Mode
Text Size
Log in / Sign up

Systematic review indicates diverse viruses exploit host peptidylarginine deiminase isoforms to subvert immunity and enhance replicationViruses are evolving to hijack your body's own enzymes to hide from your immune system

AI-generated summary of the cited source, checked by automated accuracy review. How we work

Key Takeaway
Note that diverse viruses exploit host PAD isoforms to subvert immunity, suggesting potential targets for future antiviral development.

This systematic review investigated the roles of the peptidylarginine deiminase (PAD) family and protein citrullination in viral infections. The population and sample size were not reported in the source material. The review analyzed viral strategies regarding PAD isoforms, including tissue distribution, activation mechanisms, and functional significance in host-pathogen interactions.

The analysis indicates that diverse viruses have evolved to exploit specific host PAD isoforms as a strategy to subvert antiviral immunity and enhance viral replication. Distinct viruses selectively upregulate or hijack particular PAD isoforms to disrupt host immune defenses. Divergent strategies were observed between DNA and RNA viruses in leveraging PAD-mediated citrullination.

Therapeutic potential was assessed regarding PAD inhibitors, such as GSK484 and Cl-amidine, which provide potential for antiviral interventions. Additionally, demethoxycurcumin (DMC) is identified as the only selective small-molecule activator of PAD2 to date, offering a valuable tool for investigating PAD2-mediated citrullination in viral infection contexts.

Safety data, including adverse events and tolerability, were not reported. Key limitations include current research constraints and the absence of reported population details. Practice relevance is limited to informing the development of novel antiviral therapeutics rather than guiding immediate clinical management.

Have you ever wondered how a virus stays hidden from your immune system? New research suggests the answer lies in a family of enzymes called PADs found in your cells. These enzymes normally help your body function, but viruses have learned to exploit them. By hijacking these specific tools, viruses can disrupt your natural defenses and multiply quickly inside you. This is a clever strategy that allows infections to spread before you even know you are sick.

The study looked at how different viruses, including DNA and RNA types, use these enzymes in unique ways. Some viruses turn the enzymes up, while others manipulate them to their advantage. Scientists have also found specific chemicals that can block these viral tricks. Compounds like GSK484 and Cl-amidine show promise as potential antiviral treatments. On the other hand, a substance called demethoxycurcumin acts as a tool to study how these enzymes work during an infection.

However, this is a systematic review of existing lab and animal data, not a trial on people. We do not yet know exactly how safe or effective these new drugs will be in humans. The review notes that current research has limitations and that we must be careful not to overstate what we know. These findings are important for guiding the development of future medicines, but they are not a cure you can take today.

What this means for you:
Viruses exploit your body's enzymes to hide, but new drugs that block this trick may one day help fight infections.

Study Details

Study typeSystematic review
EvidenceLevel 1
PublishedMar 2026
View Original Abstract ↓
Peptidylarginine deiminases (PADs) are calcium-dependent enzymes that catalyze protein citrullination, a post-translational modification implicated in both physiological processes and the pathogenesis of various diseases. This review provides a systematic overview of the PAD family's roles in viral infections, with a focus on their tissue distribution, activation mechanisms, and functional significance in host-pathogen interactions. Accumulating evidence indicates that diverse viruses have evolved to exploit specific host PAD isoforms as a strategy to subvert antiviral immunity and enhance viral replication. This review delves into the intricate interplay between viruses and the PAD family, detailing how distinct viruses selectively upregulate or hijack particular PAD isoforms to disrupt host immune defenses. We further compare the divergent strategies employed by DNA and RNA viruses in leveraging PAD-mediated citrullination and summarize the therapeutic potential of PAD inhibitors, such as GSK484 and Cl-amidine, in antiviral interventions. Additionally, demethoxycurcumin (DMC), as the only identified selective small-molecule activator of PAD2 to date, provides a valuable tool for investigating the role of PAD2-mediated citrullination in viral infection. Finally, we discuss current research limitations and propose future directions aimed at deciphering the complex virus-PAD-host axis, with the ultimate goal of informing the development of novel antiviral therapeutics.
Free Newsletter

Clinical research that matters. Delivered to your inbox.

Join thousands of clinicians and researchers. No spam, unsubscribe anytime.