Acute myeloid leukemia (AML) is a form of acute leukemia with the highest incidence and the
lowest overall survival rates. Insufficiency of targeting leukemia stem cells (LSC) is the main obstacle that causes
drug resistance and relapse in AML. Another important problem is chemotherapeutics’ toxicity. Developing a
combination, including well-known chemotherapeutics in lower dose and new agent that have capacity to target
LSC may be more reliable and practical way to overcome these limitations. Previously, we found that Casticin
polyphenol induces apoptosis in AML stem-like (KG1a) and parental (KG1) cell lines without affecting healthy
cell. Therefore, for the first time, we aimed to find synergistic combination of Daunorubicin (DNR) and Casticin
to target apoptosis in both LSC and leukemic blasts with less toxicity. Synergism of DNR-Casticin combinations
on KG1a, KG1, HL-60 cells were determined with MTT viability assay by Chou-Talalay method. The
apoptotic/necrotic effects of combinations were evaluated with Annexin V- PI kit by flow cytometry. Synergistic
combination of 0.25 µM DNR + 0.0625 µM Casticin (combination index, CI<1) decreased cell viability to 45.3%
and 63.2% in KG1a, KG1 cell lines, respectively. However, the combination-induced apoptosis (KG1a: 5 %; KG1:
5.8%) were not higher than 0.25 µM DNR-induced (KG1a: 9.4%; KG1: 8.1%) or 0.0625 µM Casticin-induced
(KG1a: 3.8%; KG1: 5.1%) apoptosis (p>0.05). Our study showed that synergistic combination of DNR-Casticin
causes important decrease in cell viability. Although we did not detect increase in apoptosis with the
combination, we presume that other cell death pathways may be included. The highest apoptosis was obtained
by the treatment of 2 µM Casticin alone in KG1a (21.7%), KG1 (26.5%), HL-60 (14.6%). Therefore, we think that
Casticin polyphenol might be the possible candidate for new targeted therapy studies for AML.
Acute myeloid leukemia apoptosis combination leukemia stem cell
Birincil Dil | İngilizce |
---|---|
Konular | Eczacılık ve İlaç Bilimleri (Diğer) |
Bölüm | Articles |
Yazarlar | |
Yayımlanma Tarihi | 28 Haziran 2025 |
Yayımlandığı Sayı | Yıl 2023 Cilt: 27 Sayı: 3 |