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Notes
This assay will NOT distinguish hemizygous from homozygous transgenic animals.
The genotyping protocol(s) presented here have been optimized for reagents and conditions used by The Jackson Laboratory (JAX).
To genotype animals, JAX recommends researchers validate the assay independently upon receipt of animals into their facility.
Reaction cycling temperature and times may require additional optimization based on the specific genotyping reagents used.
Expected Results
JR4915, huFcRn line 32, will give a transgene band ~740 bp.
JR4919, huFcRn line 276 will give a product ~350 bp (because 32 is based on genomic DNA and 276 on cDNA).
Separated by gel electrophoresis on a 1.5% agarose gel.
JAX Protocol
Protocol Primers
| Primer | 5' Label | Sequence 5' → 3' | 3' Label | Primer Type | Reaction | Note |
|---|---|---|---|---|---|---|
| oIMR7718 | AGC CAA GTC CTC CGT GCT C | Transgene Forward | A | FCGRT | ||
| oIMR7719 | CTC AGA GAT GCC AGT GTT CC | Transgene Reverse | A | FCGRT | ||
| oIMR8744 | CAA ATG TTG CTT GTC TGG TG | Internal Positive Control Forward | B | |||
| oIMR8745 | GTC AGT CGA GTG CAC AGT TT | Internal Positive Control Reverse | B |
Reaction A
| Component | Final Concentration |
|---|---|
| ddH2O | |
| Kapa 2G HS buffer | 1.30 X |
| MgCl2 | 2.60 mM |
| dNTPS-kapa | 0.26 mM |
| oIMR7718 | 0.50 uM |
| oIMR7719 | 0.50 uM |
| Glycerol | 6.50 % |
| Dye | 1.00 X |
| Kapa 2G HS taq polym | 0.03 U/ul |
| DNA |
Cycling
| Step | Temp °C | Time | Note |
|---|---|---|---|
| 1 | 94.0 | -- | |
| 2 | 94.0 | -- | |
| 3 | 65.0 | -- | -0.5 C per cycle decrease |
| 4 | 68.0 | -- | |
| 5 | -- | repeat steps 2-4 for 10 cycles (Touchdown) | |
| 6 | 94.0 | -- | |
| 7 | 60.0 | -- | |
| 8 | 72.0 | -- | |
| 9 | -- | repeat steps 6-8 for 28 cycles | |
| 10 | 72.0 | -- | |
| 11 | 10.0 | -- | hold |
JAX uses a very high speed Taq (~1000 bp/sec), use cycling times recommended for your reagents.
JAX uses a 'touchdown' cycling protocol and therefore has not calculated the optimal annealing temperature for each set of primers.
Reaction B
| Component | Final Concentration |
|---|---|
| ddH2O | |
| Kapa 2G HS buffer | 1.30 X |
| MgCl2 | 2.60 mM |
| dNTPS-kapa | 0.26 mM |
| oIMR8744 | 0.50 uM |
| oIMR8745 | 0.50 uM |
| Glycerol | 6.50 % |
| Dye | 1.00 X |
| Kapa 2G HS taq polym | 0.03 U/ul |
| DNA |
Cycling
| Step | Temp °C | Time | Note |
|---|---|---|---|
| 1 | 94.0 | -- | |
| 2 | 94.0 | -- | |
| 3 | 65.0 | -- | -0.5 C per cycle decrease |
| 4 | 68.0 | -- | |
| 5 | -- | repeat steps 2-4 for 10 cycles (Touchdown) | |
| 6 | 94.0 | -- | |
| 7 | 60.0 | -- | |
| 8 | 72.0 | -- | |
| 9 | -- | repeat steps 6-8 for 28 cycles | |
| 10 | 72.0 | -- | |
| 11 | 10.0 | -- | hold |
JAX uses a very high speed Taq (~1000 bp/sec), use cycling times recommended for your reagents.
JAX uses a 'touchdown' cycling protocol and therefore has not calculated the optimal annealing temperature for each set of primers.
Strains Using This Protocol
| Stock Number | Strain Name |
|---|---|
| 021146 | B6.Cg-Fcgrttm1Dcr Prkdcscid Tg(CAG-FCGRT)276Dcr/DcrJ |
| 004919 | B6.Cg-Fcgrttm1Dcr Tg(CAG-FCGRT)276Dcr/DcrJ |
| 014565 | B6.Cg-Fcgrttm1Dcr Tg(FCGRT)32Dcr/DcrJ |
| 016919 | B6.Cg-Rag1tm1Mom Fcgrttm1Dcr Tg(CAG-FCGRT)276Dcr/DcrJ |
| 029686 | B6.Cg-Tg(FCGRT)32Dcr Fcgrttm1Dcr Ighg1em2(IGHG1)Mvw/MvwJ |
| 025099 | BXSB.Cg-Fcgrttm1Dcr Tg(FCGRT)99Dcr/J |
| 028616 | NOD.Cg-Tg(CAG-FCGRT)276Dcr Fcgrttm1Dcr Prkdcscid Il2rgtm1Wjl/J |
| 7 strains use this protocol | |