Paul.xu at 15:14, 13 August 2012

2012-08-13T15:14:45Z

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T75 293FT in serum free medium 

Transfect 

grow in 35 ml serum free medium spinner flask 

 

Valproic acid (VPA), 1.25mM to 3.75mM can be used to increase IgG r-protein production in HEK293E cells. Increase 12 fold 

'''NTC8685 sequence''' 

gctagcaccgttggtttccgtagtgtagtggttatcacgttcgcctaacacgcgaaaggtccccggttcgaaaccgggcactacaaaccaacaacgttaaaaaacaggtcctccccatactctttcattgtacacaccgcaagctcgacaatcatcggattgaagcattgtcgcacacatcttccacacaggatcagtacctgctttcgcttttaaccaaggcttttctccaagggatatttatagtctcaaaacacacaattactttacagttagggtgagtttccttttgtgctgttttttaaaataataatttagtatttgtatctcttatagaaatccaagcctatcatgtaaaatgtagctagtattaaaaagaacagattatctgtcttttatcgcacattaagcctctatagttactaggaaatattatatgcaaattaaccggggcaggggagtagccgagcttctcccacaagtctgtgcgagggggccggcgcgggcctagagatggcggcgtcggatcggccagcccgcctaatgagcgggcttttttttcttagggtgcaaaaggagagcctgtaagcgggcactcttccgtggtctggtggataaattcgcaagggtatcatggcggacgaccggggttcgagccccgtatccggccgtccgccgtgatccatgcggttaccgcccgcgtgtcgaacccaggtgtgcgacgtcagacaacgggggagtgctccttttggcttccttcccctaccggtctgcctcgcgcgtttcggtgatgacggtgaaaacctctgacacatgcagctcccggagacggtcacagcttgtctgtaagcggatgccgggagcagacaagcccgtcagggcgcgtcagcgggtgttggcgggtgtcggggcgcagccatgacccagtcacgtagcgatagcggagtgtatactggcttaactatgcggcatcagagcagattgtactgagagtgcaccatatgcggtgtgaaataccgcacagatgcgtaaggagaaaataccgcatcaggcgctcttccgcttcctcgctcactgactcgctgcgctcggtcgttcggctgcggcgagcggtatcagctcactcaaaggcggtaatacggttatccacagaatcaggggataacgcaggaaagaacatgtgagcaaaaggccagcaaaaggccaggaaccgtaaaaaggccgcgttgctggcgtttttccataggctccgcccccctgacgagcatcacaaaaatcgacgctcaagtcagaggtggcgaaacccgacaggactataaagataccaggcgtttccccctggaagctccctcgtgcgctctcctgttccgaccctgccgcttaccggatacctgtccgcctttctcccttcgggaagcgtggcgctttctcatagctcacgctgtaggtatctcagttcggtgtaggtcgttcgctccaagctgggctgtgtgcacgaaccccccgttcagcccgaccgctgcgccttatccggtaactatcgtcttgagtccaacccggtaagacacgacttatcgccactggcagcagccactggtaacaggattagcagagcgaggtatgtaggcggtgctacagagttcttgaagtggtggcctaactacggctacactagaagaacagtatttggtatctgcgctctgctgaagccagttaccttcggaaaaagagttggtagctcttgatccggcaaacaaaccaccgctggtagcggtggtttttttgtttgcaagcagcagattacgcgcagaaaaaaaggatctcaagaagatcctttgatcttttctacggggtctgacgctcagtggaacgaaaactcacgttaagggattttggtcatgagattatcaaaaaggatcttcacctagatccttttaaattaaaaatgaagttttaaatcaatctaaagtatatatgagtaaacttggtctgacagttaccaatgcttaatcagtgaggcacctatctcagcgatctgtctatttcgttcatccatagttgcctgactcctgcaaaccacgttgtggtagaattggtaaagagagtcgtgtaaaatatcgagttcgcacatcttgttgtctgattattgatttttggcgaaaccatttgatcatatgacaagatgtgtatctaccttaacttaatgattttgataaaaatcattaggtacccctgatcactgtggaatgtgtgtcagttagggtgtggaaagtccccaggctccccagcaggcagaagtatgcaaagcatgcatctcaattagtcagcaaccaggtgtggaaagtccccaggctccccagcaggcagaagtatgcaaagcatgcatctcaattagtcagcaaccatagtcccgcccctaactccgcccatcccgcccctaactccgcccagttacggggtcattagttcatagcccatatatggagttccgcgttacataacttacggtaaatggcccgcctggctgaccgcccaacgacccccgcccattgacgtcaataatgacgtatgttcccatagtaacgccaatagggactttccattgacgtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatcatatgccaagtacgccccctattgacgtcaatgacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttggcagtacatctacgtattagtcatcgctattaccatggtgatgcggttttggcagtacatcaatgggcgtggatagcggtttgactcacggggatttccaagtctccaccccattgacgtcaatgggagtttgttttggcaccaaaatcaacgggactttccaaaatgtcgtaacaactccgccccattgacgcaaatgggcggtaggcgtgtacggtgggaggtctatataagcagagctcgtttagtgaaccgtcagatcgcctggagacgccatccacgctgttttgacctccatagaagacaccgggaccgatccagcctccgcggctcgcatctctccttcacgcgcccgccgccctacctgaggccgccatccacgccggttgagtcgcgttctgccgcctcccgcctgtggtgcctcctgaactgcgtccgccgtctaggtaagtttaaagctcaggtcgagaccgggcctttgtccggcgctcccttggagcctacctagactcagccggctctccacgctttgcctgaccctgcttgctcaactctagttctctcgttaacttaatgagacagatagaaactggtcttgtagaaacagagtagtcgcctgcttttctgccaggtgctgacttctctcccctgggcttttttctttttctcaggttgaaaagaagaagacgaagaagacgaagaagacaaaccgtcgtcgacatggtgagcaagggcgaggagctgttcaccggggtggtgcccatcctggtcgagctggacggcgacgtaaacggccacaagttcagcgtgtccggcgagggcgagggcgatgccacctacggcaagctgaccctgaagttcatctgcaccaccggcaagctgcccgtgccctggcccaccctcgtgaccaccctgacctacggcgtgcagtgcttcagccgctaccccgaccacatgaagcagcacgacttcttcaagtccgccatgcccgaaggctacgtccaggagcgcaccatcttcttcaaggacgacggcaactacaagacccgcgccgaggtgaagttcgagggcgacaccctggtgaaccgcatcgagctgaagggcatcgacttcaaggaggacggcaacatcctggggcacaagctggagtacaactacaacagccacaacgtctatatcatggccgacaagcagaagaacggcatcaaggtgaacttcaagatccgccacaacatcgaggacggcagcgtgcagctcgccgaccactaccagcagaacacccccatcggcgacggccccgtgctgctgcccgacaaccactacctgagcacccagtccgccctgagcaaagaccccaacgagaagcgcgatcacatggtcctgctggagttcgtgaccgccgccgggatcactctcggcatggacgagctgtacaagtaaccgcagatctttttccctctgccaaaaattatggggacatcatgaagccccttgagcatctgacttctggctaataaaggaaatttattttcattgcaatagtgtgttggaattttttgtgtctctcactcggaaggacataaggcggcc 

