Mucosal Single-Cell Profiling of Crohn’s-Like Disease of the Pouch Reveals Unique Pathogenesis and Therapeutic Targets

The pathophysiology of Crohn’s-like disease of the pouch (CDP) in patients with a history of ulcerative colitis (UC) is unknown. We examined mucosal cells from patients with and without CDP using single-cell analyses. Endoscopic samples were collected from pouch body and prepouch ileum (pouch/ileum)...

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Veröffentlicht in:Gastroenterology (New York, N.Y. 1943) N.Y. 1943), 2024-12, Vol.167 (7), p.1399-1414.e2
Hauptverfasser: Cao, Siyan, Nguyen, Khai M., Ma, Kaiming, Du, Xiaotang, Liu, Xiuli, Ulezko Antonova, Alina, Rood, Richard P., Gremida, Anas, Chen, Chien-Huan, Gutierrez, Alexandra, Rubin, Deborah C., Gregory, Martin H., Gergely, Mate, Escudero, Guadalupe Oliva, Huang, Katherine, Jaeger, Natalia, Cella, Marina, Newberry, Rodney D., Davidson, Nicholas O., Ciorba, Matthew A., Deepak, Parakkal, Colonna, Marco
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container_end_page 1414.e2
container_issue 7
container_start_page 1399
container_title Gastroenterology (New York, N.Y. 1943)
container_volume 167
creator Cao, Siyan
Nguyen, Khai M.
Ma, Kaiming
Du, Xiaotang
Liu, Xiuli
Ulezko Antonova, Alina
Rood, Richard P.
Gremida, Anas
Chen, Chien-Huan
Gutierrez, Alexandra
Rubin, Deborah C.
Gregory, Martin H.
Gergely, Mate
Escudero, Guadalupe Oliva
Huang, Katherine
Jaeger, Natalia
Cella, Marina
Newberry, Rodney D.
Davidson, Nicholas O.
Ciorba, Matthew A.
Deepak, Parakkal
Colonna, Marco
description The pathophysiology of Crohn’s-like disease of the pouch (CDP) in patients with a history of ulcerative colitis (UC) is unknown. We examined mucosal cells from patients with and without CDP using single-cell analyses. Endoscopic samples were collected from pouch body and prepouch ileum (pouch/ileum) of 50 patients with an ileal pouch-anal anastomosis. Single-cell RNA sequencing was performed on pouch/ileal tissues of patients with normal pouch/ileum and CDP. Mass cytometry was performed on mucosal immune cells from patients with UC with normal pouch/ileum, CDP, pouchitis, and those with familial adenomatous polyposis after pouch formation. Findings were independently validated using immunohistochemistry. The cell populations/states in the pouch body differed from those in the prepouch ileum, likely secondary to increased microbial burden. Compared with the familial adenomatous polyposis pouch, the UC pouch was enriched in colitogenic immune cells even without inflammation. CDP was characterized by increases in T helper 17 cells, inflammatory fibroblasts, inflammatory monocytes, TREM1+ monocytes, clonal expansion of effector T cells, and overexpression of T helper 17 cells–inducing cytokine genes such as IL23, IL1B, and IL6 by mononuclear phagocytes. Ligand-receptor analysis further revealed a stromal-mononuclear phagocytes-lymphocyte circuit in CDP. Integrated analysis showed that up-regulated immune mediators in CDP were similar to those in CD and pouchitis, but not UC. Additionally, CDP pouch/ileum exhibited heightened endoplasmic reticulum stress across all major cell compartments. CDP likely represents a distinct entity of inflammatory bowel disease with heightened endoplasmic reticulum stress in both immune and nonimmune cells, which may become a novel diagnostic biomarker and therapeutic target for CDP. [Display omitted] The pathophysiology of Crohn’s-like disease of the pouch in patients with a prior history of ulcerative colitis is revealed and new targets to better treat this challenging condition are identified.
