CD90

2017-09-30T09:16:12Z

124.190.98.114: /* Use in stem cell biology */ Unsubstantiated statement, which is not scientifically accurate either (human hematopoietic stem cells are NOT thy-1 lo)

{{Infobox_gene}}
{| class="infobox bordered" style="width: 260px; text-align: left; font-size: 80%;"
|+ style="font-size: larger;" | '''Thy1/CD90'''
|-
! '''Claim to fame''':
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*Smallest and one of the most conserved members of the immunoglobulin family
*Lead to the discovery and characterization of GPI anchor
*lead to the discovery of tissue specific differential glycosylation
*Most abundant glycoprotein on mouse [[T cell]]s, with >10<sup>6</sup> copies/cell, covering ~10–20% of surface.
*one of the most heavily glycosylated membrane proteins (carbohydrate content ~30%)
|-
! '''Applications''':
|
*Very useful specific marker for:
**[[Hematopoietic stem cells]] ([[FAC sorting|FACS]] gated as [[Thymidylate synthase (FAD)|Thy1]]<sup>lo</sup>)
**Mesenchymal stem cells
**Distinction between cells from Thy1.1 and Thy 1.2 mouse strains.
*Its promoter has been used as a "brain specific" expression promoter for making transgenic mice.
*Thy1 is a pan T cell antigen in mice.
*Thy1 antibody injection is the best animal model of [[glomerulonephritis]]
|-
! '''Cellular importance''':
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*Arrests axon growth
*Co-stimulator of T cells
*Regulates survival/apoptosis
*tumor suppressor
*fibrosis modulator
|-
! '''Organismal importance''':
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*knock out of Thy1 shows:
**impaired cognitive learning from social cues
**impaired cutaneous immune responses
**abnormal retinal development
|-
| colspan="2" style="font-size: smaller;" | :::Thy1's real physiological functions are still not clearly understood
|}
'''Thy-1''' or '''CD90''' ('''C'''luster of '''D'''ifferentiation '''90''') is a 25–37 k[[Atomic mass unit|Da]] heavily N-glycosylated, [[glycophosphatidylinositol]] (GPI) anchored conserved cell surface [[protein]] with a single V-like [[immunoglobulin domain]], originally discovered as a [[thymocyte]] antigen. Thy-1 can be used as a marker for a variety of [[stem cell]]s and for the [[axon|axonal processes]] of mature [[neuron]]s. Structural study of Thy-1 lead to the foundation of the [[Immunoglobulin superfamily]], of which it is the smallest member, and led to some of the initial biochemical description and characterization of a vertebrate GPI anchor and also the first demonstration of tissue specific differential glycosylation.

== Discovery and nomenclature ==

The antigen Thy-1 was the first T cell marker to be identified. Thy-1 was discovered by Reif and Allen in 1964<ref>{{cite journal |vauthors=Reif AE, Allen JM | title = The AKR thymic antigen and its distribution in leukemias and nervous tissue | journal = J. Exp. Med. | volume = 120 | pages = 413–433 | year = 1964 | doi = 10.1084/jem.120.3.413 | pmid = 14207060 | pmc = 2137766 }}</ref> during a search for heterologous antisera against mouse [[leukemia]] cells, and was demonstrated by them to be present on murine thymocytes, on T lymphocytes, and on neuronal cells. It was originally named theta (θ) antigen, then Thy-1 ('''THYmocyte differentiation antigen 1''') due to its prior identification in thymocytes (precursors of [[T cell]]s in the [[thymus]]). The human homolog was isolated in 1980 as a 25kDa protein (p25) of T-lymphoblastoid cell line MOLT-3 binding with anti-monkey-thymocyte antisera.<ref name="pmid6153212">{{cite journal |vauthors=Ades EW, Zwerner RK, Acton RT, Balch CM | title = Isolation and partial characterization of the human homologue of Thy-1 | journal = J. Exp. Med. | volume = 151 | issue = 2 | pages = 400–6 | year = 1980 | pmid = 6153212 | doi = 10.1084/jem.151.2.400 | pmc = 2185777 }}</ref> The discovery of Thy-1 in mice and humans led to the subsequent discovery of many other T cell markers, which is very significant to the field of [[immunology]] since T cells (along with B cells) are the major cellular components of the adaptive immune response.<ref name="pmid6153212" />

== The conserved gene and its alleles ==
Thy-1 has been conserved throughout vertebrate evolution and even in some invertebrates, with [[homology (biology)|homologs]] described in many species like [[squid]], [[frog]]s, [[chicken]]s, [[mouse|mice]], [[rat]]s, [[dog]]s, and [[human]]s.

