Figure 1

Expression of Wnt and Frizzled genes in mouse totipotent teratocarcinoma F9 embryonal cells. RNA was extracted from mouse F9 cells and then reverse-transcribed (RT) to the first strand cDNA. PCR amplification of the cDNA was conducted using specific primers for mouse Wnt1 through Wnt16, mouse Frizzled-1 through Frizzled-10 as well as for LRP5 and LRP6 (Tables 1, 2). The predicted sizes of the PCR products are listed in Tables 1 and 2. Data displayed are from one set of representative RT-PCR products of mouse F9 cells with primers specific for Wnts (A), Frizzleds (B), and LRP5/6 (C). R and RT in panel B indicate results of PCR performed on either the total RNA or the products of reverse transcription, respectively. Markers of DNA fragments (MK, bp) are provided and sizes labeled. In the case of appearance of multiple bands in panels A and B, each band of PCR product was purified and sequenced. * denoted the band corresponding to expected Wnt or Fz. Extraction of RNA were performed and subjected to RT-PCR using whole-cell preparations from at least three independent sources, each prepared on separate occasions.