Article (Scientific journals)
A δ-cell subpopulation with pro-β cell identity contributes to efficient age-independent recovery in a zebrafish diabetes model.
Carril Pardo, Claudio Andrès; Massoz, Laura; Dupont, Marie et al.
2022In eLife, 11
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Keywords :
cell biology; zebrafish
Abstract :
[en] Restoring damaged b-cells in diabetic patients by harnessing the plasticity of other pancreatic cells raises the questions of the efficiency of the process and of the functionality of the new Insulin-expressing cells. To overcome the weak regenerative capacity of mammals, we used regeneration-prone zebrafish to study b-cells arising following destruction. We show that most new insulin cells differ from the original b-cells as they coexpress Somatostatin and Insulin. These bihormonal cells are abundant, functional and able to normalize glycemia. Their formation in response to b-cell destruction is fast, efficient and age-independent. Bihormonal cells are transcriptionally close to a subset of d-cells that we identified in control islets and which are characterized by the expression of somatostatin 1.1 (sst1.1) and by genes essential for glucose-induced Insulin secretion in β-cells such as pdx1, slc2a2 and gck. We observed in vivo the conversion of monohormonal sst1.1-expressing cells to sst1.1+ ins+ bihormonal cells following b-cell destruction. Our findings support the conclusion that sst1.1 d-cells possess a pro-b identity enabling them to contribute to the neogenesis of Insulin-producing cells during regeneration. This work unveils that abundant and functional bihormonal cells benefit to diabetes recovery in zebrafish.
Disciplines :
Anatomy (cytology, histology, embryology...) & physiology
Author, co-author :
Carril Pardo, Claudio Andrès ;  Université de Liège - ULiège > GIGA
Massoz, Laura  ;  Université de Liège - ULiège > GIGA Stem Cells - Zebrafish Dev. & Disease Model
Dupont, Marie ;  Université de Liège - ULiège > GIGA Stem Cells - Zebrafish Dev. & Disease Model
Bergemann, David 
Bourdouxhe, Jordane 
Lavergne, Arnaud  ;  Université de Liège - ULiège > GIGA Platform Genomics
Tarifeño Saldivia, Estefania 
Helker, Christian Sm
Stainier, Didier Yr True
Peers, Bernard ;  Université de Liège - ULiège > Département des sciences de la vie > GIGA Stem Cells - Zebrafish Dev. & Disease Model
Voz, Marianne  ;  Université de Liège - ULiège > GIGA Stem Cells - Zebrafish Dev. & Disease Model
Manfroid, Isabelle ;  Université de Liège - ULiège > GIGA Stem Cells - Zebrafish Dev. & Disease Model
Language :
English
Title :
A δ-cell subpopulation with pro-β cell identity contributes to efficient age-independent recovery in a zebrafish diabetes model.
Publication date :
2022
Journal title :
eLife
eISSN :
2050-084X
Publisher :
eLife Sciences Publications, United Kingdom
Volume :
11
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
© 2022, Carril Pardo et al.
Available on ORBi :
since 11 February 2022

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