Cited by 156PI3K/AKT/mTOR signaling in cancerWnt/β-catenin signaling in development and cancerColorectal Cancer Treatments and Studies

The DOI matches its Crossref record; 159 of the 167 references it cites were found in a registry or an index.

Are Wnt/β-Catenin and PI3K/AKT/mTORC1 Distinct Pathways in Colorectal Cancer?

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Prossomariti, Anna, Piazzi, Giulia, Alquati, Chiara, Ricciardiello, Luigi·2020·Cellular and Molecular Gastroenterology and Hepatology

Abstract

Wnt/β-catenin and phosphatidylinositol-3-kinase/protein kinase B/mammalian target of rapamycin complex 1 (PI3K/AKT/mTORC1) pathways both are critically involved in colorectal cancer (CRC) development, although they are implicated in the modulation of distinct oncogenic mechanisms. In homeostatic and pathologic conditions, these pathways show a fine regulation based mainly on feedback mechanisms, and are connected at multiple levels involving both upstream and downstream common effectors. The ability of the Wnt/β-catenin and PI3K/AKT/mTORC1 pathways to reciprocally control themselves represents one of the main resistance mechanisms to selective inhibitors in CRC, leading to the hypothesis that in specific settings, particularly in cancer driven by genetic alterations in Wnt/β-catenin signaling, the relationship between Wnt/β-catenin and PI3K/AKT/mTORC1 pathways could be so close that they should be considered as a unique therapeutic target. This review provides an update on the Wnt/β-catenin and PI3K/AKT/mTORC1 pathway interconnections in CRC, describing the main molecular players and the potential implications of combined inhibitors as an approach for CRC chemoprevention and treatment.

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Crossref · 10.1016/j.jcmgh.2020.04.007

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Figure 1 Main mechanisms of Wnt/β-catenin and PI3K/AKT/mTORC1 pathway interconnections. (A) The Wnt/β-catenin pathway modulates transcription through β-catenin and translation via mTORC1 regulating GSK3β activity.96 (Bi) mTORC1 inhibition by the rapalog everolimus induces Wnt/β-catenin signaling activation by increasing the expression of FZD receptor levels with a mechanism dependent on DVL. (Bii) Activated mTORC1 promotes the association between DVL and the clathrin Adaptor protein 2 (AP-2) adaptor with a consequent reduction of FZD expression levels, with a negative regulation of Wnt/β-catenin signaling.116 (C) Wnt/β-catenin signaling switches off the mTORC1 cascade by inducing its negative regulator DEPTOR.117 (D) Inhibited PI3K/AKT/mTORC1 pathway leads to increased eIF4E phosphorylation via MNK.124 Phosphorylated eIF4E is associated with β-catenin nuclear translocation and signaling activation.127 β-CAT, β-catenin; β-TRCP, Beta-transducin repeat containing E3 ubiquitin protein ligase.
Figure 1 Main mechanisms of Wnt/β-catenin and PI3K/AKT/mTORC1 pathway interconnections. (A) The Wnt/β-catenin pathway modulates transcription through β-catenin and translation via mTORC1 regulating GSK3β activity.96 (Bi) mTORC1 inhibition by the rapalog everolimus induces Wnt/β-catenin signaling activation by increasing the expression of FZD receptor levels with a mechanism dependent on DVL. (Bii) Activated mTORC1 promotes the association between DVL and the clathrin Adaptor protein 2 (AP-2) adaptor with a consequent reduction of FZD expression levels, with a negative regulation of Wnt/β-catenin signaling.116 (C) Wnt/β-catenin signaling switches off the mTORC1 cascade by inducing its negative regulator DEPTOR.117 (D) Inhibited PI3K/AKT/mTORC1 pathway leads to increased eIF4E phosphorylation via MNK.124 Phosphorylated eIF4E is associated with β-catenin nuclear translocation and signaling activation.127 β-CAT, β-catenin; β-TRCP, Beta-transducin repeat containing E3 ubiquitin protein ligase.CC BY-NC-ND · PubMed Central
Figure 2 Resistance mechanisms to rapamycin and TNKSi. (Ai) mTORC1 inhibition promotes GSK3β nuclear translocation. Nuclear GSK3β mediates rapamycin-induced cytostasis by increasing the phosphorylation of Forkhead Box K1 and General Transcription Factor IIF Subunit 1. (Aii) In conditions of high cellular levels of the GSK3β nuclear exporter Frequently rearranged in advanced T-cell lymphomas 1/2 (FRAT 1/2), upon mTORC1 inhibition, nuclear GSK3β levels are not sufficient to induce cytostasis leading to rapamycin resistance.113,114 (Bi) mTORC1 induction is associated with TNKSi resistance and persistent Wnt/β-catenin signaling activation. (Bii) mTORC1 activity reduction by temsirolimus restores the sensitivity to TNKSi, leading to Wnt/β-catenin down-regulation.144 β-CAT, β-catenin; β-TRCP, Beta-transducin repeat containing E3 ubiquitin protein ligase; CKI, Casein Kinase I.
Figure 2 Resistance mechanisms to rapamycin and TNKSi. (Ai) mTORC1 inhibition promotes GSK3β nuclear translocation. Nuclear GSK3β mediates rapamycin-induced cytostasis by increasing the phosphorylation of Forkhead Box K1 and General Transcription Factor IIF Subunit 1. (Aii) In conditions of high cellular levels of the GSK3β nuclear exporter Frequently rearranged in advanced T-cell lymphomas 1/2 (FRAT 1/2), upon mTORC1 inhibition, nuclear GSK3β levels are not sufficient to induce cytostasis leading to rapamycin resistance.113,114 (Bi) mTORC1 induction is associated with TNKSi resistance and persistent Wnt/β-catenin signaling activation. (Bii) mTORC1 activity reduction by temsirolimus restores the sensitivity to TNKSi, leading to Wnt/β-catenin down-regulation.144 β-CAT, β-catenin; β-TRCP, Beta-transducin repeat containing E3 ubiquitin protein ligase; CKI, Casein Kinase I.CC BY-NC-ND · PubMed Central

