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Related Concept Videos

Immune Response Against Viral Pathogens01:29

Immune Response Against Viral Pathogens

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The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
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NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
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Nucleic Acids02:43

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Nucleic acids are the most important macromolecules for the continuity of life. They carry the cell's genetic blueprint and carry instructions for its functioning.
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Nucleic Acids02:43

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Nucleic acids are the most important macromolecules for the continuity of life. They carry the cell's genetic blueprint and carry instructions for its functioning.
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Nucleic Acid Structure01:25

Nucleic Acid Structure

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The pentose sugar in DNA is deoxyribose, while in RNA the pentose sugar is ribose. The difference between the sugars is the presence of the hydroxyl group on the ribose's second carbon and a hydrogen on the deoxyribose's second carbon. The phosphate residue attaches to the hydroxyl group of the 5′ carbon of one sugar and the hydroxyl group of the 3′ carbon of the sugar of the next nucleotide, which forms  a 5′ to 3′ phosphodiester linkage.
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Cytotoxic T Cells-mediated Immune Response01:27

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Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
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Nucleic Acid Immunity.

G Hartmann1

  • 1Institute of Clinical Chemistry and Clinical Pharmacology, University Hospital, University of Bonn, Bonn, Germany.

Advances in Immunology
|February 21, 2017
PubMed
Summary
This summary is machine-generated.

All life forms possess nucleic acid immunity to defend their genome against foreign DNA and RNA. This review integrates diverse defense mechanisms, highlighting their crucial role in health and disease.

Keywords:
ADAR1Antiviral immunityCRISPR/CasCpG-DNADNaseImmune sensing of nucleic acidsInnate immunityOASOligonucleotideRIG-IRNAiRNase HRNase LSAMHD1StingTLR3TLR7TLR8TLR9Trex1cGAMPcGAS

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Sequence-specific and Selective Recognition of Double-stranded RNAs over Single-stranded RNAs by Chemically Modified Peptide Nucleic Acids
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Area of Science:

  • Molecular Biology
  • Immunology
  • Genetics

Background:

  • Organisms possess sophisticated mechanisms to maintain genome integrity by detecting and eliminating foreign genetic material.
  • These mechanisms, collectively termed nucleic acid immunity, include restriction-modification systems, CRISPR/Cas, RNA interference, and immune sensing of nucleic acids.
  • Nucleic acid immunity comprises both innate and adaptive components with diverse effector functions.

Purpose of the Study:

  • To provide a comprehensive overview of the diverse mechanisms of nucleic acid immunity.
  • To integrate these mechanisms under the unified framework of nucleic acid immunity.
  • To underscore the relevance of nucleic acid immunity in understanding and advancing medicine.

Main Methods:

  • Review of existing literature on nucleic acid immunity mechanisms across different life forms.
  • Integration of findings from various fields including molecular biology, immunology, and genetics.
  • Comparative analysis of nucleic acid defense systems in prokaryotes and eukaryotes.

Main Results:

  • Nucleic acid immunity encompasses a wide array of systems, including nucleases, intrinsic restriction factors, and extrinsic immune signaling pathways.
  • Dysregulation of nucleic acid immunity can lead to autoimmune diseases and sterile inflammation due to responses to self-nucleic acids.
  • Mechanisms from non-vertebrates are relevant to human disease when present in pathogens or vectors.

Conclusions:

  • Nucleic acid immunity is a fundamental biological principle essential for defense against viruses and endogenous retroelements.
  • Understanding the integrated framework of nucleic acid immunity offers significant potential for medical advancements.
  • Further research into nucleic acid immunity mechanisms can lead to novel therapeutic strategies for infectious and autoimmune diseases.