Nurr1 (NR4A2) regulates Alzheimer's disease-related pathogenesis and cognitive function in the 5XFAD mouse model.
Moon M, Jung ES, Jeon SG, Cha MY, Jang Y, Kim W, Lopes C, Mook-Jung I, Kim KS
This study shows that activating the Nurr1 protein reduces Alzheimer's-like symptoms in mice, but it does not provide evidence for treating NR4A2-related syndrome in children. The research focuses on a different disease (Alzheimer's) using animal models, with no direct application to human genetic variants of NR4A2. Parents should view this as basic biology research rather than a potential treatment pathway for their child.
- Study uses Alzheimer's mouse models, not humans or NR4A2 syndrome patients.
- Nurr1 activation reduced plaques and improved cognition in mice with Alzheimer's pathology.
- No data exists on how this affects dopaminergic neurons in NR4A2-related conditions.
- Findings are preclinical and do not translate to current clinical options for NR4A2 families.
NR4A nuclear receptors in cardiac remodeling and neurohormonal regulation.
Medzikovic L, de Vries CJM, de Waard V
NR4A nuclear receptors, including Nurr1, play important roles in regulating heart stress responses and neurohormonal systems like the sympathetic nervous system and renin-angiotensin-aldosterone system, which are involved in heart failure progression.
- NR4A receptors help control heart stress and neurohormonal activity
- They influence systems that drive heart failure when overactive
- Nurr1 is a key regulator in cardiac and neurohormonal responses
- These receptors may offer new targets for treating heart disease
Differential expression of a stress-regulated gene Nr4a2 characterizes early- and late-born hippocampal granule cells.
Imura T, Kobayashi Y, Suzutani K, Ichikawa-Tomikawa N, Chiba H
This study identifies Nr4a2 as a stress-regulated gene in mouse hippocampal neurons, showing that acute stress suppresses its expression while chronic stress increases it. It further demonstrates that long-term stress impairs the survival of new neurons and alters their distribution in aged mice.
- Nr4a2 is preferentially expressed by early-born hippocampal granule cells in mice.
- Acute stress suppresses Nr4a2 expression, while chronic stress induces it.
- Chronic restraint stress impairs the survival of newly generated neurons.
- Long-term stress reduces late-born neuron proportions in aged mice.
Defining a Canonical Ligand-Binding Pocket in the Orphan Nuclear Receptor Nurr1.
de Vera IMS, Munoz-Tello P, Zheng J, Dharmarajan V, Marciano DP, Matta-Camacho E, Giri PK, Shang J, Hughes TS, Rance M, Griffin PR, Kojetin DJ
The protein structure of Nurr1 contains a hidden, dynamic pocket that can open to bind unsaturated fatty acids. This finding suggests the protein is 'druggable' and could potentially be targeted by new medications in the future.
- Nurr1 has a hidden binding pocket that opens to accept fatty acids.
- The pocket changes shape rapidly, unlike other nuclear receptors.
- This proves Nurr1 can bind molecules, making it a potential drug target.
- Future research may develop therapies for Nurr1-related diseases like Parkinson's.
Dbx1-Derived Pyramidal Neurons Are Generated Locally in the Developing Murine Neocortex.
Rueda-Alaña E, Martínez-Garay I, Encinas JM, Molnár Z, García-Moreno F
This study maps the developmental origin of specific neurons in the mouse neocortex, finding that Dbx1-derived pyramidal neurons are generated locally rather than migrating from the ventral pallium. The research provides a new framework for understanding cortical neuron migration patterns during embryonic development.
- The study uses an in vivo mouse model to track neuronal migration during embryonic development.
- Dbx1-expressing progenitors are found throughout pallial areas, not just the ventral pallium.
- No evidence supports tangential migration of these neurons from the ventral pallium to the neocortex.
- Dbx1-derived pyramidal neurons originate locally within the dorsal pallial neuroepithelium.
Image-guided phenotyping of ovariectomized mice: altered functional connectivity, cognition, myelination, and dopaminergic functionality.
