1.中山大学附属第一医院儿科,广东 广州 510080
2.中山大学中山医学院寄生虫学教研室//中山大学热带病防治研究教育部重点实验室,广东 广州 510080
苏嘉茵,硕士生,研究方向:儿童血液肿瘤,E-mail:sujy26@mail2.sysu.edu.cn
收稿:2022-02-25,
纸质出版:2022-05-20
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苏嘉茵,吴忠道,罗学群.三氧化二砷对T急淋白血病及DNA转甲基酶1的影响[J].中山大学学报(医学科学版),2022,43(03):422-429.
SU Jia-yin,WU Zhong-dao,LUO Xue-qun.Effect of Arsenic Trioxide on Acute T-Lymphocytic Leukemia and DNA methyltransferase 1[J].Journal of Sun Yat-sen University(Medical Sciences),2022,43(03):422-429.
苏嘉茵,吴忠道,罗学群.三氧化二砷对T急淋白血病及DNA转甲基酶1的影响[J].中山大学学报(医学科学版),2022,43(03):422-429. DOI: 10.13471/j.cnki.j.sun.yat-sen.univ(med.sci).2022.0310.
SU Jia-yin,WU Zhong-dao,LUO Xue-qun.Effect of Arsenic Trioxide on Acute T-Lymphocytic Leukemia and DNA methyltransferase 1[J].Journal of Sun Yat-sen University(Medical Sciences),2022,43(03):422-429. DOI: 10.13471/j.cnki.j.sun.yat-sen.univ(med.sci).2022.0310.
目的
2
本研究旨在探索三氧化二砷(ATO)对急性T淋巴细胞白血病(T-ALL)细胞中DNA转甲基酶1(
DNMT1
)表达的影响及其抗白血病作用机制。
方法
2
体外培养T-ALL细胞株(Jurkat、CCRF-CEM、Molt-4),依据不同ATO干预浓度,分为对照组(0 μmol/L)、低浓度组(3 μmol/L)、高浓度组(6 μmol/L),应用RT-qPCR和western blot研究 ATO(0、3、6 μmol/L)干预24 h后细胞内
DNMT1
和
cleaved-caspase-3
表达的变化;应用流式细胞术测定 T-ALL 细胞系(Jurkat、CCRF-CEM、MOLT-4)的细胞死亡率;在ATO的干预下,应用Z-DEVD-FMK后检测
DNMT1
和
cleaved-caspase-3
表达和细胞死亡率的变化;在ATO的干预下,过表达
DNMT1
检测T-ALL细胞死亡率的变化。
结果
2
随着ATO浓度的增加,T-ALL细胞
DNMT1
表达水平降低,
cleaved-caspase-3
蛋白表达水平增加,细胞死亡率增加,差异具有统计学意义(
P
<
0.05);应用Z-DEVD-FMK后可特异性抑制
cleaved-caspase-3
,减弱ATO对
DNMT1
表达的抑制作用,降低细胞死亡率,差异具有统计学意义(
P
<
0.05);在T-ALL细胞中过表达
DNMT1
可显著降低ATO处理后诱导的细胞死亡,差异具有统计学意义(
P
<
0.05)。
结论
2
在一定浓度范围内,ATO可通过激活
caspase-3
有效抑制
DNMT1
的表达从而诱导T-ALL细胞死亡,为未来ATO作为去甲基化药物应用于提高T-ALL的临床治疗提供了一定的理论依据。
Objective
2
To explore the effect of arsenic trioxide (ATO) on the expression of DNA methyltransferase 1 (
DNMT1
) and its anti-leukemia mechanism in acute T-lymphocytic leukemia (T-ALL) cells.
Methods
2
T-ALL cell lines (Jurkat, CCRF-CEM, Molt-4) were cultured in vitro and divided into control (0 μmol/L), low concentration (3 μmol/L) and high concentration (6 μmol/L) groups according to the dose of ATO, and the expression of
DNMT1
and
cleaved-caspase-3
were investigated by RT-qPCR and western blot after ATO treatment for 24 h (0, 3 and 6 μmol/L) intervention; Flow cytometry was applied to detect cell death in T-ALL cell lines (Jurkat, CCRF-CEM, MOLT-4); The expression of
DNMT1
and
cleaved-caspase-3
and cell death were detected after applying ATO and Z-DEVD-FMK (
caspase-3
specific inhibitor); T-ALL cell death was detected after overexpressing DNMT1 under ATO intervention.
Results
2
With the dose of ATO increasing, the expression level of
DNMT1
in T-ALL cells decreased, the expression level of
cleaved-caspase-3
protein increased, and the cell mortality increased (
P
<
0.05); The application of Z-DEVD-FMK specifically inhibited
cleaved-caspase-3
, diminished the inhibitory effect of ATO on
DNMT1
expression, and decreased the cell mortality (
P
<
0.05);Overexpression of DNMT1 in T-ALL cells significantly reduced cell death induced by ATO treatment (
P
<
0.05).
