YANG Ai-lin,HUANG Hui-ming,LIU Ya-xin,et al.Mechanism of Proteoglycan TPG-1 from Trametes robiniophila Inhibiting Growth of Human Hepatoma SK-HEP-1 Cells[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(01):72-78.
YANG Ai-lin,HUANG Hui-ming,LIU Ya-xin,et al.Mechanism of Proteoglycan TPG-1 from Trametes robiniophila Inhibiting Growth of Human Hepatoma SK-HEP-1 Cells[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(01):72-78. DOI: 10.13422/j.cnki.syfjx.20220126.
Mechanism of Proteoglycan TPG-1 from Trametes robiniophila Inhibiting Growth of Human Hepatoma SK-HEP-1 Cells
(Huaier) has proved to have anti-hepatoma activity, and this paper aims to explore the molecular mechanism.
Method
2
Human hepatoma SK-HEP-1 cells were treated with TPG-1 (0, 0.05, 0.1, 0.25, 0.5, 1 g·L
-1
). Then cell survival was detected by methyl thiazolyl tetrazolium (MTT) and apoptosis by flow cytometry. In addition, expression of genes in SK-HEP-1 cells treated with or without TPG-1 was examined by DNA microarray to preliminarily explore the anti-hepatoma molecular mechanism of TPG-1.
Result
2
TPG-1 inhibited the proliferation of SK-HEP-1 cells as compared with the blank group (
P
<
0.01). After treatment with 1 g·L
-1
TPG-1 for 48 h, the apoptosis rate of SK-HEP-1 cells increased (
P<
0.01), and TPG-1 promoted the cleavage of cysteinyl aspartate specific proteinase (Caspase)-3 and Caspase-7, the key mediators of apoptosis (
P<
0.01). Additionally, TPG-1 (1 g·L
-1
) suppressed the migration of SK-HEP-1 cells (
P<
0.05). A total of 971 differentially expressed genes (DEGs) were identified in SK-HEP-1 cells after treatment with TPG-1, with 486 up-regulated and 485 down-regulated. These DEGs were mainly involved in the Gene Ontology (GO) terms of interleukin-6 (IL-6) biosynthesis, antigen processing and presentation, superoxide dismutase activity, positive regulation of mitogen-activated protein kinase kinase kinase (MAPKKK) cascade, nature killer (NK) cell chemotaxis, and chemokine biosynthesis, and the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways of nucleotide-binding oligomerization domain (NOD)-like receptor signaling pathway, apoptosis, Toll-like receptor signaling pathway, retinoic acid-inducible gene-Ⅰ (RIG-Ⅰ)-like receptor signaling pathway, T-cell receptor signaling pathway, and chemokine signaling pathway. Western blot results showed that TPG-1 (1 g·L
-1
) activated mitogen-activated protein kinase (MAPK) signaling pathway in SK-HEP-1 cells (
P<
0.01).
Conclusion
2
Proteoglycan TPG-1 inhibited the proliferation and migration, and induced apoptosis of human hepatoma SK-HEP-1 cells. Up-regulation of MAPK signaling pathway may be responsible for the growth inhibition of human hepatoma SK-HEP-1 cells by TPG-1.
关键词
Keywords
references
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