Adrenal transcription regulatory genes modulated by angiotensin II and their role in steroidogenesis.
Romero DG, Rilli S, Plonczynski MW, Yanes LL, Zhou MY, Gomez-Sanchez EP, Gomez-Sanchez CE
This study identifies transcription genes regulated by angiotensin II that control key enzymes in adrenal hormone production. NR4A2 and related genes were found to boost the mineralocorticoid pathway, which may relate to adrenal disorders involving hormone imbalances.
- NR4A2 increases aldosterone synthase, favoring mineralocorticoid production
- Angiotensin II regulates several transcription genes affecting adrenal hormones
- NR4A2 and NR4A1/3 show selectivity for mineralocorticoid pathway genes
- These genes may contribute to adrenal steroidogenesis disorders
- Findings could inform treatments targeting hormone imbalances
Dopaminergic neurons intrinsic to the striatum.
Huot P, Parent A
Striatal neurons that produce dopamine may help compensate for dopamine loss in Parkinson's disease by increasing in number when dopamine levels drop, suggesting a natural repair mechanism that could be boosted to treat the disease.
- Striatal neurons can produce dopamine under low dopamine conditions
- This increase is linked to a change in existing neurons, not new ones
- Dopamine levels control how many of these neurons appear
- These neurons may help compensate for Parkinson's-related dopamine loss
- Boosting this process could be a new treatment strategy
Manipulation of proliferation and differentiation of human bone marrow-derived neural stem cells in vitro and in vivo.
Zeng Z, Yuan X, Liu G, Zeng X, Zeng X, Ng H, Chen H, Jiang T, Akasaki Y, Kessey K, Black KL, Yu JS
Human bone marrow-derived neural stem cells can be grown and turned into nerve-like cells in the lab and in living organisms by adding specific genes, including Nurr1, which helps them move and become specialized nerve cells. While Nurr1 does not boost cell growth, it does enhance their ability to migrate and mature into functional neurons.
- Nurr1 boosts neuron maturation and movement in stem cells
- Gli-1 and Shh increase stem cell growth
- Human bone marrow stem cells can become nerve cells in lab and living models
- Nurr1 overexpression has no effect on cell division
- These findings may help develop stem cell therapies for brain disorders
Generation of functional dopamine neurons from neural precursor cells isolated from the subventricular zone and white matter of the adult rat brain using Nurr1 overexpression.
Shim JW, Park CH, Bae YC, Bae JY, Chung S, Chang MY, Koh HC, Lee HS, Hwang SJ, Lee KH, Lee YS, Choi CY, Lee SH
Overexpressing the Nurr1 gene in adult rat brain precursor cells turns them into functional dopamine neurons that can survive, integrate, and improve movement in Parkinson's disease models. These engineered cells release dopamine and form proper connections, showing promise for treating Parkinson's using a patient's own brain cells.
- Nurr1 turns adult brain cells into dopamine neurons
- Cells release dopamine and form proper neural connections
- Engineered cells improve symptoms in Parkinson's rats
- Uses patient's own cells, avoiding immune rejection
- Potential for treating Parkinson's without fetal tissue
Analysis of alpha-synuclein, dopamine and parkin pathways in neuropathologically confirmed parkinsonian nigra.
Moran LB, Croisier E, Duke DC, Kalaitzakis ME, Roncaroli F, Deprez M, Dexter DT, Pearce RK, Graeber MB
In sporadic Parkinson's disease, key genes involved in dopamine production, alpha-synuclein regulation, and cellular repair are disrupted in the brain's movement control center. NR4A2, a gene linked to rare neurodevelopmental disorders, is reduced in Parkinson's brains, suggesting shared biological pathways between rare genetic syndromes and common Parkinson's disease.
