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TransIT-TKO® Transfection Reagent

A high efficiency, low toxicity, siRNA transfection reagent for mammalian cells

Product No.QuantityPriceAdd to Cart
TransIT-TKO® Transfection Reagent
MIR 21540.4 ml$250.00
MIR 21501 ml$402.00
MIR 21555 x 1 ml$1,755.00
MIR 215610 x 1 ml$3,245.00
To inquire about bulk pricing, please call 888-530-0801.
International inquiries please call +1-608-441-2852.
 
 

  • Broad Spectrum siRNA and Plasmid DNA Delivery - Utilize one transfection reagent and protocol for a wide variety of cells.
  • Low Cellular Toxicity - Maintain cell density and reduce experimental biases.
  • Reproducible Results - Obtain consistent, targeted gene knockdowns from day to day.
  • High Knockdown Efficiency - Achieve optimal gene silencing in a large percentage of cells to ensure experimental success.
 

"We have tried other transfection reagents, but only the TransIT-TKO reagent gives us a 100% transfection rate and gene knockdown without toxicity in these cells (RAW 264.7)." - Nature Protocols 1: 508 - 517 (2006)

 

Additional Information

NEW! Stem cell applications
Cell Types successfully transfected at Mirus using TransIT-TKO Transfection Reagent (pdf)
Identify the best siRNA transfection reagent for your knockdown experiments

Data

Figure 1: High Efficiency Endogenous Knockdown in iCell® Cardiomyocytes using TransIT-TKO®
Figure 2: Delivery of Fluorescently-Labeled siRNA using TransIT-TKO® Transfection Reagent
Figure 3: High Efficiency Knockdown and Low Toxicity Using TransIT-TKO® Reagent
Figure 4: Efficient Knockdown of Endogenous Genes in Primary Hepatocytes Using TransIT-TKO® Reagent.
Figure 5: Knockdown of Endogenous Genes Using TransIT-TKO® Reagent.

Figure 1:High Efficiency Endogenous Knockdown in iCell® Cardiomyocytes using TransIT-TKO®

Fig 1. High Efficiency Endogenous Knockdown in iCell® Cardiomyocytes. The TransIT-TKO® Transfection Reagent was used to transfect iCell Cardiomyocytes (Cellular Dynamics International) plated at a density of 136,500 cells per well of a 12-well plate pre-coated with fibronectin. Seven days post-plating triplicate wells were transfected with TransIT-TKO (3-5 ml per well) and non-targeting control siRNA or GAPDH targeting siRNA (50nM per well). Seventy-two hours post-transfection, the amount of GAPDH mRNA was measured relative to 18s rRNA mRNA levels using qRT-PCR and then scaled to the expression level of the non-targeting control siRNA.  Error bars represent the standard error of the mean (SEM) of three independent complexes. See more information on stem cell applications.

 
Figure 2:Delivery of Fluorescently-Labeled siRNA using TransIT-TKO® Transfection Reagent
Figure 2. Delivery of Fluorescently-Labeled siRNA using TransIT-TKO® Transfection Reagent. HeLa (70% confluence) cells in 12-well plates were transfected with TransIT-TKO® Transfection Reagent (3 μl/well) and Label IT® siRNA Tracker Fluorescein-labeled siRNA duplexes (GREEN, 50 nM final concentration in the well). The cells were incubated 24 hours post-transfection then fixed and counterstained with TO-PRO®-3 (nuclei, BLUE) (Life Technologies) and Alexa Fluor® 546 Phalloidin (actin, RED) (Life Technologies). Confocal images were acquired on a Zeiss LSM 510 Confocal Microscope.
 
Figure 3:High Efficiency Knockdown and Low Toxicity Using TransIT-TKO® Reagent

Figure 3. High Efficiency Knockdown and Low Toxicity Using TransIT-TKO® Reagent in HeLa cells. Firefly and sea pansy luciferase reporter vectors were co-transfected into HeLa cells using TransIT®-LT1 Reagent. Cells were incubated for at least 4 hours, split into 24-well plates, allowed to adhere and transfected with 25 nM of either a non-targeting siRNA or an anti-firefly luciferase siRNA using the indicated reagents with the volumes noted beneath each well. Luciferase expression, normalized to non-targeting siRNA control (bar graph) and lactate dehydrogenase (LDH) levels (line graph) were measured at 24 hours post-transfection. LDH levels are reported as % cytotoxicity compared to cells alone and were measured using a commercially available colorimetric assay; all values at or below zero are represented as zero on graph.

 
Figure 4:Efficient Knockdown of Endogenous Genes in Primary Hepatocytes Using TransIT-TKO® Reagent.
Figure 4. Efficient Knockdown of Endogenous Genes in Primary Hepatocytes Using TransIT-TKO® Reagent. Primary mouse hepatocytes were transfected with the indicated siRNAs or a non-targeting control siRNA using the TransIT-TKO® Reagent. Twenty-four hours post-transfection, the amount of each mRNA was measured relative to GAPDH mRNA levels using qRT-PCR and then scaled to the expression level of the specific target mRNA in the cells alone (untreated) controls.
 
Cell Line (Source) Endogenous Transcript Knockdown Efficiency
BNL CL.2 (mouse liver) MAPK1 80%
  MAPK3 83%
HeLa (human cervix) Lamin A/C 80%
  GAPDH 80%
Hepa1c1c7 (mouse liver) MAPK1 80%
  MAPK3 75%
  MEK1 75%
  PTEN 80%
HepG2 (human liver) MAPK1 80%
NIH 3T3-L1 MAPK1 70%
  MAPK3 70%
Secondary Human Astrocytes Lamin A/C 80%
Primary Mouse Hepatocytes ABC A1 70%
  Lamin A/C 81%
Figure 5. Knockdown of Endogenous Genes Using TransIT-TKO® Reagent. Various cells were transfected with siRNAs targeting the indicated genes using the TransIT-TKO® Reagent, and the knockdown percentage was determined using quantitative RT-PCR.