in vivo-jetPEI®

in vivo nucleic acid delivery

  • Polyvalent: in vivo delivery of nucleic acid in any animal model
  • Easy to use: two-step protocol
  • Renowned: Most advanced in vivo delivery technology with over 700 peer-reviewed publications
  • Successful: Used from fundamental research to Human clinical trails



in vivo-jetPEI®

Molecule delivered



in vivo functional studies (overexpression, knock-down, CRISPR genome editing)
Cancer Research

Targeted organs

All organs

Injection routes

Various systemic and local administration routes

Number of transfections

eg. 100 µl of in vivo-jetPEI® delivery reagent is sufficient to perform 15 to 25 intravenous injections in mouse.


-20 ± 5 °C, for at least 12 months

Provided with

10% glucose solution


in vivo-jetPEI® is the most advanced in vivo transfection reagent for safe and efficient in vivo delivery of any nucleic acid (eg. DNA, mRNA, siRNA, miRNA, oligonucleotides) in animal models. With a track record of over 700 publications, in vivo-jetPEI® is the consensual in vivo transfection method for in vivo functional studies, cancer research and immunization/vaccination.

in vivo jetPEI - product range - in vivo transfection
Table 1: Range of in vivo-jetPEI® quality grade reagents for each step of nucleic acid-mediated viral vector-based manufacturing. in vivo-jetPEI® is available as an R&D grade for fundamental research and proof of concept studies. For preclinical biodistribution and toxicology studies and early phase clinical studies, we supply a higher preclinical grade in vivo-jetPEI®. GMP in vivo-jetPEI® is the highest quality grade available to meet quality demands in Human clinical trials.

Ordering information

Reference NumberAmount of reagentAmount of 10% glucose solution
201-10G0.1 ml10 ml
201-50G0.5 ml2 x 10 ml

Bulk quantities and GMP grade reagent are available upon request. Please contact us.

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Polyvalent: in vivo delivery of any nucleic acid in any animal model including mice

The easiness of use and versatility of in vivo-jetPEI® allows scientists to perform gene function studies by overexpressing or downregulating a gene in any organ/tissue of interest. in vivo-jetPEI® is polyvalent: it is suitable for the delivery of any type of nucleic acid (plasmid DNA, siRNA, shRNA, miRNA, oligonucleotides and mRNA) in any animal model (mice, rat, guinea pig, dog, rabbit, monkey, etc…). Numerous Scientific publications demonstrate the successful delivery of each type of nucleic acid in different animal model.

Find more information on our online in vivo Transfection Database


in vivo-jetPEI® has already been used to target a wide range of organs by systemic and local injection routes. Local administration routes include subcutaneous tumor, intracerebral or intra-articular injections and topical application. The injection route largely determines the targeted organs. For example, upon intravenous injection, in vivo-jetPEI®-mediated DNA delivery leads to gene expression mainly in the lung but also in the liver, pancreas, spleen, kidney, heart, bladder and artery. Conversely, upon intraperitoneal injection, the gene of interest will be expressed in the ovary, pancreas, diaphragm, uterus and stomach (Fig. 1). To achieve organ specific gene expression, cell-specific promoters can be combined with the choice of a local injection route to restrict gene expression to an organ/tissue. Guidelines for systemic and most local injection routes are available.

<em>in vivo</em>-jetPEI - Intravenous injection & intraperitoneal injection in mice
Fig. 1: Organs targeted following systemic nucleic acid delivery using in vivo-jetPEI® in mice. Complexes were formed using 40 μg or 100 μg of luciferase expressing plasmid and in vivo-jetPEI® at an N/P ratio of 8, in 200 μl or 1 ml of 5% glucose and injected either through retro-orbital sinus (IV) or intraperitoneally (IP), respectively. 24 hours after injection, different organs were extracted and luciferase expression was measured or live imaging was performed using IVIS system (Perkin Elmer).


Easy-to-use: two-step protocol

 in vivo-jetPEI® is the reagent of choice to deliver any type of nucleic acid using most systemic and local injection routes. The protocol is easy to use and similar to a classical in vitro transfection: the nucleic acid and in vivo-jetPEI® reagent are mixed and directly injected into the animal model (Fig. 2).

