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Published on: September 1, 2019
SiRNA-mediated Silencing of the RPS19 Gene Induces Apoptosis and Inhibits Cell Cycle Progression in Chronic Myeloid
Javad Roodgar-Saffari1, Vajiheh Zarrinpour1, Mohammad Mahdi Forghanifard1
1Department of Biology, Damghan Branch, Islamic Azad University, Damghan, Iran.
Abstract:
This research delves into the therapeutic implications of utilizing small interfering RNA (siRNA) to target the ribosomal protein S19 (RPS19) gene in chronic myeloid leukemia (CML) using the K562 cell line model. The primary objective was to investigate how gene silencing affects apoptosis promotion and cell cycle arrest. The study employed bioinformatics tools and databases to explore the interactions involving RPS19 and neighboring proteins. Subsequently, siRNA-mediated gene silencing was utilized to suppress RPS19 expression in K-562 cells, with assessments conducted on cell cycle progression and apoptosis through flow cytometry analysis. Furthermore, real-time PCR was employed to evaluate the expression levels of RPS19, along with the closely associated RPS16 and RPS18 genes. Silencing the RPS19 gene in siRNA-transfected K-562 cells led to an increase in apoptotic cells by over 20%, with a significant accumulation in the sub-G1 and G1 phases. Additionally, the knockdown of RPS19 resulted in a 75% decrease in RPS16 expression and a 50% decrease in RPS18 expression. These results demonstrate the therapeutic potential of targeting RPS19 in CML cells, suggesting a promising approach for precise treatment strategies in leukemia and potentially other types of cancer.
Insights
Targeting ribosomal protein S19 (RPS19) with small interfering RNA (siRNA) in chronic myeloid leukemia (CML) cells significantly increased apoptosis and arrested cell cycle. This RPS19 gene silencing shows therapeutic potential for CML treatment.
Area of Science:
- Molecular Biology
- Cancer Research
- Genetics
Background:
- Chronic myeloid leukemia (CML) is a myeloproliferative neoplasm characterized by the Philadelphia chromosome.
- Ribosomal protein S19 (RPS19) is implicated in various cancers, but its role in CML requires further investigation.
- Targeting specific genes offers a promising avenue for precision medicine in leukemia therapy.
Purpose of the Study:
- To investigate the therapeutic potential of silencing the RPS19 gene in CML using small interfering RNA (siRNA).
- To determine the effects of RPS19 gene silencing on apoptosis promotion and cell cycle arrest in K562 CML cells.
- To analyze the impact of RPS19 knockdown on the expression of related ribosomal protein genes (RPS16, RPS18).
Main Methods:
- Bioinformatics analysis to predict RPS19 interactions.
- siRNA-mediated gene silencing of RPS19 in K562 cells.
- Flow cytometry to assess cell cycle progression and apoptosis.
- Real-time PCR to quantify gene expression levels of RPS19, RPS16, and RPS18.
Main Results:
- siRNA-mediated silencing of RPS19 in K562 cells significantly increased apoptosis by over 20%.
- RPS19 knockdown led to cell cycle arrest, with accumulation in the sub-G1 and G1 phases.
- Knockdown of RPS19 resulted in a 75% decrease in RPS16 and a 50% decrease in RPS18 expression.
Conclusions:
- Targeting RPS19 via siRNA demonstrates significant therapeutic potential in CML cells.
- RPS19 gene silencing effectively induces apoptosis and cell cycle arrest in CML models.
- This approach offers a promising strategy for precise CML treatment and potentially other cancers.
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