| 1986 |
Human basic FGF (FGF2) was cloned from multiple human cDNA libraries; nucleotide sequencing revealed a single FGF2 gene encoding a protein with 99% homology to bovine bFGF and lacking a classical signal peptide sequence, suggesting unconventional secretion and intracellular storage. |
cDNA cloning, genomic Southern blot, sequence analysis |
The EMBO journal |
High |
3780670
|
| 1989 |
The human FGF2 gene encodes four polypeptides (17.8, 22.5, 23.1, and 24.2 kDa); the 17.8-kDa form initiates at an AUG codon, while the three higher-molecular-weight forms initiate translation at upstream non-AUG (CUG) codons within the same open reading frame. |
In vitro transcription/translation, site-directed mutagenesis of start codons, cell transfection, SDS-PAGE |
Proceedings of the National Academy of Sciences of the United States of America |
High |
2538817 2726761
|
| 1989 |
High-molecular-weight forms of FGF2 (22.5 and 21 kDa) are initiated by CUG start codons upstream of the canonical AUG, and these HMW forms are as biologically active as the 18-kDa form when expressed in COS cells. |
In vitro mutagenesis, COS cell transfection, biological activity assay |
Proceedings of the National Academy of Sciences of the United States of America |
High |
2538817
|
| 1991 |
The three-dimensional crystal structure of human basic FGF2 was determined, revealing a fold of 12 antiparallel beta-strands with approximate threefold internal symmetry, topologically similar to interleukin-1β; structural locations of heparin- and receptor-binding sequences were identified. |
X-ray crystallography |
Science (New York, N.Y.) |
High |
1702556
|
| 1990 |
FGF2 binds with high affinity (Kd ~2–15 × 10⁻¹¹ M) to two distinct receptor tyrosine kinases (flg/FGFR1 and bek/FGFR2), each containing three extracellular immunoglobulin-like domains and an intracellular tyrosine kinase domain. |
cDNA cloning, NIH 3T3 cell transfection, direct radiolabeled ligand-binding and Scatchard analysis |
The EMBO journal |
High |
1697263
|
| 1996 |
FGF2 activates FGFR1c, FGFR2b, FGFR2c, FGFR3c, and FGFR4 with differential mitogenic potency; receptor specificity across the FGF family is determined by both the ligand and the alternatively spliced D3 domain of the receptor. |
Engineered BaF3 cell lines expressing individual FGFR splice variants, mitogenic proliferation assays with all nine known FGFs |
The Journal of biological chemistry |
High |
8663044
|
| 1996 |
FGFR1 autophosphorylates on seven tyrosines upon FGF2-induced activation; phosphorylation of Y653 and Y654 is essential for kinase activation and downstream biological responses (MAPK activation, mitogenesis, neuronal differentiation), whereas phosphorylation of Y463, Y583, Y585, and Y730 is dispensable for these responses. |
Site-directed mutagenesis of each tyrosine, immune-complex kinase assays, MAPK activation assays, PC12 differentiation assays |
Molecular and cellular biology |
High |
8622701
|
| 1997 |
Crystal structures of the FGFR1 tyrosine kinase domain bound to two oxindole inhibitors revealed the ATP-binding site and showed that more specific inhibitors induce a conformational change in the nucleotide-binding loop; these structures defined the structural basis for selective FGFR1 inhibition. |
X-ray crystallography of FGFR1 kinase domain–inhibitor complexes |
Science (New York, N.Y.) |
High |
9139660
|
| 1999 |
The crystal structure of FGF2 bound to FGFR1 (D2–D3) at 2.8 Å resolution revealed that two FGF2:FGFR1 complexes dimerize through FGF2–D2 trans-contacts and a direct D2–D2 receptor interaction, with a positively charged canyon identified as the heparin-binding site. |
X-ray crystallography of FGF2–FGFR1 binary complex |
Cell |
High |
10490103
|
| 2000 |
