Ubiquitination Defect of XIAP as Novel Susceptibility to Invasive Fungal Pneumonia.

Tan, Rachel Ying Min; Chen, Zhi Xiong; Sivaraman, J; Kong, Kiat Whye; Tan, Zhaohong; Xu, Shengli; Zhu, Jin; Tambyah, Paul Anantharajah et al. · J Infect Dis · 2026

basic_science · Level V

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Abstract

Programmed cell death and systematic protein degradation as exemplified by apoptosis and ubiquitination respectively, are essential biological processes for homeostasis and cellular regeneration. We show that dysregulated ubiquitination and aggravated apoptosis resulting from hypomorphic X-linked Inhibitor of Apoptosis Protein gene mutation suppressed innate immunity, predisposing to human invasive fungal pneumonia.