<em>in vivo</em>-jetPEI - easy 2-step protocol
Fig 2: in vivo-jetPEI® protocol in mice. This two-step protocol is compatible with direct injection of in vivo-jetPEI®/nucleic acid nanoparticles though any systemic or local administration routes.

Our delivery experts are available to adapt your protocol to your animal model and send you the relevant literature.

contact the technical support


Renowned: Most advanced in vivo delivery technology for cancer research, immunization and vaccination

in vivo-jetPEI® is a powerful polymer-based reagent with unique properties. In the provided complexation solution, in vivo-jetPEI® condenses any nucleic acid into stable nanoparticles of ca. 50 nm diameter (Fig 1). These nanoparticles are sufficiently small to efficiently diffuse within tissues and enter cells by endocytosis, while protecting naked nucleic acids from degradation. At the cellular level, in vivo-jetPEI facilitates both endosomal escape using the proton sponge mechanism (Akinc et al. (2005), J Gene Med 7: 657), and crossing of the nuclear membrane (Brunner et al. (2002), Mol Ther 5: 80).

<em>in vivo</em>-jetPEI - complex size
Fig. 3 in vivo-jetPEI® forms small spherical particles with plasmid DNA. in vivo-jetPEI®/DNA complexes are prepared in 5% glucose solution at N/P ratio of 10. Complexes were added on a carbon covered grid and stained with uranyl acetate. Observation was carried out under a TEM. Bar is 100 nm. Complexes produced in glucose solution are discrete spheres having a mean size of 50 +/- 30 nm (Courtesy J-S Remy, Laboratoire Chimie Génétique, CNRS UMR 7514, Illkirch, France).


Successful: Used from fundamental research to Human clinical trials

Due to its reliability, in vivo-jetPEI® has been selected as a delivery vector for several drug development programs due to its safety and delivery efficiency. There are currently several ongoing clinical trials for cancer therapies, vaccination and immunization using higher quality grade cGMP in vivo-jetPEI®.


If you have any questions regarding in vivo-jetPEI®, please visit our dedicated Frequently asked questions or contact us.

in vivo functional studies

in vivo-jetPEI® is perfectly suited to study gene function in vivo and provides the easiest method for the validation of in vitro functional studies into animals.

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Cancer Therapy

in vivo-jetPEI®-based nucleic acid delivery is now widely used for tumor growth inhibition studies. As an example, the delivery of a modified siRNA against Cyclin B1 with in vivo-jetPEI® inhibits the formation of lung metastases (Fig. 4A) and in vivo-jetPEI® mediated delivery of a modified siRNA against Survivin prevents the growth of a tumor xenograft model (Fig. 4B).

<em>in vivo</em>-jetPEI - Cancer therapy
Fig. 4: Tumor growth inhibition following in vivo-jetPEI® mediated delivery of modified siRNAs. (A) Mice were injected intravenously with TSA-Luc cells forming exclusively lung metastases. 2 days after cell injection, the mice were treated intravenously with 1 mg/kg of STICKY siRNA™ against cyclin B1 (N/P=12.5). Bioluminescence imaging was performed 10 days after cell injection. Data from Bonnet et al., (2013), J Control Release 170(2) :183-90. (B) Mice bearing tumor xenografts were treated intravenously with 1 mg/kg of STICKY siRNA™ against Survivin (N/P=12.5). Tumor growth was monitored after each treatment and represented as a mean tumor volume ± SEM. Data from Kedinger et al., (2013), BMC Cancer 13:338.

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Following in vivo administration of plasmid DNA formulated with in vivo-jetPEI®, the expressed protein can elicit the induction of a robust and persistent immune response, hence protecting animals from different viruses or pathogens challenge.

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 in vivo gene editing using CRISPR/Cas9 system

in vivo-jetPEI®-mediated delivery of CRISPR/Cas9 system targeting tumor suppressor genes provides a flexible and effective method to investigate somatic loss-of-function alterations and their influence on tumorigenesis.