Crystal structure of a 2:2:2 FGF:FGFR:heparin ternary complex at 3 Å revealed that heparin plays a dual role: augmenting FGF–FGFR binding within each 1:1 complex and bridging FGFR dimerization across complexes via its 6-O-sulfate groups. |
X-ray crystallography of ternary FGF–FGFR–heparin complex |
Molecular cell |
High |
11030354
|
| 2000 |
Crystal structures of FGF1–FGFR1 and FGF2–FGFR2 complexes identified a conserved FGF–D2 and FGF–linker binding interface common to all FGF–FGFR pairs, while specificity is determined by interactions between the N-terminal/central FGF regions and alternatively spliced loop regions in D3. |
X-ray crystallography of two FGF–FGFR binary complexes |
Cell |
High |
10830168
|
| 1998 |
FGF2 knockout mice (lacking all three isoforms) are viable but exhibit significant reduction in neocortical neuron density (particularly layer V motor cortex) and delayed excisional skin wound healing, demonstrating non-redundant in vivo roles for FGF2 in cortical neurogenesis and wound repair. |
Homologous recombination knockout in ES cells, histology, immunohistochemistry, wound-healing assays in vivo |
Proceedings of the National Academy of Sciences of the United States of America |
High |
9576942
|
| 2000 |
Fgf2 knockout mice show a 50% reduction in founder cells of the dorsal pseudostratified ventricular epithelium (cerebral cortical anlage) and a 45% decrease in cortical neuron number by end of neurogenesis, with selective loss of large deep-layer neurons, demonstrating FGF2 is required for progenitor expansion and generation of a specific cortical neuron class. |
Fgf2 germline knockout mice, volumetric analysis, cell counting, TUNEL apoptosis assay, in situ hybridization |
The Journal of neuroscience |
High |
10864959
|
| 2008 |
FGF2 secretion is unconventional (ER/Golgi-independent) and depends on active caspase-1; although FGF2 is not a caspase-1 substrate, it physically interacts with caspase-1, linking inflammation-induced caspase-1 activation to FGF2 export. |
Secretome iTRAQ proteomics, co-immunoprecipitation, caspase-1 activity assays, brefeldin-A insensitivity controls |
Cell |
High |
18329368
|
| 2009 |
High-molecular-weight FGF2 isoforms (initiated from CUG codons) are retained in the nucleus and act independently of cell-surface FGF receptors, while the 18-kDa LMW isoform is secreted and acts through receptor tyrosine kinases; the two classes have distinct intracellular trafficking. |
Isoform-specific expression constructs, immunofluorescence/fractionation, FGFR inhibition studies (review consolidating experimental data) |
Cellular and molecular life sciences : CMLS |
Medium |
18850066
|
| 2018 |
Individual FGF2 membrane translocation events were directly visualized using live-cell TIRF microscopy; translocation required PI(4,5)P2-mediated recruitment at the inner leaflet and heparan sulfate capture at the outer leaflet, had an average duration of ~200 ms, and involved FGF2 dimers as the predominant oligomeric species at the inner leaflet, consistent with dimer-seeded higher oligomers forming membrane pores as translocation intermediates. |
Live-cell TIRF microscopy, single-molecule imaging, simultaneous dual-channel imaging of inner- and outer-leaflet FGF2, pharmacological/genetic manipulation of PI(4,5)P2 and heparan sulfate |
The Journal of cell biology |
High |
30470711
|
| 2020 |
Nuclear FGF2 (18 kDa isoform) physically interacts with API5; the crystal structure of the API5–FGF2 complex identified critical interface residues and revealed a cryptic nuclear localization sequence in FGF2 explaining its nuclear import without a canonical NLS. This complex regulates mRNA nuclear export through both the TREX complex and the eIF4E/LRPPRC pathway, controlling bulk mRNA and specific mRNAs (c-MYC, cyclin D1). |
