Inhibition of the Wnt/b-catenin pathway using PNU-74654 reduces tumor growth in in vitro and in vivo models of colorectal cancer

Amerizadeh, Forouzan, Rahmani, Farzad, Maftooh, Mina, Nasiri, Seyedeh-Najibeh, Hassanian, Seyed Mahdi, Giovannetti, Elisa, Moradi-Marjaneh, Reyhaneh, Sabbaghzadeh, Reihaneh, Shahidsales, Soodabeh, Joudi-Mashhad, Mona, Ghayour-Mobarhan, Majid, Ferns, Gordon A, Khazaei, Majid and Avan, Amir (2022) Inhibition of the Wnt/b-catenin pathway using PNU-74654 reduces tumor growth in in vitro and in vivo models of colorectal cancer. Tissue and Cell, 77. a101853. ISSN 0040-8166

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Abstract

Background
Colorectal-cancer (CRC) is amongst the most lethal-cancers, mainly due to its metastatic spread and drug chemoresistance. Hence there is a need for new approaches to either increase the efficacy of current therapy or introduce new therapies that have greater efficacy. There is increasing evidence that dysregulation of WNT-signaling-pathway plays an essential role in the development and prognosis of CRC. Here we have investigated the therapeutic potential of targeting the WNT/b-catenin pathway using a novel Wnt/b-catenin inhibitor, PNU-74654, in combination with 5-FU in CRC.

Methods
The anti-proliferative-effect of PNU-74654 was evaluated in two-/three-dimensional cell models. The activity of agents on cell growth, migration, invasion, cell cycle and apoptosis was evaluated by MTT, wound healing assay, invasion, FACS, and annexin V staining, respectively. The oxidant/antioxidant levels were also assessed by determining the level of MDA, SOD, as well as using the DCFH-DA assay. We used a xenograft model of CRC to investigate PNU-74654 activity alone and in combination with 5-FU follow by histological staining and biochemical and gene expression analyses by RT-PCR and western blot.

Results
PNU-74654 inhibited cell-growth and synergistically affected the anti-tumor properties of 5-FU via modulation of Cyclin D1 and survivin. This agent inhibited the migration/invasion of colorectal cancer cells via perturbation of E-cadherin. Furthermore, PNU-74654 inhibited the tumor growth, which was more pronounced using the PNU-74654 plus 5-FU combination via induction of reactive oxygen species, down-regulation of SOD and modulation of MCP-1, P53, TNF-α.

Conclusions
Our finding demonstrated that PNU-74654 can target Wnt-pathway, interfere with cell-proliferation, induced-cell death, reduced-migration and interact with 5-FU, supporting further investigations on this therapeutic-approach for colorectal cancer.

Item Type: Article
Keywords: Cancer, Digestive Diseases, Colo-Rectal Cancer, 5.1 Pharmaceuticals, 2.1 Biological and endogenous factors, Cancer
Schools and Departments: Brighton and Sussex Medical School > Division of Medical Education
SWORD Depositor: Mx Elements Account
Depositing User: Mx Elements Account
Date Deposited: 12 Jul 2022 16:36
Last Modified: 12 Jul 2022 16:45
URI: http://sro.sussex.ac.uk/id/eprint/106922

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