Abstract:
본 발명은 배아성 암종 세포를 기본배지 및 혈청을 포함하나 되먹임세포(feeder cell) 및 분화억제제가 첨가되지 않은 배양배지에서 배양하여 배상체를 형성하는 단계 및 상기 형성된 배상체에 혈관내피성장인자(Vascular Endothelial Growth Factor)를 처리하여 혈관내피세포로 분화 유도하는 단계를 포함하는 배아성 암종 세포로부터 혈관내피세포로의 분화유도방법에 관한 것이다. 본 발명에 따르면, 배아성 암종 세포가 혈관내피세포로 분화능이 있음을 혈관내피세포 마커를 사용한 면역염색법, 실시간 중합효소연쇄반응(real-time PCR)에 의한 혈관내피세포 마커들의 정량적 분석, 배양액 조성 및 우태아혈청 첨가 농도에 따른 혈관내피세포로의 분화율 비교, 유세포 분석을 통하여 정량적으로 입증하였으며, 이러한 결과를 토대로 배아성 암종 세포를 혈관내피세포로 분화시켜 혈관내피세포를 대량으로 배양할 수 있다. 배아성 암종 세포는 유전자 도입이 쉽고, 세포 배양이 용이하며, 저비용으로 대량 배양이 가능한 장점을 가지고 있기 때문에 본 발명에 따라 생산된 혈관세포를 이용하여 혈관내피세포로의 분화 기전 연구, 심혈관 및 뇌혈관질환의 치료 연구, 신생혈관 차단에 의한 항암제 개발 연구 등에 유용하게 이용할 수 있다.
Abstract:
A method for isolating a mesenchymal stem cell which is derived from a bone marrow is provided to isolate the mesenchymal stem cell of high purity using an isolation marker, Sca-1, and improve the cell therapy by differentiating to a cardiac myocyte, adipocyte, and osteocyte. A method for isolating a mesenchymal stem cell derived from a bone marrow comprises: a step of isolating a myelocyte from the bone marrow and attaching-culturing in a culture container; a step of treating a trypsin/ethylenediaminetetraacetic acid(EDTA) solution into the myelocyte and attaching-culturing a myelocyte isolated by the trypsin/EDTA solution in another culture container; a step of reacting with a linker-conjugated Sca-1 antibody; a step of treating with an anti-linker magnetic bead; and a step of separating the myelocyte which is bonded with the anti-linker magnetic bead using a magnet-activated column.
Abstract:
A recombinant expression vector for monitoring the differentiation of stem cell to a cardiomyogenic cell is provided to detect the differentiation and use for cell therapy of cardiovascular disease and stability and efficiency of stem cell therapy. A recombinant expression vector pDsRed-Express-1/mMLC, pDsRed-Express-1/rMLC, pEGFP-1/cTn-1, or pDsRed-Express-1/cTn-1 for monitoring the differentiation to a cardiomyogenic cell comprises a promoter inducing the cardiomyogenic cell-specific expression and reporter gene which is operably linked. The promoter inducing the cardiomyogenic cell-specific expression is the promoter myosin light chain 2v promoter of the sequence number 1(SEQ ID NO:1), rat myosin light chain 2v promoter of the sequence number 2, or myocardial troponin I promoter of the sequence number 3. A method for monitoring the differentiation to cardiomyogenic cell comprises: a step of preparing a mesenchymal stem cell; a step of transducing the recombinant expression vector into a prepared stem cell; and a step of confirming the expression of reporter gene in the transduced stem cell.
Abstract:
A recombinant expression vector for monitoring the differentiation of a cardiomyogenic cell and endothelial cell is provided to detect the cell differentiation after cell therapy and verify the stability. A recombinant expression vector pMLC-2v-DsRed-Flk-1-EGFP or pMLC-2v-DsRed-Tie-2-EGFP for monitoring the differentiation of a cardiomyogenic cell and endothelial cell comprises a promoter which induces the cardiomyogenic cell-specific expression; a first reporter gene which is connected to be operatable; a promoter which induces the endothelial cell-specific expression; and a second reporter gene which is connected to be operatable. The promoter which induces cardiomyogenic cell-specific expression is the myosin light chain 2v promoter of the sequence number 1(SEQ ID NO:1), rat myosin light chain 2v promoter of the sequence number 2, or myocardium troponin I promoter of the sequence number 3. The endothelial cell-specific promoter is the Flk-1 promoter of the sequence number 4 and Tie-2 promoter of the sequence number 5. A method for monitoring the differentiation of cardiomyogenic cell and endothelial cell at once: a step of preparing a mesenchymal stem cell; a step of inducing the recombinant expression vector for monitoring the differentiation of cardiomyogenic cell and endothelial cell into the mesenchymal stem cell; and a step of confirming the expression of reporter gene in a transformed mesenchymal stem cell.