviors in adulthood.

• Lowering Nurr1 in adult rats causes depressive-like immobility in stress tests.
• Prenatal stress prevents this effect by maintaining normal Nurr1 levels.
• Nurr1 helps regulate brain responses to acute stress in adulthood.
• This is a rat study with no direct human clinical data.

Nuclear receptor expression atlas in BMDCs: Nr4a2 restricts immunogenicity of BMDCs and impedes EAE.

Saini A, Mahajan S, Gupta P

This study shows that the Nr4a2 protein helps regulate immune cells in mice, specifically reducing inflammation and protecting against an autoimmune disease model. The findings focus entirely on immune system modulation rather than brain development or dopamine neuron function relevant to NR4A2 syndrome.

• Nr4a2 suppresses activation of dendritic cells triggered by inflammatory signals.
• The protein promotes a tolerogenic phenotype in immune cells.
• Nr4a2 increases regulatory T cells and limits effector T cells in mice.
• Protection was observed in an experimental autoimmune encephalomyelitis model.
• Results suggest Nr4a2 as a potential target for immune-related pathologies.

Effect of spontaneous term labour on the expression of the NR4A receptors nuclear receptor related 1 protein (Nurr1), neuron-derived clone 77 (Nur77) and neuron-derived orphan receptor 1 (NOR1) in human fetal membranes and myometrium.

Lappas M

This study shows that NR4A receptors increase in human uterine tissue during labor and when exposed to bacterial products, suggesting they help drive the inflammatory processes of birth. This finding does not provide information about NR4A2-related syndrome or potential treatments for it.

• NR4A receptor levels rise in fetal membranes and myometrium during spontaneous term labor.
• Bacterial products trigger increased expression of these receptors in uterine tissues.
• The study focuses on normal labor mechanisms, not NR4A2-related syndrome.
• No clinical data or treatment implications for NR4A2 children are presented.

Induction of specific neuron types by overexpression of single transcription factors.

Teratani-Ota Y, Yamamizu K, Piao Y, Sharova L, Amano M, Yu H, Schlessinger D, Ko MS, Sharov AA

This study demonstrates that overexpressing the NR4A2 transcription factor in embryonic stem cells directs them to become dopaminergic neurons. It confirms NR4A2's role as a specific genetic switch for this neuron type but relies entirely on cell culture models.

• NR4A2 induces dopaminergic markers when overexpressed in embryonic stem cells.
• The research uses in vitro cell cultures, not animal or human subjects.
• No clinical data or treatment outcomes for patients are reported.
• The study focuses on basic molecular mechanisms of neuron differentiation.

Using iPSC-derived human DA neurons from opioid-dependent subjects to study dopamine dynamics.

Sheng Y, Filichia E, Shick E, Preston KL, Phillips KA, Cooperman L, Lin Z, Tesar P, Hoffer B, Luo Y

This study uses human stem-cell-derived dopamine neurons to show that genetic variations in the dopamine transporter and exposure to valproic acid alter gene expression related to addiction. It does not investigate NR4A2 mutations or provide evidence relevant to NR4A2-related syndrome.

• Study focuses on opioid addiction, not NR4A2-related syndrome.
• Uses iPSC-derived dopamine neurons from human subjects.
• Examines dopamine transporter genetics and valproic acid effects.
• No findings apply to NR4A2 variants or treatment.

Developmental gene expression in the mouse clarifies the organization of the claustrum and related endopiriform nuclei.

Watson C, Puelles L

This study maps the developmental origins of the mouse claustrum and endopiriform nuclei, showing that specific subpopulations express the Nr4a2 gene during embryonic formation. It details how these Nr4a2-positive cells migrate to form distinct brain structures but does not investigate human disease or clinical outcomes.

• Mouse claustrum primordium cells express Nr4a2 during early development.
• Dorsal endopiriform nucleus derives from Nr4a2-positive lateral pallial cells.
• Ventral endopiriform nucleus forms from Nr4a2-negative ventral pallial cells.
• Insular cortex cells migrate through the claustrum but are Nr4a2-negative.
• The study focuses on anatomical organization, not human pathology or treatment.

Efficient generation of dopaminergic-like neurons by overexpression of Nurr1 and Pitx3 in mouse induced Pluripotent Stem Cells.

