Emerging biotechnologies — A/L Biology

What must I remember about Emerging biotechnologies?

• Emerging biotechnologies are revolutionizing medicine, agriculture, forensics, and industrial environmental sustainability through precision molecular and computational tools.
• CRISPR-Cas9 Gene Editing: Revolutionary molecular tool derived from bacterial adaptive immune systems against bacteriophages; uses a synthetic single guide RNA (sgRNA) to target specific genomic sequences, where Cas9 endonuclease introduces precise double-strand DNA breaks to achieve gene knockouts or site-directed insertions.
• Bioinformatics & High-Throughput Genomics: Interdisciplinary domain combining computer science, statistics, and molecular biology to manage, align, and analyze massive genomic and proteomic datasets (Next-Generation Sequencing NGS, BLAST algorithm, NCBI GenBank database).
• Stem Cell Technology & Regenerative Medicine: Pluripotent stem cells (Embryonic Stem Cells - ESCs from blastocyst inner cell mass; Induced Pluripotent Stem Cells - iPSCs reprogrammed from adult somatic fibroblasts using Yamanaka transcription factors) offer potential to regenerate damaged tissues and treat neurodegenerative diseases.
• Synthetic Biology & Nanobiotechnology: Designing novel biological systems and artificial genetic circuits not found in nature; Nanobiotechnology engineers nanoscale biomaterials (<100 nm) such as targeted magnetic nanoparticles and liposomes for localized cancer chemotherapy drug delivery.

Test yourself (1 minute)

1. CRISPR-Cas9 Nobel significance

   Awarded the 2020 Nobel Prize in Chemistry (Emmanuelle Charpentier and Jennifer Doudna) for developing a tool that makes genome editing as simple and programmable as a word processor cut-and-paste function.

2. Yamanaka Factors (iPSCs)

   Shinya Yamanaka demonstrated that introducing four transcription factors (Oct4, Sox2, Klf4, c-Myc) into adult differentiated mouse/human somatic fibroblasts reprograms them back into embryonic-like induced Pluripotent Stem Cells (iPSCs), bypassing ethical controversies associated with blastocyst destruction.

3. Bioethics & Gene Drives

   Emerging technologies raise profound ethical considerations: germline genome editing creates inheritable genetic alterations in unborn generations; ecological gene drives engineered via CRISPR can theoretically force altered genes through entire wild populations, risking irreversible ecosystem consequences.

Practise Emerging biotechnologies questions today

Source: NIE G.C.E. (A/L) Biology Syllabus & Resource Book, Unit 10

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Where does Emerging biotechnologies fit in the syllabus?

Year 2 · Term 3