| 2001 |
Missense mutations in SH3BP2 (mapping to exon 9, residues 415-420) cause cherubism, identifying SH3BP2 as the causative gene for this bone resorption disorder. |
Direct sequencing of SH3BP2 in affected families; identification of seven distinct mutations |
Nature genetics |
High |
11381256
|
| 2002 |
14-3-3 chaperone proteins physically interact with SH3BP2 (3BP2) in a phosphorylation-dependent manner; PKC-mediated phosphorylation of Ser225 and Ser277 within proline-rich domains (residues 201-240 and 270-310) is required for 14-3-3 binding, and this interaction negatively regulates SH3BP2 adapter function (NFAT transcriptional activity) in lymphocytes. |
Yeast two-hybrid, co-immunoprecipitation, alkaline phosphatase dephosphorylation assay, in vitro PKC kinase assay, deletion mutant mapping, NFAT-reporter assay |
The Journal of biological chemistry |
High |
12501243
|
| 2006 |
Cherubism-associated SH3BP2 mutations (R415Q, P418R, D419N, D420E) are gain-of-function mutations that increase NFAT transcriptional activity when transiently expressed in cells. |
Transient transfection of mutant SH3BP2 constructs with NFAT-luciferase reporter assay |
Human mutation |
Medium |
16786512
|
| 2007 |
Cherubism knock-in mice (P416R Sh3bp2) exhibit TNF-α-dependent systemic inflammation and bone loss driven by myeloid cells; mutant myeloid cells show increased ERK1/2 and SYK phosphorylation in response to M-CSF and RANKL, forming large osteoclasts with high TNF-α expression. The phenotype is lymphocyte-independent and transferable via mutant fetal liver cells, establishing SH3BP2 gain-of-function in myeloid cells as the mechanism. |
Knock-in mouse model, fetal liver cell transfer, bone marrow transplantation, ERK/SYK western blot, RANKL/M-CSF stimulation assays, TNF-α measurement |
Cell |
High |
17218256
|
| 2008 |
SH3BP2 overexpression in RAW 264.7 preosteoclast cells increases NFATc1 nuclear translocation and TRAP expression in response to sRANKL, and potentiates PLCγ1 and PLCγ2 phosphorylation, providing a mechanistic pathway linking SH3BP2 to osteoclastogenesis via PLCγ→calcineurin→NFATc1. |
Overexpression in RAW264.7 cells, western blot for PLCγ phosphorylation, TRAP staining, NFATc1 nuclear localization assay |
Biochemical and biophysical research communications |
Medium |
18440306
|
| 2010 |
Cherubism-associated mutant SH3BP2 (compared to wild-type) potentiates RANKL-induced PLCγ1 and PLCγ2 phosphorylation, leading to greater NFAT activation and osteoclast differentiation (TRAP expression) in RAW264.7 cells, confirming gain-of-function mechanism through the PLCγ→NFATc1 axis. |
Transient transfection of wild-type vs mutant SH3BP2, NFAT-luciferase reporter, TRAP staining, western blot for PLCγ phosphorylation |
Journal of orthopaedic research |
Medium |
20872577
|
| 2010 |
The P416R cherubism mutation in Sh3bp2 knock-in mice impairs osteoblast differentiation and function: homozygous mutant osteoblast cultures show decreased alkaline phosphatase expression, reduced mineralization, and decreased expression of osteoblast markers (Col1a1, ALP, osteocalcin). Mutant osteoblasts also increase osteoclastogenesis in co-culture with bone marrow macrophages. |
Knock-in mouse calvarial osteoblast cultures, GFP-Col1a1 transgene reporter, FTIRI bone mineral analysis, co-culture assay, gene expression analysis |
Bone |
Medium |
20117257 20691350
|
| 2011 |
shRNA knockdown of SH3BP2 in RAW264.7 and bone marrow macrophages (BMMs) decreases PLCγ2 phosphorylation, NFATc1 expression, osteoclast-specific gene expression, and reduces osteoclast number, size, and bone resorptive activity; Sh3bp2-/- BMMs similarly form smaller, less active osteoclasts, establishing SH3BP2 as a positive regulator of osteoclast differentiation and function. |
shRNA knockdown, Sh3bp2-/- mouse BMM cultures, western blot for PLCγ2/NFATc1, TRAP staining, bone resorption assay |
Journal of orthopaedic research |
High |
21448930
|
| 2011 |
Tankyrase (PARP5) interaction with SH3BP2 is disrupted by cherubism mutations, leading to SH3BP2 stabilization (loss of tankyrase-mediated degradation); this mechanism was highlighted as central to understanding why cherubism mutations cause protein accumulation. |
Review/commentary citing two Cell papers (Guettler et al. and Levaot et al.) — mechanistic evidence from referenced primary studies |
Cell |
Medium |
22153068
|
| 2012 |
PARP1 binds to the SH3BP2 promoter at a specific site (−44 to −21) and is essential for SH3BP2 transcriptional expression; PARP1 knockout in mice reduces SH3BP2 expression in BMMs. |
Streptavidin-biotin purification, EMSA, ChIP assay, promoter deletion analysis, mutagenesis of PARP1 binding site, Parp1 knockout mouse BMMs |
Biochemical and biophysical research communications |
High |
22820184
|
| 2014 |
The P416R cherubism mutation in SH3BP2 enables TNF-α to drive RANKL-independent osteoclastogenesis in BMMs via SYK and PLCγ2 phosphorylation leading to increased NFATc1 nuclear translocation; heterozygous mutant mice show exacerbated bone loss in TNF-α calvarial injection and hTNFtg models. SH3BP2 knockdown in RAW264.7 cells reduces TNF-α-induced osteoclast formation. |
