Team:Calgary/Human Practices



OVERVIEW

Vitamin A Deficiency and the Creation of Oviita


Vitamin A deficiency has long been a problem in vulnerable and developing areas. The topic has not been addressed by the media and larger organizations since the early 2000s. However, it turns out that vitamin A deficiency cases have reached a seven-year high, and numbers are expected to rise (Baker, 2019). Providing a solution to Vitamin A deficiency would not only prevent childhood blindness but also improve immunity to other diseases. Oviita’s vision is to see no child blinded by vitamin A deficiency. For this to happen, we wanted to make informed decisions. After all, many organizations have invested millions of dollars to alleviate this problem.

To fully understand the problem and design a plan to address it, our team utilized iGEM Calgary’s human-centered design process which leads to integration with key stakeholders and end users throughout the project lifecycle.

Initially we thought that supplementing beta-carotene alone would solve the problem. Little did we know that Vitamin A Deficiency was caused by multiple gaps/problems with compounding effects.



UNDERSTANDING THE PROBLEM

Stakeholder Interviews

Before investing our energies in doing wet lab and dry lab work, we wanted to verify that Vitamin A Deficiency is still a problem. We talked to people who work directly with vitamin A deficiency: nutritionists, public health specialists, anthropologists, and doctors. We created conversation about the problems with past attempts in vitamin A supplementation programs, what the supplementation process is like, the current status of vitamin A internationally and countries they are in, and the bottlenecks in the supplementation process.




What did we discover?

Current State of Vitamin A Deficiency

Our HP contacts who work in the Philippines, Ghana, India, and Burkina Faso told us that VAD still affects a significant percentage of the children in their countries. The government plays a big role in promotion of growing beta-carotene biofortified crops and supplying vitamin A (retinol) capsules. However, these efforts are not enough.


Ineffective Delivery

Past approaches such as the Golden Rice project and biofortification of other staple crops through genetic engineering did not work well because plants need months to grow and farmers would suffer economic losses because the biofortified crops can contaminate their non-fortified crops and prevent its export. Additionally, vitamin A supplementation through gel capsules is only done biannually. Health and nutritional organizations allot for more than 100% coverage of supplements, but social workers and mobile nurses are not always able to reach rural areas.


Lack of Sustainability

Many institutions from western companies have provided VAD-vulnerable countries with resources to combat the problem, but we learned that they don’t work well because these institutions do not leave infrastructure for the people to work with. As a result, their efforts go in vain as soon as they leave the country and stop providing resources. Many of these efforts also do not consider the culture and available resources in the country they are helping. Lastly, the money has to come from someone’s pocket. Even with cheap vitamin A capsule prices, transportation and distribution costs can still be economically straining. Most importantly, the people we are working with do not want external aid enforced on them. They want something sustainable-- something THEY can have ownership and accountability of.



IDEATE

Propose Solutions

Having identified key problems in the vitamin A supplementation distribution, our team started brainstorming ideas. Upon careful consideration of our stakeholders’ needs, we decided on using a chassis producing β-carotene targeted for consumption like nutritional yeast. Upon conducting literature review, we decided on working with Rhodotorula toruloides, a red oleaginous yeast which naturally produces β-carotene. Then, we would genetically modify it with a series of cellulases to use agricultural waste as a feedstock. A light-inducible kill switch would also be added as a biocontainment measure. For added safety features and optimized growth conditions, our yeast would be grown in a laboratory bioreactor. With these attributes, the yeast could be grown in a community center, clinics, or dispensaries-- improving vitamin coverage and delivery in a sustainable manner.

To learn more about these solutions, please click the buttons below.


Verifying Need

With a proposal on hand, we talked to our end users to verify its need and discuss its implementation in their workplace and communities. We talked to healthcare workers and nutritionists in rural areas in South Asia, Sub-Saharan Africa, and Southeast Asia which are among the most VAD-vulnerable areas.



The feedback we received from our stakeholders was that a bioreactor capable of producing a steady supply of vitamin-A producing yeast would be much better than waiting for biannual distribution of the vitamin. Omega-3 fatty acids are an emerging essential nutrient with numerous health benefits which make its production favourable.

