Synthesis of a Bone-Targeted Bortezomib with In Vivo Anti-Myeloma Effects in Mice.

Synthesis of a Bone-Targeted Bortezomib with In Vivo Anti-Myeloma Effects in Mice.
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合成具有小鼠体内抗骨髓瘤作用的骨靶向硼替佐米。

DOI:
10.3390/pharmaceutics10030154
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发表时间:
2018-09-10
期刊:
影响因子:
5.4
通讯作者:
Xing L
Xing L
中科院分区:
医学2区
文献类型:
--
作者:
Wang H;Xiao L;Tao J;Srinivasan V;Boyce BF;Ebetino FH;Oyajobi BO;Boeckman RK Jr;Xing L

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多发性骨髓瘤 (MM) 是影响骨骼和骨髓的最常见癌症,对大多数患者来说仍然无法治愈;因此需要新的疗法。硼替佐米 (Btz) 是 FDA 批准的用于治疗 MM 患者的药物。然而,其严重的副作用需要减少剂量或可能停止治疗。为了克服这一限制,我们使用新型化学接头将 Btz 与缺乏抗破骨活性的双磷酸盐 (BP) 残基缀合,并生成了一种新的骨靶向 Btz 蛋白酶体抑制剂 (BP-Btz)。我们证明,BP-Btz(而非 Btz)与骨切片结合并在体外抑制 MM 细胞的生长。在 MM 小鼠模型中,BP-Btz 比 Btz 更有效地减少肿瘤负荷和骨质流失,且全身副作用更少。因此,BP-Btz 可能代表了治疗 MM 患者的一种新的治疗方法。
Multiple myeloma (MM) is the most common cancer affecting the bone and bone marrow and remains incurable for most patients; novel therapies are therefore needed. Bortezomib (Btz) is an FDA-approved drug for the treatment of patients with MM. However, its severe side effects require a dose reduction or the potential discontinuation of treatment. To overcome this limitation, we conjugated Btz to a bisphosphonate (BP) residue lacking anti-osteoclastic activity using a novel chemical linker and generated a new bone-targeted Btz-based (BP-Btz) proteasome inhibitor. We demonstrated that BP-Btz, but not Btz, bound to bone slices and inhibited the growth of MM cells in vitro. In a mouse model of MM, BP-Btz more effectively reduced tumor burden and bone loss with less systemic side effects than Btz. Thus, BP-Btz may represent a novel therapeutic approach to treat patients with MM.
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