TY - JOUR
T1 - A novel intraperitoneal metastatic xenograft mouse model for survival outcome assessment of esophageal adenocarcinoma
AU - Hassan, Md Sazzad
AU - Awasthi, Niranjan
AU - Li, Jun
AU - Schwarz, Margaret A.
AU - Schwarz, Roderich E.
AU - Von Holzen, Urs
N1 - Publisher Copyright:
© 2017 Hassan et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
PY - 2017/2
Y1 - 2017/2
N2 - Esophageal adenocarcinoma (EAC) has become the dominant type of esophageal cancer in United States. The 5-year survival rate of EAC is below 20% and most patients present with locally advanced or widespread metastatic disease, where current treatment is largely ineffective. Therefore, new therapeutic approaches are urgently needed. Improvement of EAC patient outcome requires well-characterized animal models in which to evaluate novel therapeutics. In this study we aimed to establish a peritoneal dissemination xenograft mouse model of EAC that would support survival outcome analyses. To find the best candidate cell line from 7 human EAC cell lines of different origin named ESO26, OE33, ESO51, SK-GT-2, OE19, OACM5.1C and Flo-1 were injected intraperitoneally/subcutaneously into SCID mice. The peritoneal/xenograft tumor formation and mouse survival were compared among different groups. All cell lines injected subcutaneously formed tumors within 3 months at variable rates. All cell lines except OACM5.1C formed intraperitoneal tumors within 3 months at variable rates. Median animal survival with peritoneal dissemination was 108 days for ESO26 cells (5×106), 65 days for OE33 cells (5×106), 88 days for ESO51 cells (5×106), 76 days for SK-GT-2 cells (5×106), 55 days for OE19 cells (5×106), 45 days for OE19 cells (10×106) and 82 days for Flo-1 cells (5×106). Interestingly, only in the OE19 model all mice (7/7 for 5×106 and 5/5 for 10×106) developed bloody ascites with liver metastasis after intraperitoneal injection. The median survival time of these animals was the shortest (45 days for 10×106 cells). In addition, median survival was significantly increased after paclitaxel treatment compared with the control group (57 days versus 45 days, p = 0.0034) along with a significant decrease of the relative subcutaneous tumor volume (p = 0.00011). Thus peritoneal dissemination mouse xenograft model for survival outcome assessment after intraperitoneal injection of OE19 cells will be very useful for the evaluation of cancer therapeutics.
AB - Esophageal adenocarcinoma (EAC) has become the dominant type of esophageal cancer in United States. The 5-year survival rate of EAC is below 20% and most patients present with locally advanced or widespread metastatic disease, where current treatment is largely ineffective. Therefore, new therapeutic approaches are urgently needed. Improvement of EAC patient outcome requires well-characterized animal models in which to evaluate novel therapeutics. In this study we aimed to establish a peritoneal dissemination xenograft mouse model of EAC that would support survival outcome analyses. To find the best candidate cell line from 7 human EAC cell lines of different origin named ESO26, OE33, ESO51, SK-GT-2, OE19, OACM5.1C and Flo-1 were injected intraperitoneally/subcutaneously into SCID mice. The peritoneal/xenograft tumor formation and mouse survival were compared among different groups. All cell lines injected subcutaneously formed tumors within 3 months at variable rates. All cell lines except OACM5.1C formed intraperitoneal tumors within 3 months at variable rates. Median animal survival with peritoneal dissemination was 108 days for ESO26 cells (5×106), 65 days for OE33 cells (5×106), 88 days for ESO51 cells (5×106), 76 days for SK-GT-2 cells (5×106), 55 days for OE19 cells (5×106), 45 days for OE19 cells (10×106) and 82 days for Flo-1 cells (5×106). Interestingly, only in the OE19 model all mice (7/7 for 5×106 and 5/5 for 10×106) developed bloody ascites with liver metastasis after intraperitoneal injection. The median survival time of these animals was the shortest (45 days for 10×106 cells). In addition, median survival was significantly increased after paclitaxel treatment compared with the control group (57 days versus 45 days, p = 0.0034) along with a significant decrease of the relative subcutaneous tumor volume (p = 0.00011). Thus peritoneal dissemination mouse xenograft model for survival outcome assessment after intraperitoneal injection of OE19 cells will be very useful for the evaluation of cancer therapeutics.
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U2 - 10.1371/journal.pone.0171824
DO - 10.1371/journal.pone.0171824
M3 - Article
C2 - 28225784
AN - SCOPUS:85013412152
SN - 1932-6203
VL - 12
JO - PloS one
JF - PloS one
IS - 2
M1 - e0171824
ER -