IMMUNE OSby Allerim

tissue

Skeletal Osteoimmune Ecosystem

Bone as an immune-active remodeling organ linking osteoclasts, osteoblasts, marrow niches, inflammation, sex hormones, and mineral metabolism

osteoimmunologybone remodelingosteoclastmarrow nicheendocrine

Review layer

Last reviewed 2026-05-17

conceptualeducational

Systems teaching draft. Content is structured for education and graph expansion, with formal source tagging ready for the next review pass.

State signature

Systems profile

Inflammation86
Tolerance45
Metabolism82
Tissue88
Neuroimmune38
Chronicity48

Tissue ecosystem

Spatial immune niche

niche

Skeletal Osteoimmune Ecosystem

Barrier

mineralized matrixendosteal surfaceperiosteum

Cells

osteoclastsosteoblastsmacrophagesT cell subsets

Cytokines

RANKLM-CSFTNF-alphaIL-1beta

Neuroimmune

sympathetic tone affects bone remodelingpain-neuroimmune loops after injurystress hormones can suppress formation and alter resorption

Graph neighborhood

Direct relationships

Full graph

Bone remodeling and marrow niches are coupled through osteoblast, osteoclast, stromal, and hematopoietic signaling

IL-17 and other inflammatory cytokines can amplify osteoclast-supporting osteoimmune signaling

Macrophage and osteoclast-lineage biology links inflammatory tone to remodeling and repair

Immune niche

Tissue Ecology

The skeletal system is an osteoimmune tissue: immune cytokines shape osteoclast and osteoblast activity, bone remodeling shapes marrow niches, and endocrine signals such as sex steroids, vitamin D, PTH, and cortisol change inflammatory and repair thresholds.

Dominant immune cells

osteoclastsosteoblastsmacrophagesT cell subsetsmarrow stromal cells

Barrier systems

mineralized matrixendosteal surfaceperiosteummarrow-bone interface

Microbiome interactions

systemic inflammatory tone can increase bone resorptiongut-derived calcium and vitamin D context alters skeletal-immune resilienceperiodontal and gut inflammation can influence osteoimmune signaling

Neuroimmune interactions

sympathetic tone affects bone remodelingpain-neuroimmune loops after injurystress hormones can suppress formation and alter resorption

Cytokine environment

Metabolic conditions

vitamin D signalingcalcium-phosphate balancesex steroid tonemechanical loadingcortisol exposure