What are Stem Cells? – Types, Applications and Sources
By daniellenierenberg
Stem cells are special human cells that can develop into many different types of cells, from muscle cells to brain cells.
Stem cells also have the ability to repair the damaged cells.These cells have strong healing power. They can evolve into any types of cell.
Researches are going on and it is believed that stem cell therapies can cure ailments like paralysis and Alzheimers as well. Let us have a detailed look at stem cells, its types and functions.
Also Read: Gene Therapy
Stem cells are of the following different types:
The fertilized egg begins to divide immediately. All the cells in the young embryo are totipotent cells. These cells form a hollow structure within a few days. Cells in one region group together to form the inner cell mass. This contains pluripotent cells that make up the developing foetus.
The embryonic stem cells can be further classified as:
These stem cells are obtained from developed organs and tissues. They can repair and replace the damaged tissues in the region where they are located. For eg., hematopoietic stem cells are found in the bone marrow. These stem cells are used in bone marrow transplants to treat specific types of cancers.
These cells have been tested and arranged by converting tissue-specific cells into embryonic cells in the lab. These cells are accepted as an important tool to learn about normal development, onset and progression of the disease and also helpful in testing various drugs. These stem cells share the same characteristics as embryonic cells do. They also have the potential to give rise to all the different types of cells in the human body.
These cells are mainly formed from the connective tissues surrounding other tissues and organs known as the stroma. These mesenchymal stem cells are accurately called stromal cells. The first mesenchymal stem cells were found in the bone marrow that is capable of developing bones, fat cells, and cartilage.
There are different mesenchymal stem cells that are used to treat various diseases as they have been developed from different tissues of the human body. The characteristics of mesenchymal stem cells depend on the organ from where they originate.
Following are the important applications of stem cells:
This is the most important application of stem cells. The stem cells can be used to grow a specific type of tissue or organ. This can be helpful in kidney and liver transplants. The doctors have already used the stem cells from beneath the epidermis to develop skin tissue that can repair severe burns or other injuries by tissue grafting.
A team of researchers have developed blood vessels in mice using human stem cells. Within two weeks of implantation, the blood vessels formed their network and were as efficient as the natural vessels.
Stem cells can also treat diseases such as Parkinsons disease and Alzheimers. These can help to replenish the damaged brain cells. The researchers have tried to differentiate embryonic stem cells into these type of cells and make it possible to treat diseases.
The adult hematopoietic stem cells are used to treat cancers, sickle cell anaemia, and other immunodeficiency diseases. These stem cells can be used to produce red blood cells and white blood cells in the body.
Stem Cells originate from different parts of the body. Adult stem cells can be found in specific tissues in the human body. Matured cells are specialized to conduct various functions. Generally, these cells can develop the kind of cells found in tissues where they reside.
Embryonic Stem Cells are derived from 5-day old blastocysts that develop into embryos and are pluripotent in nature. These cells can develop any type of cell and tissue in the body. These cells have the potential to regenerate all the cells and tissues that have been lost because of any kind of injury or disease.
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What are Stem Cells? - Types, Applications and Sources
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