- NR4A2 expression is reduced in Parkinson's disease brains
- Alpha-synuclein and dopamine pathways are disrupted together
- Parkin and other repair genes are upregulated in affected brain areas
- These changes suggest shared mechanisms between rare and common Parkinson's
- NR4A2 may play a role in both neurodevelopment and neurodegeneration
Ngn2 and Nurr1 act in synergy to induce midbrain dopaminergic neurons from expanded neural stem and progenitor cells.
Andersson EK, Irvin DK, Ahlsiö J, Parmar M
Combining two key genes, Ngn2 and Nurr1, helps turn expanded brain stem cells into mature midbrain dopamine neurons, which could improve cell therapies for Parkinson’s disease.
- Nurr1 and Ngn2 together create functional dopamine neurons
- Single genes alone do not produce full dopamine neuron identity
- This approach uses expanded stem cells for therapy potential
- Findings may help develop treatments for NR4A2-related disorders
- Relevance to human dopamine neuron development is strong
Induction of tyrosine hydroxylase expression by the transcription factor Pitx3.
Messmer K, Remington MP, Skidmore F, Fishman PS
Pitx3 and Nurr1 can both boost the production of tyrosine hydroxylase, a key enzyme in dopamine creation, in stem cells, but combining them does not improve results. This suggests that other factors beyond these two transcription factors are needed for strong dopamine neuron development.
- Pitx3 and Nurr1 both increase tyrosine hydroxylase levels
- Combining both factors offers no extra benefit
- Other regulatory elements likely control tyrosine hydroxylase
- Stem cell differentiation may need step-by-step factor exposure
Nuclear receptor 4A2 and C/EBPbeta regulate the parathyroid hormone-mediated transcriptional regulation of the 25-hydroxyvitamin D3-1alpha-hydroxylase.
Zierold C, Nehring JA, DeLuca HF
NR4A2 and C/EBPbeta work together to control the enzyme that activates vitamin D in the kidneys, with NR4A2 boosting vitamin D activation when PTH is present, but C/EBPbeta blocking this effect. This interaction may influence how the body regulates vitamin D levels.
- NR4A2 boosts vitamin D activation in kidneys
- PTH and NR4A2 together enhance vitamin D enzyme production
- C/EBPbeta reduces NR4A2 and vitamin D enzyme levels
- NR4A2 acts at a specific site on the vitamin D enzyme gene
- This pathway may affect vitamin D metabolism in humans
Profile of immediate early gene expression in the lumbar spinal cord of low-thoracic paraplegic mice.
Landry ES, Rouillard C, Levesque D, Guertin PA
After spinal cord injury in mice, the genes c-fos and nor-1 show changes in activity in the lower spinal cord, suggesting they play key roles in rewiring nerve circuits involved in movement and sensation. These changes happen over time and may reflect the nervous system's attempt to adapt after injury.
- c-fos increases in the lower spinal cord after injury
- nor-1 decreases in areas linked to movement and sensation
- Changes suggest nerve circuit reorganization after spinal injury
- Other genes like nurr1 were not detected
- Findings may help understand recovery after spinal cord injury
In vitro differentiation of cord blood unrestricted somatic stem cells expressing dopamine-associated genes into neuron-like cells.
Fallahi-Sichani M, Soleimani M, Najafi SM, Kiani J, Arefian E, Atashi A
Unrestricted somatic stem cells from cord blood can develop into neuron-like cells that express genes important for dopamine-producing brain cells, suggesting they might be useful for treating Parkinson's disease and other conditions involving dopamine loss.
- Cord blood stem cells become neuron-like cells in lab conditions
- These cells express key genes for dopamine-producing neurons
- Potential for cell therapy in Parkinson's disease
- May help treat disorders linked to dopamine deficiency
The NR4A nuclear receptor family in eosinophils.
Hashida R, Ohkura N, Saito H, Tsujimoto G
The NR4A family of nuclear receptors, including NURR1 (NR4A2), plays a key role in regulating eosinophil death, which may be harnessed to treat allergic diseases. Drugs targeting these receptors could promote the removal of harmful eosinophils by triggering their apoptosis.
