Overview

From September 2024 to August 2025, we established continuous feedback loops with policy experts, academics, industry professionals, and peer iGEM teams. Each interaction changed our design, experiments, modeling, and implementation plan for the whole project. This page is dedicated to documenting why we engaged each stakeholder, what we learned, and how the project was modified as a result.

Concept model

Through the process of brainstorming and developing our project, we have already come to understand that continuous reflection on real-world incentives and social responsibility makes our project more practical. Therefore, we present our approach to the Integrated Human Practices, which is a dynamic feedback cycle that runs through our entire iGEM project.

We began by identifying assumptions and obstacles in our design, ranging from cultural conditions to PVA hydrogel biocarriers to local and global laws. Next, we engaged a diverse range of stakeholders, including policy experts, academic researchers, industry partners, and peer iGEM teams, to gather feedback on our ideas and assumptions and identify potential blind spots. From these discussions, we gained critical insights into both technical feasibility (such as constraints in carboxysome efficiency or gel permeability) and broader societal context (such as Taiwan’s Net Zero policy framework and industrial adoption barriers). Each piece of feedback was then translated directly into modifications in the project, which range from updating experimental protocols and refining proof-of-concept metrics to reframing our target users. Importantly, we documented every consultation and integrated the ideas into our project, ensuring that our models, experiments, and human practices strategy remained adaptive and evolving rather than static. This iterative cycle was repeated ten times throughout the year, ultimately aligning our project more closely with the needs of both science and society.

Figure 1

Figure 1. Concept model

Specialists

Conceptualisation

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Mr. Cheng Secretary, Environmental Quality Protection Foundation
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Dr. Hintze Researcher, Universität Bonn
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Dr. Price & Dr. Sara Rottet Professor, Australian National University

Modeling

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Dr. Mangan Professor, Northwestern University

Experiment

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Dr. Lan Professor, National Yang Ming Chiao Tung University
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Dr. Matsumura Professor, Japan Advanced Institute of Science and Technology
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Dr. Wu Professor, National Taiwan University

Education

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Ms. Principe Kang Chiao International School: Xiugang Campus

Entrepreneurship

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Ms. Tori Kang Chiao International School: Xiugang Campus
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Dr. Liu Kang Chiao International School: Xiugang Campus
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Ms. Billones Kang Chiao International School: Xiugang Campus
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Mr. Lou Personal communication
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Dr. Chu Chimera Bioscience Inc.
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Mr. Chuang Chroma ATE Inc.

Public Engagement

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Cali-mod iGEM Team Personal Communication
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NTU iGEM conference KCISLK-Taiwan, Personal communication
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NIS Kazakhstan iGEM Team Personal communication
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Louisville iGEM Team Personal communication

Survey

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Survey sent to specialists

Survey Response

In addition to meeting with professors to introduce our project mechanisms in detail, we designed a survey to interview two other professors about the feasibility of our project plan and product design. We invited Dr. Chen Shao-Kuan (Dr. Chen), an associate professor from the National Chengchi University who was a colleague of our instructor, and Dr. Pei-Wen Chu (Dr. Chu), a principal research scientist from Chimera Bioscience Inc., who had over 8 years of experience, for advice regarding our conceptual experimental design and product. With a strong research interest in genetics, Dr. Chen provided insight into ensuring reliable gene expression, while Dr. Chu assisted us with troubleshooting DNA-based systems.

In the survey, we explained how we planned to modify cyanobacteria to increase HCO3- uptake by expressing two fusion genes, cmpAB and cmpCD, which would accelerate complex formation and facilitate HCO3- transport. By enhancing the efficiency of carbon fixation, we expected to foster photosynthesis inside cyanobacteria. Regarding the fusion genes, we inquired whether our team’s strategy for cloning cmpAB and cmpCD was reasonable and practical, and whether it would be beneficial to divide the fusion genes into cmpA, cmpB, cmpC, and cmpD. Apart from that, we inquired whether our planned product —a chamber containing PVA hydrogel with genetically engineered cyanobacteria embedded inside —was a feasible idea for development and industrial use.

We learned from Dr. Chen that cloning cmpAB and cmpCD was a reasonable approach. He also reminded us that, despite combining fusion genes decreasing the failure rate of assembly, it might lead to the dysfunction of individual genes because it disrupts conformational dynamics and alters membrane localization. However, previous studies have shown that a cmpCD fusion gene creates a BCT1 that exhibits the highest HCO3- intake rate. Inspired by such results, we decided that our project should not only fuse cmpC and cmpD, but also cmpA and cmpB (Rottet 2024). This approach accelerated the speed of complex formation, thereby facilitating faster HCO3- transport. The resulting polypeptides also supported a more rapid and stable assembly of the transporter complex, ultimately increasing HCO3- uptake in the engineered cyanobacterial system.

On the other hand, Dr. Chu confirmed that our conceptual experimental design was feasible and mentioned that creating fusion genes was beneficial, provided we considered their disadvantages. Furthermore, she reminded us to explain how other unwanted products were dealt with. We conducted research and discovered that one sustainable method of disposing of cyanobacteria is allowing them to return to the ecosystem. Through products such as dietary supplements, S. elongatus PCC 7942 has been shown to benefit the immune and digestive systems of marine animals, including the shrimp Litopenaeus vannamei. After undergoing detoxification and purification processes, such as plasmid curing, our cyanobacteria, which once contributed to carbon sequestration, can now return to nature and provide their nutritional value and health benefits to other marine organisms (Medeiros 2022).

Regarding our product, the carbon fixation chamber, both professors agreed that our plan was feasible, as existing research demonstrates that photosynthetic microorganisms can survive and fix carbon dioxide when embedded in PVA hydrogel. Additionally, Dr. Chu suggested that we focus on the target audience’s needs when designing the chamber size, as distinct environments require different chamber sizes and levels of effectiveness.

References

Cali-mod iGEM team, personal communication, June 12, 2025

Cheng, personal communication, April 1, 2025

Cheng, personal communication, April 1, 2025

Hintze, personal communication, April 10, 2025

Louisville iGEM Team, personal communication, September 13, 2025

Mangan, personal communication, April 12, 2025

Matsumura, personal communication, May 29, 2025

Medeiros, L., Azevedo, R., Riet, J. et al. Dietary supplementation of Synechococcus elongatus PCC 7942 expressing a heterologous β-glucosidase on the expression of genes related to digestion, immune system, and antioxidant defenses of the shrimp Litopenaeus vannamei. J Appl Phycol 34, 2089–2098 (2022). https://doi.org/10.1007/s10811-022-02748-5

NIS Kazakhstan iGEM team, personal communication, August 30, 2025

Price, S. Rottet, personal communication, May 22, 2025

Rottet, S., (2024). Engineering the cyanobacterial ATP-driven BCT1 bicarbonate transporter for functional targeting to C3 plant chloroplasts. Journal of experimental botany, 75(16), 4926–4943. https://doi.org/10.1093/jxb/erae234