Specificity of TGF-β1 signal designated by LRRC33 and integrin α(V)β(8).
Specificity of TGF-β1 signal designated by LRRC33 and integrin α(V)β(8).
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LRRC33 和整合素 αVβ8 指定的 TGF-β1 信号的特异性
DOI:
10.1038/s41467-022-32655-9
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发表时间:
2022-08-25
影响因子:
16.6
通讯作者:
Zhang, Zhe
中科院分区:
文献类型:
--
作者:
Duan, Zelin;Lin, Xuezhen;Wang, Lixia;Zhen, Qiuxin;Jiang, Yuefeng;Chen, Chuxin;Yang, Jing;Lee, Chia-Hsueh;Qin, Yan;Li, Ying;Zhao, Bo;Wang, Jianchuan;Zhang, Zhe
Myeloid lineage cells present the latent form of transforming growth factor-β1 (L-TGF-β1) to the membrane using an anchor protein LRRC33. Integrin αVβ8 activates extracellular L-TGF-β1 to trigger the downstream signaling functions. However, the mechanism designating the specificity of TGF-β1 presentation and activation remains incompletely understood. Here, we report cryo-EM structures of human L-TGF-β1/LRRC33 and integrin αVβ8/L-TGF-β1 complexes. Combined with biochemical and cell-based analyses, we demonstrate that LRRC33 only presents L-TGF-β1 but not the -β2 or -β3 isoforms due to difference of key residues on the growth factor domains. Moreover, we reveal a 2:2 binding mode of integrin αVβ8 and L-TGF-β1, which shows higher avidity and more efficient L-TGF-β1 activation than previously reported 1:2 binding mode. We also uncover that the disulfide-linked loop of the integrin subunit β8 determines its exquisite affinity to L-TGF-β1. Together, our findings provide important insights into the specificity of TGF-β1 signaling achieved by LRRC33 and integrin αVβ8. Microenvironment localization and activation of L-TGF-β1 determine its specific function. Here, the authors elucidated the underlying mechanisms of specific presentation of L-TGF-β1 on the surface of myeloid lineage cells designated by LRRC33, and its activation by integrin αVβ8.
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影响因子:
7.2
作者:
Hinck AP;Mueller TD;Springer TA
通讯作者:
Springer TA
影响因子:
16.8
作者:
Dong, Xianchi;Hudson, Nathan E.;Springer, Timothy A.
通讯作者:
Springer, Timothy A.
影响因子:
30.8
作者:
KAARTINEN, V;VONCKEN, JW;GROFFEN, J
通讯作者:
GROFFEN, J
DOI:
10.1107/s0907444909052925
发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
Zwart PH
影响因子:
14.8
作者:
通讯作者:
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