Cloning technically means the production of genetically identical organisms. The first clone of animal was Dolly, the famous Edinburgh sheep. Although technically not an exact replica of her mother (and therefore not a true clone), the revolutionary part of the experiment was that it overturned the long-held view that non-sex cells of an adult (somatic cells e.g. of liver, lungs. Brain, skin etc.) were differentiated to such a degree that they lost any potential to develop into a new adult organism or in other words other genes in the cell became permanently inactive. The other major challenge was to be able to initiate the multiplication of the genetically altered cell and then to provide the proper environment in which the growth of the new organism could take place.
The Cairo researcher took small amounts of skin from the scalps of the children, isolated the hair follicle stem cells that stimulate hair production, and grew them in the lab, increasing the number of cells. After one month, she put the cells back into the scalps of the children, with numerous injections across the bald areas of their heads. Six months after the hair cloning treatment, an evaluation showed a 50% increase in hair in more than half of the subjects. Dr. Fawzi took new skin samples and examined the hair follicles themselves and could see that the injected stem cells had migrated into the follicles. There, the stem cells stimulated the follicles to transition from a dormant phase to a hair-generating phase. (Posted on Bloomberg.com, July 10, 2009)
In the recent study published in Nature it is repored that in mice large skin wounds can regenerate new hair follicles.Report by Dr. George Cotsarelis, a dermatology professor at the University of Pennsylvania School of Medicine in Philadelphia underlines that in regenerating woulds skin undergoes processes similar to these during embryonic development which results in formation of new hair follicles. This process happens in wounds of adult animals. This fact shows that mammals and humans have better regenerative abilities than commonly believed.
These new findings could provide basis for developing new treatment strategy for male-pattern baldness and other types of hair loss. It is shown that hair follicles newly formed from wounds functioned normally, cycle through the normal stages of hair cycle. More importantly, hair fibers that they produce are indistinguishable from pre-existing hairs with one exception - lack of pigmentation.
Finding details:
It appears that as the part of this hair neogenesis non-hair skin stem cells were able to transform into hair cell types. It was shown that the stem cells that gave rise to de novo hair follicles were not stem cells usually associated with hair follicle development (i.e. bulge stem cells). Dr. Cotsarelis comments: "...They're actually coming from epidermal cells that don't normally make hair follicles. So they're somehow reprogrammed and told to make a follicle..."
Dr. Cotsarelis is affiliated with with Follica Inc., that has a license for the patent on this process of hair regeneration from wounds . He predicts that it will be more than 5 years before a baldness treatment will be available.
These experiments have shown that Inducer role of Fibroblasts of Dermal Papilla, DP (and or Dermal Sheath Cell ,DSC) [DP cells (fibroblasts) can be grown and multiplied in culture so that a small number can produce enough hair follicles to cover an entire bald scalp.] to induce Hair Follicle formation esp. in presence of Pluripotent Progenitor Stem cells -Epithelial cells of Matrix keratinocytes.
Methods of cloning:
While considerable work remains on turning hair cloning methods into a viable treatment for hair loss, there are four experimental techniques described in a 2008 paper in Hair Transplant Forum International — the primary medical journal in the field of hair transplantation — that shed some light on how cloning could become a viable treatment in hair restoration. * Teumer J. Strategies for follicular cell implantation. Hair Transplant Forum International 2008.
- Implant DP cells into the dermis
- Cause the overlying skin cells (keratinocytes) to be transformed into hair follicles
- Referred to as “Follicular neo-genesis” since new hair is formed on previously bald scalp
- DP cells induce the keratinocytes of the miniaturized follicles to grow into terminal hairs
- Advantage: existing miniaturized follicles already have the proper structure and orientation to produce a natural look
- Keratinocytes and DP cells are cultured together until partial hair formation takes place
- These culture-grown hairs (“proto-hairs”) are implanted in the skin
- Advantage: better hair direction because of the orientation of the proto-hair
- DP cells alone or in combination with keratinocytes are placed in a matrix of collagen or synthetic materials
- Matrix acts like a scaffold to help cells organize to form a follicle and direct its growth
In a modification of this procedure, the bulbs of the hair are separated from the shafts and then their cells
The focus of such work is to identify the defect that causes the problem we wish to fix and then to develop a drug, enzyme blocker, or another approach to address the problem. There are many baby steps taking us to that cure and Dr. Markus M Nothen of the
1. Aderans Research Institute: “dedicated to developing state-of-the-art cell engineering solutions for hair loss.”
2. Intercytex: It promotes “an autologous hair regeneration therapy, a suspension of human dermal papilla (DP) cells, for the treatment of male pattern baldness and female diffuse alopecia.” According to latest news the company has gone bust and has closed down the research operation in January 2010.
3. Follica: “Developing novel therapies for conditions and disorders of the hair follicle, the epicenter for the development and replenishment of human hair and skin.”
4. Histogen: It is marketing “a proprietary liquid formula created by the culturing of newborn fibroblasts in an embryonic-like environment and then harvesting the naturally secreted growth factors, anitoxidants and other synergistic bioproducts that are produced” that, it claims, may have “significant applications” as “an injectable for hair growth.”
5. Luna Innovations: It is use “nanomedicine” to stimulate new hair growth.
6. Hair Science Institute: Dr. Coen Gho’s clinic that claims a superior method for individual follicle transplantation.
7. Phoenix Bio: A Japanese biotech company that “propagates hair papillar cells which are the key element in hair growth and develops therapies that enable the implantation of these cells on patients thus regenerating the ability of the patient’s scalp to produce hair naturally.”
8. Shisheido Research: Another Japanese company that is doing research into hair multiplication technologies.
9. Bernstein Medical Center for Hair Restoration: An advanced hair transplantation clinic, the Bernstein Center also follows closely developments in hair cloning technologies and is a good source for a
“hands on” reality check on what is realistic at the moment.
10.Doctors of St Vincent’s Hospital in Melbourne and Melbourne University in Australia with the leadership of Professor Sinclair are also in to stem cell research according to latest report