Haruka Okami, Naoya Ozawa, Makoto Sohda, Takehiko Yokobori, Katsuya Osone, Bilguun Erkhem-Ochir, Gendensuren Dorjkhorloo, Takuya Shiraishi, Takuhisa Okada, Akihiko Sano, Makoto Sakai, Tatsuya Miyazaki, Hiroomi Ogawa, Takashi Yao, Takahiro Oike, Hiro Sato, Ken Shirabe, Atsushi Shibata, Hiroshi Saeki
Human leukocyte antigen class I (HLA-I) is considered a genetic pathogen for ulcerative colitis (UC). This study aimed to investigate the significance of DNA damage and HLA-I expression in infiltrating immune cells and immune checkpoint protein PD-L1 expression in dysplasia/colitic cancer (CC) and sporadic colorectal cancer (SCRC). We performed immunohistochemical staining for HLA-I, PD-L1, γH2AX (DNA damage marker), and immune cell markers such as CD8, FOXP3, CD68, and CD163 (in surgically resected specimens from 17 SCRC patients with 12 adjacent normal mucosa (NM) and 9 UC patients with 18 dysplasia/CC tumors...
September 4, 2023: International Journal of Molecular Sciences