ArticleTransgenic research2009
Functional characterization of a tobacco matrix attachment region-mediated enhancement of transgene expression.
Article in Transgenic research, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
7 citing papers in PubMed, 18 citations in OpenAlex.
- The M4 insulator, the TM2 matrix attachment region, and the double copy of the heavy chain gene contribute to the enhanced accumulation of the PHB-01 antibody in tobacco plants.Transgenic research · 2020Article
- Review
- Chimeric 3' flanking regions strongly enhance gene expression in plants.Plant biotechnology journal · 2018Article
- Effects of a petunia scaffold/matrix attachment region on copy number dependency and stability of transgene expression in Nicotiana tabacum.Transgenic research · 2016Article
- 5' and 3' Untranslated Regions Strongly Enhance Performance of Geminiviral Replicons in Nicotiana benthamiana Leaves.Frontiers in plant science · 2016Article
- A chimeric cry8Ea1 gene flanked by MARs efficiently controls Holotrichia parallela.Plant cell reports · 2013Article
- TM6, a novel nuclear matrix attachment region, enhances its flanking gene expression through influencing their chromatin structure.Molecules and cells · 2013Article
Corrections and comments
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
TM2, a new matrix attachment region (MAR) isolated from tobacco, increases transgene expression in plants. We have carried out a more detailed analysis of the DNA elements in TM2 with the aim of improving its effect on transcription activation. Our study of the location effect of individual MARs on the expression of the adjacent 35S:gusA cassette indicated that the TM2 functions in a bidirectional manner, with the 5'-MAR being more efficient in enhancing beta-glucuronidase expression than the 3'-MAR. The influence of 5'-MAR on different linked mini-promoters in transgenic tobacco cells suggested that the role of TM2 depends on the basic expression of the transgenes. Deletion analysis of one topo II site and two unwinding sites together with one T-box revealed that all these sites contribute most (93.3%) of the transcription activation mediated from the TM2 sequence. Additionally, micrococcal nuclease accessibility of the 35S promoter region can be strengthened by linked TM2, suggesting that the TM2 mediates the spreading of nucleosome opening. Taken together, our results reveal that the TM2 mediates a more open and accessible chromatin DNA structure for promoter-dependent active transcription, which in turn enhances transgene expression.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.