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Review
. 2021 Mar 16:13:2483-2498.
doi: 10.2147/CMAR.S289819. eCollection 2021.

WNT5a in Colorectal Cancer: Research Progress and Challenges

Guangshun Sun #  1 , Liangliang Wu #  1 , Guoqiang Sun  1 , Xuesong Shi  1 , Hongyong Cao  1 , Weiwei Tang  2
Affiliations
Review

WNT5a in Colorectal Cancer: Research Progress and Challenges

Guangshun Sun et al. Cancer Manag Res. .

Abstract

Despite the clinical development of new adjuvant and neoadjuvant chemotherapy drugs, colorectal cancer is still one of the leading causes of cancer-related death in human beings. WNT5a, an autocrine and paracrine β-catenin independent ligand, has been shown to induce tumor inhibition and carcinogenic signals, depending on the type of cancer. In patients with colorectal cancer, WNT5a triggers a variety of downstream signaling pathways, which mainly affect the migration and invasion of tumor cells. This article reviews the mechanism and therapeutic potential of WNT5a in colorectal cancer. In short, an in-depth understanding of the role of WNT5a in colorectal cancer is very helpful to better deal with this disease.

Keywords: WNT; WNT5a; colorectal cancer; therapy.

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Conflict of interest statement

The authors declare that they have no competing interests.

Figures

Figure 1
Figure 1
Canonical WNT signaling is transduced by the WNT/β-catenin and WNT/STOP (stabilization of proteins) signaling cascades through Frizzled (FZD) and LRP5/6 receptors, whereas non-canonical WNT signaling is transduced by the WNT/PCP (planar cell polarity), WNT/RTK (receptor tyrosine kinase), and WNT/Ca2+ signaling cascades through FZD and/or ROR1/ROR2/RYK receptors.
Figure 2
Figure 2
In WNT/PCP signaling pathway, WNT5a can activate Dvl by forming complexes with FZD and Ror2 receptors, and furthermore, small GTP enzymes of the Rho family are activated, including RhoA and Rac, and their downstream effectors, Rho-associated protein kinase (ROCK), the actin-binding protein, Filamin A and c-Jun N-terminal protein kinase (JNK), and in turn PCP pathway is activated. This process leads to the rearrangement of the cytoskeleton and regulating polarized cell morphology and migration within tissues. WNT5a activation of the WNT/Ca2+ signaling pathway leads to the mobilization of free intracellular calcium, which regulates many cellular processes, including actin cytoskeleton remodeling and cell motility through activation of calcium-dependent signaling molecules. In the canonical pathway, WNT5a plays two roles. On the one hand, WNT5a can activate canonical pathways to regulate embryogenesis and cell fate specificity. On the other hand, WNT5a can repress the canonical pathway by promoting glycogen synthase kinase3-independent degradation of β-catenin in regulating mammalian limb development.,
Figure 3
Figure 3
WNT5a promotes the occurrence and development of colorectal cancer through multiple signal transduction pathways.
Figure 4
Figure 4
WNT5a inhibits the occurrence and development of colorectal cancer through multiple signal transduction pathways.
See this image and copyright information in PMC

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