Team:Hong Kong HKUST/hp/article/kr

From 2013.igem.org

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Out of the four universities CBNU has been most actively participating in the competition. It was the first Korean university and also one of the first Asian universities to participate. They first entered the iGEM competition in 2006, but did not participate again until 2009. They have participated every subsequent year. Korea University joined the competition in 2009 and KAIST in 2010, and both have competed regularly since. UNIST competed in 2011 and did not return the following year ("Synthetic biology based," ).<br><br>
Out of the four universities CBNU has been most actively participating in the competition. It was the first Korean university and also one of the first Asian universities to participate. They first entered the iGEM competition in 2006, but did not participate again until 2009. They have participated every subsequent year. Korea University joined the competition in 2009 and KAIST in 2010, and both have competed regularly since. UNIST competed in 2011 and did not return the following year ("Synthetic biology based," ).<br><br>
The following table summarizes the achievements of Korean universities in the iGEM competition:
The following table summarizes the achievements of Korean universities in the iGEM competition:
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<h5>Design</h5>
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After researching low power draw pumps, we decided on the Bartels Mikrotechnik mp6 Micropump. The pump uses two
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  extremely small actuators which increase the flow of the fluid with a greater frequency supplied to the pump.
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Since the flow rates are so small, the pressure head associated with the filters does not exceed the 600 mbar
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maximum. A mp6-EVA electronic controller was also purchased from Bartels which allows external tuning of flow rate.
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The original controller can only be supplied with at 2.5-5 V voltage source, so a step-down was necessary to be
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compatible with the battery inside the device.
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<h5>Material</h5>
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Contamination and corrosion are always a concern in continuous operation. A benefit of the mp6 micropump is that
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all surface in contact with the fluid is PPSU (polyphenylsulfone) , a heat and chemical resistant plastic.
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<h5>Assembly</h5>
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The micropumps were received in June to perform autoclaving testing on the parts. In October, after the remainder
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of the device was assembled, the micro pumps were put online in the device and confirmed the ability to supply
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continuous flow through the entire device including the two filters, mixer, reactor and piping.
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Revision as of 13:08, 29 August 2013

Korea

Overview
In this country profile, information of synthetic biology in South Korea is compiled from different on-line sources such as government website, official government annual reports, news articles, and reviews. Searches were conducted in both English and Korean media. This country profile contains information about different aspects of synthetic biology in Korea, including regulation, research, people, perception, and organization. However as specific classification of work under the moniker of ‘synthetic biology’ is still uncommon in South Korea, wherever a specific aspect of information cannot be found described under synthetic biology, we have obtained the same information under the wider field of ‘biotechnology’. Information about biotechnology may be inferred to see the general growth trend of synthetic biology and its future development. In fact, biotechnology research institutes and companies are the ones that are most likely to adopt the synthetic biology approach (Hranueli, 2013).

In general, synthetic biology is a small but rapidly growing field in Korea. This trend is guided by a comprehensive plan called the Bio-Vision 2016. In 2006, the Korean government announced the Bio-Vision 2016 as a 10 year plan aimed at developing Korea’s biotechnology capabilities into making the nation a leader in the field. Needless to say, this has also allowed synthetic biology to gain a foothold in Korea (Cho, 2006)
Synbio Map
The SynBio Map identifies and locates companies, universities, research institutions, laboratories and other centers across the globe that are active in synthetic biology research ("Synthetic biology project:," ). It is a good tool to compare the trend of synthetic biology all round the world. This map was created at the Synthetic Biology Project at the Woodrow Wilson International Center for Scholars.

On the map, 5 entries are located in South Korea. Three of them, two universities and one company, are near or in Daejeon, and two universities are located in Ulsan. This map may not depict an accurate picture of synthetic biology in Korea because some institutes such as Korea Research Institute of Bioscience and Biotechnology are not listed in the map. This may be due to the fact that information for the map is gathered from official websites, scientific literature, government reports, and journals etc. If the available information was not in English, it could have been hard for the organization to compile the data ("Synthetic biology project:," ).

The following table summarizes the information compiled in the SynBio Map:

Participation in the iGEM Competition
Not many Korean universities have been participating in the iGEM competition. From 2004 to 2012, only four Korean universities participated in the competition. Considering that there are 203 universities listed in the Korean Council for University Education website, 4 out of 203 universities is in fact a small proportion ("Synthetic biology based," )

The four universities are Chungbuk National University (CBNU), Korea University, Korea Advanced Institute of Technology (KAIST) , Ulsan National Institute of Science and Technology. Sogang University registered in 2012, but withdrew from the competition ("Synthetic biology based," ).

Out of the four universities CBNU has been most actively participating in the competition. It was the first Korean university and also one of the first Asian universities to participate. They first entered the iGEM competition in 2006, but did not participate again until 2009. They have participated every subsequent year. Korea University joined the competition in 2009 and KAIST in 2010, and both have competed regularly since. UNIST competed in 2011 and did not return the following year ("Synthetic biology based," ).

