The transfection of plasmids into mammalian cells directly incorporates genetic material into the genome to form a stable transfection. Stable transfection is used to create cell populations that will continue to express the genetic characteristics of the foreign material and then pass it on to the offspring. In order to achieve stable transfection, there should be selective pressure to force cells to integrate plasmid DNA into the genome.
Reporter genes are usually used to easily monitor the transfection efficiency and expression levels in cells. Synbio Technologies provides a variety of reporter gene expression vectors to meet the screening needs of different cell lines and efficiently screen expression according to cell-specific screening conditions.
Fluorescent Proteins, Promoters, and Selectable Markers Selection
Different promoters have different activation activities in different cells. For example, in hematopoietic stem cells, SFFV has much better activation activity than CMV. There are also differences in tissue-specific expression. AAT is highly expressed in liver tissues and weakly expressed in other tissues. hSyn is highly expressed in nerve cells and weakly expressed in other tissues. Synbio Technologies provide a variety of fluorescent proteins, promoters, and mammalian expression vectors with selectable markers to meet the needs of cell-specific screening.
Schematic diagram of mammalian cell expression vector
Selectable markers in mammalian cells work similarly to that in bacteria.
A table of the most commonly used selectable markers are listed below:
Name |
Gene Conferring Resistance |
Cell Types |
Mode of Action |
Blasticidin |
bsd |
HEK293, CHO, HeLa, COS-1NIH3T3 |
Inhibits termination step of translation |
G418/Geneticin |
neo |
HEK293, CHO,HeLa, NIH3T3, Jurkat T cells |
Blocks polypeptide synthesis at 80S; inhibits chain elongation |
Hygromycin B |
hygB |
CHO, HeLa, NIH3T3, Jurkat T cells |
Blocks polypeptide synthesis at 80S; inhibits chain elongation |
Puromycin |
pac |
HEK293, HeLa, Jurkat T cells |
Inhibits protein synthesis; premature chain termination |
Zeocin |
Shbla |
HEK293, CHO, HeLa, NIH3T3, COS-1, Jurkat T cells |
Complexes with DNA; causes strand scissions |
The promoters of mammalian expression vectors also have different applicable objects.
The most commonly used promoters are listed below:
Promoter |
Primarily used for |
RNA Transcript |
Description |
CMV |
General expression |
mRNA |
Strong mammalian expression promoter from the human cytomegalovirus |
EF1a |
General expression |
mRNA |
Strong mammalian expression from human elongation factor 1 alpha |
SV40 |
General expression |
mRNA |
Mammalian expression promoter from the simian vacuolating virus 40 |
PGK1 (human or mouse) |
General expression |
mRNA |
Mammalian promoter from the phosphoglycerate kinase gene |
Ubc |
General expression |
mRNA |
Mammalian promoter from the human ubiquitin C gene |
Human beta actin |
General expression |
mRNA |
Mammalian promoter from the beta actin gene |
CAG |
General expression |
mRNA |
Strong hybrid mammalian promoter |
TRE |
General expression |
mRNA |
Tetracycline response element promoter |
UAS |
General expression |
mRNA |
Drosophila promoter containing Gal4 binding sites |
CaMKIIa |
Gene expression for optogenetics |
mRNA |
Ca2+/calmodulin-dependent protein kinase II promoter |
H1 |
small RNA expression |
shRNA |
From the human polymerase III RNA promoter |
U6 |
small RNA expression |
shRNA |
From the human U6 small nuclear promoter |
* For more information please contact us at quote@synbio-tech.com.
