Involvement of Blnk and Foxo1 in tumor suppression in BCR‑ABL1‑transformed pro‑B cells.
Involvement of Blnk and Foxo1 in tumor suppression in BCR‑ABL1‑transformed pro‑B cells.
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Blnk 和 Foxo1 参与 BCR-ABL1 转化的 pro-B 细胞的肿瘤抑制
DOI:
10.3892/or.2020.7888
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发表时间:
2021-03
期刊:
影响因子:
4.2
通讯作者:
Ji Y
中科院分区:
文献类型:
--
作者:
Zhang P;Wang Y;Qin M;Li D;Odhiambo WO;Yuan M;Lv Z;Liu C;Ma Y;Dong Y;Ji Y
Oncogenic Bcr-Abl kinase mimics pre-B cell receptor (pre-BCR) survival signals in BCR-ABL1-positive B-cell acute lymphoblastic leukemia (BCR-ABL1+ B-ALL), driving B-cell progenitor malignant transformation; thus, defining a particularly unfavorable prognosis for patients. During B-cell development, pre-BCR differentiation signaling components terminate proliferative expansion and promote B-cell maturation. To study whether pre-BCR differentiation signaling components regulate the initiation and development of BCR-ABL1+ B-ALL, the tumor suppression mechanism of differentiation-related signaling molecules in BCR-ABL1-transformed pro-B cells were analyzed. The results demonstrated that Bcr-Abl kinase activated the PI3K/Akt pathway, promoting cell growth, and upregulated Aid expression, increasing genomic instability in pro-B cells. These findings suggest that Bcr-Abl kinase mediates pro-B cell malignant transformation. Furthermore, the present data revealed that BCR-ABL1 oncogenic stress triggered enhanced expression of B-cell differentiation components B-cell linker (Blnk) and forkhead box protein O1 (Foxo1) in BCR-ABL1 transformed pro-B cells. Using the CRISPR/Cas9-mediated Blnk or Foxo1 knockout BCR-ABL1-transformed pro-B cells, it was identified that, in BCR-ABL1-transformed pro-B cells, Blnk and Foxo1 reduced Bcr-Abl kinase activity to induce cell cycle arrest and decrease genomic instability. In addition, Blnk suppressed the PI3K/Akt pathway to reduce Foxo1 phosphorylation and heighten the Foxo1 activity, indicating that, in BCR-ABL1-transformed pro-B cells, Foxo1 participated in the regulation of Bcr-Abl kinase by Blnk. The present data highlighted the antitumor mechanisms of Blnk and Foxo1 in the regulation of Bcr-Abl kinase, and thus, may offer an alternative therapeutic strategy to Bcr-Abl kinase regulation in BCR-ABL1+ B-ALL.
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影响因子:
78.5
作者:
Collado, Manuel;Serrano, Manuel
通讯作者:
Serrano, Manuel
影响因子:
11.4
作者:
Iacobucci, I.;Lonetti, A.;Martinelli, G.
通讯作者:
Martinelli, G.
影响因子:
30.5
作者:
Flemming, A;Brummer, T;Jumaa, H
通讯作者:
Jumaa, H
DOI:
10.1038/sj.thj.6200032
发表时间:
2000-01-01
期刊:
The hematology journal : the official journal of the European Haematology Association
影响因子:
--
作者:
Bassan, R;Rohatiner, A Z;Barbui, T
通讯作者:
Barbui, T
影响因子:
0.7
作者:
McCarron SL;Maher K;Kelly J;Ryan MF;Langabeer SE
通讯作者:
Langabeer SE