Cell-based screening and validation of human novel genes associated with cell viability

J Biomol Screen. 2006 Jun;11(4):369-76. doi: 10.1177/1087057106286654. Epub 2006 Apr 28.


In the present study, a cell-based high-throughput assay is established to identify novel human genes associated with cell viability. The assay relies on the down-regulation of Renilla luciferase (pRL) activity in a 96-well format. In addition, 2-color fluorescence probes were used to distinguish living and dead cells. As the positive control, the authors used the expression vectors encoding Bax, TNFRSF1A, and TAJ, which were widely known to effectively induce programmed cell death. They screened 409 novel genes (including alternative mRNA splicing forms) cloned in their laboratory and found that 39 genes could significantly down-regulate pRL activity. A subsequent fluorescence-based assay revealed that 4 of the 39 genes (PIP5KL1, OLFM1, RNF122, FAM26B) were associated with cell viability. Further function assays validated that the 4 genes were able to induce both necrosis and apoptosis. These results therefore indicate that a rapid and effective screening system has been developed, which should shed light on some functions of novel genes.

Publication types

  • Research Support, Non-U.S. Gov't
  • Validation Study

MeSH terms

  • Apoptosis / genetics
  • Cell Line
  • Cell Survival / genetics*
  • Computational Biology
  • Flow Cytometry
  • Fluorescent Dyes
  • Gene Library
  • Genetic Testing / methods*
  • Genetic Testing / statistics & numerical data
  • Genome, Human
  • Humans
  • Luciferases, Renilla / genetics
  • Membrane Potentials
  • Microscopy, Fluorescence
  • Mitochondria / metabolism
  • Necrosis


  • Fluorescent Dyes
  • Luciferases, Renilla