| Title: |
Extracellular traps released by antimicrobial TH17 cells contribute to host defense |
| Authors: |
Agak, George W; Mouton, Alice; Teles, Rosane; Weston, Thomas A; Morselli, Marco; Andrade, Priscila R; Pellegrini, Matteo; Modlin, Robert L |
| Source: |
Journal of Clinical Investigation, vol 131, iss 2 |
| Publisher Information: |
eScholarship, University of California |
| Publication Year: |
2021 |
| Collection: |
University of California: eScholarship |
| Subject Terms: |
3101 Biochemistry and Cell Biology (for-2020); 31 Biological Sciences (for-2020); Infectious Diseases (rcdc); Emerging Infectious Diseases (rcdc); Biodefense (rcdc); 1.1 Normal biological development and functioning (hrcs-rac); 2.1 Biological and endogenous factors (hrcs-rac); Infection (hrcs-hc); Acne Vulgaris (mesh); Extracellular Traps (mesh); Humans (mesh); Propionibacteriaceae (mesh); RNA-Seq (mesh); Skin Diseases; Bacterial (mesh); Th17 Cells (mesh); Immunology; T cells; 11 Medical and Health Sciences (for); Immunology (science-metrix); 32 Biomedical and clinical sciences (for-2020); 42 Health sciences (for-2020) |
| Description: |
TH17 cell subpopulations have been defined that contribute to inflammation and homeostasis, yet the characteristics of TH17 cells that contribute to host defense against infection are not clear. To elucidate the antimicrobial machinery of the TH17 subset, we studied the response to Cutibacterium acnes, a skin commensal that is resistant to IL-26, the only known TH17-secreted protein with direct antimicrobial activity. We generated C. acnes-specific antimicrobial TH17 clones (AMTH17) with varying antimicrobial activity against C. acnes, which we correlated by RNA sequencing to the expression of transcripts encoding proteins that contribute to antimicrobial activity. Additionally, we validated that AMTH17-mediated killing of C. acnes and bacterial pathogens was dependent on the secretion of granulysin, granzyme B, perforin, and histone H2B. We found that AMTH17 cells can release fibrous structures composed of DNA decorated with histone H2B that entangle C. acnes that we call T cell extracellular traps (TETs). Within acne lesions, H2B and IL-17 colocalized in CD4+ T cells, in proximity to TETs in the extracellular space composed of DNA decorated with H2B. This study identifies a functionally distinct subpopulation of TH17 cells with an ability to form TETs containing secreted antimicrobial proteins that capture and kill bacteria. |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
unknown |
| Relation: |
qt1rb8g6nt; https://escholarship.org/uc/item/1rb8g6nt; https://escholarship.org/content/qt1rb8g6nt/qt1rb8g6nt.pdf |
| DOI: |
10.1172/jci141594 |
| Availability: |
https://escholarship.org/uc/item/1rb8g6nt; https://escholarship.org/content/qt1rb8g6nt/qt1rb8g6nt.pdf; https://doi.org/10.1172/jci141594 |
| Rights: |
public |
| Accession Number: |
edsbas.EE0A0C80 |
| Database: |
BASE |