Macrophage migration inhibitory factor is an endogenous regulator of stress-induced extramedullary erythropoiesis
| Autor: | Olivera Mitrović Ajtić, Sanja Vignjević Petrinović, Gordana Jovčić, Dragana Marković, Slavko Mojsilović, Vladan P. Čokić, Stanislava Stosic-Grujicic, Mirela Budeč, Mirjana Gotic, Milan Ivanov |
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| Rok vydání: | 2016 |
| Předmět: |
Male
0301 basic medicine medicine.medical_specialty Histology medicine.medical_treatment Spleen Transferrin receptor Biology Stress Proinflammatory cytokine Mice 03 medical and health sciences Erythroid Cells Stress Physiological Internal medicine medicine Animals Chronic stress Erythropoiesis Bone marrow Macrophage Migration-Inhibitory Factors Molecular Biology Mice Knockout MIF Cell Biology Mice Inbred C57BL Medical Laboratory Technology 030104 developmental biology medicine.anatomical_structure Cytokine Endocrinology Macrophage migration inhibitory factor |
| Zdroj: | Histochemistry & Cell Biology Histochemistry and cell biology |
| Popis: | Macrophage migration inhibitory factor is a well-known proinflammatory cytokine that is released during systemic stress response. Although MIF can affect erythrocyte production, the role of this cytokine in stress-induced erythropoiesis is completely unknown. To extend our previous findings showing that chronic psychological stress stimulates extramedullary erythropoiesis, here we examined whether MIF is involved in the control of stress-induced erythropoietic response. Adult male C57BL/6 wild-type (WT) and MIF-KO (knock-out) mice were subjected to 2-h daily restraint stress for either 7 or 14 consecutive days. The number of erythroid progenitors and CD71/Ter119 profile of erythroid precursors were analyzed in the bone marrow and spleen. Additionally, MIF protein expression was assessed in WT mice. Our results demonstrated that chronic restraint stress enhanced the number of both erythroid progenitors and precursors in the spleen. Stress-induced increase in the number of splenic late erythroid progenitors as well as in the percentage of CD71(+)Ter119(+)-double-positive precursors was significantly more pronounced in MIF-KO mice compared to WT animals. Furthermore, repeatedly stressed WT animals demonstrated an augmented MIF expression in the spleen. Unlike the spleen, the bone marrow of chronically stressed WT mice exhibited less prominent changes in erythropoietic stress response and no significant alteration in MIF expression. In addition, MIF deficiency did not influence the bone marrow erythropoiesis in stressed animals. These findings suggest that MIF regulates extramedullary erythropoiesis by inhibiting an overexpansion of splenic immature erythroid cells during chronic stress and indicate a novel role for this cytokine under chronic stress conditions. |
| Databáze: | OpenAIRE |
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