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There have been several reports suggesting that cord blood may contain other types of stem cells which can produce specialised cells that do not belong to the blood, such as nerve cells. These findings are highly controversial among scientists and are not widely accepted.
Women typically sign up for cord blood banking between the 28th and 34th week of pregnancy. Some private banks will allow for early or late sign up, but most public storage facilities won’t accept any mother past her 34th week. While most banks don’t officially sign up mothers until a certain time, it’s never too early to research.
Banked cord blood is most abundant in white blood cells and stem cells. While a lot of attention is paid to the stem cells, there are approximately 10 times more total nucleated cells (TNCs) than stem cells in any cord blood collection. TNCs are basically white blood cells, or leukocytes; they are the cells of the immune system that protect the body. Despite stem cells comprising one-tenth of most collections, cord blood is still considered a rich source of hematopoietic (he-mah-toe-po-ee-tic) stem cells (HSCs). HSCs are often designated by the marker CD34+. Hematopoietic stem cells can become two categories of cells: myeloid and lymphoid cells. Myeloid cells go on to form your red blood cells, platelets, and other cells of the blood. Lymphoid cells go on to become the B cells and T cells and are the basis for the immune system. Cord blood also contains mesenchymal (meh-sen-ki-mal) stem cells (MSCs), but they are much more abundant in cord tissue, which we will discuss in a minute.
A major limitation of cord blood transplantation is that the blood obtained from a single umbilical cord does not contain as many haematopoeitic stem cells as a bone marrow donation. Scientists believe this is the main reason that treating adult patients with cord blood is so difficult: adults are larger and need more HSCs than children. A transplant containing too few HSCs may fail or could lead to slow formation of new blood in the body in the early days after transplantation. This serious complication has been partially overcome by transplanting blood from two umbilical cords into larger children and adults. Results of clinical trials into double cord blood transplants (in place of bone marrow transplants) have shown the technique to be very successful. Some researchers have also tried to increase the total number of HSCs obtained from each umbilical cord by collecting additional blood from the placenta.
It depends on who you ask. Although commercial cord blood banks often bill their services as “biological insurance” against future diseases, the blood doesn’t often get used. One study says the chance that a child will use their cord blood over their lifetime is between 1 in 400 and 1 in 200,000.
In the United States, the Food and Drug Administration regulates any facility that stores cord blood; cord blood intended for use in the person from whom it came is not regulated, but cord blood for use in others is regulated as a drug and as a biologic. Several states also have regulations for cord blood banks.
Much research is focused on trying to increase the number of HSCs that can be obtained from one cord blood sample by growing and multiplying the cells in the laboratory. This is known as “ex vivo expansion”. Several preliminary clinical trials using this technique are underway. The results so far are mixed: some results suggest that ex vivo expansion reduces the time taken for new blood cells to appear in the body after transplantation; however, adult patients still appear to need blood from two umbilical cords. More research is needed to understand whether there is a real benefit for patients, and this approach has yet to be approved for routine clinical use.
Tracey said she felt lucky since she banked Anthony’s cord blood with a private company. And Osteopetrosis is one of 80 diseases listed by many cord blood companies in their marketing material as treatable with stem cells.
Mother’s Day is just around the corner and we are celebrating by sharing one of our employee’s journey as a new mom. Tiffany shares 5 things she’s learned being a new parent to a 6 month old. Can you relate?
It’s hard to ignore the ads for cord blood banks, offering a lifetime of protection for your children. If you’re an expectant mom, there’s information coming at you constantly from your doctor’s office, magazines, online, and perhaps even your yoga class.
Mothers and families can donate blood from their child’s umbilical cord, which contains valuable stem cells used in the treatment of over 80 diseases. There are over half a million donated cord blood units around the world, with thousands more added every year.
Fill out medical history sheets. The bank will ask you and your doctor to fill out medical forms that cover your infant, adolescent, and adult health. This helps the bank understand your general medical health to see if your child’s cord blood is useable in treatment. Overall, public banks usually accept healthy mothers without a history of severe inherited conditions.
^ Roura S, Pujal JM, Gálvez-Montón C, Bayes-Genis A (2015). “Impact of umbilical cord blood-derived mesenchymal stem cells on cardiovascular research”. BioMed Research International. 2015: 975302. doi:10.1155/2015/975302. PMC 4377460 . PMID 25861654.
The majority of programs that accept cord blood donations require the mother to sign up in advance. In the united States, the current requirement is to sign up by the 34th week of pregnancy. This cannot be over-stressed; time and time again, mothers who want to donate are turned away because they did not inquire about donation until it was too late.
Cord blood (short for umbilical cord blood) is the blood that remains in the umbilical cord and placenta post-delivery. At or near term, there is a maternal–fetal transfer of cells to boost the immune systems of both the mother and baby in preparation for labor. This makes cord blood at the time of delivery a rich source of stem cells and other cells of the immune system. Cord blood banking is the process of collecting the cord blood and extracting and cryogenically freezing its stem cells and other cells of the immune system for potential future medical use.
CBR Clients: Did you know that when you refer a friend, and they preserve their baby’s stem cells with us, you receive a free year of cord blood storage? After your first referral, you start earning even more rewards. (Exclusions apply): http://bit.ly/CBRreferafriend
When an immediate family member has a disease that requires a stem cell transplant, cord blood from a newborn baby in the family may be the best option. There is a 25% chance, for example, that cord blood will be a perfect match for a sibling, because each child shares one of its two HLA genes with each parent. Occasionally cord blood will be a good match for a parent if, by chance, both parents share some of the six HLA antigens. The baby’s cord blood is less likely to be a good match for more distant relatives. The inventories of unrelated cord blood units in public cord blood banks are more likely to provide appropriate matches for parents and distant relatives, as well as for siblings that do not match.
