My Journey Through Synthetic Biology

Hey everyone! I hope you all have had a good Sunday so far. For this week’s blog topic, I wanted to explore something that honestly surprised me when I first learned about it. When we think about how cells work, we usually think in terms of chemistry. Stuff like signals, proteins, and DNA, all of it feels very chemical-based. But cells don’t just communicate using chemicals. They also use electricity.  And once you start looking at biology through that lens, a lot of things start to look very different. Cells Are Electrically Active Every cell in your body maintains a difference in electrical charge across its membrane. This is known as the membrane potential. Basically, the inside of a cell and the outside of a cell have different concentrations of charged particles, like sodium, potassium, and calcium ions. Because of this imbalance, a voltage difference arises. So even at rest, your cells are not neutral. They are electrically active. Not Just Neurons When people hear “electrici...

Hey everyone! It's my fault for missing the usual Sunday posting time for these blogs. My baseball team had its annual spring break trip, and I completely forgot to get something out. However, now that the trip has ended, I have had some time to prepare for “last week’s” blog. Anyway, for this week, I wanted to take a step in a completely different direction from what I’ve been writing about recently. Over the past few blogs, I’ve focused a lot on what cells are and how they decide what to become. But as I thought about it more, I realized there’s another layer of biology that we don’t talk about enough. It’s not just about what life does… but how fast it does it. Because if you really think about it, life runs on a timeline. Cells divide, organisms grow, tissues heal, and eventually everything ages. But none of these processes happen at the same speed across different systems. So that raises a really interesting question: What actually controls the speed of life? Life Doesn’t Run ...

Hey everyone! Welcome back to this week’s blog. Over the past few weeks, I’ve been diving into how cells control their identity. I’ve talked about gene regulation, epigenetics, and even how scientists can reprogram cells or convert them into completely different types. But as I was thinking, all of the topics I’ve talked about the last 4 weeks lead to one bigger question: Before we even try to change a cell’s identity . . . how does it get that identity in the first place? How does a single cell know whether to become a neuron, a muscle cell, or part of your skin? That’s what today’s topic is about, and the process is known as cell fate determination. What Is Cell Fate? Cell fate refers to the final identity a cell adopts. Early in development, cells are much more flexible. They have the potential to become many different types of cells. But as development continues, cells gradually become more specialized. At some point, a cell commits. From that point on, it will follow a specific pa...

Hey everyone, and welcome back to the blog! I hope you guys have all had a good weekend and can sit back, relax, and enjoy today’s topic as you wrap up. Last week I talked about transdifferentiation. In case you didn’t read, transdifferentiation is the idea that one mature cell type can sometimes be converted directly into another. That concept alone already challenges the traditional view that cells are permanently locked into their identities. But scientists eventually discovered something even more surprising. Instead of converting one cell type directly into another, it’s sometimes possible to reset a mature cell back into a stem-like state.  This process is called cellular reprogramming. What Is Cellular Reprogramming? Cellular reprogramming is the process of taking a fully developed cell and reverting it to a pluripotent state, meaning it can develop into many different cell type s. These cells are thus known as induced pluripotent stem cells, or iPS cells. The key idea is th...

Hey everyone, and welcome to blog number 40! It’s been almost a year since I posted my first blog, and it's crazy to see how far I’ve come. For this week’s blog, I thought about the last two weeks of topics. And after writing about gene regulation and epigenetics, I started thinking about a question that sounds almost impossible at first. If cells can specialize into different types during development, do they remain stuck in that specialization forever?  And, for a long time, scientists thought the answer was yes. Once a cell became a muscle cell, neuron, or skin cell, that identity was considered permanent. But modern biology has revealed something much more interesting. In some cases, cells can change their identity, a process called transdifferentiation. What Is Transdifferentiation? Transdifferentiation occurs when one mature cell type directly converts into another mature cell type. Importantly, the cell does not first return to a stem-cell state. Instead, it switches identit...