Plasmid transfection in bovine cells: Optimization using a realtime monitoring of green fluorescent protein and effect on gene reporter assay
Gene reporter technology (GRT) has opened several new avenues for monitoring biological events including the activation of transcription factors, which are central to the study of nutrigenomics. However, this technology relies heavily on the insertion of foreign plasmid DNA into the nuclei of cells...
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| Veröffentlicht in: | Gene 2017-08, Vol.626, p.200-208 |
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| description | Gene reporter technology (GRT) has opened several new avenues for monitoring biological events including the activation of transcription factors, which are central to the study of nutrigenomics. However, this technology relies heavily on the insertion of foreign plasmid DNA into the nuclei of cells (i.e., transfection), which can be very challenging and highly variable among cell types. The objective of this study was to investigate the optimal conditions to generate reliable GRT assay data on bovine immortalized cell lines, Madin Darby Bovine Kidney (MDBK) and bovine mammary epithelial alveolar (MACT) cells. Results are reported for two experiments. In Experiment 1, using 96 well-plate and a robotic inverted fluorescent microscope, we compared transfection efficiency among commercially available transfection reagents (TR) Lipofectamine® 3000 (Lipo3), Lipofectamine® LTX (LipoLTX), and TransIT-X2® (TransX2), three doses of TR (i.e., 0.15, 0.3, and 0.4μL/well), and three doses of Green Fluorescent Protein plasmid DNA (i.e., 10, 25, and 50ng/well). Transfection efficiency and mortality rate were analyzed using CellProfiler software. Transfection efficiency increased until the end of the experiment (20h post-transfection) at which point MACT had greater transfection than MDBK cells (16.3% vs. 2.2%). It is unclear the reason for the low transfection in MDBK cells. Maximal transfection efficiency was obtained with 0.3μL/well of LipoLTX plus 25ng/well of plasmid DNA (ca. 29.5±1.9%) and 0.15μL/well of LipoLTX plus 25ng/well of plasmid DNA (ca. 4.0±0.4%) for MACT and MDBK cells, respectively. The higher amount of TR and DNA was generally associated with higher cell mortality. Using high, medium, and low transfection efficiency conditions determined in Experiment 1, we performed a GRT assay for peroxisome proliferator-activated response element (PPRE) luciferase in MACT and MDBK cells treated with 10nM or 100nM of synthetic Peroxisome Proliferator-activated Receptor β/σ (PPARβ/σ) agonist. The GRT assay was unaffected by poor transfection in MACT cells although the high transfection hampered the possibility of detecting differences between 10 and 100nM of the PPARβ/δ agonist. In MDBK cells, low transfection efficiency ( |
| doi_str_mv | 10.1016/j.gene.2017.05.025 |
| format | Article |
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•Conditions that maximize the transfection of plasmids in bovine cells were tested•Cell types differ substantially in the capacity of being transfected by plasmids•The efficiency of transfection affect the luciferase assay</description><identifier>ISSN: 0378-1119</identifier><identifier>EISSN: 1879-0038</identifier><identifier>DOI: 10.1016/j.gene.2017.05.025</identifier><identifier>PMID: 28501631</identifier><language>eng</language><publisher>Netherlands: Elsevier B.V</publisher><subject>Animals ; Bovine cells ; Cattle ; Cell Line ; Gene reporter assay ; Genes, Reporter ; Green Fluorescent Proteins - genetics ; Green Fluorescent Proteins - metabolism ; MACT ; MDBK ; Microscopy, Fluorescence ; Nutrigenomics ; Plasmids - genetics ; PPAR-beta - genetics ; PPAR-beta - metabolism ; Recombinant Proteins - genetics ; Recombinant Proteins - metabolism ; Transfection ; Transfection - methods</subject><ispartof>Gene, 2017-08, Vol.626, p.200-208</ispartof><rights>2017 Elsevier B.V.</rights><rights>Copyright © 2017 Elsevier B.V. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c422t-41defd8f557cf4146365e052e85ec797388642e8a9531b65134f58b7d4e6a09c3</citedby><cites>FETCH-LOGICAL-c422t-41defd8f557cf4146365e052e85ec797388642e8a9531b65134f58b7d4e6a09c3</cites><orcidid>0000-0002-0674-1892</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.gene.2017.05.025$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,777,781,3537,27905,27906,45976</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/28501631$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Osorio, Johan S.