The following table summarizes the achievements of Korean universities in the iGEM competition:
Biotechnology Industry
A survey about biotechnology market in Korea published by the Ministry of Commerce, Industry and Energy, and Korea Biotechnology Industry Organization was available on-line. The statistics provided in the review may not relate directly to synthetic biology, but could provide some insight on the potential development of synthetic biology considering the fact that synthetic biology has wide applications in biotechnology industries (Hranueli, 2013).

The report states that in 2011, out of 921 biotechnology businesses that responded to the survey, the three main biotechnology industries were biopharmaceutical industry (274), biochemistry industry (196), and biofood industry (206). Other biotechnology industries include bioenvironmental industry, bioenergy industry, and bioelectronics industry etc ("Domestic biotechnology industry," 2013).

The report also suggests that biotechnology business in Korea is growing. In 2011, around 35,600 people were employed in the biotechnology industry and within that group around 22,100 people were researchers. This number represents a 3.4% increase compared to the number of researchers (21357) in 2010. Also, the total market value of biotechnology industry in 2009 was around US $4.0 billion, growing annually at 17.6%. In 2011, the total market value had risen to US $5.5 billion ("Domestic biotechnology industry," 2013).
Biotechnology Industry Funding
We present information of biotechnology funding as a whole. ‘Bio-Vision 2016’, the second Korean national framework plan for the promotion of biotechnology, is currently under way. Under this plan the Korean government will provide around US $9.7 billion in 2012 to 2016 for expanding local biotechnology industries. This pledge was reaffirmed by the prime minister during the Bio-Korea 2012 conference held in Seoul. The plan also mentions that the government should increase support for the development of synthetic biology. Additional details, however, are not provided in the framework. The Ministry of Health and Welfare mentioned that the government would eagerly support the development of biotechnology in terms of policies and international collaboration (Lee, 2012).

In addition, private funding in 2011 was round US$ 1.3 billion. This value represents a 26.6% increase compared to the US$ 1.02 billion generated in 2010. 89.9% of the total fund is from the three major biotechnology industries in Korea which are biopharmaceutical (63.8%), biochemistry (13%), and biofood industry (12.5%) ("Domestic biotechnology industry," 2013).

Regulations for Synthetic Biology
In South Korea there is no specific set of regulations designated just for synthetic biology. There is, however, an act called the “Biotechnology Support Act” that can promote the lawful development of synthetic biology in Korea. The purpose of this Act is to effectively support biotechnology in Korea by laying the foundation of biotechnology research ultimately to contribute to the sound development of the national economy. This Act states that the Korean government will make efforts to promote international cooperation in biotechnology researches, promote joint researches within Korea, take policy measures to support biotechnology research, and collect information for technology development("Biotechnology support act," 2008).

There is also a law called “Transfer of Living Modified Organisms Law (LMO Law) that can partially regulate the bio-safety aspect of synthetic biology. LMO Law was first written in 2001 by the Department of Knowledge and Economy under the Korean government. The term Living Modified Organism defined in the Law is very comprehensive and can cover organisms made in synthetic biology research. This law states that before an extensive application of a research, the possible environmental effect of the LMO need to be predicted. Because synthetic biology, however, often produces novel synthetic microorganisms, the environmental effects of the novel microorganism are hard to predict. Modification of LMO Law or a new law, therefore, is required to encompass the whole aspect of synthetic biology (Kim, 2010).

Also, Korea does not have a method for estimating the environmental effects that the LMO can cause and therefore, rely largely on foreign investigations. Such a method will be needed if South Korea begins to develop more drastically altered LMOs (Kim, 2010).

Only one Korean company, Bioneer, is listed in the SynBio map inventory. Bioneer has gene synthesizing technology that is the foundation for synthetic biology ("Synthetic biology project:,").
perception of Synthetic Biology

Academic synthetic biology projects are gaining serious traction in Korea, with only 2 such projects in 2009 increasing to around 200 project in 2013. More scientists are also being involved in synthetic biology research("National science and," ).

The Korean government has regularly supported new technologies that integrate different disciplines. As an example of this kind of technology, synthetic biology has received extensive support and promotion by the government as outlined by the Bio-Vision 2016 plan. Korea’s government will continue to increase investments in biotechnology and expand the technology and its market (Kim, 2010).

No study specifically regarding the perception of synthetic biology by the public has been conducting in Korea. It is therefore hard to judge how prevalent the concept of synthetic biology is to the general public. Sections of the Bio-Vision 2016 plan mention that efforts will be put into promoting the safe application of biotechnology. Meanwhile other events that help the general public understand synthetic biology include the 4th Bio-safety and Bio-industry Debate Competition for high school students in Korea, held by the Korea Biosafety Clearing House on April 15th of this year. One of the debates discussed the topic of synthetic biology being used to further the efforts of biotechnology. 436 high school students all around Korea participated in the competition (KBCH, 2013).

