Gene Therapy Approaches

Active learning works well here because the abstract nature of gene therapy—with its complex in vivo and ex vivo methods—becomes tangible when students physically model vector delivery and debate delivery trade-offs. Engaging in role-plays, simulations, and structured discussions helps Year 13 students confront misconceptions and internalize the trade-offs between precision and safety.

• Year 13
• Biology
• 3 activities
• 45 min–60 min

Case Study Analysis

⏱ 60 min·Small Groups

Format Name: Gene Therapy Strategy Debate

Divide students into groups to research and debate the pros and cons of in vivo versus ex vivo gene therapy for a specific genetic disorder. Each group presents their case, followed by a Q&A session.

Prepare & details

Compare the advantages and disadvantages of in vivo and ex vivo gene therapy approaches.

Facilitation Tip: During the Debate Carousel, assign clear roles (e.g., patient advocate, immunologist, bioengineer) to ensure every student contributes substantively.

Setup: Groups at tables with case materials

Materials: Case study packet (3-5 pages), Analysis framework worksheet, Presentation template

• Analyze
• Evaluate
• Create
• Decision-Making
• Self-Management

Case Study Analysis

⏱ 45 min·Individual

Format Name: Vector Design Challenge

Students design a hypothetical viral vector for gene therapy, considering target cell specificity, payload capacity, and safety features. They present their designs and justify their choices.

Prepare & details

Analyze the challenges associated with delivering therapeutic genes to target cells.

Facilitation Tip: In the Jigsaw Expert Groups, provide each student with a data table or graph to analyze before regrouping, so peer teaching is evidence-driven.

Setup: Groups at tables with case materials

Materials: Case study packet (3-5 pages), Analysis framework worksheet, Presentation template

• Analyze
• Evaluate
• Create
• Decision-Making
• Self-Management

Case Study Analysis

⏱ 50 min·Pairs

Format Name: Case Study Analysis

Provide students with case studies of patients who have undergone gene therapy. They analyze the treatment approach, outcomes, and any complications, discussing the effectiveness and challenges.

Prepare & details

Evaluate the potential and limitations of gene therapy for treating genetic diseases.

Facilitation Tip: For the Model Building activity, prepare colored pipe cleaners and plastic containers beforehand so students can quickly build 3D vectors and cells without delay.

Setup: Groups at tables with case materials

Materials: Case study packet (3-5 pages), Analysis framework worksheet, Presentation template

• Analyze
• Evaluate
• Create
• Decision-Making
• Self-Management

Teaching This Topic

Experienced teachers approach this topic by treating gene therapy as a decision-making challenge rather than pure content delivery. They leverage active methods to surface students’ initial biases—like assuming viral vectors are universally safe—then use simulations and case studies to challenge those ideas with data. It’s important to avoid over-simplifying trade-offs; instead, model nuanced thinking by asking students to weigh delivery efficiency against safety and scalability in each scenario.

What to Expect

Successful learning looks like students confidently comparing in vivo and ex vivo approaches, identifying delivery challenges, and justifying vector choices with evidence from simulations and case studies. By the end, they should articulate why no single approach suits all genetic diseases and evaluate risks versus benefits based on real data.

Watch Out for These Misconceptions

Common Misconception

During the Debate Carousel, watch for students claiming gene therapy provides permanent cures for all genetic diseases.

What to Teach Instead

Use the Debate Carousel’s role-play to redirect this idea: have students simulate cell division showing gene dilution over time, then revisit their initial cure claim with this data.

Common Misconception

During the Jigsaw Expert Groups, watch for assumptions that in vivo gene therapy is always safer and simpler than ex vivo.

What to Teach Instead

In Jigsaw groups, provide real clinical trial data on immune responses and sterile handling failures, then have students adjust their initial rankings based on evidence rather than preference.

Common Misconception

During the Model Building activity, watch for students believing viral vectors in gene therapy cannot cause harm.

What to Teach Instead

Use the vector models to physically show how viral insertion could disrupt a tumor suppressor gene or trigger inflammation, then prompt students to revise their models to include safeguards.

Assessment Ideas

Discussion Prompt

After the Debate Carousel, ask students to write a short advisory note to a cystic fibrosis patient’s family comparing in vivo and ex vivo gene therapy, referencing vector choice, delivery efficiency, and potential side effects drawn from their debate arguments.

Quick Check

During the Jigsaw Expert Groups, circulate and ask each group to share one delivery challenge they anticipate for hemophilia gene therapy and how their assigned method (in vivo or ex vivo) might address it.

Exit Ticket

After the Model Building activity, have students complete an exit ticket listing one advantage of viral vectors for gene delivery and one disadvantage or ethical concern, using their model or simulation as evidence.

Extensions & Scaffolding

• Challenge students who finish early to design a hybrid gene therapy strategy combining in vivo and ex vivo elements for a specific disease, listing advantages and experimental hurdles.
• For students who struggle, provide sentence starters for the Debate Carousel, such as 'One risk of in vivo delivery is...' or 'Ex vivo allows us to...'.
• Deeper exploration: Invite students to research an approved gene therapy (e.g., Luxturna for inherited blindness) and trace its delivery method, clinical outcomes, and regulatory challenges.