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Seminars in Immunopathology

, Volume 41, Issue 5, pp 619–626 | Cite as

The role of bone cells in immune regulation during the course of infection

  • Asuka Terashima
  • Hiroshi TakayanagiEmail author
Review

Abstract

Bone homeostasis depends on a balance between osteoclastic bone resorption and osteoblastic bone formation. Bone cells are regulated by a variety of biochemical factors, such as hormones and cytokines, as well as various types of physical stress. The immune system affects bone, since such factors are dysregulated under pathologic conditions, including infection. The bone marrow, one of the primary lymphoid organs, provides a special microenvironment that supports the function and differentiation of immune cells and hematopoietic stem cells (HSCs). Thus, bone cells contribute to immune regulation by modulating immune cell differentiation and/or function through the maintenance of the bone marrow microenvironment. Although osteoblasts were first reported as the population that supports HSCs, the role of osteoblast-lineage cells in hematopoiesis has been shown to be more limited than previously expected. Osteoblasts are specifically involved in the differentiation of lymphoid cells under physiological and pathological conditions. It is of critical importance how bone cells are modified during inflammation and/or infection and how such modification affects the immune system.

Keywords

Bone marrow microenvironment Osteoblast Lymphopoiesis Sepsis Infection 

Notes

Author contributions

AT and HT wrote the manuscript. HT also edited it.

Funding information

This work was supported in part by a grant for Practical Research Project for Rare/Intractable Diseases (JP19ek0109379) from the Japan Agency for Medical Research and Development.

Compliance with ethical standards

Conflict of interest

AT declare that she belongs to an endowment department, Department of Osteoimmunology, supported with an unrestricted grant from AYUMI Pharmaceutical Corporation, Chugai Pharmaceutical Co., Ltd., MIKI HOUSE Co., Ltd., and Noevir Co., Ltd.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Osteoimmunology, Graduate School of Medicine and Faculty of MedicineThe University of TokyoTokyoJapan
  2. 2.Department of Immunology, Graduate School of Medicine and Faculty of MedicineThe University of TokyoTokyoJapan

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