Endogenous RAC1 P29S in mouse melanoma

We studied the effects of endogenous expression of the melanoma oncogene RAC1 P29S in BRAF V600E;PTEN hemizygous mouse melanomas. Overall design: Transgenic mice with a conditional knock-in of the P29S mutation in the endogenous Rac1 locus were generated and crossed onto C57BL/6J, Tyr-CreER;BrafCA/wt;Ptenfl/wt mice. Melanomas were induced by topical 4OH-tamoxifen. We compared the gene expression profile in whole tumour lysates from Tyr-CreER+/-;Ptenfl/wt;BrafCA/wt;Rac1LSL-P29S/wt mice versus Tyr-CreER+/-;Ptenfl/wt;BrafCA/wt;Rac1wt/wt mice (n = 6 tumours from 5-6 animals per group).

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Lionarons DA, Hancock DC, Rana S, East P, Moore C, Murillo MM, Carvalho J, Spencer-Dene B, Herbert E, Stamp G, Damry D, Calado DP, Rosewell I, Fritsch R, Neubig RR, Molina-Arcas M, Downward J