Human stem cells have shown potential in medicine as they can transform to various specialized cell types such as
bone and cartilage cells.
In a study using human muscle tissue, scientists in Children's Stem Cell Research Center - led by Johnny Huard, PhD, and Bruno Péault, PhD - isolated and characterized stem cells taken from blood vessels (known as myoendothelial cells) that are easily isolated using cell - sorting techniques, proliferate rapidly and can be differentiated in the laboratory into muscle,
bone and cartilage cells.
Human stem cells show much promise for regenerative medicine because they can transform into various specialized cell types, including
bone and cartilage cells.
Not exact matches
This may entail making small holes in the
bone to allow new
cartilage to grow (microfracture), taking
cartilage from another part of the athlete's knee
and transplanting it into the defect (osteochondral autograft transfer), taking
cartilage cells from the knee
and then having them grown in a lab for later re-implantation (autologous chondrocyte implantation), or taking
cartilage from a person who has passed away
and placing it in the defect (osteochondral allograft transfer).
Those
cells affect skin color, ear
cartilage, facial
bone formation,
and the adrenal glands, which produce stress hormones
and testosterone — all of which differ in domesticated
and undomesticated animals.
Other adult stems
cells exist — such as hematopoietic stem
cells, which can generate all types of blood
cell and mesenchymal stem
cells, which can turn into
bone, fat
and cartilage cells.
Sen
and his colleagues tested sucralose, a popular low - calorie sweetener, on stem
cells —
cells that could change into mature fat, muscle,
cartilage or
bone cells — taken from human fat tissue.
Cartilage,
bone, skin
and egg
cells are now regulated as tissues or under similar rules.
Current research is looking at why inhibiting certain molecules, such as mouse protein Stat3, promote muscle regeneration in mice
and how to engineer orthopedic implants from stem
cells to replace damaged
cartilage and bone, but the results of that effort aren't expected to be necessarily aimed at the old.
«No reliable approach is currently available for complete restoration of damaged articular
cartilage,» said Dr. Bai - wen Qi, «in this study, CS / PVA gel was combined with rabbit
bone marrow stromal
cells (BMSCs) transfected with hTGFβ - 1
and used to repair rabbit articular
cartilage defects
and the repair effect was evaluated.»
By monitoring stem
cell differentiation on gels that mimic the stiffness
and nanofibrous structure of biological tissue, researchers have identified the specific molecules that stem
cells use when selecting
bone and cartilage fates.
«About five percent of people have some kind of
cartilage tumor in their
bones,
and in most cases it's because the growth - plate
cartilage cells weren't fully replaced by
bone tissue,» Alman said.
Within a few weeks, the mesenchymal stem
cells have been modified to form
cartilage tissue,
and within months, the site becomes calcified, forming natural
bone containing
bone marrow
cells.
Cohen suspects that the protein triggers off a sequence of events by which the raw stem
cells — the «ancestors» of
bone,
cartilage, skin, ligament, marrow, muscle
and tendon
cells — are converted into
bone cells.
Unlike the skin
cells from which they originated, the human iPS
cells created from FOP patients show increased
cartilage formation
and increased
bone mineralization, two critical steps that are necessary to form mature
bone.
Since the 1970s tissue engineers have been figuring out how to grow skin,
bone,
cartilage,
and even parts of vital organs using
cells harvested directly from patients.
Stem
cells from adult
bone marrow normally generate
bone, muscle,
cartilage and fat cellsa limited set compared with embryonic stem
cells, which can spawn the full spectrum of adult tissues.
• News from the World of Adult - Stem
Cell Research • At the University of California at Los Angeles, Marc Hedrick's team used human adult fat
cells extracted during liposuction to make
cells resembling
cartilage,
bone,
and muscle.
Additional problems cropped up in March, however, when New Scientist reported that a single image had appeared three different times in data from Verfaillie's lab — once referring to
bone and once to
cartilage in a 2001 Blood paper about human MAPCs,
and once again to describe
bone cells in a 2006 patent application.
I think so because it's a disease that affects
cartilage and bone cell differentiation.
In a laboratory dish —
and, presumably, also inside the body — these
cells readily multiply
and give rise to various structural
cells, such as fat, muscle,
bone, tendon, ligament
and cartilage.
Previous research shows that certain fat
cells can be coaxed to turn into other tissue, including skin,
bone,
and cartilage.
As development proceeds, neural crest
cells break away, migrating from head to toe to form tissues involved in pigmentation, muscles, teeth,
bone,
cartilage,
and adrenal glands, which produce stress hormones as well as testosterone.
Zika virus can infiltrate the
cells that give rise to
bone,
cartilage and muscles in the head, researchers report September 29 in
Cell Host & Microbe.
Over time, trauma to the vertebrae induces dormant
cells to activate,
and the tail will regenerate with an underlying tube of
cartilage rather than separate vertebral
bones.