The Thy-1 gene is located at human [[chromosome 11]]q22.3 (mouse chromosome 9qA5.1). In [https://www.ncbi.nlm.nih.gov/IEB/Research/Acembly/av.cgi?db=human&term=thy1&submit=Go AceView], it covers 6.82 kb, from 119294854 to 119288036 (NCBI 37, August 2010), on the reverse strand. This locus is very close to [[CD3 (immunology)|CD3]] & CD56/[[Neural cell adhesion molecule|NCAM]] genes. Some believe that there may be a functional significance of both this gene and CD3 delta subunit (T3D) mapping to chromosome 11q in man and chromosome 9 in mouse, though there is no homology (in fact this speculation lead to its localization in chromosome 11q - the human chromosome region syntenic to mouse chromosome 9 which harbored T3D). In mice, there are two [[allele]]s: Thy1.1 (Thy 1a, CD90.1) and Thy1.2 (Thy 1b, CD90.2). They differ by only one [[amino acid]] at position 108; an arginine in Thy-1.1 and a glutamine in Thy-1.2. Thy 1.2 is expressed by most strains of mice, whereas Thy1.1 is expressed by some like AKR/J and PL [[Mouse#Taxonomy of the genus Mus|mouse strain]]s.

==The Protein==
The 25-kDa core protein (excluding the heavy glycosylation) of rodent Thy-1 is 111 or 112 amino acids in length, and is N-glycosylated at three sites (In contrast to only two glycosylation sites for human Thy-1). The 162aa (murine, 161 for human) Thy1 precursor has 19 amino acid (aa 1-19) [[signal peptide|signal sequence]] and 31 amino acid (aa 132-162) C-terminal transmembrane domain that is present in pro form but removed when transferring the 112 amino acid (aa 20-131) mature peptide to GPI anchor which would attach through the aa 131.

Some of the common monoclonal [[antibody|antibodies]] used to detect this protein are clones OX7, 5E10, K117 and L127.
There have been some reports of Thy1 monoclonal antibodies cross reacting with some cytoskeletal elements: anti Thy-1.2 with [[actin]] in marsupial, murine, and human cells and anti Thy-1.1 with [[vimentin]], and were suggested to be due to sequence homology by studies done more than 20 years back.<ref name="pmid6136544">{{cite journal |vauthors=Dales S, Fujinami RS, Oldstone MB | title = Serologic relatedness between Thy-1.2 and actin revealed by monoclonal antibody | journal = J. Immunol. | volume = 131 | issue = 3 | pages = 1332–8 |date=September 1983 | pmid = 6136544 | doi = }}</ref>

Thy-1, like many other GPI anchored proteins can be shed by special types of [[Phospholipase C]] e.g. PI-PLC (phosphatidyl-Inositol Phospholipase C, or PLC β). it can also be involved in cell to cell transfer of GPI anchored proteins like [[CD55]] and [[CD59]].

==Glycosylation==
Thy-1 is one of the most heavily glycosylated membrane proteins with a carbohydrate content up to 30% of its molecular mass.<ref name="pmid2888493">{{cite journal | author = Pont S | title = Thy-1: a lymphoid cell subset marker capable of delivering an activation signal to mouse T lymphocytes | journal = Biochimie | volume = 69 | issue = 4 | pages = 315–20 | year = 1987 | pmid = 2888493 | doi = 10.1016/0300-9084(87)90022-8 }}</ref> Thy1 in most species has 3 N-glycosylation sites (Asn 23, 74 and 98) but no O-glycosylation. The composition of Thy-1 carbohydrate moieties varies considerably between different tissues or even among cells of the same lineage at different stages of differentiation: e.g., galactosamine only in brain Thy-1, sialic acid in thymic Thy-1 in far excess than brain Thy-1, that too increasing in parallel with T cell maturation. In this regard it has yet another historic association: Thy1 happens to be the first glycoprotein in which cell type specificity of variant glycosylation on an invariant protein was demonstrated. Analysis of Differencial glycosylation of Thy-1 from brain and thymus showed that all the complex N-linked structures differed between the two forms, superimposed upon a site specific common core. In case of Thy1 this core pattern was constituted by Asn23 carrying mostly oligomannose structures, Asn74 carrying the most extended complex structures, and Asn98 carrying smaller complex structure. The structure of the sugar residues in the GPI anchor and their associated esterified structures (e.g. additional fatty acids and alcohols) also can be cell type and species specific.

