AI Article Synopsis
- PGK1 is believed to play a significant role in the metastatic spread of gastric cancer and impacts tumor stem cells, which are linked to treatment resistance and recurrence.
- In experiments with human gastric adenocarcinoma cell lines, PGK1 was inhibited using a specific RNA method, and the effects of chemotherapy drugs 5-FU and mitomycin were tested.
- The findings revealed that inhibiting PGK1 significantly increased cell sensitivity to these chemotherapeutic agents, suggesting it could help overcome resistance in gastric cancer treatments.
Article Abstract
Background And Objectives: It can be assumed that PGK1 is involved in metastatic spread of gastric carcinomas. Furthermore PGK1 has a proven influence on the characteristics of tumor stem cells. The presence of malignant stem cells, regarding treatment resistance and recurrence, is of considerable importance. We hypothesized that inhibition of PGK1 makes these cells more sensitive to chemotherapeutic agents and therefore mediates an overcome of the existing therapy resistance.
Methods: All investigations were performed with human gastric adenocarcinoma cell lines. Small hairpin RNA knockdown of PGK1 via adenovirus-shPGK1 was used for PGK1-inhibition. Chemotherapeutic agents were 5-FU and mitomycin. FACS, qRT-PCR, and xCELLigence were performed.
Results: Using the medium-sole-control indicating the highest cell viability and Triton indicating the lowest, mitomycin and 5-FU alone showed a significant decrease in cell viability. The treatment with AdvshPGK1 alone already showed a better decrease. The simultaneous application of chemotherapeutics and adenovirus showed the strongest effect and is comparable to the effect of Triton.
Conclusions: We showed a significant decrease in cell viability after the simultaneous application of chemotherapeutics and adenovirus. These results suggest that PGK1-inhibition is able to increase the vulnerability of gastric cancer cells and tumor stem cells to overcome the chemotherapeutic therapy resistance.
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| http://dx.doi.org/10.1016/j.ijsu.2015.08.020 | DOI Listing |
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