Browsing by Author "Materna, M."

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Open Access
Inborn errors of OAS–RNase L in SARS-CoV-2–related multisystem inflammatory syndrome in children
(American Association for the Advancement of Science (AAAS), 2022-12-20) Lee, D.; Pen, J. L.; Yatim, A.; Dong, B.; Aquino, Y.; Ogishi, M.; Pescarmona, R.; Talouarn, E.; Rinchai, D.; Zhang, P.; Perret, M.; Liu, Z.; Jordan, L.; Bozdemir, S. E.; Bayhan, G. I.; Beaufils, C.; Bizien, L.; Bisiaux, A.; Lei, W.; Hasan, M.; Chen, J.; Gaughan, C.; Asthana, A.; Libri, V.; Luna, Joseph M.; Jaffré, Fabrice; Hoffmann, H.; Michailidis, E.; Moreews, M.; Seeleuthner, Y.; Bilguvar, K.; Mane, S.; Flores, C.; Zhang, Y.; Arias, A. A.; Bailey, R.; Schlüter, A.; Milisavljevic, B.; Bigio, B.; Voyer, T. L.; Materna, M.; Gervais, A.; Moncada-Velez, M.; Pala, F.; Lazarov, T.; Levy, R.; Neehus, A.; Rosain, J.; Peel, J.; Chan, Y.; Morin, M.; Pino-Ramirez, R. M.; Belkaya, Serkan; Lorenzo, L.; Anton, J.; Delafontaine, S.; Toubiana, J.; Bajolle, F.; Fumadó, V.; DeDiego, M. L.; Fidouh, N.; Rozenberg, F.; Pérez-Tur, J.; Chen, S.; Evans, T.; Geissmann, F.; Lebon, P.; Weiss, S. R.; Bonnet, D.; Duval, X.; Cohort§, C.; Effort, C.; Pan-Hammarström, Q.; Planas, A. M.; Meyts, I.; Haerynck, F.; Pujol, A.; Sancho-Shimizu, V.; Dalgard, C.; Bustamante, J.; Puel, A.; Boisson-Dupuis, S.; Boisson, B.; Maniatis, T.; Zhang, Q.; Bastard, P.; Notarangelo, L.; Béziat, V.; Diego, R.; Rodriguez-Gallego, C.; Su, H. C.; Lifton, R. P.; Jouanguy, E.; Cobat, A.; Alsina, L.; Keles, S.; Haddad, E.; Abel, L.; Belot, A.; Quintana-Murci, L.; Rice, C. M.; Silverman, R. H.; Zhang, S.; Casanova, J.
Multisystem inflammatory syndrome in children (MIS-C) is a rare and severe condition that follows benign COVID-19. We report autosomal recessive deficiencies of OAS1, OAS2, or RNASEL in five unrelated children with MIS-C. The cytosolic double-stranded RNA (dsRNA)-sensing OAS1 and OAS2 generate 2'-5'-linked oligoadenylates (2-5A) that activate the single-stranded RNA-degrading ribonuclease L (RNase L). Monocytic cell lines and primary myeloid cells with OAS1, OAS2, or RNase L deficiencies produce excessive amounts of inflammatory cytokines upon dsRNA or severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) stimulation. Exogenous 2-5A suppresses cytokine production in OAS1-deficient but not RNase L-deficient cells. Cytokine production in RNase L-deficient cells is impaired by MDA5 or RIG-I deficiency and abolished by mitochondrial antiviral-signaling protein (MAVS) deficiency. Recessive OAS-RNase L deficiencies in these patients unleash the production of SARS-CoV-2-triggered, MAVS-mediated inflammatory cytokines by mononuclear phagocytes, thereby underlying MIS-C.
