Molecular Biology Reports

, Volume 37, Issue 6, pp 2621–2628 | Cite as

Molecular cloning and expression characterization of translationally controlled tumor protein in silkworm pupae

  • Zuoming Nie
  • Zhengbing Lv
  • Jiawei Qian
  • Jian Chen
  • Shanshan Li
  • Qing Sheng
  • Dan Wang
  • Hongdan Shen
  • Wei Yu
  • Xiangfu Wu
  • Yaozhou Zhang


A Bombyx mori (B. mori) cDNA was isolated from silkworm pupae cDNA library encoding a homologue of translationally controlled tumor protein (BmTCTPk). BmTCTPk was expressed in E. coli; SDS–PAGE and Western blot showed the molecular weight of recombinant and native BmTCTPk is approximately 28 and 25 kDa, respectively; they are larger than the theoretical molecular weight. Immunohistochemical studies showed that BmTCTPk is uniformly distributed throughout the cytoplasm of BmN cells. In silkworm pupae, BmTCTPk is expressed in the midgut wall, the midgut cavity, and some fat body tissues lying between the midgut wall and body wall. Western blot and ELISAs performed on total protein extracts isolated from silkworm pupae at different development stages showed that, although BmTCTPk is expressed during all pupae stages, its expression level increases dramatically during late pupae stages, suggesting that BmTCTPk may play an important role during the developmental transition from pupa to imago.


Translationally controlled tumor protein Silkworm pupae Expression analysis Immunohistochemical localization Subcellular localization 



This work was supported by financial grants from the National Basic Research Program of China (No. 2005CB121006), the National High Technology Research and Development Program (No. 2007AA021703, No. 2007AA100504).


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Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  • Zuoming Nie
    • 1
  • Zhengbing Lv
    • 1
  • Jiawei Qian
    • 1
  • Jian Chen
    • 1
  • Shanshan Li
    • 1
  • Qing Sheng
    • 1
  • Dan Wang
    • 1
  • Hongdan Shen
    • 1
  • Wei Yu
    • 1
  • Xiangfu Wu
    • 1
  • Yaozhou Zhang
    • 1
  1. 1.Institute of BiochemistryZhejiang Sci-Tech UniversityHangzhouPeople’s Republic of China

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