| 2009 |
Miro1 physically links mitochondria to KIF5 kinesin motor proteins, enabling microtubule-based transport. Ca2+ binding to Miro1's EF-hand domains (at micromolar levels) inhibits this linkage, halting mitochondrial movement. Mutation of EF-hand domains to prevent Ca2+ binding blocked glutamate/NMDA receptor-induced mitochondrial stopping but preserved basal motility. |
Dominant-negative EF-hand mutant expression, live-cell imaging, neuronal activity manipulation (glutamate/NMDA stimulation), Co-IP of Miro1 with KIF5 |
Neuron |
High |
19249275
|
| 2008 |
Miro1 recruits the adaptor protein Grif-1 (TRAK2) to mitochondria in a GTPase-dependent manner. This Miro1–Grif-1 complex promotes anterograde transport of mitochondria into neuronal processes. Mutation of Miro1's first GTPase domain impairs Grif-1 recruitment and alters mitochondrial distribution and morphology. |
Co-IP, overexpression/dominant-negative constructs, live neuronal imaging, subcellular fractionation |
Molecular and cellular neurosciences |
High |
19103291
|
| 2014 |
Miro1 knockout in mice depletes mitochondria from corticospinal tract axons and causes progressive upper motor neuron disease and developmental defects in cranial motor nuclei. Miro1-deficient neurons show defective retrograde axonal mitochondrial transport but retain normal mitochondrial respiratory function and Ca2+-mediated inhibition of movement. |
Neuron-specific Miro1 knockout mice, immunofluorescence, neurological behavioral analysis, axonal transport assays |
Proceedings of the National Academy of Sciences of the United States of America |
High |
25136135
|
| 2014 |
Parkin ubiquitylates Miro1 at conserved lysine residues (K153, K230, K235, K330, K572) in a PINK1 phosphorylation-dependent manner. PINK1 phosphorylation of Parkin at Ser65 is required for substrate (Miro1) ubiquitylation. Miro1 serves as a direct substrate of activated Parkin E3 ligase. |
In vitro E3 ligase reconstitution assay with recombinant full-length untagged Parkin and Miro1, mass spectrometry identification of ubiquitylation sites, mutagenesis of Parkin catalytic cysteine and disease variants |
Open biology |
High |
24647965
|
| 2017 |
Miro1 deletion in mouse embryonic fibroblasts restricts mitochondria to the perinuclear area, depleting peripheral ATP:ADP ratios, and thereby impairs actin dynamics, lamellipodia protrusion, focal adhesion assembly/stability, and cell migration (both collective and single-cell). |
Miro1-/- MEF cells, genetically encoded ATP:ADP biosensor (PercevalHR), live-cell imaging, focal adhesion immunofluorescence, migration assays |
Molecular biology of the cell |
High |
28615318
|
| 2013 |
DISC1 forms a complex with TRAK1 (trafficking kinesin-binding protein 1) and Miro1 on mitochondria and specifically promotes anterograde axonal mitochondrial transport. A rare DISC1 variant (37W) impairs anterograde transport and redistributes mitochondrial DISC1. |
Co-IP (DISC1–TRAK1–Miro1 complex), live neuronal axon imaging, disease-variant functional analysis |
Human molecular genetics |
Medium |
24092329
|
| 2014 |
Miro1 regulates intercellular mitochondrial transfer from mesenchymal stem cells (MSC) to epithelial cells. Miro1 overexpression in MSC enhances mitochondrial transfer and therapeutic rescue of epithelial injury; Miro1 knockdown reduces transfer efficacy. |
Miro1 overexpression/knockdown in MSC, fluorescent mitochondria tracking, mouse models of airway injury and allergic inflammation |
The EMBO journal |
Medium |
24431222
|
| 2014 |
Miro-1 associates with the dynein motor complex on lymphocyte mitochondria, and Miro-1 silencing impairs mitochondrial redistribution to the MTOC during chemokine CXCL12-induced polarization, reducing myosin II activation and actin polymerization, thereby impairing lymphocyte adhesion and migration. |
Miro-1 siRNA knockdown, co-IP with dynein, live-cell imaging, flow adhesion assays |
Molecular and cellular biology |
Medium |
24492963
|
| 2017 |
ALS mutant SOD1 reduces endogenous Miro1 protein levels through PINK1/Parkin-dependent degradation (not via elevated cytosolic Ca2+), causing impaired anterograde axonal mitochondrial transport. Miro1 overexpression or PINK1 ablation rescues this transport deficit. |
