RT Journal Article SR Electronic T1 Antitumor Effect of Galectin-9 on Cell Proliferation and Tumor Growth of Human Duodenal Adenocarcinoma Cells JF Anticancer Research JO Anticancer Res FD International Institute of Anticancer Research SP 3769 OP 3777 DO 10.21873/anticanres.16562 VO 43 IS 8 A1 KONO, TOSHIAKI A1 FUJIHARA, SHINTARO A1 OURA, KYOKO A1 IWAMA, HISAKAZU A1 FUJITA, KOJI A1 FUJITA, NAOKI A1 TAKUMA, KEI A1 ONO, MASAHIRO A1 NAMIMA, DAISUKE A1 YAMANA, HIROKI A1 CHIYO, TAIGA A1 KOBAYASHI, KIYOYUKI A1 KAMADA, HIDEKI A1 KOBARA, HIDEKI A1 ONO, MASAHUMI A1 NIKI, TOSHIRO A1 HIRASHIMA, MITSUOMI A1 MASAKI, TSUTOMU YR 2023 UL http://ar.iiarjournals.org/content/43/8/3769.abstract AB Background/Aim: Galectin-9 (Gal-9) induces tumor cell apoptosis in lymphoma and other malignant cell types. Duodenal adenocarcinoma is a rare malignancy, and there are insufficient data to determine a standard therapeutic approach. Here, we investigated the antitumor effect of Gal-9 in HuTu-80 duodenal adenocarcinoma cells. Materials and Methods: Cell proliferation was examined in HuTu-80 cells using a Cell Counting Kit-8 assay. Cell cycle analysis, apoptosis array, and microRNA expression analysis were performed to identify the effect of Gal-9 on HuTu-80 cells. The antitumor effect of Gal-9 was also examined using xenograft mouse models. Results: Gal-9 suppressed the proliferation of HuTu-80 via blockade of the G0 to G1 cell cycle transition. This blockade was accompanied by a strong decrease in cyclin D1 and phosphorylated Rb, suggesting a G1 arrest. Additionally, Gal-9 induced apoptosis, and the expression of cleaved caspase-3 was increased in Gal-9-treated HuTu-80 cells according to the apoptosis array. MiRNA microarrays revealed that Gal-9 altered the expression of miRNAs in HuTu-80 cells. Conclusion: These data demonstrate the therapeutic potential of Gal-9 and provide molecular mechanistic insights into its antitumor effect in HuTu-80 cells.