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The Role of Z-DNA and Z-RNA in Human Diseases

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Genetics and Genomics".

Deadline for manuscript submissions: closed (30 December 2023) | Viewed by 879

Special Issue Editor


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Guest Editor
Department of Pharmacology, School of Medicine, University of Auckland, Auckland 6000, New Zealand
Interests: Z-DNA; Z-RNA; ADAR; Zα; flipons; genetics; immunology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Our understanding of biological roles for Z-DNA and Z-RNA has increased dramatically over the past few years, reflecting the work performed over four decades by many talented scientists in disparate disciplines and in relative isolation. The discovery of high affinity and structure-specific Z-DNA and Z-RNA binding proteins has led to new insights into innate immunity and the role of left-handed nucleic acids in defense against viral infection and in the pathogenesis of immune-mediated diseases. This knowledge has advanced to the clinic with the introduction into clinical trials of small molecules for the immunotherapy of cancers. The role of Z-DNA and Z-RNAs in regulating the readout of genetic information is also advancing. Flipons, sequences of adopting alternative nucleic acid conformations under physiological conditions, play a role in dynamically setting chromatin structure and resetting promoter states. They provide a new therapeutic target for altering disease outcomes and the engineering of novel gene therapies. The Special Issue will focus on both the basic biology and genetics of Z-DNA and Z-RNA dependent outcomes and the role of Z-DNA and Z-RNA in disease and in the development of new therapies. Our hope is that the Special Issue will provide a forum for scientists from many different disciplines, working on a diverse array of experimental systems, exploring a variety of pre-clinical models and developing novel computational methodologies to learn from each other’s work. By building our community, we hope to foster many productive collaborations that will advance our understanding of Z-DNA and Z-RNA even further.

Dr. Alan Herbert
Guest Editor

Manuscript Submission Information

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Published Papers (1 paper)

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Research

11 pages, 1499 KiB  
Article
The Binding Properties of Antibodies to Z-DNA in the Sera of Normal Healthy Subjects
by David S. Pisetsky, Matthew J. Gedye, Lawrence A. David and Diane M. Spencer
Int. J. Mol. Sci. 2024, 25(5), 2556; https://doi.org/10.3390/ijms25052556 - 22 Feb 2024
Viewed by 594
Abstract
Antibodies to DNA are a diverse set of antibodies that bind sites on DNA, a polymeric macromolecule that displays various conformations. In a previous study, we showed that sera of normal healthy subjects (NHS) contain IgG antibodies to Z-DNA, a left-handed helix with [...] Read more.
Antibodies to DNA are a diverse set of antibodies that bind sites on DNA, a polymeric macromolecule that displays various conformations. In a previous study, we showed that sera of normal healthy subjects (NHS) contain IgG antibodies to Z-DNA, a left-handed helix with a zig-zig backbone. Recent studies have demonstrated the presence of Z-DNA in bacterial biofilms, suggesting a source of this conformation to induce responses. To characterize further antibodies to Z-DNA, we used an ELISA assay with brominated poly(dGdC) as a source of Z-DNA and determined the isotype of these antibodies and their binding properties. Results of these studies indicate that NHS sera contain IgM and IgA as well as IgG anti-Z-DNA antibodies. As shown by the effects of ionic strength in association and dissociation assays, the anti-Z-DNA antibodies bind primarily by electrostatic interactions; this type of binding differs from that of induced anti-Z-DNA antibodies from immunized animals which bind by non-ionic interactions. Furthermore, urea caused dissociation of NHS anti-Z-DNA at molar concentrations much lower than those for the induced antibodies. These studies also showed IgA anti-Z-DNA antibodies in fecal water. Together, these studies demonstrate that antibodies to Z-DNA occur commonly in normal immunity and may arise as a response to Z-DNA of bacterial origin. Full article
(This article belongs to the Special Issue The Role of Z-DNA and Z-RNA in Human Diseases)
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