Irradiation leads to apoptosis of Kupffer Cells by a HSP27- dependant pathway followed by release of TNF-alpha
K Tello, H Gürleyen, J Dudas, H Christiansen, F Hess, G Ramadori, B Saile · Zeitschrift für Gastroenterologie · 2007 · Heft 01
Bibliografische Angaben
Zusammenfassung
In our previous publication we were able to show that irradiation of Kupffer cells, the liver resident macrophages, leads to an increased TNF-α- concentration in the culture medium. The pathomechanisms underlying this phenomenon however left to be elucidated. Northern- Blot analysis revealed that TNF-α- gene expression of Kupffer- cells did not change due to irradiation indicating that changes of the TNF-α concentration in the culture medium is regulated on protein level. Following irradiation apoptosis rate increased drastically within 48h. Contemporarily total TNF-α concentration in cell lysates of Kupffer cel…