| 2000 |
SEMA6A-1 (SEMA6A) directly binds EVL (Ena/VASP-like protein) via a novel carboxyl-terminal zyxin-like domain; SEMA6A-1 colocalizes with EVL, and this interaction is selective (does not extend to other Ena/VASP family members Mena/VASP), suggesting a role for SEMA6A in retrograde signaling linked to actin/cytoskeletal dynamics. |
Yeast two-hybrid, pulldown/binding assay, colocalization in heterologous system; mutagenesis of the zyxin-like C-terminal domain |
The Journal of biological chemistry |
Medium |
10993894
|
| 2005 |
Sema6A is required for cerebellar granule cell migration: Sema6A-deficient mice show ectopic granule cells remaining in the molecular layer, and analysis of chimeras demonstrates this function is primarily non-cell-autonomous. Sema6A controls initiation of radial migration, likely via modulation of nuclear/soma translocation. |
Knockout mouse analysis, mouse chimera studies, cerebellar explant migration and neurite outgrowth assays |
Nature neuroscience |
High |
16205717
|
| 2008 |
PlexinA2 is the receptor for Sema6A in migrating cerebellar granule cells: PlexinA2-deficient mice phenocopy Sema6A mutants; an ENU-induced single amino acid substitution in the semaphorin-binding domain of PlexinA2 abolishes Sema6A binding; chimera studies show PlexinA2 acts cell-autonomously; Sema6A/PlexinA2 signaling controls nucleus-centrosome coupling and coordinated motility during migration. |
Homologous recombination knockout, ENU mutagenesis, binding assay (Sema6A–PlexinA2 interaction), mouse chimera studies, time-lapse video microscopy of centrosome–nucleus coupling |
Nature neuroscience |
High |
18327254
|
| 2010 |
Sema6A engages in a cis interaction with its receptor PlexinA4 on the same cell surface, which inhibits binding of exogenous Sema6A ligand in trans and thereby suppresses the repulsive response. This cis Sema6A–PlexinA4 interaction differentially modulates axon guidance responsiveness in sympathetic vs. sensory neurons. |
Heterologous expression systems for cis/trans binding assays, sensory neuron collapse assays with Sema6A knockout (gain of sensitivity), PlexinA4-dependent rescue experiments |
The EMBO journal |
High |
20606624
|
| 2012 |
Oligodendrocyte-expressed Sema6A inhibits adult axon growth via PlexinA2: adult sensory neurons are inhibited by Sema6A in a PlexinA2-dependent manner (complete protection in PlexinA2−/− cultures); PlexinA2−/− mice show enhanced corticospinal axon sprouting and improved functional recovery after pyramidotomy. |
In vitro sensory neuron inhibition assay with PlexinA2 KO, adult mouse pyramidotomy model with axonal sprouting quantification and behavioral testing |
Molecular and cellular neurosciences |
High |
22564823
|
| 2012 |
Sema6A expressed by myelinating oligodendrocytes is required for oligodendrocyte differentiation and myelination: Sema6A-deficient mice show delayed oligodendrocyte differentiation, delayed node of Ranvier development, and reduced MBP expression. In vitro, Sema6A-null oligodendrocytes show morphological defects and impaired myelination in DRG co-culture. |
Knockout mouse analysis (optic nerve, anterior commissure), purified oligodendrocyte differentiation assay, myelinating co-culture with DRG neurons |
Glia |
High |
22777942
|
| 2013 |
Sema6A expressed in oligodendrocyte precursor cells (OPCs) controls their autonomous migration via ligand-receptor interaction with PlexinA4 on surrounding cells: Sema6A knockdown in OPC line FBD-102b reduces migration, and Plexin-A4-expressing cells segregate from Sema6A-expressing cells in co-culture. |
siRNA knockdown in OPC cell line, in vitro migration assay, co-culture segregation assay, semaphorin gradient assay with PlexinA4 knockdown |
Neuroscience letters |
Medium |
23376059
|
| 2014 |
