Abstract
Hepatic stem cell transplantation has been demonstrated as an effective alternative therapy for the end-stage liver failure patients. Therefore, the functional detection of hepatic stem cell is essentially required. The present study confirmed that adenovirus BMP9 (Ad-BMP9) could increase the ALB-Gluc activity of HP14-19 hepatic progenitor cells, the expression of specific hepatic markers ALB, TAT, UGT1A were up-regulated while the hepatic stem cell markers DLK, AFP were down-regulated, and the number of positive Periodic acid-Schiff (PAS) stained cells were significantly higher than those in control group. However, the indocyanine green (ICG) uptake failed to be detectable in induced hepatocytes, which was inconsistent. By using another cell line LC14d, we found out that positive ICG uptake cells were located in the area of low cell density, while positive PAS stained cells were mainly concentrated in the area where cells were overlapped, indicating that different cell confluence might affect the outcomes of ICG uptake and PAS staining. A manual wound healing of Ad-BMP9 induced HP14-19 cells was made, the crawling cells were stained positive for ICG but not for PAS. Therefore, our finding may provide evidence for better application of PAS staining and ICG uptake assay in functional detection of mature hepatocytes.
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The reported work was supported by a scientific and technological research program of Chongqing Municipal Education Commission (No. KJQN201900442 to YB).
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LT, S-YF and YH carried out the experiments; T-CH and YB designed the study and wrote the manuscript; LZ and YH participated in cell culture.
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Tao, L., Fang, SY., Zhao, L. et al. Indocyanine Green Uptake and Periodic Acid–Schiff Staining Method for Function Detection of Liver Cells are Affected by Different Cell Confluence. Cytotechnology 73, 159–167 (2021). https://doi.org/10.1007/s10616-021-00453-8
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DOI: https://doi.org/10.1007/s10616-021-00453-8