Salemi S, Baktash P, Rajaei B, Noori M, Amini H, Shamsara M, Massumi M

Researchers successfully convert mouse stem cells into dopamine-producing neurons by adding two specific genes, Nurr1 and Pitx3. This technique creates functional nerve cells in a lab dish that release dopamine when stimulated.

• Mouse stem cells become dopamine neurons using Nurr1 and Pitx3 genes.
• Generated cells produce and secrete dopamine in response to stimuli.
• This method offers a potential source of cells for future Parkinson's therapies.

In situ hybridization analyses of claustrum-enriched genes in marmosets.

Watakabe A

This study maps where specific genes, including NR4A2 (Nurr1), are active in the brains of marmosets to understand brain structure. It confirms that Nurr1 is highly concentrated in the claustrum and certain cortical neurons, matching patterns seen in other primates. The research provides comparative anatomical data but does not address disease mechanisms or treatments for NR4A2-related syndromes.

• NR4A2 (Nurr1) shows high expression in the marmoset claustrum and specific cortical neurons.
• Gene expression patterns in marmosets closely match those previously described in macaques.
• The study compares gene locations across species to highlight conserved brain architecture features.
• No clinical data, patient outcomes, or therapeutic insights for NR4A2 syndromes are presented.

Identification of a Binding Site for Unsaturated Fatty Acids in the Orphan Nuclear Receptor Nurr1.

de Vera IM, Giri PK, Munoz-Tello P, Brust R, Fuhrmann J, Matta-Camacho E, Shang J, Campbell S, Wilson HD, Granados J, Gardner WJ, Creamer TP, Solt LA, Kojetin DJ

Unsaturated fatty acids, including DHA, bind directly to the Nurr1 protein and alter its activity in cellular environments. This study identifies the specific location where these fats attach to the receptor but does not test any treatments or outcomes in humans.

• DHA binds to the ligand-binding pocket of the Nurr1 protein.
• Fatty acid binding changes how Nurr1 interacts with other proteins.
• This is a structural biology study using biochemical assays and NMR.
• No human patients, clinical trials, or therapeutic interventions are involved.

Erratum for the Research Article: "α-Synuclein-induced down-regulation of Nurr1 disrupts GDNF signaling in nigral dopamine neurons" by M. Decressac, B. Kadkhodaei, B. Mattsson, A. Laguna, T. Perlmann, A. Björklund.

This paper is an erratum correcting a previous study on how alpha-synuclein affects dopamine neurons in Parkinson's disease models. It does not present new findings or data relevant to NR4A2-related syndromes.

• This is a correction notice, not original research.
• It addresses errors in a prior study on Parkinson's disease mechanisms.
• The content focuses on alpha-synuclein and GDNF signaling in mice.
• No new information about NR4A2 or human genetics is provided.

Mutated KCNJ5 activates the acute and chronic regulatory steps in aldosterone production.

Hattangady NG, Karashima S, Yuan L, Ponce-Balbuena D, Jalife J, Gomez-Sanchez CE, Auchus RJ, Rainey WE, Else T

Mutant KCNJ5 increases aldosterone production by activating both immediate and long-term pathways in adrenal cells, and the drug verapamil blocks these effects. This provides a potential treatment strategy for certain forms of adrenal overactivity.

• Mutant KCNJ5 boosts aldosterone production through multiple pathways
• Verapamil stops the abnormal hormone production
• The mutation affects both short-term and long-term hormone regulation
• Findings may help treat specific adrenal disorders

Enhancing Beta-Catenin Activity via GSK3beta Inhibition Protects PC12 Cells against Rotenone Toxicity through Nurr1 Induction.

Zhang L, Cen L, Qu S, Wei L, Mo M, Feng J, Sun C, Xiao Y, Luo Q, Li S, Yang X, Xu P

Activating the Wnt/beta-catenin signaling pathway protects dopaminergic cells from toxin-induced damage by increasing Nurr1 levels. This protective effect relies on beta-catenin directly interacting with Nurr1 to enhance its expression.

• GSK3beta inhibitors protect PC12 cells from rotenone toxicity.
• Protection requires beta-catenin and increased Nurr1 expression.
• Beta-catenin physically interacts with Nurr1 to drive this effect.
• Study uses only cell lines, not animals or humans.

