Excessive Serine from the Bone Marrow Microenvironment Impairs Megakaryopoiesis and Thrombopoiesis in Multiple Myeloma
Overview
Authors
Affiliations
Thrombocytopenia is a major complication in a subset of patients with multiple myeloma (MM). However, little is known about its development and significance during MM. Here, we show thrombocytopenia is linked to poor prognosis in MM. In addition, we identify serine, which is released from MM cells into the bone marrow microenvironment, as a key metabolic factor that suppresses megakaryopoiesis and thrombopoiesis. The impact of excessive serine on thrombocytopenia is mainly mediated through the suppression of megakaryocyte (MK) differentiation. Extrinsic serine is transported into MKs through SLC38A1 and downregulates SVIL via SAM-mediated tri-methylation of H3K9, ultimately leading to the impairment of megakaryopoiesis. Inhibition of serine utilization or treatment with TPO enhances megakaryopoiesis and thrombopoiesis and suppresses MM progression. Together, we identify serine as a key metabolic regulator of thrombocytopenia, unveil molecular mechanisms governing MM progression, and provide potential therapeutic strategies for treating MM patients by targeting thrombocytopenia.
Deng Z, Sun S, Zhou N, Peng Y, Cheng L, Yu X Adv Sci (Weinh). 2024; 12(5):e2407681.
PMID: 39656865 PMC: 11792023. DOI: 10.1002/advs.202407681.
Versatility of megakaryocytes in homeostasis and disease.
Wang D, Xie J, Zhao M Blood Sci. 2024; 6(4):e00212.
PMID: 39620204 PMC: 11608743. DOI: 10.1097/BS9.0000000000000212.
Enhanced platelet function through CAR-T cell therapy in relapsed/refractory multiple myeloma.
Ma R, Zhang Q, Liu Y, Li H, Chen H, Zhang Q Clin Exp Med. 2024; 24(1):210.
PMID: 39230837 PMC: 11374909. DOI: 10.1007/s10238-024-01477-y.
Rediscovering hemostasis abnormalities in multiple myeloma: The new era.
Huang Y, Wang C, Wang H, Liu H, Zhou L Heliyon. 2024; 10(13):e34111.
PMID: 39055831 PMC: 11269926. DOI: 10.1016/j.heliyon.2024.e34111.
Epigenetic regulation of megakaryopoiesis and platelet formation.
Xu B, Ye X, Wen Z, Chen S, Wang J Haematologica. 2024; 109(10):3125-3137.
PMID: 38867584 PMC: 11443398. DOI: 10.3324/haematol.2023.284951.