Sema6A and PlexinA2 are required for eye vesicle cohesion in zebrafish: knockdown of either disrupts vesicle integrity, with eye progenitors failing to enter or delaminating from the eye epithelium. Epistasis (simultaneous knockdown of both) rescues vesicle integrity, placing Sema6A–PlexinA2-mediated repulsion as the mechanism maintaining tissue cohesion. |
Morpholino knockdown in zebrafish, time-lapse microscopy, explant experiments, double-knockdown epistasis rescue |
Development (Cambridge, England) |
High |
24917502
|
| 2014 |
Time-lapse analysis of cerebellar slice electroporation confirms that Sema6A and PlexinA2 loss preferentially perturbs migration of later-born granule cells, and defects in tangential migration in bipolar granule cells precede the switch to radial migration; Sema6A loss does not perturb radial migration itself. |
Cerebellar slice model, in utero/ex vivo electroporation, time-lapse video microscopy in Sema6A and PlexinA2 knockout mice |
Molecular and cellular neurosciences |
Medium |
25284064
|
| 2015 |
Sema6A silencing in BRAFV600E melanoma cells causes cytoskeletal remodeling with loss of stress fibers leading to cell death, loss of anchorage-independent growth, and inhibited chemotaxis/invasion; forced Sema6A overexpression in NRASQ61R cells induces anchorage-independent growth and invasiveness, indicating Sema6A regulates actin cytoskeleton and cell survival downstream of BRAF signaling. |
siRNA silencing, forced overexpression, cytoskeletal imaging, anchorage-independent growth assay, chemotaxis/invasion assay in melanoma cell lines |
Oncotarget |
Medium |
25576923
|
| 2016 |
Sema6A/PlexinA2 signaling regulates interkinetic nuclear migration of retinal progenitor cells (RPCs): in Sema6A and PlexinA2 knockout mice, RPC migration is blocked at the apical side of the neuroblastic layer, as shown by time-lapse videomicroscopy. |
Knockout mouse analysis, time-lapse videomicroscopy of embryonic retina |
Development, growth & differentiation |
Medium |
27301906
|
| 2017 |
SEMA6A is a direct target of miR-203: luciferase reporter assay confirmed miR-203 directly targets the SEMA6A 3'-UTR, suppressing SEMA6A mRNA and protein levels; miR-203-mediated SEMA6A downregulation promotes apoptosis in oral cancer cells. |
Luciferase 3'-UTR reporter assay, miRNA overexpression, Western blot, miRNA array |
Anticancer research |
Medium |
28982852
|
| 2017 |
SEMA6A is repressed post-transcriptionally by miR-27b in endothelial cells; miR-27b overexpression represses SEMA6A (and SEMA6D), and silencing of SEMA6A rescues reduced pericyte adhesion caused by miR-27 inhibition, demonstrating that SEMA6A acts as a repulsive signal limiting pericyte recruitment. |
miR-27b overexpression/inhibition in endothelial cells, pericyte adhesion and co-culture assays, siRNA silencing of SEMA6A, in vivo LNA antisense oligonucleotide inhibition |
Cardiovascular research |
Medium |
28453731
|
| 2018 |
Sema6A is required for formation of axonal projections from the medial terminal nucleus (MTN) to the nucleus of the optic tract (NOT) in the accessory optic system; using Cre-driver lines, Sema6A was shown to be necessary for establishing AOS connections in multiple locations. |
Conditional genetic approaches using Cre lines (Pcdh9-Cre, Pdzk1ip1-Cre), axon projection tracing in Sema6A null mice |
The Journal of comparative neurology |
Medium |
30076594
|
| 2019 |
Sema6A-plexin-A2 axis stimulates RANKL-induced osteoclastogenesis via PLCγ-mediated NFATc1 activation: soluble Fc-Sema6A binds plexin-A2 in osteoclast cell lysates; Sema6A treatment enhances RANKL-induced osteoclast differentiation, an effect abolished by plexin-A2 neutralization; Sema6A-plexin-A2 enhances PLCγ activation and downstream NFATc1; pharmacological PLCγ inhibition (U73122) abrogates these effects. |
