| 2003 |
NF155 binds directly to contactin, but coexpression of Caspr inhibits this interaction by associating with contactin during biosynthesis and promoting a low-molecular-weight, endoglycosidase H-sensitive isoform of contactin at the cell membrane that cannot bind NF155. Deletion of Caspr in mice shifts contactin from the LMw to HMw glycoform, confirming Caspr regulates contactin processing and transport to the cell surface. |
Cell-based binding assays, co-expression studies, endoglycosidase H treatment, Caspr knockout mice with biochemical fractionation |
The Journal of cell biology |
High |
14676309
|
| 2005 |
NF155 promotes neural cell adhesion and neurite outgrowth, and the RGD motif in its third FnIII repeat is critical for cell spreading and neurite outgrowth. Conversely, NF186 inhibits cell adhesion and neurite outgrowth, with inhibition associated with its mucin-like domain. |
Fc fusion protein binding assays, cell adhesion assays, neurite outgrowth assays with domain-deletion and RGD-mutant constructs |
Molecular and cellular neurosciences |
Medium |
16061393
|
| 2012 |
Doublecortin (DCX) promotes endocytosis of neurofascin from soma and dendrites, thereby increasing neurofascin accumulation at the axon initial segment. This endocytic adaptor function is independent of DCX's microtubule-binding activity, and the patient allele DCX-G253D retains microtubule binding but is deficient in promoting neurofascin endocytosis. |
Live imaging and surface distribution assays in cultured rat neurons, DCX mutant constructs (microtubule-binding mutants, patient allele G253D), endocytosis assays |
The Journal of neuroscience |
High |
22649224
|
| 2014 |
Inducible ablation of neuronal Neurofascin (Nfasc186) in adult mice causes >99% loss at PNS nodes and 94% loss at CNS nodes. Gliomedin and NrCAM at PNS nodes and brevican at CNS nodes are largely lost, Nav channels persist at nodes with ~40% reduction, and there is a 38% reduction in PNS conduction velocity. Loss of Nfasc186 also provokes CNS paranodal disorganization. This establishes distinct roles for Nfasc186 in node maintenance in PNS vs. CNS. |
Inducible conditional knockout mice (neuronal-specific Nfasc ablation), immunofluorescence, electrophysiology |
The Journal of neuroscience |
High |
24719087
|
| 2015 |
Nfasc140 is a neuronal isoform strongly expressed during mouse embryonic development that can cluster voltage-gated sodium channels (Nav) at the developing node of Ranvier and restore electrophysiological function independently of Nfasc155 and Nfasc186. Nfasc140 is re-expressed in demyelinated white matter lesions of multiple sclerosis postmortem brain tissue. |
Immunostaining of knockout and wild-type mouse nerves, electrophysiology, human MS postmortem tissue immunostaining |
The Journal of neuroscience |
High |
25653379
|
| 2016 |
The QKI RNA-binding proteins in oligodendrocytes regulate alternative splicing of the Nfasc gene to produce the Nfasc155 isoform. Deletion of QKI in oligodendrocytes results in loss of Nfasc155 and deterioration of axoglial junctions in the spinal cord, leading to demyelination and paralysis. |
Conditional knockout mice (Olig2-Cre and inducible PLP-CreERT), immunostaining, RNA splicing analysis |
The Journal of neuroscience |
High |
27053216
|
| 2017 |
Alternative splicing of Nfasc is spatio-temporally regulated in cerebellar neurons. High K+-induced depolarization triggers a shift from Nfasc140 to Nfasc186 splicing in cerebellar granule cells. The neural RNA-binding protein Rbfox controls isoform selection at exons 26–29. |
RT-PCR splicing analysis in mouse brain, depolarization experiments in cerebellar granule cells, Rbfox functional assays |
Scientific reports |
Medium |
28900163
|
| 2017 |
NFASC silencing in non-small cell lung cancer (NSCLC) cell lines decreased cell migration and caused morphological changes including rearrangements of the actin cytoskeleton and changes in F-actin networks in migrating cells, without affecting proliferation or viability. This identifies NFASC as a regulator of NSCLC cell motility. |
siRNA knockdown in four NSCLC cell lines, migration assays, actin cytoskeleton staining |
Molecular carcinogenesis |
Medium |
28418179
|
| 2019 |
Patient-derived anti-Nfasc155 IgG4 antibodies target Nfasc155 on Schwann cell surface, reduce Nfasc155 protein levels, and prevent paranodal complex formation in neonatal animals without inhibiting Nfasc155 binding to contactin-1/CASPR1 or inducing target internalization. Chronic intrathecal infusion in adult animals induces loss of Nfasc155, paranodal specialization disruption, and conduction alterations in motor nerves. |
Passive transfer experiments in neonatal animals, chronic intrathecal infusion in adult animals, immunofluorescence, nerve conduction studies, cell aggregation assays |
The Journal of clinical investigation |
High |
30869655
|
| 2019 |
