Cloning and Expression of Scavenger Receptor Class B BmSCRB8 in Silkworm Bombyx mori

Yuzu Zhao1 Kui Zhang1 Mei Tang1 Man Xu1 Chongyang Li1 Guangzhao Pan1 Li Shen1 Hongjuan Cui1 Liqun Yang1

(1.State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China 400716)

【Abstract】Scavenger receptor class B is involved in various indispensable physiological processes, like the formation and inhibition of atherosclerosis or other cardiovascular diseases, innate immune defense and the removal of apoptotic cells. Here, we cloned BmSCRB8, a member of scavenger receptor class B in silkworm. We obtained the full-length cDNA sequence of BmSCRB8 by rapid amplification of cDNA ends (RACE), including 2 668 bp. The ORF of BmSCRB8 is 1 704 bp, encoding 567 amino acids. Online software prediction indicated that the molecular weight of BmSCRB8 was 63.87 kDa and the isoelectric point (pI) was 6.06. The space-time expression profile of BmSCRB8 was detected by reverse transcription PCR (RT-PCR), which implicated that BmSCRB8 was extensively expressed in each tissue and at each stage of blood. In addition, BmSCRB8 was highest expressed in fat body of silkworm, and was highly expressed in metamorphosis periods. Anti-BmSCRB8 polyclonal antibody was generated through prokaryotic expression, protein purification and mice immunization. Simultaneously, we constructed BmSCRB8 eukaryotic vector and then transfected embryonic cell line of silkworm. Immunofluorescence and overexpression showed that BmSCRB8 expressed specifically in membrane. Western blotting demonstrated that BmSCRB8 protein can be specifically recognized by anti-serum generated after mice immunization.

【Keywords】 Bombyx mori; BmSCRB8; expression profile; polyclonal antibody; subcellular localization;


【Funds】 National Basic Research Program of China (973 Program) (No. 2012CB114603) National Basic Research Program of China(973 Program)(No.2012CB114603) National Natural Science Foundation of China (No. 81201551) National Natural Science Foundation of China(No.81201551) Fundamental Research Funds for the Central Universities (No. XDJK2013B020) the Fundamental Research Funds for the Central Universities(No.XDJK2013B020) Disciplinary Team Program of the Fundamental Research Funds for the Central Universities (No. 2362015XK09) Disciplinary Team Program of the Fundamental Research Funds for the Central Universities(No.2362015XK09) Postgraduate Technology Innovation Program of Chongqing (No. CYB2015067) Postgraduate Technology Innovation Program of Chongqing(No.CYB2015067) Basic Research Specialized Funds of Southwest University (No. XDJK2015D021) Basic Research Specialized Funds of Southwest University(No.XDJK2015D021)

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(Translated by FANG Huaming)


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This Article


CN: 11-1998/Q

Vol 32, No. 10, Pages 1408-1421

October 2016


Article Outline



  • 1 Materials and methods
  • 2 Results and analysis
  • 3 Discussion
  • References