A 26-item questionnaire survey conducted in 2010 asked high school students designed to measure students’ perception in biotechnology revealed that students had a generally positive toward the use of biotechnology on crops, and microbes, but were wary about the use of biotechnology products on animals and humans. This study also revealed that male students were more accepting biotechnology than female students (Song & Shim, 2010).

Requirements
The potentiostat is used to provide and maintain a voltage potential between the working and reference electrode of the reactors. It also interfaces with the counting electrode to provide a measurement for its current flow. This measurement is recorded and sent to an Android device.
Inputs
Reference Electrode (RE)
The reference electrode is one of three electrodes in reactor solution. This electrode measures the potential of the solution, which is mostly water with salts and nutrients. The potential measured by this electrode sets the reference potential for the rest of the potentiostat.
Working Electrode (WE)
The working electrode sets the voltage differential for the reactor solution and causes current to flow through the reactor.. The target potential of the WE depends on the bacteria in the reactor. The calibrated potential should create favorable living conditions for the bacteria. For our Shewanella, we must provide 0.2 - 0.3V above the reference electrode voltage.
Counting Electrode (CE)
To counterbalance the current injected into the solution, the CE acts as a current sink. As bacteria in the reactor grow, they will generate a different amount of current that will be measured by the CE. The generated current, in our case, is between 0 and ~100 uA.
Power Supply
We power the system with the 12V battery, and by using an op-amp voltage follower and resistive voltage divider, we define a voltage reference for the system. In this, ground is 6V, so 12V is 6V above ground and 0V is -6V below ground. The +/- 6V references are used as the sources for the electrical system.
Electrical Design
We designed this system using operational amplifiers (op-amps), due to their robustness in different operating conditions in comparison to a passive resistor and capacitor based system; we used LM353 integrated circuits to provide these op-amps. This system into four parts: desired voltage differential specification, reference electrode voltage measurement, working electrode output, and counting electrode current measurement. We base this design from a freely available potentiostat design created by Elliot Friedman and Alexander Hartoto, available here.
As seen in the above diagram, the system uses various op-amp configurations to accomplish our task. The desired voltage differential is set using a resistive voltage divider and a potentiometer, configurable for different voltage requirements through potentiometer tuning. This differential is added to the reading from the reference electrode using a voltage summing op-amp. Another op-amp is connected to the reference electrode to act as a voltage follower. This voltage is then inverted using an additional inverting op-amp, with equal feedback resistances to provide no gain. This lets us set our potential. Lastly, we measure the current from the counting electrode by connecting it to two op-amps configured as a non-inverting current to voltage converter. This provides our voltage output for the microcontroller, in the range of 0 to 5 volts.
Microcontroller Design
The measurement from the electrical design is fed into an Arduino megaADK. This is an analog voltage measurement, so it is converted using an onboard analog-to-digital converter and stored in the device. Using serial communications, the measurement is transmitted via a USB interface to an Android device. We sample this measurement at 125 kHz, constantly sending new information serially.
Material Selection
Our components for this system were chosen based on the types of inputs we would receive from the electrodes and the operating range of the device - we also needed to make sure our output could interface with the microcontroller. Since the required voltage differential is specific to the engineered strain of bacteria present in the reactor, we made our voltage divider using a potentiometer to provide variable resistance. This can be calibrated based on the requirements of the device. In order to choose the conversion factor between the voltage output and measured counting electrode current, we also had to depend upon the current range of the reactors, expected to be from 0 to 60 micro amperes. We chose a megaADK Arduino development board with an onboard Atmel ATmega2560 microcontroller to process this voltage input. This board provides us an easy Android interface for sending data and includes a 10-bit analog to digital converter, which gives us a measurement resolution of 97.7 nano amperes.

Software

Requirements
The method of data transfer had to be easily fixed, and supportive of some long distance information transfer. The first criterion is due to the nature of the biosensor. Since the device would ideally be outside braving the weathers for six months, we need it to be quickly replaced. Furthermore, the biosensor had to be able to transmit data; it would be inconvenient if someone had to frequently go to the device to check the voltage readings.
Design
An Android phone was chosen as the best fit for the project as it satisfied both requirements. Notably, it achieved the distance criterion well – as long as a cell tower was nearby, the information on the phone could be accessed from anywhere with an internet connection. Furthermore, there existed a wide range of support for Android development that did not exist for other platforms. These included tools such as the Apache API, a light weight server interface that allowed the project to run more smoothly. A server was also designed to partner with the Android device. The server was to use a MySQL table for data retrieval and access - this allowed for easy testing and modularity.
Components
The choice of materials were generally the industry standard – we used the HTTP protocol to facilitate data transfer and MySQL to store the data. For the phone, Samsung’s Galaxy Nexus was chosen mostly because of the third-party support found for the phone concerning the Android to Arduino communication.
Assembly
The code for the Android device was written in Java using a Microbridge project as the method of communication between the phone and Arduino. The basic Apache API was used to transfer data to a web server. For the server, the code was written in PHP and tested with WAMPserver, a development tool that allowed local hosting of the MySQL tables.