Anyone who has ever wondered about things like “stem cell therapy” and donating stem cells might do well to review the central facts about the subject. Perhaps the distinguishing ability of stem cells is that they are able to create other types of human cells. There’s no other cell that has that ability anywhere in our bodies.One reason scientists are so interested in studying stem cells is they believe these specialized cells can help reveal how human diseases come into existence. If experts can “break the code” about that process, it could be possible to prevent or cure many deadly conditions like cancer and fatal viruses.
The Basic Facts About Stem Cells
Stem cells are the only part of the human anatomy, at any level, that have the ability to replicate themselves into another type of organism. Most stem cells somehow prompt themselves to turn into various specialized cells that are altogether different than their original iteration. The main home of researchers who focus on this field is that some day in the not-so-distant future, we’ll be able to use stem cells to create all sorts of human tissue and organs. A development like that would completely transform the practice of organ transplantation and donation.
Our bodies contain a wide variety of cell types. For example, there are liver and stomach cells, two of many specialize tissue cells. In addition, there are white and red blood cells that have their own specific jobs inside our bodies. When the body grows, however, something has to create new cells to cause the growth. That “something” is stem cells.
Whenever you’re injured, stem cells swing into action to create new cells to replace the damaged ones. The way stems cells achieve this amazing feat is truly unique: the constantly keep dividing until there are enough new cells present to replace injured tissue or create fresh growth.
What Each Category Of Stem Cells Does
There are currently three known kinds of stem cells:
- Induced Pluripotent
Embryonic: Most people are familiar with the role of embryonic stem cells. They create new cells at the time of birth so a newborn child can continue to grow. Embryonic stem cells are part of a very special sub-category, namely “pluripotent” stem cells. That scientific term refers to cells that not only replicate themselves but are able to become a new kind of cell, different from what they originally were.
Multipotent: When standard bodily cells are damaged, or when our bodies grow, adult stem cell take over. They are the source of new cells and are referred to as multipotent. That means they have a limited number of cells they can transform themselves into. For example, blood cells fall into this category. When you lose blood through and injury or when you blood is somehow damaged by radiation or another dangerous substance, the “blood stem cells” are able to replace the lost or damaged cells, whether those lost cells were white, red or platelets. A further example of a multipotent stem cell is in the skin, where “skin stem cells” are able to replace various kinds of skin tissue but nothing else.
Induced pluripotent: These cells, called “iPS” for short, are created by researchers. They’re said to be induced because they don’t occur naturally but are made by taking standard adult cells and completely re-setting their molecular programs so they can turn into any other kind of cell in the body. After that, the induced cells are similar to embryonic ones that have the power to change into something else entirely.
Uses In Therapy and Research
Science has been struggling with the disease process for decades, trying to figure out exactly how a malicious cell or virus comes into being. Stem cells might be the keys to unlock that mystery. For now, a wish list for most researchers who work in the field includes the use of stem cells for the following purposes:
- For studying how human growth occurs: This has been the central aspect of research for decades and led to the idea of finding our how diseased tissue grows and replicates itself
- Learning about how diseases come into being and operate
- Discovering ways to create human tissue for transplants: If the field advances to his level withing a generation or two, it would mean an end to waiting for a heart or lung transplant; the organs could simply be created in a laboratory. There’s no limit on the potential of stem cell research. Huge advances have been made in just the past decade.
- To heal injured tissue: We’re already using stem cells to do this and the results have been encouraging. See the below discussion about burn victims. Others who benefit from this process include people who have lost fragments of limbs or have lost the majority of their skin surface in a vehicular accident.
- To create new blood: Blood donation might cease to exist once science pins down the way to create any type of blood. In many nations, particularly in Africa and Southeast Asia, blood supplies are quite low. When disaster strikes and millions of people need transfusions, those supplies often run out and lead to an international crisis. Fortunately, organizations like the Red Cross are able to supply whole blood and blood plasma to needy sufferers. Ten or more years from now, such tragedies might be averted with the use of synthetic blood made from stem cells.
- To make “replacement” skin: Burn victims and those who suffer disfiguring diseases can receive “new” skin when doctors grow it from skin stem cells that reside just below the top layer of a person’s skin
- For creating entire organs: We’re not there yet, but the goal is to be able to create whole livers, kidneys, hearts, lungs and other organs in the laboratory for use in transplants. The end result would be astounding: no longer would anyone have to wait for a suitable donor. They’d merely have to wait for the lab to grow them a new organ.
Stem cell research is among the most exciting fields of modern science because the possibilities are virtually unlimited. Already, top scientists have been able to create all sorts of cells for therapeutic purposes. In the field of blood research and disease prevention, it’s thought that breakthroughs in stem cell research might be able to offer cures for hundreds of diseases that have plagued mankind for millennia.
One of the challenges for researchers is coming up with funding for studies that can reveal the precise mechanisms of human disease, growth and bodily repair. So far, we’ve only touched the tip of the iceberg in terms of what stem cell research has the potential to produce.