Dr. Sanou and Lourlin mentioned that vitamin A supplementation is not always effective because children's intestines are often perforated by worms and parasites due to lack of proper footwear and access to clean water in these areas. As a result, deworming using Albendazole is coupled with the vitamin’s supplementation. Because of this, our team decided to change the production of omega-3 to that of thymol, an anthelmintic compound found in thyme leaves.

In places like the Philippines, India, Burkina Faso, and Uganda, people would have events like “nutrition week” or “micronutrient week” dedicated to diagnosing VAD, deworming using Albendazole, supplying vitamin A, and also informing parents and children about the importance of incorporating vitamin A in the diet. Dharamwati thinks that having a communal bioreactor would be better than individual ones for homes as it would be built with shared investment, and encourage community participation especially in events such as nutrition week.

Asides from these initiatives, we were surprised to hear that diagnostic methods for VAD are based on height, sight, and academic performance tests rather than laboratory testing. This explains the sparse data on Vitamin A deficiency by the WHO which dates back to 2005. From Dr. Sanou’s Public Health perspective, these tests are inaccurate.

We talked to Tyler Warnock, a medical school student who has worked with Healthy Child Uganda and Mama na Mtoto in Tanzania about his experience with global health work in Uganda, and how we could apply them towards our bioreactor and project implementation. He cautioned that making a difference is all about relationship building, and its absence would make our project implementation very difficult and “ unethical”. Many western people come in to collect data and leave without infrastructure, causing a divide between them and the local people.

With unethical implementation and inaccurate testing in mind, our team worked on the Randle Cell Testing Device which detects vitamin A levels in the blood. To learn more about the Randi Cell Testing Device and Thymol Production, please click the buttons below.


We also talked to Dr. Samir Gupta, one of the co-founders of the Global Pathway School in India which was developed by Canadians to help Indians students living below the poverty-line. We learned about their application of the 15-point plan which includes feeding the students meals in school, and supplying vitamin A and Albendazole for deworming. We asked him how he and his team successfully built this community without being culturally insensitive. He said that it is important to employ local people in leadership roles and positions they could confide to with economic and social problems. For the implementation of our yeast, he suggested schools for distribution since kids would be in one location being fed.

Our HP contacts agree that having microenterprises linked to Oviita would make our project more self-sustaining as it would train the local people while providing empowerment and employment, especially to women. Taking Dr. Gupta’s feedback in consideration, we partnered with the West Nile Youth Empowerment Centre (WNYEC) in Uganda which empowers youth through cultural and entrepreneurial training across eight different regions in Uganda. After explaining our project and its microenterprise opportunities, Nadia Iddi, the programs officer of WNYEC, said that this would be a great idea as it would create employment opportunities in their area. As long as our team provided them the initial training, they would also train their community members in how to operate our bioreactor, creating products like yoghurt fortified with Oviita, and educate people with the importance of vitamin A in the diet. Once the proposed training model is set in place, our partnership would expand to nearby health clinics around the area. Nadia informed us that the general perception for genetically modified organisms in Uganda is negative, but that should not be a threat with its monetary and health benefits. Over the next year, we will be working closely with them to see how we could best integrate the Oviita system tailored to their resources and culture.



DESIGN SOLUTIONS

Expert Consultations

CELLULASE ENGINEERING

In order to provide a sustainable, community-based solution, we plan to genetically modify Rhodosporidium toruloides, an oleaginous yeast that naturally produces beta-carotene and lipids, to be more robust and resource-efficient. By modifying the yeast to produce cellulase, it can then use common agricultural waste products as an energy source for synthesizing its oil. It can then be eaten as a vitamin A supplement. The yeast strain, while naturally safe and non-pathogenic, will also be genetically modified to include a kill switch for bio-containment, and optimized for oil production.



