Gene technology, industry by industry

Reading DNA got cheap. Writing it is what changes an industry.

We write about the practical end of genetics: the vectors that carry a corrected gene into a cell, the enzymes that replace a chemical step in a factory, the traits that change how a field is sprayed, and the laws that decide which of those reach anyone at all.

  • Five sectors, one guide each
  • Named techniques, named regulators
  • Trade-offs written out, not smoothed over
  • No advice, no products, no affiliations
Abstract illustration of a double helix unwinding into grid lines representing laboratory, farm and factory processes
Gene technology sits behind medicines, seeds, enzymes and monitoring tools that rarely announce themselves.

Five guides

Each guide takes one sector, explains the mechanism in ordinary words, names the organisations that matter and sets out where the arguments actually sit.

01
  • FieldCell and gene therapy
  • ToolsAAV, lentivirus, CRISPR, CAR-T
  • OversightFDA CBER, EMA CAT, MHRA

Medicine and therapeutics

How Luxturna, Zolgensma and Casgevy differ in what they do to a genome, why adeno-associated virus has a cargo limit, what lymphodepletion means before a CAR-T infusion, and why one-off treatments break the way health systems normally pay for medicines.

02
  • FieldCrops, livestock, food
  • TraitsInsect resistance, virus resistance, quality
  • OversightUSDA APHIS, EFSA, FSANZ

Agriculture and food

Bt cotton and the refuge strategy, the Rainbow papaya and ringspot virus, Golden Rice and provitamin A, the non-browning mushroom, AquAdvantage salmon, and why the European Union regulates the process while the United States regulates the product.

03
  • FieldManufacturing and materials
  • HostsE. coli, yeasts, filamentous fungi
  • OutputsEnzymes, proteins, fuels, polymers

Industrial biotechnology

Fermentation-produced chymosin in cheese, recombinant insulin as the first of its kind, detergent proteases and feed phytase, soy leghemoglobin in plant-based burgers, and the three numbers a fermentation plant lives by: titre, rate and yield.

04
  • FieldEcology and conservation
  • ApproachesGene drives, sterile males, genomics
  • OversightCBD, Cartagena Protocol

Environment and conservation

Oxitec's engineered Aedes aegypti, Target Malaria's staged work on Anopheles gambiae, blight-tolerant American chestnut carrying a wheat gene, environmental DNA surveys, and why reversibility is the hardest question in the field.

05
  • FieldLaw, ethics, ownership
  • FrameworksDirective 2001/18/EC, Precision Breeding Act
  • ThemesBiosafety, consent, benefit sharing

Rules, ethics and ownership

The Court of Justice ruling that pulled gene editing into the EU's GMO rules, the UK Precision Breeding Act, the US Coordinated Framework, the Cartagena and Nagoya Protocols, CRISPR patent disputes, and the line between somatic and heritable editing.

The words that keep coming up

We try to define terms where they appear, but a handful run through every guide, and it helps to have them in one place before you start.

Recombinant DNA
DNA assembled from more than one source and put into a living host, which is how insulin, chymosin and most industrial enzymes are made.
CRISPR-Cas9
A guide RNA steers a nuclease to a chosen DNA sequence and cuts it. The cell's own repair machinery then does the editing, which is why outcomes vary.
Base and prime editing
Later methods that chemically convert or rewrite short stretches of DNA without a full double-strand break, trading breadth for precision.
Gene drive
An engineered element that copies itself onto the partner chromosome so it spreads through a wild population faster than ordinary inheritance allows.

Two ideas sit underneath all five guides. The first is that the laboratory step is rarely the bottleneck: delivery, manufacture, field performance and approval decide whether anything ships. The second is that the same technique is governed completely differently depending on which industry it lands in — an edit in a tomato, a mosquito and a patient meet three separate legal regimes, often in the same country.

Start with medicine