ALS mutant SOD1 transfection in cortical and motor neurons, Miro1 protein level quantification, mitochondrial transport imaging, Parkin-dependence shown by co-expression experiments, Ca2+ measurements |
Human molecular genetics |
Medium |
28973175
|
| 2018 |
Miro1 and Miro2 are identified as mitochondrial receptors for myosin XIX (Myo19). Miro1 binds directly to the C-terminal tail of Myo19, recruits it to mitochondria in vivo, and this recruitment is regulated by the GTPase state of Miro1's N-terminal Rho-GTPase domain. Myo19 protein stability depends on its association with Miro1/2. |
Proximity labeling, direct binding assays (pulldown), in vivo recruitment assays, Miro1/2 knockdown and overexpression, protein stability analysis |
Journal of cell science |
High |
30111583
|
| 2018 |
Miro1, through its EF-hand domain 1, senses cytosolic Ca2+ elevation and mediates a distinct mitochondrial shape transition (MiST) that is independent of classical fission or swelling. Ca2+-dependent disruption of the Miro1/KIF5B/tubulin complex is controlled by the EF1 domain. Miro1-dependent MiST is required for autophagy/mitophagy initiation. |
EF-hand mutant expression, live-cell Ca2+ manipulation, GPCR activation, morphometric analysis, Miro1 KO cells, autophagy/mitophagy assays |
Cell reports |
High |
29694881
|
| 2016 |
Miro1 Ca2+-sensing (EF-hand) function is required for activity-dependent repositioning of mitochondria to presynaptic terminals during prolonged neuronal activity. This repositioning decreases presynaptic Ca2+ signals and neurotransmitter release, enabling homeostatic plasticity. |
Miro1 EF-hand mutant neurons, genetically encoded presynaptic Ca2+ indicator SyGCaMP5, live imaging, electrophysiology |
EMBO reports |
High |
28039205
|
| 2015 |
Miro1 Ca2+-sensing EF-hand domains regulate activity-dependent mitochondrial confinement in astrocytic processes near synapses. Miro1-mediated mitochondrial positioning reciprocally regulates intracellular Ca2+ signaling levels in astrocytic processes. |
EF-hand mutant Miro1 expression, live-cell confocal microscopy in rat organotypic hippocampal slices, Ca2+ imaging |
The Journal of neuroscience |
High |
26631479
|
| 2017 |
Three splice variants of human Miro1 (var2, var3, var4) containing sequence insertions upstream of the transmembrane domain localize to peroxisomes, recognized by the cytosolic receptor Pex19. Peroxisomal Miro1 variants act as adaptors linking peroxisomes to TRAK2-containing microtubule transport complexes, promoting long-range peroxisome movement. |
Identification and characterization of splice variants, peroxisome localization by immunofluorescence, Pex19 interaction studies, MIRO1 knockdown/re-expression, live-cell peroxisome tracking |
The Journal of cell biology |
High |
29222186
|
| 2018 |
Miro1 localizes to peroxisomes (in addition to mitochondria) and regulates microtubule-dependent peroxisome motility. Miro1's transmembrane domain mediates interaction with the peroxisomal membrane chaperone Pex19. Miro1-mediated pulling forces contribute to peroxisome membrane elongation and proliferation. |
Microscopy, live-cell imaging, mathematical modelling, peroxisome-targeted Miro1 fusion protein, Miro1 knockdown |
Traffic |
Medium |
29364559
|
| 2019 |
In Parkinson's disease patient fibroblasts (>94%), Miro1 fails to be removed from depolarized mitochondria, blocking initiation of mitophagy. PINK1, Parkin, and LRRK2 are required molecular helpers for Miro1 removal from dysfunctional mitochondria. A small molecule that reduces Miro1 levels repairs this defect and rescues locomotor deficits and dopaminergic neurodegeneration in patient-derived neurons and fly PD models. |
Biochemical Miro1 depolarization assay in patient fibroblasts, iPSC-derived neurons, Drosophila PD models, small molecule screen |
Cell metabolism |
High |
31564441
|
| 2019 |
RHOT1 mutations in PD patients (het c.815G>A; het c.1348C>T) reduce mitochondrial-ER contact sites (MERCs) and disrupt Ca2+ homeostasis in patient-derived fibroblasts, impairing energy metabolism and increasing mitophagy. |
Patient fibroblast live-cell imaging, immunocytochemistry for MERCs, Ca2+ homeostasis assays, mitophagy quantification |
