Evidence mapPaperPMID 41812877Full record

ArticleThe Journal of biological chemistry2026

C-mannosyl tryptophan dynamics in a mouse model of the peritoneal dissemination of ovarian cancer.

Yoko Inai, Shiho Minakata, Kaya Tsujimoto, Shino Manabe, Naoyuki Iwahashi, Ryota Kamijo, Yuma Nakadaira, Keisuke Nishikawa, Tomohiro Hashizume, Kazuhiko Ino and 1 more

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Article in The Journal of biological chemistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

What it found

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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4 · The record

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5 · Who and what money

Authors and funding

11 authors.

Yoko InaiDepartment of Biochemistry, School of Medicine, Wakayama Medical University, Wakayama, Japan.
Shiho MinakataDepartment of Biochemistry, School of Medicine, Wakayama Medical University, Wakayama, Japan.
Kaya TsujimotoDepartment of Biochemistry, School of Medicine, Wakayama Medical University, Wakayama, Japan.
Shino ManabeSchool of Pharmacy and Pharmaceutical Sciences, Hoshi University, Tokyo, Japan; Research Center for Pharmaceutical Development, Graduate School of Pharmaceutical Science & Faculty of Pharmaceutical Sciences, Tohoku University, Miyagi, Japan.
Naoyuki IwahashiDepartment of Obstetrics and Gynecology, School of Medicine, Wakayama Medical University, Wakayama, Japan.
Ryota KamijoDepartment of Biochemistry, School of Medicine, Wakayama Medical University, Wakayama, Japan.
Yuma NakadairaDepartment of Biochemistry, School of Medicine, Wakayama Medical University, Wakayama, Japan.
Keisuke NishikawaDepartment of Biochemistry, School of Medicine, Wakayama Medical University, Wakayama, Japan.
Tomohiro HashizumeDepartment of Biochemistry, School of Medicine, Wakayama Medical University, Wakayama, Japan.
Kazuhiko InoDepartment of Obstetrics and Gynecology, School of Medicine, Wakayama Medical University, Wakayama, Japan.
Yoshito IharaDepartment of Biochemistry, School of Medicine, Wakayama Medical University, Wakayama, Japan. Electronic address: y-ihara@wakayama-med.ac.jp.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

C-Mannosyl tryptophan (C-Man-Trp), a unique monomeric glycosyl amino acid, is up-regulated in the blood of ovarian cancer patients; however, the underlying mechanisms remain unclear. In the present study, C-Man-Trp production and its dynamics were investigated in female B6C3F1 mice transplanted with mouse ovarian cancer OV2944-HM-1 (HM-1) cells. After transplantation, C-Man-Trp levels increased in the plasma, urine, ascites, peritoneal exudate cells (PECs), and tumor masses of mice. Furthermore, changes in the transcriptional expression of C-Man-Trp metabolism-related genes, C-mannosyltransferases (Dpy19l1 and Dpy19l3), and thrombospondin type I repeat superfamily genes (Thbs1, Spon1, and cellular communication network factor 1) were noted in tumor-associated cells and tissues. A cell-sorting analysis revealed that PECs mainly comprised myeloid-derived immune cells, such as macrophages and myeloid-derived suppressor cells, in addition to a small population of HM-1 tumor cells. C-Man-Trp levels were high in the macrophage fraction, but lower in the myeloid-derived suppressor cell fraction. C-Man-Trp was also produced in the ex vivo culture medium of macrophages isolated from PECs. Under macrophage depletion using clodronate liposomes, the ovarian cancer-stimulated up-regulation of C-Man-Trp was significantly suppressed in the plasma, ascites, PECs, and tumor masses of HM-1 cell-transplanted mice. C-Man-Trp levels in the plasma and peritoneal cavity cells of normal healthy mice were also suppressed by clodronate liposomes, whereas the expression of C-Man-Trp metabolism-related genes showed different changes from those in mice transplanted with HM-1 cells. Collectively, these results demonstrate that tumor-stimulated macrophages play a pivotal role in the dynamics of C-Man-Trp in mice with ovarian cancer.

Indexed as

Disease Models, AnimalMannoseOvarian NeoplasmsPeritoneal NeoplasmsTryptophanAnimalsCell Line, TumorFemaleHumansMiceMannoseTryptophanC-mannosylationC-mannosyl tryptophanglycosylationmacrophageovarian cancerpost-translational modification (PTM)protein degradationthrombospondin

Identifiers

PMID41812877
PMCPMC13066745

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.