| 2001 |
BACE1 (Asp2) localizes to low-buoyant density, noncaveolar lipid rafts in an cholesterol-dependent manner; depletion of raft cholesterol abrogates this association and the raft fraction contains other components of the amyloidogenic pathway including APP. |
Detergent and non-detergent lipid raft fractionation, immunoisolation of caveolin-containing vesicles, cholesterol depletion experiments in three cell lines |
Current biology : CB |
High |
11525745
|
| 2002 |
BACE1 protein levels and activity are increased by oxidative stress products (4-hydroxynonenal, HNE) generated by ascorbate/FeSO4 or H2O2/FeSO4 in NT2 neurons, and this is accompanied by increased APP C-terminal fragment production; alpha-tocopherol pretreatment prevents BACE1 induction. |
Treatment of NT2 neurons with pro-oxidant stimuli, western blot for BACE protein, measurement of APP carboxy-terminal fragments, antioxidant protection assay |
Neurobiology of disease |
High |
12270690
|
| 2004 |
BACE1 protein is degraded via the ubiquitin-proteasome pathway; proteasome inhibitor lactacystin stabilizes BACE1, BACE1 is ubiquitinated, and proteasome inhibition increases APP C99 production and Aβ generation. |
Proteasome inhibitor treatment (lactacystin), western blot, ubiquitination assay, Aβ and C99 measurement in stably transfected cells |
FASEB journal |
High |
15289451
|
| 2004 |
BACE1 translation is negatively regulated by multiple upstream ATGs in its 5' UTR; conditions favoring upstream ATG skipping or alternative splicing that removes upstream ATGs relieve this inhibition and increase BACE1 protein; activated astrocytes show increased BACE1 translation independently of splicing. |
Reporter assays with BACE1 5'UTR constructs, mutagenesis of upstream ATGs, alternative splicing analysis, cell-type specific translation assays |
Nucleic acids research |
High |
15034149
|
| 2005 |
BACE1 is degraded via the lysosomal pathway; lysosomal inhibitors cause BACE1 accumulation in LAMP2-positive late endosomal/lysosomal compartments; the C-terminal di-leucine motif (L499/L500) is required for efficient lysosomal targeting of BACE1. |
Lysosomal inhibitor treatment (chloroquine, NH4Cl), immunofluorescence colocalization with LAMP2, di-leucine motif mutagenesis (BACE-LL/AA), western blot in multiple cell types including primary neurons |
The Journal of biological chemistry |
High |
16033761
|
| 2005 |
BACE1 deficiency in mice results in almost complete block of Aβ generation in neurons (but not glia), indicating BACE1 is the rate-limiting neuronal β-secretase; BACE1-null mice show altered steady-state inactivation of voltage-gated sodium channels in neurons. |
Genetic knockout mice (bace1-/-, bace2-/-, double knockout), biochemical Aβ measurement, electrophysiology of voltage-gated sodium channels |
The Journal of biological chemistry |
High |
15987683
|
| 2006 |
Low concentrations of heparin activate BACE1 by binding to its pro-domain, increasing Vmax and decreasing Km; heparin stimulates autocatalytic cleavage of the protease domain; mature BACE1 (pro sequence removed) cannot be stimulated by heparin, indicating the pro domain is required. |
In vitro recombinant BACE1 enzyme activity assays with heparin at varying concentrations, heparin affinity chromatography, zymogen vs. mature enzyme comparison |
Biochemistry |
High |
16716081
|
| 2007 |
GGA3, an adaptor protein involved in BACE trafficking, regulates BACE protein levels and β-secretase activity; caspase activation during cerebral ischemia depletes GGA3, leading to post-translational stabilization of BACE and increased Aβ; RNAi silencing of GGA3 elevates BACE and Aβ levels. |
RNAi silencing, caspase activation experiments, western blot for GGA3 and BACE in ischemia models and AD brain samples, Aβ measurement |