X-ray crystallography of API5–FGF2 complex, site-directed mutagenesis, co-immunoprecipitation, mRNA export assays, eIF4E sensitivity element reporter assays |
Nucleic acids research |
High |
32383752
|
| 2004 |
FGF2 induces G1 growth arrest in RCS chondrocytes by activating the Ras/ERK pathway; at the molecular level, FGF2 causes disintegration of the cyclin D3–CDK6 complex, increased association of p21(WAF1) and p27(Kip1) with cyclin–CDK2 and cyclin–CDK4 complexes, and underphosphorylation of p107/p130 pocket proteins, leading to cell cycle arrest. |
Chemical inhibition of FGFR3 and MEK1/2, dominant-negative and constitutively active Ras expression, cyclin–CDK co-immunoprecipitation, Western blot for cell-cycle regulators |
Experimental cell research |
High |
15194433
|
| 2007 |
FGF2 triggers PDGFR-α and PDGFR-β expression at the transcriptional level in endothelial cells, enabling them to respond to PDGF-BB; reciprocally, PDGF-BB upregulates FGFR1 promoter activity in vascular smooth muscle cells, creating a reciprocal signaling loop that drives disorganized tumor neovascularization and metastasis. |
Simultaneous tumor cell overexpression of PDGF-BB and FGF2, FGFR1 promoter reporter assays, in vivo fibrosarcoma models, quantitative vessel and pericyte analysis |
The Journal of clinical investigation |
High |
17909625
|
| 2004 |
FGF2 activates RUNX2 via the MEK/ERK pathway (resulting in ~2-fold increased RUNX2 phosphorylation) in articular chondrocytes; activated RUNX2 then drives MMP-13 promoter activity and MMP-13 expression, a mechanism relevant to osteoarthritis progression. |
MEK/ERK inhibition, RUNX2 overexpression constructs, MMP-13 promoter reporter assays, immunohistochemistry, phospho-RUNX2 Western blot |
Osteoarthritis and cartilage |
High |
15564063
|
| 2011 |
CCN2 (CTGF) directly binds FGF2 through its C-terminal (CT) module with a Kd of 5.5 nM (measured by surface plasmon resonance); this interaction suppresses FGF2-induced ERK1/2, p38 MAPK, and JNK phosphorylation and nullifies FGF2-driven chondrocyte proliferation and MMP-9/MMP-13 production. CCN2 full-length also binds FGFR1 (Kd 362 nM), whereas the CT module alone does not. |
Solid-phase binding assay, co-immunoprecipitation, surface plasmon resonance, phospho-MAPK Western blot, proliferation assays |
Endocrinology |
High |
21914781
|
| 2011 |
Chlamydia trachomatis co-opts FGF2 signaling by (i) using FGF2 as a bridging molecule to interact with FGFR on host cells in an HSPG-dependent manner to enhance bacterial uptake, (ii) stimulating fgf2 transcription and FGF2 secretion via Erk1/2-dependent but FGFR-independent signaling, and (iii) causing proteasome-mediated degradation of HMW FGF2 isoforms while increasing LMW isoform release. |
FGF2 neutralization, FGFR inhibition, siRNA knockdown, Erk1/2 inhibition, proteasome inhibitor studies, conditioned medium infectivity assays, in vivo mouse model |
PLoS pathogens |
High |
21998584
|
| 2013 |
FGF2 stimulates osteogenic differentiation by inducing TAZ mRNA expression through ERK activation; nuclear TAZ then interacts with RUNX2 to activate RUNX2-mediated osteogenic gene transcription. TAZ knockdown blocks FGF2-mediated osteogenesis. |
ERK inhibitor, shRNA knockdown of TAZ, TAZ–RUNX2 co-immunoprecipitation, nuclear localization immunofluorescence, osteogenic differentiation assays |
Bone |
Medium |
24125755
|
| 2014 |
Nuclear FGF2 (in pancreatic stellate cells) and FGFR1 co-localize to the nucleus at the invasive front of human pancreatic cancer; RNAi or chemical inhibition of FGFR1 relocates FGF2 and FGFR1 to the cytoplasm, reduces PSC proliferation, and abolishes cancer cell invasion in organotypic co-cultures, demonstrating that nuclear FGF2/FGFR1 mediates PSC-driven tumor invasion. |
RNAi knockdown, FGFR chemical inhibition, immunofluorescence localization, organotypic invasion assays, human tumor tissue immunohistochemistry |