THYMOL PRODUCTION

In order to provide a sustainable, community-based solution, we plan to genetically modify Rhodosporidium toruloides, an oleaginous yeast that naturally produces beta-carotene and lipids, to be more robust and resource-efficient. By modifying the yeast to produce cellulase, it can then use common agricultural waste products as an energy source for synthesizing its oil. It can then be eaten as a vitamin A supplement. The yeast strain, while naturally safe and non-pathogenic, will also be genetically modified to include a kill switch for bio-containment, and optimized for oil production.



BIOCONTAINMENT MEASURES

In order to provide a sustainable, community-based solution, we plan to genetically modify Rhodosporidium toruloides, an oleaginous yeast that naturally produces beta-carotene and lipids, to be more robust and resource-efficient. By modifying the yeast to produce cellulase, it can then use common agricultural waste products as an energy source for synthesizing its oil. It can then be eaten as a vitamin A supplement. The yeast strain, while naturally safe and non-pathogenic, will also be genetically modified to include a kill switch for bio-containment, and optimized for oil production.

BIOREACTOR DESIGN

In order to provide a sustainable, community-based solution, we plan to genetically modify Rhodosporidium toruloides, an oleaginous yeast that naturally produces beta-carotene and lipids, to be more robust and resource-efficient. By modifying the yeast to produce cellulase, it can then use common agricultural waste products as an energy source for synthesizing its oil. It can then be eaten as a vitamin A supplement. The yeast strain, while naturally safe and non-pathogenic, will also be genetically modified to include a kill switch for bio-containment, and optimized for oil production.

RANDLE CELL TESTING DEVICE

In order to provide a sustainable, community-based solution, we plan to genetically modify Rhodosporidium toruloides, an oleaginous yeast that naturally produces beta-carotene and lipids, to be more robust and resource-efficient. By modifying the yeast to produce cellulase, it can then use common agricultural waste products as an energy source for synthesizing its oil. It can then be eaten as a vitamin A supplement. The yeast strain, while naturally safe and non-pathogenic, will also be genetically modified to include a kill switch for bio-containment, and optimized for oil production.


Evaluate & Iterate on Design

Further Improving Our Design

FACULTY TALK

In order to provide a sustainable, community-based solution, we plan to genetically modify Rhodosporidium toruloides, an oleaginous yeast that naturally produces beta-carotene and lipids, to be more robust and resource-efficient. By modifying the yeast to produce cellulase, it can then use common agricultural waste products as an energy source for synthesizing its oil. It can then be eaten as a vitamin A supplement. The yeast strain, while naturally safe and non-pathogenic, will also be genetically modified to include a kill switch for bio-containment, and optimized for oil production.

Julygem

In order to provide a sustainable, community-based solution, we plan to genetically modify Rhodosporidium toruloides, an oleaginous yeast that naturally produces beta-carotene and lipids, to be more robust and resource-efficient. By modifying the yeast to produce cellulase, it can then use common agricultural waste products as an energy source for synthesizing its oil. It can then be eaten as a vitamin A supplement. The yeast strain, while naturally safe and non-pathogenic, will also be genetically modified to include a kill switch for bio-containment, and optimized for oil production.

iGEM Concordia's Mini Jamboree

In order to provide a sustainable, community-based solution, we plan to genetically modify Rhodosporidium toruloides, an oleaginous yeast that naturally produces beta-carotene and lipids, to be more robust and resource-efficient. By modifying the yeast to produce cellulase, it can then use common agricultural waste products as an energy source for synthesizing its oil. It can then be eaten as a vitamin A supplement. The yeast strain, while naturally safe and non-pathogenic, will also be genetically modified to include a kill switch for bio-containment, and optimized for oil production.

cGEM

In order to provide a sustainable, community-based solution, we plan to genetically modify Rhodosporidium toruloides, an oleaginous yeast that naturally produces beta-carotene and lipids, to be more robust and resource-efficient. By modifying the yeast to produce cellulase, it can then use common agricultural waste products as an energy source for synthesizing its oil. It can then be eaten as a vitamin A supplement. The yeast strain, while naturally safe and non-pathogenic, will also be genetically modified to include a kill switch for bio-containment, and optimized for oil production.