Neuron |
High |
17553422
|
| 2007 |
BACE1 cleaves the voltage-gated sodium channel β2-subunit; this cleavage releases the β2 intracellular domain, which increases Nav1.1 α-subunit mRNA and protein; however, Nav1.1 is retained intracellularly, reducing cell-surface sodium current densities in neuroblastoma cells and hippocampal neurons from BACE1-transgenic mice. |
BACE1 transgenic mice, neuroblastoma cell overexpression, sodium current electrophysiology, cell-surface Nav expression analysis, mRNA quantification |
Nature cell biology |
High |
17576410
|
| 2008 |
BACE1-dependent NRG1 processing is required for normal myelination of central and peripheral axons; BACE1-null mice exhibit schizophrenia-like behavioral phenotypes including deficits in prepulse inhibition and altered ErbB4-PSD95 binding, suggesting BACE1-dependent NRG1/ErbB4 signaling regulates synaptic function. |
BACE1 knockout mice behavioral analysis (prepulse inhibition, hyperactivity, MK-801 sensitivity), co-immunoprecipitation of ErbB4-PSD95, hippocampal spine density analysis, antipsychotic drug treatment |
Proceedings of the National Academy of Sciences |
High |
18385378
|
| 2008 |
Aβ42 (but not Aβ40) activates BACE1 promoter transactivation via an NF-κB-dependent pathway; this effect requires overexpressed or Swedish-mutant APP generating excess Aβ; presenilin deficiency lowers BACE1 maturation and promoter activity; AICD does not modulate BACE1 activity. |
BACE1 promoter-reporter constructs, transfection of wild-type and Swedish APP mutant, exogenous Aβ42 application, IκB kinase inhibitor (BMS345541), presenilin-deficient fibroblasts, NF-κB-response-element deletion mutants |
The Journal of biological chemistry |
High |
18263584
|
| 2008 |
APP and BACE1 come into close proximity intracellularly (not primarily at the cell surface); cholesterol level alterations affect BACE proximity and APP cleavage, consistent with cholesterol modulating membrane fluidity and intracellular APP/BACE proximity. |
Time-resolved FRET combined with total internal reflection microscopy (TIRET), sAPP secretion assays with cholesterol manipulation |
Biochemical and biophysical research communications |
Medium |
18374657
|
| 2009 |
Mutant presenilin 1 (PS1) increases BACE1 expression and activity; this upregulation requires γ-secretase cleavage of APP and is mediated by Aβ42 (not AICD); BACE1 elevation is confirmed in PS1 mutant knock-in mice and FAD cortex. |
PS1 mutant transfection (transient and stable), PS1 knock-in mice, AD brain tissue analysis, γ-secretase inhibitor treatment, Aβ42 manipulation |
The Journal of biological chemistry |
High |
19196715
|
| 2009 |
Quantitative proteomics identifies 68 putative BACE1 substrates in human epithelial cells, the vast majority being type I transmembrane proteins; BACE1 functions as a broad sheddase with no consistent cleavage sequence motif. |
Stable isotope labeling-based quantitative proteomics (SILAC) of conditioned media from BACE1-expressing HEK cells, biochemical validation in cell culture |
PloS one |
High |
20041192
|
| 2010 |
BACE1 ubiquitination at K501 (primarily monoubiquitination and K63-linked polyubiquitination) is required for GGA3-mediated lysosomal degradation; GGA3 regulates BACE1 levels through ubiquitin-binding (via its VHS domain) rather than exclusively through DXXLL-dileucine motif interaction. |
Site-directed mutagenesis of BACE1 K501, GGA3 domain mutations (N91A ubiquitin-binding mutant, L276A), co-IP, rescue experiments in GGA3-depleted cells, Aβ measurement |
The Journal of biological chemistry |
High |
20484053
|
| 2011 |