doi_str_mv 10.1053/j.gastro.2024.07.025
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We examined mucosal cells from patients with and without CDP using single-cell analyses. Endoscopic samples were collected from pouch body and prepouch ileum (pouch/ileum) of 50 patients with an ileal pouch-anal anastomosis. Single-cell RNA sequencing was performed on pouch/ileal tissues of patients with normal pouch/ileum and CDP. Mass cytometry was performed on mucosal immune cells from patients with UC with normal pouch/ileum, CDP, pouchitis, and those with familial adenomatous polyposis after pouch formation. Findings were independently validated using immunohistochemistry. The cell populations/states in the pouch body differed from those in the prepouch ileum, likely secondary to increased microbial burden. Compared with the familial adenomatous polyposis pouch, the UC pouch was enriched in colitogenic immune cells even without inflammation. CDP was characterized by increases in T helper 17 cells, inflammatory fibroblasts, inflammatory monocytes, TREM1+ monocytes, clonal expansion of effector T cells, and overexpression of T helper 17 cells–inducing cytokine genes such as IL23, IL1B, and IL6 by mononuclear phagocytes. Ligand-receptor analysis further revealed a stromal-mononuclear phagocytes-lymphocyte circuit in CDP. Integrated analysis showed that up-regulated immune mediators in CDP were similar to those in CD and pouchitis, but not UC. Additionally, CDP pouch/ileum exhibited heightened endoplasmic reticulum stress across all major cell compartments. CDP likely represents a distinct entity of inflammatory bowel disease with heightened endoplasmic reticulum stress in both immune and nonimmune cells, which may become a novel diagnostic biomarker and therapeutic target for CDP. 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CDP was characterized by increases in T helper 17 cells, inflammatory fibroblasts, inflammatory monocytes, TREM1+ monocytes, clonal expansion of effector T cells, and overexpression of T helper 17 cells–inducing cytokine genes such as IL23, IL1B, and IL6 by mononuclear phagocytes. Ligand-receptor analysis further revealed a stromal-mononuclear phagocytes-lymphocyte circuit in CDP. Integrated analysis showed that up-regulated immune mediators in CDP were similar to those in CD and pouchitis, but not UC. Additionally, CDP pouch/ileum exhibited heightened endoplasmic reticulum stress across all major cell compartments. CDP likely represents a distinct entity of inflammatory bowel disease with heightened endoplasmic reticulum stress in both immune and nonimmune cells, which may become a novel diagnostic biomarker and therapeutic target for CDP. 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CDP was characterized by increases in T helper 17 cells, inflammatory fibroblasts, inflammatory monocytes, TREM1+ monocytes, clonal expansion of effector T cells, and overexpression of T helper 17 cells–inducing cytokine genes such as IL23, IL1B, and IL6 by mononuclear phagocytes. Ligand-receptor analysis further revealed a stromal-mononuclear phagocytes-lymphocyte circuit in CDP. Integrated analysis showed that up-regulated immune mediators in CDP were similar to those in CD and pouchitis, but not UC. Additionally, CDP pouch/ileum exhibited heightened endoplasmic reticulum stress across all major cell compartments. CDP likely represents a distinct entity of inflammatory bowel disease with heightened endoplasmic reticulum stress in both immune and nonimmune cells, which may become a novel diagnostic biomarker and therapeutic target for CDP. [Display omitted] The pathophysiology of Crohn’s-like disease of the pouch in patients with a prior history of ulcerative colitis is revealed and new targets to better treat this challenging condition are identified.</abstract><cop>United States</cop><pub>Elsevier Inc</pub><pmid>39084267</pmid><doi>10.1053/j.gastro.2024.07.025</doi><oa>free_for_read</oa></addata></record>
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subjects Adenomatous Polyposis Coli - genetics
Adenomatous Polyposis Coli - immunology
Adenomatous Polyposis Coli - pathology
Adenomatous Polyposis Coli - surgery
Adult
Colitis, Ulcerative - immunology
Colitis, Ulcerative - pathology
Colitis, Ulcerative - surgery
Colonic Pouches - adverse effects
Crohn Disease - immunology
Crohn Disease - pathology
CyTOF
Female
Humans
IBD
Ileum - immunology
Ileum - pathology
Ileum - surgery
Intestinal Mucosa - immunology
Intestinal Mucosa - pathology
IPAA
Male
Middle Aged
Pouch
Pouchitis - etiology
Pouchitis - immunology
Pouchitis - pathology
Proctocolectomy, Restorative - adverse effects
RNA-Seq
scRNA-seq
Single-Cell Analysis
Th17 Cells - immunology
title Mucosal Single-Cell Profiling of Crohn’s-Like Disease of the Pouch Reveals Unique Pathogenesis and Therapeutic Targets
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