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The transsulfuration (TSS) pathway is an alternative source of cysteine for glutathione synthesis. Little of the TSS pathway in antioxidant capacity in sickle cell disease (SCD) is known. Here, we evaluate the effects of TSS pathway activation through cystathionine beta-synthase (CBS) to attenuate reactive oxygen species (ROS) and ferroptosis stresses in SCD.

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Background: Erythroid cells contribute to embryonic organ development and adult tissue repair supplying oxygen to tissues. During mouse development, the primitive erythroid cells produced in the extraembryonic blood islands of the yolk sac begin to circulate as immature and nucleated erythroblasts with the onset of cardiac contractions around embryonic day 9.5 (E9.

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The Impact of Sodium Selenite and Seleno-L-Methionine on Stress Erythropoiesis in a Murine Model of Hemolytic Anemia.

J Nutr

December 2024

Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, Pennsylvania, United States. Electronic address:

Background: Selenium (Se) is an essential trace element that exerts most biological activities through selenoproteins. Dietary selenium is a key regulator of red cell homeostasis and stress erythropoiesis. However, it is unknown whether the form and increasing doses of Se supplementation in the diet impact stress erythropoiesis under anemic conditions.

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GLTSCR1, a protein encoded by the Bicra gene, is a defining subunit of the SWI/SNF (also called mammalian BAF) chromatin remodeling subcomplex called GBAF/ncBAF. To determine the role of GLTSCR1 during mouse development, we generated a Bicra germline knockout mouse using CRISPR/Cas9. Mice with homozygous loss of Bicra were born at Mendelian ratios but were small, pale and died within 24 hours after birth.

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[Research progress on erythroblastic islands in erythroid development and related diseases].

Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi

October 2024

Department of Medical Genetics and Developmental Biology, Basic Medical Science Academy, Air Force Medical University, Xi'an 710032, China. *Corresponding author, E-mail:

Erythroblastic islands (EBIs) are specialized structures that are formed by a central macrophage surrounded by maturating erythroblasts. The central macrophage mediates EBI formation and plays a crucial role in the proliferation, differentiation, enucleation, and maturation of erythroblasts. In stress erythropoiesis, the expression levels of several adhesion molecules mediating EBI formation become abnormal, leading to various erythroid diseases.

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