Abstract
Stroma is a poorly defined non-parenchymal component of virtually every organ with key roles in organ development, homeostasis, and repair. Studies of the bone marrow stroma have defined individual populations in the stem cell niche regulating hematopoietic regeneration and capable of initiating leukemia. Here, we use single-cell RNA sequencing (scRNA-seq) to define a cellular taxonomy of the mouse bone marrow stroma and its perturbation by malignancy. We identified seventeen stromal subsets expressing distinct hematopoietic regulatory genes spanning new fibroblastic and osteoblastic subpopulations including distinct osteoblast differentiation trajectories. Emerging acute myeloid leukemia impaired mesenchymal osteogenic differentiation and reduced regulatory molecules necessary for normal hematopoiesis. These data suggest that tissue stroma responds to malignant cells by disadvantaging normal parenchymal cells. Our taxonomy of the stromal compartment provides a comprehensive bone marrow cell census and experimental support for cancer cell crosstalk with specific stromal elements to impair normal tissue function and thereby enable emergent cancer.
Original language | American English |
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Pages (from-to) | 1915-1932.e16 |
Journal | Cell |
Volume | 177 |
Issue number | 7 |
DOIs | |
State | Published - 13 Jun 2019 |
Externally published | Yes |
Bibliographical note
Funding Information:We thank Professor Henry Kronenberg for helpful comments, Leslie Gaffney and Anna Hupalowska for helping with figures, and Carl de Boer, Christopher Smillie, Adam Haber, Joshua Gould, and Bo Li for additional help. N.B. was funded by the Swedish Research Council and The Childhood Cancer Foundation in Sweden. M.S.K. was supported by Charles A. King Trust Postdoctoral Research Fellowship Program and the Simeon J. Fortin Charitable Foundation . Work was supported by the Klarman Cell Observatory and HHMI (to A.R.), NIH ( DK107784 ), and the Gerald and Darlene Jordan Professorship (to D.T.S.).
Funding Information:
We thank Professor Henry Kronenberg for helpful comments, Leslie Gaffney and Anna Hupalowska for helping with figures, and Carl de Boer, Christopher Smillie, Adam Haber, Joshua Gould, and Bo Li for additional help. N.B. was funded by the Swedish Research Council and The Childhood Cancer Foundation in Sweden. M.S.K. was supported by Charles A. King Trust Postdoctoral Research Fellowship Program and the Simeon J. Fortin Charitable Foundation. Work was supported by the Klarman Cell Observatory and HHMI (to A.R.), NIH (DK107784), and the Gerald and Darlene Jordan Professorship (to D.T.S.). Conceptualization, N.B. D.P. M.S.K. A.R. and D.T.S; Investigation, N.B. M.S.K. N.S. K.G. A.P. F.M. D.D. K.D.K. M.H. D.D. O.R.-R. and D.L; Validation, N.B. and K.D.K.; Computational Investigation and Analysis, D.P. with help and code contributions from M.T. M.H. A.S. O.A. and E.D.V.; Writing – Original Draft, N.B. D.P. M.K. A.R. and D.T.S.; Writing – Review & Editing, N.B. D.P. M.K. Y.K. N.S. K.D.K. A.R. and D.T.S; Funding Acquisition, Resources, & Supervision, A.R. and D.T.S. D.T.S. is a director and shareholder of Magenta Therapeutics, Agios Pharmaceuticals, Editas Medicines, Clear Creek Bio, Red Oak Medicines, and LifeVaultBio, a shareholder of Fate Therapeutics, a consultant for Magenta Therapeutics, Clear Creek Bio, Red Oak Medicines, and VCanBio, and a SAB member of FOG Pharma. A.R. is a founder and equity holder of Celsius Therapeutics and a member of the SAB for ThermoFisher Scientific and Syros Pharmaceuticals. M.S.K. is employed by Celsius Therapeutics. The authors have filed for a patent (62/808,177).
Publisher Copyright:
© 2019 Elsevier Inc.
Keywords
- bone marrow niche
- hematopoiesis
- leukemia
- single-cell RNA-sequencing
- stem cell
- stroma
- tumor microenvironment