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Extramedullary Hematopoiesis in Cancer

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Journal Exp Mol Med
Date 2024 Mar 5
PMID 38443597
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Abstract

Hematopoiesis can occur outside of the bone marrow during inflammatory stress to increase the production of primarily myeloid cells at extramedullary sites; this process is known as extramedullary hematopoiesis (EMH). As observed in a broad range of hematologic and nonhematologic diseases, EMH is now recognized for its important contributions to solid tumor pathology and prognosis. To initiate EMH, hematopoietic stem cells (HSCs) are mobilized from the bone marrow into the circulation and to extramedullary sites such as the spleen and liver. At these sites, HSCs primarily produce a pathological subset of myeloid cells that contributes to tumor pathology. The EMH HSC niche, which is distinct from the bone marrow HSC niche, is beginning to be characterized. The important cytokines that likely contribute to initiating and maintaining the EMH niche are KIT ligands, CXCL12, G-CSF, IL-1 family members, LIF, TNFα, and CXCR2. Further study of the role of EMH may offer valuable insights into emergency hematopoiesis and therapeutic approaches against cancer. Exciting future directions for the study of EMH include identifying common and distinct EMH mechanisms in cancer, infectious diseases, and chronic autoimmune diseases to control these conditions.

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References
1.
Paling N, Wheadon H, Bone H, Welham M . Regulation of embryonic stem cell self-renewal by phosphoinositide 3-kinase-dependent signaling. J Biol Chem. 2004; 279(46):48063-70. DOI: 10.1074/jbc.M406467200. View

2.
Corre J, Planat-Benard V, Corberand J, Penicaud L, Casteilla L, Laharrague P . Human bone marrow adipocytes support complete myeloid and lymphoid differentiation from human CD34 cells. Br J Haematol. 2004; 127(3):344-7. DOI: 10.1111/j.1365-2141.2004.05198.x. View

3.
Karpova D, Rettig M, Ritchey J, Cancilla D, Christ S, Gehrs L . Targeting VLA4 integrin and CXCR2 mobilizes serially repopulating hematopoietic stem cells. J Clin Invest. 2019; 129(7):2745-2759. PMC: 6597242. DOI: 10.1172/JCI124738. View

4.
Templeton A, McNamara M, Seruga B, Vera-Badillo F, Aneja P, Ocana A . Prognostic role of neutrophil-to-lymphocyte ratio in solid tumors: a systematic review and meta-analysis. J Natl Cancer Inst. 2014; 106(6):dju124. DOI: 10.1093/jnci/dju124. View

5.
Wu H, Klingmuller U, Acurio A, Hsiao J, Lodish H . Functional interaction of erythropoietin and stem cell factor receptors is essential for erythroid colony formation. Proc Natl Acad Sci U S A. 1997; 94(5):1806-10. PMC: 19998. DOI: 10.1073/pnas.94.5.1806. View