2015 Journal of tissue engineering and regenerative medicine
* Dewaxed ECM: A simple method for analyzing cell behaviour on decellularized extracellular matrices.
- Decellularization techniques have been used on a wide variety of tissues to create cell-seedable scaffolds for tissue engineering. Finding a suitable decellularization protocol for a certain type of tissue can be laborious, especially when organ perfusion devices are needed. In this study, we report a quick and simple method for comparing decellularization protocols combining the use of paraffin slices and two-dimensional cell cultures. We developed three decellularization protocols for adult murine kidney that yielded decellularized extracellular matrices (ECMs) with varying histological properties. The resulting paraffin-embedded ECM slices were deparaffinized and reseeded with murine embryonic stem cells (mESCs). We analyzed cell attachment four days post seeding via determination of cell numbers, and used quantitative Real-Time PCR 13 days post seeding to measure gene expression levels of two genes associated with renal development, Pax2 and Pou3f3. The three decellularization protocols produced kidney-matrices that showed clearly distinguishable results. We demonstrated that formerly paraffin-embedded decellularized ECMs can effectively influence differentiation of stem cells. This method can be used to identify optimal decellularization protocols for recellularization of three-dimensional tissue-scaffolds with embryonic stem cells and other tissue-specific cell types.
Overview of verb show
The verb show has 12 senses (first 11 from tagged texts)
1. (136) show, demo, exhibit, present, demonstrate -- (give an exhibition of to an interested
audience; "She shows her dogs frequently"; "We will demo the new software in Washington")
2. (63) prove, demonstrate, establish, show, shew -- (establish the validity of something, as by an
example, explanation or experiment; "The experiment demonstrated the instability of the compound";
"The mathematician showed the validity of the conjecture")
3. (57) testify, bear witness, prove, evidence, show -- (provide evidence for; "The blood test
showed that he was the father"; "Her behavior testified to her incompetence")
4. (43) show -- (make visible or noticeable; "She showed her talent for cooking"; "Show me your
etchings, please")
5. (32) picture, depict, render, show -- (show in, or as in, a picture; "This scene depicts country
life"; "the face of the child is rendered with much tenderness in this painting")
6. (24) express, show, evince -- (give expression to; "She showed her disappointment")
7. (24) indicate, point, designate, show -- (indicate a place, direction, person, or thing; either
spatially or figuratively; "I showed the customer the glove section"; "He pointed to the empty
parking space"; "he indicated his opponents")
8. (11) show, show up -- (be or become visible or noticeable; "His good upbringing really shows";
"The dirty side will show")
9. (7) read, register, show, record -- (indicate a certain reading; of gauges and instruments; "The
thermometer showed thirteen degrees below zero"; "The gauge read `empty'")
10. (6) show -- (give evidence of, as of records; "The diary shows his distress that evening")
11. (2) usher, show -- (take (someone) to their seats, as in theaters or auditoriums; "The usher
showed us to our seats")
12. show -- (finish third or better in a horse or dog race; "he bet $2 on number six to show")
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