Anckaerts C, van Gastel J, Leysen V, Hinz R, Azmi A, Simoens P, Shah D, Kara F, Langbeen A, Bols P, Laloux C, Prevot V, Verhoye M, Maudsley S, Van der Linden A
This study uses MRI and proteomics to show that hormonal disruption in mice causes cognitive deficits, altered brain connectivity, and changes in dopaminergic signaling. NR4A2 appears only as a predicted upstream regulator of dopamine function in this context, with no direct analysis of the gene or its variants.
- Ovariectomy in mice disrupts hypothalamus-pituitary-gonadal signaling and causes cognitive deficits.
- MRI reveals selective dysconnectivity in specific brain regions following hormonal disruption.
- Proteomics identifies altered dopaminergic functionality, including predicted NR4A2 involvement.
- The study focuses on general aging and endocrine effects, not NR4A2 genetics.
Illuminated night alters hippocampal gene expressions and induces depressive-like responses in diurnal corvids.
Taufique SKT, Prabhat A, Kumar V
This study examines how artificial light at night affects gene expression and behavior in crows, finding that dim light suppresses genes associated with mood regulation including NR4A2. The research uses a bird model to explore environmental impacts on circadian rhythms and neurogenesis, with no direct application to human genetic syndromes.
- Dim light at night reduces sleep and induces depressive-like behaviors in crows.
- NR4A2 gene expression decreases alongside other mood-related genes under artificial light.
- The study focuses on environmental epigenetics, not human genetic mutations.
- No clinical relevance to NR4A2-related syndromes or potential treatments exists.
Nurr1 exacerbates cerebral ischemia-reperfusion injury via modulating YAP-INF2-mitochondrial fission pathways.
Zhang Z, Yu J
This study shows that Nurr1 worsens brain damage after stroke by triggering excessive mitochondrial fission and neuron death in mice. Removing or blocking Nurr1 protects neurons and reduces injury in this animal model of cerebral ischemia-reperfusion.
- Nurr1 levels rise significantly during cerebral ischemia-reperfusion injury in mice.
- Genetic removal of Nurr1 reduces brain infarction size and neuron apoptosis.
- Nurr1 drives neuron death by activating mitochondrial fission via the YAP-INF2 pathway.
- Blocking this pathway sustains mitochondrial health and improves neuronal survival.
Epinephrine Released During Traumatic Events May Strengthen Contextual Fear Memory Through Increased Hippocampus mRNA Expression of Nr4a Transcription Factors.
Oliveira A, Martinho R, Serrão P, Moreira-Rodrigues M
This study shows that stress hormones strengthen fear memories in mice by increasing the expression of Nr4a genes in the hippocampus. It does not provide information on human NR4A2 syndrome, treatment options, or clinical outcomes for children.
- The research uses only mouse models and cell-level measurements.
- It focuses on fear memory consolidation, not neurodevelopmental disorders.
- No human data or clinical trials are included in this paper.
- Findings do not translate to current management of NR4A2 syndrome.
Progression of myocardial ischemia leads to unique changes in immediate-early gene expression in the spinal cord dorsal horn.
Saddic LA, Howard-Quijano K, Kipke J, Kubo Y, Dale EA, Hoover D, Shivkumar K, Eghbali M, Mahajan A
This study examines how heart damage alters gene expression in the spinal cord of pigs, finding that NR4A2 is one of several genes activated during chronic ischemia. The research focuses on cardiovascular autonomic pathways and does not investigate neurodevelopmental outcomes or treatments relevant to NR4A2-related syndromes.
- Study uses a pig model of heart disease, not human patients or NR4A2-specific models.
- NR4A2 appears as one of many genes upregulated in the spinal cord during chronic heart injury.
- Findings relate to autonomic nervous system responses to cardiac stress, not brain development.
- No clinical data, patient phenotypes, or therapeutic implications for NR4A2 syndromes are presented.
Sevoflurane anesthesia represses neurogenesis of hippocampus neural stem cells via regulating microRNA-183-mediated NR4A2 in newborn rats.
