# ARID1B Gene Deletion Promotes the Proliferation, Migration and Invasion of NSCLC Cells

**Authors:** Linlin ZHU, Xuchao ZHANG

PMC · DOI: 10.3779/j.issn.1009-3419.2025.101.04 · Chinese Journal of Lung Cancer · 2025-03-20

## TL;DR

Deleting the ARID1B gene increases the growth and spread of non-small cell lung cancer cells, possibly through activating certain signaling pathways.

## Contribution

This study is the first to systematically investigate how ARID1B gene deletion affects NSCLC cell behavior and its underlying molecular mechanisms.

## Key findings

- ARID1B deletion enhances NSCLC cell proliferation, migration, and invasion in vitro and in vivo.
- Low ARID1B expression correlates with poor survival in lung cancer patients.
- ARID1B deletion activates MAPK and PI3K/Akt pathways and induces epithelial-mesenchymal transition.

## Abstract

SWI/SNF染色质重塑复合物（switch/sucrose nonfermentable chromatin-remodeling complex）的异常与多种癌症密切相关，ARID1B（AT-rich interaction domain 1B）是SWI/SNF复合物的核心亚基之一。ARID1B基因突变或拷贝数缺失与DNA损伤反应受损、染色质可及性改变有关。然而，ARID1B缺失是否影响非小细胞肺癌（non-small cell lung cancer, NSCLC）细胞的增殖、迁移和侵袭能力及其分子机制仍缺乏系统研究。本研究旨在揭示ARID1B基因缺失对NSCLC细胞恶性表型的调控作用及其分子机制。

通过公共数据库分析ARID1B基因与肺癌患者预后之间的相关性以及其在肺癌组织中的表达水平。CRISPR/Cas9（clustered regularly interspaced short palindromic repeat）技术构建ARID1B基因稳定敲除（knockout, KO）的细胞株。采用平板克隆实验检测细胞增殖情况，Transwell细胞迁移、侵袭实验检测细胞迁移能力变化。RNA-Seq进行差异基因的表达、富集分析。利用蛋白印迹（Western blot, WB）验证ARID1B基因敲除效果，检测上皮间充质转化（epithelial-mesenchymal transition, EMT）标志物、促分裂素原活化蛋白激酶（mitogen-activated protein kinases, MAPK）信号通路相关蛋白变化。构建裸鼠成瘤模型，并比较对照和ARID1B缺失细胞的成瘤能力。

低ARID1B表达与肺癌患者不良预后有显著关联，其总生存期较短。ARID1B在肺癌细胞中的表达水平较正常细胞显著降低。ARID1B缺失型细胞增殖、迁移和侵袭能力增强。动物实验中，ARID1B基因缺失组成瘤速度加快。RNA-Seq结果进行富集分析可见差异基因主要在MAPK、磷脂酰肌醇3-激酶/蛋白激酶B（phosphoinositide 3-kinase/protein kinase B, PI3K/Akt）等信号通路富集。WB证明ARID1B基因缺失细胞E-cadherin、N-cadherin、Vimentin表达发生变化，MAPK、p-MAPK表达增加。

成功建立A549-ARID1B KO和PC9-ARID1B KO细胞株，ARID1B缺失细胞株在体外、体内生物学行为水平和转录组测序水平均提示具有高迁移、侵袭、增殖潜能。EMT标志物表达的变化、MAPK信号通路的激活提示ARID1B缺失型NSCLC可能的转移机制。

sgRNA sequences

Primer sequences for genomic DNA amplification

## Linked entities

- **Genes:** ARID1B (AT-rich interaction domain 1B) [NCBI Gene 57492]
- **Proteins:** shg (shotgun), CadN (Cadherin-N), PRELID1 (PRELI domain containing 1), MAPK (mitogen activated kinase-like protein), rl (rolled)
- **Diseases:** non-small cell lung cancer (MONDO:0005233), lung cancer (MONDO:0005138)

## Full-text entities

- **Genes:** CDH1 (cadherin 1) [NCBI Gene 999] {aka Arc-1, BCDS1, CD324, CDHE, ECAD, LCAM}, PTK2B (protein tyrosine kinase 2 beta) [NCBI Gene 2185] {aka CADTK, CAKB, FADK2, FAK2, PKB, PTK}, AKT1 (AKT serine/threonine kinase 1) [NCBI Gene 207] {aka AKT, PKB, PKB-ALPHA, PRKBA, RAC, RAC-ALPHA}, CDH2 (cadherin 2) [NCBI Gene 1000] {aka ACOGS, ADHD8, ARVD14, CD325, CDHN, CDw325}, ARID1B (AT-rich interaction domain 1B) [NCBI Gene 57492] {aka 6A3-5, BAF250B, BRIGHT, CSS1, DAN15, ELD/OSA1}, VIM (vimentin) [NCBI Gene 7431]
- **Diseases:** lung cancer (MESH:D008175), tumorigenic (MESH:D002471), cancer (MESH:D009369), NSCLC (MESH:D002289), metastasis (MESH:D009362)
- **Species:** Mus musculus (house mouse, species) [taxon 10090], Homo sapiens (human, species) [taxon 9606]
- **Cell lines:** A549 — Homo sapiens (Human), Lung adenocarcinoma, Cancer cell line (CVCL_0023), PC9 — Homo sapiens (Human), Lung adenocarcinoma, Cancer cell line (CVCL_B260)

## Full text

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## Figures

7 figures with captions in the complete paper: https://tomesphere.com/paper/PMC11986678/full.md

## References

21 references — full list in the complete paper: https://tomesphere.com/paper/PMC11986678/full.md

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Source: https://tomesphere.com/paper/PMC11986678