1. Signaling Pathways
  2. Cell Cycle/DNA Damage
  3. Topoisomerase

Topoisomerase

Topoisomerases are enzymes that regulate the overwinding or underwinding of DNA. The winding problem of DNA arises due to the intertwined nature of its double-helical structure. Topoisomerases are isomerase enzymes that act on the topology of DNA. Type I topoisomerase cuts one strand of a DNA double helix, relaxation occurs, and then the cut strand is reannealed. Type I topoisomerases are subdivided into two subclasses: type IA topoisomerases, which share many structural and mechanistic features with the type II topoisomerases, and type IB topoisomerases, which utilize a controlled rotary mechanism. Type II topoisomerase cuts both strands of one DNA double helix, pass another unbroken DNA helix through it, and then reanneal the cut strands. This class is also split into two subclasses: type IIA and type IIB topoisomerases, which possess similar structure and mechanisms.

Topoisomerase Isoform Specific Products:

  • Topoisomerase

  • Topo I

  • Topo II

Topoisomerase 相关产品 (77):

Cat. No. Product Name Effect Purity
  • HY-15142
    Doxorubicin hydrochloride Inhibitor 99.47%
    Doxorubicin hydrochloride是一种有细胞毒性的蒽环类抗生素,用于治疗多种癌症。Doxorubicin 在癌细胞中起作用的可能机制是嵌入 DNA 和破坏 topoisomerase-II 介导的DNA修复。Doxorubicin hydrochloride 下调 AMPK 的基础磷酸化以及下游 acetyl-CoA 羧化酶。
  • HY-13629
    Etoposide Inhibitor 99.94%
    Etoposide (VP-16; VP-16-213) 是用于治疗多种癌症的化疗药物,通过与拓扑异构酶 II 和 DNA 形成复合物来抑制DNA合成。Etoposide 阻断细胞周期 G2 期并诱导细胞凋亡。
  • HY-16562
    Irinotecan Inhibitor 99.84%
    Irinotecan是拓扑异构酶I抑制剂,通过与拓扑异构酶I-DNA复合物结合来防止DNA链的再连接。
  • HY-16560
    Camptothecin Inhibitor 98.62%
    Camptothecin (Campathecin) 是有效的 DNA拓扑异构酶 I 抑制剂,IC50 值为 679 nM。
  • HY-13704
    SN-38 Inhibitor 99.46%
    SN-38 (NK012) 是拓扑异构酶I抑制剂伊立替康的活性代谢产物。 SN-38 (NK012) 抑制DNA合成RNA 合成IC50分别为0.077 和 1.3 μM。
  • HY-N0275
    (±)-10-Hydroxycamptothecin Inhibitor
    (±)-10-Hydroxycamptothecin 是从喜树中分到的生物碱,能够抑制拓扑异构酶 I (topoisomerase I) 的活性,具有广谱的抗肿瘤活性。
  • HY-N2331
    Proscillaridin A Inhibitor 98.38%
    Proscillaridin A 是强力的拓扑异构酶 I 和 II topoisomerase I/II 抑制剂,抑制拓扑异构酶 I 和 II 的 IC50 值分别为 30 nM 和 100 nM。
  • HY-106662
    Chloroquinoxaline sulfonamide Inhibitor
    Chloroquinoxaline sulfonamide (Chloroquinoxaline) 是 sulfaquinoxaline 的结构类似物,是拓扑异构酶 II alpha/beta (topoisomerase II alpha/beta) 毒物。Chloroquinoxaline sulfonamide 用于控制家禽,兔,绵羊和牛的球虫病[1] 。 具有抗肿瘤活性。
  • HY-13624A
    Epirubicin hydrochloride Inhibitor 98.88%
    Epirubicin hydrochloride (4'-Epidoxorubicin hydrochloride) 是阿霉素的半合成的 L-阿拉伯糖衍生物,能够抑制 Topoisomerase,起到抗肿瘤的作用。Epirubicin hydrochloride 是一种 Forkhead box 蛋白 p3 (Foxp3) 抑制剂,可抑制调节性 T 细胞活性。
  • HY-13062
    Daunorubicin Hydrochloride Inhibitor 99.37%
    Daunorubicin Hydrochloride (Daunomycin Hydrochloride; RP 13057 Hydrochloride; Rubidomycin Hydrochloride) 是具有有效抗肿瘤活性的 DNA拓扑异构酶II。Daunorubicin Hydrochloride (Daunomycin Hydrochloride; RP 13057 Hydrochloride; Rubidomycin Hydrochloride) 抑制敏感和耐药的埃利氏腹水肿瘤细胞的 DNA 和 RNA 合成
  • HY-13768A
    Topotecan Hydrochloride Inhibitor 99.59%
    Topotecan Hydrochloride (SKF 104864A Hydrochloride) 是具有抗癌活性的 拓扑异构酶I 抑制剂。
  • HY-16261
    Aldoxorubicin Inhibitor
    Aldoxorubicin (INNO-206) 是多柔比星 (DNA 拓扑异构酶 II 抑制剂) 的白蛋白结合前药,在酸性条件下从白蛋白中释放出来。 Aldoxorubicin (INNO-206) 在各种癌细胞系和小鼠肿瘤模型中具有有效的抗肿瘤活性。
  • HY-13502
    Mitoxantrone Inhibitor >98.0%
    Mitoxantrone是拓扑异构酶II (topoisomerase II)的抑制剂;也可抑制蛋白激酶C (PKC), IC50值为8.5 μM。
  • HY-16562A
    Irinotecan hydrochloride Inhibitor 99.75%
    Irinotecan hydrochloride是一种拓扑异构酶I抑制剂,主要用于治疗结肠癌和直肠癌。
  • HY-17381
    Idarubicin hydrochloride Inhibitor 99.82%
    Idarubicin hydrochloride是一种蒽环类抗白血病药物。 它抑制 拓扑异构酶II,干扰DNA复制和RNA转录。
  • HY-17577
    Berberine chloride hydrate Inhibitor 99.56%
    Berberine chloride hydrate (Natural Yellow 18 chloride hydrate) 是从中草药黄连中分离出来的一种生物碱,常用作抗生素。Berberine chloride hydrate 诱导活性氧 (ROS) 生成并抑制 DNA 拓扑异构酶 (topoisomerase)。抗肿瘤特性。
  • HY-13631A
    Exatecan Mesylate Inhibitor 99.12%
    Exatecan Mesylate 是一种 DNA 拓扑异构酶 I (topoisomerase I) 抑制剂,IC50 值为 2.2 μM (0.975 μg/mL),可用于癌症研究。
  • HY-13555
    β-Lapachone Inhibitor 99.98%
    β-Lapachone (ARQ-501;NSC-26326) 是一种天然的萘醌类化合物,是拓扑异构酶 I (topoisomerase I) 抑制剂,通过抑制细胞周期进程来诱导细胞凋亡。
  • HY-10529
    Betulinic acid Inhibitor 98.18%
    Betulinic acid 是一种天然的五环三萜类化合物,为真核细胞拓扑异构酶 I (topoisomerase I) 的抑制剂,IC50 值为 5 μM,具有抗炎,抗疟疾,抗艾滋病和抗肿瘤等活性。Betulinic acid 也是一种新的 NF-kB 的激动剂。
  • HY-13761
    Teniposide Inhibitor 99.84%
    Teniposide 是一种足叶草毒素衍生物,是拓扑异构酶 II (topoisomerase II) 的抑制剂,同时为一种化疗剂。
Isoform Specific Products

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