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Author Spotlight: Exploring the Role of Ion Channels in Cancer: Characterization and Potential Treatment Approaches
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Author Spotlight: Exploring the Role of Ion Channels in Cancer: Characterization and Potential Treatment Approaches

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Targeting T-type channels in cancer: What is on and what is off?

Anna Visa1, Lía Alza1, Adrian Casas-Benito1

  • 1Universitat de Lleida-IRBlleida, Lleida, Spain.

Drug Discovery Today
|November 28, 2021
PubMed

Insights

T-type calcium channels (TTCCs) are implicated in tumor progression, but their precise roles in cancer physiology require further study. Many drug effects on cancer are off-target, necessitating a clearer understanding of TTCCs for effective cancer therapies.

Area of Science:

  • Oncology
  • Molecular Biology
  • Pharmacology

Background:

  • T-type calcium channels (TTCCs) have been linked to tumor progression over the past two decades.
  • Pharmacological blockers of TTCCs have shown cytotoxic effects in vitro and preclinical cancer models.
  • The exact physiological roles of TTCCs in cancer remain largely unclear.

Purpose of the Study:

  • To review the evidence for signaling pathways and cellular processes influenced by TTCC activity in cancer.
  • To critically analyze the on-target versus off-target effects of TTCC-targeting drugs.
  • To guide the development of TTCC-based cancer therapies.

Main Methods:

  • Literature review focusing on studies involving TTCCs in cancer.
  • Analysis of data derived from pharmacological blockade of TTCCs.
  • Inclusion of studies utilizing gene silencing or channel activation for TTCC investigation.

Main Results:

  • Evidence suggests TTCC activity influences various cancer-related signaling pathways and cellular processes.
  • A significant portion of the observed cytotoxicity from TTCC blockers may be due to off-target effects.
  • Distinguishing on-target from off-target activities is crucial for understanding TTCCs' physiological roles.

Conclusions:

  • The precise physiological functions of TTCCs in cancer are not fully elucidated.
  • Drug-induced cytotoxicity in cancer treatment is not solely attributable to direct TTCC inhibition.
  • Further research is needed to differentiate on-target and off-target effects for developing precise TTCC-based cancer therapies.
Keywords:
ApoptosisAutophagyCa(2+) signalingCancer cellsChemotherapyOn/off-target effectsPharmacological blockersRepurposingT-type Ca(2+) channels

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