Antioxidants & redox signaling |
Medium |
31303019
|
| 2020 |
Miro1 Ser156 phosphorylation is a PINK1-regulated modification affecting Miro1 steady-state protein levels and degradation during mitophagy. A phospho-null S156A mutation causes significant depletion of Miro1 protein, impairs further degradation upon mitophagy induction, leads to slightly elongated mitochondria, and reduces mitochondrial oxygen consumption with depletion of OXPHOS complexes III and V in human dopaminergic neurons. |
CRISPR/Cas9 gene-edited iPSC (homozygous S156A), differentiation to dopaminergic neurons, mitophagy induction (CCCP), immunoblotting, Seahorse respirometry, live-cell mitochondrial movement imaging |
Cells |
Medium |
35455950
|
| 2020 |
DISC1 promotes anterograde mitochondrial transport in a manner dependent on Miro1's GTP-bound (active) state at the first GTPase domain. The first GTPase domain of Miro1 determines the direction of mitochondrial transport. |
Miro1 GTPase domain mutants, live neuronal imaging, DISC1 co-expression experiments |
Frontiers in cell and developmental biology |
Medium |
32637409
|
| 2020 |
Miro1 interacts with Mitofusin (MFN) and inhibits MFN-mediated mitochondrial outer membrane fusion in response to elevated mitochondrial Ca2+ concentration. This inhibition requires Miro1's EF-hand domain 1. Lowering mitochondrial Ca2+ or knocking down Miro1/2 promotes network fusion. |
Co-IP, proximity labeling proteomics (BioID), EF-hand mutant expression, ectopic MFN expression, MCU inhibitor treatment, Miro1/2 knockdown |
Journal of cellular biochemistry |
Medium |
34431132
|
| 2020 |
Miro1 deletion in Miro1-/- MEFs restricts subcellular H2O2 to the perinuclear area and prevents peripheral oxidation of cytosolic peroxiredoxin 2 (PRX2) after mitochondrial complex I inhibition. Local H2O2 levels correlate with focal adhesion size and abundance; Miro1-/- cells have smaller focal adhesions with reduced vinculin and p130Cas phosphorylation. |
Miro1-/- MEFs, genetically encoded H2O2 biosensor HyPer7, PRX2/PRX3 oxidation state, focal adhesion immunofluorescence, rotenone treatment |
Redox biology |
Medium |
33341544
|
| 2018 |
Mitochondrial calcium uniporter (MCU) interacts with Miro1 through MCU's N-terminal domain, which traverses the outer mitochondrial membrane. This MCU–Miro1 interaction is required for Miro1-directed mitochondrial movement; Miro1 is a novel component of the MCU complex. |
Co-IP, domain deletion/mutation of MCU N-terminus, mitochondrial transport imaging in neurons, MCU overexpression/knockdown |
The Journal of neuroscience |
Medium |
29686046
|
| 2020 |
Miro1-mutant neurons (R272Q) show increased MERC number (vs. decreased in fibroblasts), altered mitochondrial dynamics, increased sensitivity to Ca2+ stress, reduced mitochondrial clearance, and blocked autophagic flux, indicating that mutant Miro1 disrupts ER-mitochondrial tethering and autophagic flux in neurons. |
iPSC-derived PD patient neurons (Miro1-R272Q), live-cell imaging, immunocytochemistry for MERCs, mitophagy assays, western blotting for autophagy markers |
Human molecular genetics |
Medium |
32280985
|
| 2020 |
Peroxisomal fission is negatively regulated by Miro1 and Miro2 via suppression of Drp1-dependent fission, shared with their function on mitochondria. Peroxisomal targeting of Miro is regulated by the first GTPase domain and is mediated through an interaction of its transmembrane domain with the peroxisomal membrane protein chaperone Pex19. |
Miro1/2 KO cells, Drp1 dependence assays, Pex19 interaction studies, peroxisome morphology analysis by microscopy |
EMBO reports |
Medium |
31894645
|
| 2020 |
Crystal structure of the human Miro1 N-terminal GTPase domain (1.7Å) reveals it bound to GTP in a non-catalytic configuration. Two conserved surfaces ('SELFYY' and 'ITIP' motifs) are identified as potential dimerization or binding partner interfaces. SAXS data model the intact soluble HsMiro1/2 as a crescent-shaped assembly. |
X-ray crystallography (1.7Å, PDB 6D71), SAXS of intact soluble domain |
Journal of structural biology |
High |
33132189
|
| 2023 |
MIRO-1 (C. elegans ortholog) interacts with VDAC-1 at the outer mitochondrial membrane; this interaction depends on residue E473 of MIRO-1 and K163 of VDAC-1. The MIRO-1 E473G point mutation disrupts this interaction and reduces mitochondrial membrane potential. |
