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Densitometry was performed on each spot using Image J software (NIH, Bethesda, MD), and a ratio of phosphorylated proteins relative to the loading http://www.selleckchem.com/products/lgk-974.html control values for each treatment were computed. Ratios were expressed relative to the siRNA negative control, vehicle or vector control samples from the same timepoint. Raw data using MAPK arrays are shown in Supporting Information Figure 2. Experiments were repeated at least three times, and results shown are representative of replicates. One Lewis rat was immunized with human recombinant Reg IV generated in-house for 4 months. The inguinal and popliteal nodes were subsequently harvested and fused by electrofusion using Cyto Pulse Sciences (Columbia, MD) Model PA-101C Electrofusion System. To test for specificity and cross-reactivity, mouse Reg IV, human Reg IV and Reg I ELISAs were employed. http://www.selleck.cn/products/VX-809.html Plates were coated with in-house human Reg IV, human Reg I or mouse Reg IV at 0.5 ug/mL (50 uL total volume in PBS) overnight at 4��C. Supernatant from fusions (50 uL) was incubated on coated plates for 1 hr at room temperature, followed by 1:2,000 of goat anti-rat HRP Ab (Jackson Laboratories, Bar Harbor, ME) for 30 min at room temperature. ABTS (50 uL/well) was added to wells and incubated for 10 min at room temperature. Absorbance was read at 405 nm. PC3 cells were seeded at 1 �� 103 cells/well in triplicates in 96-well tissue culture plates and allowed to adhere and grow overnight. Cells were replaced in serum-free medium overnight before treatment with Reg IV antibodies. The cells then were treated with six doses of anti-Reg IV or isotype control antibody for five days in serum-free medium. http://www.selleckchem.com/products/17-AAG(Geldanamycin).html The MTT assay (Roche, Indianapolis, IN) was performed based on manufacturer's protocol. PC3 and KM12 cells were transfected with 75 nM siRNA pools for 24 hr and replated in six-well plates to grow overnight. Cells were serum starved in serum-free medium overnight and treated with 3 nM EGF and 200 nM insulin for 5 min. Lysates were applied to SDS-PAGE with DTT for phospho-Tyr and Reg IV in KM12 and without DTT for Reg IV in PC3 cells. RNA was isolated from HCT116, PC3 and KM12 cells using the RNEasy kit (Qiagen, Valencia, CA). Reg IV message levels were assayed by Taqman analysis using commercial primers and were normalized to ubiquitin levels. A two-tailed Student's t test was used for statistical analysis of comparative data using GraphPad Prism. Data were expressed as means of at least three independent experiments �� SD, with p