Association of genetic variants and expression levels of porcine FABP4 and FABP5 genes.
Ballester M, Puig-Oliveras A, Castelló A, Revilla M, Fernández AI, Folch JM
The FABP4 gene variant FABP4:g.2634_2635insC affects FABP4 expression in pig backfat, likely by altering transcription factor binding sites for NR4A2 and PPARG, suggesting a role in fat deposition. This variant is strongly linked to gene expression, supporting FABP4 as a key gene for fatness traits.
- FABP4 variant affects gene expression in fat tissue
- NR4A2 and PPARG binding sites may be disrupted by the variant
- FABP4 is a strong candidate for fat deposition traits
- No effect found for FABP5 variant on expression
- Other genomic regions also influence FABP4/FABP5 expression
Effect on the dopaminergic metabolism induced by oral exposure to simazine during the prepubertal period in rats.
Li X, Yu J, Wu Y, Li B
Oral exposure to the herbicide simazine reduces dopamine levels in rat brains by disrupting key enzymes and transporters, including Nurr1. This study suggests environmental toxins can interfere with dopaminergic metabolism through mechanisms similar to those affected in NR4A2-related syndromes.
- Simazine lowers dopamine levels in the striatum of prepubertal rats.
- The herbicide decreases Nurr1 protein expression in brain tissue.
- Simazine disrupts dopamine synthesis, transport, and metabolism pathways.
- Reduced AADC and increased MAO/COMT alter dopamine processing.
Effect of Wnt1 and Wnt5a on the development of dopaminergic neurons, and toxicity induced by combined exposure to paraquat and maneb during gestation and lactation.
Ma J, Huang C, Ma K, Wu YP, Li BX, Sun Y
Exposure to the herbicides paraquat and maneb during pregnancy and lactation reduces key proteins required for dopaminergic neuron development in rat offspring. This study demonstrates that these environmental toxins disrupt the Wnt signaling pathway and Nurr1 expression, which are critical for midbrain dopamine system formation.
- Combined paraquat and maneb exposure harms developing dopaminergic neurons in rats.
- The toxins decrease Nurr1, Wnt1, and tyrosine hydroxylase protein levels.
- Wnt5a expression increases while protective Wnt1 signaling decreases.
- Effects occur when mothers are exposed during gestation and lactation.
Alpha-synuclein, epigenetics, mitochondria, metabolism, calcium traffic, & circadian dysfunction in Parkinson's disease. An integrated strategy for management.
Phillipson OT
This review proposes a combination of specific nutrients to potentially slow Parkinson's disease progression by targeting mitochondrial dysfunction, oxidative stress, and calcium imbalance. It highlights that these nutrients may support the expression of NR4A2, a transcription factor important for neuronal survival, alongside other protective mechanisms.
- The paper is a review proposing nutrient combinations for Parkinson's management.
- It suggests nutrients may boost NR4A2 expression to support neuron survival.
- Targets include mitochondrial health, oxidative stress, and calcium signaling pathways.
- No clinical trial data or human patient outcomes are presented.
- Focuses on sporadic Parkinson's disease mechanisms rather than genetic syndromes.
Assessing molecular initiating events (MIEs), key events (KEs) and modulating factors (MFs) for styrene responses in mouse lungs using whole genome gene expression profiling following 1-day and multi-week exposures.
Andersen ME, Cruzan G, Black MB, Pendse SN, Dodd D, Bus JS, Sarang SS, Banton MI, Waites R, McMullen PD
This study found that styrene causes gene changes in mouse lungs only in strains with the mouse enzyme CYP2F2, which activates NR4A signaling pathways linked to cell growth. Over time, the gene responses fade, and key regulators of circadian rhythm and metabolism are altered, suggesting long-term changes in cellular control. No signs of DNA damage or cell death were seen.
