Stem cells are primitive cells with self-replication and multi-directional differentiation potential in human body. Under certain conditions, they can be induced to differentiate into more than 220 kinds of functional cells, such as nerve cells, liver cells and myocardial cells. They are the primitive cells of our body and the primitive cells that form various tissues and organs of the human body. Stem cells exist in early embryos, placenta and its appendages, bone marrow, peripheral blood and adult tissues. According to their developmental potential, stem cells can be divided into three categories: TotipotentStemCell, TSC, multipotent stem cells and UnipotentStemCell. According to the developmental stage, stem cells can be divided into embryonic stem cells (ESC) and adult stem cells (SomaticStemCell).
Stem cells are classified according to their differentiation potential: totipotent stem cells, pluripotent stem cells and pluripotent stem cells.
Totipotent stem cells: have the differentiation potential to form a complete individual, such as embryonic stem cells (ES cells).
Pluripotent stem cells: have the potential to differentiate into a variety of cell tissues. Such as hematopoietic stem cells and nerve cells.
Pluripotent stem cells: They can only differentiate into one or two closely related cell types. Such as stem cells in the basal layer of epithelial tissue and myoblasts in muscle.
Why are stem cells called "universal cells"?
Stem cells are pluripotent cells with the ability of self-replication. Under certain conditions, they can differentiate into a variety of functional cells.
Stem cells can be divided into embryonic stem cells and adult stem cells according to their developmental stages. Stem cells are not fully differentiated and immature cells, which have the potential function of regenerating various tissues and organs and human bodies, and are called "universal cells" in the medical field.
Stem cells are rich in sources. Stem cells from embryos are collectively called embryonic stem cells, and stem cells from adults (including newborns) are collectively called adult stem cells. Bone marrow, peripheral blood, umbilical cord, umbilical cord blood and fat are common sources of stem cells, all of which belong to adult stem cells.
The application of stem cells is the smallest unit of life, and the emergence and development of human beings is the process of self-replication and differentiation of stem cells.
Stem cells are the origin cells of the body and the seed cells that form various tissues and organs of the human body. The aging and pathological changes of the body are caused by the decline in the quantity and quality of stem cells. Therefore, stem cell therapy has been widely used in clinic at present, and it is the most basic raw material and means to treat a variety of intractable diseases in 2 1 century. At present, stem cells are widely used in facial rejuvenation, facial micro-plastic surgery and other beauty fields, autoimmune cell health management, children's cerebral palsy, nerve therapy and other diseases, organ transplantation and biological repair.
First, regenerate skin vitality and restore appearance. Healthy skin is smooth and elastic, and its metabolic function is vigorous.
Stem cells are the fundamental cells to rebuild and restore beautiful appearance, and have significant beauty and hairdressing functions: they can make loose and sagging skin smooth and firm, restore skin elasticity, and reduce skin wrinkles and pigmentation. The cosmetic effect of stem cell anti-aging health care is not only the effect of skin and hair regeneration, but also the external performance of multi-organ and multi-system regeneration and repair and overall function improvement of the body.
Second, comprehensively improve metabolic function, which is the material basis of human life activities.
Stem cells are anti-aging and health care, which can improve the metabolic function of various lipoproteins, effectively reduce the concentration of total cholesterol, triglycerides and low-grade lipoproteins in blood, have the functions of reducing blood fat, blood sugar and weight, and are of great value in preventing cardiovascular diseases, obesity and diabetes.
Third, improve memory and improve brain aging.
Stem cells can differentiate into new nerve cells and provide new cells for the brain, which can effectively improve brain aging. After stem cells are anti-aging, the memory and intelligence of Alzheimer's patients are obviously improved and restored. The curative effect is lasting and stable.
Fourth, improve immune function.
Immunity is the key factor for human body to resist diseases, especially to remove pathogenic microorganisms (bacteria, germs, parasites, etc.). ) enter the human body and monitor and kill tumor cells. Therefore, the immune system is the body's defense force, and immune cells are the combatants in this defense force. The elderly are prone to diseases such as tumors because of the decrease of immune cells, the decrease of immune cell activity and the decrease of disease resistance. The decline of immune function is one of the important signs of aging. Stem cell transplantation can effectively improve people's immune function. Therefore, stem cell transplantation is one of the most effective ways to maintain human health and aging.