Delta-Globin Gene Expression Is Enhanced in vivo by Interferon Type I

Frontiers in Medicine
Maria Francesca ManchinuM S Ristaldi

Abstract

Beta hemoglobinopathies are widely spread monogenic lethal diseases. Delta-globin gene activation has been proposed as a possible approach for curing these pathologies. The therapeutic potential of delta-globin, the non-alpha component of Hemoglobin A2 (α2δ2; HbA2), has been demonstrated in a mouse model of beta thalassemia, while its anti-sickling effect, comparable to that of gamma globin, was established some time ago. Here we show that the delta-globin mRNA level is considerably increased in a Deoxyribonuclease II-alpha knockout mouse model in which type 1 interferon (interferon beta, IFNb) is activated. IFNb activation in the fetal liver improves the delta-globin mRNA level, while the beta-globin mRNA level is significantly reduced. In addition, we show that HbA2 is significantly increased in patients with multiple sclerosis under type 1 interferon treatment. Our results represent a proof of principle that delta-globin expression can be enhanced through the use of molecules. This observation is potentially interesting in view of a pharmacological approach able to increase the HbA2 level.

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Citations

May 29, 2021·British Journal of Haematology·Susanna PorcuMaria S Ristaldi

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Methods Mentioned

BETA
transgenic
PCR
FACS
electrophoresis
flow cytometry

Software Mentioned

Power
FACSDiva
R
FlowJo

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