- Styrene affects mouse lungs only via CYP2F2 enzyme activity
- NR4A signaling is activated by styrene metabolites
- Circadian and metabolic genes shift over time
- No DNA damage or cell death signals detected
- Gene changes disappear after long-term exposure
Permethrin pesticide induces NURR1 up-regulation in dopaminergic cell line: Is the pro-oxidant effect involved in toxicant-neuronal damage?
Bordoni L, Fedeli D, Nasuti C, Capitani M, Fiorini D, Gabbianelli R
Exposure to the pesticide permethrin increases NURR1 levels in dopaminergic cells, and this effect is driven by oxidative stress. Antioxidants can reduce this NURR1 up-regulation, suggesting a link between environmental toxins and cellular stress responses in these neurons.
- Permethrin pesticide raises NURR1 gene and protein levels in dopaminergic cells.
- This increase is linked to oxidative stress caused by the chemical exposure.
- Antioxidants significantly reduce the permethrin-induced rise in NURR1 expression.
- The study uses cell lines, not human or animal models.
Differentiation of mesenchymal stem cells -derived trabecular meshwork into dopaminergic neuron-like cells on nanofibrous scaffolds.
Jamali S, Mostafavi H, Barati G, Eskandari M, Nadri S
This study demonstrates that human mesenchymal stem cells from the eye can be converted into dopaminergic neuron-like cells in a laboratory setting. The researchers show that these cells express key markers like Nurr1 and Tyrosine Hydroxylase when grown on specific nanofibrous scaffolds.
- Human eye stem cells differentiate into dopaminergic-like cells in vitro.
- Cells express Nurr1 and Tyrosine Hydroxylase proteins after treatment.
- Nanofibrous scaffolds support the growth and differentiation of these cells.
- This is a preclinical cell culture study with no human participants.
The ROS/NF-κB/NR4A2 pathway is involved in H2O2 induced apoptosis of resident cardiac stem cells via autophagy.
Shi X, Li W, Liu H, Yin D, Zhao J
This study identifies a cellular survival pathway in heart stem cells that involves NR4A2, ROS, and NF-κB signaling during oxidative stress. It demonstrates that blocking this pathway reduces cell death in cardiac stem cells exposed to ischemic conditions.
- NR4A2 levels increase in cardiac stem cells under oxidative stress.
- Blocking NR4A2 reduces autophagy-dependent cell death in these cells.
- The ROS/NF-κB/NR4A2 pathway drives apoptosis in ischemic heart tissue.
- Findings aim to improve survival of stem cells for heart therapy.
High glucose stimulates expression of aldosterone synthase (CYP11B2) and secretion of aldosterone in human adrenal cells.
Shimada H, Kogure N, Noro E, Kudo M, Sugawara K, Sato I, Shimizu K, Kobayashi M, Suzuki D, Parvin R, Saito-Ito T, Uruno A, Saito-Hakoda A, Rainey WE, Ito S, Yokoyama A, Sugawara A
High glucose levels increase aldosterone production in human adrenal cells by boosting the activity of the CYP11B2 gene, which may explain why people with diabetes often develop high blood pressure. This effect involves a specific DNA region (NBRE-1) and glucose metabolism, but not directly through the NURR1 protein.
- High glucose increases aldosterone production in human adrenal cells
- CYP11B2 gene activation is linked to high glucose via NBRE-1 element
- NURR1 protein levels rise with glucose but aren't required for the effect
- Glucose metabolism and calcium channels play a role in the process
- This may explain why diabetes often leads to hypertension
Direct Reprogramming of Resident NG2 Glia into Neurons with Properties of Fast-Spiking Parvalbumin-Containing Interneurons.
Pereira M, Birtele M, Shrigley S, Benitez JA, Hedlund E, Parmar M, Ottosson DR
Researchers successfully convert resident brain glial cells into functional interneurons using specific gene combinations in animal models. The study demonstrates that this reprogramming technique works across different brain regions and gene sets, though the resulting cells are not dopaminergic neurons.
