Deep deconvolution of the hematopoietic stem cell regulatory microenvironment reveals a high degree of specialization and conservation between mouse and human.
Ye, J.; Calvo, I. A.; Cenzano, I.; Vilas-Zornoza, A.; Martinez-de-Morentin, X.; Lasaga, M.; Alignani, D.; Pavia, B.; Vinado, A. C.; San Martin-Uriz, P.; Romero, J. P.; Quilez Agreda, D.; MinanaBarrios, M.; Sancho-Gonzalez, I.; Todisco, G.; Malcovati, L.; Planell, N.; Saez, B.; Tegner, J.; Prosper, F.; Gomez-Cabrero, D.
Show abstract
Understanding the regulation of normal and malignant human hematopoiesis requires comprehensive cell atlas of the hematopoietic stem cell (HSC) regulatory microenvironment. Here, we develop a tailored bioinformatic pipeline to integrate public and proprietary single-cell RNA sequencing (scRNA-seq) datasets. As a result, we robustly identify for the first time 14 intermediate cell states and 11 stages of differentiation in the endothelial and mesenchymal BM compartments, respectively. Our data provide the most comprehensive description to date of the murine HSC-regulatory microenvironment and suggests a higher level of specialization of the cellular circuits than previously anticipated. Furthermore, this deep characterization allows to infer conserved features in human, suggesting that the layers of microenvironmental regulation of hematopoiesis may also be shared between species. Our resource and methodology are a steppingstone towards a comprehensive cell atlas of the BM microenvironment.
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