TWiV 1221 addresses critical issues facing science in the US, including severe budget cuts to the National Science Foundation, substantial grant losses at Harvard University, a judge blocking a ban on international students, and alleged political interference from "DOGE" in NIH grant funding. The episode then dives into two significant research papers: one reveals that common cold coronavirus infections induce cross-reactive, Fc receptor-binding antibodies against the S2 domain of SARS-CoV-2, suggesting a non-neutralizing mechanism for partial protection against COVID-19. The second paper identifies inherited IFNAR1 deficiencies as the cause of severe adverse reactions to live measles and yellow fever vaccines in certain individuals, highlighting a rare genetic predisposition that impairs type I interferon signaling and compromises the body's ability to control vaccine virus replication. The hosts also engage with listener feedback on topics such as Wikipedia editing, the psychological roots of conspiracy theories, and the impact of funding cuts on public health institutions, concluding with diverse weekly science picks.
1:45 Supporting Science & ASV 2025: The hosts encourage financial support for MicrobeTV's science education podcasts and promote the upcoming American Society for Virology (ASV) 2025 meeting in Montreal (July 14-17), hosted by McGill University.
6:18 US Science Funding Under Threat: Discussion begins with alarming reports:
NSF Cuts: A New York Times article details that National Science Foundation (NSF) funding has been cut to its lowest level in decades, with 51% fewer grants across all STEM fields, significantly impacting STEM education.
Harvard Grant Reductions:Nature reports that Harvard University has lost over 1,000 grants, totaling more than $2.4 billion, affecting its research funds.
International Student Ban Blocked: A federal judge has blocked the Trump administration's attempt to ban Harvard from enrolling international students.
10:13 DOGE Interference with NIH Grants: A Nature news article, based on sworn testimonies from NIH officials, alleges that Elon Musk's "DOGE" (Department of Government Efficiency, not a legitimate government entity) ordered the termination of specific NIH grants, raising concerns about unconstitutional and politically motivated interference in science funding.
14:55 Endemic Coronaviruses and SARS-CoV-2 Cross-Reactivity: The first scientific paper from the Journal of Virology explores the immune response to common cold endemic coronaviruses (ECOVs) like 229E, HKU1, NL63, and OC43.
Key Finding: While ECOV infection did not induce neutralizing antibodies against SARS-CoV-2, it significantly increased levels of anti-SARS-CoV-2 S2 antibodies that bind to Fc gamma R3A receptors.
Takeaway: This suggests that prior common cold infections can generate cross-reactive antibodies targeting the more conserved S2 region of the SARS-CoV-2 spike protein. These antibodies, though non-neutralizing, could mediate protective functions (like ADCC) and inform strategies for developing pan-coronavirus vaccines focusing on conserved regions and Fc-mediated immunity.
49:47 Inherited IFNAR1 Deficiency and Vaccine Reactions: The second paper from the Journal of Experimental Medicine investigates severe adverse reactions to live measles and yellow fever vaccines.
Patient Cases: Two children (one from Iran, one from Brazil) experienced life-threatening disseminated vaccine infections after MMR and yellow fever vaccinations, respectively.
Genetic Basis: Whole exome sequencing revealed inherited, autosomal recessive deficiencies in IFNAR1, a crucial component of the type I interferon receptor, in both patients.
Functional Impact: Patient-derived cells showed a profound inability to respond to type I interferons, failing to activate downstream signaling pathways and control replication of live attenuated vaccine viruses in vitro.
Takeaway: This rare genetic immunodeficiency compromises the body's innate antiviral response, allowing attenuated vaccine viruses to replicate uncontrollably. The findings underscore the critical role of type I interferon signaling in vaccine safety and suggest the potential need for genetic screening in vulnerable populations (e.g., those with higher consanguinity rates) or the development of alternative vaccine technologies for such individuals.
1:22:16 Listener Engagement and News: The hosts address diverse listener emails and discuss various topics:
The importance of active Wikipedia editing for scientific accuracy.
The psychological tendency to attribute misfortune to malice, as seen in conspiracy theories like the lab leak.
The recent dissolution of the Walter Reed Biosystematics Unit (WRBU), a critical resource for vector-borne disease research.
Concerns about US attorneys sending "vaguely threatening letters" to scientific journals regarding their published content.
Clarification on the distinction between BSL-2 and BSL-2+ laboratory containment levels.
Angela: Highlights new contact lenses that enable humans to see in near-infrared, building on earlier mouse studies.
Alan: Recommends a blog post titled "Autocrats are afraid of you," which uses election data to illustrate that "Did Not Vote" is consistently the largest voting bloc in US presidential elections, emphasizing the importance of voter participation.
Vincent: Suggests a YouTube video, "How One Company Secretly Poisoned The Planet," detailing the history and widespread environmental contamination by PFAS (per- and polyfluoroalkyl substances), also known as "forever chemicals," used in products like Teflon.