Efficient induction of CD8 T-associated immune protection by vaccination with mRNA transfected dendritic cells. 2003

Shohreh Zarei, and Jean-François Arrighi, and Gioele Ongaro, and Thomas Calzascia, and Olivier Haller, and Christophe Frossard, and Vincent Piguet, and Paul R Walker, and Conrad Hauser
Allergy Unit, Division of Immunology and Allergy, University Hospital, Geneva Switzerland.

Dendritic cells are excellent targets for antigen-specific immune intervention. Here we attempted to introduce a CD8 T cell-dependent epitope into dendritic cells for presentation on major histocompatibility complex class I and induction of immunity. Murine bone-marrow-derived dendritic cells were subjected to electroporation with mRNA transcribed in vitro from a plasmid encoding lymphocytic choriomeningitis virus glycoprotein or enhanced green fluorescent protein under the control of a T7 promotor. The transfection efficiency of dendritic cells was 22 to 40%. Maturation was not inhibited by the electroporation. Dendritic cells electroporated with the appropriate antigen induced cell number-dependent in vitro proliferation in CD8 T cells expressing a transgenic receptor recognizing the 33 to 41 sequence of lymphocytic choriomeningitis virus glycoprotein in association with H-2Kb/Db, indicating correct synthesis, processing, and presentation of the epitope. Naive C57BL/6 mice vaccinated with electroporated dendritic cells and challenged with lymphocytic choriomeningitis virus were protected. Vaccination induced epitope-specific T cells as assessed by tetramer staining in blood and spleen. These results indicate that targeting dendritic cells with antigen-encoding mRNA can induce antigen-specific CD8 T cell responses as well as protective anti-viral immunity in vivo. Targeting dendritic cells with antigen-encoding mRNA may find wider application for immune intervention in disorders such as autoimmunity and cancer.

UI MeSH Term Description Entries
D008216 Lymphocytic Choriomeningitis A form of meningitis caused by LYMPHOCYTIC CHORIOMENINGITIS VIRUS. MICE and other rodents serve as the natural hosts, and infection in humans usually occurs through inhalation or ingestion of infectious particles. Clinical manifestations include an influenza-like syndrome followed by stiff neck, alterations of mentation, ATAXIA, and incontinence. Maternal infections may result in fetal malformations and injury, including neonatal HYDROCEPHALUS, aqueductal stenosis, CHORIORETINITIS, and MICROCEPHALY. (From Joynt, Clinical Neurology, 1996, Ch26, pp1-3) Armstrong Syndrome,Armstrong's Syndrome,Encephalomyelitis, Lymphocytic Choriomeningitis Virus,Lymphocytic Choriomeningitis Virus Encephalomyelitis,Choriomeningitis, Lymphocytic,Syndrome, Armstrong,Syndrome, Armstrong's
D008217 Lymphocytic choriomeningitis virus The type species of ARENAVIRUS, part of the Old World Arenaviruses (ARENAVIRUSES, OLD WORLD), producing a silent infection in house and laboratory mice. In humans, infection with LCMV can be inapparent, or can present with an influenza-like illness, a benign aseptic meningitis, or a severe meningoencephalomyelitis. The virus can also infect monkeys, dogs, field mice, guinea pigs, and hamsters, the latter an epidemiologically important host. LCM Viruses,LCMV,LCM Virus,Lymphocytic choriomeningitis viruses
D008297 Male Males
D008822 Mice, Transgenic Laboratory mice that have been produced from a genetically manipulated EGG or EMBRYO, MAMMALIAN. Transgenic Mice,Founder Mice, Transgenic,Mouse, Founder, Transgenic,Mouse, Transgenic,Mice, Transgenic Founder,Transgenic Founder Mice,Transgenic Mouse
D003713 Dendritic Cells Specialized cells of the hematopoietic system that have branch-like extensions. They are found throughout the lymphatic system, and in non-lymphoid tissues such as SKIN and the epithelia of the intestinal, respiratory, and reproductive tracts. They trap and process ANTIGENS, and present them to T-CELLS, thereby stimulating CELL-MEDIATED IMMUNITY. They are different from the non-hematopoietic FOLLICULAR DENDRITIC CELLS, which have a similar morphology and immune system function, but with respect to humoral immunity (ANTIBODY PRODUCTION). Dendritic Cells, Interdigitating,Interdigitating Cells,Plasmacytoid Dendritic Cells,Veiled Cells,Dendritic Cells, Interstitial,Dendritic Cells, Plasmacytoid,Interdigitating Dendritic Cells,Interstitial Dendritic Cells,Cell, Dendritic,Cell, Interdigitating,Cell, Interdigitating Dendritic,Cell, Interstitial Dendritic,Cell, Plasmacytoid Dendritic,Cell, Veiled,Cells, Dendritic,Cells, Interdigitating,Cells, Interdigitating Dendritic,Cells, Interstitial Dendritic,Cells, Plasmacytoid Dendritic,Cells, Veiled,Dendritic Cell,Dendritic Cell, Interdigitating,Dendritic Cell, Interstitial,Dendritic Cell, Plasmacytoid,Interdigitating Cell,Interdigitating Dendritic Cell,Interstitial Dendritic Cell,Plasmacytoid Dendritic Cell,Veiled Cell
D005260 Female Females
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D012333 RNA, Messenger RNA sequences that serve as templates for protein synthesis. Bacterial mRNAs are generally primary transcripts in that they do not require post-transcriptional processing. Eukaryotic mRNA is synthesized in the nucleus and must be exported to the cytoplasm for translation. Most eukaryotic mRNAs have a sequence of polyadenylic acid at the 3' end, referred to as the poly(A) tail. The function of this tail is not known for certain, but it may play a role in the export of mature mRNA from the nucleus as well as in helping stabilize some mRNA molecules by retarding their degradation in the cytoplasm. Messenger RNA,Messenger RNA, Polyadenylated,Poly(A) Tail,Poly(A)+ RNA,Poly(A)+ mRNA,RNA, Messenger, Polyadenylated,RNA, Polyadenylated,mRNA,mRNA, Non-Polyadenylated,mRNA, Polyadenylated,Non-Polyadenylated mRNA,Poly(A) RNA,Polyadenylated mRNA,Non Polyadenylated mRNA,Polyadenylated Messenger RNA,Polyadenylated RNA,RNA, Polyadenylated Messenger,mRNA, Non Polyadenylated
D014162 Transfection The uptake of naked or purified DNA by CELLS, usually meaning the process as it occurs in eukaryotic cells. It is analogous to bacterial transformation (TRANSFORMATION, BACTERIAL) and both are routinely employed in GENE TRANSFER TECHNIQUES. Transfections
D014611 Vaccination Administration of vaccines to stimulate the host's immune response. This includes any preparation intended for active immunological prophylaxis. Immunization, Active,Active Immunization,Active Immunizations,Immunizations, Active,Vaccinations

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