Acinar cell clonal expansion in pancreas homeostasis and carcinogenesis.
Acinar cell clonal expansion in pancreas homeostasis and carcinogenesis.
复制标题
胰腺内环境稳定和癌变过程中腺泡细胞克隆性扩增。
DOI:
10.1038/s41586-021-03916-2
复制
发表时间:
2021-09
期刊:
影响因子:
64.8
通讯作者:
中科院分区:
文献类型:
--
作者:
Pancreatic ductal adenocarcinoma (PDAC) is one of the leading causes of cancer deaths worldwide. Studies in human tissues and in mouse models have suggested that for many cancers, stem cells sustain early mutations driving tumour development. For the pancreas, however, mechanisms underlying cellular renewal and initiation of PDAC remain unresolved. Here, using lineage tracing from the endogenous telomerase reverse transcriptase (Tert) locus, we identify a rare TERT-positive subpopulation of pancreatic acinar cells dispersed throughout the exocrine compartment. During homeostasis, these TERThigh acinar cells renew the pancreas by forming expanding clones of acinar cells, whereas randomly marked acinar cells do not form these clones. Specific expression of mutant Kras in TERThigh acinar cells accelerates acinar clone formation and causes transdifferentiation to ductal pre-invasive pancreatic intraepithelial neoplasms by upregulating Ras–MAPK signalling and activating the downstream kinase ERK (phospho-ERK). In resected human pancreatic neoplasms, we find that foci of phospho-ERK-positive acinar cells are common and frequently contain activating KRAS mutations, suggesting that these acinar regions represent an early cancer precursor lesion. These data support a model in which rare TERThigh acinar cells may sustain KRAS mutations, driving acinar cell expansion and creating a field of aberrant cells initiating pancreatic tumorigenesis.
登录
查看更多内容
影响因子:
30.8
作者:
Busque L;Patel JP;Figueroa ME;Vasanthakumar A;Provost S;Hamilou Z;Mollica L;Li J;Viale A;Heguy A;Hassimi M;Socci N;Bhatt PK;Gonen M;Mason CE;Melnick A;Godley LA;Brennan CW;Abdel-Wahab O;Levine RL
通讯作者:
Levine RL
DOI:
10.1126/science.aau3879
发表时间:
2018-11-23
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Martincorena I;Fowler JC;Wabik A;Lawson ARJ;Abascal F;Hall MWJ;Cagan A;Murai K;Mahbubani K;Stratton MR;Fitzgerald RC;Handford PA;Campbell PJ;Saeb-Parsy K;Jones PH
通讯作者:
Jones PH
影响因子:
16.6
作者:
Lee J;Snyder ER;Liu Y;Gu X;Wang J;Flowers BM;Kim YJ;Park S;Szot GL;Hruban RH;Longacre TA;Kim SK
通讯作者:
Kim SK
DOI:
10.1073/pnas.0810111105
发表时间:
2008-12-02
影响因子:
11.1
作者:
Jean-Paul, De La O.;Emerson, Lyska L.;Murtaugh, L. Charles
通讯作者:
Murtaugh, L. Charles
DOI:
10.1038/nrc3106
发表时间:
2011-10-13
期刊:
Nature reviews. Cancer
影响因子:
--
作者:
通讯作者:
--