Synthetic biology

Scientists use science to build new things.

They can change how living things work. They can even redesign them to be useful.

This can help us make new food. It can also help us make medicine. Some scientists even use computers to design life. This work helps us learn about our world. It is a very big and exciting job.

Synthetic biology is a special way of doing science.

Scientists use rules from engineering to study living things. Engineering is the study of how to build tools and machines. In this field, people build new biological parts. They can also redesign parts found in nature.

This work helps solve many big problems. For example, it can help make better food or medicine. It can even help make new materials. Scientists use many tools to do this. Some use biochemistry, which is the study of chemicals in life. Others use genetic engineering to change DNA. DNA is the material that carries instructions for life.

In the past, scientists learned how DNA works. In 2003, Tom Knight made BioBricks. These are standard DNA parts that people can use. Scientists can combine these parts to make new systems. Some even use computers to design life. In 2020, scientists made xenobots. These are tiny organisms made from frog cells. They were designed using AI, which is computer intelligence.

These new tools help us understand our world better.

Synthetic biology is a wide field of science that looks at living systems.

It uses engineering rules to build new biological parts or devices. Scientists also use these rules to redesign systems already found in nature. This work combines many different areas of study. These include things like biochemistry and molecular biology. It even uses electrical and computer engineering. The goal is to make living things that work in new ways. These new systems can process information or make new materials.

This science works by designing biological modules and machines. Scientists look at how to build parts that are predictable and strong. They use a method called systems design to do this. This means they plan how many small parts work together. One idea involves using a molecular assembler. This would be a tiny tool based on things like the ribosome.

Some scientists act as "re-writers." They try to rebuild natural systems from the ground up. This helps them understand how life works by making it simpler. They can even use computers to design these systems.

People have been studying these ideas for a long time. Stéphane Leduc used the term synthetic biology in 1910. Later, in 1944, Oswald Avery showed that DNA is what makes up genes. In 1953, Francis Crick and James Watson found the structure of DNA. By 1973, scientists achieved the first molecular cloning of DNA. This event is often called the dawn of synthetic biology. In 1988, Mullis and others published a way to grow DNA quickly. This is called the polymerase chain reaction, or PCR. This tool made it much easier to build new DNA.

There are many important dates and discoveries in this field. In 2000, researchers made biological clocks using genes in E. coli cells. Tom Knight invented BioBrick plasmids in 2003. These are standard DNA parts that scientists use often. In 2010, a synthetic bacterial genome called M. mycoides JCVI-syn1.0 was published. In 2012, the CRISPR-Cas9 technology was shared to help edit genes.

In 2020, scientists created xenobots using frog cells and AI. These tiny organisms can even gather cells to make more xenobots. In 2024, the Nobel Prize was awarded for work involving these tools.

This science connects to many things we see every day. It helps us understand how to make better medicine and vaccines. For example, RNA therapeutics are used to keep people healthy. These work quickly and do not change a person's own DNA. Synthetic biology also helps with making food and energy.

Some companies even work on ways to decompose plastic using enzymes. By using nature's power, scientists hope to solve big problems in farming. They want to help maintain human health and protect our environment.

Synthetic biology, often called SynBio, is a multidisciplinary field of science. It focuses on the study and redesign of living systems and organisms. Scientists in this field apply engineering principles to biological components. They aim to develop new biological parts, devices, and systems. They also work to redesign existing systems found in nature. This field is not a single subject but a combination of many. It includes disciplines like biochemistry, molecular biology, and genetic engineering. It also draws from material science, biophysics, and even electrical engineering.

The mechanism of synthetic biology involves designing biological modules and machines. Researchers aim to produce predictable and robust systems with novel functionalities. These functionalities are often things that do not exist in nature. To achieve this, scientists use a method called systems design. This approach applies the engineering paradigm to biological systems. One theoretical idea involves using a molecular assembler. This would be a tool based on biomolecular systems like the ribosome.

By building from the ground up, scientists can create biological circuits. These circuits allow cells to process information or manipulate chemicals.

There are several distinct categories within this scientific field. Bioengineering is a major subfield that focuses on creating new metabolic and regulatory pathways. It differs from traditional genetic engineering, which usually only introduces a single transgene. Bioengineers use standardized parts to create entire signaling pathways. Synthetic genomics is another category that focuses on forming organisms with manufactured genomes. Scientists in this area aim to transplant complete genomes into living cells. This can reprogram a cell's metabolism to perform entirely new functions. Other categories include protocell synthetic biology, unconventional molecular biology, and in silico techniques.

The history of these ideas spans over a century. The term "synthetic biology" was first used by Stéphane Leduc in 1910. In 1944, Oswald Avery proved that DNA is the material of genes. Later, in 1953, Francis Crick and James Watson published the structure of DNA. A major turning point occurred in 1973 with the first molecular cloning of DNA. In 1988, the polymerase chain reaction, or PCR, was published by Mullis and others. This tool made it much easier to amplify and assemble DNA. In 2003, Tom Knight invented BioBrick plasmids, which are standardized DNA parts.

Significant milestones have shaped the modern era of the field. In 2010, researchers published the first synthetic bacterial genome, M. mycoides JCVI-syn1.0. In 2012, the discovery of CRISPR-Cas9 technology revolutionized gene editing. This allowed for much easier programming of DNA cleavage. In 2020, scientists created xenobots, which are programmable organisms made from frog cells. By 2021, researchers found that these xenobots could self-replicate by gathering loose cells. In 2019, scientists even reported a new form of viable life by reducing the number of codons in a bacterial genome. These numbers and breakthroughs show how rapidly the field is advancing.

The economic and practical significance of synthetic biology is growing. In 2016, more than 350 companies in 40 countries were active in the field. These companies had an estimated net worth of $3.9 billion in the global market. The field is expanding because DNA synthesis and sequencing costs are decreasing. Researchers are using nature's power to solve problems in agriculture and manufacturing. They are also working on ways to create enzymes that can decompose plastic. This helps address environmental issues using biological tools.

Finally, synthetic biology connects to many broader scientific and medical topics. One major connection is to RNA therapeutics, such as vaccines. RNA-based systems are often considered safer because they do not integrate into the host genome. They also act more rapidly than DNA systems because they do not require transcription. This technology is essential for personalized medicine and gene therapy. Synthetic biology also intersects with artificial intelligence. For example, the AlphaFold2 AI model helps predict the structures of millions of proteins. This helps researchers understand antibiotic resistance and other complex biological systems.