However piwi, while expressed in both somatic and germline cells, is required in the terminal filament
for stem cell maintenance but is also needed for cell division in the germline.
While scientists have long known that a group of transcription factors are needed
for stem cell maintenance, the sheer number of possible interactions among them has made the question of which are essential too complicated to address in the laboratory alone.
Not exact matches
While some previous studies found that
maintenance lenalidomide after autologous hematopoietic
stem cell transplant improved overall survival
for newly diagnosed multiple myeloma patients, others showed no benefit to this approach.
For this analysis, 605 patients with newly diagnosed multiple myeloma and treated with continuous lenalidomide (brand name Revlimid) following autologous
stem cell transplant were compared to 604 patients who were treated with placebo or no
maintenance.
«Lenalidomide
maintenance following autologous
stem cell transplant can now be considered a standard of care
for people with multiple myeloma,» says Dr. McCarthy, senior author on the meta - analysis and Principal Investigator of the U.S. study, CALGB (Alliance) 100104.
«By analyzing mice with the WNT10A mutation, as well as tissues from human patients with WNT10A mutations, we found that WNT10A regulates the proliferation, but not the
maintenance, of
stem cells in hair follicles,» said Sarah Millar, PhD, vice chair
for Basic Research in the Department of Dermatology.
BPTF, identified by Dos Santos and colleagues as essential
for mammary
stem cell maintenance, is a protein with a very specialized function.
Kruppel - like factor 4 (KLF4) is required
for maintenance of breast cancer
stem cells and
for cell migration and invasion
«Additionally, these findings point to a promising strategy
for delivering
stem cells to targeted niches
for their long - term
maintenance and generation of functional
cells through augmented
stem cell competition.»
Researchers have demonstrated that the enzymatic activity of R5 receptor - type protein tyrosine phosphatases is a requisite
for the
maintenance of
stem cell properties and tumorigenicity in glioblastoma
cells and could be a promising drug target
for treatment.
Regina Duryagina (Bornhäuser, TUD)-- «Role of Jagged - 1 and extracellular matrix components
for the
maintenance of hematopoietic
stem and progenitor
cells during ex-vivo expansion» (2013)
Further phenotypic characterization revealed that LKB1 is required
for the differentiation and
maintenance of two NCC - derivatives, Schwann
cells and the ENS. Using a model of neural crest
stem cell line, we demonstrated that Lkb1 is key
for neural crest - derived glial commitment.
Arndt K, Grinenko T, Mende N, Reichert D, Portz M, Ripich T, Carmeliet P, Corbeil D, Waskow C. CD133 is a modifier of hematopoietic progenitor frequencies but is dispensable
for the
maintenance of mouse hematopoietic
stem cells.
A lot is known about the transcription factors important
for self - renewal and
maintenance of neural
stem cells, but drugging these is notoriously difficult.
«We hope this research will help inform clinicians into congenital defects related to the formation and
maintenance of arteries and veins, and may also yield new strategies that can coax the development of arteries from
stem cells — which may prove useful
for treating coronary artery disease.»
Adult
stem cells serve as a reservoir of
cells for repair of damaged tissue throughout the life of an individual, but the
maintenance and regeneration of tissues, such as skin, liver, blood and muscle, dramatically decrease with age.
Adult
stem cells are essential
for the
maintenance and regeneration of organs and tissue.
Studies have identified transcription factors such as Stat3, Nanog, and Oct4 as being necessary
for embryonic
stem (ES)
cell self - renewal and
maintenance of pluripotency.