Ethically, the field faces scrutiny regarding CRISPR-Cas9 gene editing, pricing of life-saving biologics (e.g., insulin price hikes), and the use of animal cells in production. The 2018 case of He Jiankui, who created gene-edited babies, highlighted the global need for strict ethical oversight.
The backbone of pharmaceutical biotechnology lies in recombinant DNA (rDNA) technology. Before 1982, human insulin was extracted from pigs and cattle, leading to allergic reactions and supply issues. With rDNA, scientists inserted the human insulin gene into E. coli bacteria, turning them into microscopic factories. This breakthrough paved the way for other recombinant proteins, including human growth hormone (hGH), erythropoietin (EPO) for anemia, and clotting factors for hemophilia. pharmaceutical biotechnology pv publication pdf
Biologics pose unique regulatory hurdles. The FDA’s Center for Biologics Evaluation and Research (CBER) oversees these products. Unlike generic small molecules, there is no such thing as a true "generic biologic"; instead, we have biosimilars , which are highly similar but not identical due to the inherent variability of living systems. Before 1982, human insulin was extracted from pigs
The COVID-19 pandemic showcased the power of mRNA biotechnology. Pfizer-BioNTech and Moderna did not inject a virus or protein; they injected mRNA instructions that told human cells to produce the spike protein, triggering immunity. This platform allows for vaccine development in under 48 hours. Future applications include mRNA cancer vaccines tailored to an individual patient’s tumor mutations, as well as in vivo CAR-T cell generation. This breakthrough paved the way for other recombinant
Pharmaceutical biotechnology recently achieved its most ambitious goal: gene therapy. Instead of administering a protein, biotech now delivers the gene that codes for that protein. Using viral vectors (engineered, harmless viruses), drugs like Luxturna (for inherited blindness) and Zolgensma (for spinal muscular atrophy) correct the underlying genetic defect. While these drugs cost upwards of $2 million per patient, they offer a potential one-time cure, dramatically reducing lifetime healthcare costs.