Conclusion
2
Within a certain concentration range, ATO effectively down-regulates the expression of
DNMT1
via the activation of
caspase-3
in a dose-dependent manner, thus inducing cell death in T-ALL cells, which provides a theoretical basis for the future application of ATO as a demethylating drug to improve the clinical treatment of T-ALL.
Bornhauser BC , Bonapace L , Lindholm D , et al . Low-dose arsenic trioxide sensitizes glucocorticoid-resistant acute lymphoblastic leukemia cells to dexamethasone via an Akt-dependent pathway [J]. Blood , 2007 , 110 ( 6 ): 2084 - 2091 .
Deng ZY , Zhu SR , Wang MJ , et al . Relation of blood arsenic concentration with effect and safety of arsenic-containing Qinghuang Powder in patients with myelodysplastic syndrome [J]. Chin J Integr Med , 2019 , 25 ( 7 ): 497 - 501 .
Shen ZX , Chen GQ , Ni JH , et al . Use of arsenic trioxide (As 2 O 3 ) in the treatment of acute promyelocytic leukemia (APL): II. Clinical efficacy and pharmacokinetics in relapsed patients [J]. Blood , 1997 , 89 ( 9 ): 3354 - 3360 .
Dai J , Weinberg RS , Waxman S , et al . Malignant cells can be sensitized to undergo growth inhibition and apoptosis by arsenic trioxide through modulation of the glutathione redox system [J]. Blood , 1999 , 93 ( 1 ): 268 - 277 .
郑立敏 , 王丽娜 , 梁聪 , 等 . 全反式维甲酸调控内质网应激诱导FLT3-ITD蛋白自噬降解促进白血病细胞凋亡 [J]. 中华血液学杂志 , 2020 , 41 ( 10 ): 836 - 842 .
Zheng LM , Wang LN , Liang C , et al . Effect of endoplasmic reticulum stress induced by all-trans retinoic acid on apoptosis of FLT3-ITD mutated leukemia cells by activating autophagy in FLT3-ITD mutated protein] [J]. Chin J Hematol , 2020 , 14; 41 ( 10 ): 836 - 842 .
王韫芳 , 孙红琰 , 李昕权 , 等 . 三氧化二砷对NB4及Jurkat细胞系端粒酶活性的抑制效应 [J]. 中国实验血液学杂志 , 2003 , ( 4 ): 359 - 362 .
Wang YF , Sun HY , Wang QL , et al . Inhibiting effect of arsenic trioxide on telomerase activity of NB4 and Jurkat cell lines [J]. Chin J Exp Hematol , 2003 , 11 ( 4 ): 359 - 362 .
Terwilliger T , Abdul-Hay M . Abdul-Hay. Acute lymphoblastic leukemia: a comprehensive review and 2017 update [J]. Blood Cancer J , 2017 , 7 ( 6 ): e577 .
Aldoss I , Douer D , Pullarkat V . Therapy-related acute lymphoblastic leukemia: where do we stand with regards to its definition and characterization [J] Blood Rev , 2019 , 37 : 100584 .
Sánchez-Martínez D , Baroni ML , Gutierrez-Agüera F , et al . Fratricide-resistant CD1a-specific CAR T cells for the treatment of cortical T-cell acute lymphoblastic leukemia [J]. Blood , 2019 , 133 ( 21 ): 2291 - 2304 .
Teachey DT , Hunger SP . Predicting relapse risk in childhood acute lymphoblastic leukaemia [J]. Br J Haematol , 2013 , 162 ( 5 ): 606 - 620 .
Sarmento-Ribeiro AB , Scorilas A , Gonçalves AC , et al . The emergence of drug resistance to targeted cancer therapies: clinical evidence [J]. Drug Resist Updat , 2019 , 47 : 100646 .
Yoshida-Sakai N , Watanabe T , Yamamoto Y , et al . Adult T-cell leukemia-lymphoma acquires resistance to DNA demethylating agents through dysregulation of enzymes involved in pyrimidine metabolism [J]. Int J Cancer , 2022 , 150 ( 7 ): 1184 - 1197 .
Rahmani T , Azad M , Chahardouli B , et al . Patterns of DNMT1 promoter methylation in patients with acute lymphoblastic leukemia [J]. Int J Hematol Oncol Stem Cell Res , 2017 , 11 ( 3 ): 172 - 177 .
Grimm C , Herling CD , Komnidi A , et al . Evaluation of a prognostic epigenetic classification system in chronic lymphocytic leukemia patients [J]. Biomark Insights , 2022 , 17 : 11772719211067972 .
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