Open Access
X-linked recessive TLR7 deficiency in ~1% of men under 60 years old with life-threatening COVID-19
(American Association for the Advancement of Science (AAAS), 2021-08-20) Asano, T.; Boisson, B.; Onodi, F.; Matuozzo, D.; Moncada-Velez, M.; Renkilaraj, M. R. L. M.; Zhang, P.; Meertens, L.; Bolze, A.; Materna, M.; Korniotis, S.; Gervais, A.; Talouarn, E.; Bigio, B.; Seeleuthner, Y.; Bilguvar, K.; Zhang, Y.; Neehus, AL.; Ogishi, M.; Pelham, SJ.; Le Voyer, T.; Rosain, J.; Philippot, Q.; Soler-Palacin, P.; Colobran, R.; Martin-Nalda, A.; Riviere, J. G.; Tandjaoui-Lambiotte, Y.; Chaibi, K.; Shahrooei, M.; Darazam, I. A.; Olyaei, NA.; Mansouri, D.; Palabiyik, F.; Özçelik, Tayfun; Novelli, G.; Novelli, A.; Casari, G.; Aiuti, A.; Carrera, P.; Bondesan, S.; Barzaghi, F.; Rovere-Querini, P.; Tresoldi, C.; Franco, J. L.; Rojas, J.; Reyes, LF.; Bustos, IG.; Arias, AA.; Morelle, G.; Kyheng, C.; Troya, J.; Planas-Serra, L.; Schluter, A.; Gut, M.; Pujol, A.; Allende, L. M.; Rodriguez-Gallego, C.; Flores, C.; Cabrera-Marante, O.; Pleguezuelo, DE.; de Diego, R. P.; Keles, S.; Aytekin, G.; Akcan, O. M.; Bryceson, Y. T.; Bergman, P.; Brodin, P.; Smole, D.; Smith, C. I. E.; Norlin, A. C.; Campbell, T. M.; Covill, LE.; Hammarstrom, L.; Pan-Hammarstrom, Q.; Abolhassani, H.; Mane, S.; Marr, N.; Ata, M.; Al Ali, F.; Khan, T.; Spaan, A. N.; Dalgard, C. L.; Bonfanti, P.; Biondi, A.; Tubiana, S.; Burdet, C.; Nussbaum, R.; Kahn-Kirby, A.; Snow, AL.; Bustamante, J.; Puel, A.; Boisson-Dupuis, S.; Zhang, S. Y.; Beziat, V.; Lifton, R. P.; Bastard, P.; Notarangelo, L. D.; Abel, L.; Su, H. C.; Jouanguy, E.; Amara, A.; Soumelis, V.; Cobat, A.; Zhang, Q.; Casanova, J. L.
Autosomal inborn errors of type I IFN immunity and autoantibodies against these cytokines underlie at least 10% of critical COVID-19 pneumonia cases. We report very rare, biochemically deleterious X-linked TLR7 variants in 16 unrelated male individuals aged 7 to 71 years (mean, 36.7 years) from a cohort of 1202 male patients aged 0.5 to 99 years (mean, 52.9 years) with unexplained critical COVID-19 pneumonia. None of the 331 asymptomatically or mildly infected male individuals aged 1.3 to 102 years (mean, 38.7 years) tested carry such TLR7 variants (P = 3.5 × 10−5). The phenotypes of five hemizygous relatives of index cases infected with SARS-CoV-2 include asymptomatic or mild infection (n = 2) or moderate (n = 1), severe (n = 1), or critical (n = 1) pneumonia. Two patients from a cohort of 262 male patients with severe COVID-19 pneumonia (mean, 51.0 years) are hemizygous for a deleterious TLR7 variant. The cumulative allele frequency for deleterious TLR7 variants in the male general population is <6.5 × 10−4. We show that blood B cell lines and myeloid cell subsets from the patients do not respond to TLR7 stimulation, a phenotype rescued by wild-type TLR7. The patients’ blood plasmacytoid dendritic cells (pDCs) produce low levels of type I IFNs in response to SARS-CoV-2. Overall, X-linked recessive TLR7 deficiency is a highly penetrant genetic etiology of critical COVID-19 pneumonia, in about 1.8% of male patients below the age of 60 years. Human TLR7 and pDCs are essential for protective type I IFN immunity against SARS-CoV-2 in the respiratory tract.