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Updated: Oct 4, 2025

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Cutibacterium acnes evolution: One pore at a time.

Laurice Flowers1, Amy Campbell2, Aayushi Uberoi2

  • 1Indiana University School of Medicine, Department of Pathology and Laboratory Medicine, Indianapolis, IN, USA.

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|February 10, 2022
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Summary
This summary is machine-generated.

The human skin harbors multiple Cutibacterium acnes (C. acnes) lineages. However, individual skin pores are typically dominated by a single C. acnes lineage, revealing a unique coexistence pattern.

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Area of Science:

  • Microbiology
  • Human Microbiome
  • Dermatology

Background:

  • Cutibacterium acnes (C. acnes) is a common resident of the human skin microbiome.
  • Understanding the population dynamics of C. acnes is crucial for skin health and disease.

Purpose of the Study:

  • To investigate the coexistence and distribution patterns of different Cutibacterium acnes strains on human skin.
  • To determine if individual skin pores are colonized by multiple C. acnes lineages or a single dominant strain.

Main Methods:

  • Utilized advanced molecular techniques to analyze C. acnes populations.
  • Examined strain diversity across different skin sites and within individual pilosebaceous units.

Main Results:

  • The study found that the skin surface hosts a variety of C. acnes lineages.
  • Individual hair follicles (pores) were predominantly colonized by a single C. acnes lineage, indicating micro-niche specialization.

Conclusions:

  • Multiple C. acnes lineages coexist on the skin surface.
  • Significant lineage dominance within individual skin pores suggests spatial structuring and potential ecological competition or exclusion.