Oyajobi Babatunde O, Garrett I Ross, Gupta Anjana, Flores Alda, Esparza Javier, Muñoz Steve, Zhao Ming, Mundy Gregory R
Department of Cellular and Structural Biology, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA.
Br J Haematol. 2007 Nov;139(3):434-8. doi: 10.1111/j.1365-2141.2007.06829.x.
Impaired bone formation contributes to the lack of bone healing in multiple myeloma and there is a need for agents with bone anabolic properties to reverse the bone deficit in patients. Bortezomib, a proteasome inhibitor with antitumour efficacy in myeloma patients, enhanced new bone formation in mouse calvarial cultures; this effect was blocked by dickkopf 1(Dkk1), an antagonist of Wnt signalling implicated in myeloma bone disease. Bortezomib inhibited Dkk1 expression in calvariae and bone marrow-derived stromal cells, suggesting a novel mechanism by which bortezomib exerts its effects in bone. Clinical trials in patients with myeloma bone disease are needed to validate these results.
骨形成受损导致多发性骨髓瘤患者骨愈合不足,因此需要具有骨合成代谢特性的药物来逆转患者的骨缺损。硼替佐米是一种对骨髓瘤患者具有抗肿瘤疗效的蛋白酶体抑制剂,可增强小鼠颅骨培养物中的新骨形成;这种作用被Dickkopf 1(Dkk1)阻断,Dkk1是一种参与骨髓瘤骨病的Wnt信号拮抗剂。硼替佐米抑制颅骨和骨髓来源的基质细胞中Dkk1的表达,提示硼替佐米在骨中发挥作用的一种新机制。需要对骨髓瘤骨病患者进行临床试验以验证这些结果。