Team:SCU China

Team:SCU China - 2017.igem.org

Rhythmic Production of Melatonin in E.coli

Nowadays, insomnia and circadian rhythm disorders are increasingly plaguing individuals' daily life. According to NIH reports, around 50-70 million U.S. adults are suffering from sleep insufficiency and poor-quality sleep. The circadian rhythm in human is predominantly under the regulation of melatonin, a hormone produced by pineal gland periodically. This year we want to use engineered E.coli to mimic this process in human. We propose to construct a melatonin biosynthesis pathway in E.coli to produce melatonin, while simultaneously couple this process with periodically-optimized repressilator, a synthetic genetic oscillator with higher precision, with the intention to render melatonin production resemble mammalian periodicity in E.coli.

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Rhythmic Production of Melatonin in E.coli
SCU_China

1. Our human practices were integrated to the whole process, which made us complete the project better.

2. We improved two previous part BBa_I13521 and BBa_E2050 and our BioBrick work well in lab condition.

3. Our experimental design based on modelling results, such as the optimal proportioning of synthetase.

4. Engineered E.coli is cultured with artificial gastrointestinal juices and gut flora to validate the substantial integration and survival condition based on the consideration for better safety and higher efficiency.

1. There are 4 new BioBrick parts in our project as follow, BBa_K2276001, BBa_K2276003, BBa_K2276004 and BBa_K2206005.

2. We collaborated with SCU-WestChina and SiCAU-China in experiments and human practice, received key assists from Peking University and offered wiki design suggestions to team Purdue.

3. We consulted experts of China Food and Drug Administration and West China Sleeping Centre for both experimental designs and safety problems. Also, we collected and analyzed convincing datas from our survey.