Knock-in mouse BMM cultures, western blot for SYK/PLCγ2, NFATc1 nuclear localization, calvarial TNF-α injection model, hTNFtg mouse model, shRNA knockdown |
Journal of bone and mineral research |
High |
24916406
|
| 2014 |
SH3BP2 gain-of-function (P416R) augments inflammation and bone loss in collagen-induced arthritis through increased macrophage TNF-α production and enhanced RANKL-induced osteoclastogenesis with increased NFATc1 nuclear localization; lymphocyte responses (proliferation, IFN-γ, IL-17, anti-CII antibodies) were not significantly different between wild-type and mutant mice. |
CIA mouse model, paw swelling assessment, micro-CT, histology, cytokine gene expression, BMM culture for TNF-α and osteoclastogenesis, NFATc1 nuclear localization, lymph node cell culture |
PloS one |
High |
25144740
|
| 2019 |
Tankyrase (PARP5) catalyzes ADP-ribosylation of SH3BP2, targeting it for degradation; pharmacological tankyrase inhibition in mice stabilizes SH3BP2 leading to increased osteoclast formation and bone loss, establishing tankyrase as a negative regulator of SH3BP2 protein levels and osteoclastogenesis. |
Tankyrase inhibitor treatment in mice, micro-CT bone analysis, osteoclast formation assays — reviewed mechanistic data from primary studies |
Cells |
Medium |
30813388
|
| 2019 |
SH3BP2 functions through a SH3BP2-SYK signaling axis to regulate the bone-resorbing function (not differentiation) of osteoclasts in periodontitis; conditional knockout of SH3BP2 and SYK in myeloid cells (LysM-Cre) reduces alveolar bone loss without affecting inflammatory cytokine expression or osteoclast induction. |
Sh3bp2-/- mice, conditional myeloid knockout (LysM-Cre), ligature-induced periodontitis model, micro-CT, SYK inhibitor (GS-9973), in vitro mineral resorption assay |
Journal of bone and mineral research |
High |
31613396
|
| 2018 |
SH3BP2 silencing in GIST cell lines downregulates oncogenic KIT and PDGFRA expression and reduces microphthalmia-associated transcription factor (MITF) levels; reconstitution of both SH3BP2 and MITF rescues cell viability, placing SH3BP2 upstream of MITF in regulating KIT/PDGFRA expression in GISTs. |
shRNA silencing in GIST cell lines, western blot, overexpression rescue experiment, in vivo xenograft tumor growth assay, migration assay |
Molecular oncology |
Medium |
29885053
|
| 2020 |
SH3BP2 gain-of-function (homozygous P416R) drives RANKL-independent osteoclastogenesis in vivo; Sh3bp2 knock-in mice develop TRAP-positive, cathepsin K-positive multinucleated osteoclasts spontaneously even in the absence of RANKL (Rankl-/- background), with elevated serum TNF-α as the likely driver. |
Sh3bp2 KI × Rankl-/- double mutant mouse model, TRAP staining, cathepsin K staining, micro-CT bone analysis, osteoclast marker gene expression, serum TRAP5b and TNF-α measurement |
Bone reports |
High |
32258251
|
| 2021 |
SH3BP2 deficiency suppresses dendritic cell differentiation in vitro and reduces the number of dendritic cells in spleens of lupus-prone mice; B cell-specific SH3BP2 deficiency does not rescue lupus phenotypes, indicating the relevant SH3BP2 function in lupus is not B cell-intrinsic. |
SH3BP2-deficient mouse on Fas lupus background, flow cytometry of lymphocyte subsets, B cell-specific conditional KO, in vitro dendritic cell differentiation assay |
International journal of molecular sciences |
Medium |
33920631
|
| 2024 |
SH3BP2 forms a signalosome complex with PLCγ2 and VAV2 (Rho-GEF) in human podocytes, as shown by co-immunoprecipitation; downstream signaling through MyD88, TRIF, and NFATc1 is upregulated in SH3BP2-associated nephrotic syndrome. |
Co-immunoprecipitation of SH3BP2 with PLCγ2 and VAV2 in human podocytes, Sh3bp2 KI/KI transgenic mouse model (albuminuria measurement) |
JCI insight |
Medium |
38127456
|
| 2024 |
SH3BP2 silencing inhibits microglia activation and neuroinflammation via the JAK/STAT signaling pathway; silencing decreases phosphorylation of JAK and STAT in LPS-stimulated microglia and improves neurological outcomes in spinal cord injury rat models. |
Lentiviral shSH3BP2 injection in SCI rat model, LPS-stimulated BV2 and primary microglia, western blot for p-JAK/p-STAT, qRT-PCR, immunofluorescence, behavioral assays |
Inflammation |
Medium |
39546158
|
| 2021 |
TLR2/4-mediated inflammation in the jaw triggers cherubism-like bone expansion specifically in Sh3bp2 gain-of-function mice; ablation of Tlr2/4 signaling or neutrophil depletion (anti-Ly6G) ameliorates jawbone expansion, placing SH3BP2 gain-of-function downstream of pathogen-associated molecular pattern (PAMP)-induced TLR signaling in jawbone lesion development. |
Sh3bp2 KI mouse pulp exposure model, Tlr2/4 knockout genetic epistasis, anti-Ly6G neutrophil depletion, histology, cytokine expression, micro-CT |
JBMR plus |
Medium |
35079675
|