Purinergic Signalling in Bone

A special issue of Biomolecules (ISSN 2218-273X). This special issue belongs to the section "Biological Factors".

Deadline for manuscript submissions: closed (31 May 2021) | Viewed by 2752

Special Issue Editors


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Guest Editor
Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Rm338 BRBII/III, 421 Curie Blvd, Philadelphia, PA 19104, USA
Interests: osteoclast cell biology; cellular and molecular mechanisms underlying multinucleation; cellular and nuclear polyploidy; polyploidization; macrophage cell biology; bone homeostasis; bone pathology
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Rm338 BRBII/III, 421 Curie Blvd, Philadelphia, PA 19104, USA
Interests: bone biology; bone disease; osteoclasts/osteoblasts and therapeutic drug design

Special Issue Information

Dear Colleagues,

Bone is a highly dynamic and specialized connective tissue. It is composed of inorganic mineral salts deposited within an organic collagen matrix, and three main types of bone cells: osteoclasts, osteoblasts and osteocytes. Bone homeostasis is maintained by the balanced functions of bone cells, while functional imbalance results in abnormal bone homeostasis and disease development. Bone homeostasis is largely influenced by substances present in the microenvironment. Extracellular purines and purinergic signalling are one of the most primitive forms of intercellular signalling. Purinergic signalling defines a group of receptors and intermembrane channels activated by extracellular purines such as ATP, ADP and AMP. Bone cells express multiple purinergic receptors. Metabolisms or tissue injuries can change the concentration of extracellular purines, influencing bone cell functions through purinergic receptors. It is now recognized that purinergic signalling is a modulator of many physiological and pathological conditions in bone, such as osteoporosis, rheumatoid arthritis and cancers.

This Special Issue aims to cover a selection of recent research topics and current review articles related to purinergic signalling in bone. Up-to-date review articles, commentaries and experimental papers are all welcome.

Dr. Noriko Takegahara
Dr. Hyunsoo Kim
Guest Editors

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Keywords

  • Purinergic receptors
  • Purines
  • Extracellular nucleotides
  • ATP, ADP, AMP and adenosine
  • Osteoblast
  • Osteoclast
  • Osteocyte
  • Bone
  • Metabolism
  • Osteoporosis
  • Osteopetrosis
  • Rheumatoid arthritis
  • Cancer

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Published Papers (1 paper)

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Review

16 pages, 787 KiB  
Review
In Search of a Role for Extracellular Purine Enzymes in Bone Function
by Mariachiara Zuccarini, Patricia Giuliani, Francesco Caciagli, Renata Ciccarelli and Patrizia Di Iorio
Biomolecules 2021, 11(5), 679; https://doi.org/10.3390/biom11050679 - 30 Apr 2021
Cited by 6 | Viewed by 2280
Abstract
Bone is one of the major tissues that undergoes continuous remodeling throughout life, thus ensuring both organic body growth during development and protection of internal organs as well as repair of trauma during adulthood. Many endogenous substances contribute to bone homeostasis, including purines. [...] Read more.
Bone is one of the major tissues that undergoes continuous remodeling throughout life, thus ensuring both organic body growth during development and protection of internal organs as well as repair of trauma during adulthood. Many endogenous substances contribute to bone homeostasis, including purines. Their role has increasingly emerged in recent decades as compounds which, by interacting with specific receptors, can help determine adequate responses of bone cells to physiological or pathological stimuli. Equally, it is recognized that the activity of purines is closely dependent on their interconversion or metabolic degradation ensured by a series of enzymes present at extracellular level as predominantly bound to the cell membrane or, also, as soluble isoforms. While the effects of purines mediated by their receptor interactions have sufficiently, even though not entirely, been characterized in many tissues including bone, those promoted by the extracellular enzymes providing for purine metabolism have not been. In this review, we will try to circumstantiate the presence and the role of these enzymes in bone to define their close relationship with purine activities in maintaining bone homeostasis in normal or pathological conditions. Full article
(This article belongs to the Special Issue Purinergic Signalling in Bone)
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