Sphingosine-1-phosphate (S1P) directly binds full-length BACE1 and increases its proteolytic activity; inhibition of sphingosine kinase (SphK) or knockdown of SphK/overexpression of S1P-degrading enzymes reduces BACE1 activity and Aβ production in mouse neurons. |
S1P-BACE1 direct binding assay, SphK inhibitors, RNAi knockdown of SphK, S1P-degrading enzyme overexpression, BACE1 activity assays, Aβ measurement in neurons |
The Journal of neuroscience |
High |
21543615
|
| 2011 |
BACE1 and ADAM10 cleave type I and III NRG1 at two adjacent sites (BACE1 site 8 amino acids downstream of ADAM10 site), releasing a signaling-capable N-terminal fragment that activates ErbB receptors; specific inhibition of BACE1 (but not ADAM10) impairs myelination in co-culture. |
Cleavage site mapping, BACE1 and ADAM10 specific inhibitors in co-culture myelination assay, ErbB receptor phosphorylation (Akt, ERK readouts), optimized electrophoresis |
The Journal of biological chemistry |
High |
21576249
|
| 2011 |
Aβ42 activates BACE1 gene transcription through the JNK/c-Jun signaling pathway, creating a positive feedback loop; Aβ40 has much less effect on BACE1 expression. |
Aβ42 and Aβ40 treatment of neurons, BACE1 mRNA and protein measurement, JNK pathway inhibition |
Journal of Alzheimer's disease |
Medium |
21897006
|
| 2011 |
Nitric oxide at low concentrations (<100 nM) suppresses BACE1 transcription via NO/cGMP-PKG/PGC-1α signaling; at higher concentrations (0.1-100 μM), NO causes S-nitrosylation of BACE1 which inactivates the enzyme without altering expression; H2O2 induces BACE1 transcription and activity; BACE1 is highly S-nitrosylated in normal aging brains but reduced in AD. |
NO donor/H2O2 treatment of neurons, BACE1 activity assays, S-nitrosylation detection, PKG inhibition, PGC-1α pathway analysis, Aβ measurement, brain tissue analysis |
Molecular neurodegeneration |
High |
21371311
|
| 2012 |
GSK3β (but not GSK3α) regulates BACE1 gene transcription and expression via NF-κB signaling; specific inhibition of GSK3β reduces BACE1-mediated APP cleavage and Aβ production, and reduces amyloid deposition and memory deficits in AD model mice. |
GSK3β-specific inhibitors, isoform-specific genetic manipulation, BACE1 promoter NF-κB reporter assays, Aβ and plaque measurement, memory tests in double transgenic AD mice |
The Journal of clinical investigation |
High |
23202730
|
| 2012 |
Oxidative stress increases BACE1 protein levels through activation of the PKR-eIF2α pathway; specific inhibition of PKR-eIF2α attenuates BACE1 protein levels under oxidative stress; pPKR and peIF2α levels correlate with BACE1 in AD cortices. |
H2O2-induced oxidative stress in SH-SY5Y cells, PKR/eIF2α pathway inhibitors, immunoblotting for PKR, eIF2α, BACE1 in AD brains and APP/PS1 knock-in mice |
Biochimica et biophysica acta |
High |
22306812
|
| 2012 |
BACE1 regulates the cAMP/PKA/CREB pathway independently of β-amyloid production; BACE1 interacts with adenylate cyclase via its transmembrane domain, reducing cellular cAMP levels, leading to PKA inactivation and reduced CREB phosphorylation. |
BACE1 overexpression/downregulation, co-immunoprecipitation with adenylate cyclase, transmembrane domain mutants, cAMP/PKA/CREB activity assays, BACE1 transgenic mice (lacking human Aβ) |
The Journal of neuroscience |
High |
22895721
|
| 2012 |
BACE1 is a major sheddase in the nervous system, cleaving 34 novel substrates in primary neurons identified by SPECS (secretome protein enrichment with click sugars); validated substrates include seizure-protein 6, L1, CHL1, and contactin-2, pointing to BACE1 roles in neurite outgrowth and synapse formation. |
SPECS method (metabolic glycan labeling + click chemistry biotinylation), BACE1 inhibitor-treated and BACE1 knockout mouse brains for validation, mass spectrometry |
The EMBO journal |