Biallelic loss-of-function variants in NFASC (including a frameshift causing absent Nfasc155 expression and missense variants reducing expression) severely impair Nfasc155–CNTN1/CASPR1 complex interaction in cell aggregation assays, disrupt paranodal junction morphology in myelinated fibers of affected individuals, and cause neurodevelopmental disorder with central and peripheral demyelination. |
Exome/genome sequencing, immunostaining of patient myelinated fibers, cell aggregation assays, expression studies |
Brain |
High |
31501903
|
| 2019 |
Anti-Caspr1 IgG4 antibodies can penetrate paranodal regions and disrupt the integrity of the Nfasc155/CNTN1/Caspr1 complex, as shown by intraneural injection and immunohistochemistry on skin biopsy of a single patient. |
Immunohistochemistry on skin biopsy, intraneural injection, cell aggregation assay |
Neurology(R) neuroimmunology & neuroinflammation |
Low |
31753915
|
| 2019 |
A homozygous p.V1122E mutation in NFASC affecting a conserved transmembrane domain residue leads to significant loss of Neurofascin protein in iPSC-derived neurons from affected siblings, establishing this residue as critical for protein stability. |
iPSC-derived neurons from patients, immunostaining for Neurofascin protein levels |
Parkinsonism & related disorders |
Medium |
30850329
|
| 2020 |
Neurofascin186 is transported to the soma and axon terminal via vesicles that fuse with the plasma membrane; after insertion, Nfasc186 is highly mobile in the axonal membrane and diffuses bidirectionally until immobilized at the axon initial segment through interaction with AnkyrinG. Kv7.3 is recruited to the AIS by the same mechanism. |
Live imaging (time-lapse fluorescence microscopy), FRAP, surface diffusion tracking in neurons |
eLife |
High |
32903174
|
| 2022 |
Crystal structures of the contactin 1–NF155 adhesion complex reveal that conserved Ig1–2 interfaces form competing heterophilic contactin 1–NF155 and homophilic NF155 complexes. The Ig1–Ig4 horseshoe structure of the complex defines the ~7.4 nm paranodal spacing. Post-translational glycosylation and splice differences modulate complex formation. Contactin 1 also forms low-affinity clusters through Ig3–6 interfaces. |
X-ray crystallography, biophysical binding assays, cell-clustering assays |
Nature communications |
High |
36329006
|
| 2023 |
Anti-pan-neurofascin antibodies (recognizing all NF isoforms) have direct access to nodes of Ranvier in myelinating dorsal root ganglia co-cultures and impair paranode formation, cause destruction of paranodal architecture, and alter paranodal myelin and sensory neurons in a titre-dependent manner. IgG3 subclass pan-neurofascin antibodies bind complement and exert cytotoxic effects in vitro, distinct from IgG4 NF155 antibodies which do not activate complement. |
Myelinating DRG co-cultures, immunofluorescence, complement binding and cytotoxicity assays, ELISA, cell-based assays |
Brain |
High |
36346134
|
| 2025 |
Super-resolution imaging (dSTORM) of anti-pan-neurofascin nodopathy nerve biopsy reveals decreased NF155 and Caspr-1 density at paranodes and decreased NF186 density at nodes with preserved colocalization of adhesion proteins and intact sodium channel distribution. Axonal beta-IV spectrin is altered only in severely damaged nodes, indicating largely preserved axonal integrity with potentially reversible decreases in nodal/paranodal adhesion proteins. |
dSTORM super-resolution fluorescence microscopy on sural nerve biopsy teased fibers |
Frontiers in immunology |
Medium |
40051618
|
| 2025 |
The epitope for anti-NF155 IgG4 autoantibodies in autoimmune nodopathy patients is located in the Fn3-Fn4 region (third to fourth fibronectin type III domain) of NF155 but not in the Fn3 or Fn4 domains alone. Autoantibodies in 104/104 anti-NF155+ patients bound Fn3-Fn4, and none reacted with NF186. |
Flow cytometric cell-based assay with truncation variants of NF155 stably/transiently expressed in HEK293 cells, Western blotting |
Annals of clinical and translational neurology |
High |
40129269
|
| 2026 |
NF186 at the axon initial segment (AIS) of pyramidal neurons is necessary for chandelier cells (ChCs) to develop synaptic axon cartridges along the AIS. Gliomedin, a known NF186 receptor at nodes of Ranvier, is preferentially expressed in ChCs and mediates ChC axon cartridge development by acting as a major receptor for NF186 at the AIS. |
Conditional knockout mice (NF186 deletion in pyramidal neurons), immunostaining, synaptic connectivity analysis |
The Journal of neuroscience |
High |
41260922
|
| 2019 |
Oligodendrocyte Neurofascin (Nfasc155) regulates two independent aspects of CNS myelination: (1) it prevents mistargeting of myelin to neuronal cell bodies (myelin targeting), and (2) it promotes myelin sheath growth. Disruption of Caspr (the neuronal binding partner of oligodendrocyte Neurofascin) impairs myelin sheath growth but does not affect myelin targeting, indicating these two functions are separable. |
Genetic screen in zebrafish, complementary knockout analyses in mice, time-lapse live imaging |
Developmental cell |
High |
31761670
|