- Reprogrammed neurons integrate into existing brain circuitry and mature functionally.
- The majority of converted cells become fast-spiking parvalbumin-containing interneurons.
- Gene combinations including Nurr1 generate functional neurons in vivo.
- This is preclinical animal research with no human clinical data.
NR4A proteins and neutrophil lifespan.
Allen LH
This study identifies NR4A2 and NR4A3 as critical regulators of neutrophil lifespan through a cAMP/PKA-dependent mechanism. It provides fundamental insight into the cellular function of these proteins in immune homeostasis.
- NR4A2 and NR4A3 regulate neutrophil lifespan and homeostasis.
- The mechanism involves cyclic AMP and protein kinase A signaling.
- Findings focus on basic immunology rather than neurological function.
- No clinical applications or treatments for NR4A2 syndrome are discussed.
Transcriptional profiling of human femoral mesenchymal stem cells in osteoporosis and its association with adipogenesis.
Choi YJ, Song I, Jin Y, Jin HS, Ji HM, Jeong SY, Won YY, Chung YS
This study identifies elevated NR4A2 mRNA levels in bone marrow stem cells from obese individuals, suggesting a link between this gene and fat cell formation. It does not provide information on the neurological symptoms or treatment options relevant to children with NR4A2-related syndromes.
- NR4A2 expression increases in stem cells from obese patients.
- The study focuses on bone marrow cells, not brain development.
- No clinical data or treatments for NR4A2 syndrome are presented.
- Findings relate to osteoporosis and adipogenesis mechanisms.
The Non-Survival Effects of Glial Cell Line-Derived Neurotrophic Factor on Neural Cells.
Cortés D, Carballo-Molina OA, Castellanos-Montiel MJ, Velasco I
This review describes how GDNF supports the development, maturation, and repair of various neurons beyond just keeping them alive. It highlights GDNF's role in establishing dopaminergic identity by regulating proteins like Nurr1 (NR4A2) and enhancing axonal growth. The paper also notes GDNF's involvement in motor neuron regeneration and its correlation with conditions like depression and pain.
- GDNF promotes neural precursor commitment to dopaminergic, motor, and enteric neurons.
- GDNF increases Nurr1 expression, helping cells acquire a dopaminergic identity.
- GDNF enhances axonal growth and dendritic maturation in developing neurons.
- GDNF aids motor neuron regeneration and modulates neuromuscular junctions.
- GDNF levels correlate with depression, pain, and muscular soreness.
Pitx3 and En1 determine the size and molecular programming of the dopaminergic neuronal pool.
Kouwenhoven WM, von Oerthel L, Smidt MP
This study uses mouse models to show that the transcription factors Pitx3 and En1 work together to determine the number and identity of dopaminergic neurons in the midbrain. The research confirms that Nurr1 (NR4A2) is expressed in these developing neurons, but it does not investigate NR4A2 function or treatment strategies for human patients.
- Pitx3 and En1 control the size and regional identity of dopaminergic neurons in mice.
- Without both factors, only a limited number of rudimentary dopaminergic neurons form.
- Nurr1 expression persists even when Pitx3 and En1 are absent.
- The study focuses on basic developmental biology in animal models.
- No human data or clinical relevance to NR4A2 syndrome is presented.
Suppressive effects of RXR agonist PA024 on adrenal CYP11B2 expression, aldosterone secretion and blood pressure.
Suzuki D, Saito-Hakoda A, Ito R, Shimizu K, Parvin R, Shimada H, Noro E, Suzuki S, Fujiwara I, Kagechika H, Rainey WE, Kure S, Ito S, Yokoyama A, Sugawara A
This study investigates how a specific drug affects blood pressure and hormone production in the adrenal glands, using NURR1 only as one of several molecular markers involved in this process. The research focuses entirely on hypertension and aldosterone regulation, with no direct application to NR4A2-related neurological syndromes or dopaminergic neuron development.
