Difference between revisions of "Part:BBa K1993006"

Revision as of 16:18, 16 October 2016

Luciferase-T2A-dtomato-T2A-hFTH

irefly (Photinus pyralis) Luciferase (Details can be seen from BBa_K1993018) is a kind of oxidative enzyme that produce bioluminescence, which is distinct from a photoprotein. It is able to oxidize luciferin and produce detectable bioluminescence. It’s convenient to observe biological processes, especially allowing for non-invasive observation of cells.

However, the shortage of such technique is also obvious: cost of substrate luciferin is relative expensive and the intensity of measured signal may be affected by various factors which weaken its accuracy. Furthermore, it is not always necessary to observe cells in vivo since in biological researches, in vitro observations are more frequent.

Previously, iGEM07_Ljubljana had already designed the part BBa_I712019, containing the coding sequence of Firefly Luciferase which had fulfilled function of observation in vivo.

In order to improve its function, we constructed a new device enabling us to observe biological processes both in vivo and in vitro. We expanded the previous part by adding two more genes: dTomato (Details can be seen from BBa_K1993020) used for observation in vitro conveniently and easily; hFTH (See details in BBa_K1993021), another protein that could be observed in human body by MRI. (Figure 1) What’s more, in order to make sure the expression of all three proteins, we added a T2A part (Details can be seen from BBa_K1993019) between every two protein coding sequences. (Figure 1)

Figure 1 Constitution of our new device.

Since iGEM had helped us confirm the function of Firefly Luciferase, we only tested the expression of dTomato. See results below (Figure 2, Figure3)

Figure 2 Constitution of our new device.

Figure 3 Constitution of our new device.

As for hFTH, we would test it in non-human primates first, then we may apply our device for MSCs preclinical researches.

Sequence and Features