The small molecule raptinal can simultaneously induce apoptosis and inhibit PANX1 activity
Jascinta P Santavanond1,2, Yu-Hsin Chiu3,4, Rochelle Tixeira5,6
1Department of Biochemistry and Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, 3086, Australia.
Cell Death & Disease
|February 9, 2024
Summary
Raptinal, a pro-apoptotic compound, was found to also inhibit Pannexin 1 (PANX1) channels. This dual action offers new therapeutic potential for cancer and infectious diseases.
Area of Science:
- Biochemistry
- Cell Biology
- Pharmacology
Background:
- Small molecules activating programmed cell death are crucial for research and therapeutics.
- Raptinal is a known pro-apoptotic compound that triggers the intrinsic apoptotic pathway.
Purpose of the Study:
- To investigate the dual role of raptinal in apoptosis induction and Pannexin 1 (PANX1) channel activity.
- To explore raptinal's potential as a novel therapeutic agent and research tool.
Main Methods:
- Biochemical assays
- Cell biological studies
- Electrophysiological recordings
Main Results:
- Raptinal simultaneously induces apoptosis and inhibits caspase-activated PANX1 channels.
- Raptinal's PANX1 inhibition mechanism is distinct from known inhibitors.
- Raptinal interferes with PANX1-regulated processes like ATP release and NLRP3 inflammasome activation.
Conclusions:
- Raptinal is the first compound identified to both induce apoptosis and inhibit PANX1 channels.
- These findings have significant implications for cell death research and the development of new PANX1 inhibitors.
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