- The drug PA024 lowers blood pressure by suppressing aldosterone production in mice.
- NURR1 is identified as a transcription factor involved in adrenal hormone synthesis.
- The study uses human cell lines and hypertensive mouse models.
- No findings relate to NR4A2 syndrome, movement disorders, or brain development.
Relevance of the NR4A sub-family of nuclear orphan receptors in trophoblastic BeWo cell differentiation.
Malhotra SS, Gupta SK
The NR4A family of proteins plays a role in the development of placental cells, with all three members (Nor-1, Nurr-1, and Nur-77) increasing during cell differentiation. When all three are blocked together, cell fusion and hormone secretion drop, but cell death increases, suggesting they are important for placental cell function.
- NR4A proteins rise during placental cell development
- Blocking all three together harms cell fusion and hormone release
- Cells die when all three are silenced
- The three proteins can compensate for each other
- NR4A activity is linked to placental cell function
Acute and chronic effects of exercise on mRNA expression in the skeletal muscle of two mouse models of peripheral artery disease.
Nagase H, Yao S, Ikeda S
This study examines how exercise changes gene expression in the leg muscles of mice with poor blood flow, finding that training alters specific muscle-related genes. It does not investigate brain development, dopamine pathways, or NR4A2-related neurological conditions.
- The research focuses on skeletal muscle and peripheral artery disease in mice.
- It measures mRNA changes in leg muscles after acute and chronic exercise.
- NR4A2 appears only as one of several genes tracked in this vascular context.
- No findings relate to neurodevelopment, movement disorders, or human patients.
The FOXP2-Driven Network in Developmental Disorders and Neurodegeneration.
Oswald F, Klöble P, Ruland A, Rosenkranz D, Hinz B, Butter F, Ramljak S, Zechner U, Herlyn H
This study maps how the gene FOXP2 regulates other genes in human cells, identifying a network that includes NR4A2 (NURR1) among its targets. The findings link this regulatory network to various developmental and neurodegenerative conditions, providing molecular context for how these genes interact.
- FOXP2 regulates 40 genes in human cells, including NR4A2.
- The network involves signaling, metabolism, and neuron development.
- Links exist to autism, Parkinson's, and other disorders.
- No clinical data or treatment implications for NR4A2 syndrome.
Methylphenidate and Atomoxetine-Responsive Prefrontal Cortical Genetic Overlaps in "Impulsive" SHR/NCrl and Wistar Rats.
Dela Peña I, Dela Peña IJ, de la Peña JB, Kim HJ, Shin CY, Han DH, Kim BN, Ryu JH, Cheong JH
This study identifies Nr4a2 as a gene in the rat prefrontal cortex whose expression changes when impulsive behavior is treated with ADHD medications. The findings suggest that Nr4a2 and related genes may serve as biomarkers for predicting response to these drugs, though the work remains entirely in animal models.
- The study uses impulsive rat models, not humans or NR4A2 patients.
- ADHD drugs methylphenidate and atomoxetine alter Nr4a2 gene expression in rats.
- Nr4a2 is one of several genes linked to impulsivity and drug response.
- Results propose potential biomarkers for predicting ADHD medication efficacy.
- No clinical data or direct treatment implications for NR4A2 syndrome are provided.
Ligand Dependent Switch from RXR Homo- to RXR-NURR1 Heterodimerization.
Scheepstra M, Andrei SA, de Vries RMJM, Meijer FA, Ma JN, Burstein ES, Olsson R, Ottmann C, Milroy LG, Brunsveld L
Researchers designed new chemical compounds that specifically target the interaction between RXR and NURR1 proteins. These compounds alter how these proteins bind together, which could theoretically influence dopamine neuron survival pathways.
- New ligands bias RXR to form heterodimers with NURR1 instead of homodimers.
- Structural changes in the protein interface affect co-regulator recruitment.
