| 2007 |
AFAP1L2/XB130 is a novel adaptor protein that interacts with c-Src tyrosine kinase; co-expression in COS-7 cells results in activation of c-Src and elevated tyrosine phosphorylation of multiple proteins including XB130 itself. XB130 contains SH2- and SH3-binding motifs, two pleckstrin homology domains, and a coiled-coil region. Down-regulation with siRNA reduced c-Src activity, IL-8 production, EGF-induced phosphorylation of Akt and GSK3β in human lung epithelial cells. |
Co-immunoprecipitation, co-expression assays, siRNA knockdown, Western blot |
The Journal of biological chemistry |
High |
17412687
|
| 2008 |
AFAP1L2/XB130 is phosphorylated by RET/PTC tyrosine kinase at tyrosine 54, which creates a critical binding site for the SH2 domains of the p85α subunit of PI3-kinase; this links RET/PTC signaling to PI3K/Akt activation in thyroid cancer cells. Downregulation of XB130 strongly reduced Akt activity without altering ERK1/2 phosphorylation. |
Phosphorylation site mutagenesis (Y54 mutant), Co-immunoprecipitation, siRNA knockdown, Western blot |
Oncogene |
High |
19060924
|
| 2010 |
AFAP1L2/XB130 localizes to lamellipodial F-actin meshwork in response to EGF, wounding, and constitutively active Rac. Structure-function analysis showed N-terminus (167 aa) and C-terminus (63 aa) are required for translocation; PH domains and Src-targeted tyrosines are dispensable. Silencing XB130 decreased wound closure rate, inhibited Matrigel invasion, reduced lamellipodial persistence, and slowed spreading in TPC1 cells. |
Live imaging, immunofluorescence, structure-function mutant analysis, siRNA knockdown, wound healing assay, Matrigel invasion assay |
Journal of cell science |
High |
21084565
|
| 2010 |
AFAP1L2/XB130 knockdown in WRO thyroid cancer cells inhibited G1-S phase progression, induced spontaneous apoptosis, and enhanced apoptotic stimulus-induced cell death; tumor growth in nude mice was significantly reduced. Microarray identified 246 genes changed, including 57 related to cell proliferation/survival. |
siRNA/shRNA knockdown, flow cytometry, xenograft mouse model, microarray |
The American journal of pathology |
High |
21224076
|
| 2012 |
AFAP1L2/XB130 (PI3KAP) is induced by cAMP in FRTL-5 thyroid cells, associates with c-Src, becomes tyrosine phosphorylated by Src family kinases, and binds p85 PI3K; this interaction is required for cAMP-dependent potentiation of IGF-I-induced DNA synthesis. Y72F mutant (unable to bind p85 PI3K) failed to enhance IGF-I-induced DNA synthesis. |
MALDI-TOF MS protein identification, Co-immunoprecipitation, site-directed mutagenesis (Y72F), Src family kinase inhibitors (PP1/PP2), knockdown, DNA synthesis assay |
Molecular endocrinology |
High |
22496359
|
| 2012 |
AFAP1L2/XB130 regulates cancer cell proliferation and survival through PI3K/Akt downstream signals including p21Cip1/WAF1, p27Kip1, FOXO3a, and GSK3β phosphorylation independently of RET/PTC. XB130 can be phosphorylated by multiple protein tyrosine kinases. |
siRNA knockdown, Western blot, flow cytometry, apoptosis assays in WRO and A549 cells |
PloS one |
Medium |
22928011
|
| 2013 |
AFAP1L2/XB130 suppresses tumor-suppressive miRNAs (miR-33a, miR-149, miR-193a-3p) in thyroid cancer cells; these miRNAs target oncogenes MYC, FOSL1, and SLC7A5 respectively to reduce cell growth. |
miRNA array, qRT-PCR, ectopic overexpression, miRNA mimic transfection, dual-luciferase reporter assay for 3'UTR targeting |
PloS one |
Medium |
23527086
|
| 2015 |
AFAP1L2/XB130 interacts with scaffold protein Tks5 via the fifth SH3 domain of Tks5 binding to polyproline-rich motifs in the N-terminus of XB130; this complex also includes Src tyrosine kinase. Disruption of XB130/Tks5 binding (via W1108A mutant of Tks5 SH3 domain or XB130 N-terminal deletion) reduces cell proliferation, Src activation, and downstream PI3K/Akt phosphorylation. |
Yeast two-hybrid screening, Co-immunoprecipitation, structure-function mutagenesis, cell proliferation and apoptosis assays |
Molecular biology of the cell |
High |
26446840
|
| 2015 |
AFAP1L2/XB130 translocates to lamellipodia and microfilamentous structures in response to NNK stimulation; overexpression enhances NNK-induced migration requiring both N- and C-termini of XB130. XB130 overexpression enhanced NNK-induced protein tyrosine phosphorylation and promoted MMP-14 translocation to cell motility-associated structures. |
Immunofluorescence, overexpression with truncation mutants, migration assay, Western blot |
Oncotarget |
Medium |
25980441
|
| 2016 |
AFAP1L2/XB130 (PI3KAP) directly binds F-actin via its C-terminal region (residues 830-840) and forms multimers via its N-terminal 40 amino acids; both actin-binding and multimerization are required for actin crosslinking activity in vitro. Overexpression of XB130 enhanced endocytosis (dextran uptake), while the actin-binding deletion mutant did not. |
In vitro actin-crosslinking assay, Blue native-PAGE, Co-immunoprecipitation, deletion mutant analysis, endocytosis assay |
