Abstract:
:Gastric cancer displays marked molecular heterogeneity with aggressive behavior and treatment resistance. Therefore, good in vitro models that encompass unique subtypes are urgently needed for precision medicine development. Here, we have established a primary gastric cancer organoid (GCO) biobank that comprises normal, dysplastic, cancer, and lymph node metastases (n = 63) from 34 patients, including detailed whole-exome and transcriptome analysis. The cohort encompasses most known molecular subtypes (including EBV, MSI, intestinal/CIN, and diffuse/GS, with CLDN18-ARHGAP6 or CTNND1-ARHGAP26 fusions or RHOA mutations), capturing regional heterogeneity and subclonal architecture, while their morphology, transcriptome, and genomic profiles remain closely similar to in vivo tumors, even after long-term culture. Large-scale drug screening revealed sensitivity to unexpected drugs that were recently approved or in clinical trials, including Napabucasin, Abemaciclib, and the ATR inhibitor VE-822. Overall, this new GCO biobank, with linked genomic data, provides a useful resource for studying both cancer cell biology and precision cancer therapy.
journal_name
Cell Stem Celljournal_title
Cell stem cellauthors
Yan HHN,Siu HC,Law S,Ho SL,Yue SSK,Tsui WY,Chan D,Chan AS,Ma S,Lam KO,Bartfeld S,Man AHY,Lee BCH,Chan ASY,Wong JWH,Cheng PSW,Chan AKW,Zhang J,Shi J,Fan X,Kwong DLW,Mak TW,Yuen ST,Clevers H,Leung SYdoi
10.1016/j.stem.2018.09.016subject
Has Abstractpub_date
2018-12-06 00:00:00pages
882-897.e11issue
6eissn
1934-5909issn
1875-9777pii
S1934-5909(18)30480-6journal_volume
23pub_type
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