Vector Name |
Vector Map |
Infection Effect |
Description |
pMT1-CMV-Amp-NF-Neomycin |
 |
|
Vector Type: Mammalian Cell Expression Vector Promoter: CMV Promoter Vector Resistance: Ampicillin Screening Marker: Neomycin |
pMT2-CMV-Amp-mCherry-Neomycin |
 |
 |
Vector Type: Mammalian Cell Expression Vector Promoter: CMV Promoter Vector Resistance: Ampicillin Vector Tag: mCherry Screening Marker: Neomycin |
pMT3-CMV-Amp-mCherry-Neomycin-N-Terminal 10xHis-TEV |
 |
 |
Vector Type: Mammalian Cell Expression Vector Promoter: CMV Promoter Vector Resistance: Ampicillin Vector Tags: mCherry Purification Tag: N-10xHis affinity tag-TEV Screening Marker: Neomycin |
pMT4-CMV-Amp-mCherry-Neomycin-C-Terminal 10xHis-TEV |
 |
 |
Vector Type: Mammalian Cell Expression Vector Promoter: CMV Promoter Vector Resistance: Ampicillin Vector Tag: mCherry Purification Tag: C-10xHis affinity tag-TEV Screening Marker: Neomycin |
pMT5-CMV-Amp-GFP-Neomycin-N-Terminal 10xHis-TEV |
 |
 |
Vector Type: Mammalian Cell Expression Vector Promoter: CMV Promoter Vector Resistance: Ampicillin Vector Tag: GFP Purification Tag: N-10xHis affinity tag-TEV Screening Marker: Neomycin |
pMT6-CMV-Amp-GFP-Puromycin-N-Terminal 10xHis-TEV |
 |
 |
Vector Type: Mammalian Cell Expression Vector Promoter: CMV Promoter Vector Resistance: Ampicillin Vector Tag: GFP Purification Tag: N-10xHis affinity tag-TEV Screening Marker: Puromycin |
pMT7-CMV-Amp-GFP-Puromycin-C-Terminal 10xHis-TEV |
 |
 |
Vector Type: Mammalian Cell Expression Vector Promoter: CMV Promoter Vector Resistance: Ampicillin Vector Tag: GFP Purification Tag: C-10xHis affinity tag-TEV Screening Marker: Puromycin |
pMT8-CMV-Amp-YFP-Neomycin-N-Terminal 10xHis-TEV |
 |
 |
Vector Type: Mammalian Cell Expression Vector Promoter: CMV Promoter Vector Resistance: Ampicillin Vector Tag: YFP Purification Tag: C-10xHis affinity tag-TEV Screening Marker: Neomycin |
pMT9-CMV-Amp-YFP-Blasticidin-N-Terminal 10xHis-TEV |
 |
 |
Vector Type: Mammalian Cell Expression Vector Promoter: CMV Promoter Vector Resistance: Ampicillin Vector Tag: YFP Purification Tag: C-10xHis affinity tag-TEV Screening Marker: Blasticidin |
pMT10-CMV-Amp-YFP-Blasticidin-N-Terminal 3xStrepII-TEV. |
 |
 |
Vector Type: Mammalian Cell Expression Vector Promoter: CMV Promoter Vector Resistance: Ampicillin Vector Tag: YFP Purification Tag: N-10xHis affinity tag-TEV Screening Marker: Blasticidin |
pMT11-CMV-Amp-Cerulean-Neomycin-N-Terminal 10xHis-TEV |
 |
 |
Vector Type: Mammalian Cell Expression Vector Promoter: CMV Promoter Vector Resistance: Ampicillin Vector Tag: Cerulean Purification Tag: N-10xHis affinity tag-TEV Screening Marker: Neomycin |
pMT12-CMV-Amp-Cerulean-Zeocin-N-Terminal 10xHis-TEV |
 |
 |
Vector Type: Mammalian Cell Expression Vector Promoter: CMV Promoter Vector Resistance: Ampicillin Vector Tag : Cerulean Purification Tag: N-10xHis affinity tag-TEV Screening Marker: Zeocin |
pMT13-CMV-Amp-Cerulean-Zeocin-N-3xStrepII-tag-TEV |
 |
 |
Vector Type: Mammalian Cell Expression Vector Promoter: CMV Promoter Vector Resistance: Ampicillin Vector Tag: Cerulean Purification Tag: N-3xStrepII tag-TEV Screening Marker: Zeocin |
Vector Name |
Vector Map |
Description |
pMT14-CMV-Kan |
 |
Vector Type: Mammalian Cell Expression Vector
Promoter: CMV Promoter
Vector Resistance: Kan |
pMT15-CMV-Kan-YFP |
 |