Efficient derivation of dopaminergic neurons from SOX1⁻ floor plate cells under defined culture conditions.

Li M, Zou Y, Lu Q, Tang N, Heng A, Islam I, Tong HJ, Dawe GS, Cao T

Researchers develop a method to create functional dopaminergic neurons from human stem cells without using sonic hedgehog signaling. These engineered neurons successfully improve motor symptoms when transplanted into a rat model of Parkinson's disease.

• The study uses human embryonic stem cells, not NR4A2 patient data or clinical trials.
• It focuses on general dopaminergic neuron derivation for Parkinson's disease research.
• Results are limited to preclinical animal models and in vitro cell culture.
• No direct link to NR4A2 syndrome mechanisms or treatments is established.

Methyl-Arginine Profile of Brain from Aged PINK1-KO+A53T-SNCA Mice Suggests Altered Mitochondrial Biogenesis.

Auburger G, Gispert S, Brehm N

This study analyzes brain tissue from mice with Parkinson's disease-related genetic mutations to identify changes in protein modifications linked to mitochondrial function. It finds that specific proteins interacting with NURR1 are dysregulated, suggesting a link between mitochondrial stress and dopaminergic neuron vulnerability.

• Researchers studied aged mice with combined PINK1 and SNCA mutations.
• Proteomic analysis focused on methyl-arginine modifications in brain tissue.
• Proteins interacting with NURR1 showed significant dysregulation.
• Mitochondrial biogenesis pathways appear stressed in these models.
• Findings highlight midbrain vulnerability through mitochondrial homeostasis disruption.

Regulation of differentiation flux by Notch signalling influences the number of dopaminergic neurons in the adult brain.

Trujillo-Paredes N, Valencia C, Guerrero-Flores G, Arzate DM, Baizabal JM, Guerra-Crespo M, Fuentes-Hernández A, Zea-Armenta I, Covarrubias L

Reduced Notch signaling causes dopaminergic neurons to differentiate too early, which ultimately decreases the total number of these neurons in the adult brain. This mechanism explains how genetic variations affecting cell development can lead to a lower density of dopamine-producing cells.

• Notch signaling controls when neural precursors expand versus when they become neurons.
• Premature differentiation reduces the pool of precursor cells available for future neuron production.
• Adult mice with reduced Notch activity show consistently fewer dopaminergic neurons in key brain regions.
• The study uses a mathematical model to confirm this feedback loop regulates neuron numbers.

A MED13-dependent skeletal muscle gene program controls systemic glucose homeostasis and hepatic metabolism.

Amoasii L, Holland W, Sanchez-Ortiz E, Baskin KK, Pearson M, Burgess SC, Nelson BR, Bassel-Duby R, Olson EN

This study identifies a molecular pathway in skeletal muscle that regulates whole-body glucose and liver fat metabolism through the interaction of MED13, NURR1, and MEF2. It demonstrates that suppressing this specific gene program in mice improves insulin sensitivity and prevents fatty liver disease.

• MED13 suppresses glucose uptake genes in muscle by inhibiting NURR1 and MEF2.
• Blocking MED13 in mouse muscle increases glycogen storage and lowers blood sugar.
• Reduced MED13 activity prevents fatty liver accumulation in mice on high-fat diets.
• The mechanism links skeletal muscle metabolism directly to hepatic lipid control.

DJ-1/PARK7, But Not Its L166P Mutant Linked to Autosomal Recessive Parkinsonism, Modulates the Transcriptional Activity of the Orphan Nuclear Receptor Nurr1 In Vitro and In Vivo.

Lu L, Zhao S, Gao G, Sun X, Zhao H, Yang H

The protein DJ-1 enhances the activity of Nurr1 (NR4A2) through a specific cellular signaling pathway, but a disease-linked mutant form of DJ-1 fails to do so. This interaction occurs in laboratory settings and animal models, suggesting a molecular link between DJ-1 function and NR4A2 regulation.

• DJ-1 boosts Nurr1 activity via the Raf/MEK/ERK signaling pathway.
• The L166P mutant of DJ-1 does not enhance Nurr1 activity.
• Reducing DJ-1 levels decreases Nurr1 transcriptional activity.
• Findings are based on in vitro and in vivo animal models.
• No human clinical data or treatment outcomes are reported.

