Abstract:
PURPOSE: A cell line which is transformed by a human BMP2/7-PTD expression vector for promoting osteogenesis in human, and a three dimensional cell culture method using the transformed cell line are provided to remarkably reduce BMP protein use, and to effectively create artificial bones by constructing a high quality BMP production system. CONSTITUTION: A human osteogenesis expression vector, pCEP4-rhBMP2/7-PTD, contains a BMP2 gene, a BMP7 gene, and a protein transduction domain(PTD). A method for preparing the expression vector comprises a step of inserting the BMP2 gene into a pCEP4 vector with a CMV promoter, and inserting the BMP7 gene and the PTD. A transformed cell line contains the expression vector.
Abstract:
PURPOSE: A promoter of a hemocyte-specific expression gene and a promoter active region are provided to obtain a recombinant protein and to save cost and time for developing a silk worm transformant which produces the recombinant protein. CONSTITUTION: A promoter of a hemocyte-specific expression gene is isolated from silk worm and is denoted by sequence number 1. The sequence of sequence number 1 has 579 bp. A promoter active region of the gene contains the promoter of hemocyte-specific expression gene. A method for transforming a silk worm comprises a step of using the promoter. A silk worm transformant is prepared using the promoter and produces recombinant protein.
Abstract:
PURPOSE: A promoter of silkworm embryonic stage-specific expression gene and an active region of the gene are provided to early determine transformation. CONSTITUTION: A silkworm embryonic stage-specific expression promoter is isolated from a silkworm and is denoted by sequence number 1. The promoter is denoted by sequence number 2 and is formed by deleting 268bp at sequence number 1. A maximum promoter active region of a silkworm embryonic stage-specific expression gene contains the promoter. A method for preparing the promoter comprises: a step of screening early embryo gene(EEG) through isolation of genetic resources with respect to time using Bombyx mori eggs and acquiring cDNA clone; a step of analyzing the characteristic and structure of total base sequence and predicted promoter region with respect to the clone of EEG-704 cDNA gene; a step of preparing deletion mutant constructs of 11 kinds of genes with respect to the promoter of EEG704 gene; a step of transducing each deletion mutant construct to pGL3-Basic carrier which do not has the promoter containing luciferase; a step of detecting luciferase activity with respect 11 kinds of deletion mutant constructs; and a step of comparing and analyzing luciferase activity with respect to p704A(1.4kb) and actin which have the strongest luciferase activity.
Abstract:
본 발명은 아가로스를 이용한 다공성 3차원 지지체의 제조방법 및 이를 통해 제조된 다공성 3차원 지지체에 관한 것이다. 본 발명의 다공성 3차원 지지체의 제조방법은 공극 유도 물질인 아가로스를 준비한 후, 이를 액체 상태로 하이드로 겔화하여 아가로스 겔을 제조한 후, 이를 지지체를 형성하는 생체재료의 주원료와 함께 성형틀에 주입하여 가압성형하는 단계와 상기 성형물을 급속 냉각한 후, 동결건조시킨 다음 이를 에탄올로 고정시킨 후, 50℃ 이상의 물에 담구어 아가로스를 제거함으로써 다공성 및 통기성이 형성된 3차원 지지체를 제조하는 단계를 포함하여 구성된다. 본 발명에 의해, 지지체 내부에 공극뿐 아니라 공극 간의 연결 통로가 형성되도록 한 다공성 3차원 지지체의 제조방법이 제공되며, 지지체 표면에 부착한 조직의 세포가 지지체 내부로 침투하는 효과를 증대시킬 수 있게 되어 재생의 효율을 증대시킬 수 있는 다공성 3차원 지지체가 제공된다.
Abstract:
PURPOSE: A method for preparing a large amount of papiliocin using recombinant E.coli is provided to ensure high antibacterial activity against various bacteria. CONSTITUTION: A recombinant expression vector pET-KSI/papiliocin contains papiliocin gene. The gene is derived from Papilio xuthus larva. The E.coli BL21(DE3) is prepared by transforming by papiliocin gene-containing recombinant expression vector pET-KSI/Papiliocin. A method for preparing a large amount of recombinant papiliocin comprises: a step of preparing transformed recombinant E.coli; a step of culturing the transformed E.coli to express insoluble recombinant fusion protein; and a step of collecting papiliocin. A pharmaceutical composition for antibiotics contains the recombinant papiliocin as an active ingredient.
Abstract:
PURPOSE: A novel antibacterial peptide gene and antibacterial peptide isolated from Papilio xuthus larva are provided to ensure antibacterial activity against fungi causing candidiasis. CONSTITUTION: An antibacterial peptide gene isolated from Papilio xuthus larva has a base sequence of sequence number 1. An antibacterial peptide encoded by the gene of sequence number 1 has an amino acid sequence of sequence number 2. A pharmaceutical composition contains the antibacterial peptide of sequence number 2 or 3 as an active ingredient.
Abstract:
본 발명은 사료첨가제 100 중량부에 대하여 항균 펩타이드가 강화된 누에를 1 내지 50 중량부로 포함하는 항균 펩타이드가 강화된 누에를 포함하는 면역 증진용 사료첨가제 및 이의 제조방법에 관한 것이다. 본 발명의 사료첨가제를 가축에 급여함으로써, 가축의 생산성 향상, 건강 유지, 장내 유해균 억제, 면역 조절 및 축산물의 품질 향상이 가능하다. 또한 본 발명의 사료첨가제는 성장촉진용 항생제와 비교할 때 대등하거나 우수한 결과를 보임으로 사료에 첨가되는 천연의 신규 항생제 대체물질로서의 사용이 가능하다.