# Establishment of a chronic lymphocytic leukemia mouse model via adoptive transfer of Eµ-TCL1 transgenic splenocytes

**Authors:** 曼姁 张, 沙 郭, 阿不都克力木 娜迪娅, 阿力木 谢仁古丽, 瑞 张, 雪娇 曾, 淋一 张, 冉冉 张, 建华 曲

PMC · DOI: 10.3760/cma.j.cn121090-20241120-00461 · Chinese Journal of Hematology · 2025-05-01

## TL;DR

Researchers created a mouse model for chronic lymphocytic leukemia by transferring genetically modified spleen cells into wild-type mice, resulting in disease symptoms.

## Contribution

A novel, short-cycle chronic lymphocytic leukemia mouse model was established using adoptive transfer of Eµ-TCL1 transgenic splenocytes.

## Key findings

- The AT group showed significant spleen and liver enlargement compared to the WT group.
- AT group mice exhibited increased peripheral blood white blood cell counts and B lymphocyte percentages.
- Pathological and flow cytometry analyses confirmed CLL-like features in the AT group.

## Abstract

利用免疫球蛋白重链增强子调控的T细胞白血病/淋巴瘤1（Eµ-TCL1）转基因小鼠脾细胞过继性转移（AT）至野生型（WT）小鼠体内，建立一种具有自身免疫功能、成模周期较短的慢性淋巴细胞白血病（CLL）小鼠模型。

实验使用了无特定病原体（SPF）级健康的C57BL/6J WT小鼠和H11-Eµ-VH-TCL1-β-globin-PolyA基因敲入小鼠。通过CRISPR/Cas9技术构建了H11-Eµ-VH-TCL1-β-globin-PolyA基因敲入小鼠，并采用PCR方法鉴定小鼠的基因型。实验动物被随机分为AT组和WT组，每组10只，AT组为H11-Eµ-VH-TCL1-β-globin-PolyA基因敲入小鼠脾细胞腹腔注射至体内的WT小鼠。监测小鼠的体重和一般情况，并在移植后第9周进行颈椎脱臼处死。通过病理学表现、外周血白细胞变化和免疫表型等关键指标对CLL小鼠模型进行疾病验证。

AT组脾重量为（0.92±0.16）g、肝重量为（2.11±0.56）g；WT组脾重量为（0.06±0.01）g、肝重量为（1.42±0.13）g，AT组出现明显的肝（P＝0.006）、脾（P<0.05）肿大。AT组外周血白细胞数量较WT组明显增多［（124.33±8.74）×109/L对（5.55±1.67）×109/L，P＝0.002］；AT组外周血B淋巴细胞百分比较WT组增多［（69.13±6.88）％对（39.78±5.94）％，P<0.05］。病理组织学检查发现AT组小鼠的脾、淋巴结、骨髓出现CLL病理表现，肝、肺、肾组织均有明显淋巴细胞浸润。流式细胞术检测结果示AT组CD19+CD5+ B淋巴细胞占淋巴细胞百分比在外周血、骨髓和脾中分别为（61.37±9.92）％、（28.61±7.08）％、（86.03±5.78）％；WT组CD19+CD5+ B淋巴细胞占淋巴细胞百分比在外周血、骨髓和脾中分别为（4.51±1.32）％、（5.58±1.46）％、（14.33±3.2）％；AT组外周血、骨髓、脾中CD19+CD5+ B淋巴细胞占比较WT组增多，差异均具有统计学意义（均P<0.05），且CD43、CD200表达阳性，但CD20、CD22、CD79b的表达低于WT组。

通过Eµ-TCL1转基因小鼠脾细胞AT，成功建立了成型周期相对较短的CLL小鼠模型，其可作为一种理想的临床前模型用于CLL相关疾病研究。

## Linked entities

- **Genes:** CD19 (CD19 molecule) [NCBI Gene 930], CD5 (CD5 molecule) [NCBI Gene 921], SPN (sialophorin) [NCBI Gene 6693], CD200 (CD200 molecule) [NCBI Gene 4345], MS4A1 (membrane spanning 4-domains A1) [NCBI Gene 931], CD22 (CD22 molecule) [NCBI Gene 933], CD79B (CD79b molecule) [NCBI Gene 974]
- **Diseases:** chronic lymphocytic leukemia (MONDO:0004948), CLL (MONDO:0004948)
- **Species:** Mus musculus (taxon 10090)

## Full-text entities

- **Genes:** Cd79b (CD79B antigen) [NCBI Gene 15985] {aka B29, Ig-beta, Igb, Igbeta}, Ms4a1 (membrane-spanning 4-domains, subfamily A, member 1) [NCBI Gene 12482] {aka Cd20, Ly-44, Ms4a2}, Cd5 (CD5 antigen) [NCBI Gene 12507] {aka Ly-1, Ly-12, Ly-A, Lyt-1}, Cd200 (CD200 molecule) [NCBI Gene 17470] {aka Mox2, OX2}, Ighv2-3 (immunoglobulin heavy variable 2-3) [NCBI Gene 238412] {aka Gm16948}, Cd22 (CD22 antigen) [NCBI Gene 12483] {aka A530093D23, Lyb-8, Lyb8}, Spn (sialophorin) [NCBI Gene 20737] {aka A630014B01Rik, Cd43, Galgp, Ly-48, Ly48}, Cd19 (CD19 antigen) [NCBI Gene 12478], Tcl1 (T cell lymphoma breakpoint 1) [NCBI Gene 21432] {aka Tcl1a}
- **Diseases:** hepatomegaly (MESH:D006529), CLL (MESH:D015451), dislocation (MESH:D004204), splenomegaly (MESH:D013163)
- **Species:** Mus musculus (house mouse, species) [taxon 10090]
- **Cell lines:** C57BL/6J — Mus musculus (Mouse), Transformed cell line (CVCL_C0MW), H11 — Mus musculus (Mouse), Transformed cell line (CVCL_6762)

## Full text

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## Figures

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## References

20 references — full list in the complete paper: https://tomesphere.com/paper/PMC12268288/full.md

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Source: https://tomesphere.com/paper/PMC12268288