==Expression==
Thy1 expression varies between species. Amongst the cells reported to generally express Thy-1 are [[thymocytes]] (precursor of T cells in the [[thymus]]) & [[CD34]](+) prothymocytes; [[neuron]]s, [[mesenchymal stem cells]], [[hematopoietic stem cells]], [[NK cell]]s, murine [[T-cell]]s, [[endothelium]] (mainly in [[high endothelial venule]]s or HEVs where diapedesis takes place), renal [[glomerulus|glomerular]] [[mesangial cell]]s, circulating metastatic [[melanoma]] cells, [[follicular dendritic cell]]s (FDC), a fraction of [[fibroblast]]s and [[myofibroblast]]s.

===Detailed expression of Thy-1===
* In mice, Thy-1 is also found on thymocytes, peripheral T cells, myoblasts, epidermal cells, and keratinocytes. It is one of the '''"pan T cell markers"'''(of mice) like [[CD2]], [[CD5 (protein)|CD5]] and [[CD28]].
* In humans, Thy-1 is also expressed by endothelial cells, smooth muscle cells, a subset of CD34+ bone marrow cells, and umbilical cord blood-, cardiac fibroblasts, and fetal liver-derived hemopoietic cells.
* Thy-1 is present on a fraction of brain cells and a fraction of [[fibroblast]]s of most vertebrate species studied.
* '''Nervous tissue''': Thy-1 expression in the nervous system is predominantly neuronal, but some glial cells also express Thy-1 especially at later stages of their differentiation. One study compared Thy-1 expression in four human neuronal cell lines, two neuroglial cell lines, and fresh tumor cells of neuronal origin and found three of the four neuronal cell lines, all of the neuroglial cell lines, and 80% of the tumors to be strongly positive for Thy-1.<ref name="pmid6121610">{{cite journal |vauthors=Kemshead JT, Ritter MA, Cotmore SF, Greaves MF | title = Human Thy-1: expression on the cell surface of neuronal and glial cells | journal = Brain Res. | volume = 236 | issue = 2 | pages = 451–61 | year = 1982 | pmid = 6121610 | doi = 10.1016/0006-8993(82)90727-2 }}</ref> Brain part specific ELISA reports are available which show highest concentrations of Thy1 protein in the [[striatum]] and [[hippocampus]], followed by the [[neocortex]], [[cerebellum]], [[spinal cord]], and the [[retina]] and [[optic nerve]]. Thy1 promoter has often been assumed to be "brain specific". "Neuron specific" mouse thy1 promoter has been used to drive "brain specific" forced expression of proteins e.g. mutated [[Amyloid precursor protein]](APP) as transgenic animal models of [[Alzheimer's disease]].<ref name="pmid10037741">{{cite journal |vauthors=Moechars D, Dewachter I, Lorent K, Reversé D, Baekelandt V, Naidu A, Tesseur I, Spittaels K, Haute CV, Checler F, Godaux E, Cordell B, Van Leuven F | title = Early phenotypic changes in transgenic mice that overexpress different mutants of amyloid precursor protein in brain | journal = J. Biol. Chem. | volume = 274 | issue = 10 | pages = 6483–92 | year = 1999 | pmid = 10037741 | doi = 10.1074/jbc.274.10.6483| url = http://www.jbc.org/cgi/content/abstract/274/10/6483 | format = abstract page }}</ref> Thy-1 expression in the brain is developmentally regulated. Thy-1 levels in the neonatal rat brain, as well as the developing human brain, are low compared to adult brain. During the first few weeks of postnatal development, Thy-1 levels increase exponentially as the brain matures.
*'''Lymphoid tissue''' Thy-1 expression is highly variable between species. In humans, Thy-1 expression is restricted to only a small population of cortical thymocytes<ref name="pmid7462633">{{cite journal |vauthors=McKenzie JL, Fabre JW | title = Human thy-1: unusual localization and possible functional significance in lymphoid tissues | journal = J. Immunol. | volume = 126 | issue = 3 | pages = 843–50 | year = 1981 | pmid = 7462633 | doi = | url = http://www.jimmunol.org/cgi/content/abstract/126/3/843 | format = abstract page }}</ref> and '''not''' expressed in mature human T cells.<ref name="pmid9749990">{{cite journal |vauthors=Saalbach A, Kraft R, Herrmann K, Haustein UF, Anderegg U | title = The monoclonal antibody AS02 recognizes a protein on human fibroblasts being highly homologous to Thy-1 | journal = Arch. Dermatol. Res. | volume = 290 | issue = 7 | pages = 360–6 | year = 1998 | pmid = 9749990 | doi = 10.1007/s004030050318 }}</ref> It is probably the most abundant glycoprotein of murine thymocytes, with about '''One million copies per cell covering up to 10–20% of the cell surface'''.<ref name="pmid9382830">{{cite journal | author = Killeen N | title = T-cell regulation: Thy-1 - hiding in full view | journal = Curr. Biol. | volume = 7 | issue = 12 | pages = R774–7 | year = 1997 | pmid = 9382830 | doi = 10.1016/S0960-9822(06)00402-7 }}</ref> Mouse cortical thymocytes express higher levels of Thy-1 than medullary thymocytes which in turn express more than lymph node cells (~200,000 copies/cell). A similar inverse developmental temporal expression profile is seen in rats T cells, although rat Thy-1 is lost at an earlier stage of T cell maturation.<ref name="pmid2868157">{{cite journal |vauthors=Crawford JM, Barton RW | title = Thy-1 glycoprotein: structure, distribution, and ontogeny | journal = Lab. Invest. | volume = 54 | issue = 2 | pages = 122–35 | year = 1986 | pmid = 2868157 | doi = }}</ref> Thy-1 is only expressed on thymocytes in rats (contrast to thymocytes and splenocytes in mice). The third intron of the mouse Thy-1 gene has a 36 base pair region that recruits nuclear transcription factors, such as Ets-1-like NF, expressed in thymocytes and splenocytes. The homologous region of the rat gene lacks the Ets-1-like NF binding site, but instead binds another NF expressed in rat thymocytes but not splenocytes.