Shao CZ, Xia KP
Sevoflurane anesthesia suppresses the growth and maturation of newborn rat brain stem cells by increasing miR-183, which in turn reduces NR4A2 levels. This mechanism suggests that early exposure to this anesthetic may interfere with normal brain development in neonates.
- Sevoflurane increases miR-183 and decreases NR4A2 in newborn rat hippocampal stem cells.
- High miR-183 levels inhibit the proliferation and differentiation of these neural stem cells.
- NR4A2 is a direct target of miR-183, linking the anesthetic effect to this specific gene.
- The study uses newborn rats, not humans, to model potential developmental risks.
Lethal Factor Domain-Mediated Delivery of Nurr1 Transcription Factor Enhances Tyrosine Hydroxylase Activity and Protects from Neurotoxin-Induced Degeneration of Dopaminergic Cells.
Paliga D, Raudzus F, Leppla SH, Heumann R, Neumann S
A lab study shows that a modified Nurr1 protein protects dopamine-producing cells from damage in cell cultures. This approach has not been tested in humans or animals, so it does not currently offer a treatment option for children with NR4A2-related syndrome.
- Researchers created a fusion protein to deliver Nurr1 into human dopaminergic cells.
- The modified protein increased tyrosine hydroxylase activity in cultured cells.
- The treatment protected cells from neurotoxin-induced degeneration in vitro.
- This is early-stage molecular biology with no clinical or animal data.
Compensatory Expression of Nur77 and Nurr1 Regulates NF-κB-Dependent Inflammatory Signaling in Astrocytes.
Popichak KA, Hammond SL, Moreno JA, Afzali MF, Backos DS, Slayden RD, Safe S, Tjalkens RB
A specific compound called C-DIM5 reduces inflammatory signaling in astrocytes by activating the NR4A family of receptors, including Nurr1. This mechanism suggests that targeting these receptors could potentially protect neurons from inflammation-driven damage.
- C-DIM5 suppresses inflammatory genes in astrocytes via NR4A receptor activation.
- The drug requires both Nur77 and Nurr1 to inhibit NF-kB signaling.
- This is preclinical cell culture research, not human clinical data.
- No approved drugs currently target these specific receptors for therapy.
Medial habenula maturational deficits associate with low motivation for voluntary physical activity.
Grigsby KB, Kelty TJ, Booth FW
This study identifies structural and genetic differences in the medial habenula of rats that correlate with their natural tendency to exercise, highlighting Nurr1 as a marker of neuronal maturity in this context. The findings suggest that the development of specific brain circuits drives motivation for physical activity rather than directly addressing NR4A2-related syndromes.
- Rats bred to run more show higher Nurr1 and neuronal maturity markers in the medial habenula.
- Low-activity rats exhibit immature dendritic structures in the same brain region.
- Nurr1 expression correlates with running distance only in high-activity animals.
- The study links habenula maturation to voluntary physical activity motivation.
- This is a rat model of exercise behavior, not an NR4A2 clinical or therapeutic study.
The involvement of NR4A1 and NR4A2 in the regulation of the luteal function in rats.
Qi L, Guo N, Wei Q, Jin P, Wang W, Mao D
NR4A2 and NR4A1 are involved in regulating luteal function in rats, with NR4A2 primarily found in steroid-producing cells of the corpus luteum and showing expression changes during luteal development and regression. These findings suggest NR4A2 plays a role in maintaining and breaking down the corpus luteum, a process critical for reproductive cycles.
- NR4A2 is present in luteal steroidogenic cells in rats
- NR4A2 expression changes during luteal development and regression
- NR4A2 levels rise quickly in response to luteolytic signals
- NR4A2 may regulate key functions in the corpus luteum
- Findings are relevant to understanding hormonal regulation in reproduction
Abrogation of the Circadian Nuclear Receptor REV-ERBα Exacerbates 6-Hydroxydopamine-Induced Dopaminergic Neurodegeneration.
