PD173074 is a potent FGFR1 inhibitor with an IC₅₀ of 25 nM and also inhibits VEGFR2 with an IC₅₀ of 100-200 nM, showing 1000-fold selectivity for FGFR1 over PDGFR and c-Src.

PD 173074 inhibits autophosphorylation of FGFR1 in a dose-dependent manner with an IC₅₀ in the range 1-5 nM. PD 173074 is an ATP-competitive inhibitor of FGFR1 with an inhibitory constant (K_i) of 40 nM^[1]. PD 173074 and SU 5402 produce concentration-dependent reductions in FGF-2 enhancement of granule neuron survival, with IC₅₀ values of 8 nM and 9 μM, respectively. PD 173074 does not inhibit neurotrophic and neuritogenic actions of FGF-2 signalling molecules in cerebellar granule neurons. PD 173074 and SU 5402 concentration-dependently inhibits the neurite growth response, when tested on FGF-2-treated granule neurons growing on polylysine/laminin, with IC₅₀s of 22 nM and 25 μM, respectively^[2]. PD173074 effectively antagonizes the effect of FGF-2 on proliferation and differentiation of OL progenitors in culture. Mitogen-activated protein kinase (MAPK) activation, a downstream event after activation of either FGFR or PDGFR, is also blocked by PD173074 in OL progenitors stimulated with FGF-2 but not PDGF^[3].

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

PD 173074 (1 mg/kg, i.p.) exhibits dose-dependent inhibition of FGF-induced neovascularization and angiogenesis in mice^[1]. D173074 (25 mg/kg, p.o.) significantly inhibits tumor growth in mice^[4].

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

523.67

C₂₈H₄₁N₇O₃

219580-11-7

Room temperature in continental US; may vary elsewhere.

Powder	-20°C	3 years
	4°C	2 years
In solvent	-80°C	6 months
	-20°C	1 month

In Vitro: 

DMSO : ≥ 52 mg/mL (99.30 mM)

* “≥” means soluble, but saturation unknown.

*

请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。
储备液的保存方式和期限：-80°C, 6 months; -20°C, 1 month。-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。

In Vivo:

请根据您的实验动物和给药方式选择适当的溶解方案。以下溶解方案都请先按照 In Vitro 方式配制澄清的储备液，再依次添加助溶剂：

——为保证实验结果的可靠性，澄清的储备液可以根据储存条件，适当保存；体内实验的工作液，建议您现用现配，当天使用； 以下溶剂前显示的百
分比是指该溶剂在您配制终溶液中的体积占比；如在配制过程中出现沉淀、析出现象，可以通过加热和/或超声的方式助溶

• 1.

  请依序添加每种溶剂： 10% DMSO    40% PEG300    5% Tween-80    45% saline

  Solubility: ≥ 2.5 mg/mL (4.77 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (4.77 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中，混合均匀；向上述体系中加入50 μL Tween-80，混合均匀；然后继续加入 450 μL生理盐水定容至 1 mL。

  将 0.9 g 氯化钠，完全溶解于 100 mL ddH₂O 中，得到澄清透明的生理盐水溶液

• 2.

  请依序添加每种溶剂： 10% DMSO    90% corn oil

  Solubility: ≥ 2.5 mg/mL (4.77 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (4.77 mM，饱和度未知) 的澄清溶液，此方案不适用于实验周期在半个月以上的实验。

  以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中，混合均匀。

• 3.

  请依序添加每种溶剂： 10% DMSO    90% (20% SBE-β-CD in saline)

  Solubility: ≥ 2.08 mg/mL (3.97 mM); Clear solution

  此方案可获得 ≥ 2.08 mg/mL (3.97 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 20.8 mg/mL 的澄清 DMSO 储备液加到 900 μL 20% 的 SBE-β-CD 生理盐水水溶液中，混合均匀。

  将 2 g 磺丁基醚 β-环糊精加入 5 mL 生理盐水中，再用生理盐水定容至 10 mL，完全溶解，澄清透明

• [1]. Mohammadi M, et al. Crystal structure of an angiogenesis inhibitor bound to the FGF receptor tyrosine kinase domain. EMBO J. 1998 Oct 15;17(20):5896-904.

  [2]. Skaper SD, et al. The FGFR1 inhibitor PD 173074 selectively and potently antagonizes FGF-2 neurotrophic and neurotropic effects. J Neurochem. 2000 Oct;75(4):1520-7.

