Investigation on the mechanism of the combination of eremias multiocellata and cisplatin in reducing chemoresistance of gastric cancer based on in vitro and in vivo experiments

BACKGROUND: Cisplatin (DDP) is one of the important chemotherapy drugs for patients with advanced gastric cancer and metastasis, but its resistance is a bottleneck problem that affects clinical efficacy and patient survival. Eremias multiocellata (EM) is a traditional Chinese herbal medicine, which has been used in the treatment of precancerous lesions, gastric cancer, liver fibrosis, and other digestive diseases. However, the mechanism of reducing chemotherapy resistance to gastric cancer is still unclear.

METHODS: We used the MTT assay to evaluate the proliferative viability of gastric cancer parental cell line MKN45 and its drug-resistant cell line MKN45/DDP, and compared their drug-resistance indices. The migration and invasion abilities of MKN45/DDP drug-resistant cells were evaluated using the Transwell assay. Apoptosis in MKN45/DDP drug-resistant cells was detected using flow cytometry. The effect of a combination of EM and cisplatin on the levels of reactive oxygen species (ROS) and lipid peroxides (LPO) in cisplatin-resistant gastric cancer cells was detected using ROS fluorescent probes and a lipid peroxidation assay kit in conjunction with flow cytometry. The effect of EM combined with cisplatin on the level of iron ions was detected by fluorescence probe and confocal laser technique. Hematoxylin-eosin staining (HE staining) was used to detect the histopathologic morphology of drug-resistant gastric cancer in nude mice. Ferroptosis-related proteins were measured using immunohistochemistry. Real-time fluorescence quantitative polymerase chain reaction (RT-qPCR) was used to detect tumor drug resistance-related genes. The NF-κB/Snail pathway-related proteins, PI3K/AKT/mTOR pathway-related proteins, and drug resistance-related proteins were detected by Western blot.

RESULTS AND CONCLUSIONS: The results of in vitro and in vivo experiments showed that EM combined with DDP could effectively inhibit the migration and invasive ability of MKN45/DDP cells, as well as induce apoptosis of MKN45/DDP cells; the combination of the two drugs could significantly increase the levels of ROS, lipid peroxidation and divalent ferric ions in MKN45/DDP cells, at the same time reducing the levels of Ferroptosis-related proteins, which could induce Ferroptosis. In addition, EM combined with DDP can also exert the effect of reversing DDP resistance and increasing the sensitivity of gastric cancer drug-resistant cells to DDP by regulating the NF-κB/Snail signaling pathway, PI3K/AKT/mTOR signaling pathway, and the expression of drug resistance-related proteins and genes.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:16

Enthalten in:

Aging - 16(2024), 4 vom: 09. Feb., Seite 3386-3403

Sprache:

Englisch

Beteiligte Personen:

Cheng, Fan-E [VerfasserIn]
Li, Zheng [VerfasserIn]
Bai, Xing [VerfasserIn]
Jing, Yanyan [VerfasserIn]
Zhang, Junfei [VerfasserIn]
Shi, Xiaoqian [VerfasserIn]
Li, Tingting [VerfasserIn]
Li, Weiqiang [VerfasserIn]

Links:

Volltext

Themen:

Chemotherapy resistance to gastric cancer
Cisplatin
Cisplatin (DDP)
EC 2.7.1.-
EC 2.7.11.1
Eremias multiocellata (EM)
In vivo and in vitro experiments
Ions
Journal Article
NF-kappa B
Phosphatidylinositol 3-Kinases
Proto-Oncogene Proteins c-akt
Q20Q21Q62J
Reactive Oxygen Species
TOR Serine-Threonine Kinases

Anmerkungen:

Date Completed 06.03.2024

Date Revised 14.03.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.18632/aging.205540

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM368357201