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Related Concept Videos

Overview of Exosomes01:36

Overview of Exosomes

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Exosomes are stable, lipid bilayer-enclosed vesicles capable of crossing biological barriers. They can carry a wide range of molecules required for intercellular communication. Once exosomes are released from the cell where they originated, they enter a recipient cell through various pathways such as fusion, receptor-mediated endocytosis, macropinocytosis, and phagocytosis.
Stahl et al. discovered exosomes in 1983, but the exosomes were initially considered waste products released from the...
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Osteoclasts in Bone Remodeling01:31

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Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during...
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Bone Disorders01:29

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Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
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Bone Marrow Sampling and Transplants01:22

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Bone marrow transplant is a potential cure for several diseases, including cancer and specific genetic disorders. Notably, this procedure is applicable for patients suffering from aplastic anemia, certain types of leukemia, severe combined immunodeficiency disease (SCID), Hodgkin's disease, non-Hodgkin's lymphoma, multiple myeloma, thalassemia, sickle-cell disease, and certain cancers.
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Mesenchymal Stem Cells01:19

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Mesenchymal stem cells (MSCs) are adult stem cells that can differentiate into most connective tissue cell types, except for hematopoietic cells, depending upon the source of MSCs. For example, bone-marrow-derived MSCs (BM-MSCs) can differentiate into osteocytes, hepatocytes, and pancreatic and neuronal cells. MSCs can be isolated from various sources such as bone marrow, placenta, adipose tissue, teeth, and Wharton’s jelly, a gelatinous substance in the umbilical cord. The ease of their...
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Related Experiment Video

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Exosomes and Bone Disease.

Su-Kang Shan1, Xiao Lin1, Fuxingzi Li1

  • 1Department of Endocrinology and Metabolism, National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory for Metabolic Bone Disease, The Second Xiang-Ya Hospital, Central South University, Changsha, Hunan, China.

Current Pharmaceutical Design
|November 29, 2019
PubMed
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Exosomes facilitate cell communication and show promise in regenerative medicine for bone diseases like osteoporosis. Stem cell-derived exosomes are key to understanding and treating bone metabolism disorders.

Keywords:
Exosomesfracture healingmicroRNAsosteoarthritisosteoporosisregeneration.

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Area of Science:

  • Biomedical science
  • Cell biology
  • Regenerative medicine

Background:

  • Exosomes are crucial for intercellular communication and information exchange.
  • Bone metabolism homeostasis is vital for skeletal health.
  • Osteoporosis, osteoarthritis, and fractures are linked to exosome function.

Purpose of the Study:

  • To review the role of exosomes in bone metabolism.
  • To summarize pathophysiological mechanisms, clinical aspects, and therapeutic potential.
  • To discuss the advantages and challenges of exosome applications.

Main Methods:

  • Literature review of exosomes in bone metabolism.
  • Analysis of pathophysiological mechanisms.
  • Evaluation of clinical relevance and therapeutic effects.

Main Results:

  • Exosomes play a significant role in bone metabolism.
  • Stem cell-derived exosomes exhibit regenerative potential.
  • MicroRNAs (miRNAs) are implicated as major players in exosome function.

Conclusions:

  • Exosomes offer promising therapeutic avenues for bone diseases.
  • Further research is needed to elucidate exact mechanisms.
  • Understanding exosome-mediated communication is critical for bone health.