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- Medical English LInking keywords finder for the PubMed Zipped Archive (ELIZA) -
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268) Suppression of Col I and expression of cartilage markers, including type II collagen, aggrecan and cartilage oligomeric matrix protein (COMP), were assessed at both the transcriptome and protein phenotypic levels.
2015 Journal of tissue engineering and regenerative medicine
* Co-transduction of lentiviral and adenoviral vectors for co-delivery of growth factor and shRNA genes in mesenchymal stem cells-based chondrogenic system.
- Gene delivery takes advantage of cellular mechanisms to express gene products and is an efficient way to deliver them into cells, influencing cellular behaviours and expression patterns. Among the delivery methods, viral vectors are applied due to their high efficiency. Two typical viral vectors for gene delivery include lentiviral vector for integrative transduction and adenoviral vector for transient episomal transduction, respectively. The selection and formulation of proper viral vectors applied to cells can modulate gene expression profiles and further impact the downstream pathways. In this study, recombinant lentiviral and adenoviral vectors were co-transduced in a synovial mesenchymal stem cells (SMSCs)-based articular chondrogenic system by which two transgenes were co-delivered - the gene for transforming growth factor (TGF)β3, to facilitate SMSC chondrogenesis, and the gene for small hairpin RNA (shRNA), targeting the mRNA of type I collagen (Col I) α1 chain to silence Col I expression and minimize fibrocartilage formation. Delivery of either gene could be achieved with either lentiviral or adenoviral vectors. Therefore, co-delivery of the two transgenes via the two types of vectors was performed to determine which combination was optimal for three-dimensional (3D) articular chondrogenesis to construct articular hyaline cartilage tissue. Suppression of Col I and expression of cartilage markers, including type II collagen, aggrecan and cartilage oligomeric matrix protein (COMP), were assessed at both the transcriptome and protein phenotypic levels. It was concluded that the combination of lentiviral-mediated TGFβ3 release and adenoviral-mediated shRNA expression (LV-T + Ad-sh) generally demonstrated optimal efficacy in engineered articular cartilage with SMSCs.
Overview of noun level
The noun level has 8 senses (first 6 from tagged texts)
1. (69) degree, grade, level -- (a position on a scale of intensity or amount or quality; "a
moderate grade of intelligence"; "a high level of care is required"; "it is all a matter of degree")
2. (22) grade, level, tier -- (a relative position or degree of value in a graded group; "lumber of
the highest grade")
3. (15) degree, level, stage, point -- (a specific identifiable position in a continuum or series or
especially in a process; "a remarkable degree of frankness"; "at what stage are the social
sciences?")
4. (5) level -- (height above ground; "the water reached ankle level"; "the pictures were at the
same level")
5. (1) level, spirit level -- (indicator that establishes the horizontal when a bubble is centered
in a tube of liquid)
6. (1) horizontal surface, level -- (a flat surface at right angles to a plumb line; "park the car
on the level")
7. level, layer, stratum -- (an abstract place usually conceived as having depth; "a good actor
communicates on several levels"; "a simile has at least two layers of meaning"; "the mind functions
on many strata simultaneously")
8. floor, level, storey, story -- (a structure consisting of a room or set of rooms at a single
position along a vertical scale; "what level is the office on?")
Overview of verb level
The verb level has 6 senses (first 3 from tagged texts)
1. (4) level -- (aim at; "level criticism or charges at somebody")
2. (1) level, raze, rase, dismantle, tear down, take down, pull down -- (tear down so as to make
flat with the ground; "The building was levelled")
3. (1) flush, level, even out, even -- (make level or straight; "level the ground")
4. charge, level, point -- (direct into a position for use; "point a gun"; "He charged his weapon at
me")
5. level -- (talk frankly with; lay it on the line; "I have to level with you")
6. level, level off -- (become level or even; "The ground levelled off")
--- WordNet end ---