RT Journal Article
SR Electronic
T1 Epithelial–Mesenchymal Transition Phenotype and Peritumoral Immune Cell Infiltration in Advanced Biliary Tract Cancer
JF Anticancer Research
JO Anticancer Res
FD International Institute of Anticancer Research
SP 645
OP 652
DO 10.21873/anticanres.16201
VO 43
IS 2
A1 OH, CHUNG RYUL
A1 KIM, HYUNG-DON
A1 RYU, YEON-MI
A1 LEE, SEONMIN
A1 KIM, DANBEE
A1 LEE, DA SOL
A1 JEONG, JAE HO
A1 CHANG, HEUNG-MOON
A1 RYOO, BAEK-YEOL
A1 KIM, KYU-PYO
A1 KIM, MIYEON
A1 KIM, SANG-YEOB
A1 YOO, CHANGHOON
YR 2023
UL http://ar.iiarjournals.org/content/43/2/645.abstract
AB Background/Aim: This study evaluated the clinical implications of epithelial–mesenchymal transition (EMT) markers and peritumoral immune cell infiltration in patients with biliary tract cancer (BTC) treated with gemcitabine plus cisplatin (GemCis). Materials and Methods: Forty-five patients with advanced BTC who received GemCis were included as the study population. We conducted multiplex immunohistochemistry and examined EMT markers and their correlations with immune cell infiltrate at the invasive tumor margin. Study population was subdivided into two groups: twenty-four patients with overall survival (OS) less than 10 months (short-term survivor group, SS) and 21 with OS of 20 months or longer (long-term survivor group, LS). Results: The density of tumor cells expressing epithelial marker E-cadherin (E-cadherin+ CK+) at the invasive tumor margin tended to be higher in the LS group than that in the SS group (p=0.065). The density of tumor cells expressing mesenchymal marker vimentin (vimentin+ CK+) was significantly higher in the SS group than that in the LS group (p=0.021). The density of E-cadherin- vimentin+ tumor cells (E-cadherin- vimentin+ CK+) was also significantly higher in the SS group (p=0.020). The density of OX40 expressing cells was significantly higher in the SS group compared to that in the LS group (p=0.006). The density of vimentin-expressing tumor cells was positively correlated with FoxP3+ CD4+ regulatory T-cells (r=0.29, p=0.047) and OX40+ cells (r=0.48, p<0.001). Conclusion: EMT-related features were enriched in BTC patients with poor survival outcomes and associated with regulatory T-cell infiltration.