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Research article - Peer-reviewed, 2007

Bcl-2 and Bcl-XL are indispensable for the late phase of mast cell development from mouse embryonic stem cells

Möller, Christine; Karlberg, Mats; Åbrink, Magnus; Nakayama, Keiichi I.; Motoyama, Noboru; Nilsson, Gunnar


Objective. The aim of this study was to determine the importance of the prosurvival factors Bcl-2 and Bcl-XL for mast cell development and survival.Methods. bcl-x(-/-) and bcl-2(-/-) mouse embryonic stem cells were maintained in medium supplemented with either interleukin (IL)-3 or IL-3 in combination with stem cell factor (SCF) to favor mast cell development. The development of Bcl-2 family deficient embryonic stem cell-derived mast cells (ESMCs) was monitored and Bcl-2 family gene expression and cell numbers were analyzed.Results. Deficiency in either bcl-x or bcl-2 totally inhibited the development of ESMCs when IL-3 alone was used as a mast cell growth factor. Intriguingly, when IL-3 was used in combination with SCF, the ESMCs developed normally the first 2 weeks but thereafter the cell numbers dropped drastically. The remaining ESMCs express mouse mast cell protease 1, suggesting a mucosal-like phenotype. ESMCs lacking bcl-x or bcl-2 exhibited strong expression of A1, another prosurvival Bcl-2 family member.Conclusion. For the first time we provide direct evidence that both bcl-x and bcl-2 are indispensable for mast cell survival during the late phase of their development. (c) 2007 International Society for Experimental Hematology. Published by Elsevier Inc.

Published in

Experimental Hematology
2007, volume: 35, number: 3, pages: 385-393

Authors' information

Möller, Christine
Karolinska Institute
Karlberg, Mats
Karolinska Institute
Swedish University of Agricultural Sciences, Department of Molecular Biosciences
Nakayama, Keiichi I.
Kyushu University
Motoyama, Noboru
National Center for Geriatrics and Gerontology
Nilsson, Gunnar
Karolinska Institute

UKÄ Subject classification

Cell Biology

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