In vivo screen identifies a SIK inhibitor that induces β cell proliferation through a transient UPR.
In vivo screen identifies a SIK inhibitor that induces β cell proliferation through a transient UPR.
复制标题
DOI:
10.1038/s42255-021-00391-x
复制
发表时间:
2021-05
影响因子:
20.8
通讯作者:
Andersson, Olov
中科院分区:
文献类型:
--
作者:
Charbord, Jeremie;Ren, Lipeng;Sharma, Rohit B.;Johansson, Anna;Agren, Rasmus;Chu, Lianhe;Tworus, Dominika;Schulz, Nadja;Charbord, Pierre;Stewart, Andrew F.;Wang, Peng;Alonso, Laura C.;Andersson, Olov
It is known that β cell proliferation expands the β cell mass during development and under certain hyperglycemic conditions in the adult, a process that may be used for β cell regeneration in diabetes. Here, through a new high-throughput screen using a luminescence ubiquitination-based cell cycle indicator (LUCCI) in zebrafish, we identify HG-9-91-01 as a driver of proliferation and confirm this effect in mouse and human β cells. HG-9-91-01 is an inhibitor of salt-inducible kinases (SIKs), and overexpression of Sik1 specifically in β cells blocks the effect of HG-9-91-01 on β cell proliferation. Single-cell transcriptomic analyses of mouse β cells demonstrate that HG-9-91-01 induces a wave of activating transcription factor (ATF)6-dependent unfolded protein response (UPR) before cell cycle entry. Importantly, the UPR wave is not associated with an increase in insulin expression. Additional mechanistic studies indicate that HG-9-91-01 induces multiple signalling effectors downstream of SIK inhibition, including CRTC1, CRTC2, ATF6, IRE1 and mTOR, which integrate to collectively drive β cell proliferation.
登录
查看更多内容
DOI:
10.1038/nrm3072
发表时间:
2011-03
期刊:
Nature reviews. Molecular cell biology
影响因子:
--
作者:
通讯作者:
--
影响因子:
4.3
作者:
Blandino-Rosano, Manuel;Chen, Angela Y.;Bernal-Mizrachi, Ernesto
通讯作者:
Bernal-Mizrachi, Ernesto
影响因子:
1.5
作者:
Adachi, Yusuke;Yamamoto, Keisuke;Mori, Kazutoshi
通讯作者:
Mori, Kazutoshi
影响因子:
5.3
作者:
Hussain, Mehboob A.;Porras, Delia L.;Wondisford, Fredric E.
通讯作者:
Wondisford, Fredric E.
影响因子:
64.8
作者:
Dor, Y;Brown, J;Melton, DA
通讯作者:
Melton, DA