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Human MFN2 Protein expressed in HEK-293 Cells - ABIN2726078
Wang, Zhang, Li, Tang, Siedlak, Fujioka, Liu, Su, Pi, Wang: MFN2 couples glutamate excitotoxicity and mitochondrial dysfunction in motor neurons. in The Journal of biological chemistry 2015
Depletion of Mitofusin (dMfn) or Opa1 led to dysfunctional mitochondria, activation of Target of rapamycin (TOR) and a marked accumulation of lipid droplets. Enhancement of lipid utilization by the mitochondria attenuated TOR activation and rescued the loss of GSCs that was caused by inhibition of mitochondrial fusion.
both dominant negative and dominant active forms of mitofusin can cause Charcot-Marie-Tooth disease type 2A-associated defects.
binds cyclin A mRNA and shortens its poly-A tail to reduce Cyclin A protein level during oocyte maturation
Enhancing the profusion gene mitofusin/marf is beneficial in an in vivo model of TDP-43 proteinopathies, serving as a potential therapeutic target.
activation of endoplasmic reticulum stress by defective mitochondria is neurotoxic in pink1 and parkin flies and that the reduction of this signalling is neuroprotective, independently of defective mitochondria.
Clu is upstream of and binds to VCP in vivo and promotes VCP-dependent Marf degradation in vitro Marf accumulates in whole muscle lysates of clu-deficient flies and is destabilized upon Clu overexpression. Thus, Clu is essential for mitochondrial homeostasis and functions in concert with Parkin and VCP for Marf degradation to promote damaged mitochondrial clearance.
lack of ChChd3 leads to inactivation of Hippo activity under normal development, which is also dependent on the transcriptional coactivator Yorkie (Yki). Furthermore, loss of ChChd3 induces oxidative stress and activates the JNK pathway. In addition, depletion of other mitochondrial fusion components, Opa1 or Marf, inactivates the Hippo pathway as well.
Marf is required for mitochondrial fusion and transport in long axons.
Expression of Mfn2 and endoplasmic reticulum (ER) stress reduction in flies lacking Marf corrected ER shape, attenuating the developmental and motor defects.
Parkin deficiency and resulting mitophagic disruption produces cardiomyopathy which can be contained by suppressing mitofusin.
mfn2 mutations alter mitochondrial dynamics and induce retinal and cardiac pathology
Data report here that Drosophila Reaper can induce mitochondrial fragmentation by binding to and inhibiting the pro-fusion protein MFN2 and its Drosophila counterpart dMFN/Marf.
MARF and Opa1 control mitochondrial and cardiac function in Drosophila.
The PINK1/Parkin pathway affects mitochondrial fission/fusion as suggested by previous genetic interaction studies.
Dmfn-mRNA was widely expressed during embryogenesis accumulating in the mesoderm and endoderm during gut development, during oogenesis with transcripts maternally deposited into the early embryo and in the male germ line.
Mst1 overexpression inhibits mitophagy activity via suppressing the ERK-Mfn2 pathway, ultimately augmenting IL-24-inducd esophageal cancer death via enhanced mitochondrial stress.
MFN2 expression in the hypertrophic cardiomyopathy is regulated by microRNA-20.
MiR-17-5p modulates mitochondrial function of the genioglossus muscle satellite cells through targeting Mfn2 in hypoxia
The DNA methylation level of Mfn2 was significantly lower in hypertensive patients than in control subjects, which may be an independent risk factor for essential hypertension.
Six tagging SNPs of Mfn2 (rs2236057, rs3766741, rs2236058, rs17037564, rs2295281, and rs2336384) were genotyped. CC genotype of rs2295281 was highly linked to an increased risk of thoracic aortic disease (TAd). TT genotype and CT genotype of rs2295281 have a lower risk for TAD. rs2236058 was highly linked to the risk of TAD based on recessive genetic model, which indicated that the GG genotype was a protective factor.
HSG role in the proliferation and apoptosis of lung adenocarcinoma cells.
Mechanistically, parkin/PINK1 catalyze a rapid burst of Mfn2 phosphoubiquitination to trigger p97-dependent disassembly of Mfn2 complexes from the outer mitochondrial membrane, dissociating mitochondria from the endoplasmic reticulum.
MFN2 may regulate T cell immune functions primarily through the Ca2+-calcineurin-NFAT pathway
heptad repeat domain of Mitofusin proteins induces membrane fusion and possesses a conserved amphipathic helix that folds upon interaction with the lipid bilayer surface.
The mRNA upregulation of Mitofusin 1 and 2 provides first insight into the complex changes of mitochondrial dynamics in cardiomyocytes of patients with reversible heart failure due to tachycardiomyopathy.
MFN2 has roles in human sperm motility and cryoprotective potentials
Data show that mitofusin 2 (MFN2) was mostly distributed in the cytoplasm of syncytiotrophoblasts.
The results lead to a revised understanding of Mfn 2 as single-spanning outer membrane proteins with an Nout-Cin orientation, providing functional insight into the IMS contribution to redox-regulated fusion events.
Mfn2 protects dopaminergic neurons exposed to paraquat both in vitro and in vivo: Implications for idiopathic Parkinson's disease.
this study provides novel insights into the tumor progression associated with MFN2 deficiency and suggests that the importance of mTORC2 inhibitor in the treatment of MFN2 downregulated cancer patients.
Collectively, the present study demonstrated mitochondrial fission as a tumor suppression process that is regulated by the HIF/miR125a/Mfn2 pathways, acting to restrict PANC1 cell survival, energy metabolism and migration, with potential implications for novel approaches for PC therapy.
a critical role of Mfn2 in CD4(+) T cell apoptosis in sepsis and the underlying mechanism of autophagy deficiency.
