Might be a broad-spectrum approach to treating specific forms of
alopecia. Looks like MMP-2 plays a role in anagen. Still - like
low-level laser therapy - it's not a method you want to mix with cancer
cells.
Rumor out of osteoscreen indicates that phase one clinical trials with
PSI were successful. While PSI is a potent cancer killer (blocking the
proteasome also blocks NFKB activation), PSI is probably not good for
neurodegnerative conditions like Parkinson's or Alzheimer's in which the
proteasome stops clearing out misfolded proteins. Whether or not PSI
crosses the blood-brain barrier or even gets into the blood from the
skin has not yet been determined.
FASEB J. 2004 Feb;18(2):385-7. Epub 2003 Dec 04. Related Articles, Links
Click here to read
Thymosin beta4 increases hair growth by activation of hair follicle
stem cells.
Philp D, Nguyen M, Scheremeta B, St-Surin S, Villa AM, Orgel A,
Kleinman HK, Elkin M.
Cell Biology Section, NIDCR, National Institutes of Health,
Bethesda, Maryland 20892, USA.
Thymosin beta4, a 43-amino acid polypeptide that is an important
mediator of cell migration and differentiation, also promotes
angiogenesis and wound healing. Here, we report that thymosin beta4
stimulates hair growth in normal rats and mice. A specific subset of
hair follicular keratinocytes in mouse skin expresses thymosin beta4 in
a highly coordinated manner during the hair growth cycle. These
keratinocytes originate in the hair follicle bulge region, a niche for
skin stem cells. Rat vibrissa follicle clonogenic keratinocytes, closely
related, if not identical, to the bulge-residing stem cells, were
isolated and their migration and differentiation increased in the
presence of nanomolar concentrations of thymosin beta4. Expression and
secretion of the extracellular matrix-degrading enzyme matrix
metalloproteinase-2 were increased by thymosin beta4. Thus, thymosin
beta4 accelerates hair growth, in part, due to its effect on critical
events in the active phase of the hair follicle cycle, including
promoting the migration of stem cells and their immediate progeny to the
base of the follicle, differentiation, and extracellular matrix
remodeling.
PMID: 14657002 [PubMed - in process]
[tp][cp]
alopecia. Looks like MMP-2 plays a role in anagen. Still - like
low-level laser therapy - it's not a method you want to mix with cancer
cells.
Rumor out of osteoscreen indicates that phase one clinical trials with
PSI were successful. While PSI is a potent cancer killer (blocking the
proteasome also blocks NFKB activation), PSI is probably not good for
neurodegnerative conditions like Parkinson's or Alzheimer's in which the
proteasome stops clearing out misfolded proteins. Whether or not PSI
crosses the blood-brain barrier or even gets into the blood from the
skin has not yet been determined.
FASEB J. 2004 Feb;18(2):385-7. Epub 2003 Dec 04. Related Articles, Links
Click here to read
Thymosin beta4 increases hair growth by activation of hair follicle
stem cells.
Philp D, Nguyen M, Scheremeta B, St-Surin S, Villa AM, Orgel A,
Kleinman HK, Elkin M.
Cell Biology Section, NIDCR, National Institutes of Health,
Bethesda, Maryland 20892, USA.
Thymosin beta4, a 43-amino acid polypeptide that is an important
mediator of cell migration and differentiation, also promotes
angiogenesis and wound healing. Here, we report that thymosin beta4
stimulates hair growth in normal rats and mice. A specific subset of
hair follicular keratinocytes in mouse skin expresses thymosin beta4 in
a highly coordinated manner during the hair growth cycle. These
keratinocytes originate in the hair follicle bulge region, a niche for
skin stem cells. Rat vibrissa follicle clonogenic keratinocytes, closely
related, if not identical, to the bulge-residing stem cells, were
isolated and their migration and differentiation increased in the
presence of nanomolar concentrations of thymosin beta4. Expression and
secretion of the extracellular matrix-degrading enzyme matrix
metalloproteinase-2 were increased by thymosin beta4. Thus, thymosin
beta4 accelerates hair growth, in part, due to its effect on critical
events in the active phase of the hair follicle cycle, including
promoting the migration of stem cells and their immediate progeny to the
base of the follicle, differentiation, and extracellular matrix
remodeling.
PMID: 14657002 [PubMed - in process]
[tp][cp]