A recurring mutation in the respiratory complex 1 protein NDUFB11 is responsible for a novel form of X-linked sideroblastic anemia

Daniel A. Lichtenstein, Andrew W. Crispin, Anoop K. Sendamarai, Dean R. Campagna, Klaus Schmitz-Abe, Cristovao M. Sousa, Martin D. Kafina, Paul J. Schmidt, Charlotte M. Niemeyer, John Porter, Alison May, Mrinal M. Patnaik, Matthew M. Heeney, Alec Kimmelman, Sylvia S. Bottomley, Barry H. Paw, Kyriacos Markianos, Mark D. Fleming

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

The congenital sideroblastic anemias (CSAs) are a heterogeneous group of inherited blood disorders characterized by pathological mitochondrial iron deposition in erythroid precursors. Each known cause has been attributed to a mutation in a protein associated with heme biosynthesis, iron-sulfur cluster biogenesis, mitochondrial translation, or a component of the mitochondrial respiratory chain. Here, we describe a recurring mutation, c.276_278del, p.F93del, in NDUFB11, a mitochondrial respiratory complex I-associated protein encoded on the X chromosome, in 5 males with a variably syndromic, normocytic CSA. The p.F93del mutation results in respiratory insufficiency and loss of complex I stability and activity in patient-derived fibroblasts. Targeted introduction of this allele into K562 erythroleukemia cells results in a proliferation defect with minimal effect on erythroid differentiation potential, suggesting the mechanism of anemia in this disorder.

Original languageEnglish (US)
Pages (from-to)913-917
Number of pages5
JournalBlood
Volume128
Issue number15
DOIs
StatePublished - Oct 13 2016

ASJC Scopus subject areas

  • Biochemistry
  • Immunology
  • Hematology
  • Cell Biology

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