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Metadata

Authors
Prossomariti, A., Piazzi, G., Alquati, C., & Ricciardiello, L.
Affiliations
IRCCS Azienda Ospedliero-Universitaria di Bologna Policlinico di Sant'Orsola (IT)
Corresponding author
  • Prossomariti, Anna
  • Ricciardiello, Luigi
Venue
Cellular and Molecular Gastroenterology and Hepatology
Publisher
Elsevier BV
Published
2020
Volume
10
Issue
3
Pages
491-506
ISSN
2352-345X (ISSN-L)
OpenAlex
W3017979273
Cited by
155
References
167
Citations by year
2026: 20 · 2025: 30 · 2024: 36 · 2023: 25 · 2022: 19 · 2021: 20 · 2020: 5
FWCI
1.65
Type
journal article
Language
en
Open access
Locations
  • Cellular and Molecular Gastroenterology and Hepatology (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Archivio istituzionale della ricerca (Alma Mater Studiorum Università di Bologna) (submittedVersion, cc-by-nc-nd)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Associazione Italiana per la Ricerca sul Cancro
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › PI3K/AKT/mTOR signaling in cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Wnt/β-catenin signaling in development and cancer
  • Health Sciences › Medicine › Oncology › Colorectal Cancer Treatments and Studies
Keywords
Wnt/β-catenin signaling, PI3K/Akt/mTORC1 pathway, colorectal cancer, pathway crosstalk, intestinal tumorigenesis, drug resistance, chemoprevention, feedback regulation
MeSH terms
Mechanistic Target of Rapamycin Complex 1, Phosphoinositide-3 Kinase Inhibitors, Animals, Antineoplastic Combined Chemotherapy Protocols, Disease Models, Animal, Humans, Colorectal Neoplasms, Signal Transduction, Gene Expression Regulation, Neoplastic, Drug Resistance, Neoplasm, Phosphatidylinositol 3-Kinases, Cell Line, Tumor, Cell Proliferation, Proto-Oncogene Proteins c-akt, Wnt Proteins, beta Catenin

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