- NR4A receptors control eosinophil death in allergic diseases
- NURR1 (NR4A2) is part of a family linked to immune cell regulation
- Drugs targeting NR4A may reduce harmful eosinophils
- Eosinophils from atopic dermatitis patients show altered NR4A expression
- NR4A activation could be a new treatment strategy for allergies
Carnosol, a component of rosemary (Rosmarinus officinalis L.) protects nigral dopaminergic neuronal cells.
Kim SJ, Kim JS, Cho HS, Lee HJ, Kim SY, Kim S, Lee SY, Chun HS
Carnosol, a compound in rosemary, protects dopamine-producing brain cells from damage in lab studies by reducing cell death and boosting levels of Nurr1, a protein linked to Parkinson's disease. This suggests carnosol might help slow or prevent neurodegeneration in conditions like NR4A2-related syndrome.
- Carnosol protects dopamine neurons from damage
- It boosts Nurr1, a key protein in NR4A2-related disorders
- Reduces cell death by lowering caspase-3 activity
- May help in treating Parkinson’s and related conditions
- Rosemary-derived compound shows neuroprotective potential
Acquisition of in vitro and in vivo functionality of Nurr1-induced dopamine neurons.
Park CH, Kang JS, Shin YH, Chang MY, Chung S, Koh HC, Zhu MH, Oh SB, Lee YS, Panagiotakos G, Tabar V, Studer L, Lee SH
Engineered rat neural precursor cells expressing Nurr1 along with either SHH and Bcl-XL or Mash1 develop into mature dopamine neurons that survive transplantation and reverse Parkinson's-like symptoms in rats. These findings show a path to creating functional dopamine neurons for potential therapies.
- Nurr1 + SHH/Bcl-XL or Mash1 creates mature dopamine neurons
- Cells survive and function after transplant in Parkinsonian rats
- Reverses motor deficits in animal models
- Potential for cell-based therapies for dopamine-related disorders
Chronic cocaine administration modulates the expression of transcription factors involved in midbrain dopaminergic neuron function.
Leo D, di Porzio U, Racagni G, Riva MA, Fumagalli F, Perrone-Capano C
Chronic cocaine use reduces levels of Nurr1 and Pitx3, two key transcription factors for dopamine neurons, in the rat brain, with changes lasting up to two weeks after stopping the drug. This suggests long-term disruption of dopamine neuron function, which may underlie lasting brain changes from prolonged cocaine use.
- Chronic cocaine lowers Nurr1 and Pitx3 levels in dopamine neurons
- These changes persist for weeks after stopping cocaine
- Only specific transcription factors are affected, not all
- This may explain long-term brain changes from cocaine use
Comparative analysis of layer-specific genes in Mammalian neocortex.
Watakabe A, Ichinohe N, Ohsawa S, Hashikawa T, Komatsu Y, Rockland KS, Yamamori T
This study identifies distinct neuron groups in the brain's outer layer based on their gene activity, including a specific group in layer 5 that expresses ER81 but not Nurr1, and another in layer 6 that expresses Nurr1 and is split by CTGF levels. These neuron types differ between monkeys and mice, and some send connections to other brain areas, suggesting specialized roles in brain circuitry.
- Nurr1-expressing neurons in layer 6 differ between monkeys and mice
- Specific neuron groups in layer 5 and 6 have unique gene patterns
- Some Nurr1 neurons project to other brain regions, not to the thalamus
- Gene expression varies across brain areas and species
- These neurons may play specialized roles in brain circuitry
Regulation of osteoblast differentiation by Nurr1 in MC3T3-E1 cell line and mouse calvarial osteoblasts.
Lee MK, Choi H, Gil M, Nikodem VM
Nurr1 plays a key role in bone-forming cells (osteoblasts) by promoting their development and function. Without Nurr1, these cells produce less bone-building material and show reduced activity of key bone markers.
