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Review
. 2023 Apr 11;11(2):701-710.
doi: 10.1016/j.gendis.2023.03.012. eCollection 2024 Mar.

The Wnt-dependent and Wnt-independent functions of BCL9 in development, tumorigenesis, and immunity: Implications in therapeutic opportunities

Affiliations
Review

The Wnt-dependent and Wnt-independent functions of BCL9 in development, tumorigenesis, and immunity: Implications in therapeutic opportunities

Minjie Wu et al. Genes Dis. .

Abstract

B-cell CLL/lymphoma 9 (BCL9) is considered a key developmental regulator and a well-established oncogenic driver in multiple cancer types, mainly through potentiating the Wnt/β-catenin signaling. However, increasing evidences indicate that BCL9 also plays multiple Wnt-independent roles. Herein, we summarized the updates of the canonical and non-canonical functions of BCL9 in cellular, physiological, or pathological processes. Moreover, we also concluded that the targeted inhibitors disrupt the interaction of β-catenin with BCL9 reported recently.

Keywords: BCL9; Development; Immunity; Multifaceted functions; Therapeutic target; Tumorigenesis.

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Figures

Fig. 1
Figure 1
BCL9 functions as a Wnt coactivator. (A) BCL9 functions as a coactivator of Wnt/β-catenin dependent transcription. BCL9 functions by recruiting the transcriptional coactivator PYGO to the β-catenin/TCF complex, which is required for the transcription of Wnt target genes. (B) The specific domains of BCL9 interact with PYGO and β-catenin.
Fig. 2
Figure 2
The diverse mechanisms of BCL9 independent of canonical Wnt-signaling. (A) BCL9 competes with Clathrin to promote mitotic Wnt/STOP. (B) BCL9 and Hippo signaling pathway. (C) BCL9 interacts with paraspeckle proteins and microRNAs.
Fig. 3
Figure 3
BCL9 is involved in the modulation of the tumor microenvironment. (A) The BCL9-STAT3 axis drives cancer progression and invasion. (B) BCL9 regulates immune cell infiltration in tumor cells.
Fig. 4
Figure 4
The diagram of BCL9 and the drugs target BCL9.

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