One-step Separation of 30K Protein from the Silkworm Hemolymph by Anion-exchange Chromatography and Its Effect on the Proliferation of Human Cells

음이온교환 크로마토그래피를 이용한 누에체액 유래 30K 단백질의 정제와 정제된 단백질이 인간세포 배양 증식에 미치는 영향

  • Shin Hyun-Chong (Department of Biological Engineering and Center for Advanced Bioseparation Technology, Inha University) ;
  • Joung Chan-Hi (Department of Biological Engineering and Center for Advanced Bioseparation Technology, Inha University) ;
  • Choi Yong-Soo (Department of Biological Engineering and Center for Advanced Bioseparation Technology, Inha University) ;
  • Lim Sang-Min (Department of Biological Engineering and Center for Advanced Bioseparation Technology, Inha University) ;
  • Han Kyuboem (Hanson Biotech Co., Ltd.) ;
  • Koo Yoon-Mo (Department of Biological Engineering and Center for Advanced Bioseparation Technology, Inha University) ;
  • Park Tai Hyun (School of Chemical and Biological Engineering, Seoul National University) ;
  • Kim Dong-Il (Department of Biological Engineering and Center for Advanced Bioseparation Technology, Inha University)
  • 신현종 (인하대학교 생물공학과 및 초정밀생물분리기술연구센터) ;
  • 정찬희 (인하대학교 생물공학과 및 초정밀생물분리기술연구센터) ;
  • 최용수 (인하대학교 생물공학과 및 초정밀생물분리기술연구센터) ;
  • 임상민 (인하대학교 생물공학과 및 초정밀생물분리기술연구센터) ;
  • 한규범 ((주)핸슨바이오텍) ;
  • 구윤모 (인하대학교 생물공학과 및 초정밀생물분리기술연구센터) ;
  • 박태현 (서울대학교 화학생물공학부) ;
  • 김동일 (인하대학교 생물공학과 및 초정밀생물분리기술연구센터)
  • Published : 2005.06.01

Abstract

In order to investigate the feasibility of 30K protein from silkworm (Bombyx mori) hemolymph (SH) on the proliferation of human cells, a simple separating procedure by anion-exchange chromatography system with Q-Sepharose fast flow gel was established. The 30K protein was eluted with an optimized condition of 0.16 M sodium chloride in 20 mM tris buffer (pH 9.0). The separated 30K protein at three concentrations of 0.04, 0.12, and 0.4 mg/ml was added to the culture medium with various human cells, such as chondrocytes, periosteum-derived cells, and MRC-5 cells, and their growth rates were measured. The cell growth rate at protein concentration of 0.4 mg/ml was always higher than that without 30K protein in all human cells tested, suggesting that the 30K protein has positive effect on the increase of the life span of human cells.

누에체액 성분 중의 30K 단백질은 Q-Sepharose FF를 이용한 단계별 농도구배 이온교환 크로마토그래피로 0.16 M NaCl 용출 조건에서 쉽게 얻을 수 있었다. 얻어진 단백질을 인간유래 정상세포에 처리하여 세포 증식 향상이 확인되었고, 이는 30K 단백질이 인간을 위한 세포치료제에 이용되는 세포의 증식을 위한 첨가물로 사용될 수 있음으로써 의료 분야에의 적용 가능성을 확인하였다. 또한 본 연구를 통해 확립된 30K 단백질의 간단한 정제 공정은 향후 대량 생산 공정으로 scale-up이 용이하게 이루어질 것으로 기대된다. 이 결과들은 동물세포를 생산 숙주로 사용할 때 생산 물질 자체의 생산량 증대에도 효과적으로 이용될 수 있으며 세포치료제를 위한 세포의 증식에도 효과를 보일 수 있으므로 세포배양을 이용한 생산 공정 전반에 큰 영향을 미칠 수 있을 것이다.

Keywords

References

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