The PI3K Pathway in Human Disease from the Bench to the Clinic: There and Back Again

A special issue of Kinases and Phosphatases (ISSN 2813-3757).

Deadline for manuscript submissions: 28 February 2025 | Viewed by 2126

Special Issue Editors


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Guest Editor
Department of Biomedical, Metabolic and Neuronal Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy
Interests: cellular signaling; lipid-activated protein kinases; identification of isoform-specific substrates of the AKT protein kinase; modulation of glycolytic vs. oxidative cellular phenotypes by signaling pathways in acute leukemia models; definition of the phosphorylome of primary blast cells from leukemia patients, and its modulation by the PI3K pathway; kinase-inhibitor therapy in hematological malignancies
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Guest Editor
1. National Institute of Molecular Genetics (INGM), 20122 Milan, Italy
2. The FIRC Institute of Molecular Oncology (IFOM), 20139 Milan, Italy
Interests: phosphoinositides; mechanobiology; immunology; cancer research; LINC-complex

Special Issue Information

Dear Colleagues,

Signaling of the phosphatidylinositol-3-kinase (PI3K)/AKT/mammalian target of rapamycin (mTOR) represents a key intracellular pathway, regarded as a master regulator of cell processes and cellular functions (such as cell growth, proliferation, differentiation, motility, survival, and intracellular trafficking). However, it is also recognized as one of the most frequently altered pathways in human cancer, comprising the oncogene PIK3CA and the tumor suppressor gene PTEN, and dysfunction of the PI3K/AKT/mTOR pathway is implicated in several severe conditions, including cancer, cardiovascular disease, type 2 diabetes, autoimmune disorders, and neurological conditions. Despite its attractivity as a therapeutic target for the treatment of cancer in primis, as well as an accruing body of scientific knowledge and massive efforts devoted to the development of drug targeting PI3K signaling, only few molecules have translated into the clinic, and more are currently employed in clinical trial evaluation.

On these bases, this Special Issue aims to provide a platform for bench and clinic research on the different aspects and the numerous players of the PI3K pathway, with a special focus on resistance mechanisms in relation to PI3K/AKT/mTOR inhibition. We warmly welcome your submissions of original papers and reviews based on results from recent viewpoints.

This Special Issue is led by Dr. Sandra Marmiroli and Dr. Alessandro Poli, assisted by our Guest Editors' assistant editor Dr. Francesca Paganelli <> (Department of Biomedical and Neuromotor Sciences, Alma Mater Studiorum, University of Bologna, 40136 Bologna, Italy). 

Prof. Dr. Sandra Marmiroli
Dr. Alessandro Poli
Guest Editors

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Keywords

  • PI3K pathway
  • phosphatidylinositol-3-kinase
  • AKT
  • mTOR
  • inhibition
  • cancer
  • cardiovascular disease
  • type 2 diabetes
  • autoimmune disorders
  • human disease

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Published Papers (1 paper)

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Research

15 pages, 2638 KiB  
Article
Short-Chain Fatty Acids Suppress mTOR Signaling in Colon Cancer Cells via Long Non-Coding RNA RMST
by Jiuhui Wang, Yande Guo, Xiangwei Fang, Yuanqin Zhang and Daotai Nie
Kinases Phosphatases 2024, 2(2), 136-150; https://doi.org/10.3390/kinasesphosphatases2020008 - 1 Apr 2024
Viewed by 1531
Abstract
Short-chain fatty acids (SCFAs), derived from fermentation of dietary fibers and resistant starch by the microbiota in the colon, exert multiple effects on colonic functions, including tumor suppressing activities. Our previous studies found that SCFAs induced autophagy in colon cancer cells via downregulating [...] Read more.
Short-chain fatty acids (SCFAs), derived from fermentation of dietary fibers and resistant starch by the microbiota in the colon, exert multiple effects on colonic functions, including tumor suppressing activities. Our previous studies found that SCFAs induced autophagy in colon cancer cells via downregulating mTOR signaling, but the mechanism involved in mTOR suppression still needs to be defined. In this study, we identified rhabdomyosarcoma 2 associated transcript (RMST), a long non-coding RNA, as a key mediator for SCFAs to suppress mTOR activation in colon cancer cells. RMST could be significantly induced by SCFAs in a time- and dose-dependent manner. RMST, by itself, was sufficient to suppress mTOR signaling and augment autophagosome formation. Depletion of RMST, through siRNA or CRISPR knockdown, reduced the abilities of SCFAs to suppress mTOR activation or to induce autophagic responses. RMST increased the expression level of TSC2, a negative regulator of the mTOR signaling pathway. Our data delineate a novel RMST/TSC2 cellular pathway, enlisted by SCFAs, to modulate mTOR activities in colon cancer cells. Full article
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