Bacteria are widely used in recombinant DNA technology for several key reasons:
1. Simplicity and ease of manipulation: - Bacteria have a relatively simple genetic makeup compared to eukaryotes, making it easier to manipulate their DNA.
- They have a single circular chromosome and lack the complex regulatory mechanisms found in eukaryotic cells.
2. Rapid growth and high yield: - As bactérias se reproduzem muito rapidamente através da fissão binária, permitindo a produção em larga escala de proteínas recombinantes ou outros produtos em pouco tempo.
- Their high growth rate allows for efficient and economical production.
3. Well-characterized genetics: - Many bacterial species have been extensively studied, and their genetic systems are well understood.
- Os pesquisadores desenvolveram uma vasta gama de ferramentas e técnicas para manipular o DNA bacteriano, incluindo plasmídeos, enzimas de restrição e vetores de clonagem de genes.
4. Ability to express foreign genes: - Bacteria can be engineered to express foreign genes introduced through recombinant DNA technology.
- Their protein synthesis machinery can translate and fold the foreign proteins into functional forms.
5. Custo-efetividade: - Bacteria are relatively inexpensive to culture and maintain, making them a cost-effective system for producing recombinant proteins.
6. Safety: - Muitas cepas bacterianas usadas na tecnologia de DNA recombinante são consideradas seguras para uso laboratorial, embora o manuseio e a contenção cuidadosos sejam cruciais.
Examples of bacterial uses in recombinant DNA technology: *
Produção de insulina: Bacteria are used to produce human insulin, a protein crucial for diabetes treatment.
*
Produção de hormônios de crescimento: Recombinant bacteria can produce human growth hormone, used to treat growth deficiencies.
* Vacinas
: Bacterial systems are used to produce vaccines against various diseases, including hepatitis B and pertussis.
*
Enzyme production: Bacteria are engineered to produce enzymes with industrial applications, such as proteases and lipases.
No geral, a combinação de simplicidade, crescimento rápido, genética bem caracterizada e a capacidade de expressar genes estranhos tornam as bactérias uma ferramenta inestimável para a tecnologia de DNA recombinante. They have revolutionized the production of pharmaceuticals, diagnostics, and various other products.