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Hemopoietic colonies on the chorioallantoic membrane of the chick embryo: Induction by embryonic, adherent, non‐hemopoietic spleen cells
Author(s) -
Keller Gordon,
Longenecker Michael,
Diener Erwin
Publication year - 1980
Publication title -
journal of cellular physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.529
H-Index - 174
eISSN - 1097-4652
pISSN - 0021-9541
DOI - 10.1002/jcp.1041020310
Subject(s) - haematopoiesis , chorioallantoic membrane , embryo , embryonic stem cell , spleen , microbiology and biotechnology , biology , immunology , andrology , stem cell , medicine , genetics , gene
Granulocytic and erythrocytic colonies developed on the chick embryo chorioallantoic membrane (CAM) following the inoculation of chick embryo spleen cells. Dose response and kinetic experiments showed that the colonies were derived from cell aggregates present in the inoculum. Dissociation and reaggregation studies of the CAM colony‐inducing cells (CAM‐CIC) indicated that these cells must be present as aggregates in order to form colonies. Results from the morphology and cell marker experiments suggested that the colony‐inducing aggregates (CAM‐CIA) attract and support the differentiation of primitive host hemopoietic cells. The physical characteristics of the CAM‐CIC, which are different from those of the hemopoietic progenitor cells, indicated that they represent a stromal cell population of the chick embryo spleen. Further evidence supporting this notion was provided by the radiation studies which showed that the colony‐inducing ability of the CAM‐CIC is radioresistant. The above characteristics of the CAM‐CIC strongly suggest that they represent the stromal cells of the chick embryo spleen which influence hemopoiesis.