Food Science of Animal Resources (한국축산식품학회지)

Korean Society for Food Science of Animal Resources (한국축산식품학회)
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Development of Polyclonal Antibodies to Abdominal and Subcutaneous Adipocyte for Producing Fat-reduced High Quality Pork

저지방 고품질 돈육 생산을 위한 돼지 복강 및 피하지방 항체 개발

  • Choi, Chang-Weon (Nutrition and Physiology Team, National Institute of Animal Science, RDA) ;
  • Baek, Kyung-Hoon (School of Biotechnology, Yeungnam University) ;
  • Choi, Chang-Bon (School of Biotechnology, Yeungnam University) ;
  • Oh, Young-Kyoon (Nutrition and Physiology Team, National Institute of Animal Science, RDA) ;
  • Hong, Seong-Koo (Nutrition and Physiology Team, National Institute of Animal Science, RDA)
  • Published : 2010.02.28
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Abstract

The aim of the present study was to develop polyclonal antibodies to regional inedible adipocytes of pigs and investigate the effect of these antibodies on adipocytes in vitro. As antigens, abdominal and subcutaneous adipocyte PMPs from pigs were injected into sheep 3 times per 3 wk intervals for passive immunization, and non-immunized serum, antisera against abodominal (AAb) or subcutaneous adipocyte PMPs (SAb) were collected before and after the injections. Titers of the antisera obtained from sheep and their cross-reactivities with the heart, kidney, liver, lung, muscle, and spleen of pig were determined by ELISA. Isolation and culture of abdominal and subcutaneous adipocytes from pigs were performed to analyze LDH concentration. At a 1:1,000 dilution, little antibody reactivity was observed for non-immunized serum whereas both AAb and SAb had relatively strong reactivity up to a dilution of 1:16,000. These findings may indicate that strong antibodies against adipocyte PMPs can be developed using an immunological approach. Extremely low reactivity of AAb and SAb was detected with the PMPs of the organs. Both antisera most strongly reacted with each adipocyte PMPs and showed statistically (p<0.05) higher cross-reactivities compared with the non-immunized serum. In conclusion, these results may indicate that the present polyclonal antibodies against regional inedible adipocyte PMPs are well developed and are safe against cross-reactivities with the organs of pigs. Further studies on the in vivo nutritional safety and fat reduction of these antibodies in pigs will be required fat-reduced high quality pork production.

본 연구는 저지방 고품질 돈육의 생산을 위해 돼지 복강 및 피하지방 감소를 위한 다클론 항체의 개발 및 실제 세포에 미치는 세포독성효과를 확인하고자 실시되었다. 항원으로써 돼지의 복강 및 피하지방세포 PMP를 분리하여 면양에 3회에 걸쳐 수동면역 주사하고, 면역 주사 전 및 후에 비면역혈청과 항체를 생산하였다. 돼지 AAb 및 SAb 항체의 역가와 생체 주요 장기 조직인 심장, 신장, 간장, 폐, 근육 및 비장세포의 PMP에 대한 타장기 교차반응성을 조사하였다. 돼지 부위별 지방 조직에서 지방세포를 분리하고 각각 primary 배양시킨 후 개발된 AAb 및 SAb를 주입한 뒤 media 내 LDH 방출 수준을 조사하였다. 희석배율 1:1,000배를 기준으로 비면역혈청은 항원-항체 결합반응이 거의 측정되지 않았고, AAb 및 SAb는 희석배율 1:16,000배까지 각각 항원-항체 반응이 감지되었으며, 이는 본 연구에서 생산한 부위별 지방 감소 다클론 항체가 지방세포 PMP에 대해 강한 역가를 가진 항체임을 시사한다. 또한 AAb 및 SAb는 타 장기들과는 특이한 반응을 나타내지 않았다. 본 연구에서 개발한 두 항체들은 모두 항원으로 이용된 부위의 지방세포 PMP와 가장 높은 반응을 나타내었으며, 비면역혈청에 비해 유의적으로 높은 세포독성 효과가 있음을 확인할 수 있었다. 이상의 결과를 종합할 때 본 연구에서 개발된 AAb 및 SAb는 높은 역가, 타 장기 안전성 및 in vitro 지방 감소 효과가 있었으며 향후 영양생리 안전성 및 생체 지방 감소 효과 등의 추가 연구가 지속될 경우 저지방 고품질 돈육의 생산이 가능하리라고 판단된다.

Keywords

References

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