JSON
Chan Y, Lundberg V, Le Pen J, Yuan J, Lee D, Pinci F, Volpi S, Nakajima K, Bondet V, Åkesson S, Khobrekar NV, Bodansky A, Du L, Melander T, Mariaggi A, Seeleuthner Y, Saleh TS, Chakravarty D, Marits P, Dobbs K, Vonlanthen S, Hennings V, Thörn K, Rinchai D, Bizien L, Chaldebas M, Sobh A, Özçelik T, Keles S, AlKhater SA, Prando C, Meyts I, COVID Human Genetic Effort , Wilson MR, Rosain J, Jouanguy E, Aubart M, Abel L, Mogensen TH, Pan-Hammarström Q, Gao D, Duffy D, Cobat A, Berg S, Notarangelo LD, Harschnitz O, Rice CM, Studer L, Casanova J, Ekwall O, Zhang S
J Exp Med 221 (9) -
[2024-09-02; online 2024-07-18]
Inherited deficiency of the RNA lariat-debranching enzyme 1 (DBR1) is a rare etiology of brainstem viral encephalitis. The cellular basis of disease and the range of viral predisposition are unclear. We report inherited DBR1 deficiency in a 14-year-old boy who suffered from isolated SARS-CoV-2 brainstem encephalitis. The patient is homozygous for a previously reported hypomorphic and pathogenic DBR1 variant (I120T). Consistently, DBR1 I120T/I120T fibroblasts from affected individuals from this and another unrelated kindred have similarly low levels of DBR1 protein and high levels of RNA lariats. DBR1 I120T/I120T human pluripotent stem cell (hPSC)-derived hindbrain neurons are highly susceptible to SARS-CoV-2 infection. Exogenous WT DBR1 expression in DBR1 I120T/I120T fibroblasts and hindbrain neurons rescued the RNA lariat accumulation phenotype. Moreover, expression of exogenous RNA lariats, mimicking DBR1 deficiency, increased the susceptibility of WT hindbrain neurons to SARS-CoV-2 infection. Inborn errors of DBR1 impair hindbrain neuron-intrinsic antiviral immunity, predisposing to viral infections of the brainstem, including that by SARS-CoV-2.
Category: Genomics & transcriptomics
PubMed 39023559
DOI 10.1084/jem.20231725
Crossref 10.1084/jem.20231725
pmc: PMC11256911
pii: 276864