Pyroptotic T cell-derived active IL-16 has a driving function in ovarian endometriosis development

Area of Science:

• Inflammation research
• Cellular biology
• Reproductive medicine

Background:

• Endometriosis affects 6-10% of women, causing pain and infertility.
• The inflammatory mechanisms underlying endometriosis are not well understood.
• Interleukin-16 (IL-16) is implicated in inflammatory processes.

Purpose of the Study:

• To investigate the role of IL-16 in endometriosis-related inflammation.
• To identify key molecular triggers of IL-16 activation in endometriosis.
• To develop a potential therapeutic intervention for endometriosis.

Main Methods:

• Established endometriosis mouse models (wild-type and IL16KO).
• Utilized an in vitro system to study cellular mechanisms.
• Investigated iron overload-induced pyroptosis and IL-16 activation.
• Developed and tested a GSDME-NTD inhibitor (Z30702029).

Main Results:

• IL-16 acts as a driver of endometriosis-related inflammation.
• Iron overload induces GSDME-mediated pyroptosis, activating IL-16 release.
• The compound Z30702029 effectively inhibits GSDME-NTD-mediated pyroptosis.
• GSDME-mediated pyroptosis is a broader pathway for IL-16 release.

Conclusions:

• IL-16 plays a crucial role in endometriosis pathogenesis.
• GSDME-mediated pyroptosis is a key upstream event for IL-16 activation.
• Z30702029 demonstrates therapeutic promise for endometriosis.
• The findings have implications for treating other IL-16-related inflammatory conditions.