Kim J, Jang S, Choi M, Chung S, Choe Y, Choe HK, Son GH, Rhee K, Kim K
Removing the circadian protein REV-ERBα worsens dopamine neuron loss and motor deficits in a mouse model of Parkinson's disease. This damage occurs because the absence of REV-ERBα triggers harmful neuroinflammation, suggesting that normal REV-ERBα function helps protect these neurons.
- REV-ERBα competes with NURR1 to regulate dopamine neuron genes.
- Lacking REV-ERBα increases vulnerability of dopamine neurons to toxins in mice.
- The worsening damage is driven by neuroinflammation and microglial activation.
- Normal REV-ERBα activity appears protective for dopamine neuron survival.
Maternal Vitamin D Prevents Abnormal Dopaminergic Development and Function in a Mouse Model of Prenatal Immune Activation.
Luan W, Hammond LA, Vuillermot S, Meyer U, Eyles DW
Maternal vitamin D supplementation prevents abnormal dopamine neuron development and function in a mouse model of prenatal immune stress. Vitamin D increases the number of mature dopamine neurons and restores their normal positioning in fetal brains.
- Vitamin D prevents hypersensitivity to dopamine stimulation in offspring exposed to prenatal immune stress.
- Maternal vitamin D increases mature Nurr1-positive dopamine neuron counts in fetal mice.
- Vitamin D restores normal positioning of mesencephalic dopamine neurons in the developing brain.
- The study uses a mouse model, not human patients or NR4A2-specific genetics.
Generation of dopamine neuronal-like cells from induced neural precursors derived from adult human cells by non-viral expression of lineage factors.
Playne R, Jones K, Connor B
Researchers successfully converted adult human skin cells into dopamine neuronal-like cells using non-viral genetic factors, demonstrating a new method for modeling Parkinson's disease in the lab. The study confirms that these reprogrammed cells express key dopamine markers but fail to fully mature into authentic midbrain neurons despite various experimental adjustments. This work establishes a platform for drug screening rather than offering immediate clinical insights or treatments for NR4A2-related conditions.
- Adult human skin cells convert to dopamine neuronal-like cells via non-viral reprogramming.
- Cells express dopamine markers but lack critical early midbrain developmental signals.
- Adding patterning factors does not produce authentic A9 dopamine neuron phenotypes.
- Method provides an in vitro model for Parkinson's disease drug screening.
- No clinical data, patient outcomes, or direct NR4A2 treatment implications are presented.
Epigenetic Regulation of Aldosterone Synthase Gene by Sodium and Angiotensin II.
Takeda Y, Demura M, Wang F, Karashima S, Yoneda T, Kometani M, Hashimoto A, Aono D, Horike SI, Meguro-Horike M, Yamagishi M, Takeda Y
DNA methylation controls the activity of transcription factors, including NR4A2 (NURR1), by physically blocking their ability to bind to DNA. When specific DNA regions are methylated, NR4A2 cannot interact with its target sites, which prevents it from regulating gene expression.
- Methylation of NR4A2 binding sites directly reduces the protein's ability to bind DNA.
- This study focuses on adrenal hormone regulation, not brain development or dopamine.
- NR4A2 appears as one of several transcription factors affected by methylation.
- The research uses rat models and cell lines, with no human clinical data.
Endogenous Purification of NR4A2 (Nurr1) Identified Poly(ADP-Ribose) Polymerase 1 as a Prime Coregulator in Human Adrenocortical H295R Cells.
Noro E, Yokoyama A, Kobayashi M, Shimada H, Suzuki S, Hosokawa M, Takehara T, Parvin R, Shima H, Igarashi K, Sugawara A
This study identifies PARP1 as a key partner for the NR4A2 protein in adrenal cells, showing that blocking PARP1 reduces aldosterone production. This finding is specific to adrenal hormone regulation and does not provide information about NR4A2's role in brain development or potential treatments for NR4A2-related syndromes.
- PARP1 interacts directly with NR4A2 in human adrenal cells.
- Inhibiting PARP1 reduces aldosterone secretion in these cells.
- The research focuses on steroid hormone synthesis, not neurological function.