- This is basic molecular biology with no human or animal disease model data.
- No clinical relevance or treatment potential for NR4A2 syndrome is established.
Valproate increases dopamine transporter expression through histone acetylation and enhanced promoter binding of Nurr1.
Green AL, Zhan L, Eid A, Zarbl H, Guo GL, Richardson JR
Valproate increases dopamine transporter levels in rat cells by promoting histone acetylation and enhancing the binding of Nurr1 to the DAT gene promoter. This study identifies a molecular mechanism for how valproate might influence dopaminergic signaling pathways.
- Valproate boosts dopamine transporter mRNA and protein in rat dopaminergic cells.
- The effect relies on histone acetylation at the DAT gene promoter.
- Nurr1 binding to the DAT promoter increases with valproate treatment.
- Findings are based on a rat cell line, not human patients or animals.
cDNA microarray analysis identifies NR4A2 as a novel molecule involved in the pathogenesis of Sjögren's syndrome.
Takahashi H, Tsuboi H, Asashima H, Hirota T, Kondo Y, Moriyama M, Matsumoto I, Nakamura S, Sumida T
This study finds that NR4A2 is overactive in immune cells of patients with Sjögren's syndrome, a completely different autoimmune condition from NR4A2-related neurodevelopmental disorders. The research demonstrates that blocking NR4A2 transport into cell nuclei reduces the activity of specific immune cells (Th17) involved in this unrelated disease. This work does not provide evidence for treatments or mechanisms relevant to the child's neurological condition.
- NR4A2 is elevated in T-cells of Sjögren's syndrome patients, an unrelated autoimmune disease.
- The study links NR4A2 to Th17 immune cell polarization in salivary gland inflammation.
- Inhibiting NR4A2 nuclear transport reduced immune activity in this specific context.
- No findings relate to dopaminergic neurons, Parkinson's, or NR4A2 neurodevelopmental syndromes.
Identification of potential biomarkers and therapeutic targets for human IgA nephropathy and hypertensive nephropathy by bioinformatics analysis.
Cui Y, Liu S, Cui W, Gao D, Zhou W, Luo P
This study found that NR4A2 is one of several transcription factors altered in both IgA nephropathy and hypertensive nephropathy, suggesting it may play a role in kidney disease and could be a target for future treatments.
- NR4A2 is among genes dysregulated in kidney disease
- NR4A2 is linked to inflammation and kidney damage
- Other affected genes point to immune and structural changes
- Findings may guide new therapies for kidney disease
- Results come from human kidney tissue analysis
NURR1 Downregulation Favors Osteoblastic Differentiation of MSCs.
Di Benedetto A, Posa F, Carbone C, Cantore S, Brunetti G, Centonze M, Grano M, Lo Muzio L, Cavalcanti-Adam EA, Mori G
Silencing the NURR1 gene in human dental stem cells accelerates their development into bone-forming cells. This finding demonstrates a specific role for NURR1 in bone biology rather than its known function in brain development.
- NURR1 silencing increases osteoblast marker expression in dental stem cells.
- Reduced NURR1 enhances mineral matrix deposition in long-term cultures.
- The study focuses on bone formation, not dopaminergic neurons.
- Results are from human cell lines, not animal models or patients.
Neuroimmunomodulatory properties of DPSCs in an in vitro model of Parkinson's disease.
Gnanasegaran N, Govindasamy V, Mani V, Abu Kasim NH
This study shows that dental pulp stem cells reduce inflammation and protect neurons in a laboratory model of Parkinson's disease. The cells also express Nurr1, a protein relevant to dopamine neuron development, suggesting potential for cell replacement therapy.
- Dental pulp stem cells lower inflammatory markers in Parkinson's disease models.
- The cells reduce reactive oxygen species and nitric oxide production.
- Stem cells express Nurr1, a key protein for dopamine neuron function.
