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국회도서관 홈으로 정보검색 소장정보 검색

초록보기

Mouse thymosin β-4 (TB4) 유전자를 Escherichia coli에서 intein-tag 융합 단백질로 발현시키고 정제하였다. 재조합 TB4-intein 융합 단백질의 분자량을 10% glycine SDS-PAGE로 확인한 결과, 세포내 soluble 분획에서 60 kDa의 단백질을 얻을 수 있었고, 유도발현 최적 조건은 0.1 mM IPTG, 25℃에서 3시간 동안 유도 발현할 때가 최적임을 확인하였다. TB4 만을 얻기 위해서 유도발현된 TB4-intein을 DTT를 이용해 self-cleavage를 일으킨 다음, chitin bead를 이용한 친화성 크로마토그라피로 정제 후 분자량을 확인 한 결과, 5 kDa으로 확인되었으며, 순도는 95% 이상 이었다. 정제한 recombinant TB4가 생물학적 기능을 보유하고 있는지 확인을 하기 위하여, TB4를 농도 별(1~1,000 ng/ml)로 하여 HT1080 cell을 이용한 cell migration을 측정한 결과, 모든 농도에서 recombinant TB4가 화학합성한 TB4 보다 약 20% 이상 높은 활성을 보였으며, recombinant TB4 1 ng/ml의 농도에서 cell migration 활성이 가장 높게 나타났다. Recombinant TB4를 마우스 상처 부위에 5일 동안 매일 처리한 결과(최종 처리 농도 0.5 mg/ml), 화학합성 TB4 보다 recombinant TB4의 상처치유 활성이 약 35% 더 높음을 알 수 있었다. 이상의 결과는 recombinant TB4가 화학합성 TB4보다 cell migration과 상처치유에 훨씬 높은 활성을 나타냄을 보여주고 있다.

Thymosin β-4 (TB4) is a small peptide composed of 43 amino acids. To obtain sufficient biologically active mouse TB4 economically, we cloned and overexpressed this gene in an Escherichia coli system. With the isopropyl β-D-1-thiogalactopyranoside induction of the E. coli transformant, TB4 fusion protein with intein- and chitin-binding domain was successfully expressed in the soluble fraction within the E. coli cell. The TB4-intein–chitin-binding domain fusion protein was purified from the soluble fraction of E. coli cell lysate. The affinity chromatography with chitin beads and dithiothreitol-mediated intein self-cleavage reaction releases the TB4 peptide into the stripping solution. Sodium dodecyl sulphate–polyacrylamide gel electrophoresis and Western blot analyses were used to confirm that the recombinant TB4 peptide was produced with the expected size of 5 kDa. We found that the recombinant TB4 stimulated cell migration in the transwell plate chamber assay. After 18 hr of the treatment of the recombinant TB4 with 1 ng/ml concentration, the migration of the HT1080 cell was increased by 20% compared with that of the chemically synthesized TB4. The recombinant TB4 was also observed to promote the healing of a wound area in C57BL/6 mice by as high as 35% compared with that of the chemically synthesized TB4. These results suggest that the recombinant TB4 has better biological activity for cell migration and wound healing than that of the chemically synthesized TB4 peptide.

권호기사

권호기사 목록 테이블로 기사명, 저자명, 페이지, 원문, 기사목차 순으로 되어있습니다.
기사명 저자명 페이지 원문 목차
Efficacy verification of four hangover cure products for reducing blood alcohol and acetaldehyde concentrations in sprague-dawley rats = 국내 시판 숙취해소제 4종의 혈중 알코올 및 아세탈데히드 농도 감소 효능 비교 Min Ji Han, Yu Jung Jin, Se-Young Choung p. 79-85

Facilitation of glucose uptake by lupeol through the activation of the PI3K/AKT and AMPK dependent pathways in 3T3-L1 adipocytes = 3T3-L1 지방세포에서 PI3K/AKT 및 AMPK 경로의 활성화를 통한 루페올의 포도당 흡수촉진 효과 Hyun-Ah Lee, Ji-Sook Han p. 86-93

Core promoter mutation of ntC1731T and G1806A of hepatitis B virus increases HBV gene expression = B형 간염 바이러스의 ntC1731T 및 G1806A의 core 프로모터 돌연변이에 의한 HBV 유전자 발현 증가 분석 Ja Young Cho, Yi Yi Kyaw, Mi So Seong, JaeHun Cheong p. 94-100

