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Related Concept Videos

Overview of Archaea01:29

Overview of Archaea

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Archaea, named after the Archaean eon, represent a unique domain of life, distinct from bacteria and eukaryotes, with remarkable traits. Their cellular and molecular features, ecological adaptability, and industrial relevance highlight their importance in understanding life processes and leveraging biotechnology.Cellular and Molecular CharacteristicsA defining feature of archaea is their unique membrane composition. Archaeal membranes contain ether-linked isoprenoid lipids, which confer...
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Diversity of Archaea II01:24

Diversity of Archaea II

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Archaea, one of the three domains of life, exhibit remarkable diversity and adaptability, thriving in both extreme and moderate environments. Historically, most identified archaea have been classified into two major phyla: Euryarchaeota and Crenarchaeota. However, recent molecular studies have expanded this classification to include three additional phyla: Thaumarchaeota, Nanoarchaeota, and Korarchaeota, each exhibiting unique characteristics and ecological roles.Thaumarchaeota: Mesophiles...
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Viruses of Archaea01:29

Viruses of Archaea

429
Archaeal viruses play a crucial role in the ecosystems of extremophilic archaea, particularly those belonging to the phyla Euryarchaeota and Crenarchaeota. By shaping host evolution and facilitating gene transfer, these viruses influence microbial communities and contribute to genetic diversity in extreme environments. The archaea they infect thrive in acidic hot springs and hydrothermal vents characterized by high temperatures and low pH. Archaeal viruses exhibit remarkable structural...
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Diversity of Archaea I01:30

Diversity of Archaea I

518
Archaea, a domain of single-celled microorganisms, are classified into five major phyla based on genetic and biochemical characteristics: Euryarchaeota, Crenarchaeota, Thaumarchaeota, Korarchaeota, and Nanoarchaeota. Among these, the phylum Euryarchaeota is notable for its remarkable diversity in morphology, metabolism, and ecological adaptations.Morphological and Metabolic DiversityMembers of Euryarchaeota exhibit a variety of cellular shapes, including rods and cocci. Their metabolic pathways...
518
Diversity of Archaea III01:27

Diversity of Archaea III

304
Crenarchaeota, a prominent phylum of Archaea, is remarkable for its ability to thrive in extreme environments characterized by high temperatures and acidity. These microorganisms inhabit sulfuric hot springs, volcanic systems, and submarine hydrothermal vents, where temperatures often exceed 100°C. The unique adaptations of Crenarchaeota not only allow survival under such extreme conditions but also provide insights into the mechanisms of life in primordial Earth-like...
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Diversity of Archaea IV01:29

Diversity of Archaea IV

381
Hyperthermophilic archaea are a group of extremophiles thriving at temperatures above 80°C, often in hydrothermal vents and volcanic soils where conditions surpass the boiling point of water. At such temperatures, proteins, membranes, and DNA in most organisms degrade, but hyperthermophiles have evolved remarkable adaptations to maintain stability and function.Unique Cellular FeaturesHyperthermophilic membranes are composed of a monolayer of biphytanyl tetraether lipids, which resist...
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Related Experiment Video

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The Human Archaeome: Commensals, Opportunists, or Emerging Pathogens?

Douglas M Ruden1

  • 1Department of Obstetrics and Gynecology, Charles Stewart Mott Center for Human Growth and Development, Institute of Environmental Health Sciences, Wayne State University, Detroit, MI 48302, USA.

Pathogens (Basel, Switzerland)
|November 27, 2025
PubMed
Summary
This summary is machine-generated.

Archaea are common human microbes whose roles in health and disease are unclear. This review synthesizes evidence on archaeal diversity, habitat, and potential indirect disease contributions, exploring the human "archaeome".

Keywords:
archaea and diseasearchaeal microbiomebacteria-MERFISHemerging pathogensinflammatory bowel diseasemethanogensmicrobial interactionsobesitypathogenesisperiodontal disease

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Area of Science:

  • Microbiology
  • Human Microbiome Research
  • Eukaryotic Genomics

Background:

  • Archaea are a fundamental domain of life, increasingly recognized within the human microbiome.
  • Their specific roles in human health and disease pathogenesis remain largely underappreciated and poorly understood.
  • Unlike bacteria, no archaeal species are confirmed primary mammalian pathogens, but their ubiquity suggests indirect physiological and pathological influence.

Purpose of the Study:

  • To synthesize current evidence on archaeal diversity and habitat specificity across human body sites.
  • To evaluate the emerging concept of the human "archaeome" and its potential involvement in disease.
  • To highlight technological advancements enabling translational applications in microbiome diagnostics and therapeutics.

Main Methods:

  • Review and synthesis of existing scientific literature on human-associated archaea.
  • Analysis of archaeal diversity and niche specialization across gastrointestinal, aerodigestive, urogenital tracts, and skin.
  • Evaluation of evidence linking archaeal presence to specific diseases and host-microbiome interactions.

Main Results:

  • Methanogens dominate the lower gastrointestinal tract, influencing fermentation and methane production.
  • Nitrososphaeria are prevalent on skin and in the upper aerodigestive tract, indicating ecological specialization.
  • Associations found between methanogens and conditions like IBS, IBD, obesity, CRC, and periodontal disease; archaea detected in cystic fibrosis lungs.

Conclusions:

  • Archaea may contribute indirectly to disease through metabolic cross-feeding, immune modulation, and synergistic interactions in polymicrobial infections.
  • Understanding the human "archaeome" is crucial for advancing microbiome diagnostics, therapeutic targeting, and microbiome engineering.
  • Emerging technologies like MERFISH and multi-omics profiling are key to unlocking the translational potential of archaeal research.