The University of Chicago - Could A Fungal Pandemic Be “The Last of Us?", with Arturo Casadevall
The conversation centers around the premise of 'The Last of Us' and its connection to real-world scientific concerns about fungi adapting to higher temperatures due to climate change. Arturo Casadevall, a microbiologist, explains that while fungi are generally not pathogenic to humans due to our body temperature, global warming could change this. The discussion highlights the emergence of Candida auris, a fungus that appeared simultaneously on three continents, possibly due to global warming. This serves as a warning of potential fungal pandemics. The conversation also touches on the challenges of developing antifungal drugs due to the biochemical similarities between fungi and humans, which complicates targeting fungi without harming human cells. Despite these challenges, there is optimism about developing vaccines and new drugs to combat potential fungal threats. Additionally, fungi's potential in industrial applications, such as biodegradable materials and air conditioning, is discussed, showcasing their dual role as both a threat and a resource.
Key Points:
- Fungi could become pathogenic to humans due to climate change, as they adapt to higher temperatures.
- Candida auris is an example of a fungus that emerged globally, possibly due to climate change, highlighting the risk of fungal pandemics.
- Developing antifungal drugs is challenging due to the biochemical similarities between fungi and humans, making it hard to target fungi without harming humans.
- There is potential for developing vaccines and new antifungal drugs to prepare for future fungal threats.
- Fungi have promising industrial applications, such as biodegradable materials and air conditioning, showing their potential beyond being a threat.
Details:
1. 🎮 The Last of Us: Fiction Meets Reality
- The Last of Us transitioned from a video game to a TV show, gaining widespread recognition.
- Arturo Casadevall, a professor at Johns Hopkins, received inquiries about being an adviser for the show due to his expertise, despite not having watched it.
- The show is based on a scientific premise that global warming could allow fungi to adapt to higher temperatures, potentially becoming a threat to humans.
- Casadevall's work focuses on the impact of fungi, aligning with the show's theme of fungi posing a danger to human health.
2. 🌍 Climate Change and the Fungal Threat
- Scientists are preparing for the possibility of a future fungal pandemic due to climate change.
- Humans generally have natural immunity against fungi, primarily due to higher body temperatures that fungi cannot typically survive.
- However, climate change may enable fungi to adapt to warmer temperatures, potentially breaching human temperature defenses.
- An example includes the fungus Candida auris, which has emerged as a threat due to its ability to survive higher temperatures.
- These adapted fungi could potentially cause a pandemic if they become communicable or are spread through environmental events.
- Proactive measures, such as developing vaccines and new antifungal drugs, along with increasing public awareness, can help mitigate the risk of a fungal pandemic.
- Current research includes exploring the genetic mechanisms of fungi to understand their adaptability to temperature changes.
3. 🌿 Fungi: The Good, the Bad, and the Essential
3.1. Understanding Fungi
3.2. Ecological and Human Benefits of Fungi
3.3. Challenges and Opportunities in Fungal Research
4. 🦠 Candida Auris: A New Global Threat
- Candida Auris was first recognized in 2009, with simultaneous independent emergence on three continents, suggesting a global environmental factor rather than direct human transmission.
- The CDC has issued alerts due to its rapid spread in healthcare environments, posing a significant threat to immunocompromised patients, estimated at 7 million in the U.S.
- This fungus is notably drug-resistant, complicating treatment and containment efforts in medical settings.
- Global warming is proposed as a factor in the emergence of Candida Auris, indicating environmental changes may influence its spread and adaptability.
- The fungus's ability to thrive at higher temperatures could surpass human body temperature defenses, increasing infection risks.
- Research highlights a decline in average human body temperature, potentially heightening vulnerability to fungal infections as fungi like Candida Auris adapt to warmer climates.
- The fungus can reassort its DNA in warmer conditions, enhancing drug resistance and virulence.
- Scientists are actively working on developing better antifungal medications and exploring the potential for a universal antifungal vaccine to address such threats.
5. 💊 Antifungal Challenges and Resistance
5.1. Biochemical Similarity Challenges
5.2. Historical and Current Developments
5.3. Antifungal Resistance
5.4. Ecological Impact
5.5. Human Health Impact
5.6. Vaccine Development Challenges
6. 🔬 Innovative Uses of Fungi in Industry
- Fungi can be grown into biodegradable materials like fungal leather, which can be shaped into items such as handbags, offering a sustainable alternative to animal leather.
- NASA is exploring fungi for radiation shielding in space, as fungi produce melanin, a potent shielding material.
- Fungi are being compressed into bricks for construction, indicating potential for a new 'biological age' of materials beyond traditional stone, bronze, and iron.
- Fungi have cooling properties due to their high water content; a prototype air conditioner using mushrooms lowered temperatures by nearly 10 degrees Celsius.
- Fungi-based water filtration systems are being developed to absorb contaminants from water, showcasing their environmental utility.