Co-IP, point mutagenesis (E473G in MIRO-1, K163 in VDAC-1), mitochondrial membrane potential measurements in C. elegans |
EMBO reports |
Medium |
37306041
|
| 2022 |
PD-associated Miro1 R272Q mutation (located in the first EF-hand/calcium-binding domain) causes mitochondrial fragmentation, reduced cristae and ATP5A, impaired mitochondrial calcium buffering (phenocopied by MCU inhibition), reduced mitochondrial respiration, and defective dopamine neurotransmitter regulation via monoamine oxidase in dopaminergic neurons. |
CRISPR gene-edited iPSC (heterozygous R272Q), iPSC-derived dopaminergic neurons, mitophagy assays (CCCP), Ca2+ imaging (Thapsigargin), Seahorse respirometry, catecholamine neurotransmitter assays |
Frontiers in molecular neuroscience |
Medium |
36533136
|
| 2022 |
The formin mDia2 stabilizes MIRO1 protein in cancer-associated fibroblasts. Loss of mDia2 or MIRO1 reduces peripheral mitochondrial positioning, lowers peripheral ATP levels and CAF-tumor contact-site ATP, causes metabolic dysfunction, and suppresses secretion of protumorigenic proteins, implicating an activin A–mDia2–MIRO1 axis in CAF function. |
mDia2/MIRO1 knockdown in fibroblasts and CAFs, mitochondrial localization imaging, ATP biosensor, proteomic secretome analysis, in vivo tumor models |
Cancer research |
Medium |
35997559
|
| 2025 |
Cryo-EM structure of the MIRO1–TRAK1 complex reveals TRAK1 binds MIRO1 at two distinct sites: TRAK1(569-623) binds in a cleft between the nGTPase and first EF-hand pair; TRAK1(425-428) binds a pocket between the second EF-hand pair and cGTPase. The complex dimerizes via interactions through the second EF-hand pair and cGTPase. Both sites are required for TRAK1 mitochondrial localization, validated by mutagenesis and binding assays. |
Cryo-EM structure determination, mutagenesis of both binding sites, binding assays, cell-based mitochondrial localization assays |
Nature communications |
High |
40615373
|
| 2025 |
A conserved region in the flexible linker between the Ubl and RING0 domains of Parkin is indispensable for Parkin–Miro1 interaction and is required for Miro1 ubiquitination. This linker region explains fast kinetics of Miro1 ubiquitination and provides a biochemical basis for Miro1-dependent Parkin recruitment to the outer mitochondrial membrane prior to activation. |
Recombinant protein interaction assays, mutagenesis of Parkin linker region, in vitro ubiquitination assays, cellular Parkin recruitment assays |
The Journal of cell biology |
High |
40576561
|
| 2025 |
Patient-derived iPSC neurons and knock-in mice expressing Miro1 p.R272Q (murine orthologue p.R285Q) show increased oxidative stress, disrupted mitochondrial bioenergetics, elevated α-synuclein levels, calcium-dependent calpain activation with α-synuclein cleavage, and significant dopaminergic neuron loss with phospho-α-synuclein accumulation in striatum. |
iPSC-derived midbrain organoids and dopaminergic neurons (isogenic controls), Miro1 p.R285Q knock-in mice, metabolic assays, Ca2+ measurements, calpain activity assays, immunohistochemistry, behavioral analysis |
Brain : a journal of neurology |
High |
39913247
|
| 2025 |
Miro1 accumulates in skeletal muscle of obese/T2D mice and humans due to impaired insulin-mediated AKT–Miro1 interaction at the outer mitochondrial membrane. Muscle-specific Miro1 deletion improves insulin action and mitochondrial oxidative capacity. Exercise training reduces skeletal muscle Miro1 accumulation in T2D patients, correlating with improved insulin sensitivity. |
Human clinical exercise intervention (randomized, N=24 T2D patients), muscle-specific Miro1 KO mice, AKT-Miro1 interaction assays, metabolic/insulin sensitivity measurements, Seahorse respirometry |
medRxivpreprint |
Medium |
41030931
|
| 2025 |
MIRO1 maintains mitochondrial cristae integrity and ETC complex I activity and super-complex formation in vascular smooth muscle cells (VSMCs), enabling PDGF-stimulated ATP production for G1/S cell-cycle progression. A MIRO1 mutant lacking EF hands (Ca2+-sensing) only partially rescues these effects, indicating that both mitochondrial positioning (EF-hand-dependent) and cristae integrity (EF-hand-independent) contribute to VSMC proliferation. |
