大侠不敢当。 我用的vectors主要是两种,一种是MSCV-IRES-Thy1.1 (pMIT),一种是pQCXIN (from Clontech, but with EF1a promoter inserted downstream of the packaging sequence.The pMIT vector is already good enough for T cell expression based on my own experience. But the expression with the vectors with EF1a promoter is more consistent among cells in different differentiated status. I use Phoenix cell line http://www.stanford.edu/group/nolan/retroviral_systems/phx.html for packaging, and found helper plasmid DNA can increase transduction efficiency for several folds. You may also find this webpage useful: http://systembio.com/lentiviral-technology/expression-vectors/cdna/overview
【在 d****d 的大作中提到】 : 大侠不敢当。 : 我用的vectors主要是两种,一种是MSCV-IRES-Thy1.1 (pMIT),一种是pQCXIN (from : Clontech, but with EF1a promoter inserted downstream of the packaging : sequence.The pMIT vector is already good enough for T cell expression based : on my own experience. But the expression with the vectors with EF1a promoter : is more consistent among cells in different differentiated status. I use : Phoenix cell line http://www.stanford.edu/group/nolan/retroviral_systems/phx.html for packaging, and found helper plasmid DNA can increase transduction efficiency for several folds. : You may also find this webpage useful: http://systembio.com/lentiviral-technology/expression-vectors/cdna/overview
d*d
20 楼
Oh, I replaced the CMV promoter in pQCXIN with the EF1a promoter by myself. If you check the systembio website, you may find they already have something similar.
【在 d****d 的大作中提到】 : Oh, I replaced the CMV promoter in pQCXIN with the EF1a promoter by myself. : If you check the systembio website, you may find they already have something : similar.
d*d
22 楼
I have not used lentiviral vector before, so I cannot comment on that. But as I said, I can get over 90% transduction efficiency using the pMSCV vector to express just one cDNA. When I use 2A strategy to express two or three cDNAs, then I can get 50% transduction efficiency, which should be acceptable for many applications.
再请教一下,从哪里order MSCV-IRES-Thy1.1?我查了一下addgene有MSCV-IRES-Thy1. 1 DEST for gateway cloning,不过是attB site,觉得比较奇怪。attB site是不能和 pEntr vector recombination的
based promoter
【在 d****d 的大作中提到】 : 大侠不敢当。 : 我用的vectors主要是两种,一种是MSCV-IRES-Thy1.1 (pMIT),一种是pQCXIN (from : Clontech, but with EF1a promoter inserted downstream of the packaging : sequence.The pMIT vector is already good enough for T cell expression based : on my own experience. But the expression with the vectors with EF1a promoter : is more consistent among cells in different differentiated status. I use : Phoenix cell line http://www.stanford.edu/group/nolan/retroviral_systems/phx.html for packaging, and found helper plasmid DNA can increase transduction efficiency for several folds. : You may also find this webpage useful: http://systembio.com/lentiviral-technology/expression-vectors/cdna/overview
d*d
25 楼
I got it from another lab in the same university. The one I got is probably of the original version, with no attB site.
Thy1.
【在 m*****u 的大作中提到】 : 再请教一下,从哪里order MSCV-IRES-Thy1.1?我查了一下addgene有MSCV-IRES-Thy1. : 1 DEST for gateway cloning,不过是attB site,觉得比较奇怪。attB site是不能和 : pEntr vector recombination的 : : based : promoter
大侠不敢当。 我用的vectors主要是两种,一种是MSCV-IRES-Thy1.1 (pMIT),一种是pQCXIN (from Clontech, but with EF1a promoter inserted downstream of the packaging sequence.The pMIT vector is already good enough for T cell expression based on my own experience. But the expression with the vectors with EF1a promoter is more consistent among cells in different differentiated status. I use Phoenix cell line http://www.stanford.edu/group/nolan/retroviral_systems/phx.html for packaging, and found helper plasmid DNA can increase transduction efficiency for several folds. You may also find this webpage useful: http://systembio.com/lentiviral-technology/expression-vectors/cdna/overview
【在 d****d 的大作中提到】 : 大侠不敢当。 : 我用的vectors主要是两种,一种是MSCV-IRES-Thy1.1 (pMIT),一种是pQCXIN (from : Clontech, but with EF1a promoter inserted downstream of the packaging : sequence.The pMIT vector is already good enough for T cell expression based : on my own experience. But the expression with the vectors with EF1a promoter : is more consistent among cells in different differentiated status. I use : Phoenix cell line http://www.stanford.edu/group/nolan/retroviral_systems/phx.html for packaging, and found helper plasmid DNA can increase transduction efficiency for several folds. : You may also find this webpage useful: http://systembio.com/lentiviral-technology/expression-vectors/cdna/overview
d*d
39 楼
Oh, I replaced the CMV promoter in pQCXIN with the EF1a promoter by myself. If you check the systembio website, you may find they already have something similar.
【在 d****d 的大作中提到】 : Oh, I replaced the CMV promoter in pQCXIN with the EF1a promoter by myself. : If you check the systembio website, you may find they already have something : similar.
d*d
41 楼
I have not used lentiviral vector before, so I cannot comment on that. But as I said, I can get over 90% transduction efficiency using the pMSCV vector to express just one cDNA. When I use 2A strategy to express two or three cDNAs, then I can get 50% transduction efficiency, which should be acceptable for many applications.
再请教一下,从哪里order MSCV-IRES-Thy1.1?我查了一下addgene有MSCV-IRES-Thy1. 1 DEST for gateway cloning,不过是attB site,觉得比较奇怪。attB site是不能和 pEntr vector recombination的
based promoter
【在 d****d 的大作中提到】 : 大侠不敢当。 : 我用的vectors主要是两种,一种是MSCV-IRES-Thy1.1 (pMIT),一种是pQCXIN (from : Clontech, but with EF1a promoter inserted downstream of the packaging : sequence.The pMIT vector is already good enough for T cell expression based : on my own experience. But the expression with the vectors with EF1a promoter : is more consistent among cells in different differentiated status. I use : Phoenix cell line http://www.stanford.edu/group/nolan/retroviral_systems/phx.html for packaging, and found helper plasmid DNA can increase transduction efficiency for several folds. : You may also find this webpage useful: http://systembio.com/lentiviral-technology/expression-vectors/cdna/overview
d*d
44 楼
I got it from another lab in the same university. The one I got is probably of the original version, with no attB site.
Thy1.
【在 m*****u 的大作中提到】 : 再请教一下,从哪里order MSCV-IRES-Thy1.1?我查了一下addgene有MSCV-IRES-Thy1. : 1 DEST for gateway cloning,不过是attB site,觉得比较奇怪。attB site是不能和 : pEntr vector recombination的 : : based : promoter
x*8
45 楼
LZ对中国人特别仇视, 大家不要回答他
【在 m*****u 的大作中提到】 : 再请教一下,从哪里order MSCV-IRES-Thy1.1?我查了一下addgene有MSCV-IRES-Thy1. : 1 DEST for gateway cloning,不过是attB site,觉得比较奇怪。attB site是不能和 : pEntr vector recombination的 : : based : promoter