- Nurr1 is needed for proper bone cell development
- Low Nurr1 leads to less bone-forming protein production
- Nurr1 boosts genes essential for bone formation
- This effect is seen in both lab cells and mouse bone cells
- Nurr1 may help regulate bone health beyond the brain
Microarray analyses support a role for Nurr1 in resistance to oxidative stress and neuronal differentiation in neural stem cells.
Sousa KM, Mira H, Hall AC, Jansson-Sjöstrand L, Kusakabe M, Arenas E
Nurr1 helps neural stem cells survive stress and become dopamine-producing brain cells by turning on survival genes and controlling the timing of dopamine neuron development. It also signals to other cells to boost their survival, and one key molecule it regulates, tenascin-C, normally slows down the formation of dopamine neurons.
- Nurr1 boosts survival of brain cells under stress
- Nurr1 helps neural stem cells become dopamine neurons
- Nurr1 controls timing of dopamine neuron development via tenascin-C
- Nurr1-expressing cells release signals that protect dopamine neurons
- Tenascin-C normally delays dopamine neuron maturation
Control of neurogenesis and tyrosine hydroxylase expression in neural progenitor cells through bHLH proteins and Nurr1.
Kim HJ, Sugimori M, Nakafuku M, Svendsen CN
Overexpressing specific genes can guide neural stem cells to become dopamine-producing neurons, but additional factors are needed to create fully functional ones. This research shows that combining Nurr1 with other genes helps generate dopamine neuron markers, offering a potential path for future therapies.
- Nurr1 boosts dopamine enzyme production in neurons and glia
- Combining Nurr1 with other genes creates some dopamine neurons
- More factors likely needed for fully functional dopamine neurons
- Neural stem cells from brain regions respond differently to gene changes
Identification of a series of highly potent activators of the Nurr1 signaling pathway.
Hintermann S, Chiesi M, von Krosigk U, Mathé D, Felber R, Hengerer B
Researchers discovered a new compound that strongly activates Nurr1, a protein critical for brain cells that make dopamine. This compound can cross the brain barrier and may help treat conditions linked to Nurr1 dysfunction.
- A new drug activates Nurr1, a key brain protein
- The drug reaches the brain and is highly potent
- May help conditions like Parkinson’s or NR4A2-related syndrome
- Represents a potential treatment path forward
The zebrafish mutation m865 affects formation of dopaminergic neurons and neuronal survival, and maps to a genetic interval containing the sepiapterin reductase locus.
Ettl AK, Holzschuh J, Driever W
The m865 zebrafish mutation disrupts the development of dopaminergic neurons and causes cell death in the retina and brain, leading to smaller eyes and heads. The mutation affects a gene called sepiapterin reductase (spr), which is important for neuronal survival and may be linked to human NR4A2-related disorders.
- m865 mutation impairs dopaminergic neuron development
- Increased cell death occurs in the retina and brain
- Gene affected is sepiapterin reductase (spr)
- spr is linked to neuronal survival and dopamine systems
- Findings may inform NR4A2-related neurodevelopmental conditions
Multiple signaling pathways regulate the transcriptional activity of the orphan nuclear receptor NURR1.
Sacchetti P, Carpentier R, Ségard P, Olivé-Cren C, Lefebvre P
Nurr1, a key protein for dopamine-producing brain cells, is controlled by multiple signaling pathways, including activation by ERK5 and inhibition by LIM Kinase 1. These signals influence how Nurr1 turns on genes needed for proper neuron function and development.
- ERK5 boosts Nurr1 activity, helping dopamine neurons function
- LIM Kinase 1 turns down Nurr1 activity, possibly disrupting neuron health
- Nurr1 acts as a hub for multiple signals that shape dopamine neurons
- Specific parts of Nurr1 are critical for responding to ERK5 signals
- These pathways may be targets for future therapies in NR4A2-related disorders
Characterization of the Nurr1 ligand-binding domain co-activator interaction surface.
