bioRxiv

Age linked to shifts in cell communities in head and neck cancer

An observational analysis of 73 head and neck cancer patients aged 18 to 91 linked age mainly to differences in cell abundance and organization.

Paper by L. Kroehling, A. Spinella, X. Varelas, S. Monti · Boston University
Tumor tissue contains crowded epithelial cells, macrophages, and connective-tissue fibers, with a smaller, loosely spaced cell cluster nearby.
Preprint: cross-sectional study of 73 peopleMechanisms

Edited by Boris Djordjevic · AgingResearch.News

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An observational study analyzed individual-cell data from 73 patients aged 18 to 91 with human papillomavirus–negative head and neck squamous cell carcinoma, a cancer of surface-lining cells. Researchers used computational methods to compare cell abundance, organization and gene activity.

Age-associated differences mainly involved shifts in cell abundance and organization, rather than widespread changes in gene activity. Older age was linked to a cell community containing surface-lining cells, connective-tissue cells and macrophages, a type of immune cell. The researchers also identified midkine, a tumor-derived signaling protein, as linked to tissue remodeling, immune suppression and gene activity associated with invasion.

Why it matters

The authors identify midkine and pathways that reshape tissue around tumors as potential targets for cancer therapies tailored to age.

Caveats

The human findings were observational and concerned human papillomavirus–negative head and neck cancer; they do not establish cause and effect. The study is a preprint and has not been peer-reviewed.

Where the evidence stands

Extracellular matrix remodeling

  • 200 independent labs in 38 countries
  • 9 findings against
  • Funders: National Institutes of Health and others
  • 32 of 305 findings with company ties

Immune response

  • 298 independent labs in 46 countries
  • 30 findings against
  • Funders: National Institutes of Health and others
  • 81 of 538 findings with company ties

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