LSD1 represses a neonatal/reparative gene program in adult intestinal epithelium

R.T. Zwiggelaar, H.T. Lindholm, M. Fosslie, M.T. Pedersen, Y. Ohta, A. Díez-Sánchez, M. Martín-Alonso, J. Ostrop, M. Matano, N. Parmar, E. Kvaløy, R.R. Spanjers, K. Nazmi, M. Rye, F. Drabløs, C. Arrowsmith, J.A. Dahl, K.B. Jensen, T. Sato, M.J. Oudhoff

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

Intestinal epithelial homeostasis is maintained by adult intestinal stem cells, which, alongside Paneth cells, appear after birth in the neonatal period. We aimed to identify regulators of neonatal intestinal epithelial development by testing a small library of epigenetic modifier inhibitors in Paneth cell–skewed organoid cultures. We found that lysine-specific demethylase 1A (Kdm1a/Lsd1) is absolutely required for Paneth cell differentiation. Lsd1-deficient crypts, devoid of Paneth cells, are still able to form organoids without a requirement of exogenous or endogenous Wnt. Mechanistically, we find that LSD1 enzymatically represses genes that are normally expressed only in fetal and neonatal epithelium. This gene profile is similar to what is seen in repairing epithelium, and we find that Lsd1-deficient epithelium has superior regenerative capacities after irradiation injury. In summary, we found an important regulator of neonatal intestinal development and identified a druggable target to reprogram intestinal epithelium toward a reparative state.

Original languageEnglish
Article numbereabc0367
Number of pages14
JournalScience advances
Volume6
Issue number37
DOIs
Publication statusPublished - 11 Sep 2020

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