- Results are from in vitro cell cultures, not human or animal trials.
Parkinsonian features in aging GFAP.HMOX1 transgenic mice overexpressing human HO-1 in the astroglial compartment.
Song W, Cressatti M, Zukor H, Liberman A, Galindez C, Schipper HM
Overexpressing the stress protein HO-1 in mouse astrocytes causes Parkinson-like symptoms, including dopamine loss and motor coordination issues. This model demonstrates that glial stress responses can drive neurodegeneration in aging, distinct from developmental disorders seen in younger mice.
- HO-1 overexpression in mouse astrocytes triggers nigrostriatal dopamine deficiency.
- Aging mice develop locomotor incoordination and stereotypy resembling Parkinsonism.
- The study links glial stress to oxidative damage and mitochondrial injury.
- Results suggest timing of glial response determines developmental vs degenerative outcomes.
NR4A orphan nuclear receptor family members, NR4A2 and NR4A3, regulate neutrophil number and survival.
Prince LR, Prosseda SD, Higgins K, Carlring J, Prestwich EC, Ogryzko NV, Rahman A, Basran A, Falciani F, Taylor P, Renshaw SA, Whyte MKB, Sabroe I
This study demonstrates that NR4A2 and NR4A3 regulate the number and survival of neutrophils, a type of white blood cell involved in inflammation. The research shows these genes are activated by inflammatory signals to prevent neutrophil death and maintain immune balance.
- NR4A2 and NR4A3 control neutrophil survival and production levels.
- Inflammatory signals activate these genes to delay neutrophil cell death.
- Reducing NR4A2/3 lowers neutrophil counts without affecting their movement.
- Findings focus on immune function, not the neurological symptoms of NR4A2 syndrome.
T Cell Transcriptomes from Paroxysmal Nocturnal Hemoglobinuria Patients Reveal Novel Signaling Pathways.
Hosokawa K, Kajigaya S, Keyvanfar K, Qiao W, Xie Y, Townsley DM, Feng X, Young NS
This study analyzes T cell gene expression in patients with Paroxysmal Nocturnal Hemoglobinuria, a blood disorder unrelated to NR4A2-related syndromes. It identifies dysregulated signaling pathways in immune cells but provides no information on neurodevelopment, dopaminergic function, or treatments for children with NR4A2 variants.
- Study focuses on Paroxysmal Nocturnal Hemoglobinuria, a rare blood disorder.
- Analyzes T cell transcriptomes from PNH patients and healthy controls.
- Identifies novel signaling pathways in immune cells, including NR4A2.
- No findings relate to neurodevelopment or pediatric care for NR4A2 syndromes.
Prostaglandin E2 is essential for efficacious skeletal muscle stem-cell function, augmenting regeneration and strength.
Ho ATV, Palla AR, Blake MR, Yucel ND, Wang YX, Magnusson KEG, Holbrook CA, Kraft PE, Delp SL, Blau HM
Prostaglandin E2 signaling through the EP4 receptor drives muscle stem cell expansion and regeneration via the Nurr1 transcription factor. Blocking this pathway with NSAIDs impairs muscle repair, while delivering PGE2 enhances it.
- PGE2 activates muscle stem cells via the EP4 receptor to boost regeneration.
- This process relies on the cAMP/CREB pathway activating Nurr1.
- NSAID use after injury hinders muscle repair and strength.
- Exogenous PGE2 delivery accelerates damaged muscle recovery.
Cystatin C as a potential therapeutic mediator against Parkinson's disease via VEGF-induced angiogenesis and enhanced neuronal autophagy in neurovascular units.
Zou J, Chen Z, Wei X, Chen Z, Fu Y, Yang X, Chen D, Wang R, Jenner P, Lu JH, Li M, Zhang Z, Tang B, Jin K, Wang Q
Cystatin C protects brain cells and improves blood vessel function in Parkinson's disease models by boosting VEGF and autophagy, suggesting a potential new treatment approach. This dual action supports both neurons and blood vessels in the brain's neurovascular units.