High |
22728825
|
| 2012 |
SUMO1 interacts with the dileucine motif of BACE1 and promotes BACE1 protein accumulation; altering SUMO1 levels affects BACE1 protein levels, APP processing and Aβ generation; BACE1 accumulation in response to Aβ or apoptosis requires SUMO1. |
Co-immunoprecipitation of SUMO1 and BACE1, gain- and loss-of-function experiments, APP processing and Aβ measurement, APPswe transgenic mouse brain analysis |
Neurobiology of aging |
Medium |
22975420
|
| 2012 |
GGA1 and GGA3 synergistically regulate BACE1 protein levels in vivo; GGA1 is a novel caspase-3 substrate depleted after TBI; GGA3 haploinsufficiency sustains elevated BACE1 and Aβ after brain injury; GGA1 and GGA3 are depleted while BACE1 is elevated in AD brains. |
GGA3 knockout mice, GGA1 siRNA silencing in neurons, traumatic brain injury mouse model, AD postmortem brain analysis, western blot, Aβ ELISA |
The Journal of neuroscience |
High |
22836275
|
| 2012 |
ATase1 and ATase2, two ER-based acetyl-CoA:lysine acetyltransferases, regulate BACE1 protein levels; pharmacological inhibition of ATase1/ATase2 down-regulates BACE1 expression and activity. |
ATase inhibitor compounds, western blot for BACE1 in neurons and glial cells, Aβ measurement, competitive and non-competitive inhibition analysis |
The Journal of biological chemistry |
Medium |
22267734
|
| 2013 |
Activity-induced convergence of APP and BACE-1 in acidic recycling endosomes occurs via clathrin-dependent endocytosis; in basal conditions APP (in Golgi-derived vesicles) and BACE-1 (in acidic recycling endosomes) are largely segregated in hippocampal neurons; neuronal activity routes APP into BACE-1-positive endosomes. |
Live imaging of dendritic vesicle dynamics in cultured hippocampal neurons, pharmacological inhibition of clathrin-dependent endocytosis, comparison of APP/BACE-1 vesicle partitioning in control vs. AD brains |
Neuron |
High |
23931995
|
| 2013 |
BACE1 directly cleaves membrane-anchored Jagged1 (Jag1); loss of BACE1 reduces Jag1 shedding, upregulating Notch signaling via juxtacrine interactions, and causing increased astrogenesis with decreased neurogenesis in hippocampi of BACE1-null mice during early development. |
BACE1 knockout mice, BACE1 overexpression in cell lines, biochemical cleavage assays for Jag1, Notch signaling readouts, BrdU/cell fate marker analysis in hippocampus |
Cell reports |
High |
23831026
|
| 2014 |
BACE1 directly cleaves human contactin-2 near its GPI membrane linker domain; BACE1 activity tightly regulates contactin-2 surface levels in CHO cells and primary neurons; contactin-2 mutation at the BACE1 cleavage site (1008MM/AA) dramatically impairs soluble contactin-2 release. |
BACE1 overexpression in CHO-contactin-2 cells, pharmacological BACE1 inhibition, cleavage site mutagenesis (MM/AA), surface biotinylation, immunofluorescence, primary neuron experiments |
Molecular neurodegeneration |
High |
24405708
|
| 2014 |
Reticulon 3 (RTN3) deficiency increases BACE1 protein levels and enhances BACE1-mediated APP processing at the β-secretase site; RTN3 normally interacts with BACE1 and negatively regulates BACE1 activity; RTN3-null mice in Alzheimer's background show facilitated amyloid deposition. |
RTN3 knockout mice, biochemical analysis of BACE1 levels and activity, APP β-secretase cleavage product measurement, Alzheimer's model crosses |
The Journal of neuroscience |
High |
25319692
|
| 2015 |
APP and BACE-1 interact in both biosynthetic and endocytic compartments, particularly along recycling microdomains such as dendritic spines and presynaptic boutons; APP and BACE-1 are cotransported along axons; the Alzheimer's disease-protective 'Icelandic' APP mutation greatly attenuates APP-BACE-1 interactions. |