</creatorcontrib><creatorcontrib>Bionaz, Massimo</creatorcontrib><title>Plasmid transfection in bovine cells: Optimization using a realtime monitoring of green fluorescent protein and effect on gene reporter assay</title><title>Gene</title><addtitle>Gene</addtitle><description>Gene reporter technology (GRT) has opened several new avenues for monitoring biological events including the activation of transcription factors, which are central to the study of nutrigenomics. However, this technology relies heavily on the insertion of foreign plasmid DNA into the nuclei of cells (i.e., transfection), which can be very challenging and highly variable among cell types. The objective of this study was to investigate the optimal conditions to generate reliable GRT assay data on bovine immortalized cell lines, Madin Darby Bovine Kidney (MDBK) and bovine mammary epithelial alveolar (MACT) cells. Results are reported for two experiments. In Experiment 1, using 96 well-plate and a robotic inverted fluorescent microscope, we compared transfection efficiency among commercially available transfection reagents (TR) Lipofectamine® 3000 (Lipo3), Lipofectamine® LTX (LipoLTX), and TransIT-X2® (TransX2), three doses of TR (i.e., 0.15, 0.3, and 0.4μL/well), and three doses of Green Fluorescent Protein plasmid DNA (i.e., 10, 25, and 50ng/well). Transfection efficiency and mortality rate were analyzed using CellProfiler software. Transfection efficiency increased until the end of the experiment (20h post-transfection) at which point MACT had greater transfection than MDBK cells (16.3% vs. 2.2%). It is unclear the reason for the low transfection in MDBK cells. Maximal transfection efficiency was obtained with 0.3μL/well of LipoLTX plus 25ng/well of plasmid DNA (ca. 29.5±1.9%) and 0.15μL/well of LipoLTX plus 25ng/well of plasmid DNA (ca. 4.0±0.4%) for MACT and MDBK cells, respectively. The higher amount of TR and DNA was generally associated with higher cell mortality. Using high, medium, and low transfection efficiency conditions determined in Experiment 1, we performed a GRT assay for peroxisome proliferator-activated response element (PPRE) luciferase in MACT and MDBK cells treated with 10nM or 100nM of synthetic Peroxisome Proliferator-activated Receptor β/σ (PPARβ/σ) agonist. The GRT assay was unaffected by poor transfection in MACT cells although the high transfection hampered the possibility of detecting differences between 10 and 100nM of the PPARβ/δ agonist. In MDBK cells, low transfection efficiency (<2.0%) failed to detect any differences with GRT assay. The level of transfection was positively associated with a lower coefficient of variation of GRT data. Overall, our data indicates that results of GRT assays are affected by transfection efficiency and a minimum transfection of 2% is required. Thus, factors such as TR type, TR amount, and DNA plasmid amount need to be optimized for a specific cell type before performing GRT assays.
•Conditions that maximize the transfection of plasmids in bovine cells were tested•Cell types differ substantially in the capacity of being transfected by plasmids•The efficiency of transfection affect the luciferase assay</description><subject>Animals</subject><subject>Bovine cells</subject><subject>Cattle</subject><subject>Cell Line</subject><subject>Gene reporter assay</subject><subject>Genes, Reporter</subject><subject>Green Fluorescent Proteins - genetics</subject><subject>Green Fluorescent Proteins - metabolism</subject><subject>MACT</subject><subject>MDBK</subject><subject>Microscopy, Fluorescence</subject><subject>Nutrigenomics</subject><subject>Plasmids - genetics</subject><subject>PPAR-beta - genetics</subject><subject>PPAR-beta - metabolism</subject><subject>Recombinant Proteins - genetics</subject><subject>Recombinant Proteins - metabolism</subject><subject>Transfection</subject><subject>Transfection - methods</subject><issn>0378-1119</issn><issn>1879-0038</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kcGOFCEQhonRuLOrL-DBcPTSLdU03WC8mI26JpusBz0Thi4mTLphBHqT9R18Z2ln9SgXQvHXV_VXEfIKWAsMhrfH9oAB247B2DLRsk48ITuQo2oY4_Ip2TE-ygYA1AW5zPnI6hGie04uOikqgMOO_Po6m7z4iZZkQnZoi4-B-kD38d4HpBbnOb-jd6fiF__T_Pldsw8HamhCM9cw0iUGX2LaotHRQ0IM1M1rTJgthkJPKRasTBMmim4rQitma74yTjEVTNTkbB5ekGfOzBlfPt5X5Punj9-ub5rbu89frj_cNrbvutL0MKGbpBNitK6HfuCDQCY6lALtqEYu5dDXl1GCw34QwHsn5H6cehwMU5ZfkTdnbu3sx4q56MXnzaoJGNesQSoFwAelqrQ7S22KOSd0-pT8YtKDBqa3Neij3pzobQ2aCV3XUJNeP_LX_YLTv5S_c6-C92cBVpf3HpPO1mOwOPlUx6On6P_H_w3JApt7</recordid><startdate>20170830</startdate><enddate>20170830</enddate><creator>Osorio, Johan S.</creator><creator>Bionaz, Massimo</creator><general>Elsevier B.V</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-0674-1892</orcidid></search><sort><creationdate>20170830</creationdate><title>Plasmid transfection in bovine cells: Optimization using a realtime monitoring of green fluorescent protein and effect on gene reporter assay</title><author>Osorio, Johan S. ; Bionaz, Massimo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c422t-41defd8f557cf4146365e052e85ec797388642e8a9531b65134f58b7d4e6a09c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Animals</topic><topic>Bovine cells</topic><topic>Cattle</topic><topic>Cell Line</topic><topic>Gene reporter assay</topic><topic>Genes, Reporter</topic><topic>Green Fluorescent Proteins - genetics</topic><topic>Green Fluorescent Proteins - metabolism</topic><topic>MACT</topic><topic>MDBK</topic><topic>Microscopy, Fluorescence</topic><topic>Nutrigenomics</topic><topic>Plasmids - genetics</topic><topic>PPAR-beta - genetics</topic><topic>PPAR-beta - metabolism</topic><topic>Recombinant Proteins - genetics</topic><topic>Recombinant Proteins - metabolism</topic><topic>Transfection</topic><topic>Transfection - methods</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Osorio, Johan S.