Volakakis N, Malewicz M, Kadkhodai B, Perlmann T, Benoit G
The Nurr1 protein, linked to NR4A2-related syndrome, has a unique surface that helps it interact with other proteins to control gene activity. This surface is critical for Nurr1's function and affects how quickly the protein breaks down in cells, offering new clues about how to treat the condition.
- Nurr1 has a unique protein interaction surface not seen in other nuclear receptors
- Mutations in this surface can either destroy or boost Nurr1 activity
- Nurr1's activity is tied to how fast it is broken down by the cell
- This surface may be a target for drugs to treat NR4A2-related disorders
- The findings explain how Nurr1 controls gene expression in a new way
Transplanted dopamine neurons derived from primate ES cells preferentially innervate DARPP-32 striatal progenitors within the graft.
Ferrari D, Sanchez-Pernaute R, Lee H, Studer L, Isacson O
Primate embryonic stem cells can be turned into dopamine neurons that grow into the brain and connect specifically to the right target cells, showing they are mature and functional. These neurons behave like natural dopamine neurons and preferentially link to brain cells involved in movement control.
- Dopamine neurons from primate stem cells connect to correct brain targets
- Cells show mature features and proper gene expression
- Grafts improve movement-related behaviors in Parkinson's model
- Targeting is specific to movement control circuits
- Results support stem cell therapy for Parkinson's disease
VIP is a transcriptional target of Nurr1 in dopaminergic cells.
Luo Y, Henricksen LA, Giuliano RE, Prifti L, Callahan LM, Federoff HJ
Nurr1, a gene critical for dopamine neuron development and survival, directly controls the production of VIP, a protein that helps protect these neurons from stress. This link suggests VIP may play a key role in keeping dopamine neurons healthy and could be a target for therapies in NR4A2-related disorders.
- Nurr1 turns on the VIP gene in dopamine neurons
- VIP helps protect neurons from damage
- Low Nurr1 leads to low VIP levels in the brain
- VIP may support neuron survival in NR4A2-related conditions
Identification of a potent agonist of the orphan nuclear receptor Nurr1.
Dubois C, Hengerer B, Mattes H
A new drug compound has been discovered that strongly activates Nurr1, a protein linked to brain development and function. This activation could potentially help treat conditions caused by Nurr1 dysfunction, including NR4A2-related syndrome.
- A new drug activates Nurr1, the protein affected in NR4A2 syndrome.
- Activating Nurr1 may improve brain function in affected individuals.
- This compound is a promising candidate for future therapies.
- The discovery could lead to treatments targeting the root cause of NR4A2-related disorders.
The K+ channel gene, Kcnb1: genomic structure and characterization of its 5'-regulatory region as part of an overlapping gene group.
Roder K, Koren G
This study identifies how the Kcnb1 gene is regulated, finding that a key brain and heart gene, Kcnb1, is controlled by two promoters, one of which responds to the NR4A2 protein (Nurr1). The research shows that NR4A2 can directly influence Kcnb1 activity, suggesting a potential link between NR4A2 dysfunction and heart or brain issues. The findings may help explain why Kcnb1 is reduced in some heart diseases and could inform future treatments.
- NR4A2 (Nurr1) binds to the Kcnb1 promoter
- Kcnb1 is regulated by two promoters in brain and heart
- NR4A2 loss may reduce Kcnb1 expression
- Kcnb1 levels rise under osmotic stress
- Kcnb1 may affect heart and brain cell function
[Effects of Nurr1 down-regulation on the expression of tyrosine hydroxylase and neurite extension in dopaminergic cells.].
Wu YC, Cai YQ, Zhao YB, Fei J
Reducing Nurr1 levels in dopamine-producing cells significantly lowers the production of tyrosine hydroxylase, a key enzyme for dopamine creation, and impairs the growth of nerve fibers essential for brain communication. This confirms Nurr1's critical role in maintaining dopamine cell function and structure.
