Clinical Challenges in Transplant Surgery: How Xenotransplantation Will Change Our Lives

Behind The Knife: The Surgery Podcast

Education, Science, Health & Fitness, Medicine

4.8 • 1.4K Ratings

🗓️ 30 March 2026

⏱️ 46 minutes

🔗️ Recording | iTunes | RSS

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Summary

Xenotransplantation—the use of organs from other species to treat human disease—has long existed at the intersection of science fiction and surgical innovation. While early efforts were marked by limited success and ethical controversy, recent advances in genetic engineering, immunosuppression, and organ preservation have brought the field closer than ever to clinical reality.

In this episode of Behind the Knife, we are joined by Dr. Joshua Mezrich to explore the history, science, and future of xenotransplantation. Through a narrative lens, we trace the evolution of transplantation from its earliest experimental days to the modern era of gene-edited porcine organs, highlighting key breakthroughs, ethical challenges, and the pioneers who shaped the field. We also examine the current state of clinical trials and what xenotransplantation may mean for the future of organ availability and transplant practice.

Hosts
- Madeline Cloonan, MD PhD, General Surgery Resident, University of Nebraska Medical Center, @maddie_cloonan
- Joshua Mezrich, MD, Professor, University of Wisconsin School of Medicine and Public Health

Learning Objectives
By the end of this episode, listeners will be able to:
- Describe the historical evolution of xenotransplantation, including the primate and early porcine eras
- Explain the key immunologic and biologic barriers to xenotransplantation, including hyperacute rejection and the role of natural antibodies
- Summarize major scientific advances that enabled modern xenotransplantation, including cloning and CRISPR-based gene editing
- Discuss recent clinical experiences and ongoing trials of xenotransplantation in humans
- Evaluate the ethical considerations and societal implications of xenotransplantation
- Consider the potential role of xenotransplantation in addressing organ shortage and reshaping transplant eligibility and allocation

Check out Dr. Mezrich’s new book!
https://www.amazon.com/Every-Living-Creature-Xenotransplantation-Change-ebook/dp/B0FH14LF6K

***Fellowship Application Link: https://forms.gle/QSUrR2GWHDZ1MmWC6

***Surgical Instrument FlashCards: https://app.behindtheknife.org/premium/surgical-instrument-flashcards

Transcript

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0:00.0	Behind the Night, The Surgery Podcast, Relevant and Engaging Content to help you dominate the day. We want you want you, yes, you, to join the Behind the Knife team as a surgical education fellow.
0:39.9	We're looking for enterprising surgical residents to take the bull by the horns and build something new and exciting.
0:46.6	Fellows will benefit from ample support from the Behind the Knife team, including the use of our digital education platform,
0:52.8	and access to all of our resources like
0:54.8	illustrators, video editing, AI tools, social media, and more. Get your name out there and build
1:01.2	your CV by being part of the number one surgery education platform in the world. We're offering a
1:07.3	two-year fellowship starting July 26 and ending in June 28.
1:12.4	Only residents beginning their two-year academic development time will be considered.
1:16.9	Check out the show notes for more information, including the application link.
1:20.4	All applications are due on April 20th.
1:23.7	Again, all applications are due by April 20th.
1:30.3	Now, get out there and dominate the day. Hey, BTK listeners, want to feel more confident in the OR?
1:34.3	Check out our surgical instrument flashcards.
1:36.3	With over 300 instruments, these cards are packed with key tips, subtle distinctions,
1:40.3	and insider tricks you usually pick up after years in the OR.
1:48.2	Perfect for students, surgical technologists, or anyone prepping to scrub a case.
1:52.5	You can find them in your library on the Behind the Knife app or at Behind The Knife.org.
1:56.3	Test your knowledge, share them with your learners, and as always, dominate the day.
2:17.6	Hi, everyone. Thanks for joining us. My name is Dr. Maddie Clunin. I'm a general surgery resident at the University of Nebraska Medical Center. And today we're talking about one of the most fascinating ideas in transplantation, and that's xenotransplantation, the possibility of using organs from other species to help save human lives. This idea has been around for decades, but today it feels closer than ever before.
2:22.0	To understand where the field might be going, we really have to understand the story of transplantation itself. So today for the behind the knife transplant series, we're doing something
2:27.3	a little bit different. I'm joined today by Dr. Jasra Mez Rich. He's a professor of surgery
2:32.0	and abdominal transplant surgeon at the University of Wisconsin.
	...

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