After a baby is born, cord blood is left in the umbilical cord and placenta. It is relatively easy to collect, with no risk to the mother or baby. It contains haematopoietic (blood) stem cells: rare cells normally found in the bone marrow.
Since most banks require mothers to sign up for donation between the 28th and 34th week of pregnancy, families must decide to donate ahead of time. If you are considering a public bank for your child’s cord blood, contact the bank and make sure you still have time.
Another contributor to cord blood banking costs is the quality of the collection kit. Cheaper banks typically use flimsy collection kits. To insure the survival of newborn stem cells, the shipping container should be thermally insulated to maintain kit temperature during cord blood shipments.
“This is a medical service that has to be done when your baby’s cells arrive and you certainly want them to be handled by good equipment and good technicians,” says Frances Verter, Ph.D., founder and director of Parent’s Guide to Cord Blood Foundation, a nonprofit dedicated to educating parents about cord blood donation and cord blood therapists. “It’s just not going to be cheap.” Although the American Academy of Pediatrics (AAP) states cord blood has been used to treat certain diseases successfully, there isn’t strong evidence to support cord blood banking. If a family does choose to bank cord blood, the AAP recommends public cord blood banking (instead of private) to reduce costs.
On average, the transport time for stem cells from the hospital to CBR’s lab is 19 hours. CBR partners with Quick International, a private medical courier service with 30 years of experience in the transportation of blood and tissue for transplant and research.
Medical staff at the public cord blood bank will check to see if you can donate. If you have had a disease that can be given to another person through blood-forming cells, such as hepatitis B, hepatitis C, or HIV (the AIDS virus), you will likely not be able to donate. However, other medical reasons may still allow you to donate, for example, hepatitis A or diabetes only during your pregnancy (gestational diabetes). The staff at the public cord blood bank will tell you.
Along with cord blood, Wharton’s jelly and the cord lining have been explored as sources for mesenchymal stem cells (MSC), and as of 2015 had been studied in vitro, in animal models, and in early stage clinical trials for cardiovascular diseases, as well as neurological deficits, liver diseases, immune system diseases, diabetes, lung injury, kidney injury, and leukemia.
Unlike other banks, CBR uses a seamless cryobag for storage. The seamless construction decreases the potential for breakage that can occur in traditional, seamed-plastic storage bags. Prior to storage, each cryobag is placed in a second overwrap layer of plastic, which is hermetically sealed as an extra precaution against possible cross contamination by current and yet unidentified pathogens that may be discovered in the future. CBR stores the stem cells in vaults, called dewars, specially designed for long-term cryostorage. The cord blood units are suspended above a pool of liquid nitrogen that creates a vapor-phase environment kept at minus 196 degrees Celsius. This keeps the units as cold as liquid nitrogen without immersing them in liquid, which can enable cross-contamination. Cryopreserved cord blood stem cells have proven viable after more than 20 years of storage, and research suggests they should remain viable indefinitely.
Stem cells are injected into the veins during a peripheral blood transplant, and naturally work their way to the bone marrow. Once there, the new cells start increasing healthy blood count. Compared to bone marrow transplants, cells from peripheral blood are usually faster, creating new blood cells within two weeks.
Through these two means, we are always producing more cells. In fact, much of your body is in a state of constant renewal because many cells can live for only certain periods of time. The lifespan for a cell in the stomach lining is about two days. Red blood cells, about four months. Nerve and brain cells are supposed to live forever. This is why these cells rarely regenerate and take a long time if they do.
Umbilical cord blood is useful for research. For example, researchers are investigating ways to grow and multiply haematopoietic (blood) stem cells from cord blood so that they can be used in more types of treatments and for adult patients as well as children. Cord blood can also be donated altruistically for clinical use. Since 1989, umbilical cord blood transplants have been used to treat children who suffer from leukaemia, anaemias and other blood diseases.
Current applications for newborn stem cells include treatments for certain cancers and blood, metabolic and immune disorders. Additionally, newborn stem cell preservation has a great potential to benefit the newborn’s immediate family members with stem cell samples preserved in their most pristine state.
^ Reddi, AS; Kuppasani, K; Ende, N (December 2010). “Human umbilical cord blood as an emerging stem cell therapy for diabetes mellitus”. Current stem cell research & therapy. 5 (4): 356–61. doi:10.2174/157488810793351668. PMID 20528762.
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Florida Hospital for Children is conducting an FDA-regulated phase I clinical trial to investigate the use of a child’s stem cells derived from their own cord blood as a treatment for acquired sensorineural hearing loss.
If everyone donated cord blood to public registries for the ‘common good’ this would increase the chances of someone benefiting from a double cord blood transplant. This far outweights the actual probability of the person who donated the sample being able to usefully use it for themself.
The biggest advantage for cord blood is the “immaturity” of the cells, which means transplants do not require an exact match. For bone marrow and peripheral blood transplants, donors need to match the patient’s cellular structure. However, cord blood cells can adapt to a wide variety of patients, and don’t require donor matching. Chances for graft-versus-host disease are also much lower for cord blood transplants.
iPS cells are artificially-made pluripotent stem cells. This technique allows medical staff to create additional pluripotent cells, which will increase treatment options for patients using stem cell therapy in the near future.