# Effect and molecular mechanism of hesperadin-induced ferroptosis in chronic myeloid leukemia K562 cells

**Authors:** 俊毅 魏, 龙 李, 慧敏 刘

PMC · DOI: 10.3760/cma.j.cn121090-20231218-00323 · Chinese Journal of Hematology · 2024-06-01

## TL;DR

This study shows that hesperadin induces ferroptosis in K562 leukemia cells by targeting the SLC7A11/GPX4 pathway.

## Contribution

The novel finding is that hesperadin promotes ferroptosis in chronic myeloid leukemia cells through specific molecular mechanisms.

## Key findings

- Hesperadin reduces K562 cell viability, proliferation, and migration in a dose-dependent manner.
- Hesperadin increases lipid peroxidation and Fe2+ levels, indicating ferroptosis induction.
- SLC7A11 overexpression reverses hesperadin-induced ferroptosis, confirming its role in the mechanism.

## Abstract

探讨橙皮苷诱导慢性髓性白血病细胞系K562细胞发生铁死亡的作用及分子机制。

通过CCK-8、EDU-594、Transwell法检测橙皮苷对K562细胞活力、增殖和迁移的影响。采用流式细胞术检测K562细胞的凋亡率。采用C11-BODIPY和FerroOrange检测细胞中脂质过氧化和Fe2+水平。通过Western blot法检测细胞中铁死亡相关蛋白溶质载体家族7成员11（SLC7A11）、谷胱甘肽过氧化物酶4（GPX4）表达水平。采用SLC7A11过表达质粒转染细胞后，同样检测脂质过氧化及Fe2+水平。

橙皮苷可呈剂量依赖性降低K562细胞活力，IC50值为0.544 µmol/L，选取0.4、0.8 µmol/L的橙皮苷行后续实验。EDU-594、Transwell法和流式细胞术检测显示，0.4、0.8 µmol/L橙皮苷作用24 h后K562细胞增殖和迁移率明显降低，细胞凋亡率明显提高，与对照组比较差异均有统计学意义（P值均<0.05）。同时Western blot法检测显示，抗凋亡蛋白Bcl-2表达下调，促凋亡蛋白Bax及Caspase-3表达升高。与对照组比较，橙皮苷可以提高细胞内脂质过氧化和Fe2+水平（P值均<0.05）。铁死亡抑制剂（Fer-1）与橙皮苷联合给药可以逆转橙皮苷对K562细胞的作用。0.8 µmol/L橙皮苷作用组铁死亡相关基因SLC7A11、GPX4 mRNA及蛋白水平明显降低（P值均<0.05）。SLC7A11过表达可以抑制橙皮苷作用，减轻铁死亡。

橙皮苷可通过调控SLC7A11/GPX4轴，促进K562细胞铁死亡。

## Linked entities

- **Genes:** SLC7A11 (solute carrier family 7 member 11) [NCBI Gene 23657], GPX4 (glutathione peroxidase 4) [NCBI Gene 2879], BCL2 (BCL2 apoptosis regulator) [NCBI Gene 596], BAX (BCL2 associated X, apoptosis regulator) [NCBI Gene 581], Casp3 (caspase 3) [NCBI Gene 12367]
- **Proteins:** SLC7A11 (solute carrier family 7 member 11), GPX4 (glutathione peroxidase 4), BCL2 (BCL2 apoptosis regulator), BAX (BCL2 associated X, apoptosis regulator), Casp3 (caspase 3)
- **Chemicals:** hesperadin (PubChem CID 135421442), Fer-1 (PubChem CID 4068248)
- **Diseases:** chronic myeloid leukemia (MONDO:0011996)

## Full-text entities

- **Genes:** BAX (BCL2 associated X, apoptosis regulator) [NCBI Gene 581] {aka BCL2L4}, GPX4 (glutathione peroxidase 4) [NCBI Gene 2879] {aka GPx-4, GSHPx-4, MCSP, PHGPx, SMDS, snGPx}, BCL2 (BCL2 apoptosis regulator) [NCBI Gene 596] {aka Bcl-2, PPP1R50}, CASP3 (caspase 3) [NCBI Gene 836] {aka CPP32, CPP32B, SCA-1}, SLC7A11 (solute carrier family 7 member 11) [NCBI Gene 23657] {aka CCBR1, xCT}
- **Diseases:** chronic myeloid leukemia (MESH:D015464)
- **Chemicals:** Hesperadin (MESH:C474723), C11-BODIPY (-), Lipid (MESH:D008055)
- **Cell lines:** K562 — Homo sapiens (Human), Blast phase chronic myelogenous leukemia, BCR-ABL1 positive, Cancer cell line (CVCL_0004), EDU-594 — Homo sapiens (Human), Homocystinuria, Finite cell line (CVCL_0P59)

## Full text

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## Figures

6 figures with captions in the complete paper: https://tomesphere.com/paper/PMC11310802/full.md

## References

34 references — full list in the complete paper: https://tomesphere.com/paper/PMC11310802/full.md

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Source: https://tomesphere.com/paper/PMC11310802