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Updated: Aug 5, 2026
08:18
Induction and Validation of Cellular Senescence in Primary Human Cells
Published on: June 20, 2018
SenSpots: when B cells age in place
Qianzhao Ji1, Guang-Hui Liu2, Jing Qu3
1State Key Laboratory of Organ Regeneration and Reconstruction, Institute of Zoology, Chinese Academy of Sciences, Beijing, China; Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, China.
Trends in Immunology
|July 31, 2026
Summary
Aging human lymph nodes show B cells forming
Area of Science:
- Immunology
- Aging Research
- Multi-omics
Background:
- The aging immune system, or immunosenescence, affects lymph node function and humoral immunity.
- Germinal centers are critical for adaptive immune responses, but their aging dynamics are not fully understood.
Purpose of the Study:
- To investigate the spatial multi-omics landscape of aging human lymph nodes.
- To identify cellular and molecular changes within germinal centers during aging.
Main Methods:
- Spatial multi-omics analysis (epigenetics, transcriptomics, proteomics, metabolomics).
- Analysis of human lymph node tissues from aged individuals.
Main Results:
- Immunosenescence is characterized by the formation of 'SenSpots' – focal B cell aggregations within germinal centers.
- These SenSpots exhibit coordinated epigenetic, transcriptional, proteomic, and metabolic reprogramming.
- This reprogramming spatially orchestrates the decline in humoral immune function.
Conclusions:
- SenSpots represent a key spatial hallmark of immunosenescence in human lymph nodes.
- Understanding SenSpot biology is crucial for addressing age-related decline in humoral immunity.
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