Crosstalk between calcium and reactive oxygen species signaling in cancer

Area of Science:

• Cellular signaling
• Oxidative stress biology
• Cancer research

Background:

• Calcium (Ca²⁺) and reactive oxygen species (ROS) signaling pathways exhibit reciprocal regulation across various subcellular locations.
• Ca²⁺ channels in cell surface and intracellular organelles are modulated by redox modifications.
• Ca²⁺ signaling influences cellular ROS generation from sources like NADPH oxidases and mitochondria.

Purpose of the Study:

• To review the regulation of Ca²⁺ channels and transporters by oxidants.
• To discuss the potential consequences of ROS-Ca²⁺ interplay in tumor cells.
• To highlight the significance of this crosstalk in tumorigenesis.

Main Methods:

• Literature review of existing research on Ca²⁺ and ROS signaling.
• Analysis of studies investigating redox regulation of Ca²⁺ channels.
• Examination of evidence linking ROS-Ca²⁺ interplay to cancer and other disease models.

Main Results:

• Ca²⁺ channels and transporters are demonstrably regulated by oxidants.
• ROS-Ca²⁺ signaling plays roles in both cell death (apoptosis) and pro-survival pathways.
• Evidence suggests significant importance of this crosstalk in tumorigenesis, though further research is needed.

Conclusions:

• The interplay between Ca²⁺ and ROS is a critical regulatory mechanism with implications for cellular function.
• Understanding ROS-Ca²⁺ crosstalk is crucial for elucidating mechanisms of tumorigenesis.
• Targeting this interplay may offer novel therapeutic strategies for cancer.