Loss of Yap reduced SIRT1 expression and inhibited Mfn2-mediated mitophagy. Collectively, our results identified Hippo-Yap as a tumor promoter in gastric cancer that was mediated via activation of the SIRT1/Mfn2/mitophagy axis, with potential applications to gastric cancer therapy involving cancer survival and migration.
The overexpression of Mfn2 could trigger cervical tumour apoptosis in vitro and in vivo, which was related to the mitochondrial pathway, and may provide a new treatment target for cervical carcinoma.
Data suggest that mitofusin-2 (MFN2) may be involved in cervical cancer pathogenesis as an oncogene and might serve as a biomarker of cervical squamous cell carcinoma (SCC).
EET enhances renal function in obese mice resulting in restoration of HO-1-Mfn1/2 signaling, and decrease in hypertension through inhibition of sodium chloride co-transporter.
that Nuclear receptor subfamily 4 group A member 1 modulated Mfn2 expression via the MAPK-ERK-CREB signaling pathway
Loss of MFN2, previously implicated in the pathogenesis of other neurodegenerative diseases, also contributes to the pathogenesis in cisplatin-induced neuropathy.
The authors conclude that proper development of the lens and lens transparency depend on normal Mfn2 gene function.
miR-497 promotes proliferation and inhibits apoptosis of cardiomyocytes by downregulating the expression of Mfn2 in a mouse model of myocardial I/R injury.
This study explicitly demonstrated that mitofusin 2 could ameliorate Ischemia Reperfusion injury mainly through promoting autophagy.
knockdown attenuates apoptosis in hypoxia
3D electron tomography shows that MFN2-deficient cardiac mitochondria are larger in volume, more elongated and have fewer mitochondria-sarcoplasmic reticulum contacts.
These findings provide insights into potential mechanisms of Mfn2-mediated cellular alterations, which may have significant implications for oocyte maturation.
findings indicate that down-regulation of Mfn2 may have an impact on the maturation and fertilization of immature oocytes in vitro by modulating meiosis and mitochondrial function.
BAT (brown adipose tissue) adaptation to obesity is regulated by Mfn2 and with BAT-Mfn2 absent, BAT contribution to prevention of insulin resistance is independent and inversely correlated to whole-body cold-stimulated thermogenesis.
Mfn2 stands as a bona fide endoplasmic-mitochondria tether whose ablation decreases interorganellar juxtaposition and communication.
Mitofusin 2 - one of a few proteins involved in a maintenance of an appropriate mitochondrial architecture, and in the consequence in the regulation of mitochondrial metabolism and calcium signalling, the controlling of the mitochondrial DNA level, and the regulation of cell proliferation and differentiation is the focus. [REVIEW]
Despite apparent mitochondrial dysfunction, hearts deficient in both Mfn1 and Mfn2 are protected against acute myocardial infarction due to impaired mitochondria/sarcoplasmic reticulum tethering.
Presenilin 2 (PS2), mutations in which underlie familial Alzheimer's disease (FAD), promotes endoplasmic reticulum-mitochondria coupling only in the presence of mitofusin 2 (Mfn2).
The data of this study suggest that post-translational modification of Mfn2 is associated with its dysregulation during a window of metabolic vulnerability that precedes glaucomatous degeneration.
Study demonstrated that deregulation of mfn2 played a critical role in the mitochondrial disorder during the progression of Alzheimer's disease, and its decreased expression was regulated at least in part by miR-195. Therefore, upregulation of mfn2 expression by decreasing the level of miR-195 might be a potential new therapeutic strategy for treatment of Alzheimer's disease.
Mfn2 downregulation or the exogenous expression of normal Parkin restored cytosolic Ca(2+) transients in fibroblasts from patients with PARK2 mutations, a catalytically inactive Parkinson's disease (PD)-related Parkin variant had no effect. Parkin is directly involved in regulating ER-mitochondria contacts and provide new insight into the role of the loss of Parkin function in PD development.
Altogether, these results demonstrate that Mfn2 is a mediator of mitochondria to lipid droplet interactions, influencing lipolytic processes and whole-body energy homeostasis.
we demonstrated that by modulating mitochondrial energy metabolism through Mfn2 and mitochondrial Ca2+, PPAR-b took an important role in neuronal differentiation induced by flavonoid compound 4a
MFN2 mutation status should be investigated in patients presenting with early-onset recessively inherited axonal CMT
These results highlight the essential role of mitofusin 2 in the motor axon development and demonstrate the potential of zebrafish as a suitable and complementary platform for dissecting pathogenetic mechanisms of MFN2 mutations in vivo.
A highly unusual splicing defect, where an exonic single base exchange leads to the retention of the preceding intron, was identified in MFN2.
This gene encodes a mitochondrial membrane protein that participates in mitochondrial fusion and contributes to the maintenance and operation of the mitochondrial network. This protein is involved in the regulation of vascular smooth muscle cell proliferation, and it may play a role in the pathophysiology of obesity. Mutations in this gene cause Charcot-Marie-Tooth disease type 2A2, and hereditary motor and sensory neuropathy VI, which are both disorders of the peripheral nervous system. Defects in this gene have also been associated with early-onset stroke. Two transcript variants encoding the same protein have been identified.
, drosophila mitofusin
, mitochondrial assembly regulatory factor
, mitofusin 2
, hyperplasia suppressor
, transmembrane GTPase MFN2
, HSG protein
, hypertension related protein 1
, hypertension-related protein 1
, hypertension-related protein
, mitochondrial transmembrane GTPase FZO1A