New functional properties of passion fruit extract on skin = 패션 프룻 추출물이 피부에 미치는 새로운 기능적 효과 Mi Suk Jeong, Soon-Rae Kim, Chang Woo Han, Hyeon Jin Kim, Se Bok Jang p. 101-107

Increase in neurogenesis of neural stem cells cultured from postnatal mouse subventricular zone by nifedipine = L-type 칼슘 채널을 저해하는 저해제, nifedipine에 의한 쥐 뇌실하 영역 신경줄기세포의 신경세포로의 분화 촉진 Ki-Youb Park, Man Su Kim p. 108-118

초산균 Acetobacter pasteurianus CK-1의 분리 및 발효 특성 = Isolation of an acetic acid bacterium acetobacter pasteurianus CK-1 and its fermentation characteristics 방규호, 김채원, 김철호 p. 119-124

JAK/STAT 신호전달 경로를 통한 LPS 유도 RAW 264.7 세포의 염증에 대한 노니의 항염증 효과 = Anti-inflammatory effect of morinda citrifolia on lps-induced inflammation in raw 264.7 cells through the JAK/STAT signaling pathway 조범길, 방인석 p. 125-134

재조합 Thymosin β-4의 세포이동능과 상처치유능 = Cell migration and wound healing activities of recombinant thymosin β-4 expressed in escherichia coli 홍교창, 최영현, 김군도, 차희재, 전숭종, 남수완 p. 135-141

THP-1 세포에서 거품세포 형성과 단핵구 분화 및 활성화에서 7-ketocholesterol의 역할 = Suppression of PMA-induced differentiation via foam cell formation in THP-1 cells by 7-ketocholesterol 이미선, 박시은, 김관회, 박영철 p. 142-147

다양한 ECM 조건하에서의 세포막 미세영역 부위 국소접착인산화효소 활성의 단일세포 이미징 기반 분석 = Single-cell-imaging-based analysis of focal adhesion kinase activity in plasma membrane microdomains under a diverse composition of extracellular matrix proteins 최규호, 장윤관, 서정수, 김헌수, 안상현, 한기석, 김은혜, 김태진 p. 148-154

케나프 장대 품종의 부위별 에탄올 추출물의 항혈전 및 항산화 활성 = Evaluation of antithrombosis and antioxidant activities of the ethanol extract of different parts of Hibiscus cannabinus L. cv. 'Jangdae' 강덕경, 이윤진, 김영민, 손호용 p. 155-160

Delay in the cell cycle by a single unattached kinetochore = 방추사와 연결되지 않은 단 하나의 키네토코어가 세포분열의 속도를 늦추는 기전 Taekyung Kim p. 161-166

정금나무의 기능성 생리활성 물질과 생리활성 = Functional bioactive compounds and biological activities of Vaccinium oldhamii 채정우, 조희선 p. 167-174

혈관과 섬유증의 평활근 및 세포외기질 조절에 대한 릴랙신의 다양한 작용기전 = Diverse mechanisms of relaxin's action in the regulation of smooth muscles and extracellular matrix of vasculature and fibrosis 민계식 p. 175-188

참고문헌 (31건) : 자료제공( 네이버학술정보 )

참고문헌 목록에 대한 테이블로 번호, 참고문헌, 국회도서관 소장유무로 구성되어 있습니다.
번호 참고문헌 국회도서관 소장유무
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25 Sosne, G. 2018. Thymosin beta 4 and the eye: the journey from bench to bedside. Expert Opin. Biol. Ther. 18, 99-104. 미소장
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28 Wang, X., Yang, G., Li, S., Gao, M., Zhao, P. and Zhao, L. 2013. The Escherichia coli-derived thymosin β4 concatemer promotes cell proliferation and healing wound in mice. Biomed. Res. Int. 2013, Article ID 241721. 미소장
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30 Yu, R., Cao, S., Liu, Y., Si, X., Fang, T., Sun, X., Dai, H., Xu, J., Fang, H. and Chen, W. 2018. Highly effective biosynthesis of N-acetylated human thymosin β4 (Tβ4) in Escherichia coli. Artif. Cells Nanomed. Biotechnol. 46, S95-S104. 미소장
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