- No connection to dopaminergic neurons or motor symptoms is established.
Age-dependent decrease of Nurr1 protein expression in the gerbil hippocampus.
Ahn JH, Lee JS, Cho JH, Park JH, Lee TK, Song M, Kim H, Kang SH, Won MH, Lee CH
Nurr1 protein levels decline significantly in the hippocampus as gerbils age, correlating with reduced cognitive function. This natural aging process in a non-human model does not provide direct evidence for treating NR4A2-related syndromes in children.
- Nurr1 protein decreases gradually in the gerbil hippocampus with advancing age.
- Reduction is most severe in aged animals compared to young and adult groups.
- Declining Nurr1 levels associate with normal aging and cognitive decline in gerbils.
- Study uses animal models, offering no direct clinical guidance for human patients.
Proliferation and committed differentiation into dopamine neurons of neural stem cells induced by the active ingredients of radix astragali.
Gao H, Dou L, Shan L, Sun Y, Li W
Active ingredients from the herb radix astragali stimulate neural stem cells to multiply and differentiate into dopamine-producing neurons in a laboratory dish. This process involves increasing the expression of key genes, including Nurr1 (NR4A2), sonic hedgehog, and Ptx3, which drive the formation of these specific brain cells.
- Radix astragali extracts boost neural stem cell proliferation in vitro.
- The compounds induce differentiation into dopamine neurons specifically.
- Treatment upregulates Nurr1 (NR4A2), Shh, and Ptx3 gene expression.
- This is a preclinical study using cell cultures, not humans or animals.
DNA topoisomerase IIβ stimulates neurite outgrowth in neural differentiated human mesenchymal stem cells through regulation of Rho-GTPases (RhoA/Rock2 pathway) and Nurr1 expression.
Zaim M, Isik S
Overexpressing DNA topoisomerase IIβ promotes neurite growth in human stem cells by regulating Rho-GTPases and increasing Nurr1 levels. Silencing this enzyme reduces neural differentiation and alters cell morphology, suggesting a role in maintaining neuronal structure.
- Topo IIβ overexpression increases neurite length in human stem cells.
- Silencing Topo IIβ reduces neural differentiation efficiency and neurite growth.
- Nurr1 expression levels correlate directly with Topo IIβ presence.
- The mechanism involves downregulating RhoA/Rock2 and upregulating Cdc42.
Inhibitory Effects of a Novel PPAR-γ Agonist MEKT1 on Pomc Expression/ACTH Secretion in AtT20 Cells.
Parvin R, Noro E, Saito-Hakoda A, Shimada H, Suzuki S, Shimizu K, Miyachi H, Yokoyama A, Sugawara A
This study investigates a potential drug for Cushing's disease using mouse pituitary tumor cells, not human patients or NR4A2-related conditions. The research focuses on how the drug affects hormone production pathways unrelated to the dopaminergic system relevant to NR4A2 syndromes.
- Study uses mouse pituitary cells, not human tissue or patients.
- Focuses on Cushing's disease treatment, not NR4A2 syndrome.
- No connection to dopaminergic neurons or motor symptoms.
- Preclinical molecular biology with no clinical application for this child.
Neural Stem Cell Grafts Promote Astroglia-Driven Neurorestoration in the Aged Parkinsonian Brain via Wnt/β-Catenin Signaling.
L'Episcopo F, Tirolo C, Peruzzotti-Jametti L, Serapide MF, Testa N, Caniglia S, Balzarotti B, Pluchino S, Marchetti B
Transplanted neural stem cells restore damaged dopamine neurons in aged mice with Parkinson's disease by triggering astrocytes to activate a specific repair signaling pathway. This approach demonstrates that supporting the brain's own glial cells can reverse neuronal loss and immune dysfunction in an aging, diseased environment.
- Neural stem cell grafts convert into astrocytes that trigger neuron repair in aged Parkinsonian mice.
- The Wnt/beta-catenin signaling pathway drives the restoration of dopamine neurons and reduces inflammation.