- Nurr1 loss reduces dopamine-making enzyme levels
- Nurr1 is essential for nerve fiber growth in dopamine cells
- Lower Nurr1 disrupts dopamine cell development
- This model helps study Parkinson’s and related disorders
NR4A orphan nuclear receptors are transcriptional regulators of hepatic glucose metabolism.
Pei L, Waki H, Vaitheesvaran B, Wilpitz DC, Kurland IJ, Tontonoz P
NR4A2 (Nurr1) is a key regulator of glucose production in the liver, and its activity is linked to blood sugar levels in diabetes. Inhibiting NR4A2 reduces glucose production and lowers blood sugar in diabetic mice, suggesting it could be a target for treating diabetes.
- NR4A2 controls liver glucose production
- High NR4A2 levels raise blood sugar
- Blocking NR4A2 lowers blood sugar in mice
- NR4A2 is linked to diabetes-related glucose issues
Nur77 gene knockout alters dopamine neuron biochemical activity and dopamine turnover.
Gilbert F, Morissette M, St-Hilaire M, Paquet B, Rouillard C, Di Paolo T, Lévesque D
Mice without the Nur77 gene have higher dopamine activity and altered dopamine processing, which suggests Nur77 helps regulate dopamine neuron function. These changes include increased dopamine turnover and altered responses to dopamine-related drugs.
- Nur77 loss increases dopamine neuron activity
- Dopamine turnover is disrupted without Nur77
- Mice show heightened sensitivity to dopamine drugs
- Enzymes controlling dopamine are altered
- Findings suggest Nur77 regulates dopamine balance
Enriched NCAM-positive cells form functional dopaminergic neurons in the rat model of Parkinson's disease.
Ravindran G, Rao HS
Enriching neural progenitor cells from human stem cells using a specific marker (NCAM) helps create safe, functional dopamine-producing neurons that survive and integrate in the brains of Parkinson's disease rats without forming tumors, a promising step toward cell-based therapies.
- NCAM-positive cells were isolated and turned into dopamine neurons
- No tumors formed after transplant in Parkinson's rats
- Cells expressed key dopamine markers and integrated into brain tissue
- The method avoids risky factors like retinoic acid
- This approach could improve future cell therapies for Parkinson's
Nuclear receptors Nur77, Nurr1, and NOR-1 expressed in atherosclerotic lesion macrophages reduce lipid loading and inflammatory responses.
Bonta PI, van Tiel CM, Vos M, Pols TW, van Thienen JV, Ferreira V, Arkenbout EK, Seppen J, Spek CA, van der Poll T, Pannekoek H, de Vries CJ
The NR4A family of nuclear receptors, including Nurr1 (NR4A2), helps reduce inflammation and fat buildup in macrophages involved in atherosclerosis. These receptors act as natural brakes on harmful immune responses and foam cell formation in human plaque cells.
- NR4A receptors are active in human atherosclerotic plaques
- Nurr1 reduces inflammation and fat accumulation in macrophages
- Boosting NR4A activity may protect against plaque progression
- NR4A loss worsens inflammation and lipid loading
- Findings suggest NR4A pathways could be therapeutic targets
Translated mutation in the Nurr1 gene as a cause for Parkinson's disease.
Grimes DA, Han F, Panisset M, Racacho L, Xiao F, Zou R, Westaff K, Bulman DE
A rare new mutation in the Nurr1 gene was found in one person with Parkinson's disease, suggesting that changes in this gene can cause the disease. This is the first confirmed coding mutation in Nurr1 linked to Parkinson's, and it may affect how the protein works.
- A new Nurr1 mutation was found in a single Parkinson's patient
- The mutation changes a key protein building block
- This mutation may disrupt normal protein function
- Nurr1 mutations are rare but could cause Parkinson's
- Functional studies are ongoing to confirm impact
Embryonic stem cell-derived neuron models of Parkinson's disease exhibit delayed neuronal death.