Differential Neuronal Plasticity of Dental Pulp Stem Cells From Exfoliated Deciduous and Permanent Teeth Towards Dopaminergic Neurons.

Majumdar D, Kanafi M, Bhonde R, Gupta P, Datta I

Adult tooth stem cells differentiate into dopaminergic neurons more effectively than baby tooth stem cells when exposed to midbrain signaling cues. This difference stems from higher levels of Sonic Hedgehog receptors and lower basal dopamine production in the adult cells, allowing for greater functional maturation.

• Adult tooth stem cells yield significantly more functional dopaminergic neurons than baby tooth stem cells.
• Adult cells express higher levels of Sonic Hedgehog receptors, enhancing their differentiation potential.
• Baby tooth stem cells show lower receptor expression and reduced capacity for neuronal plasticity.
• Induced adult cells demonstrate superior dopamine release and calcium signaling capabilities.

Prostaglandins from Cytosolic Phospholipase A2α/Cyclooxygenase-1 Pathway and Mitogen-activated Protein Kinases Regulate Gene Expression in Candida albicans-infected Macrophages.

Yun B, Lee H, Jayaraja S, Suram S, Murphy RC, Leslie CC

This study investigates how macrophages respond to fungal infections, identifying that specific signaling pathways regulate the expression of the Nr4a2 gene within immune cells. The findings focus on molecular mechanisms in mouse macrophages and do not provide information about human NR4A2-related syndromes or potential treatments.

• The study uses mouse macrophages infected with Candida albicans, not human patients.
• Nr4a2 expression increases in immune cells during fungal infection via specific signaling pathways.
• Prostaglandins and MAPK kinases coordinate gene regulation in this immune response model.
• No clinical data, patient phenotypes, or therapeutic interventions for NR4A2 syndromes are presented.

Identification of upstream regulators for synovial expression signature genes in osteoarthritis.

Fei Q, Lin J, Meng H, Wang B, Yang Y, Wang Q, Su N, Li J, Li D

This study identifies NR4A2 as one of the top transcription factors regulating gene expression in the synovial tissue of osteoarthritis patients. The research suggests that NR4A2 could serve as a potential therapeutic target for treating osteoarthritis.

• NR4A2 is identified as a crucial upstream regulator in osteoarthritis synovial tissue.
• The study analyzes gene expression data from six osteoarthritis datasets.
• NR4A2 appears among the top ten transcription factors linked to disease genes.
• Findings propose NR4A2 as a potential new therapeutic target for osteoarthritis.

Chiral Dihydrobenzofuran Acids Show Potent Retinoid X Receptor-Nuclear Receptor Related 1 Protein Dimer Activation.

Sundén H, Schäfer A, Scheepstra M, Leysen S, Malo M, Ma JN, Burstein ES, Ottmann C, Brunsveld L, Olsson R

Researchers developed a synthetic molecule that strongly activates the RXR-Nurr1 receptor complex in cell cultures. This work identifies a potential chemical tool for studying this pathway but does not involve human trials or direct treatment of NR4A2-related syndromes.

• The study focuses on RXR-Nurr1 dimer activation, not isolated NR4A2 function.
• Findings are limited to cell-based assays and X-ray crystallography structures.
• No animal models or human clinical data are presented in this paper.
• This is early-stage medicinal chemistry without immediate therapeutic application.

Directed Differentiation of Dopamine-Secreting Cells from Nurr1/GPX1 Expressing Murine Embryonic Stem Cells Cultured on Matrigel-Coated PCL Scaffolds.

Terraf P, Babaloo H, Kouhsari SM

Researchers successfully generated dopamine-secreting cells from mouse embryonic stem cells using a specialized scaffold and genetic modification. This preclinical study demonstrates a potential method for producing functional dopaminergic neurons for future cell replacement therapies in Parkinson's disease.

• The study uses mouse, not human, embryonic stem cells.
• Genetic modification adds Nurr1 and GPX-1 to the stem cells.
• Cells secrete dopamine when cultured on specific nanofibrous scaffolds.
• This is basic tissue engineering research with no human data.
• It does not address NR4A2 variants or current treatments for children.