Isolation of the most immature population of murine fetal thymocytes that includes progenitors capable of generating T, B, and myeloid cells

Noboru Hattori, Hiroshi Kawamoto, Yoshimoto Katsura

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52 Citations (Scopus)

Abstract

Thymus cells of murine fetuses at day 12 of gestation are exclusively of the CD3-CD4-CD8-CD44+CD25+ phenotype, which is known as a hallmark of the most immature subset of thymus cells. In the present study, we show that day 12 fetal thymus (FT) cells express FcγRII/III (FcR) at a broad range of levels on their surface. The FcR+ FT cells seem to represent T lineage cells, because a large majority of them express the T lineage specific transcription factors TCF-1 and GATA-3 as well as CD3ε in the cytoplasm. Also shown is that the FcR- population contains progenitors capable of developing into not only T cells but also B and myeloid cells, whereas FcR+ progenitors are mostly committed to the T lineage. These findings indicate that thymic T lineage cells express FcR on their surface at the earliest stage of differentiation, and thus FcR is a useful marker in isolating the most immature population of murine FT cells.

Original languageEnglish
Pages (from-to)1901-1908
Number of pages8
JournalJournal of Experimental Medicine
Volume184
Issue number5
DOIs
Publication statusPublished - 01-11-1996
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Immunology and Allergy
  • Immunology

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