- Cystatin C reduces Parkinson's-related damage in mice and cells
- It increases VEGF, which helps blood vessels grow
- Cystatin C boosts autophagy, clearing toxic proteins
- It activates NURR1, a key protein for dopamine neurons
- Blocking autophagy stops Cystatin C’s benefits
Chiro-Optical Modulation for NURR1 Production from Stem Cells.
Patel M, Moon HJ, Hong JH, Jeong B
Exposing stem cells to L-polarized blue light increases the production of NURR1 and other neuronal markers. This optical method boosts mitochondrial energy and calcium levels, supporting the differentiation of stem cells into neurons.
- L-polarized blue LED exposure significantly enhances NURR1 expression in stem cells.
- The treatment increases neuronal biomarkers like neurofilament M and neuron specific enolase.
- Mitochondrial ATP and intracellular calcium levels rise, supporting neuronal differentiation.
- This approach offers a non-chemical method for engineering stem cells.
Repeated social defeat and the rewarding effects of cocaine in adult and adolescent mice: dopamine transcription factors, proBDNF signaling pathways, and the TrkB receptor in the mesolimbic system.
Montagud-Romero S, Nuñez C, Blanco-Gandia MC, Martínez-Laorden E, Aguilar MA, Navarro-Zaragoza J, Almela P, Milanés MV, Laorden ML, Miñarro J, Rodríguez-Arias M
Social stress alters dopamine and proBDNF signaling pathways in mice, with adolescent animals showing specific changes in the transcription factor Pitx3. These findings describe molecular mechanisms of stress response in rodent models rather than providing direct insights into NR4A2-related syndromes or treatments.
- Social defeat increases cocaine reward sensitivity in both adolescent and adult mice.
- Adolescent stressed mice show reduced Pitx3 levels in the ventral tegmental area.
- Adult stressed mice exhibit decreased proBDNF and TrkB receptor expression.
- Adolescent stressed mice show increased TrkB receptor expression without proBDNF changes.
- The study focuses on general dopaminergic pathways, not NR4A2-specific mechanisms.
Parathyroid Hormone Activates Phospholipase C (PLC)-Independent Protein Kinase C Signaling Pathway via Protein Kinase A (PKA)-Dependent Mechanism: A New Defined Signaling Route Would Induce Alternative Consideration to Previous Conceptions.
Tong G, Meng Y, Hao S, Hu S, He Y, Yan W, Yang D
This study maps a specific signaling route in bone cells where parathyroid hormone activates protein kinase C through a pathway involving protein kinase A. It identifies NR4A2 as one of several genes whose expression changes during this process, but it does not investigate the function or role of NR4A2 itself.
- Researchers used human kidney and mouse bone cells to map hormone signaling pathways.
- Parathyroid hormone activates protein kinase C via a protein kinase A-dependent mechanism.
- NR4A2 gene expression changes alongside other bone-related genes during this process.
- The study focuses on bone cell differentiation, not brain development or NR4A2 function.
Molecular phenotyping of transient postnatal tyrosine hydroxylase neurons in the rat bed nucleus of the stria terminalis.
Carter DA
This study characterizes a specific population of immature neurons in the rat brain that temporarily express dopamine-related markers before losing them during development. The research identifies low levels of NR4A2/NURR1 and missing forkhead transcription factors as key reasons why these neurons do not mature into stable dopamine-producing cells. These findings describe normal developmental biology in rodents rather than disease mechanisms or treatments relevant to human patients.
- The study uses rat brains, not human tissue or patient data.
- It examines transient neuron development, not NR4A2-related syndrome pathology.
- NR4A2 levels are low in these specific developing neurons.
- No clinical implications or treatment strategies are proposed.
- The work focuses on basic molecular neuroanatomy mechanisms.