EMBO molecular medicine |
High |
24503018
|
| 2014 |
API5 confers tumor immune escape by upregulating FGF2 signaling through a FGFR1/PKCδ/ERK pathway that triggers degradation of the pro-apoptotic molecule BIM; blockade of FGF2, PKCδ, or ERK phenocopies API5 silencing, restoring T-cell-mediated tumor killing. |
RNAi silencing, overexpression, FGF2/PKCδ/ERK pharmacological inhibition, antigen-specific T-cell killing assays, BIM protein measurement |
Cancer research |
High |
24769442
|
| 2006 |
FGF2 is required for maximum bone anabolic response to parathyroid hormone (PTH): Fgf2−/− mice show significantly blunted PTH-induced bone formation and BMD increase compared to wild-type, and PTH-treated Fgf2−/− mice have reduced serum IGF-1, placing FGF2 in the PTH anabolic signaling pathway. |
Fgf2 knockout mice (Fgf2+/+, +/−, −/−), PTH administration, micro-CT, histomorphometry, DEXA, serum IGF-1 measurement |
Biochemical and biophysical research communications |
Medium |
16455048
|
| 2006 |
Heparanase (HPSE) modulates FGF2 signaling by remodeling heparan sulfate chains: low concentrations of HPSE enhance FGF2 binding and enable ERK and FAK phosphorylation in response to FGF2 (which otherwise fails to signal), while extensive HPSE degradation inhibits FGF2 binding, demonstrating that heparan sulfate chain length/sulfation state gates FGF2–FGFR signaling competence. |
FGF2 binding assays, phospho-ERK and phospho-FAK Western blots, HPSE dose-response, soluble HS competition, in vivo melanoma angiogenesis assays |
Neoplasia (New York, N.Y.) |
Medium |
16867222
|
| 2009 |
PTX3 (long pentraxin-3) binds FGF2 with high affinity and specificity, competing with FGF2's cognate tyrosine kinase receptors, thereby acting as an endogenous FGF2 antagonist that inhibits FGF2-induced angiogenesis in vitro and in vivo; the FGF2-binding domain was mapped to PTX3's N-terminal extension. |
Direct binding assays, receptor competition assays, in vitro and in vivo angiogenesis assays, N-terminal peptide mapping |
European cytokine network |
Medium |
20167562
|
| 2013 |
PKCε activation promotes FGF2 export to the plasma membrane (unconventional exocytosis) and induces FGF2/FGFR1 autocrine signaling (ERK1/2 and STAT3 phosphorylation, de novo FGF2 synthesis); PKCε activation fails in FGF2−/− cells or when exocytosis is blocked by methylamine, positioning PKCε upstream of FGF2 membrane export. |
Selective PKCε agonist (ψεRACK), cell-surface biotinylation, immunofluorescence, FGF2−/− cells, methylamine exocytosis block, in vivo rabbit cornea angiogenesis assay |
Journal of molecular and cellular cardiology |
Medium |
23880610
|
| 2017 |
Secreted AGR2 directly binds FGF2 and promotes FGF2 homodimerization, enhancing FGF2 angiogenic activity; an anti-AGR2 monoclonal antibody targeting the AGR2 self-dimerization region blocked FGF2 activation, suppressed tumor growth, and showed additive inhibition when combined with bevacizumab. |
Direct binding assays (co-IP, pulldown), dimerization assays, endothelial invasion assays, in vitro and in vivo tumor growth, neutralizing monoclonal antibody studies |
Oncogene |
Medium |
28481872
|
| 2017 |
FGF2 interacts with integrin αvβ3 through residues Lys-119/Arg-120 and Lys-125; integrin-binding defective FGF2 mutants (K119E/R120E and K125E) are defective in ERK1/2 activation and DNA synthesis and act as dominant-negative antagonists suppressing WT FGF2-induced angiogenesis in tube formation, aorta ring, and in vivo assays. |
Site-directed mutagenesis, integrin-binding assays, ERK1/2 phosphorylation, DNA synthesis assays, tube formation, aorta ring sprouting, in vivo angiogenesis |
Bioscience reports |
Medium |
28302677
|
| 2017 |
