Publications by authors named "Jing-Kun Jia"

Bats, notable as the only flying mammals, serve as natural reservoir hosts for various highly pathogenic viruses in humans (e.g., SARS-CoV and Ebola virus).

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Bats are the natural reservoir hosts of some viruses, some of which may spill over to humans and cause global-scale pandemics. Different from humans, bats may coexist with high pathogenic viruses without showing symptoms of diseases. As one of the most important first defenses, bat type I IFNs (IFN-Is) were thought to play a role during this virus coexistence and thus were studied in recent years.

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Article Synopsis
  • Bats harbor a variety of coronaviruses (SARSr-CoVs) that can infect humans, but these viruses don't replicate well in regular mice.
  • Researchers created a mouse-adapted strain of one such virus, SMA1901, which was able to infect and damage lungs in both young and old mice, showing symptoms similar to SARS and COVID-19.
  • The creation of the SMA1901 strain, with its unique mutations, provides a valuable animal model for testing antiviral drugs and understanding how these bat coronaviruses could affect humans.
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Zoonotic transmission of coronaviruses (CoVs) poses a serious public health threat. Swine acute diarrhea syndrome coronavirus (SADS-CoV), originating from a bat HKU2-related CoV, causes devastating swine diseases and poses a high risk of spillover to humans. Currently, licensed therapeutics that can prevent potential human outbreaks are unavailable.

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SARS-CoV-2 induced marked lymphopenia in severe patients with COVID-19. However, whether lymphocytes are targets of viral infection is yet to be determined, although SARS-CoV-2 RNA or antigen has been identified in T cells from patients. Here, we confirmed that SARS-CoV-2 viral antigen could be detected in patient peripheral blood cells (PBCs) or postmortem lung T cells, and the infectious virus could also be detected from viral antigen-positive PBCs.

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