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Megaloblastic Anemia

Megaloblastic anemia is a type of anemia distinguished by the existence of abnormally large and malformed red blood cells known as megaloblasts. To meet the challenges of therapy, Protheragen allocated its resources into advanced technologies and specialists working toward resolving the problem of megaloblastic anemia. With our complete support services, we can optimize your procedures from the development of the drug candidate to the commercialization of the drug.

Overview of Megaloblastic Anemia

Megaloblastic anemia is a type of macrocytic anemia marked by impaired DNA synthesis in the hematopoietic precursors, leading to ineffective erythropoiesis and the formation of megaloblasts-abnormally large erythroid cells with immature nuclei. This condition mostly results from a deficiency of vitamin B12 or folate, although some rare forms exist due to genetic factors or drugs.

Megaloblastic changes in erythrocytic and megakaryocytic lineages.Fig.1 Cold agglutinin disease (CAD) is an acquired autoimmune hemolytic anemia (AIHA). (Climent F, et al., 2022)

Pathogenesis of Megaloblastic Anemia

Megaloblastic anemia stems from the impaired synthesis of DNA resulting from a deficiency of either vitamin B 12 or folate, which interferes with the generation of thymidylate and leads to uracil being incorrectly inserted into the DNA, which triggers the apoptosis of erythroblasts along with asynchrony of the nucleus and cytoplasm in the developing erythrocytes. This leads to ineffective forming of red blood cells alongside the megaloblastic marrow morphology and peripheral blood findings of macrocytic anemia and hypersegmented neutrophils.

Aplastic anemias and megaloblastic anemia.Fig.1 Cold agglutinin disease (CAD) is an acquired autoimmune hemolytic anemia (AIHA). (Climent F, et al., 2022)

Therapy Development for Megaloblastic Anemia

The present management of megaloblastic anemia is predicated on B12 (injectable or high-dose oral) and folate supplementation, which reliably rectifies the hematologic abnormalities but does not restore neurological damage due to advanced B12 deficiency. This further emphasizes important unaddressed needs.

Therapy Targets Mechanism of Action Phase
Vitamin B12 Methionine synthase, Methylmalonyl-CoA mutase Serves as a cofactor for methionine synthase and methylmalonyl-CoA mutase. Approved
Folate Dihydrofolate reductase, Thymidylate synthase Provides tetrahydrofolate (THF) for thymidylate synthase-mediated DNA synthesis, preventing uracil misincorporation. Approved

Disclaimer: Protheragen focuses on providing preclinical research services. This table is for information exchange purposes only. This table is not a treatment plan recommendation. For guidance on treatment options, please visit a regular hospital.

Our Services

Recognizing the challenges of diagnosing and treating megaloblastic anemia, Protheragen is committed to building a team of experts to provide cutting-edge diagnostic and therapeutic development solutions. Our commitment lies in providing a variety of customized therapy development services to meet the diverse research needs of our customers. We also excel in generating precise disease models that are carefully engineered to replicate the unique features of megaloblastic anemia. These models are valuable tools for validating the safety and efficacy of potential therapeutics.

Animal Model Development Services

  • EBI-HIS Model: The model successfully reproduced the key features of megaloblastic erythropoiesis, circulating nucleated erythrocytes, and multi-organ thrombosis by transplanting patient-derived human hematopoietic stem cells (HSCs) into neonatal immunodeficient mice.

At Protheragen, we are dedicated to supporting the development of innovative therapies through comprehensive preclinical research services . Our expertise spans pharmacodynamics (PD), pharmacokinetic (PK) and toxicology studies, ensuring a thorough evaluation of your therapeutic candidates. If you are interested in our services, please feel free to contact us for more details and quotation information of related services.

References

  • Al Qahtani S A. Drug-induced megaloblastic, aplastic, and hemolytic anemias: current concepts of pathophysiology and treatment[J]. Int J Clin Exp Med, 2018, 11(6): 5501-5512.
  • Zhan S, Cheng F, He H, et al. Identification of transcobalamin deficiency with two novel mutations in the TCN2 gene in a Chinese girl with abnormal immunity: a case report[J]. BMC pediatrics, 2020, 20: 1-7.