TY - JOUR
T1 - Loss of the Fanconi anemia-associated protein NIPA causes bone marrow failure
AU - Kreutmair, Stefanie
AU - Erlacher, Miriam
AU - Andrieux, Geoffroy
AU - Istvanffy, Rouzanna
AU - Mueller-Rudorf, Alina
AU - Zwick, Melissa
AU - Rückert, Tamina
AU - Pantic, Milena
AU - Poggio, Teresa
AU - Shoumariyeh, Khalid
AU - Mueller, Tony A
AU - Kawaguchi, Hiroyuki
AU - Follo, Marie
AU - Klingeberg, Cathrin
AU - Wlodarski, Marcin
AU - Baumann, Irith
AU - Pfeifer, Dietmar
AU - Kulinski, Michal
AU - Rudelius, Martina
AU - Lemeer, Simone
AU - Kuster, Bernhard
AU - Dierks, Christine
AU - Peschel, Christian
AU - Cabezas-Wallscheid, Nina
AU - Duque-Afonso, Jesus
AU - Zeiser, Robert
AU - Cleary, Michael L
AU - Schindler, Detlev
AU - Schmitt-Graeff, Annette
AU - Boerries, Melanie
AU - Niemeyer, Charlotte M
AU - Oostendorp, Robert Aj
AU - Duyster, Justus
AU - Illert, Anna Lena
PY - 2020/6/1
Y1 - 2020/6/1
N2 - Inherited bone marrow failure syndromes (IBMFSs) are a heterogeneous group of disorders characterized by defective hematopoiesis, impaired stem cell function, and cancer susceptibility. Diagnosis of IBMFS presents a major challenge due to the large variety of associated phenotypes, and novel, clinically relevant biomarkers are urgently needed. Our study identified nuclear interaction partner of ALK (NIPA) as an IBMFS gene, as it is significantly downregulated in a distinct subset of myelodysplastic syndrome-type (MDS-type) refractory cytopenia in children. Mechanistically, we showed that NIPA is major player in the Fanconi anemia (FA) pathway, which binds FANCD2 and regulates its nuclear abundance, making it essential for a functional DNA repair/FA/BRCA pathway. In a knockout mouse model, Nipa deficiency led to major cell-intrinsic defects, including a premature aging phenotype, with accumulation of DNA damage in hematopoietic stem cells (HSCs). Induction of replication stress triggered a reduction in and functional decline of murine HSCs, resulting in complete bone marrow failure and death of the knockout mice with 100% penetrance. Taken together, the results of our study add NIPA to the short list of FA-associated proteins, thereby highlighting its potential as a diagnostic marker and/or possible target in diseases characterized by hematopoietic failure.
AB - Inherited bone marrow failure syndromes (IBMFSs) are a heterogeneous group of disorders characterized by defective hematopoiesis, impaired stem cell function, and cancer susceptibility. Diagnosis of IBMFS presents a major challenge due to the large variety of associated phenotypes, and novel, clinically relevant biomarkers are urgently needed. Our study identified nuclear interaction partner of ALK (NIPA) as an IBMFS gene, as it is significantly downregulated in a distinct subset of myelodysplastic syndrome-type (MDS-type) refractory cytopenia in children. Mechanistically, we showed that NIPA is major player in the Fanconi anemia (FA) pathway, which binds FANCD2 and regulates its nuclear abundance, making it essential for a functional DNA repair/FA/BRCA pathway. In a knockout mouse model, Nipa deficiency led to major cell-intrinsic defects, including a premature aging phenotype, with accumulation of DNA damage in hematopoietic stem cells (HSCs). Induction of replication stress triggered a reduction in and functional decline of murine HSCs, resulting in complete bone marrow failure and death of the knockout mice with 100% penetrance. Taken together, the results of our study add NIPA to the short list of FA-associated proteins, thereby highlighting its potential as a diagnostic marker and/or possible target in diseases characterized by hematopoietic failure.
KW - Animals
KW - Congenital Bone Marrow Failure Syndromes/genetics
KW - Fanconi Anemia Complementation Group D2 Protein/genetics
KW - Hematopoietic Stem Cells/metabolism
KW - Mice
KW - Mice, Knockout
KW - Nuclear Proteins/deficiency
KW - Protein Binding
U2 - 10.1172/JCI126215
DO - 10.1172/JCI126215
M3 - Article
C2 - 32338640
SN - 0021-9738
VL - 130
SP - 2827
EP - 2844
JO - Journal of Clinical Investigation
JF - Journal of Clinical Investigation
IS - 6
ER -