  [3]. Bansal R, et al. Specific inhibitor of FGF receptor signaling: FGF-2-mediated effects on proliferation, differentiation, and MAPK activation are inhibited by PD173074 in oligodendrocyte-lineage cells. J Neurosci Res. 2003 Nov 15;74(4):486-93.

  [4]. Trudel S, et al. Inhibition of fibroblast growth factor receptor 3 induces differentiation and apoptosis in t(4;14) myeloma. Blood. 2004 May 1;103(9):3521-8.

  [5]. Mahe M, et al. An FGFR3/MYC positive feedback loop provides new opportunities for targeted therapies in bladder cancers. EMBO Mol Med. 2018 Apr;10(4). pii: e8163.

  [6]. Zheng Y, et al. Inhibition of FGFR Signaling With PD173074 Ameliorates Monocrotaline-induced Pulmonary Arterial Hypertension and Rescues BMPR-II Expression. J Cardiovasc Pharmacol. 2015 Nov;66(5):504-14.

An NIH 3T3 cell line overexpressing VEGFR2 (Flk-1) has been described previously. This cell line also expresses FGFR1 endogenously. Cells (1×10⁶) in DMEM supplemented with 10% calf serum are seeded in 10 cm² dishes and allowed to grow for 48 h. The medium is then removed and the cells are made quiescent in starvation medium (DMEM with 0.1% calf serum). After 18 h, the cells are incubated for 5 min with various concentrations of PD 173074 prepared in starvation medium. The cells are then stimulated with growth factor [VEGF (100 ng/mL) or aFGF (100 ng/mL) and heparin (10 µg/mL)] for 5 min at 37°C. The cells are washed with ice-cold PBS and lysed in 1 mL of lysis buffer (25 mM HEPES pH 7.5, 150 mM NaCl, 1% Triton X-100, 10% glycerol, 1 mM EGTA, 1.5 mM MgCl₂, 1 mM PMSF, 10 µg/mL aprotonin, 10 µg/mL leupeptin) containing phosphatase inhibitor (0.2 mM Na₃VO₄). For inhibition studies of FGFR1, cell lysates are immunoprecipitated with antibodies to FGFR1, and then analyzed by SDS-PAGE and immunoblotting with antibodies to phosphotyrosine. For inhibition studies of VEGFR2, cell lysates (20 µL) are analyzed directly by SDS-PAGE and immunoblotted with antibodies to phosphotyrosine.

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

Six-week-old athymic nude mice are inoculated subcutaneously with 3×10⁵ NIH 3T3 cells expressing Y373C FGFR3 and Ras V12. Intraperitoneal injections of either 20 mg/kg PD173074 or 0.05 mol/Llactic acid buffer are initiated on the day of tumor injection and continued for 9 days. Ten mice for each experiment are included.

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

• [1]. Mohammadi M, et al. Crystal structure of an angiogenesis inhibitor bound to the FGF receptor tyrosine kinase domain. EMBO J. 1998 Oct 15;17(20):5896-904.

  [2]. Skaper SD, et al. The FGFR1 inhibitor PD 173074 selectively and potently antagonizes FGF-2 neurotrophic and neurotropic effects. J Neurochem. 2000 Oct;75(4):1520-7.

  [3]. Bansal R, et al. Specific inhibitor of FGF receptor signaling: FGF-2-mediated effects on proliferation, differentiation, and MAPK activation are inhibited by PD173074 in oligodendrocyte-lineage cells. J Neurosci Res. 2003 Nov 15;74(4):486-93.

  [4]. Trudel S, et al. Inhibition of fibroblast growth factor receptor 3 induces differentiation and apoptosis in t(4;14) myeloma. Blood. 2004 May 1;103(9):3521-8.

  [5]. Mahe M, et al. An FGFR3/MYC positive feedback loop provides new opportunities for targeted therapies in bladder cancers. EMBO Mol Med. 2018 Apr;10(4). pii: e8163.

  [6]. Zheng Y, et al. Inhibition of FGFR Signaling With PD173074 Ameliorates Monocrotaline-induced Pulmonary Arterial Hypertension and Rescues BMPR-II Expression. J Cardiovasc Pharmacol. 2015 Nov;66(5):504-14.