“…From these results, we suggest endogenous IL-6 as a survival factor in our cellular model. Mcl-1, which is highly expressed in hematopoietic cells, is an antiapoptotic member of the Bcl-2 family (Craig, 2002). In multiple myeloma (MM) cells, in which IL-6 plays a critical role in proliferation and survival, upregulation of Mcl-1 was shown to mediate the antiapoptotic effect of IL-6 (Jourdan et al, 2003), whereas the downregulation of the gene by antisense technology led to apoptosis (Derenne et al, 2002;Zhang et al, 2002;Le Gouill et al, 2004).…”