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Mechanism of bioactive polysaccharide from Lachnum sp. acts synergistically with 5‐fluorouracil against human hepatocellular carcinoma
- Source :
- Journal of Cellular Physiology. 234:15548-15562
- Publication Year :
- 2019
- Publisher :
- Wiley, 2019.
-
Abstract
- The antimetabolite 5-fluorouracil (5-FU) is a widely used antitumor agent, however the overall response rate to 5-FU as a single agent is usually limited. Herein, how Lachnum expolysaccharide (LEP-2a), a type of active polysaccharide isolated from Lachnum sp., acted synergistically with 5-FU on HepG2 cells was investigated. It was found that LEP-2a notably enhanced 5-FU sensitivity in HepG2 cells in a synergistic manner. After combination treatment of 5-FU and LEP-2a, Ras/Raf/MEK/ERK and PI3K/AKT/mTOR pathway were inactivated. In addition, combination treatment induced generation of reactive oxygen species, decreased the levels of intracellular antioxidant enzymes and triggered mitochondrial apoptosis pathway. Furthermore, 5-FU combined with LEP-2a also resulted in p53 activation and NF-κB inhibition, and cell cycle arrest in the S phase as well as cell metastasis stagnation. Interestingly, LEP-2a treatment also blocked the DNA damage repair procedure. These findings demonstrate that LEP-2a enhanced 5-FU sensitivity and combination of 5-FU and LEP-2a exerts synergistic antitumor efficiency through multiple approaches.
- Subjects :
- 0301 basic medicine
MAPK/ERK pathway
Cell cycle checkpoint
Physiology
education
Clinical Biochemistry
Cell
03 medical and health sciences
0302 clinical medicine
Lachnum
medicine
Protein kinase B
health care economics and organizations
PI3K/AKT/mTOR pathway
chemistry.chemical_classification
Reactive oxygen species
biology
Cell Biology
biology.organism_classification
030104 developmental biology
medicine.anatomical_structure
chemistry
030220 oncology & carcinogenesis
Cancer research
hormones, hormone substitutes, and hormone antagonists
Intracellular
Subjects
Details
- ISSN :
- 10974652 and 00219541
- Volume :
- 234
- Database :
- OpenAIRE
- Journal :
- Journal of Cellular Physiology
- Accession number :
- edsair.doi.dedup.....1d922652c00bb386c6ea00297ade6a3e