Modern Genetics & Molecular Breakthroughs

Q: What did Casgevy become in 2023-2024, marking a historic medical milestone?

First CRISPR-based gene therapy approved for human use. Casgevy became the first-ever CRISPR-based therapy approved for human use, gaining UK approval in November 2023 and FDA approval in December 2023 for treating sickle cell disease. During 2024, it received approval across the UK, US, EU, Bahrain, Saudi Arabia, and Canada. This landmark achievement represents the culmination of decades of gene-editing research and opens doors to treating genetic diseases at their source.

Q: What AI-designed genome editor was unveiled in 2024 by Profluent Bio?

OpenCRISPR-1. OpenCRISPR-1, developed by Profluent Bio, is the world's first AI-designed genome editor, created entirely using large language models. The neural network designed a novel CRISPR-Cas enzyme from scratch, and laboratory tests showed it achieves genome editing activity comparable to standard SpCas9 but with improved specificity and reduced off-target effects. This represents a paradigm shift in biotechnology by using AI to discover entirely new biological machinery.

Q: Which protein causes prion diseases by inducing misfolding of normal proteins?

Prion protein (PrP). Prion diseases are caused by misfolded prion protein (PrP), which uniquely contains no nucleic acids (DNA or RNA) and induces normal prion proteins to adopt the same misfolded state. When the normal alpha-helical PrP structure converts to a beta-sheet configuration, it triggers an exponential cascade where misfolded proteins recruit and misfold additional normal proteins. These aggregating sheets form small chains causing cell death, ultimately leading to brain lesions and degeneration.

Q: What fatal prion disease of cattle emerged in the UK in 1986 due to contaminated feed?

Bovine spongiform encephalopathy. Bovine spongiform encephalopathy (BSE), commonly known as mad cow disease, is an incurable, always-fatal neurodegenerative disease that emerged in the UK in 1986. Cattle became infected after being fed meat and bone meal containing remains of other BSE-infected cattle or scrapie-infected sheep. BSE cases spread globally before feed bans halted transmission. Variant Creutzfeldt-Jakob disease (vCJD) in humans was later presumed caused by consuming contaminated beef products.

Q: What revolutionary vaccine technology teaches cells to produce their own spike protein?

mRNA vaccine. mRNA vaccines work by delivering genetic instructions (mRNA) that teach cells to produce a specific viral protein—typically the spike protein on the virus surface. The cell machinery translates the mRNA to create the harmless spike protein, which triggers immune recognition and antibody production without any actual virus being present. After the protein is made, cells break down the mRNA and remove it as waste. Pfizer and Moderna's COVID-19 vaccines achieved 95% efficacy using this groundbreaking approach.

Q: What protein family do tardigrades produce that protects DNA from radiation damage?

Tardigrade damage suppressor (Dsup) protein. Tardigrades produce the tardigrade damage suppressor (Dsup) protein, which binds to nucleosomes and protects chromosomes from reactive hydroxyl radicals that cause DNA damage. Tardigrades also produce heat shock proteins (Hsp40 and Hsp70) that prevent harmful protein aggregation during stress. In 2024, University of North Carolina researchers showed that when human cells were treated with tardigrade repair proteins, they became better equipped to resist radiation damage.

Question 1

What did Casgevy become in 2023-2024, marking a historic medical milestone?

Accepted Answer

First CRISPR-based gene therapy approved for human use

Answer

First AI-designed antibiotic

Answer

First personalized cancer vaccine

Answer

First synthetic organ transplant

Question 2

What AI-designed genome editor was unveiled in 2024 by Profluent Bio?

Accepted Answer

OpenCRISPR-1

Answer

SpCas9-Plus

Answer

GenEdit-AI

Answer

CRISPR-2.0

Question 3

In November 2024, what cardiovascular disease breakthrough reduced LDL cholesterol by up to 59% using CRISPR?

Accepted Answer

One-time CRISPR-Cas9 gene-editing therapy for lipid disorders

Answer

Heart attack prevention trial

Answer

Stroke reversal therapy

Answer

Plaque dissolution therapy

Question 4

What is horizontal gene transfer's role in the rapid spread of antibiotic resistance?

Accepted Answer

It allows bacteria to share resistance genes across species via plasmids

Answer

It prevents resistance genes from mutating

Answer

It inactivates antibiotic molecules

Answer

It strengthens bacterial cell walls

Question 5

Which protein causes prion diseases by inducing misfolding of normal proteins?

Accepted Answer

Prion protein (PrP)

Answer

Amyloid-beta

Answer

Tau protein

Answer

Alpha-synuclein

Question 6

What fatal prion disease of cattle emerged in the UK in 1986 due to contaminated feed?

Accepted Answer

Bovine spongiform encephalopathy

Answer

Scrapie

Answer

Chronic wasting disease

Answer

Creutzfeldt-Jakob disease

Question 7

What revolutionary vaccine technology teaches cells to produce their own spike protein?

Accepted Answer

mRNA vaccine

Answer

Live attenuated vaccine

Answer

Adenovirus vector vaccine

Answer

Protein subunit vaccine

Question 8

Why did nitrogen mustards gain medical attention as anticancer agents in the 1940s?

Accepted Answer

They were chemical warfare agents tested for therapeutic potential

Answer

They were discovered by accident in a hospital

Answer

They were derived from natural plant compounds

Answer

They were designed specifically for cancer treatment

Question 9

How do tumors trigger the formation of new blood vessels required for growth beyond 1-2 millimeters?

Accepted Answer

By secreting growth factors like VEGF in response to low oxygen

Answer

By producing pain signals

Answer

By creating inflammatory molecules

Answer

By blocking immune cells

Question 10

What protein family do tardigrades produce that protects DNA from radiation damage?

Accepted Answer

Tardigrade damage suppressor (Dsup) protein

Answer

Histones

Answer

Telomerase

Answer

Proteasome

Modern Genetics & Molecular Breakthroughs

What did Casgevy become in 2023-2024, marking a historic medical milestone?

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Modern Genetics & Molecular Breakthroughs