Abstract:
A goat zygote (I) which comprises a nucleic acid construct containing a nucleotide sequence of a goat beta -casein promoter and a nucleic acid sequence encoding human granulocyte-colony stimulating factor (hG-CSF). Independent claims are also included for the following: (1) a method for preparing (I), comprising microinjecting a nucleic acid construct containing a nucleotide sequence of a goat beta-casein promoter and a nucleotide sequence encoding hG-CSF into an intact goat zygote; (2) a method (M1) for preparing an intact goat zygote, comprising synchronizing a female goat, superovulating the female goat, mating the superovulated female goat with a male goat and recovering a zygote from the mated female goat, characterized in that the synchronizing step is conducted by administering norgestomet and estradiol to the female goat, inserting an implant containing norgestomet to the female goat and removing the implant, and the superovulating step is conducted by administering to the female goat, sequentially at predetermined time intervals, a combined dose of pregnant mare serum gonadotropin (PMSG) and follicle stimulating hormone (FSH), divided doses of FSH, and a combined dose of FSH and human chorionic gonadotropin (hCG); (3) a transgenic goat producing milk containing hG-CSF, which is developed from (I); (4) a process for preparing the transgenic goat of (3) into a female goat and allowing the goat zygote to develop to term; (5) a method for producing hG-CSF, comprising producing milk from the transgenic goat of (3) and recovering the hG-CSF from the milk; and (6) a milk composition comprising hG-CSF, which is produced from the transgenic goat of (3); (7) hG-CSF produced by the method of (5). - ACTIVITY : None given. No biological data given. - MECHANISM OF ACTION : Human granulocyte-colony stimulating factor. No biological data given.
Abstract:
PURPOSE: A fertilized egg introduced by an expression cassette containing a human granulocyte-colony stimulating factor (hG-CSF) under a Gapra hircus aegagrus β-casein promoter, Gapra hircus aegagrus generated from the fertilized egg and a process for producing the hG-CSF are provided. Therefore, the hG-CSF can be used for prevention and treatment of a disease such as bone marrow transfusion, malignant lymphoid tumor, acute leukemia, lung cancer, ovarian cancer, anemia or the like. CONSTITUTION: The fertilized egg(KCTC-0718BP) is prepared by microinjection of pGbc-hGCSF as an expression cassette containing a human granulocyte-colony stimulating factor (hG-CSF) under a Gapra hircus aegagrus β-casein promoter to the male pronucleus of a fertilized egg of Gapra hircus aegagrus. Also the Gapra hircus aegagrus is prepared by transplanting the fertilized egg to an oviduct of Gapra hircus aegagrus as a surrogate mother and generating.
Abstract:
본 발명은 형질전환 동물의 젖으로부터 재조합 펩타이드 또는 단백질을 정제하는 방법에 관한 것으로, a) 재조합 펩타이드 또는 단백질을 포함하는 젖을 분비하도록 형질전환된 동물의 젖을 1차 원심분리한 후, 분리된 상층액에 유지방 및 지질을 흡착할 수 있는 비드를 가하고 2차 원심분리하여 상층액인 조단백질 분획을 획득하는 단계, b) 조단백질 분획의 pH를 4.0 에서 6.0 범위로 조절하여 재조합 펩타이드 또는 단백질을 가용화된 상태로 유지하는 단계, 및 c) pH가 조절된 조단백질 분획으로 연속적인 컬럼 크로마토그라피를 실시하여 순수하게 정제된 재조합 펩타이드 또는 단백질을 얻는 단계를 포함하는 본 발명의 방법을 사용하면 간단하고 효율적으로 재조합 펩타이드 또는 단백질을 정제할 수 있다.
Abstract:
(a) preparing lipase producing recombinant plasmid pJH92 with use of lipase coding DNA sequence-contg. gener fragment dirived from Pseudomonas fluorescens; (b) separating the DNA fragment contg. lipse gene from pJH92; (c) inserting the DNA fragment into tac promotor-contg. high expression plasmid pTTQ19 to obtain the plasmid pTTY2; (d) transforming the pTTY2 into E. coli and culturing; and (e) extracting and separating the lipase inculusion body from the E. coli culture, and refolding. E. coli BL21 contg. high expression plasmid pTTY2 is prepd. and heat resistant lipase can be produced with high yield by industrialmass prodn..
Abstract:
PURPOSE: A process for purifying a recombinant peptide or protein from the milk of a transformed animal is provided, thereby easily removing an excess of milk fat and lipid. CONSTITUTION: A process for purifying a recombinant peptide or protein from the milk of a transformed animal comprises the steps of: (a) centrifuging the milk from a transformed animal that produces recombinant peptide or protein-containing milk, adding milk fat and lipid absorbing beads into the supernatant, and centrifuging the supernatant to obtain a crude protein fraction from the supernatant; (b) regulating the hydrogen concentration of the crude protein fraction to pH 4.0 to 6.0 to keep recombinant peptide or protein soluble; and subjecting the pH regulated crude protein fraction to continuous column chromatography, wherein the bead is Sephadex LH 20; the column chromatography step is carried out by subjecting the crude protein fraction to hydrophobic column chromatography, anion exchange chromatography and gel filtration chromatography, sequentially; the hydrophobic column is phenyl sepharose column; anion exchange column is DEAE sepharose; gel filtration column is Superdex; and the recombinant protein is hG-CSF.
Abstract:
본 발명은 한국산 재래종 산양의 베타카제인 유전자의 프로모터 부위를 이용하여 유선조직 특이적인 발현시스템을 구축하여, 이를 통해 생리활성물질을 생산하는 방법에 관한 것이다. 좀더 자세하게는 유선조직에서만 특이적으로 발현되는 베타카제인 유전자의 발현조절부위를 분리하여, 이를 생리활성물질 유전자 및 전사종결조절부위와 재조합함으로써 인체내에서 생리적 활성을 보이는 물질을 유선조직 관련 세포주 및 동물의 유선조직에서 발현시키는 방법 및 새로운 재조합 백터 pGbc, p Gbc-L 및 pGbc-S(1997. 3. 13 KCTC 8790P, 8791P, 8792P)에 관한 것이다. 한국산 재래종 산양의 베타카제인 유전자의 프로모터를 이용하여 만든 pGbc_S, pGbc_L 및 pGbc를 이용하여 사람의 과식구콜로니 자극인자(human Granulocyte Colony Stimulating Factor) 및 사람의 과식구 대식세포 콜로니 자극인자(human Granulocyte Macrophage Colony Stimulating Factor)를 생쥐 유선조직으로부터 유래한 HC11 cell 및 형질전환생쥐의 유즙으로부터 발현시켰다. 이러한 유선조직 특이적 발현시스템의 발명으로 기존의 생산방법의 문제점인 생리활성물질의 활성유지, 높은 생산단가, scale-up, 안정성의 문제들을 해결하였다.
Abstract:
본 발명은 호염기성 단백질 분해효소 및 지방질 분해효소를 생산하는 신규한 슈도모나스 에스피.(Pseudomonas sp.) 균주, 이로부터 생산되는 호염기성 단백질 분해 효소 및 상기 균주를 이용하여 호염기성 단백질 분해효소를 제조하는 방법을 제공한다.