Related Experiment Video
Updated: Oct 12, 2025
Isolation of Neonatal Extrahepatic Cholangiocytes
Published on: June 5, 2014
Biliary atresia-specific deciduous pulp stem cells feature biliary deficiency
Soichiro Sonoda1, Koichiro Yoshimaru2, Haruyoshi Yamaza3
1Department of Molecular Cell Biology and Oral Anatomy, Kyushu University Graduate School of Dental Science, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
Insights
Stem cells from teeth of infants with biliary atresia (BA) are not suitable for autologous cell therapy due to impaired in vivo function. Further research into BA-specific stem cells may reveal insights into BA development and treatment.
Area of Science:
- Pediatric Hepatology
- Stem Cell Biology
- Regenerative Medicine
Background:
- Biliary atresia (BA) is a severe infant liver disease with poorly understood mechanisms and limited treatment options.
- Current therapies like Kasai hepatoportoenterostomy and liver transplantation are palliative, highlighting the urgent need for innovative treatments.
- Investigating autologous stem cell sources for BA treatment is crucial for advancing therapeutic strategies.
Purpose of the Study:
- To assess the feasibility of using BA-specific stem cells from exfoliated deciduous teeth (BA-SHED) as an autologous cell source for BA treatment.
- To compare the characteristics and therapeutic potential of BA-SHED with those derived from healthy donors (Cont-SHED).
- To evaluate the in vivo efficacy of BA-SHED in a mouse model of liver fibrosis, focusing on bile duct regeneration and function.
Main Methods:
- Isolation and characterization of BA-SHED and Cont-SHED using standard methods, including CFU-F assay and MSC marker analysis.
- In vitro assessment of mesenchymal multipotency and hepatogenic potential of both cell types.
- Intrasplenic transplantation of BA-SHED and Cont-SHED into CCl4-induced liver fibrosis model mice.
- In vivo analysis of bile drainage, donor cell integration, and biliary regeneration using immunohistochemistry (KRT19).
Main Results:
- BA-SHED exhibited typical mesenchymal stem cell (MSC) characteristics and in vitro multipotency comparable to Cont-SHED.
- BA-SHED demonstrated reduced in vitro hepatogenic potential compared to Cont-SHED.
- Cont-SHED promoted in vivo bile drainage and KRT19-positive biliary regeneration in the fibrosis model.
- BA-SHED failed to restore in vivo bile drainage function or biliary regeneration, indicating a lack of therapeutic efficacy.
Conclusions:
- BA-SHED are not suitable for autologous cell therapy in biliary atresia due to impaired in vivo functionality.
- Potential epigenetic modifications in BA-SHED may influence the prenatal and perinatal BA environment.
- BA-SHED research offers a valuable platform for understanding BA pathogenesis and developing novel therapeutic strategies.
Background:
Biliary atresia (BA) is a severe hepatobiliary disease in infants that ultimately results in hepatic failure; however, its pathological mechanism is poorly elucidated. Current surgical options, including Kasai hepatoportoenterostomy and orthotopic liver organ transplantations, are palliative; thus, innovation in BA therapy is urgent.
Methods:
To examine whether BA-specific post-natal stem cells are feasible for autologous cell source for BA treatment, we isolated from human exfoliated deciduous teeth, namely BA-SHED, using a standard colony-forming unit fibroblast (CFU-F) method and compared characteristics as mesenchymal stem cells (MSCs) to healthy donor-derived control SHED, Cont-SHED. BA-SHED and Cont-SHED were intrasplenically transplanted into chronic carbon tetrachloride (CCl4)-induced liver fibrosis model mice, followed by the analysis of bile drainage function and donor integration in vivo. Immunohistochemical assay was examined for the regeneration of intrahepatic bile ducts in the recipient's liver using anti-human specific keratin 19 (KRT19) antibody.
Results:
BA-SHED formed CFU-F, expressed MSC surface markers, and exhibited in vitro mesenchymal multipotency similar to Cont-SHED. BA-SHED showed less in vitro hepatogenic potency than Cont-SHED. Cont-SHED represented in vivo bile drainage function and KRT19-positive biliary regeneration in chronic carbon tetrachloride-induced liver fibrosis model mice. BA-SHED failed to show in vivo biliary potency and bile drainage function compared to Cont-SHED.
Conclusion:
These findings indicate that BA-SHED are not feasible source for BA treatment, because BA-SHED may epigenetically modify the underlying prenatal and perinatal BA environments. In conclusion, these findings suggest that BA-SHED-based studies may provide a platform for understanding the underlying molecular mechanisms of BA development and innovative novel modalities in BA research and treatment.
Related Concept Videos
01:23Tissue Renewal without Stem Cells
However, failure of such a system...
01:17Stem Cell Culture
01:33Adult Stem Cells
01:23Renewal of Intestinal Stem Cells
01:22iPS Cell Differentiation
00:50Unrenewable Cells
Photoreceptors
The retina is composed of several layers and contains specialized cells called photoreceptors. The photoreceptors (rods and cones) change their membrane potential when stimulated by light energy. There are two types of photoreceptors—rods and cones—which differ in the shape of...