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in vivo-jetPEI® is the leading in vivo delivery method with a proven track record of peer-reviewed scientific publications, ranging from fundamental gene function studies to cancer research and vaccination studies.  Here is a list of recent publications per application:

  • Cancer research:

Chen, C. H., Chen, P. Y., Lin, Y. Y., Feng, L. Y., Chen, S. H., Chen, C. Y., Huang, Y. C., Huang, C. Y., Jung, S. M., Chen, L. Y., Wei, K. C. (2019). Suppression of tumor growth via IGFBP3 depletion as a potential treatment in glioma., J Neurosurg , 1-12

Choe, M. H., Yoon, Y., Kim, J., Hwang, S. G., Han, Y. H., Kim, J. S. (2018). miR-550a-3-5p acts as a tumor suppressor and reverses BRAF inhibitor resistance through the direct targeting of YAP., Cell Death Dis 9, 640


  • Vaccination/immunization:

Lee, J., Park, E. B., Min, J., Sung, S. E., Jang, Y., Shin, J. S., Chun, D., Kim, K. H., Hwang, J., Lee, M. K., Go, Y. Y., Kwon, D., Kim, M., Kang, S. J., Choi, B. S. (2018). Systematic editing of synthetic RIG-I ligands to produce effective antiviral and anti-tumor RNA immunotherapies., Nucleic Acids Res 46, 1635-1647

O’Neil, R. T., Saha, S., Veach, R. A., Welch, R. C., Woodard, L. E., Rooney, C. M., Wilson, M. H. (2018). Transposon-modified antigen-specific T lymphocytes for sustained therapeutic protein delivery in vivo., Nat Commun 9, 1325

Cao, W., Mishina, M., Amoah, S., Mboko, W. P., Bohannon, C., McCoy, J., Mittal, S. K., Gangappa, S., Sambhara, S. (2018). Nasal delivery of H5N1 avian influenza vaccine formulated with GenJet or in vivo-jetPEI((R)) induces enhanced serological, cellular and protective immune responses., Drug Deliv 25, 773-779


  • Functional studies:

Xiao, Y., Barbosa, C., Pei, Z., Xie, W., Strong, J. A., Zhang, J. M., Cummins, T. R. (2019). Increased resurgent sodium currents in Nav1.8 contribute to nociceptive sensory neuron hyperexcitability associated with peripheral neuropathies., J Neurosci

Fujita, K., Chen, X., Homma, H., Tagawa, K., Amano, M., Saito, A., Imoto, S., Akatsu, H., Hashizume, Y., Kaibuchi, K., Miyano, S., Okazawa, H. (2018). Targeting Tyro3 ameliorates a model of PGRN-mutant FTLD-TDP via tau-mediated synaptic pathology., Nat Commun 9, 433

Wen, Q., Wu, S., Lee, W. M., Wong, C. K. C., Lui, W. Y., Silvestrini, B., Cheng, C. Y. (2019). Myosin VIIa supports spermatid/organelle transport and cell adhesion during spermatogenesis in the rat testis., Endocrinology.

« I finished the experiments and I think in vivo-jetPEI® works great. I am very pleased with the results. Actually some of the work we have done with in vivo-jetPEI® as well as jetSI™ 10 mM has been published in Science. […] I am also very pleased with the technical assistance. Many thanks! » – Emine E.K., Hacettepe University, Turkey

« Our project is going quite well, we are working a lot with your siRNAs delivery system, and we are obtaining superb results in vivo. » – Mattia C., L’Aquila University, Italy

« in vivo-jetPEI® is a very nice reagent to work with! » – Marie-Line G., Lady Davis Institute, Canada

Polyplus-transfection® is ISO 9001 Quality Management System accredited since 2002; this level of certification assures global customers that the supplier has established reliable and effective processes for product development, manufacturing, sales and customer support.

Each batch of in vivo-jetPEI® reagent is tested for conformity to established Quality Controls and relevant specifications. A Certificate of Analysis is provided with each vial of reagent