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Adipose mesenchymal stem cells (AMSCs) are MSCs derived from adipose tissue, which is more accessible and less painful than stem cells extracted from most other sources. Autologous stem cells are those derived from a patient’s own cells while allogeneic stem cells are derived from that of a donor. Lipoaspiration, also known as liposuction, is a possible method for extraction. This is followed by purification and expansion of the cells in vitro. These AMSCs are multipotent, with the capability of forming different tissues, some of which include bone, muscle, neural, and chondrocyte. This explains why AMSCs have been utilized in repairing craniofacial bone defects. They also have potential in treatment of scarred vocal folds.
Adipose mesenchymal stem cells (AMSCs) are MSCs derived from adipose tissue, which is more accessible and less painful than stem cells extracted from most other sources. Autologous stem cells are those derived from a patient’s own cells while allogeneic stem cells are derived from that of a donor. Lipoaspiration, also known as liposuction, is a possible method for extraction. This is followed by purification and expansion of the cells in vitro. These AMSCs are multipotent, with the capability of forming different tissues, some of which include bone, muscle, neural, and chondrocyte. This explains why AMSCs have been utilized in repairing craniofacial bone defects. They also have potential in treatment of scarred vocal folds.
AMSCs have been shown to secrete several growth factors and hyaluronic acid (HA) which balance collagen, with hepatocyte growth factor (HGF) being a major part of those secreted. HGF secreted by AMSCs has been shown, in culture, to attenuate collagen production and fibroblast proliferation. AMSCs also have the ability to produce elastic fibers, something that typically does not appear in a scar environment. In some studies, adipose mesenchymal stem cells have demonstrated anti-inflammatory and chondroprotective properties. Currently, the exact mechanism behind AMSCs is unknown. However, a possible mechanism consists of activation of the cells due to inflammation, with the activated cells then modulating inflammation and cartilage remodeling by prostaglandin E2. The effects for AMSCs seem to also possibly be dose-dependent.
