6533b7d9fe1ef96bd126ce04
RESEARCH PRODUCT
Effects of two organotin(IV)(sulfonato phenyl)porphynates on the MAPKs and on the growth of A375 human melanoma cells
L. GulinoClaudia PelleritoLorenzo PelleritoGiovanna BarbieriTiziana FioreMaria Assunta Costasubject
MAPK/ERK pathwayCancer ResearchPorphyrinsp38 mitogen-activated protein kinasesBlotting WesternAntineoplastic AgentsApoptosischemistry.chemical_compoundCell Line TumorOrganotin CompoundsHumansMelanomaCell ProliferationbiologyKinaseCell growthGeneral MedicineA375 melamoma cells meso-tetra(4-sulfonato phenyl)porphinate MAPKs FAK cell growthMolecular biologyPorphyrinIn vitroMicroscopy Fluorescence MultiphotonOncologyBiochemistrychemistryApoptosisSettore CHIM/03 - Chimica Generale E InorganicaMitogen-activated protein kinasebiology.proteinMitogen-Activated Protein Kinasesdescription
Previously we showed apoptotic induction in A375 human melanoma cells using two complexes of the meso-tetra(4-sulfonatophenyl)porphinate (TPPS), (Bu 2 Sn) 2 TPPS and (Bu 3 Sn) 4 TPPS. To understand how these compounds activate apoptosis in melanoma cells we studied MAPKs and the (Bu 2 Sn) 2 TPPS and (Bu 3 Sn) 4 TPPS cellular uptake. Western blotting experiments showed activated protein kinases ERK 1/2, JNK and p38 in 10 μM (Bu 2 Sn) 2 TPPS- and 1 μM (Bu 3 Sn) 4 TPPS-treated melanoma cells, which suggests that the three MAP kinases are involved in the apoptotic death of A375-treated cells. By taking advantage of the porphyrin fluorescence, we found a fast concentration of (Bu 2 Sn) 2 TPPS and (Bu 3 Sn) 4 TPPS in the nucleus and in the nucleoli compared to TPPS. A significantly reduced growth of A375 human melanoma cells was also observed after only 48 h treatment by using 500 nM of (Bu 2 Sn) 2 TPPS or 80 nM of (Bu 3 Sn) 4 TPPS. A strong slowdown of cell growth and loss of cell-cell interactions were visible by in vitro wound repair assay.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-07-06 |