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Drugs Targeting Cancer Signaling Pathways: Dissecting Mechanisms to Unlock New Therapeutic Targets

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Oncology".

Deadline for manuscript submissions: 30 July 2025 | Viewed by 415

Special Issue Editor


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Guest Editor
Normandie University, UNIROUEN, IRIB, Inserm, U1234, 76183 Rouen, France
Interests: childhood cancers; blood cancers; ion channels; calcium signaling; therapeutic resistance; signaling transduction; drug mechanisms of action

Special Issue Information

Dear Colleagues,

Cancer cells continuously evolve survival strategies, enabling resistance to therapeutic drugs. This resistance remains a major challenge, limiting the efficacy of existing treatments. Oncogenic signaling pathways orchestrate various cellular and molecular processes, including survival, proliferation, apoptosis, metabolism, epigenetic modifications, and tumor suppressor regulation. Identifying and targeting key signaling pathways with optimal anticancer activity and minimal toxicity has emerged as a promising approach to overcoming this hurdle.

This Special Issue will cover in vitro and in vivo studies exploring advances in deciphering cancer signaling mechanisms underlying resistance to therapies and the role of novel drugs in modulating these signaling pathways to accelerate the discovery of new therapeutic targets.

In this Special Issue, original research articles and reviews on solid and hematological malignancies are welcome.

Dr. Souleymane Abdoul-Azize
Guest Editor

Manuscript Submission Information

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Keywords

  • small-molecule drugs
  • signal transduction
  • therapeutic targets
  • therapeutic resistance
  • oncogenic signaling
  • novel biomarkers
  • cancer therapy
  • cancer signaling pathways
  • immunotherapy

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Published Papers (1 paper)

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Research

12 pages, 2091 KiB  
Article
Opposing Calcium-Dependent Effects of GsMTx4 in Acute Lymphoblastic Leukemia: In Vitro Proliferation vs. In Vivo Survival Advantage
by Souleymane Abdoul-Azize, Rachid Zoubairi and Olivier Boyer
Int. J. Mol. Sci. 2025, 26(10), 4822; https://doi.org/10.3390/ijms26104822 - 18 May 2025
Viewed by 289
Abstract
Mechanogated (MG) ion channels play a crucial role in mechano-transduction and immune cell regulation, yet their impact on blood cancers, particularly acute lymphoblastic leukemia (ALL), remains poorly understood. This study investigates the pharmacological effects of GsMTx4, an MG channel inhibitor, in human ALL [...] Read more.
Mechanogated (MG) ion channels play a crucial role in mechano-transduction and immune cell regulation, yet their impact on blood cancers, particularly acute lymphoblastic leukemia (ALL), remains poorly understood. This study investigates the pharmacological effects of GsMTx4, an MG channel inhibitor, in human ALL cells both in vitro and in vivo. Unexpectedly, we found that GsMTx4 remarkably increased basal calcium (Ca2+) levels in ALL cells through constitutive Ca2+ entry and enhanced store-operated Ca2⁺ influx upon thapsigargin stimulation. This increase in basal Ca2+ signaling promoted ALL cell viability and proliferation in vitro. Notably, chelating intracellular Ca2+ with BAPTA-AM reduces GsMTx4-mediated leukemia cell viability and proliferation. However, in vivo, GsMTx4 decreases cytosolic Ca2+ levels in Nalm-6 GFP⁺ cells isolated from mouse blood, effectively countering leukemia progression and significantly extending survival in NSG mice transplanted with leukemia cells (median survival: GsMTx4 vs. control, 37.5 days vs. 29 days, p = 0.0414). Our results highlight the different properties of GsMTx4 activity in in vitro and in vivo models. They also emphasize that Ca2+ signaling is a key vulnerability in leukemia, where its precise modulation dictates disease progression. Thus, targeting Ca2+ channels could offer a novel therapeutic strategy for leukemia by exploiting Ca2+ homeostasis. Full article
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