PMID- 25487614 OWN - NLM STAT- MEDLINE DCOM- 20150709 LR - 20211203 IS - 1423-0380 (Electronic) IS - 1010-4283 (Linking) VI - 36 IP - 4 DP - 2015 Apr TI - Staurosporine analogs promote distinct patterns of process outgrowth and polyploidy in small cell lung carcinoma cells. PG - 2725-35 LID - 10.1007/s13277-014-2897-6 [doi] AB - We have recently shown that staurosporine mediates the conversion of small cell lung carcinoma (SCLC) cells into a neuron-like process-bearing phenotype. Here, we have extended these studies to the staurosporine analogs K252a, lestaurtinib, PKC412, stauprimide, and UCN-01 and analyzed their influence on process extension, cell cycle distribution, and induction of polyploidy in four SCLC cell lines. In GLC-2 cells, all compounds provoked extensive process formation with the exception of PKC412 that showed no response. In H1184 cells, process formation was predominantly induced by staurosporine and, to lesser extent, in lestaurtinib-, stauprimide-, and UCN-01-treated cells. In the presence of K252a or PKC412, cells became bipolar and spindle shaped or showed pronounced cell flattening. In GLC-36 and SCLC-24H cells, only cell flattening was detectable. Process formation was reversible upon drug removal as shown for GLC-2 and H1184 cells. Fluorescence-activated cell sorting (FACS) and fluorescence in situ hybridization (FISH) analysis indicated the induction of polyploidy in all staurosporine and in two out of four stauprimide-treated SCLC cell lines. For other staurosporine analogs, polyploidy was observed only in UCN-01-treated GLC-36 cells and in K252a-treated H1184 and GLC-36 cells. The presence of staurosporine or its analogs did not alter the constitutive activation pattern of the canonical Akt/PI3K or MEK/extracellular signal-regulated kinase (ERK)1/2 signaling pathways nor could we detect an influence of stauprimide application on the expression level of the c-Myc oncogene. These data demonstrate that in SCLC cells, albeit a higher substrate specificity, staurosporine analogs can induce staurosporine-comparable effects. FAU - Gallala, Hichem AU - Gallala H AD - Department of Hematology/Oncology, University of Bonn, Bonn, Germany. FAU - Winter, Jochen AU - Winter J FAU - Veit, Nadine AU - Veit N FAU - Nowak, Michael AU - Nowak M FAU - Perner, Sven AU - Perner S FAU - Courts, Cornelius AU - Courts C FAU - Kraus, Dominik AU - Kraus D FAU - Janzen, Viktor AU - Janzen V FAU - Probstmeier, Rainer AU - Probstmeier R LA - eng PT - Journal Article DEP - 20141207 PL - Netherlands TA - Tumour Biol JT - Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine JID - 8409922 RN - 0 (Carbazoles) RN - 0 (Furans) RN - 0 (Indole Alkaloids) RN - 97161-97-2 (staurosporine aglycone) RN - DO989GC5D1 (lestaurtinib) RN - H88EPA0A3N (Staurosporine) RN - ID912S5VON (midostaurin) SB - IM MH - Carbazoles/administration & dosage MH - Cell Cycle/*drug effects MH - Cell Line, Tumor MH - Cell Proliferation/*drug effects MH - Furans MH - Humans MH - Indole Alkaloids/administration & dosage MH - Polyploidy MH - Signal Transduction/drug effects MH - Small Cell Lung Carcinoma/*drug therapy/pathology MH - Staurosporine/*administration & dosage/analogs & derivatives EDAT- 2014/12/10 06:00 MHDA- 2015/07/15 06:00 CRDT- 2014/12/10 06:00 PHST- 2014/08/23 00:00 [received] PHST- 2014/11/26 00:00 [accepted] PHST- 2014/12/10 06:00 [entrez] PHST- 2014/12/10 06:00 [pubmed] PHST- 2015/07/15 06:00 [medline] AID - 10.1007/s13277-014-2897-6 [doi] PST - ppublish SO - Tumour Biol. 2015 Apr;36(4):2725-35. doi: 10.1007/s13277-014-2897-6. Epub 2014 Dec 7.