Yamashita H, Nakamura T, Takahashi T, Nagano Y, Hiji M, Hirabayashi T, Amano T, Yagi T, Sakai N, Kohriyama T, Matsumoto M
This study used stem cells to create dopamine-producing neurons that model Parkinson's disease, showing that neurons with faulty alpha-synuclein genes gradually die over time, mimicking the slow progression seen in patients. The cell death is linked to protein buildup and stress, and can be partially reduced by blocking certain cell death pathways.
- Neurons made from stem cells show delayed death like in Parkinson's
- Faulty alpha-synuclein causes gradual neuron loss over weeks
- Cell death is tied to protein clumps and stress responses
- Blocking key cell death signals slows neuron death
- Model works only in dopamine neurons, not other brain cells
PGC-1alpha is induced by parathyroid hormone and coactivates Nurr1-mediated promoter activity in osteoblasts.
Nervina JM, Magyar CE, Pirih FQ, Tetradis S
PGC-1alpha is activated by parathyroid hormone in bone-building cells and works with Nurr1 to boost the activity of genes involved in bone formation. This partnership depends on cAMP signaling and direct physical interaction between PGC-1alpha and Nurr1.
- PGC-1alpha is turned on by PTH in bone cells
- It boosts Nurr1’s ability to activate bone-related genes
- The two proteins bind directly and need cAMP signaling
- This interaction helps control bone formation
- Nurr1 and PGC-1alpha may be key players in bone health
Neuroprotective effects of cystamine in aged parkinsonian mice.
Tremblay ME, Saint-Pierre M, Bourhis E, Lévesque D, Rouillard C, Cicchetti F
Cystamine protects dopamine-producing neurons in aged mice with Parkinson's-like brain damage, improving key markers of brain health and function.
- Cystamine reduced brain damage in Parkinson's-like mice
- Improved dopamine neuron survival and function
- Increased levels of protective Nurr1 protein
- Neuroprotection seen with early treatment
- Suggests potential for treating Parkinson's-related conditions
Differential actions of the proneural genes encoding Mash1 and neurogenins in Nurr1-induced dopamine neuron differentiation.
Park CH, Kang JS, Kim JS, Chung S, Koh JY, Yoon EH, Jo AY, Chang MY, Koh HC, Hwang S, Suh-Kim H, Lee YS, Kim KS, Lee SH
Mash1 helps Nurr1 turn precursor cells into mature, functional dopamine neurons, while other similar genes block this process. This suggests Mash1 could be key to developing better treatments for NR4A2-related disorders by promoting proper neuron maturation.
- Mash1 promotes mature dopamine neuron development with Nurr1
- Other bHLH genes like Ngn2 block dopamine neuron formation
- Mash1's role is specific and essential in midbrain development
- The helix-loop-helix domain determines whether genes help or hinder
- Findings may guide therapies to improve neuron maturation
Transforming growth factor beta is required for differentiation of mouse mesencephalic progenitors into dopaminergic neurons in vitro and in vivo: ectopic induction in dorsal mesencephalon.
Roussa E, Wiehle M, Dünker N, Becker-Katins S, Oehlke O, Krieglstein K
Transforming growth factor beta (TGF-beta) is essential for turning mouse midbrain progenitor cells into dopamine-producing neurons, both in lab dishes and in living mice. It works with other key signals and can even force non-dopamine cells in the brain to become dopamine neurons, which may help develop new treatments for Parkinson's disease.
- TGF-beta drives midbrain cells to become dopamine neurons
- TGF-beta works with Shh and FGF8 to boost dopamine cell formation
- TGF-beta can create dopamine neurons in areas that normally don't make them
- Blocking TGF-beta reduces dopamine neurons in the brain
- This pathway may help repair brain cells in Parkinson’s disease