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Stem Cell? |
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| What are Stem Cells |
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The human body is comprised of about 210 different kinds of cells. Each cell owns a unique character and performs a life-supporting function. However, as most cells have a definite life span, when cells die, new cells get replace them on a continuous basis.
Stem cells differ from other kinds of cells in the body. All stem cells - regardless of their source - have three general properties: they are capable of dividing and renewing themselves for long periods; they are undifferentiated; and they can develop into specialized cell types.
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| Classification of Stem Cells |
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Stem cells can be classified by source (where they are taken from) and by behavior (their ability to form cells of multiple tissue types). Embryonic stem cells are collected from the very early embryo (fertilized egg), and adult stem cells can be found in limited quantities throughout the human body.
¡°Embryonic stem cells¡±, as their name suggests, are derived from embryos. Whenever the fertilized egg repeats cell division and differentiation, about two trillion cells will be created. Therefore, the embryonic stem cells can be called as ¡°Totipotent Stem Cell¡±, carrying infinite ability of differentiating into all of the cell consists of human body.
As ¡°Adult Stem Cells¡± are just before differentiating into the cell of organ including liver, bone and blood, they can be collected from many tissues including umbilical cord blood, bone marrow, adipose tissue and peripheral blood. In the adult stem cell, various kinds of cells exist: Hematopoietic Stem Cells (HSCs), Mesenchymal Stem Cells (MSCs) and Neural Stem Cells. HSCs have the ability to differentiate into all of the blood lineages including red blood cells, lymphocytes, granulocytes, and platelets. And, MSCs also can differentiate into cartilage, osteoblast and fat. Finally, Neural Stem Cells can be from the nervous system. |
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Embryonic Stem Cells |
Adult Stem Cells |
| Sources |
Fertilized eggs |
Body organs and tissues
(bone marrow, umbilical cord blood, peripheral blood, and fat tissue) |
| Limitations |
Ability for unlimited multiplication |
Limited multiplication |
| Differentiations |
Ability to differentiate into all kinds of human body cells |
Marrow, cartilage, fat, liver, muscles, blood cells, etc |
| Side effects |
Possibility to form teratoma ; ethical issues |
Less side effects; no ethical issues |
| Ethical concerns |
Destruction of human blastocysts |
No major ethical concerns have been raised |
| Clinical applications |
No current therapeutic uses |
Numerous current therapeutic uses |
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¡Ø We, KSCB, settled the problem of lack of the number of cell by reaching cooperative agreement of technology license with
Regenetech¢ç Inc. |
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| ABOUT US / SITE MAP / PRIVACY POLICY / CONTACT US |
NAME£º KOREA STEM CELL BANK / BUSINESS REGISTRATION NO.:120-86-90310 / CEO: KIM KI WOONG
HEAD OFFICE: 3F DAEKYUNG B/D, 912-18,DAECHI-DONG,GANGNAM-GU,SEOUL,KOREA TEL: +82-2-511-2322 FAX +82-2-511-8242
R&D CENTER: 159-3, SAM-DONG, KWANGJU-SI, GYEONGGI-DO, KOREA |
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