Recombinant Human FGFR1 /CD331 Protein
- Known as:
- Recombinant Human FGFR1 /CD331 Protein
- Catalog number:
- fg-781
- Product Quantity:
- USD
- Category:
- -
- Supplier:
- Proxinobio
- Gene target:
- Recombinant Human FGFR1 /CD331 Protein
Related genes to: Recombinant Human FGFR1 /CD331 Protein
- Gene:
- FGFR1 NIH gene
- Name:
- fibroblast growth factor receptor 1
- Previous symbol:
- FLT2, KAL2
- Synonyms:
- H2, H3, H4, H5, CEK, FLG, BFGFR, N-SAM, CD331
- Chromosome:
- 8p11.23
- Locus Type:
- gene with protein product
- Date approved:
- 1992-02-25
- Date modifiied:
- 2019-04-23
Related products to: Recombinant Human FGFR1 /CD331 Protein
Related articles to: Recombinant Human FGFR1 /CD331 Protein
- Limited targeted agents are approved for pediatric sarcomas. Tyrosine kinase (TK) inhibitors (TKi) have shown clinical efficacy in some, but not all, young patients with sarcoma. A major obstacle preventing further advances and clinical implementation is the lack of predictive response biomarkers to guide TK-targeted treatments. TK-activating fusions or mutations are rare in these patients. RNA overexpression of TKs is a frequent feature. The unresolved question is when upregulated TK expression is associated with kinase activation and signaling dependence. We explored the TK molecular landscape of 107 patients with sarcoma from the ZERO Childhood Cancer Precision Medicine Program (ZERO) using whole-genome and -transcriptome sequencing. Phosphoproteomic analyses of tyrosine phosphorylation (pY) and functional in vitro and in vivo assays were performed in cell lines and patient-derived xenografts (PDX). Our analysis shows that although novel genomic driver lesions are rare, when present they are therapeutically actionable as exemplified by a novel LSM1-FGFR1 fusion identified in a patient with osteosarcoma. We further show that in certain contexts, TK RNA expression can indicate TK pathway activity and predict TKi sensitivity. We highlight the utility of FGFR inhibitors in PAX3-FOXO1 fusion-positive rhabdomyosarcomas (FP-RMS) characterized by high FGFR4 and FGF8 RNA expression levels and FGFR4 activation (FGFR4_pY). We demonstrate marked tumor growth inhibition in all FP-RMS PDXs treated with single-agent FGF401 (FGFR4-specific inhibitor) and single-agent lenvatinib (multikinase FGFR inhibitor) and report a clinical response to lenvatinib in a patient with relapsed metastatic FP-RMS. Altogether, we identified new patients with sarcoma who may benefit from FGFR inhibitors, most notably FP-RMS via FGFR4/FGF8 coexpression. - Source: PubMed
Publication date: 2026/04/27
Fordham Ashleigh MBrown Lauren MMayoh ChelseaSalib AliceBarger Zara AWong MarieLim Kam Sian Terry C CHu ChangyuanXie JinhanGunther KateTrebilcock PeterTerry Rachael LBarahona PauletteAjuyah PamelaSherstyuk AlexandraAvila AnicaCadiz RoxannePerkins Callum MGifford Andrew JMao JieDolman M Emmy MZhao AndreaO'Regan Luke PGorgels DanielLau Loretta M SZiegler David SHaber MichelleTyrrell VanessaLock Richard BCowley Mark JNicholls WayneDaly Roger JEkert Paul GFleuren Emmy D G - The third-generation EGFR tyrosine kinase inhibitor (TKI) osimertinib (AZD9291) has significantly improved the survival in EGFR-mutant lung cancer patients. Our team developed limertinib (ASK120067), a novel third-generation EGFR inhibitor with remarkable antitumor effects, which has been launched in China. Despite initial therapeutic responses, EGFR TKIs-treated patients ultimately experience fatal metastatic recurrence and disease progression. However, the underlying mechanism of driving metastasis remains poorly understood. Here, we aim to investigate the pro-metastatic mechanism following treatment with third-generation EGFR TKIs. Transcriptomics analyses of EGFR TKI-resistant tumor models revealed an aberrant upregulation of S1PR3, which conferred enhanced metastatic potential to lung cancer. S1PR3 inhibition dramatically reduced metastasis in resistant cells, while its overexpression potentiated metastatic abilities in parental cells. Notably, S1PR3 was highly enriched in clinical samples with AZD9291 resistance and correlates with poor prognosis. Mechanistically, we found that S1PR3 upregulated RAC1-GTP expression to activate PAK1, thereby promoting epithelial-mesenchymal transition (EMT) and enhancing metastatic capacity of resistant cells. Further studies identified that the overexpression of fibroblast growth factor receptor 1 (FGFR1) increased S1PR3 expression through signal transducer and activator of transcription 4 (STAT4) to promote the emergence of metastatic-resistant cells. Importantly, targeting S1PR3 or FGFR1 blocks metastasis in EGFR TKI-resistant models. - Source: PubMed
Publication date: 2026/04/23
