Diet high in branched-chain amino acid promotes PDAC development by USP1-mediated BCAT2 stabilization.
Diet high in branched-chain amino acid promotes PDAC development by USP1-mediated BCAT2 stabilization.
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饮食中高的分支链氨基酸通过USP1介导的BCAT2稳定促进PDAC的发展。
DOI:
10.1093/nsr/nwab212
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发表时间:
2022-05
影响因子:
20.6
通讯作者:
中科院分区:
文献类型:
--
作者:
BCAT2-mediated branched-chain amino acid (BCAA) catabolism is critical for pancreatic ductal adenocarcinoma (PDAC) development, especially at an early stage. However, whether a high-BCAA diet promotes PDAC development in vivo, and the underlying mechanism of BCAT2 upregulation, remain undefined. Here, we find that a high-BCAA diet promotes pancreatic intraepithelial neoplasia (PanIN) progression in LSL-KrasG12D/+; Pdx1-Cre (KC) mice. Moreover, we screened with an available deubiquitylase library which contains 31 members of USP family and identified that USP1 deubiquitylates BCAT2 at the K229 site. Furthermore, BCAA increases USP1 protein at the translational level via the GCN2-eIF2α pathway both in vitro and in vivo. More importantly, USP1 inhibition recedes cell proliferation and clone formation in PDAC cells and attenuates pancreas tumor growth in an orthotopic transplanted mice model. Consistently, a positive correlation between USP1 and BCAT2 is found in KC; LSL-KrasG12D/+; p53flox/+; Pdx1-Cre mice and clinical samples. Thus, a therapeutic targeting USP1-BCAT2-BCAA metabolic axis could be considered as a rational strategy for treatment of PDAC and precisive dietary intervention of BCAA has potentially translational significance.
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DOI:
10.1126/science.aaw9872
发表时间:
2020-04-03
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
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Olive KP
影响因子:
14.8
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Zhuang, Zhihao
DOI:
10.18632/aging.202892
发表时间:
2021-04-21
期刊:
Aging
影响因子:
--
作者:
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通讯作者:
Fan H
影响因子:
39.3
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6.4
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