We have developed an efficient and reproducible method for RNA transfection, using a synthetic cationic lipid, N-[1-(2,3-dioleyloxy)propyl]-N,N,N-trimethylammonium chloride (DOTMA), incorporated into a liposome (lipofectin). Transfection of 10 ng to 5 micrograms of Photinus pyralis luciferase mRNA synthesized in vitro into NIH 3T3 mouse cells yields a linear response of luciferase activity. The...

The neu oncogene encodes a 185-kDa transmembrane glycoprotein tumor antigen, termed p185. We have recently described a monoclonal antibody reactive with a cell surface domain of the p185 molecule. In vivo treatment with this anti-p185 monoclonal antibody was able to significantly inhibit the tumorigenic growth of neu-transformed NIH 3T3 cells implanted into nude mice. Such treatment had no effe...

We employed the equine lentivirus equine infectious anemia virus (EIAV) to investigate the cellular restrictions for lentivirus replication in murine NIH 3T3 cells. The results of these studies demonstrate that NIH 3T3 cells expressing the EIAV receptor ELR1 and equine cyclin T1 supported productive replication of EIAV and produced infectious virions at levels similar to those found in a refere...

AT cells are extremely sensitive to ionizing radiation. Since the AT gene has homology to phosphatidylinositol 3 kinases(P13-kinases),wortman nm,a specificinhibitorofPI 3-kinase,wasusedtodetermineif P13-kinase activity regulates radiation sensitivity. Human and murine cells exposed to wortmannin alonedid not display significant cytotoxicity. Wortmanmn in combination with radiation was an effect...

AT cells are extremely sensitive to ionizing radiation. Since the AT gene has homology to phosphatidylinositol 3 kinases(P13-kinases),wortman nm,a specificinhibitorofPI 3-kinase,wasusedtodetermineif P13-kinase activity regulates radiation sensitivity. Human and murine cells exposed to wortmannin alonedid not display significant cytotoxicity. Wortmanmn in combination with radiation was an effect...