|ZFIN ID: ZDB-PUB-100223-24|
Development of multilineage adult hematopoiesis in the zebrafish with a runx1 truncation mutation
Sood, R., English, M.A., Belele, C.L., Jin, H., Bishop, K., Haskins, R., McKinney, M.C., Chahal, J., Weinstein, B.M., Wen, Z., and Liu, P.P.
|Source:||Blood 115(14): 2806-2809 (Journal)|
|Registered Authors:||English, Milton A., Haskins, Rebecca, Liu, Pu Paul, McKinney, Cathy, Sood, Raman, Weinstein, Brant M., Wen, Zilong|
|PubMed:||20154212 Full text @ Blood|
Sood, R., English, M.A., Belele, C.L., Jin, H., Bishop, K., Haskins, R., McKinney, M.C., Chahal, J., Weinstein, B.M., Wen, Z., and Liu, P.P. (2010) Development of multilineage adult hematopoiesis in the zebrafish with a runx1 truncation mutation. Blood. 115(14):2806-2809.
ABSTRACTRunx1 is required for the emergence of hematopoietic stem cells (HSCs) from hemogenic endothelium during embryogenesis. However, its role in the generation and maintenance of HSCs during adult hematopoiesis remains uncertain. Here, we present analysis of a zebrafish mutant line carrying a truncation mutation, W84X, in runx1. The runx1(W84X/W84X) embryos showed blockage in the initiation of definitive hematopoiesis, but some embryos were able to recover from a larval "bloodless" phase and develop to fertile adults with multi-lineage hematopoiesis. Using cd41-GFP transgenic zebrafish and lineage tracing, we demonstrated that the runx1(W84X/W84X) embryos developed cd41(+) HSCs in the aorta-gonad-mesonephros (AGM) region, which later migrated to the kidney, the site of adult hematopoiesis. Overall, our data suggest that in zebrafish adult HSCs can be formed without an intact runx1.