PMID- 33129508 OWN - NLM STAT- MEDLINE DCOM- 20210624 LR - 20210624 IS - 1531-5037 (Electronic) IS - 0022-3468 (Linking) VI - 56 IP - 1 DP - 2021 Jan TI - Human amniotic fluid stem cells attenuate cholangiocyte apoptosis in a bile duct injury model of liver ductal organoids. PG - 11-16 LID - S0022-3468(20)30692-8 [pii] LID - 10.1016/j.jpedsurg.2020.09.043 [doi] AB - PURPOSE: Biliary atresia (BA) is a fibro-obliterative cholangiopathy that involves both extrahepatic and intrahepatic bile ducts in infants. Cholangiocyte apoptosis has an influence on the fibrogenesis process of bile ducts and the progression of liver fibrosis in BA. Human amniotic fluid stem cells (hAFSCs) are multipotent cells that have ability to inhibit cell apoptosis. We aimed to investigate whether hAFSCs have the potential to attenuate cholangiocyte apoptosis and injury induced fibrogenic response in our ex vivo bile duct injury model of liver ductal organoids. METHODS: The anti-apoptotic effect of hAFSCs was tested in the acetaminophen-induced injury model of neonatal mouse liver ductal organoids (AUP #42681) by using direct and indirect co-culture systems. Cell apoptosis and proliferation were evaluated by immunofluorescent staining. Expression of fibrogenic cytokines was analyzed by RT-qPCR. Data were compared using one-way ANOVA with post hoc test. RESULTS: In our injury model, liver ductal organoids that were treated with hAFSCs in both direct and indirect co-culture systems had a significantly smaller number of apoptotic cholangiocytes and decreased expression of fibrogenic cytokines, transforming growth factor beta-1 (TGF-beta1) and platelet-derived growth factor-BB (PDGF-BB). Moreover, hAFSCs increased cholangiocyte proliferation in injured organoids. CONCLUSION: hAFSCs have the ability to protect the organoids from injury by decreasing cholangiocyte apoptosis and promoting cholangiocyte proliferation. This protective ability of hAFSCs leads to inhibition of the fibrogenic response in the injured organoids. hAFSCs have high therapeutic potential to attenuate liver fibrogenesis in cholangiopathic diseases such as BA. CI - Copyright (c) 2020 Elsevier Inc. All rights reserved. FAU - Chusilp, Sinobol AU - Chusilp S AD - Division of General and Thoracic Surgery, Translational Medicine Program, The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada; Division of Pediatric Surgery, Department of Surgery, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand. FAU - Lee, Carol AU - Lee C AD - Division of General and Thoracic Surgery, Translational Medicine Program, The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada. FAU - Li, Bo AU - Li B AD - Division of General and Thoracic Surgery, Translational Medicine Program, The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada. FAU - Lee, Dorothy AU - Lee D AD - Division of General and Thoracic Surgery, Translational Medicine Program, The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada. FAU - Yamoto, Masaya AU - Yamoto M AD - Division of General and Thoracic Surgery, Translational Medicine Program, The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada. FAU - Ganji, Niloofar AU - Ganji N AD - Division of General and Thoracic Surgery, Translational Medicine Program, The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada. FAU - Vejchapipat, Paisarn AU - Vejchapipat P AD - Division of Pediatric Surgery, Department of Surgery, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand. FAU - Pierro, Agostino AU - Pierro A AD - Division of General and Thoracic Surgery, Translational Medicine Program, The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada. Electronic address: agostino.pierro@sickkids.ca. LA - eng PT - Journal Article DEP - 20201006 PL - United States TA - J Pediatr Surg JT - Journal of pediatric surgery JID - 0052631 SB - IM MH - *Amniotic Fluid MH - Apoptosis MH - Bile Ducts/surgery MH - Humans MH - Liver MH - *Organoids MH - Stem Cells OTO - NOTNLM OT - Amniotic fluid stem cell OT - Bile duct injury OT - Cell apoptosis OT - Fibrogenic cytokine COIS- Declaration of competing interest The authors declare no conflict of interest. EDAT- 2020/11/02 06:00 MHDA- 2021/06/25 06:00 CRDT- 2020/11/01 20:26 PHST- 2020/09/03 00:00 [received] PHST- 2020/09/22 00:00 [accepted] PHST- 2020/11/02 06:00 [pubmed] PHST- 2021/06/25 06:00 [medline] PHST- 2020/11/01 20:26 [entrez] AID - S0022-3468(20)30692-8 [pii] AID - 10.1016/j.jpedsurg.2020.09.043 [doi] PST - ppublish SO - J Pediatr Surg. 2021 Jan;56(1):11-16. doi: 10.1016/j.jpedsurg.2020.09.043. Epub 2020 Oct 6.