Generation of reversible Rb-knockdown mice

Sik Choi Yoon, Eun Lee Jae, Cheolho Cheong, Hoon Sung Young, Young Yang Eun, Bae Park Chan, Jaewhan Song, Chul Park Sang, Han Woong Lee

Research output: Contribution to journalArticlepeer-review


This study describes the generation of reversible Rb-knockdown mice using Tet-off system coupled with Rb-deficient mice currently available. Mice expressing pRB conditionally in Rb-/- background were generated by crossings PhCMV-tTA/TRE-Rb transgenic mice with conventional Rb +/- mice. Transgenic Rb was tightly controlled with reversibility and biologically effective as exemplified by cyclin E expression in a doxycycline-dependent manner in mouse embryonic fibroblasts. However, its ectopic expression was not sufficient to rescue the phenotypes of Rb -/- embryos at organismal level, suggesting the requirement of more sophisticated regulation of pRB. With all, these results demonstrate that our experimental strategy can be an alternative way to convert classical gene-disrupted mice into reversible conditional ones.

Original languageEnglish
Pages (from-to)1164-1169
Number of pages6
JournalMechanisms of Ageing and Development
Issue number11
Publication statusPublished - 2005 Nov

Bibliographical note

Funding Information:
This work was supported by the following grants: FG01-0304-002-1-0-0 of the 21C Frontier Functional Human Genome Project, M103KV010018-03K2201-01830 of BRC-Frontier from the Korean Ministry of Science and Technology and SRC (Molecular Therapy Research Center) grant from KOSEF.

All Science Journal Classification (ASJC) codes

  • Ageing
  • Developmental Biology


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