Vector Features eRNA11a RIG-I agonist: 7-532 trpA prokaryotic terminator: 535-564 Adenovirus serotype 5 VA RNAI (VA1): 568-761 Primosomal assembly site (PAS-BH) extended origin: 771-1055 pUC replication origin: 1056-2070 Sucrose selection marker (RNA-OUT): 2087-2231 SV40 enhancer: 2232-2451 CMV enhancer: 2452-2897 CMV promoter: 2898-3017 Untranslated leader (exon 1): 3018-3204 HTLV-1 R: 3089-3314 Synthetic Rabbit β-globin-based 3’ intron: 3323-3429 Intron: 3205-3429 Exon 2 (SR-protein binding sites-Kozak):3430-3478 EGFP: 3479-4198 SalI-BglII cloning cassette: 3473-4028 Eukaryotic terminator: 4209-4343 '''NTC8685 vector features''' 

{| border="1"
|-
| Feature
| Function
|-
| Optimized human cytomegalovirus (CMV)
| High-level mammalian cell expression in immediate-early enhancer promoter vitro and in vivo
|-
| HTLV-1 R
| Increase mammalian cell expression
|-
| Synthetic Intron
| Increase mRNA nuclear export
|-
| SR-protein binding sites (3x)
| Increase mRNA nuclear export 3XGAAGAAGAC 
|-
| Precision cloning cassette
| Clone target gene into the vector with vector defined intracellular trafficking
|-
| Synthetic eukaryotic polyadenylation
| Effective mRNA transcriptional termination signal-eukaryotic terminator and polyadenylation
|-
| eRNA11a
| RNA-based RIG-I agonis, for vaccine
|-
| trpA prokaryotic terminator 
| Protection of replication origin from insert initiated transcription
|-
| Adenoviral Serotype 5 VA RNAI (VA1) 
| Increased mammalian cell expression & eRNA11a mediated RIG-I activation 
|-
| PAS-BH primosomal assembly site
| Improved plasmid production yields
|-
| pUC replication origin
| High copy number plasmid production in Escherichia coli cells 
|-
| Sucrose selection marker (RNA-OUT)
| Plasmid selection in Escherichia coli cells*
|-
| SV40 enhancer
| Increased mammalian cell expression Improved plasmid production yields
|}

