Titre
Subpopulations of early thymocytes. A cross-correlation flow cytometric analysis of adult mouse Ly-2-L3T4-(CD8-CD4-) thymocytes using eight different surface markers.
Type
article
Institution
Externe
Périodique
Auteur(s)
Wilson, A.
Auteure/Auteur
D'Amico, A.
Auteure/Auteur
Ewing, T.
Auteure/Auteur
Scollay, R.
Auteure/Auteur
Shortman, K.
Auteure/Auteur
Liens vers les personnes
ISSN
0022-1767
Statut éditorial
Publié
Date de publication
1988
Volume
140
Numéro
5
Première page
1461
Dernière page/numéro d’article
1469
Langue
anglais
Résumé
Putative early thymocytes, the Ly-2-L3T4-(CD8-CD4-) cells representing 3 to 4% of adult CBA mouse thymic lymphocytes, were isolated in high purity (99.5%). They were then stained by using mAb and analyzed by flow cytometry for the expression of six additional surface antigenic markers. Cross-correlation of the data obtained from a complete series of successive two-parameter analyses revealed the existence of about 11 discrete subsets, falling into four-main groups, within the Ly-2-L3T4- population. All subsets consisted of relatively large lymphoid cells. The most numerous group of Ly-2-L3T4- cells was Ly-1 low B2A2-M1/69 high Thy-1 high Pgp-1 low and by these markers resembled Ly-2+L3T4+ cortical blasts. Many of the cells in this group were positive for the IL-2R and/or for MEL-14. A second major group of Ly-2-L3T4- cells was Ly-1 high B2A2-M1/69 low Pgp-1 high, and resembled in some respects activated mature T cells. This group had previously been shown to be absent from the embryonic thymus. The group could be divided into Thy-1 high and Thy-1 low subsets. None of the cells in this group were positive for the IL-2R and very few expressed MEL-14. A third group, 13% of the Ly-2-L3T4- population, was Ly-1 low B2A2-M1/69 low Pgp-1 high, and could also be divided into Thy-1 high and Thy-1 low subsets. A final minor group, 9% of the Ly-2-L3T4- population, was Ly-1 high B2A2-M1/69 high Pgp-1 low Thy-1 high. The particular pattern of markers on these subsets, combined with subsequent information on their properties, makes it unlikely that they all represent sequential steps in one continuous developmental stream, and indicates that complex developmental steps have occurred, even at this supposedly early stage of T cell differentiation.
Sujets
PID Serval
serval:BIB_5F31E96B5FC9
PMID
Date de création
2013-04-10T11:47:46.460Z
Date de création dans IRIS
2025-05-20T18:35:37Z