- Blocking this signaling pathway stops the therapeutic benefits, confirming its essential role in neurorestoration.
Nurr1: A vital participant in the TLR4-NF-κB signal pathway stimulated by α-synuclein in BV-2 cells.
Shao QH, Yan WF, Zhang Z, Ma KL, Peng SY, Cao YL, Yuan YH, Chen NH
This study shows that Nurr1 reduces inflammation in immune cells by blocking a specific signaling pathway triggered by abnormal protein aggregates. The findings are based entirely on cell cultures and mouse models, with no human data or direct clinical application established.
- Nurr1 inhibits inflammatory responses in microglia by interacting with NF-κB.
- The research uses only BV-2 cells and mouse models, not human subjects.
- No evidence exists yet for treating NR4A2-related syndromes or Parkinson's in people.
- This is basic molecular biology explaining a mechanism, not a therapy test.
Inhibition of Nr4a Receptors Enhances Antitumor Immunity by Breaking Treg-Mediated Immune Tolerance.
Hibino S, Chikuma S, Kondo T, Ito M, Nakatsukasa H, Omata-Mise S, Yoshimura A
Blocking NR4A proteins in regulatory T cells removes their ability to suppress immune responses, allowing the body's own immune system to attack tumors more effectively. This approach boosts anti-tumor immunity without causing major autoimmune side effects in mice.
- NR4A proteins help regulatory T cells suppress immune attacks on tumors
- Turning off NR4A in T cells helps immune cells fight cancer
- Existing drugs can block NR4A activity and enhance anti-tumor responses
- This strategy works without causing severe autoimmunity in models
- Could lead to new cancer treatments targeting immune suppression
miR-381-3p knockdown improves intestinal epithelial proliferation and barrier function after intestinal ischemia/reperfusion injury by targeting nurr1.
Liu L, Yao J, Li Z, Zu G, Feng D, Li Y, Qasim W, Zhang S, Li T, Zeng H, Tian X
Inhibiting a specific microRNA restores intestinal barrier function and improves survival in mice suffering from ischemia/reperfusion injury by increasing the activity of Nurr1. This study demonstrates that Nurr1 is essential for protecting gut tissue during acute physical stress, but it does not address neurodevelopmental outcomes or motor symptoms relevant to NR4A2 syndrome.
- Nurr1 supports intestinal epithelial proliferation and barrier integrity after injury.
- Blocking miR-381-3p boosts Nurr1 levels and reduces tissue damage in mice.
- The protective effect relies entirely on Nurr1-mediated pathways.
- This research focuses on acute gut injury, not neurological development.
- No clinical data or human trials are included in this study.
Generation of Dopamine-Secreting Cells from Human Adipose Tissue-Derived Stem Cells In Vitro.
Soheilifar MH, Javeri A, Amini H, Taha MF
Researchers successfully converted human fat-derived stem cells into dopamine-secreting neurons in a lab dish using specific growth factors. These engineered cells express key dopaminergic markers and release dopamine when stimulated, demonstrating the potential for cell replacement therapies.
- Human adipose stem cells differentiate into dopamine-secreting neurons in vitro.
- A specific growth factor cocktail drives this dopaminergic specification.
- Differentiated cells express TH, NURR1, and other dopaminergic markers.
- Cells release significant dopamine upon electrical stimulation.
- This approach offers a potential source for Parkinson's disease cell therapy.
Correlation between Nurr1 expression and drug resistance in the brain of rats with epilepsy.
Li HY, Liu F, Wang HR
This study finds that Nurr1 levels rise in the brains of rats with drug-resistant epilepsy and correlate with markers of drug resistance. The findings are based entirely on animal models and do not provide evidence for human treatment or NR4A2-related syndromes.
- Nurr1 protein increases in rat hippocampus during drug-resistant epilepsy.
- Higher Nurr1 correlates with increased drug-resistance markers in rats.
- The study uses only rat models, not human patients.
- No clinical relevance for NR4A2 syndrome or human therapy is established.
Effects of rhynchophylline on the hippocampal miRNA expression profile in ketamine-addicted rats.