FGF2 regulates cytoglobin (CYGB) gene expression in hepatic stellate cells via a JNK/c-JUN pathway: FGF2 triggers rapid JNK and c-JUN phosphorylation, and phospho-c-JUN binds a consensus motif at −218 to −222 bp in the CYGB promoter to drive CYGB transcription, concomitantly reducing α-SMA expression and promoting HSC deactivation. |
JNK inhibitor, c-JUN siRNA/overexpression, chromatin immunoprecipitation (ChIP), CYGB promoter mapping, in vivo bile-duct ligation model with FGF2 administration |
The Journal of biological chemistry |
High |
28916723
|
| 2019 |
FGF2 stimulation of PC12 cells activates ERK through a network involving intracellular FGFR feedback and competition between FGFRs and heparan sulfate proteoglycan (HSPG) co-receptors for FGF2 binding, producing a dose-dependent shift in the distribution of transient vs. sustained single-cell ERK states; Bayesian model selection identified HSPG competition as a key circuit element. |
Microfluidics-controlled FGF2 stimulation, single-cell live ERK biosensor imaging, Bayesian parameter inference, pharmacological HSPG and FGFR perturbations |
Molecular systems biology |
Medium |
31777174
|
| 2018 |
Ablation of the LMW FGF2 isoform (Fgf2LMWKO) accelerates murine osteoarthritis with catabolic cartilage changes and increased FGFR1 expression, while ablation of HMW FGF2 isoforms (Fgf2HMWKO) protects against OA even under mechanical induction, associated with increased FGFR3 expression in cartilage; demonstrating opposing isoform-specific roles in joint homeostasis. |
Isoform-specific Fgf2 knockout mice, mechanical OA induction, micro-CT, histomorphometry, gene expression profiling |
Journal of cellular physiology |
High |
30144364
|
| 2014 |
FGF2 in the bone marrow microenvironment promotes CML cell resistance to imatinib specifically through the FGFR3/RAS/c-RAF/MAPK pathway; this resistance is overcome by ponatinib (a multikinase inhibitor targeting both BCR-ABL and FGFR), and clinical FGF2 bone marrow levels decrease upon ponatinib response, validating the pathway in patients. |
In vitro FGF2 resistance assays, pathway inhibitor studies, clinical immunohistochemistry of bone marrow FGF2, patient cohort correlation with ponatinib response |
Blood |
Medium |
24408322
|
| 2014 |
FGF2 promotes cten expression through MEK-ERK and PI3K-AKT signaling; upregulated cten is required for FGF2-mediated cell migration, as cten silencing blocks FGF2-induced migration while cten overexpression phenocopies FGF2 stimulation and occludes further FGF2 enhancement. |
Signaling pathway inhibitors, siRNA knockdown of cten, cten overexpression, cell migration assays (wound healing, transwell) |
Molecular carcinogenesis |
Medium |
23625726
|
| 2009 |
FGF2 stimulates SDF-1 expression in Sertoli cells through the Ets transcription factor Erm; FGF2 upregulates Erm via FGFR4 (expressed in TM4 Sertoli cells but not ST2 stromal cells), and Erm directly binds the EBS at −846 to −851 of the Sdf-1 promoter to drive transcription. |
siRNA knockdown of Erm, FGFR subtype blocking antibody, Sdf-1 promoter reporter assay, EMSA for Erm–EBS interaction, FGF2 treatment of TM4 and ST2 cells |
Journal of cellular physiology |
Medium |
19301256
|
| 2021 |
In glioblastoma, radiation-induced YAP nuclear translocation directly promotes FGF2 transcription (FGF2 is a novel YAP target gene); secreted FGF2 then activates MAPK-ERK signaling to promote DNA damage repair and radioresistance; YAP-FGF2-MAPK inhibition sensitizes gliomas to radiotherapy and prolongs survival in intracranial xenograft models. |
YAP overexpression/knockdown, ChIP for YAP at FGF2 promoter, FGF2 rescue experiments, ERK inhibition, intracranial patient-derived xenograft models with radiation |
Oncogene |
Medium |
34127812
|
| 2023 |