'''The chimeric promoter is composed of:''' 1) CMV promoter and start of exon 1; 2) A HTLV-I R sequence which contains the 5’ splice acceptor site; 3) A synthetic 3’ acceptor site based on the rabbit β globin intron; 4) Exon 2 splicing enhancer comprised of serine-arginine rich (SR) protein binding site (3 copies of GAAGAAGAC) to improve RNA export (Lavigueur et al. 1993); 5) Exon 2 kozak sequence upstream of the start codon for the gene of interest. an optimized chimeric promoter-intron (SV40-CMV-HTLV-1 R synthetic intron 

Good components: 

'''VA1''' 

 

ggtgcaaaaggagagcctgtaAGCGGGCACTCTTCCGTGGTCTGGTGGATAAATTCGCAAGGGTATCATGGCGGACGACCGGGGTTCGAACCCCGGATCCGGCCGTCCGCCGTGATCCATGCGGTTACCGCCCGCGTGTCGAACCCAGGTGTGCGACGTCAGACAACGGGGGAGCGCTCCTTTTGGCTTCCTTC

 

'''SV40-CMV-HTLV Promoter''' 

ccctgatcactgtggaatgtgtgtcagttagggtgtggaaagtccccaggctccccagcaggcagaagtatgcaaagcatgcatctcaattagtcagcaaccaggtgtggaaagtccccaggctccccagcaggcagaagtatgcaaagcatgcatctcaattagtcagcaaccatagtcccgcccctaactccgcccatcccgcccctaactccgcccagttacggggtcattagttcatagcccatatatggagttccgcgttacataacttacggtaaatggcccgcctggctgaccgcccaacgacccccgcccattgacgtcaataatgacgtatgttcccatagtaacgccaatagggactttccattgacgtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatcatatgccaagtacgccccctattgacgtcaatgacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttggcagtacatctacgtattagtcatcgctattaccatggtgatgcggttttggcagtacatcaatgggcgtggatagcggtttgactcacggggatttccaagtctccaccccattgacgtcaatgggagtttgttttggcaccaaaatcaacgggactttccaaaatgtcgtaacaactccgccccattgacgcaaatgggcggtaggcgtgtacggtgggaggtctatataagcagagctcgtttagtgaaccgtcagatcgcctggagacgccatccacgctgttttgacctccatagaagacaccgggaccgatccagcctccgcggctcgcatctctccttcacgcgcccgccgccctacctgaggccgccatccacgccggttgagtcgcgttctgccgcctcccgcctgtggtgcctcctgaactgcgtccgccgtctaggtaagtttaaagctcaggtcgagaccgggcctttgtccggcgctcccttggagcctacctagactcagccggctctccacgctttgcctgaccctgcttgctcaactctagttctctcgttaacttaatgagacagatagaaactggtcttgtagaaacagagtagtcgcctgcttttctgccaggtgctgacttctctcccctgggcttttttctttttctcaggttgaaaagaagaagacgaagaagacgaagaagacaaaccgtcgtcgac 

'''WPRE''' 

ATCGACAATCAACCTCTGGATTACAAAATTTGTGAAAGATTGACTGGTATTCTTAACTATGTTGCTCCTTTTACGCTATGTGGATACGCTGCTTTAATGCCTTTGTATCATGCTATTGCTTCCCGTATGGCTTTCATTTTCTCCTCCTTGTATAAATCCTGGTTGCTGTCTCTTTATGAGGAGTTGTGGCCCGTTGTCAGGCAACGTGGCGTGGTGTGCACTGTGTTTGCTGACGCAACCCCCACTGGTTGGGGCATTGCCACCACCTGTCAGCTCCTTTCCGGGACTTTCGCTTTCCCCCTCCCTATTGCCACGGCGGAACTCATCGCCGCCTGCCTTGCCCGCTGCTGGACAGGGGCTCGGCTGTTGGGCACTGACAATTCCGTGGTGTTGTCGGGGAAGCTGACGTCCTTTCCATGGCTGCTCGCCTGTGTTGCCACCTGGATTCTGCGCGGGACGTCCTTCTGCTACGTCCCTTCGGCCCTCAATCCAGCGGACCTTCCTTCCCGCGGCCTGCTGCCGGCTCTGCGGCCTCTTCCGCGTCTTCGCCTTCGCCCTCAGACGAGTCGGATCTCCCTTTGGGCCGCCTCCCCGCCTGG 

[[Category:Protocols]]

Transient Expression - Revision history

Paul.xu at 15:14, 13 August 2012