Difference between revisions of "Team:NCKU Tainan"

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<h3>Abstract</h3>
 
<h3>Abstract</h3>
<p>Chronic Kidney Disease (CKD) is a type of kidney disease where the kidney gradually loses its function over time. The kidney's function is to filter out metabolic wastes and help discard them out of the body. However, when the kidney begins to lose its function, the ability to filter out metabolic wastes, especially uremic toxins also begin to decrease. These metabolic wastes, especially <i>p</i>-Cresol that is considered toxic to humans, begin to accumulate inside the body. <i>p</i>-Cresol accumulation in body is associated with cardiovascular disease in hemodialysis patients and also induces the deterioration of CKD.<br><br>
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<p>Patients suffering from Chronic Kidney disease are unable to filter out uremic toxins inside the body due to a failing kidney. Accumulation of <i>p</i>-Cresol, one of the uremic toxins, have been associated with cardiovascular disease and worsening of Chronic Kidney Disease. To solve this problem, iGEM NCKU will be engineering <i>E. coli</i> Nissle, which is an FDA approved probiotic, to have two specific functions. First, to secrete bacteriocin and reduce the major gut <i>p</i>-Cresol producer, the <i>Clostridium</i> population. Second, to convert excess <i>p</i>-Cresol precursor, tyrosine into a harmless byproduct called <i>p</i>-Coumaric acid rather than <i>p</i>-Cresol. For biosafety concern, we knocked out the <i>yadF</i> gene to ensure <i>E. coli</i> will die when they enter the atmosphere. To provide additional aid in monitoring the level of <i>p</i>-Cresol in these patients’ body, we will also provide an open-source biosensing platform that uses live bacteria to detect specific compounds inside the blood.
We plan to engineer two types of <i>E. coli</i> Nissle, the first one to produce bacteriocin to kill one of the major <i>p</i>-Cresol producers inside the gut, a bacteria called <i>Clostridium difficile</i> and the other to introduce an alternative pathway for tyrosine by adding Tyrosine Ammonia Lyase so that instead of being metabolized into <i>p</i>-Cresol, tyrosine is metabolized into <i>p</i>-Coumaric Acid, which is not dangerous for humans. We also wanted to ensure that the <i>E. coli</i> will not produce tryptophanase to turn tryptophan into indole (which will be metabolized into indoxyl sulfate, another uremic toxin that is dangerous for humans), so we have decided to knock out the tnaA gene, which encodes for tryptophanase.<br><br>
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With Oh My Gut, we will be able to slow down accumulation of the toxic <i>p</i>-Cresol inside the body. Thus allowing patients suffering from CKD to be able to live a more comfortable lifestyle, and to lower the rate of getting cardiovascular disease.
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<h4>Contact Us</h4>
 
<h4>Contact Us</h4>

Revision as of 16:36, 21 August 2019

Oh My Gut (Therapeutics)


Abstract

Patients suffering from Chronic Kidney disease are unable to filter out uremic toxins inside the body due to a failing kidney. Accumulation of p-Cresol, one of the uremic toxins, have been associated with cardiovascular disease and worsening of Chronic Kidney Disease. To solve this problem, iGEM NCKU will be engineering E. coli Nissle, which is an FDA approved probiotic, to have two specific functions. First, to secrete bacteriocin and reduce the major gut p-Cresol producer, the Clostridium population. Second, to convert excess p-Cresol precursor, tyrosine into a harmless byproduct called p-Coumaric acid rather than p-Cresol. For biosafety concern, we knocked out the yadF gene to ensure E. coli will die when they enter the atmosphere. To provide additional aid in monitoring the level of p-Cresol in these patients’ body, we will also provide an open-source biosensing platform that uses live bacteria to detect specific compounds inside the blood.

Contact Us

FB: https://www.facebook.com/igem.ncku/
Email: igem.ncku.tainan@gmail.com
Instagram: https://www.instagram.com/igemncku/?igshid=umwewh0j47m5

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