Krause, Stefan W. and Zaiss, Matthias and Kreutz, Marina and Andreesen, Reinhard (2001) Activation of lymphocytes inhibits human monocyte to macrophage differentiation. IMMUNOBIOLOGY, 203 (5). pp. 709-724. ISSN 0171-2985
Full text not available from this repository. (Request a copy)Abstract
Tissue macrophages (MAC) differentiate from circulating blood monocytes (MO) during a maturation step that is of crucial importance for their functional competence. In vitro a similar process of maturation can be observed, if MO are cultured in the presence of serum. In the work presented here, we show that activated lymphocytes can interfere with MAC differentiation. Resting lymphocytes have only marginal influence upon MO to MAC transition in vitro. However, if cells are activated by the lectins PV,PWM or ConA or by double-stranded RNA (polyinosinic-polycytidylic acid, pI:C), normal MAC maturation is suppressed: MO stay small and do not acquire MAC maturation-associated surface molecules like carboxypeptidase M (CPM, determined by antibody MAX. 1) or CD84 (determined by antibody MAX.3). This phenomenon can be induced by small numbers of lymphocytes and can be transmitted by soluble factors in cultures stimulated with ConA or PWM. IFN-gamma is present in these conditioned media and partially suppresses MAC maturation but cannot fully substitute for the conditioned media. On the contrary, in pI:C stimulated Cultures, suppression of MAC differentiation is dependent on cell-cell contact. In conclusion, activated lymphocytes are able to suppress the terminal differentiation of MAC by several pathways depending on the mode of lymphocyte stimulation.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | HUMAN PERIPHERAL-BLOOD; COLONY-STIMULATING FACTOR; DENDRITIC CELLS; DEVELOPMENTAL REGULATION; INVITRO DIFFERENTIATION; CARBOXYPEPTIDASE-M; CYTO-TOXICITY; MATURATION; ANTIGEN; EXPRESSION; |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Innere Medizin III (Hämatologie und Internistische Onkologie) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Dec 2021 09:46 |
| Last Modified: | 14 Dec 2021 09:46 |
| URI: | https://pred.uni-regensburg.de/id/eprint/41222 |
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