Fluorescence complementation assay for in cellulo APP-BACE-1 interactions, live imaging, internalized APP fate tracking in hippocampal neurons |
Nature neuroscience |
High |
26642089
|
| 2015 |
BACE1 and ADAM10 are enriched in synaptic vesicles isolated from rat brain; ADAM10 activity is also detectable in synaptic vesicles along with enriched APP-CTFs, indicating that initial APP cleavage occurs at the synapse in synaptic vesicles. |
Controlled-pore glass chromatography for synaptic vesicle isolation, western blotting, in situ proximity ligation assay for ADAM10/BACE1 colocalization with synaptophysin in primary hippocampal neurons |
Journal of neurochemistry |
Medium |
26296617
|
| 2015 |
BACE1 deletion impairs sciatic nerve remyelination; both axonal and Schwann cell BACE1 are equally required for optimal remyelination; nerve injury induces BACE1 transcription in Schwann cells; abolished Nrg1 (type I) cleavage in BACE1-null Schwann cells contributes to impaired remyelination. |
Nerve segment transplant/swap experiments between BACE1-null and wild-type mice, BACE1 transcription analysis in Schwann cells, Nrg1 isoform cleavage analysis |
The Journal of neuroscience |
High |
25740511
|
| 2015 |
sAPPα is a potent endogenous inhibitor of BACE1, likely acting via an allosteric mechanism; sAPPβ (which lacks 16 C-terminal amino acids) adopts a different structure and does not inhibit BACE1. |
In vitro BACE1 inhibition assays with sAPPα and sAPPβ, small-angle X-ray scattering for structural analysis, inhibition kinetics analysis |
Journal of Alzheimer's disease |
High |
26401691
|
| 2016 |
Autophagy-lysosomal pathway regulates BACE1 trafficking and degradation; induction of autophagy enhances BACE1 turnover dependent on lysosomal activity; BACE1 co-migrates with autophagic vacuoles along axons; in APP mutant transgenic neurons, autophagic vacuole-associated BACE1 accumulates in distal axons, increasing local APP β-cleavage; Snapin-enhanced retrograde transport facilitates BACE1 delivery to lysosomes. |
Autophagy induction/inhibition, live imaging of BACE1-autophagic vacuole co-migration in axons, BACE1 degradation assays, APP transgenic mouse model analysis, Snapin overexpression |
The Journal of biological chemistry |
High |
28028177
|
| 2017 |
GGA1 mediates signal-dependent sorting of BACE1 from early to recycling endosomes; phosphorylation of S498 within the DISLL motif of BACE1 cytoplasmic tail by JNK enhances exit from early endosomes via GGA1 and retromer; the phosphomimetic S498D mutant shows faster recycling and reduced Aβ production compared to non-phosphorylatable S498A. |
BACE1 S498D/S498A phosphomimetic mutants, siRNA knockdown of SNX4, GGA1, retromer components, endosomal trafficking assays, Aβ production measurement, primary neuron experiments |
Molecular biology of the cell |
High |
29142073
|
| 2017 |
p75 neurotrophin receptor interacts with BACE1; this interaction is enhanced by Aβ; p75 and Aβ together increase colocalization of BACE1 and APP in early endosomes; JNK-mediated phosphorylation of APP-Thr668 and BACE1-Ser498 in the presence of Aβ and p75 may drive this endosomal localization. |
Co-immunoprecipitation of p75 and BACE1, immunofluorescence colocalization, phosphorylation analysis (JNK inhibitors), early endosome fractionation in cortical neurons |
Journal of neurochemistry |
Medium |
28869759
|
| 2019 |
BACE1-AS (antisense lncRNA) functions as a competing endogenous RNA (ceRNA) by sequestering BACE1-targeting miRNAs, preventing BACE1 mRNA degradation; BACE1-AS knockdown increases BACE1-targeting miRNAs and reduces BACE1 expression. |
BACE1-AS overexpression and siRNA knockdown, miRNA level measurement, BACE1 mRNA stability assays, Aβ measurement |