Li C, Tu G, Luo C, Guo Y, Fang M, Zhu C, Li H, Ou J, Zhou Y, Liu W, Yung KKL, Mo Z
This study examines how a compound called rhynchophylline affects gene regulation in the brains of rats addicted to ketamine. It identifies a specific molecular pathway involving miR-331-5p and Nurr1 that changes during addiction and is modified by the treatment.
- The study uses rat models of ketamine addiction, not human patients.
- Rhynchophylline alters miRNA expression in the hippocampus of addicted rats.
- miR-331-5p negatively regulates Nurr1 protein levels in this context.
- Nurr1 is a transcription factor, but this paper focuses on addiction mechanisms.
- No clinical data or direct relevance to NR4A2-related developmental syndromes is presented.
Rhynchophylline Downregulates Phosphorylated cAMP Response Element Binding Protein, Nuclear Receptor-related-1, and Brain-derived Neurotrophic Factor Expression in the Hippocampus of Ketamine-induced Conditioned Place Preference Rats.
Guo Y, Luo C, Tu G, Li C, Liu Y, Liu W, Lam Yung KK, Mo Z
Rhynchophylline, a plant-derived alkaloid, reverses ketamine-induced behavioral changes in rats by normalizing hippocampal levels of Nurr1, p-CREB, and BDNF. This preclinical study suggests that modulating these specific proteins may mitigate drug reward pathways.
- Rhynchophylline reduces ketamine-seeking behavior in a rat model of addiction.
- The treatment restores hippocampal Nurr1 levels altered by ketamine exposure.
- Nurr1, p-CREB, and BDNF are key molecular targets in this mechanism.
- Findings are limited to animal models with no human clinical data.
NR4A2 protects cardiomyocytes against myocardial infarction injury by promoting autophagy.
Liu H, Liu P, Shi X, Yin D, Zhao J
NR4A2 helps protect heart cells after a heart attack by boosting autophagy, a process that clears out damaged components. Lower NR4A2 levels increase cell death, while increasing NR4A2 reduces damage, suggesting it could be a target for treating heart failure.
- NR4A2 protects heart cells after a heart attack
- NR4A2 boosts autophagy to reduce cell death
- Low NR4A2 leads to more heart damage
- NR4A2 blocks p53/Bax, a key cell death pathway
- miR-212-3p reduces NR4A2 levels
Three-step transcriptional priming that drives the commitment of multipotent progenitors toward B cells.
Miyai T, Takano J, Endo TA, Kawakami E, Agata Y, Motomura Y, Kubo M, Kashima Y, Suzuki Y, Kawamoto H, Ikawa T
This study identifies Nr4a2 as a critical early factor required for the development of B cells in the immune system. It demonstrates that Nr4a2 acts in a three-step process to prime multipotent progenitor cells before they commit to becoming B lymphocytes.
- Nr4a2 is an immediate early gene essential for B-cell lineage commitment.
- Inhibiting Nr4a2 severely impairs the generation of B cells in vitro.
- The research maps a three-step transcriptional circuit driving immune cell development.
- Findings provide a blueprint for understanding normal and cancerous B-lymphocyte growth.
Conserved Upstream Regulatory Regions in Mammalian Tyrosine Hydroxylase.
Wang M, Fones L, Cave JW
This study identifies five conserved DNA regions upstream of the Tyrosine Hydroxylase gene that help control its expression in catecholamine-producing neurons. It confirms that NURR1 (NR4A2) and other transcription factors bind to these regions, while also discovering a new regulatory role for the CTCF protein in the forebrain.
- Five conserved DNA regions upstream of the Tyrosine Hydroxylase gene regulate its expression.
- NURR1 binds to these conserved regions to help control neuron-specific gene activity.
- CTCF is identified as a novel regulator of Tyrosine Hydroxylase transcription in the forebrain.
- The research maps the genomic architecture controlling key enzymes in dopamine production.
Bioactive Dietary VDR Ligands Regulate Genes Encoding Biomarkers of Skin Repair That Are Associated with Risk for Psoriasis.
