Stop Saying Sharks Will Cure Cancer

TL;DR

Sharks are not cancer cure saviors; their unique genes may hold insights, but they can't reverse mutations.

Transcript

Thanks for CuriosityStream for supporting this episode! Go to CuriosityStream.com/SciShow to learn more { ♪INTRO } It seems like every time scientists learn something about sharks— like, a new genome is published— everyone suddenly starts going on about whether this new bit of information will finally show us how sharks will cure cancer. And there’... Read More

Key Insights

• 💖 Shark cartilage was once believed to inhibit blood vessel growth in tumors, sparking the myth that sharks could cure cancer.
• 🤍 Great white sharks possess unique adaptations in genes related to infection fighting and wound healing, indicating possible effective DNA repair mechanisms.
• ◀️ Shark DNA repair mechanisms cannot reverse cancerous mutations in humans once they have occurred.
• 🧬 DNA repair inhibitors are being studied as potential treatments to block repair processes in tumor cells.
• 🥺 Shark research can provide insights into novel infection-fighting mutations and wound healing, potentially leading to advancements in medicine.
• 🦈 Studying shark genomes can offer insights into evolution and the broader workings of life on Earth.
• 🧡 CuriosityStream offers a wide range of documentaries and videos for those interested in exploring different aspects of science and nature.

Questions & Answers

Q: Why was shark cartilage once believed to be a cancer cure?

Shark cartilage was thought to inhibit blood vessel growth in tumors, leading to the belief that it could be an effective treatment for cancer in humans. However, multiple studies have debunked this myth.

Q: What unique adaptations were found in the genes of great white sharks?

Great white sharks were found to have unique adaptations in genes related to fighting infections and wound healing, suggesting they may have effective DNA repair mechanisms.

Q: Can shark DNA repair mechanisms be used to treat cancer in humans?

While shark DNA repair mechanisms are impressive, they cannot reverse cancerous mutations in humans as cells past the tipping point of cancer are unable to undo them.

Q: How are oncologists looking to block DNA repair in tumor cells?

Oncologists are exploring DNA repair inhibitors that can gum up repair processes in tumor cells, making them more susceptible to traditional cancer treatments like chemotherapy and radiation therapy.

Summary & Key Takeaways

• Shark cartilage was once believed to inhibit blood vessel growth in tumors, leading to the myth that sharks could cure cancer.

• Recent research on great white shark genomes shows unique adaptations in genes related to infection fighting and wound healing.

• Sharks may have effective DNA repair mechanisms, but it doesn't mean they can cure cancer in humans.