</creatorcontrib><creatorcontrib>Bionaz, Massimo</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Gene</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Osorio, Johan S.</au><au>Bionaz, Massimo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Plasmid transfection in bovine cells: Optimization using a realtime monitoring of green fluorescent protein and effect on gene reporter assay</atitle><jtitle>Gene</jtitle><addtitle>Gene</addtitle><date>2017-08-30</date><risdate>2017</risdate><volume>626</volume><spage>200</spage><epage>208</epage><pages>200-208</pages><issn>0378-1119</issn><eissn>1879-0038</eissn><abstract>Gene reporter technology (GRT) has opened several new avenues for monitoring biological events including the activation of transcription factors, which are central to the study of nutrigenomics. However, this technology relies heavily on the insertion of foreign plasmid DNA into the nuclei of cells (i.e., transfection), which can be very challenging and highly variable among cell types. The objective of this study was to investigate the optimal conditions to generate reliable GRT assay data on bovine immortalized cell lines, Madin Darby Bovine Kidney (MDBK) and bovine mammary epithelial alveolar (MACT) cells. Results are reported for two experiments. In Experiment 1, using 96 well-plate and a robotic inverted fluorescent microscope, we compared transfection efficiency among commercially available transfection reagents (TR) Lipofectamine® 3000 (Lipo3), Lipofectamine® LTX (LipoLTX), and TransIT-X2® (TransX2), three doses of TR (i.e., 0.15, 0.3, and 0.4μL/well), and three doses of Green Fluorescent Protein plasmid DNA (i.e., 10, 25, and 50ng/well). Transfection efficiency and mortality rate were analyzed using CellProfiler software. Transfection efficiency increased until the end of the experiment (20h post-transfection) at which point MACT had greater transfection than MDBK cells (16.3% vs. 2.2%). It is unclear the reason for the low transfection in MDBK cells. Maximal transfection efficiency was obtained with 0.3μL/well of LipoLTX plus 25ng/well of plasmid DNA (ca. 29.5±1.9%) and 0.15μL/well of LipoLTX plus 25ng/well of plasmid DNA (ca. 4.0±0.4%) for MACT and MDBK cells, respectively. The higher amount of TR and DNA was generally associated with higher cell mortality. Using high, medium, and low transfection efficiency conditions determined in Experiment 1, we performed a GRT assay for peroxisome proliferator-activated response element (PPRE) luciferase in MACT and MDBK cells treated with 10nM or 100nM of synthetic Peroxisome Proliferator-activated Receptor β/σ (PPARβ/σ) agonist. The GRT assay was unaffected by poor transfection in MACT cells although the high transfection hampered the possibility of detecting differences between 10 and 100nM of the PPARβ/δ agonist. In MDBK cells, low transfection efficiency (<2.0%) failed to detect any differences with GRT assay. The level of transfection was positively associated with a lower coefficient of variation of GRT data. Overall, our data indicates that results of GRT assays are affected by transfection efficiency and a minimum transfection of 2% is required. Thus, factors such as TR type, TR amount, and DNA plasmid amount need to be optimized for a specific cell type before performing GRT assays.
•Conditions that maximize the transfection of plasmids in bovine cells were tested•Cell types differ substantially in the capacity of being transfected by plasmids•The efficiency of transfection affect the luciferase assay</abstract><cop>Netherlands</cop><pub>Elsevier B.V</pub><pmid>28501631</pmid><doi>10.1016/j.gene.2017.05.025</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0002-0674-1892</orcidid></addata></record> |
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| subjects | Animals Bovine cells Cattle Cell Line Gene reporter assay Genes, Reporter Green Fluorescent Proteins - genetics Green Fluorescent Proteins - metabolism MACT MDBK Microscopy, Fluorescence Nutrigenomics Plasmids - genetics PPAR-beta - genetics PPAR-beta - metabolism Recombinant Proteins - genetics Recombinant Proteins - metabolism Transfection Transfection - methods |
| title | Plasmid transfection in bovine cells: Optimization using a realtime monitoring of green fluorescent protein and effect on gene reporter assay |
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