Thymidine phosphorylase exerts complex effects on bone resorption and formation in myeloma.
Thymidine phosphorylase exerts complex effects on bone resorption and formation in myeloma.
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胸苷磷酸化酶对骨髓瘤的骨吸收和形成产生复杂的影响。
DOI:
10.1126/scitranslmed.aad8949
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发表时间:
2016-08-24
影响因子:
17.1
通讯作者:
Yang J
中科院分区:
文献类型:
--
作者:
Liu H;Liu Z;Du J;He J;Lin P;Amini B;Starbuck MW;Novane N;Shah JJ;Davis RE;Hou J;Gagel RF;Yang J
Myelomatous bone disease is characterized by the development of lytic bone lesions and a concomitant reduction in bone formation, leading to chronic bone pain and fractures. To understand the underlying mechanism, we investigated the contribution of myeloma-expressed thymidine phosphorylase (TP) to bone lesions. In osteoblast progenitors, TP upregulated the methylation of RUNX2 and osterix, leading to decreased bone formation. In osteoclast progenitors, TP upregulated the methylation of IRF8, thereby enhanced expression of NFATc1, leading to increased bone resorption. TP reversibly catalyzes thymidine into thymine and 2DDR. Myeloma-secreted 2DDR bound to integrin αVβ3/α5β1 in the progenitors, activated PI3K/Akt signaling, and increased DNMT3A expression, resulting in hypermethylation of RUNX2, osterix, and IRF8. This study elucidates an important mechanism for myeloma-induced bone lesions, suggesting that targeting TP may be a viable approach to healing resorbed bone in patients. As TP overexpression is common in bone-metastatic tumors, our findings could have additional mechanistic implications.
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影响因子:
3.8
作者:
GARRETT, ER;BLANCH, J;SEYDEL, JK
通讯作者:
SEYDEL, JK
影响因子:
4.7
作者:
Majid, Shahana;Dar, Altaf A.;Dahiya, Rajvir
通讯作者:
Dahiya, Rajvir
影响因子:
3.7
作者:
Aranda P;Agirre X;Ballestar E;Andreu EJ;Román-Gómez J;Prieto I;Martín-Subero JI;Cigudosa JC;Siebert R;Esteller M;Prosper F
通讯作者:
Prosper F
影响因子:
5.4
作者:
Liu CL;Lim YP;Hu ML
通讯作者:
Hu ML
影响因子:
4.8
作者:
Chen, Chia-Chun;Chen, Lih-Chyang;Chang, Yu-Sun
通讯作者:
Chang, Yu-Sun