Gene transfer to chicks using lentiviral vectors administered via the embryonic chorioallantoic membrane.
The lack of affordable techniques for gene transfer in birds has inhibited the advancement of molecular studies in avian species. Here we demonstrate a new approach for introducing genes into chicken somatic tissues by administration of a lentiviral vector, derived from the feline immunodeficiency v...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2012-01-01
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| Series: | PLoS ONE |
| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22606269/?tool=EBI |
| _version_ | 1818742400026148864 |
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| author | Gideon Hen Sara Yosefi Dmitry Shinder Adi Or Sivan Mygdal Reba Condiotti Eithan Galun Amir Bor Dalit Sela-Donenfeld Miriam Friedman-Einat |
| author_facet | Gideon Hen Sara Yosefi Dmitry Shinder Adi Or Sivan Mygdal Reba Condiotti Eithan Galun Amir Bor Dalit Sela-Donenfeld Miriam Friedman-Einat |
| author_sort | Gideon Hen |
| collection | DOAJ |
| description | The lack of affordable techniques for gene transfer in birds has inhibited the advancement of molecular studies in avian species. Here we demonstrate a new approach for introducing genes into chicken somatic tissues by administration of a lentiviral vector, derived from the feline immunodeficiency virus (FIV), into the chorioallantoic membrane (CAM) of chick embryos on embryonic day 11. The FIV-derived vectors carried yellow fluorescent protein (YFP) or recombinant alpha-melanocyte-stimulating hormone (α-MSH) genes, driven by the cytomegalovirus (CMV) promoter. Transgene expression, detected in chicks 2 days after hatch by quantitative real-time PCR, was mostly observed in the liver and spleen. Lower expression levels were also detected in the brain, kidney, heart and breast muscle. Immunofluorescence and flow cytometry analyses confirmed transgene expression in chick tissues at the protein level, demonstrating a transduction efficiency of ∼0.46% of liver cells. Integration of the viral vector into the chicken genome was demonstrated using genomic repetitive (CR1)-PCR amplification. Viability and stability of the transduced cells was confirmed using terminal deoxynucleotidyl transferase (dUTP) nick end labeling (TUNEL) assay, immunostaining with anti-proliferating cell nuclear antigen (anti-PCNA), and detection of transgene expression 51 days post transduction. Our approach led to only 9% drop in hatching efficiency compared to non-injected embryos, and all of the hatched chicks expressed the transgenes. We suggest that the transduction efficiency of FIV vectors combined with the accessibility of the CAM vasculature as a delivery route comprise a new powerful and practical approach for gene delivery into somatic tissues of chickens. Most relevant is the efficient transduction of the liver, which specializes in the production and secretion of proteins, thereby providing an optimal target for prolonged study of secreted hormones and peptides. |
| first_indexed | 2024-12-18T02:11:55Z |
| format | Article |
| id | doaj.art-437e5b61e79640ba94be725054b41893 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-18T02:11:55Z |
| publishDate | 2012-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-437e5b61e79640ba94be725054b418932022-12-21T21:24:29ZengPublic Library of Science (PLoS)PLoS ONE1932-62032012-01-0175e3653110.1371/journal.pone.0036531Gene transfer to chicks using lentiviral vectors administered via the embryonic chorioallantoic membrane.Gideon HenSara YosefiDmitry ShinderAdi OrSivan MygdalReba CondiottiEithan GalunAmir BorDalit Sela-DonenfeldMiriam Friedman-EinatThe lack of affordable techniques for gene transfer in birds has inhibited the advancement of molecular studies in avian species. Here we demonstrate a new approach for introducing genes into chicken somatic tissues by administration of a lentiviral vector, derived from the feline immunodeficiency virus (FIV), into the chorioallantoic membrane (CAM) of chick embryos on embryonic day 11. The FIV-derived vectors carried yellow fluorescent protein (YFP) or recombinant alpha-melanocyte-stimulating hormone (α-MSH) genes, driven by the cytomegalovirus (CMV) promoter. Transgene expression, detected in chicks 2 days after hatch by quantitative real-time PCR, was mostly observed in the liver and spleen. Lower expression levels were also detected in the brain, kidney, heart and breast muscle. Immunofluorescence and flow cytometry analyses confirmed transgene expression in chick tissues at the protein level, demonstrating a transduction efficiency of ∼0.46% of liver cells. Integration of the viral vector into the chicken genome was demonstrated using genomic repetitive (CR1)-PCR amplification. Viability and stability of the transduced cells was confirmed using terminal deoxynucleotidyl transferase (dUTP) nick end labeling (TUNEL) assay, immunostaining with anti-proliferating cell nuclear antigen (anti-PCNA), and detection of transgene expression 51 days post transduction. Our approach led to only 9% drop in hatching efficiency compared to non-injected embryos, and all of the hatched chicks expressed the transgenes. We suggest that the transduction efficiency of FIV vectors combined with the accessibility of the CAM vasculature as a delivery route comprise a new powerful and practical approach for gene delivery into somatic tissues of chickens. Most relevant is the efficient transduction of the liver, which specializes in the production and secretion of proteins, thereby providing an optimal target for prolonged study of secreted hormones and peptides.https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22606269/?tool=EBI |
| spellingShingle | Gideon Hen Sara Yosefi Dmitry Shinder Adi Or Sivan Mygdal Reba Condiotti Eithan Galun Amir Bor Dalit Sela-Donenfeld Miriam Friedman-Einat Gene transfer to chicks using lentiviral vectors administered via the embryonic chorioallantoic membrane. PLoS ONE |
| title | Gene transfer to chicks using lentiviral vectors administered via the embryonic chorioallantoic membrane. |
| title_full | Gene transfer to chicks using lentiviral vectors administered via the embryonic chorioallantoic membrane. |
| title_fullStr | Gene transfer to chicks using lentiviral vectors administered via the embryonic chorioallantoic membrane. |
| title_full_unstemmed | Gene transfer to chicks using lentiviral vectors administered via the embryonic chorioallantoic membrane. |
| title_short | Gene transfer to chicks using lentiviral vectors administered via the embryonic chorioallantoic membrane. |
| title_sort | gene transfer to chicks using lentiviral vectors administered via the embryonic chorioallantoic membrane |
| url | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22606269/?tool=EBI |
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