Inhibition of the proliferation of myeloma cells by the meat origin strain Enterococcus faecium CH3

Ten lactic acid bacteria strains were isolated from a dry fermented sausage and tested for stimulation or inhibition of the proliferation of Vero and myeloma cells by MTT assay. None of the strains significantly affected the proliferation of Vero cells. However, one isolate (CH3) showed a strong inhibition of myeloma cells proliferation. Isolate CH3 was submitted to a characterisation scheme and identified as Enterococcus faecium by SDS-PAGE protein profiling and DNA sequencing of 16S rRNA PCR products.