Difference between revisions of "Part:BBa K2666001"
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=== I. Part BBa K2666001 : Function === | === I. Part BBa K2666001 : Function === | ||
| − | The Montpellier iGEM team 2018 designed a construction that produce LL-37, an antimicrobial peptide from human macrophages and leukocytes in Lactobacillus jensenii | + | The Montpellier iGEM team 2018 designed a construction that produce LL-37, an antimicrobial peptide from human macrophages and leukocytes in Lactobacillus jensenii [http://2018.igem.org/Team:Montpellier/Peptides] |
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For that, we used the promoter RpsU, a L.jensenii specific strong promoter [1]. This RpsU sequence also contains the putative sequence for the RBS. Figure 1 illustrates the detailed design. | For that, we used the promoter RpsU, a L.jensenii specific strong promoter [1]. This RpsU sequence also contains the putative sequence for the RBS. Figure 1 illustrates the detailed design. | ||
Revision as of 08:04, 10 October 2018
Contents
I. Part BBa K2666001 : Function
The Montpellier iGEM team 2018 designed a construction that produce LL-37, an antimicrobial peptide from human macrophages and leukocytes in Lactobacillus jensenii [http://2018.igem.org/Team:Montpellier/Peptides]
[{{fullurl:Template:(More information)|}} ]
For that, we used the promoter RpsU, a L.jensenii specific strong promoter [1]. This RpsU sequence also contains the putative sequence for the RBS. Figure 1 illustrates the detailed design.
Figure 1 : Construct design. The sequence that encode LL-37 with a strong promoter RpsU.
LL-37 has shown effect in vivo in mice. Females naturally cycling to estrous phase failed to become pregnant when in injected with LL-37 and sperm. LL-37 also showed in vitro effect on human sperm which makes it a very good potential peptide for contraception. [2]
II. Proof of function
III. Design Considerations
We used a strong promoter to produce a lot of LL-37. Lactobacillus is not supposed to be sensitive to LL-37 (reference).
We added spacers to all of our constructions to unable easier use of the sequence and separation of the different genes of the sequences. We used two Terminators to our sequences :BBa_B0014 & BBa_B0015 to ensure the stopping of the transcription.
Reference:
[1] Bao, Sujin, et al. "Distribution dynamics of recombinant Lactobacillus in the gastrointestinal tract of neonatal rats." PloS one 8.3 (2013): e60007.
[2] Tanphaichitr, Nongnuj et al. 2018. Potential Use of Antimicrobial Peptides as Vaginal Spermicides/Microbicides. Pharmaceuticals 9.1 (2016): 13.