Smooth-muscle-specific Miro1 KO mice, VSMC KD, mitochondrial cristae electron microscopy, ETC complex activity assays, cell-cycle analysis, ATP measurements, human coronary artery VSMC knockdown |
bioRxivpreprint |
Medium |
39185180
|
| 2025 |
MIRO1 is required for dynamic increases in mitochondria-ER contact sites (MERCs) during G1/S cell-cycle progression. MIRO1 interacts with GRP75 (detected by proximity-ligation assay with VDAC1-IP3R at MERCs). MIRO1 EF-hand and transmembrane domain mutants fail to rescue cell proliferation or MERC formation. MIRO1 deficiency blocks G1/S transition and impairs ER Ca2+ release and mitochondrial Ca2+ uptake. |
Fibroblast-specific Miro1 KO, proximity-ligation assay, split-GFP ER/mitochondria contact assay, mitochondrial Ca2+/ATP measurements, MIRO1 domain mutants, cell cycle analysis |
Cells |
Medium |
40214436
|
| 2016 |
In Xenopus embryos, the mitochondrial GTPase Rhot1 regulates microtubule-dependent mitochondrial trafficking required for aggregation of germinal granule components during primordial germ cell formation. Dominant-negative Rhot1ΔC (lacking transmembrane domain) inhibited germline-mitochondria aggregation and prevented germinal granule component aggregation, reducing PGC number. |
Dominant-negative Rhot1ΔC expression in Xenopus embryos, fluorescence imaging of germline mitochondria and germinal granules, PGC counting |
Development, growth & differentiation |
Medium |
27585825
|
| 2022 |
Miro1 depletion in mouse oocytes via oocyte-specific KO disrupts mitochondrial spatial distribution (causing perinuclear and cortical aggregates) and reduces polar body extrusion by ~20%, implicating Miro1 as a mitochondrial adaptor setting mitochondrial distribution in oocytes. |
Oocyte-specific Miro1 conditional KO, live imaging of mitochondrial distribution, polar body extrusion quantification, embryo development in vitro |
Frontiers in cell and developmental biology |
Medium |
36325364
|
| 2025 |
MIRO1 associates with cytoskeleton and cell cycle proteins (by mass spectrometry), regulates dynein motor for MTOC dynamics at the GV stage (determining meiotic resumption), and regulates Aurora A and KIF11 for meiotic spindle assembly in porcine and mouse oocytes. MIRO1 also interacts with DRP1, Parkin, and LAMP2 for mitochondrial dynamics and mitophagy during oocyte meiosis. |
Mass spectrometry, siRNA/morpholino knockdown, rescue by Miro1 mRNA injection, immunofluorescence of spindle/MTOC/mitochondria in mouse and porcine oocytes |
Science China. Life sciences |
Medium |
39815032
|
| 2021 |
Miro1 conditional deletion in parvalbumin (PV+) interneurons in mice impairs Miro1-directed mitochondrial trafficking, alters mitochondrial distribution and axonal arborization of PV+ interneurons, increases hippocampal γ-oscillation frequency ex vivo, and promotes anxiolysis, without abolishing PV+ interneuron-mediated inhibition. |
Cre-mediated Miro1 KO in PV+ interneurons, live and fixed imaging, ex vivo hippocampal γ-oscillation recording, behavioral assays |
eLife |
Medium |
34190042
|
| 2025 |
Miro1 N-terminal GTPase domain activity is required for ER-mitochondria contact (ERMC) formation in differentiating neurons. Glucocorticoid-induced downregulation of Miro1 impairs ERMC formation and increases Drp1 Ser616 phosphorylation (promoting fission). Miro1 overexpression restores ERMC formation, increases mitochondrial Ca2+ uptake, and reduces Drp1-Ser616 phosphorylation. |
AAV-mediated expression of Miro1 WT and N-terminal GTPase mutant (P26V) in hippocampal neurons of prenatally stressed mice, hiPSC-derived neurons, Drp1 phosphorylation analysis, ERMC imaging |
Cell communication and signaling |
Medium |
40176126
|
| 2014 |
CK2β (regulatory subunit of Casein Kinase II) promotes PINK1-cytoplasmic isoform (PINK1-cyto)/Parkin-mediated degradation of Miro1, independent of CK2α. CK2β facilitates direct interaction between PINK1-cyto and Miro1 as shown by co-immunoprecipitation. |
HEK293 cell transfection, Western blot for Miro1 protein levels, co-immunoprecipitation |
Sheng wu yi xue gong cheng xue za zhi |
Low |
25868250
|