PT  - JOURNAL ARTICLE
AU  - ITO, YUKAKO
AU  - INOUE, ERIKO
AU  - MATSUI, YUKI
AU  - KOBUCHI, SHINJI
AU  - MOYAMA, CHIAMI
AU  - AMAGASE, KIKUKO
AU  - YOSHIMURA, MAYUMI
AU  - IKEHARA, YUZURU
AU  - NAKATA, SUSUMU
AU  - NAKANISHI, HAYAO
TI  - Cytology-based Detection of Circulating Tumour Cells in Human Pancreatic Cancer Xenograft Models With <em>KRAS</em> Mutation
AID  - 10.21873/anticanres.14701
DP  - 2020 Dec 01
TA  - Anticancer Research
PG  - 6781--6789
VI  - 40
IP  - 12
4099  - http://ar.iiarjournals.org/content/40/12/6781.short
4100  - http://ar.iiarjournals.org/content/40/12/6781.full
SO  - Anticancer Res2020 Dec 01; 40
AB  - Background/Aim: To examine the dynamics of circulating tumour cells (CTCs) in pancreatic cancer (PC), new mouse CTC models from human PC xenografts were developed. Materials and Methods: Orthotopic (pancreas) and heterotopic (subcutaneous) transplantation models using GFP-tagged SUIT-2 PC cells were prepared. Using a cytology-based CTC detection platform, CTCs and metastasis were compared. Results: The two types of orthotopic models, including the surgical transplantation model and the intraperitoneal injection model, showed a similar pattern of initial pancreatic tumour formation and subsequent development of peritoneal and hematogenous lung metastases. In the heterotopic model, only hematogenous lung metastasis was observed, and the number of CTCs and lung metastases was higher than that of the orthotopic model. Furthermore, KRAS mutation (G12D) was detected in CTCs. Conclusion: These orthotopic and heterotopic models clearly differ in terms of the pattern of metastasis and CTCs and therefore, would be useful PC models to investigate the effect of drug-therapy on CTCs and the role of KRAS mutation.