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Archetypal autophagic players through new lenses for bone marrow stem/mature cells regulation

期刊

JOURNAL OF CELLULAR PHYSIOLOGY
卷 236, 期 9, 页码 6101-6114

出版社

WILEY
DOI: 10.1002/jcp.30296

关键词

Atg7; autophagy; bone marrow physiology; hematopoietic stem cells; mesenchymal stem cells; p62

资金

  1. Noemi Avicolli funds

向作者/读者索取更多资源

The bone marrow landscape is comprised of specialized and stem/progenitor cells that coordinate tissue-related and physiological features. Understanding the intramural relationships between different cell populations within specific anatomical niches is crucial for orchestrating cell behavior and hierarchies in bone marrow populations. Autophagy plays a key role in maintaining bone marrow homeostasis through coordinating the activity of stem and mature cells.
The bone marrow landscape consists of specialized and stem/progenitor cells, which coordinate important tissue-related and systemic physiological features. Within the marrow cavity, stem/progenitor and differentiated hematopoietic and skeletal cells congregate into dynamic functional assemblies throughout specific anatomical regions, termed niches. There is a need for better understanding of the bone marrow microareas, through exploration of the intramural physical and molecular interactions of the distinctive cell populations. The elective liaisons established among the mesenchymal/stromal stem cell and hematopoietic stem cell lineage trees play a key role in orchestrating the stem/mature cell behavior and customized hierarchies within bone marrow cell populations. Recently, the autophagic apparatus has been discovered to be an important feature of bone marrow homeostasis. Autophagy-related factors involved in the labyrinthic and highly dynamic bone marrow workshop redesign the niche framework by coordinating the operational schedule of pluripotent stem and mature cells. The following report summarizes the most recent breakthroughs in our understanding of the intramural relationships between bone marrow cells and key autophagic mediators. Doubtless, the consideration of the autophagy-related and unrelated functions of main players, such as p62, Atg7, Atg5, and Beclin-1 remains a compelling task to thoroughly understand the complex relations between the heterogenic cell types that populate bone marrow.

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