Lai MengzhenChen JiayingQin YeZhang HuiPan ZiluZhang TaoTong LinjiangTang HaotianBai GangLiu QiupeiLi YanFeng FangSong PeiranLiu YingqiangChen YiFang YanTang BencanGeng MeiyuYu KerChen HaoDing JianXie Hua - Frailty arising from loss of muscle function and mass is a significant health concern impacting quality of life and dramatically increasing health care costs as our population ages. Ameliorating frailty derived from reduced muscle function is thus a critical research priority to improve health span. Cell intrinsic defects in muscle stem cells (MuSC), or satellite cells, occur as skeletal muscle ages, reducing the capacity of MuSCs to maintain and repair skeletal muscle and are accompanied by cell nonautonomous changes. Although rejuvenating stem cells in aged tissues or organs has potential to improve muscle aging phenotypes, we found that the extracellular environment in aged mice abrogates rejuvenated muscle stem cell potential. MuSCs from young mice were unable to grow on extracellular matrix derived from aged mice that contains elevated collagen protein levels, establishing a critical role for the environment in contributing to muscle phenotypes in aging. Combining an inducible FGF receptor 1 (FGFR1) to rescue MuSC intrinsic aging defects with a drug to reduce fibrosis partially rescued muscle mass loss in aged mice. We conclude that aging affects tissues, and particularly skeletal muscle tissue, via complex multifactorial processes requiring multifaceted interventions to improve aging phenotypes. - Source: PubMed
Publication date: 2026/04/13
Cutler Alicia AVallery Tenaya KVogler Thomas OKurland JesseZlatklov Thea SAntwine TiffanyBetta Nicole DallaChang Tze-LingPawlikowski BradButcher Carson HLavine Kory JOrnitz David MAnseth Kristi SOlwin Bradley B - Brain aging is characterized by memory loss and cognitive impairment. With the growth of the population and advances in medical care, the size of the aging population is increasing. Therefore, the discovery of anti-aging drugs has become a popular topic in recent years. Fibroblast growth factor 21 (FGF21) has been reported to inhibit oxidative stress, reduce inflammation, and delay senescence. The present study was designed to investigate the effects of recombinant human FGF21 (rhFGF21) on senescence in the brain in a mouse model of D-galactose (D-gal)-induced aging. The behavioral tests revealed that rhFGF21 improved D-gal-induced learning and memory impairment in mice. RhFGF21 improved the morphology of cortical and hippocampal neurons and increased the expression of PSD95 in the model mice. RhFGF21 reduced the number of microglia and astrocytes in the cortex and hippocampus, increased the activities of the antioxidant enzymes (GSH-PX, CAT, and SOD), and inhibited the expression of p-NFκB and p53 proteins, as well as the mRNA expression of the inflammatory cytokines (IL-1β, IL-6, TNFα, and iNOS). SIRT1 regulates senescence and inflammation, and FGF21 participates in physiological and pathological processes by binding to the FGFR1. Therefore, we measured SIRT1 and activated FGFR1 (p-FGFR1) levels. RhFGF21 administration increased the expression of cortical and hippocampal SIRT1 and p-FGFR1 in D-gal-induced aging mice. These data suggested that rhFGF21 alleviated learning and memory impairment in a mouse model of D-gal-induced aging by increasing antioxidant enzyme activity, inhibiting inflammation, and senescence-related gene expression via modulating FGFR1 and SIRT1. - Source: PubMed
Publication date: 2026/04/21
Wu JunyiWang XianshiZheng ShiyiXu YifanQiu RuiyingYe ShashaZhao Yeli - Fibroblast growth factor 23 (FGF23) is a phosphate-regulating hormone produced by osteocytes. In iron deficiency anemia (IDA) and in chronic kidney disease (CKD), FGF23 is also produced by erythroid cells. Recent studies have suggested that rising circulating FGF23 is negatively associated with erythropoiesis in IDA and CKD. However, the distinct contributions of bone- and erythroid-produced FGF23 to anemia in IDA remain unclear. Using the conditional deletion of Fgf23 in osteocytes (Fgf23Dmp1-cKO) and in erythroid cells (Fgf23HbB-cKO) in mice fed a control (Ctr) or an iron deficient (ID) diet, we first determined that in ID, osteocytes and erythroid cells are distinct sources of circulating intact FGF23 (iFGF23) and FGF23 cleaved peptides, respectively. We further show that erythroid-specific deletion of Fgf23 corrected anemia in ID mice, and overexpression induced anemia in Ctr mice unlike osteocyte-specific deletion or overexpression of Fgf23. Importantly, erythroid-specific deletion of Furin (FurinHbB-cKO), the enzyme responsible for FGF23 cleavage, led to increased production of iFGF23 from erythroid cells and aggravated ID-induced anemia. iFGF23 also dose-dependently blocked the differentiation of erythroid progenitors in culture triggering mitochondrial dysfunction leading to impaired erythropoiesis. These effects were fully suppressed by co-treatment with an FGFR1 inhibitor. Finally, erythroid-specific deletion of Fgf23 in an animal model of progressive CKD prevented the development of anemia of CKD. In aggregate, our results show that erythroid-expressed FGF23 is a negative regulator of erythropoiesis that contributes to anemia via direct paracrine FGFR1 activation in erythroid precursors. - Source: PubMed
Publication date: 2026/04/21
Courbon GuillaumeThomas Jane JJ Duque EduardoKentrup DominikSpindler JadeahSemancheck WilliamTracey EmilyVaughan Douglas EChang WenhanCreemers John W MJi PengIsakova TamaraMartin AlineDavid Valentin