Journals / Turkish Journal of Hematology / 2020 / Cilt: 37 - Sayı: 1

Therapeutic Potentials of Inhibition of Jumonji C Domaincontaining Demethylases in Acute Myeloid Leukemia

Akut Myeloid Lösemide Demetilaz İçeren Jumanji C Domainin İnhibisyonunun Terapötik Potansiyeli

Pages
5–12
Publication Date
2022-11-06
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Conclusion: Taken together, these results demonstrate that methylstat may be a powerful candidate as a drug component of AML treatment protocols.

📌 3 Key Takeaways

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Objective & Hypothesis:Objective: Acute myeloid leukemia (AML) is a complex disease affected by both genetic and epigenetic factors.
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Key Findings & Data:Materials and Methods: The cytotoxic and apoptotic effects of methylstat and doxorubicin on HL-60 cells were detected by MTT cell viability assay, double staining of treated cells with annexin-V/ propidium iodide, and caspase-3 activity assay.
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Conclusion & Impact:Conclusion: Taken together, these results demonstrate that methylstat may be a powerful candidate as a drug component of AML treatment protocols.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objective: Acute myeloid leukemia (AML) is a complex disease affected by both genetic and epigenetic factors. Histone methylation and demethylation are types of epigenetic modification in chromatin remodeling and gene expression. Abnormal expression of histone demethylases is indicated in many types of cancer including AML. Although many commercial drugs are available to treat AML, an absolute cure has not been discovered yet. However, inhibition of demethylases could be a potential cure for AML. Methylstat is a chemical agent that inhibits the Jumonji C domain-containing demethylases. Materials and Methods: The cytotoxic and apoptotic effects of methylstat and doxorubicin on HL-60 cells were detected by MTT cell viability assay, double staining of treated cells with annexin-V/ propidium iodide, and caspase-3 activity assay. Mitochondrial activity was analyzed using JC-1 dye. The expression levels of the BCL2 and BCL2L1 anti-apoptotic genes in HL-60 cells were determined using real-time polymerase chain reaction (PCR). Lastly, the cytostatic effect was determined by cell cycle analysis. Results: In our research, cytotoxic, cytostatic, and apoptotic effects of methylstat on human HL-60 cells were investigated. Cytotoxic and cytostatic analyses revealed that methylstat decreased cell proliferation in a dose-dependent cytotoxic manner and arrested HL60 cells in the G2/M and S phases. Methylstat also induced apoptosis through the loss of mitochondrial membrane potential and increases in caspase-3 enzyme activity. The expression levels of BCL2 and BCL2L1 were also decreased according to real-time PCR results. Finally, the combination of methylstat with doxorubicin resulted in synergistic cytotoxic effects on HL-60 cells. Conclusion: Taken together, these results demonstrate that methylstat may be a powerful candidate as a drug component of AML treatment protocols.

Özet

Amaç: Akut myeloid lösemi (AML) hem genetik hem de epigenetik faktörlerden etkilenen kompleks bir hastalıktır. Histon metilasyonu ve demetilasyonu, kromatin yeniden yapılanması ve gen ekspresyonu tayinindeki önemli epigenetik modifikasyonlarındandır. Histon demetilazların anormal ekspresyonu, AML dahil birçok kanser türünde etkilidir. AML’yi tedavi etmek için birçok ticari ilaç mevcut olmasına rağmen, kesin tedavisi bulunmamaktadır. Bu nedenle, demetilazların inhibisyonu AML için potansiyel bir tedavi olabilir. Methylstat, demetilaz içeren Jumonji C domain-inhibe eden bir kimyasal maddedir.Gereç ve Yöntemler: Methylstat ve doksorubisinin HL-60 hücreleri üzerindeki sitotoksik ve apoptotik etkisi, sırasıyla MTT canlılık testi, annexin-V/propidium iyodür çift boyaması ve kaspaz-3 aktivite testi ile saptandı. Ayrıca, hücrelerdeki mitokondriyal aktivite JC-1 boyası kullanılarak analiz edildi. HL-60 hücrelerinde BCL2 ve BCL2L1 apoptotik olmayan genlerin ekspresyon seviyeleri, gerçek zamanlı polimeraz zincir reaksiyonu (PZR) kullanılarak belirlendi. Son olarak, sitostatik etki hücre döngüsü analizi ile belirlenmiştir.Bulgular: Araştırmamızda, methylstatın HL-60 hücreleri üzerindeki sitotoksik, sitostatik ve apoptotik etkileri olduğu belirlenmiştir. Sitotoksik ve sitostatik analizlerde methylstatın, HL-60 hücrelerinde doza bağlı hücre çoğalmasını azalttığını ve G2/M ve S fazlarındaki sitotoksik etkisinin arttığı ortaya koydu. Methylstat ayrıca, mitokondriyal membran potansiyelini düşürdüğü ve kaspaz-3 enzim aktivitesindeki artışlarla apoptozu indüklemiştir. Ayrıca, gerçek zamanlı PZR sonuçlarına göre BCL2 ve BCL2L1 genlerinin ekspresyon seviyeleri azalmaktadır. Son olarak, methylstatın doksorubisin ile kombinasyonu, HL-60 hücreleri üzerinde sinerjik sitotoksik etkilere yol açmıştır.Sonuç: Methylstatın AML için tam bir tedavi bulmak için bir ilaç bileşeni olarak güçlü bir aday olabileceğini göstermiştir.

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Cite This Article

ÇEKDEMİR, D., ENGÜR, S., KOCA, D., HASTAR, N., KİRAZ, Y., ULU, G. T., BARAN, Y. (2022). Therapeutic Potentials of Inhibition of Jumonji C Domaincontaining Demethylases in Acute Myeloid Leukemia. Turkish Journal of Hematology, Cilt: 37 - Sayı: 1, 5–12. https://ajindex.com/articles/606594

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