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A Non-targeted Proteomics Newborn Screening Platform for Inborn Errors of Immunity

Abstract

Purpose: Newborn screening using dried blood spot (DBS) samples for the targeted measurement of metabolites and nucleic acids has made a substantial contribution to public healthcare by facilitating the detection of neonates with genetic disorders. Here, we investigated the applicability of non-targeted quantitative proteomics analysis to newborn screening for inborn errors of immunity (IEIs).

Methods: DBS samples from 40 healthy newborns and eight healthy adults were subjected to non-targeted proteomics analysis using liquid chromatography-mass spectrometry after removal of the hydrophilic fraction. Subsequently, DBS samples from 43 IEI patients were analyzed to determine whether patients can be identified by reduced expression of disease-associated proteins.

Results: DBS protein profiling allowed monitoring of levels of proteins encoded by 2912 genes, including 1110 listed in the Online Mendelian Inheritance in Man database, in healthy newborn samples, and was useful in identifying patients with IEIs by detecting reduced levels of disease causative proteins and their interacting proteins, as well as cell-phenotypical alterations.

Conclusion: Our results indicate that non-targeted quantitative protein profiling of DBS samples can be used to identify patients with IEIs and develop a novel newborn screening platform for genetic disorders.

References
1.
Searle B, Swearingen K, Barnes C, Schmidt T, Gessulat S, Kuster B . Generating high quality libraries for DIA MS with empirically corrected peptide predictions. Nat Commun. 2020; 11(1):1548. PMC: 7096433. DOI: 10.1038/s41467-020-15346-1. View

2.
Burroughs L, Petrovic A, Brazauskas R, Liu X, Griffith L, Ochs H . Excellent outcomes following hematopoietic cell transplantation for Wiskott-Aldrich syndrome: a PIDTC report. Blood. 2020; 135(23):2094-2105. PMC: 7273831. DOI: 10.1182/blood.2019002939. View

3.
Borte S, von Dobeln U, Fasth A, Wang N, Janzi M, Winiarski J . Neonatal screening for severe primary immunodeficiency diseases using high-throughput triplex real-time PCR. Blood. 2011; 119(11):2552-5. DOI: 10.1182/blood-2011-08-371021. View

4.
Zur Stadt U, Rohr J, Seifert W, Koch F, Grieve S, Pagel J . Familial hemophagocytic lymphohistiocytosis type 5 (FHL-5) is caused by mutations in Munc18-2 and impaired binding to syntaxin 11. Am J Hum Genet. 2009; 85(4):482-92. PMC: 2756548. DOI: 10.1016/j.ajhg.2009.09.005. View

5.
Kawashima Y, Watanabe E, Umeyama T, Nakajima D, Hattori M, Honda K . Optimization of Data-Independent Acquisition Mass Spectrometry for Deep and Highly Sensitive Proteomic Analysis. Int J Mol Sci. 2019; 20(23). PMC: 6928715. DOI: 10.3390/ijms20235932. View