The team discovered that a certain subset of
cartilage - making
cells, known as chondrocytes, replicate themselves, make other
bone cells and drive
bone growth — findings that could lead to new treatments for children with facial deformities who normally have to wait until adulthood for corrective surgery.
Ono said one of the challenges in the
bone and cartilage field is that stem
cells haven't really been identified.
The two
cell types formed structures reminiscent of
bone growth plates —
cartilage on one side,
bone and marrow on the other, they report online 6 September in the Proceedings of the National Academy of Sciences.
These
cells can be used in a variety of tissue types, including
bone,
cartilage, fat, skeletal muscle, smooth muscle
and cardiac muscle.
As a typical child's
bones elongate,
cartilage cells called chondrocytes mature
and then die, allowing hard, bony material to supplant them.
At that key point, Takebe added two more types of
cell known to help to recreate organ - like function in animals: endothelial
cells, which line blood vessels, taken from an umbilical cord;
and mesenchymal
cells, which can differentiate into
bone,
cartilage or fat, taken from
bone marrow.
Novel stem -
cell technology developed at Swinburne will be used to grow the massive number of stem
cells required for a new hand - held 3 - D printer that will enable surgeons to create patient - specific
bone and cartilage.
The mesoderm, for example, gives rise to key
cell types, including cardiac
and skeletal muscle, connective tissue,
bone, blood vessels, blood
cells,
cartilage and portions of the kidneys
and skin.
Researchers at the Stanford University School of Medicine have mapped out the sets of biological
and chemical signals necessary to quickly
and efficiently direct human embryonic stem
cells to become pure populations of any of 12
cell types, including
bone, heart muscle
and cartilage.
In other words, adult stem
cells can differentiate (turn into) skin,
bone and cartilage, in addition to secreting other beneficial growth
and repair factors which can «turn on» the body's native ability to repair itself.
Current strategies for
cell delivery in
cartilage and bone regeneration.
Additionally, ERCs were reported to be able to differentiate into, or become,
cells from the three different germ layers (see the previous post on MSCs for more details): mesoderm (muscle,
bone, fat,
cartilage,
and endothelial
cells), ectoderm (neurons),
and endoderm (liver, pancreas,
and lung
cells)(Meng et al., 2007; Patel et al., 2008).
A hand - held «bio pen» fed with bioink that will allow surgeons to 3D print patient - specific
cartilage cells on to knee
and hip joints to repair
and replace
cartilage which is the «shock absorber» for our long
bones.
Because stem
cells can become
bone, muscle,
cartilage and other specialized types of
cells, they have the potential to treat many diseases, including Parkinson's, Alzheimer's, diabetes
and cancer.
Stem
cells from fat have the ability to mature into other types of specific
cells, including muscle,
bone and cartilage, but how many other types is still unknown.
Histopathology in Tg197 mice is characterized by infiltration of inflammatory
cells, synovial hyperplasia, articular
cartilage destruction
and bone erosion symptoms, closely resembling those of human rheumatoid arthritis.
Specifically, MSCs are usually confirmed to be MSCs by showing that they can differentiate into three different, standard mesenchymal
cell types: osteocytes (
bone), chondrocytes (
cartilage),
and adipocytes (fat).
«What is more, the technique identifies key genes
and enriched gene ontology pathways, as well as categories related to stem
cell differentiation —
and specifically toward osteochondral lineages (that is, related to
bone and cartilage tissue growth).»
2D nanoparticles known as nanosilicates can be used to grow
bone and cartilage tissue from human mesenchymal stem
cells, according to new gene sequencing experiments by researchers at Texas A&M University in the US.
So researchers have been taking readily available
and noncontroversial mesenchymal stem
cells (also called
bone marrow stromal stem
cells that can form
bone,
cartilage and fat
cells)
and using a chemical process to turn them, or as researchers say, differentiate them into Schwann
cells.
MSCs hold great potential for the field of regenerative medicine, as they can become many different types of
cells (they're «multipotent»), most typically
bone,
cartilage,
and fat
cells.
Celltex charges $ 6,500 to remove mesenchymal stem
cells — adult
cells that can morph into muscle,
bone,
cartilage and fat
cells — from a small piece of fat it removes from patients» stomachs.
Figure 2: Representative histology images of A: wild type
and B: Tg197 animals at 7 weeks of age depicting the symptoms of Infiltration of inflammatory
cells, Synovial hyperplasia, Articular
cartilage destruction
and Bone erosions evident as Tg5453 arthritic pathology.
These patented, next - generation stem
cell injection procedures utilize an individual's own
bone - marrow derived stem
cells and blood PRP / platelet rich plasma mixtures to boost the body's own ability to heal damaged muscles, tendons, ligaments,
cartilage, spinal disc, or
bone.
Human embryonic stem
cells can turn into a variety of different
cell types, including (A) gut, (B) neural
cells, (C)
bone marrow
cells, (D)
cartilage, (E) muscle,
and (F) kidney
cells.