Journal of chemical neuroanatomy |
Medium |
30959172
|
| 2019 |
MMP13 inhibition reduces BACE1 protein levels via PI3K signaling and eIF4B-mediated translational regulation (at eIF4B S422); this effect is independent of BACE1 gene transcription and protein degradation, and requires the BACE1 5'UTR. |
Small molecule screen with BACE1 promoter/5'UTR-luciferase reporter, eIF4B mutagenesis (S422R), BACE1 5'UTR deletion, PI3K inhibitor, hippocampal Mmp13 knockdown in APPswe/PS1E9 mice, Aβ measurement |
Brain |
High |
30596903
|
| 2020 |
AP-2 (clathrin adaptor complex-2) controls BACE1 endosomal trafficking and lysosomal delivery independently of its role in APP endocytosis; conditional AP-2 KO causes BACE1 accumulation in late endosomes and autophagosomes, increasing Aβ production; AP-2 is decreased in iPSC-derived neurons from late-onset AD patients. |
Conditional AP-2 knockout mice, iPSC-derived AD neurons, BACE1 trafficking analysis by immunofluorescence/fractionation, Aβ production measurement, BACE1 deletion rescue of synapse loss |
EMBO reports |
High |
32323475
|
| 2022 |
BACE1 deficiency in microglia (5xFAD mice) reduces amyloid plaques through enhanced Aβ clearance (phagocytosis), not through changes in APP processing; microglial BACE1 deletion enhances autophagolysosmal function and metabolic reprogramming via PI3K-mTOR-HIF-1α signaling; unlike global BACE1 deletion, microglial-specific deletion does not reduce long-term potentiation. |
Microglial-specific Bace1 conditional KO in 5xFAD mice, single-cell RNA-seq of astrocytes/microglia, plaque quantification, LTP electrophysiology, phagocytosis assays, mTOR pathway analysis |
Science advances |
High |
35857844
|
| 2023 |
BACE1 in astrocytes cleaves insulin receptors (IR); BACE1 deficiency abolishes IR cleavage and enhances expression of Clusterin (CLU) and Cxcl14, boosting Aβ uptake and degradation; astrocyte-specific Bace1 KO in 5xFAD mice attenuates cortical Aβ plaque load through enhanced clearance. |
Single-cell RNA-seq of purified astrocytes from Bace1 KO mice, astrocyte-specific conditional KO (Bace1fl/fl;Gfap-cre) in 5xFAD mice, siRNA knockdown of CLU, Aβ uptake/degradation assays, western blot for IR cleavage products |
Molecular neurodegeneration |
High |
37143090
|
| 2004 |
Human BACE forms homodimers in brain tissue stabilized by non-disulfide, non-salt-sensitive intermolecular interactions; the soluble ectodomain exists only as monomer; inactivation of the C-terminal active site (D289A mutant) does not abolish overall enzyme activity, suggesting the enzyme may act as a dimer with the N-terminal active site remaining functional. |
Biochemical analysis of human brain tissue, denaturing/non-denaturing gel analysis, active site mutagenesis (D289A), colocalization of APP and BACE in cells expressing endogenous BACE |
The Journal of biological chemistry |
Medium |
15247262
|
| 2003 |
Presenilin-1 (PS1) directly binds BACE1; PS1 preferentially binds immature BACE1 and may act as a functional regulator of BACE1 maturation or activity; interaction confirmed by Co-IP and colocalization in human cultured cells. |
Yeast two-hybrid, co-immunoprecipitation, colocalization in human cultured cells |
Neurobiology of disease |
Medium |
12901838
|
| 2012 |
Sorting nexin 12 (SNX12) interacts with BACE1 and regulates its endocytosis; SNX12 downregulation accelerates BACE1 endocytosis and decreases cell surface BACE1, increasing BACE1-mediated APP processing and Aβ generation without affecting in vitro β-secretase activity. |
Co-immunoprecipitation of SNX12 and BACE1, SNX12 overexpression/knockdown, cell surface BACE1 measurement, Aβ/sAPPβ/APP-CTF quantification, γ-secretase activity assay |
Molecular neurodegeneration |
Medium |
22709416
|