Research Progress on Exosomes in Osteonecrosis of the Femoral Head. Issue 9 (4th August 2022) - Liu, Xiuzhi
Abstract : Osteonecrosis of the femoral head (ONFH) is a progressive disease that often necessitates hip replacement if hip preservation therapy fails. ONFH places a heavy economic burden and severe psychological pressure on patients. At present, ONFH is treated by either surgical or non‐surgical methods. In clinical practice, stem cells combined with surgery has achieved some positive results, but many problems remain to be resolved. Exosomes are small vesicles of 30–150 nm, which are rich in various nucleic acids, proteins, and small molecules depending on the cells from which they are derived. A growing number of studies have found that exosomes play an important role in tissue damage repair. In comparison with stem cells, exosomes have lower immunogenicity. Also, exosomes can promote cell proliferation and inhibit tumor growth. In addition, exosomes can also be used as natural carriers of drugs. Many studies have shown that exosomes have therapeutic effects in hormone‐induced ONFH. Exosomes have the effect of promoting vascular regeneration and show good application prospects in ONFH. Here, we present a review of studies on the application of exosomes in ONFH to provide a reference for future research. Abstract : Exosomes are vesicles secreted by cells into the extracellular space, which are rich in various nucleic acids, proteins, and small molecules depending on the cells from which they are derived. Exosomes have been shown to play roles in many processes, including intercellular signal transduction, tissue damage repair, and inflammatory responses. In comparison with stem cells, exosomes have lower immunogenicity. Exosomes can promote cell proliferation and inhibit tumor growth. In addition, exosomes can also be used as natural carriers of drugs. Many studies have shown that exosomes have therapeutic effects in hormone‐induced ONFH. Exosomes may prevent the progression of ONFH by promoting angiogenesis and osteogenesis.