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Apolipophorin-III uptake by the adult testes in the wax moth, Galleria mellonella

꿀벌부채명나방 성충 정소에 의한 아포리포포린-III의 흡수

  • Yun, Hwa-Kyung (Department of Biological Sciences, Hanseo University)
  • 윤화경 (한서대학교 생명과학과)
  • Received : 2016.07.28
  • Accepted : 2016.10.07
  • Published : 2016.10.31

Abstract

Apolipophorin-III (apoLp-III) was isolated and purified from the last larval hemolymph of Galleria mellonella by KBr gradient ultracentrifugation and gel chromatography (Sephadex G-100). After KBr gradient ultracentrifugation, the lipophorin-free fractions were used as the samples for gel chromatography. The purity of the finally purified apoLp-III was confirmed by SDS-PAGE after gel chromatography. In this study, we found that apoLp-III is taken up into the adult testes in Galleria mellonella. The testes were dissected from day-1 or -2 adults in cold Ringer's solution and used for tissue culture. The protein moiety of apoLp-III was labeled with FITC dissolved in dimethyl sulfoxide (DMSO) at room temperature under conditions of continuous stirring for 1 h. The FITC-labeled apoLp-III was purified with a Sephadex G-25 PD-10 column. The tissues of the adult testes were incubated at room temperature for 30 min with fluorescein isothiocyanate (FITC)-labeled apoLp-III. Fluorescein microscopy and sodium dodecyl sulfate (SDS)-polyacrylamide gel electrophoresis (PAGE) revealed that the adult testis tissues internalize the FITC-labeled apoLp-III. The results showed that apoLp-III is taken up by the adult testes.

아포리포포린-III (apoLp-III)를 꿀벌부채명나방 종령 유충 혈림프로부터 KBr 농도구배 초원심분리와 겔크로마토그래피(Sephadex G-100)를 이용하여 분리, 정제하였다. KBr 농도구배 초원심분리가 끝난 후, 리포포린을 제외한 분획 (lipophorin-free fractions)을 겔크로마토그래피 시료로 사용하였으며, 겔크로마토그래피를 행한후 sodium dodecyl sulfate (SDS)-전기영동으로 apoLp-III의 정제를 확인하였다. 또한, 본 연구에서는 유충 혈림프로부터 정제된 apoLp-III가 꿀벌부채명나방의 성충 정소에 의해 흡수되는 지를 조사하였다. 우화한 지 1일 또는 2일된 성충으로부터 성충 정소를 차가운 링거액에서 분리한 후 조직 배양의 시료로 사용하였다. 순수 정제한 apoLp-III를 dimethyl sulfoxide (DMSO)에 녹인 형광물질 fluorescein isothiocyanate (FITC)와 상온에서 계속 저어가면서 1시간 동안 배양하였다. FITC로 표지된 apoLp-III (FITC-labeled apoLp-III)를 Sephadex G-25 PD-10 column을 이용하여 정제하고 확인하였다. 정제된 FITC-labeled apoLp-III와 성충 정소 조직을 상온에서 30분간 배양하였다. 배양 후 형광현미경 (fluorescence Axioskop microscope)과 SDS-전기영동을 이용하여 FITC-labeled apoLp-III가 정소 조직으로 들어가는 지의 여부를 확인하였다. 그 결과 FITC-labeled apoLp-III가 성충 정소로 흡수된다는 사실을 알 수 있었다.

Keywords

References

  1. H.K. Yun, "Apolipophorin-III uptake by the adult ovary in the wax moth Galleria mellonella", Journal of The Korean Academia-Industrial cooperation Society, vol. 10, no. 3, pp. 620-624, 2009. https://doi.org/10.5762/KAIS.2009.10.3.620
  2. J.K. Kawooya, D.J. Van der Horst, M.C. Van Heusden, B.L. Brigot, R. Van Antwerpen, J.H. Law, "Lipophorin structure analyzed by in vitro treatment with lipase". J. Lipid Res. 32, pp. 1781-1788, 1991.
  3. M.C. Van Heusden, D.J. Van der Horst,, J.K. Kawooya, J.H. Law. "In vivo and in vitro loading of lipid by artificially lipid-depleted lipophorins : evidence for the role of lipophorin as a reusable lipid shuttle" J. Lipid Res. 32, pp. 1789-1794, 1991.
  4. Z.E. Jouni, H.K. Yun, M.A. Wells, "Cholesterol efflux from larval Manduca sexta fat body in vitro: high-density lipophorin as the receptor", J. Insect Physiol., 48, pp. 609-618, 2002. DOI: http://dx.doi.org/10.1016/S0022-1910(02)00081-1
  5. R. Ziegler, R.V. Antwerpen, "Lipid uptake by insect oocytes", Insect Biochem. Mol. Biol., 36, pp. 264-272, 2006. DOI: http://dx.doi.org/10.1016/j.ibmb.2006.01.014
  6. H.K. Yun, "The transfer of diacylglycerol from lipophorin to fat body in larval Manduca sexta" Journal of The Korean Academia-Industrial cooperation Society, vol. 12. no. 4, pp. 1770-1774, 2011. DOI: http://dx.doi.org/10.5762/KAIS.2011.12.4.1770
  7. E.S. Jung, J.H. Joe, H.K. Yun, "Lipophorin uptake by the laval fat body and adult ovary in the wax moth, Galleria mellonella", Entomol. Res., 36, pp. 167-171, 2006. DOI: http://dx.doi.org/10.1111/j.1748-5967.2006.00028.x
  8. E.S. Jung and H.K. Yun, "Receptor-mediated endocytosis of lipid and lipophorin by the larval fat body, adult ovary and testis in the wax moth Galleria mellonella", Entomol. Res., 37, pp. 60-65, 2007. DOI: http://dx.doi.org/10.1111/j.1748-5967.2007.00054.x
  9. J. Han, C.S. Lee, C.Y. Yun, B.H. Lee, Y.G. Ko, C.S. Kang, S.D. Lee, J.S. Hwang, S.W. Kang, H.R. Kim, "Cloning and expression of male-specific protein (MSP) from the hemolymph of greater wax moth, Galleria mellonella L.", Arch. Insect Biochem. Physiol. pp. 110-120, 2003.
  10. U.K. Laemmli, "Cleavage of structural proteins during assembly of the head of bacteriophage T4", Nature, pp. 680-685, 1970.
  11. D. Van Hoof. K.W. Rodenburg, D.J. Van der Horst, "Lipophorin receptor-mediated lipoprotein endocytosis in insect fat body cells", J. Lipid. Res., 44, pp. 1431-1440, 2003. https://doi.org/10.1194/jlr.M300022-JLR200
  12. H.K. Yun, "Apolipophorin-III uptake by the last larval fat body in the wax moth Galleria mellonella", Journal of The Korean Academia -Industrial cooperation Society, vol. 14. no. 8, pp. 4106-4110, 2013. DOI: http://dx.doi.org/10.5762/KAIS.2013.14.8.4106