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肉盘菌内酯

肉盘菌内酯,133613-71-5,结构式
肉盘菌内酯
  • CAS号:133613-71-5
  • 英文名:galiellalactone
  • 中文名:肉盘菌内酯
  • CBNumber:CB21397587
  • 分子式:C11H14O3
  • 分子量:194.23
  • MOL File:133613-71-5.mol
肉盘菌内酯化学性质
  • 沸点 :400.7±38.0 °C(Predicted)
  • 密度 :1.29±0.1 g/cm3(Predicted)
  • 储存条件 :Store at -20°C
  • 溶解度 :DMSO:0.97(Max Conc. mg/mL);4.99(Max Conc. mM)
    Ethanol:0.97(Max Conc. mg/mL);4.99(Max Conc. mM)
  • 形态 :White to light tan solid.
  • 酸度系数(pKa) :12.48±0.40(Predicted)

肉盘菌内酯性质、用途与生产工艺

  • 生物活性 Galiellalactone 是一种小的无毒且无致突变性的真菌代谢产物,是一种选择性的 STAT3 信号抑制剂,IC50 值为 250-500 nM。Galiellalactone 可用于研究去势抵抗性前列腺癌。
  • 靶点

    STAT3

    250-500 nM (IC 50 )

  • 体外研究

    Galiellalactone (2.5-25 μM; 24-72 hour) induces apoptosis of prostate cancer (PCa) cell lines expressingp-Stat3.
    Galiellalactone (2.5-25 μM; 24-72 hour) decreases viability of DU145 cells.
    Galiellalactone (10 μM) inhibits STAT3 signaling activity as assessed by luciferase reporter gene assay in IL-6-stimulated LNCaP cells.
    Galiellalactone (10-100 μM; 1 hour) binds directly to STAT3 in DU145 cells .
    Galiellalactone (5-50 μM; 1 hour) interferes with STAT3 DNA binding without inhibiting phosphorylation in DU145 cells .

    Apoptosis Analysis

    Cell Line: DU145, PC-3, and LNCaP cells
    Concentration: 0, 2.5, 5, 10, 25 μM
    Incubation Time: 24, 48, 72 hours
    Result: Induced an apoptotic response in PC-3 and DU145 cells.

    Cell Viability Assay

    Cell Line: DU145 cells
    Concentration: 0, 2.5, 5, 10, 17.5, 25 μM
    Incubation Time: 24, 48, 72 hours
    Result: Decreased DU145 cells viability in a dose- and time-dependent manner.

    Western Blot Analysis

    Cell Line: DU145 cells
    Concentration: 0, 10, 25 μM
    Incubation Time: 48 hours
    Result: Induced expression of the apoptotic marker cleaved caspase-3 and increased expression of cleaved PARP.

    Western Blot Analysis

    Cell Line: DU145 cells
    Concentration: 0, 10, 25, 50, 100 μM
    Incubation Time: 1 hour
    Result: Prevented the binding of the biotinylated analogue of galiellalactone (GL-biot) to STAT3 in a dose-dependent manner demonstrating competitive binding.

    Western Blot Analysis

    Cell Line: DU145 cells
    Concentration: 0, 5, 10, 25, 50 μM
    Incubation Time: 1 hour
    Result: Inhibited STAT3 binding to DNA in a dose-dependent manner.
    Did not affect phosphorylation of STAT3 Tyr-705 and Ser-727 or the expression of total STAT3.
  • 体内研究

    Galiellalactone (1, 3 mg/kg; daily i.p. for 3 weeks) inhibits PCa tumor growth in vivo.

    Animal Model: Male nude NMR1 mice are injected PCa cell
    Dosage: 0, 1, 3 mg/kg
    Administration: Daily i.p. injections for 3 weeks
    Result: Reduced the tumor growth rate in DU145 xenografts by 41-42% and was well tolerated.
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