Vector Type: Mammalian Cell Expression Vector
Promoter: CMV Promoter
Vector Resistance: Kan
Vector Tag: YFP |
pMT16-CMV-Kan-YFP-Blasticidin |
 |
Vector Type: Mammalian Cell Expression Vector
Promoter: CMV Promoter
Vector Resistance: Kan
Vector Tag: YFP
Screening Marker: Blasticidin |
pMT17-CMV-Kan-mCherry |
 |
Vector Type: Mammalian Cell Expression Vector
Promoter: CMV Promoter
Vector Resistance: Kan
Vector Tag: mCherry |
pMT18-CMV-Kan-smURFP |
 |
Vector Type: Mammalian Cell Expression Vector
Promoter: CMV Promoter
Vector Resistance: Kan
Vector Tag: smURFP |
pMT19-CMV-Kan-smURFP-Hygromycin B |
 |
Vector Type: Mammalian Cell Expression Vector
Promoter: CMV Promoter
Vector Resistance: Kan
Vector Tag: smURFP
Screening Marker: Hygromycin B |
pMT20-CMV-Kan-Cerulean |
 |
Vector Type: Mammalian Cell Expression Vector
Promoter: CMV Promoter
Vector Resistance: Kan
Vector Tag: Cerulean
Screening Marker: Hygromycin B |
pMT21-CMV-Kan-Cerulean-Zeocin |
 |
Vector Type: Mammalian Cell Expression Vector
Promoter: CMV Promoter
Vector Resistance: Kan
Vector Tag: Cerulean
Screening Marker: Zeocin |
Vector Name |
Vector Map |
Description |
pAb20-hCK |
 |
Vector Type: Human Antibody Expression Vector
Promoter: CMV Promoter
Vector Resistance: Ampicillin
Fc Type: hCK |
pAb20-hCL-1 |
 |
Vector Type: Human Antibody Expression Vector
Promoter: CMV Promoter
Vector Resistance: Ampicillin
Fc Type: hCL |
pAb20-hCHIgG1 |
 |
Vector Type: Human Antibody Expression Vector
Promoter: CMV Promoter
Vector Resistance: Ampicillin
Fc Type: hCH IgG1 |
pAb20-hCL-2 |
 |
Vector Type: Human Antibody Expression Vector
Promoter: CMV Promoter
Vector Resistance: Ampicillin
Fc Type: hCL |
pAb20-hCHIgG2 |
 |
Vector Type: Human Antibody Expression Vector
Promoter: CMV Promoter
Vector Resistance: Ampicillin
Fc Type: hCH IgG2 |
pAb20-hCHIgG3 |
 |
Vector Type: Human Antibody Expression Vector
Promoter: CMV Promoter
Vector Resistance: Ampicillin
Fc Type: hCH IgG3 |
pAb20-hCHIgG4 |
 |
Vector Type: Human Antibody Expression Vector
Promoter: CMV Promoter
Vector Resistance: Ampicillin
Fc Type: hCH IgG4 |
pAb20-hCHIgM |
 |
Vector Type: Human Antibody Expression Vector
Promoter: CMV Promoter
Vector Resistance: Ampicillin
Fc Type: hCH IgGM |
Vector Name |
Vector Map |
Description |
pAb20-mCK |
 |
Vector Type: Mouse Antibody Expression Vector Promoter: CMV Promoter Vector Resistance: Ampicillin Fc Type: mCK |
pAb20-mCL-1 |
 |
Vector Type: Mouse Antibody Expression Vector Promoter: CMV Promoter Vector Resistance: Ampicillin Fc Type: mCL |
pAb20-mCL-2 |
 |
Vector Type: Mouse Antibody Expression Vector Promoter: CMV Promoter Vector Resistance: Ampicillin Fc Type: mCL |
pAb20-mCHIgG1 |
 |
Vector Type: Mouse Antibody Expression Vector Promoter: CMV Promoter Vector Resistance: Ampicillin Fc Type: mCH IgG1 |
pAb20-mCHIgG2a |
 |
Vector Type: Mouse Antibody Expression Vector Promoter: CMV Promoter Vector Resistance: Ampicillin Fc Type:mCH IgG2a |
pAb20-mCHIgG2b |
 |
Vector Type: Mouse Antibody Expression Vector Promoter: CMV Promoter Vector Resistance: Ampicillin Fc Type:mCH IgG2b |
pAb20-mCHIgG3 |
 |
Vector Type: Mouse Antibody Expression Vector Promoter: CMV Promoter Vector Resistance: Ampicillin Fc Type:mCH IgG3 |
pAb20-mCHIgM |
 |
Vector Type: Mouse Antibody Expression Vector Promoter: CMV Promoter Vector Resistance: Ampicillin Fc Type:mCHIgM |