Karrys A, Rady I, Chamcheu RN, Sabir MS, Mallick S, Chamcheu JC, Jurutka PW, Haussler MR, Whitfield GK
This study investigates how dietary compounds DHA and curcumin influence skin repair genes in human keratinocytes, noting that they modulate the transcription factor NR4A2/NURR1. The research focuses on psoriasis mechanisms and does not provide evidence regarding NR4A2-related syndromes or their treatment.
- DHA and curcumin activate skin repair genes in human keratinocytes with specific genetic deletions.
- These compounds reduce inflammation markers by opposing TNF-alpha signaling pathways.
- NR4A2/NURR1 is identified as a transcription factor modulated by these dietary ligands.
- The findings relate to psoriasis treatment mechanisms, not NR4A2 syndrome pathology.
Identification of key microRNAs, transcription factors and genes associated with congenital obstructive nephropathy in a mouse model of megabladder.
Xin G, Chen R, Zhang X
This study identifies specific microRNAs and transcription factors, including NR4A2, that regulate gene networks in a mouse model of congenital kidney obstruction. The findings highlight molecular pathways involving Vegfa, Pten, and Kras that may contribute to the development of this condition.
- Researchers analyzed kidney tissue from mice with megabladder to find molecular causes of obstruction.
- Three key microRNAs were identified as regulators in the affected kidney tissue.
- NR4A2 is part of a regulatory network targeting Vegfa in this mouse model.
- The study focuses on congenital obstructive nephropathy, not NR4A2-related neurological syndromes.
- Results are based on preclinical animal data with no human clinical application.
Regulatory effects of Nr4a2 on Th2 cells from patients with pemphigus vulgaris.
Chen J, Zhang Y, Liang Y, Zhao M, Long H, Xiao R, Wu H, Liao J, Luo S, Zhang G, Lu Q
In people with pemphigus vulgaris, a rare autoimmune skin disease, levels of the NR4A2 protein in immune cells are lower than normal, and this drop is linked to increased activity of Th2 cells and harmful immune signals. Boosting NR4A2 reduces these harmful immune responses, suggesting it helps control the disease.
- NR4A2 levels are low in immune cells of pemphigus patients
- Low NR4A2 links to overactive Th2 immune cells
- Increasing NR4A2 reduces harmful immune signals
- NR4A2 may help control autoimmune skin disease
microRNA-137 promotes endothelial progenitor cell proliferation and angiogenesis in cerebral ischemic stroke mice by targeting NR4A2 through the Notch pathway.
Liu XL, Wang G, Song W, Yang WX, Hua J, Lyu L
This study shows that miR-137 promotes blood vessel growth in mouse brains after stroke by suppressing the NR4A2 gene. It establishes a molecular link between NR4A2, the Notch pathway, and endothelial cell survival in an ischemic model.
- NR4A2 levels are elevated in mouse brain tissue following cerebral ischemic stroke.
- miR-137 suppresses NR4A2 to enhance endothelial progenitor cell proliferation.
- The mechanism involves modulation of the Notch signaling pathway components.
- Restoring miR-137 or silencing NR4A2 reduces apoptosis in damaged cells.
Pink1 Regulates Tyrosine Hydroxylase Expression and Dopamine Synthesis.
Lu L, Jia H, Gao G, Duan C, Ren J, Li Y, Yang H
This study identifies a molecular pathway where the PINK1 protein regulates dopamine production by controlling the activity of Nurr1, the transcription factor encoded by NR4A2. While it confirms that Nurr1 is essential for synthesizing tyrosine hydroxylase, the findings are derived from cell cultures and do not provide direct evidence for treating NR4A2-related syndromes in humans.
- PINK1 deficiency reduces dopamine by suppressing tyrosine hydroxylase expression.
- Nurr1 (NR4A2) activity is required for normal tyrosine hydroxylase levels.
- Research relies on dopaminergic cell lines, not human patients or animal models.
- No clinical data or treatment implications for NR4A2 syndrome are presented.