دورية أكاديمية
Glycine inhibits NINJ1 membrane clustering to suppress plasma membrane rupture in cell death.
العنوان: | Glycine inhibits NINJ1 membrane clustering to suppress plasma membrane rupture in cell death. |
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المؤلفون: | Borges, Jazlyn P.1, Sætra, Ragnhild S. R.2, Volchuk, Allen3, Bugge, Marit2, Devant, Pascal4, Sporsheim, Bjørnar2, Kilburn, Bridget R.1, Evavold, Charles L.5, Kagan, Jonathan C.4, Goldenberg, Neil M.3,6,7, Flo, Trude Helen2,4, Steinberg, Benjamin Ethan1,6,7 benjamin.steinberg@sickkids.ca |
المصدر: | eLife. 12/15/2022, p1-24. 24p. |
مصطلحات موضوعية: | *CELL membranes, *GLYCINE, *CELL preservation, *DRUG target, *CYTOPROTECTION, *CELL death |
مستخلص: | First recognized more than 30 years ago, glycine protects cells against rupture from diverse types of injury. This robust and widely observed effect has been speculated to target a late downstream process common to multiple modes of tissue injury. The molecular target of glycine that mediates cytoprotection, however, remains elusive. Here, we show that glycine works at the level of NINJ1, a newly identified executioner of plasma membrane rupture in pyroptosis, necrosis, and post-apoptosis lysis. NINJ1 is thought to cluster within the plasma membrane to cause cell rupture. We demonstrate that the execution of pyroptotic cell rupture is similar for human and mouse NINJ1 and that NINJ1 knockout functionally and morphologically phenocopies glycine cytoprotection in macrophages undergoing lytic cell death. Next, we show that glycine prevents NINJ1 clustering by either direct or indirect mechanisms. In pyroptosis, glycine preserves cellular integrity but does not affect upstream inflammasome activities or accompanying energetic cell death. By positioning NINJ1 clustering as a glycine target, our data resolve a long-standing mechanism for glycinemediated cytoprotection. This new understanding will inform the development of cell preservation strategies to counter pathologic lytic cell death. [ABSTRACT FROM AUTHOR] |
قاعدة البيانات: | Academic Search Index |
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