Bridging Biology and Technology: How Systems Thinking Shaped My Career

August 24th, 2025 by Dr. Sai Bhavani

What do stock markets, forest ecosystems and living cells have in common? They're all complex adaptive systems where small changes can trigger massive, unpredictable consequences.

Think about it: One trader's decision can build or crash a market. One fallen tree can reshape an entire forest. And one cellular conversation gone wrong can start a tumour.

It was this realization that reshaped my career — and the way I approach science.

From Molecules to Networks

My research journey began with cancer systems biology, where complexity is the rule, not the exception. Traditional reductionist biology taught us to zoom into a single molecule, a pathway, or a mutation. But cancer is not a story of one mutation gone rogue. It is the result of network of networks — signalling cascades, feedback loops, and cell–cell interactions constantly rewiring themselves in response to internal and external cues. In my work on TGFβ-induced epithelial to mesenchymal transition (EMT), I witnessed this truth first-hand. The transition of epithelial cells into mesenchymal states cannot be explained by a single gene or protein. It emerges from the interconnected feedback between transcription factors (the cellular switches that turn genes on and/or off), signalling molecules, and epigenetic regulators.

Systems thinking — the art of seeing connections, patterns, and emergent properties rather than isolated fragments — has shaped not just the way I do science, but the way I think as a researcher. It was this holistic approach that gave me the language to study this complexity. By integrating network visualization and analysis, mathematical modelling, I learned to see cancer not as static snapshot but as a dynamic, evolving system. These system level models allowed me to capture this emergent plasticity, showing how cancer cells toggle between states of migration, invasion, and quiescence.

When my Bench Became a Working Station

Bridging biology with technology was not an optional detour in my career; it was essential. While I was comfortable with coding from my master's program, applying these computational skills to biological complexity was fascinating and an entirely different challenge. Instead of pipettes and centrifuges, my bench soon became a laptop glowing with networks and its dynamics. Developing mathematical models that mimic how cells make decisions over time, building regulatory networks from experimental data became my new experimental toolkit. But systems thinking reassured me: just as biological systems are interconnected, so are skills. Learning to code was not abandoning biology — it was extending my ability to ask new questions.

I discovered that mathematical modelling could do what no single experiment could: test hundreds of what-if scenarios, perturbations, and feedback conditions insilico, guiding experimental collaborators toward the most promising hypotheses. In this sense, technology became the bridge, allowing me to traverse between theory and experiment, mechanism and medicine.

Lessons From Feedback Loops: Why Systems Thinking Matters

The heart of systems thinking is feedback. Biology thrives on feedback loops — positive ones amplify signals; negative ones stabilize systems.

The same applied to my research. While mentoring students, I found that their questions pushed me to clarify my own models. When I worked with experimental literature, the data challenged my assumptions, forcing me to refine my simulations. Discrepancies between model predictions and experimental observations became goldmines of insight — pointing me toward missing interactions, overlooked pathways, or emergent behaviours I hadn't captured. This iterative loop of hypothesis, model, validation, and revision mirrors the very logic and dynamics of biological systems.

This perspective has trained me to look beyond immediate outputs — a graph, a model, a publication — and ask how each piece fits into the larger narrative of understanding cancer progression. As I move toward postdoctoral research and beyond, I see my career as part of a wider system. My goal is not simply to build models, but to integrate them with clinical and experimental data, bridging silos in pursuit of holistic understanding.

More than a scientific method, systems thinking reshaped me as a researcher – making me more adaptable, collaborative, and forward-looking. It also taught me humility. Our role as scientists is not to claim absolute answers, but to map landscapes of possibility, identify points of leverage, and illuminate paths for intervention.

Closing Thoughts

As I reflect on my own path, I realize my career itself as a system — shaped by networks of mentors, feedback loops of learning, and emergent opportunities. In complex systems like cancer, uncertainty is not a flaw but a feature. When I look at cancer today, I no longer see chaos. I see patterns in motion, a complex system whose logic we are slowly beginning to decode.

To study cancer is to dance with this complexity. And like Donella Meadows once said:

“We can’t control systems or figure them out. But we can dance with them.”

And that, ultimately, is the art I hope to keep practicing — dancing with complexity, guided by the rhythms of systems thinking.

Bio: I am a Cancer Systems Biologist passionate about uncovering the hidden logic of disease progression. My PhD explored TGFβ-driven epithelial–mesenchymal transition (EMT) and its role in metastasis, combining disease map curation, network modelling, and dynamic simulations (mathematical modelling) to reveal how regulators like p53, SNAIL, ZEB, and miRNAs shape cell fate decisions. I build computational frameworks that integrate molecular interactions, feedback loops, and system-level properties to understand EMT, multistability, and therapeutic vulnerabilities. Beyond my doctoral work, I am interested in exploring interdependencies across cellular processes, tumour–microenvironment interactions, and emergent disease dynamics. I am driven to translate these insights into predictive models and precision strategies that bridge biology, computation, and medicine.

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