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Effects of GBT1118, a voxelotor analog, on bone disease in sickle cell disease mice
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Effects of GBT1118, a voxelotor analog, on bone disease in sickle cell disease mice
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Journal Article
Effects of GBT1118, a voxelotor analog, on bone disease in sickle cell disease mice
2024
Overview
We assessed the effect of GBT1118, a sickle hemoglobin polymerization inhibitor on bone loss in humanized sickle cell disease (SCD) mice. Healthy control (Ctrl) 4-months-old female and male mice were fed Vehicle-chow for 2-months, while SCD mice were fed Vehicle-chow or GBT1118-chow. By micro-CT, GBT1118 significantly increased femur metaphyseal trabecular thickness (Tb.Th) and tissue mineral density (TMD), and significantly decreased trabecular spacing in female SCD mice. In SCD male mice, there was significant reduction in epiphyseal trabecular bone volume fraction (BV/TV), Tb.Th and TMD and GBT1118 significantly increased BV/TV and TMD but not Tb.Th. A significant decrease in cortical area fraction in SCD female mice was rescued by GBT1118 but not SCD males. Markedly decreased mineralized femur trabeculae in SCD females and males was partially rescued by GBT1118. Bone histomorphometry of femurs demonstrated significantly decreased bone formation parameters and increased bone resorption parameters in SCD mice of both sex that were rescued by GBT1118. Significant alteration in bone and hypoxia related genes of SCD mice of both sexes were differentially modulated by GBT1118. We conclude that \"a sickle hemoglobin polymerization inhibitor\" might be efficacious in improving some parameters of SCD bone loss.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ 692/699
/ Anemia, Sickle Cell - complications
/ Anemia, Sickle Cell - drug therapy
/ Anemia, Sickle Cell - pathology
/ Animals
/ Bone Diseases - diagnostic imaging
/ Bone Diseases - drug therapy
/ Cancellous Bone - diagnostic imaging
/ Cancellous Bone - drug effects
/ Female
/ Females
/ Femur
/ Hemoglobin allosteric modifier
/ Hemoglobin, Sickle - metabolism
/ Humanities and Social Sciences
/ Humans
/ Hypoxia
/ Male
/ Males
/ Mice
/ Science
