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World J Gastroenterol. 2017 Aug 7;23(29):5333-5344. doi: 10.3748/wjg.v23.i29.5333.

Salvianolic acid B protects hepatocytes from H2O2 injury by stabilizing the lysosomal membrane.

Author information

1
Xiao-Feng Yan, Pei Zhao, Xiao-Ling Wang, Department of Biology, School of Basic Medical Science, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.

Abstract

AIM:

To investigate the capability of salvianolic acid B (Sal B) to protect hepatocytes from hydrogen peroxide (H2O2)/carbon tetrachloride (CCl4)-induced lysosomal membrane permeabilization.

METHODS:

Cell Counting Kit-8 assay was used to measure cell viability. Apoptosis and death were assayed through flow cytometry. BrdU incorporation was used to detect cell proliferation. Serum alanine aminotransferase activity and liver malondialdehyde (MDA) content were measured. Liver histopathological changes were evaluated using hematoxylin-eosin staining. Lysosomal membrane permeability was detected with LysoTracker Green-labeled probes and acridine orange staining. The levels of protein carbonyl content (PCC), cathepsins (Cat)B/D, and lysosome-associated membrane protein 1 (LAMP1) were evaluated through western blotting. Cytosol CatB activity analysis was performed with chemiluminescence detection. The mRNA level of LAMP1 was evaluated through quantitative real-time polymerase chain reaction.

RESULTS:

Results indicated that H2O2 induced cell injury/death. Sal B attenuated H2O2-induced cell apoptosis and death, restored the inhibition of proliferation, decreased the amount of PCC, and stabilized the lysosome membrane by increasing the LAMP1 protein level and antagonizing CatB/D leakage into the cytosol. CCl4 also triggered hepatocyte death. Furthermore, Sal B effectively rescued hepatocytes by increasing LAMP1 expression and by reducing lysosomal enzyme translocation to the cytosol.

CONCLUSION:

Sal B protected mouse embryonic hepatocytes from H2O2/CCl4-induced injury/death by stabilizing the lysosomal membrane.

KEYWORDS:

Hepatocyte; Injury; Lysosomal membrane permeabilization; Salvianolic acid B

PMID:
28839433
PMCID:
PMC5550782
DOI:
10.3748/wjg.v23.i29.5333
[Indexed for MEDLINE]
Free PMC Article

Conflict of interest statement

Conflict-of-interest statement: The authors declare that there are no conflicts of interest.

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