Corrigendum: Surgical Rates for Crohn's Disease Are Decreasing: A Population-Based Time Trend Analysis and Validation Study

Ma, Chengbin; Moran, Gordon W; Benchimol, Eric I.; Targownik, Laura E.; Heitman, Steven J.; Hubbard, James; Seow, Cynthia H.; Novak, Kerri L.; Ghosh, Subrata; Panaccione, Remo; Kaplan, Gilaad G.

doi:10.1038/ajg.2017.468

Cited by 5 publications

(1 citation statement)

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“…However, there is emerging data to support that anti-TNF therapies are effective in controlling the inflammation but not effective in preventing the development of a stricturing phenotype or disease progression, which are the two main complications of CD that often require surgical resection. 2 Even newer biologic therapies offer relief in only a minority of patients. Thus, there is an urgent need for the development of newer treatments targeting different pathways and cell types.…”

Section: Introductionmentioning

confidence: 99%

Ileal derived organoids from Crohn’s disease patients show unique transcriptomic and secretomic signatures

Niklinska-Schirtz

Venkateswaran

Anbazhagan

et al. 2021

Preprint

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Background: We used patient derived organoids (PDOs) to study the epithelial-specific transcriptional and secretome signatures of the ileum during CD with varying phenotypes to screen for disease profiles and potential druggable targets. Methods: RNA sequencing was performed on isolated intestinal crypts and 3-week-old PDOs derived from ileal biopsies of CD patients (n= 8 B1, inflammatory; n= 8 B2, stricturing disease) and non-IBD controls (n= 13). Differentially expressed (DE) genes were identified by comparing CD vs control, B1 vs B2, and inflamed vs non-inflamed. DE genes were used for computational screening to find candidate small molecules that could potentially reverse B1and B2 gene signatures. The secretome of a second cohort (n= 6 non-IBD controls, n=7 CD; 5 non-inflamed, 2 inflamed) was tested by Luminex using cultured organoid conditioned media. Results: We found a 90% similarity in both the identity and abundance of protein coding genes between PDOs and intestinal crypts (15,554 transcripts of 19,900 genes). DE analysis identified 814 genes among disease group (CD vs non-IBD control), 470 genes different between the CD phenotypes, and 5 FDR significant genes between inflamed and non-inflamed CD. The PDOs showed both similarity and diversity in the levels and types of soluble cytokines and growth factors they released. Perturbagen analysis revealed potential candidate compounds to reverse B2 disease phenotype to B1 in PDOs. Conclusion: PDOs are similar at the transcriptome level with the in vivo epithelium and retain disease-specific gene expression for which we have identified secretome products, druggable targets and corresponding pharmacological agents. Targeting the epithelium could reverse a stricturing phenotype and improve outcomes.

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Section: Introductionmentioning

confidence: 99%