# The role of AKT inhibitors combined with Ruxolitinib in ameliorating myeloproliferative disorders in mice with CALR gene mutations

**Authors:** 丽伟 张, 启岗 张, 梦楚 季, 昆明 齐, 振宇 李, 开林 徐, 春玲 付

PMC · DOI: 10.3760/cma.j.cn121090-20240920-00360 · Chinese Journal of Hematology · 2025-08-01

## TL;DR

Combining AKT inhibitor MK2206 with Ruxolitinib reduces disease symptoms in mice with CALR gene mutations linked to myeloproliferative disorders.

## Contribution

Demonstrates that combining AKT inhibition with Ruxolitinib improves outcomes in CALR-mutant myeloproliferative tumor models.

## Key findings

- Combined treatment significantly reduced blood platelet and white blood cell counts compared to single treatments.
- Spleen weight and tumor cell infiltration were lower in the combination treatment group.
- Abnormal hematopoietic stem cells and megakaryocyte lineage cells decreased in the combination group.

## Abstract

探讨AKT抑制剂MK2206联合芦可替尼在CALR基因突变的骨髓增殖性肿瘤中的作用。

①获取小鼠骨髓c-kit+细胞：颈椎脱臼处死小鼠，分离股骨、胫骨及髂骨，收集骨髓细胞，分选出c-kit+细胞。②构建CALR移植小鼠模型：利用逆转录病毒体系构建GFP标记的CALR基因突变载体，经Platinum-E细胞包装后，感染小鼠的骨髓c-kit+细胞，经尾静脉注入经致死剂量照射的同种雌性受鼠体内。③移植成功后随机分成四组，分别予以Captisol（15％）、MK2206（60 mg/kg）、芦可替尼（30 mg/kg）、MK2206（60 mg/kg）联合芦可替尼（30 mg/kg）灌胃治疗，连续给药4周，每周给药5 d，监测小鼠外周血血象变化，观察移植小鼠脾脏大小重量。④流式细胞术检测脾脏及骨髓组织中GFP+肿瘤细胞、巨核谱系细胞以及造血干细胞比例，观察小鼠脾脏以及骨髓组织肿瘤细胞浸润程度。

①在灌胃治疗后，MK2206联合芦可替尼治疗组的小鼠外周血血小板和白细胞计数均显著低于MK2206单药治疗组和芦可替尼单药组（P值均<0.05）；②在移植后第30周，MK2206联合芦可替尼治疗组小鼠脾脏重量低于MK2206单药和芦可替尼单药组（P值均<0.05）；③连续给药4周后，联合给药组CALR移植小鼠骨髓以及脾脏组织中巨核谱系细胞、GFP+肿瘤细胞比例明显降低（P值均<0.05）；骨髓组织中异常造血干细胞占比明显下降（P<0.05）；④联合给药组小鼠脾脏及骨髓中肿瘤细胞浸润减轻、异常巨核细胞比例降低。

AKT抑制剂MK2206联合芦可替尼可显著改善CALR基因突变骨髓增殖性肿瘤小鼠的疾病症状与肿瘤细胞浸润。

## Linked entities

- **Genes:** CALR (calreticulin) [NCBI Gene 811]
- **Proteins:** AKT1 (AKT serine/threonine kinase 1)
- **Chemicals:** MK2206 (PubChem CID 24964624), Ruxolitinib (PubChem CID 17754772), Captisol (PubChem CID 131634907)
- **Species:** Mus musculus (taxon 10090)

## Full-text entities

- **Genes:** Calr (calreticulin) [NCBI Gene 12317] {aka CRT, Calregulin}, Akt1 (Akt serine/threonine kinase 1) [NCBI Gene 11651] {aka Akt, LTR-akt, PKB, PKB/Akt, PKBalpha, Rac}, Kit (Kit proto-oncogene receptor tyrosine kinase) [NCBI Gene 16590] {aka Bs, CD117, Fdc, Gsfsco1, Gsfsco5, Gsfsow3}
- **Diseases:** MPN (MESH:D009369), splenomegaly (MESH:D013163), myeloproliferative disorders (MESH:D009196)
- **Chemicals:** MK2206 (MESH:C548887), Ruxolitinib (MESH:C540383), H&amp;E (MESH:D006371)
- **Species:** Mus musculus (house mouse, species) [taxon 10090]
- **Cell lines:** Platinum-E — Homo sapiens (Human), Transformed cell line (CVCL_B488)

## Full text

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## Figures

6 figures with captions in the complete paper: https://tomesphere.com/paper/PMC12541485/full.md

## References

22 references — full list in the complete paper: https://tomesphere.com/paper/PMC12541485/full.md

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Source: https://tomesphere.com/paper/PMC12541485