Related Experiment Video
Updated: Jul 8, 2026

Experimental Generation of Carcinoma-Associated Fibroblasts (CAFs) from Human Mammary Fibroblasts
Published on: October 25, 2011
Activation of the feline c-fms proto-oncogene: multiple alterations are required to generate a fully transformed
J Woolford1, A McAuliffe, L R Rohrschneider
1Department of Cell Biology, Fred Hutchinson Cancer Research Center, Seattle, Washington 98104.
Abstract:
The v-fms oncogene is capable of producing tumors in vivo and transforming cells in culture; in contrast, the c-fms proto-oncogene is nontransforming. In this report we present the complete nucleotide sequence of a feline c-fms cDNA, the progenitor of the v-fms oncogene. Comparison of this sequence with that of v-fms shows that the proteins encoded by these two genes differ by nine amino acid substitutions and the replacement of 50 C-terminal amino acids present in c-fms by 11 unrelated residues in v-fms. Using chimeric fms genes and site-directed mutagenesis, we have determined that the C-terminal modification present in v-fms is sufficient to generate a partially transforming phenotype, but that mutations at amino acid positions 301 and 374 are required (in addition to the C-terminal modification) to generate a fully transforming fms gene.
Related Concept Videos
Mitogens and the Cell Cycle
Cancers Originate from Somatic Mutations in a Single Cell
Cancer-Critical Genes I: Proto-oncogenes
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
The Ras Gene
Ras is a superfamily...
MAPK Signaling Cascades
Induced Pluripotent Stem Cells
Somatic cells are...