Under hypoxia, the transcription factor YY1 is lactylated at K183 (regulated by the acetyltransferase p300); lactylated YY1 directly binds the FGF2 promoter to enhance FGF2 transcription, promoting retinal neovascularization; K183 mutation abolishes these effects and p300 inhibitor A485 suppresses vascularization in vivo. |
Lactylation proteomics (77 sites on 67 proteins identified), ChIP for YY1 at FGF2 promoter, K183 point mutant of YY1, p300 overexpression/inhibition, in vitro and in vivo OIR model |
Genome biology |
High |
37085894
|
| 2023 |
VEGF-B acts as an endogenous inhibitor of FGF2/FGFR1-driven angiogenesis by directly binding FGFR1 and inducing formation of an FGFR1/VEGFR1 heterodimeric complex that suppresses FGF2-induced ERK activation and FGF2-driven angiogenesis and tumor growth. |
In vitro binding assays, FGFR1/VEGFR1 co-immunoprecipitation, ERK phosphorylation assays, in vivo angiogenesis and tumor growth models with VEGF-B gain/loss of function |
Signal transduction and targeted therapy |
Medium |
37591843
|
| 2014 |
FGF2 induces satellite cell activation by opening TRPC1 channels to increase intracellular calcium, which drives nuclear translocation of NFATc3 and NFATc2 and increases MyoD-positive cell numbers; TRPC channel blocker SKF96365 attenuates all these FGF2-induced effects. |
Immunostaining for TRPC1, calcium imaging with X-rhod-1 in CD34-labeled satellite cells on isolated muscle fibers, NFATc2/3 nuclear translocation imaging, MyoD+ cell counting, TRPC pharmacological inhibition |
Frontiers in physiology |
Medium |
24575047
|
| 2022 |
In nasopharyngeal carcinoma, tumor cell–derived FGF2 activates pericyte FGFR1/AHR signaling, driving pericyte-specific CXCL14 expression; pericyte-derived CXCL14 recruits and polarizes macrophages toward M2 phenotype (TAMs), promoting metastasis; FGF2 knockdown or pericyte depletion blocks CXCL14 and TAM infiltration. |
Gain- and loss-of-function of FGF2/FGFR1, genetic pericyte depletion, CXCL14 expression analysis, macrophage polarization assays, clodronate liposome macrophage depletion, xenograft metastasis models |
JCI insight |
Medium |
35439170
|
| 2021 |
FGF2 gene disruption in mice increases thermogenic capacity of brown and beige fat (elevated UCP1, enhanced cold-tolerance); mechanistically, FGF2 acts in autocrine/paracrine fashion to suppress both PGC-1α and PPARγ expression, thereby inhibiting UCP1 transcription; this suppression was confirmed by exogenous FGF2 treatment of brown/beige adipocytes. |
FGF2 KO mice (chow and HFD), UCP1 expression, respiratory exchange ratio measurement, cold exposure, exogenous FGF2 treatment, Co-IP, ChIP, luciferase reporter assays for PGC-1α and PPARγ |
Molecular metabolism |
Medium |
34710640
|
| 2019 |
In breast cancer, estrogen/GPER signaling in cancer-associated fibroblasts (CAFs) upregulates FGF2 secretion via EGFR/ERK/c-fos/AP-1 cascade; secreted FGF2 then activates FGFR1 in MDA-MB-231 cancer cells, inducing CTGF expression and promoting cancer cell migration and invasion through a paracrine FGF2/FGFR1 feedforward loop. |
qPCR, Western blot, ELISA, ChIP, CRISPR/Cas9 FGFR1 knockout in cancer cells, conditioned medium transfer experiments, migration/invasion assays |
Cells |
Medium |
30866584
|
| 2020 |
FGF2 induces Connexin-43 hemichannel (Cx43 HC) opening in tanycytes, causing ATP release into the extracellular milieu; extracellular ATP then activates P2Y1 receptors to drive tanycyte proliferation; Cx43 HC blockers or P2Y1 receptor inhibitors prevent FGF2-induced β-tanycyte proliferation both in vitro and in vivo (intra-third-ventricle infusion in rats). |
BrdU incorporation, Cx43 HC inhibitor pharmacology, ATP release measurement, P2Y1 receptor antagonists, in vivo FGF2 + Cx43 HC inhibitor co-infusion into third ventricle |
Journal of neurochemistry |
Medium |
32936929
|
| 2001 |
