Abstract:
:The mutant tg/tg mice, which do not express mi transcription factor (MITF), lack mast cells in most tissues. Since MITF is expressed in both mast cells and tissues where mast cells develop, there is a possibility that the tg/tg mice may show abnormalities in both mast cell precursors and tissue environments. We examined this possibility by bone marrow and skin transplantation. When bone marrow cells of tg/tg mice were transplanted to W/W(v) mice that possess normal tissue environment, mast cells did not develop in all tissues examined. The number of developing mast cells in the skin of W/W(v) mice was much lower when grafted to tg/tg recipients than when grafted to normal (+/+) recipients. These results indicated that mast cell precursors of tg/tg mice were defective. When bone marrow cells of +/+ mice were transplanted, the number of developing mast cells was significantly lower in examined tissues of tg/tg recipients than in those of W/W(v) recipients, suggesting that the tissue environment for mast cell development was defective in tg/tg mice. MITF appeared essential for the function of both mast cell precursors and tissue environments for their development.
journal_name
Bloodjournal_title
Bloodauthors
Morii E,Oboki K,Ishihara K,Jippo T,Hirano T,Kitamura Ydoi
10.1182/blood-2004-01-0247subject
Has Abstractpub_date
2004-09-15 00:00:00pages
1656-61issue
6eissn
0006-4971issn
1528-0020pii
2004-01-0247journal_volume
104pub_type
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