Fc-fusion protein pulldown/Co-IP, osteoclastogenesis differentiation assay, neutralizing antibody, pharmacological inhibitor (U73122), Western blot for PLCγ and NFATc1 activation |
Life sciences |
Medium |
30826495
|
| 2019 |
C11orf46 (ARL14EP) represses Sema6A transcription via SETDB1-mediated repressive chromatin remodeling; C11orf46 haploinsufficiency leads to Sema6a hyperexpression and disrupted transcallosal projections; RNA-guided epigenetic editing (dCas9-SunTag with C11orf46) of Sema6a promoters normalized SEMA6A expression and rescued transcallosal dysconnectivity. |
C11orf46 knockdown, gene expression profiling, dCas9-SunTag epigenetic editing, chromatin remodeling assays, in vivo transcallosal projection tracing |
Nature communications |
Medium |
31511512
|
| 2022 |
SEMA6A drives actin cytoskeleton remodeling in BRAF-mutant melanoma via RhoA-dependent YAP activation; SEMA6A depletion impairs the SEMA6A/RhoA/YAP axis; dual BRAF/MEK inhibition induces this axis, and SEMA6A depletion rescues efficacy of dabrafenib+trametinib in fibroblast co-culture conditions mimicking tumor microenvironment. |
Inducible SEMA6A silencing, RhoA and YAP activity assays, fibroblast-melanoma co-culture model, drug treatment experiments in vitro |
Journal of experimental & clinical cancer research : CR |
Medium |
35440004
|
| 2023 |
SEMA6A is a direct target gene of HIF-2α in the VHL-HIF-2α axis in ccRCC: ChIP and reporter assays show HIF-2α directly activates SEMA6A transcription in hypoxia. SEMA6A physically interacts with SEC62 and promotes Wnt/β-catenin pathway activation through SEC62-dependent β-catenin stabilization; SEMA6A depletion impairs HIF-2α-induced Wnt/β-catenin activation and ccRCC cell proliferation in vitro and in vivo. |
ChIP assay, luciferase reporter assay, Co-immunoprecipitation (SEMA6A–SEC62 interaction), siRNA depletion, xenograft mouse model |
Cell death & disease |
Medium |
36739418
|
| 2023 |
Semaphorin-6A, expressed by median eminence-resident oligodendrocytes adjacent to GnRH neuron projections, is required for GnRH neuron innervation and puberty onset; via its receptor Plexin-A2, Sema6A controls median eminence vascular permeability to maintain neuroendocrine homeostasis. A novel pathogenic variant of SEMA6A is identified in patients with delayed puberty. |
Sema6A KO mouse analysis, in vitro and in vivo vascular permeability assays, Plexin-A2 receptor requirement established, immunostaining, human genetic variant identification |
Nature communications |
High |
38062045
|
| 2024 |
The intracellular (cytoplasmic) domain of Sema6A is required for retinal integrity, Müller glia end feet strength, and protection against retinal cell death in zebrafish, but is dispensable for eye size and retinal patterning; this distinguishes reverse signaling (requiring the intracellular domain) from forward signaling functions of Sema6A. |
Sema6A morphant rescue experiments in zebrafish with full-length Sema6A vs. intracellular domain-deleted Sema6A (Sema6A-ΔC); retinal histology, Müller glia analysis, cell death quantification |
Journal of cell science |
Medium |
38963001
|
| 2024 |
Sema6A reverse signaling contributes to hippocampal mossy fiber partitioning into SPT and IPT bundles: loss of neuronal Sema6a causes defective MF patterning including incomplete IPT/SPT partition and overextended IPT axons; PlexinA2 controls MF fasciculation via both GAP-dependent and GAP-independent mechanisms, and a genetic interaction between Plxna2 and Ncam1 (but not Plxna4 and Ncam1) was identified for SPT/IPT formation. |
Conditional KO mouse lines (neuron-specific Sema6a), PlexinA2 GAP domain mutants, anti-PlexinA2 proximity biotinylation proteomics, double-KO genetic epistasis (Plxna2/Ncam1) |
bioRxivpreprint |
Medium |
bio_10.1101_2024.12.15.628586
|