TGFβ2 and FGF2 cooperate with LIF to induce nephrogenesis in isolated metanephric mesenchyme; the inductive response is abrogated by the Wnt antagonist sFRP1 and accompanied by nuclear activation of Tcf1/Lef1, placing FGF2 upstream of a Wnt-dependent mechanism in kidney tubule formation. |
Rat metanephric mesenchyme explant culture, neutralizing sFRP1 protein, Tcf1/Lef1 nuclear activation assay, tubule quantification |
Development (Cambridge, England) |
Medium |
11245570
|
| 2005 |
FGF2 treatment of developing calvarial bone stimulates Bmp2 gene expression, while Runx2 gene disruption abolishes Bmp2 expression without affecting Fgf2; Runx2-deficient cells show markedly reduced Bmp2 that is rescued and amplified by Runx2 transfection plus FGF2 treatment, placing Runx2 as an obligate mediator downstream of FGF2 in the FGF2→Runx2→Bmp2→Dlx5/Msx2 axis during cranial bone development. |
Runx2−/− mice, Runx2 expression plasmid transfection, FGF2 treatment of primary bone cells and MC3T3-E1 cells, Bmp2/Dlx5/Msx2 expression analysis |
Developmental dynamics |
Medium |
15765505
|
| 2012 |
HoxA10 directly activates the FGF2 promoter via two cis-elements in myeloid progenitors; HoxA10-driven FGF2 secretion stimulates autocrine PI3K-dependent β-catenin accumulation and progenitor proliferation, identifying FGF2 as a HoxA10 target gene mediating progenitor expansion. |
Promoter reporter assays, ChIP for HoxA10 at FGF2 promoter, ELISA for FGF2 secretion, PI3K inhibition, β-catenin Western blot, proliferation assays |
The Journal of biological chemistry |
Medium |
22493287
|
| 2010 |
PGF2α induces osteoblast proliferation via endogenous FGF2 in a FGFR1-dependent manner: PGF2α activates Ras and MAP-kinase, increases Bcl-2, c-Myc, MDM2, and cyclins D/E in Fgf2+/+ but not Fgf2−/− osteoblasts; neutralizing secreted FGF2 or silencing FGFR1 blocks these effects, demonstrating autocrine FGF2 as the mediator. |
Fgf2 KO calvarial osteoblasts, FGF2 neutralizing antibody, FGFR1 siRNA silencing, Ras activity assay, phospho-MAPK and cell cycle protein Western blots |
Journal of cellular physiology |
Medium |
20432442
|
| 2015 |
FGF2 and IL-17 synergistically induce epithelial repair genes; Act1 (adaptor in IL-17 signaling) suppresses FGF2-induced ERK activation by binding GRB2 and preventing GRB2 association with SOS1; when IL-17 receptor engages Act1, Act1 is sequestered at the receptor complex, releasing its inhibition of FGF2/GRB2/SOS1 signaling and enabling synergistic tissue repair. |
Co-immunoprecipitation of Act1–GRB2 and GRB2–SOS1, Act1 KO mice, FGF2/IL-17 deficiency mouse models, DSS colitis model, gene expression analysis |
Immunity |
High |
26320657
|
| 2016 |
FGF2 suppresses miR-105 transcription by recruiting the NF-κB subunit p65 to the miR-105 promoter; loss of miR-105 allows Runx2 (a direct miR-105 target) to accumulate, driving ADAMTS4/5/7/12 expression and aggrecan/collagen degradation in osteoarthritic cartilage. |
miRNA microarray, miR-105 mimic/inhibitor, Runx2 3′-UTR luciferase reporter, ChIP for p65 at miR-105 promoter, siRNA knockdown of Runx2, OA patient tissue correlation |
Journal of molecular medicine (Berlin, Germany) |
Medium |
26816250
|
| 2015 |
Endothelial mTORC2 (Rictor) is essential for sustained FGF2-induced neovascularization: Rictor knockout in endothelium prevents FGF2-driven capillary remodeling, hemorrhagic neovascularization in Matrigel plugs, and capillary network formation in vitro; high-dose FGF2 induces Rictor expression and mTORC2-specific PKCα and AKT phosphorylation, placing mTORC2 downstream of FGF2 in extensive angiogenesis. |
Endothelium-specific Rictor conditional KO (embryonic and adolescent), FGF2 Matrigel plug assay, in vitro aortic endothelial cell network formation, Western blot for phospho-PKCα and phospho-AKT |
Scientific reports |
Medium |
26635098
|