Frontiers in endocrinology |
High |
27462298
|
| 2016 |
Upon EGF, PKC activator, or nicotinic acetylcholine receptor ligand stimulation, AFAP1L2/XB130 and Tks5 dissociate and translocate separately to the cell membrane; XB130 colocalizes with lamellipodial marker WAVE2 and interacts with Rac1, while Tks5 colocalizes with podosome marker N-WASP and interacts with Cdc42. Co-expression of both XB130 and Tks5 inhibits cell migration, while expression of either alone promotes it. |
Co-immunoprecipitation, immunofluorescence, overexpression/co-expression, migration assays, Rho GTPase activity assay |
Oncotarget |
Medium |
27835612
|
| 2019 |
PTPRZ dephosphorylates AFAP1L2 at tyrosine residues in vitro and in HEK293T cells; PTN-mediated inhibition of PTPRZ increases AFAP1L2 tyrosine phosphorylation, which activates the PI3K-AKT-mTOR pathway to promote oligodendrocyte precursor cell differentiation. Knockdown of AFAP1L2 suppressed OPC differentiation and PTN-induced AKT/mTOR phosphorylation. |
In vitro phosphatase assay, HEK293T cell phosphorylation assay, siRNA knockdown, knock-in mouse (catalytically inactive PTPRZ C→S mutation), immunofluorescence, PI3K inhibitor treatment |
Glia |
High |
30667096
|
| 2021 |
AFAP1L2/XB130 is expressed on the apical membrane of thyrocytes and regulates thyrocyte polarization by linking the actin filament cortex to the microtubule network; XB130-deficient thyrocytes show delayed folliculogenesis, reduced recruitment of MT-associated proteins, and disorganized acetylated tubulin under the apical membrane. |
XB130-GFP transfection, immunofluorescence confocal microscopy, 3D Matrigel culture, XB130 knockout mouse thyrocytes |
Thyroid |
Medium |
34652970
|
| 2021 |
XB130 deficiency in mice causes congenital hypothyroidism due to disorganized apical membrane structure and function of thyrocytes, with diminished thyroglobulin iodination and release. XB130 is localized mainly on the apical membrane of thyroid follicles. |
XB130 knockout mouse model, immunohistochemistry, immunofluorescence, Western blot, qRT-PCR, thyroxine rescue experiment |
Thyroid |
High |
34470464
|
| 2023 |
AFAP1L2 promotes sorafenib resistance in HCC by activating SRC, which phosphorylates FUNDC1, thereby blocking FUNDC1 recruitment of LC3B to mitochondria and inhibiting mitophagy. Artesunate reduces AFAP1L2 protein expression, suppresses SRC and FUNDC1 phosphorylation, and reactivates mitophagy. |
Co-immunoprecipitation, CETSA (cellular thermal shift assay), surface plasmon resonance, shRNA knockdown, Western blot, TEM, in vitro and in vivo models |
Autophagy |
High |
37733919
|
| 2017 |
The AFAP1L2/RET fusion oncogene (chromosomal rearrangement placing AFAP1L2 5' sequences upstream of RET kinase domain) has transforming ability confirmed by activation of the MAPK pathway in thyroid carcinoma. |
5' RACE identification, functional transformation assay, MAPK pathway activation analysis |
Thyroid |
Medium |
28351223
|
| 2022 |
AFAP1L2/XB130 contributes to trastuzumab resistance in HER2+ gastric cancer by binding to PI3K p85α (facilitated by p-SRC Tyr416), activating PI3K/AKT; additionally, XB130 negatively regulates PTEN gene transcription, forming a positive feedback loop (SRC-XB130-PTEN). |
Co-immunoprecipitation, Western blot, siRNA knockdown, qRT-PCR, xenograft mouse model, CCK8 assay |
Clinical & translational oncology |
Medium |
36284062
|
| 2024 |
AFAP1L2/XB130 interacts with Src on TiO2 nanotube surfaces to activate the downstream PI3K/Akt/GSK-3β/β-catenin pathway, mediating mechanotransduction and osteogenic differentiation; filamentous actin depolymerization changes XB130 expression and distribution, affecting osteogenesis. |
Co-immunoprecipitation, Western blot, siRNA knockdown, overexpression, in vitro and in vivo osteogenesis assays, immunofluorescence |
Acta biomaterialia |
Medium |
38360291
|
| 2025 |
hnRNPC binds specific regions within the 3'UTR of AFAP1L2/XB130 mRNA, enhancing its stability by inhibiting recruitment of nucleases XRN1 and DIS3L2, and simultaneously interacts with eIF4E to facilitate mRNA circularization and increase translation efficiency, thereby upregulating XB130 expression and activating PI3K/Akt signaling in NSCLC. |
RNA pull-down assay, RNA immunoprecipitation, dual-luciferase reporter assay, Co-immunoprecipitation, qRT-PCR, Western blot |
Cancer cell international |
Medium |
39800708
|
| 2015 |
AFAP1L2/XB130 promotes bronchioalveolar stem cell (BASC) and Club cell proliferation during airway epithelial repair through the PI3K/Akt/GSK-3β pathway; XB130 KO mice show significantly delayed small airway repair with fewer Club cells, fewer proliferative epithelial cells, and reduced BASC expansion, with reduced phosphorylation of Akt, GSK-3β, and p85α PI3K at day 7 post-injury. |
XB130 knockout mouse model, naphthalene-induced injury, immunohistochemistry, Western blot, microarray, CCSP mRNA qRT-PCR |
Oncotarget |
Medium |
26360608
|