===Induction of Thy-1 expression===
*Agents shown to induce Thy1 expression include: [[Thymopoietin]], [[thymosin]], [[prostaglandins]], [[nerve growth factor]], [[Interleukin 1|IL-1]], [[Tumor necrosis factors|TNF]], [[Phorbol 12-myristate 13-acetate|PMA]], Ca2+ ionophore, and [[diglyceride|diacylglycerol]] (DAG).<ref name="pmid15356100">{{cite journal |vauthors=Haeryfar SM, Hoskin DW | title = Thy-1: more than a mouse pan-T cell marker | journal = J. Immunol. | volume = 173 | issue = 6 | pages = 3581–8 | year = 2004 | pmid = 15356100 | doi = 10.4049/jimmunol.173.6.3581| url = http://www.jimmunol.org/cgi/content/abstract/173/6/3581 | format = abstract page }}</ref>

==Localization==
As a [[Glycophosphatidylinositol|GPI-anchored protein]], Thy-1 is present in the outer leaflet of [[lipid raft]]s in the cell membrane. In case of [[neuron]]s it is known to be expressed strongly in the mature axon. The [[axon hillock]] can act as a barrier for its lateral spread even though it has no transmembrane segment. Thy-1 has been suggested to interact with G inhibitory proteins, the Src family kinase (SFK) member c-fyn, and tubulin within lipid rafts. In rats and mice, Thy-1 protein is present on the soma (cell body) and dendrites of neurons but is not expressed on axons until axonal growth is complete, and is again temporarily suppressed during axonal injury. [[HIV-1]] Matrix co-localizes with Thy-1 in lipid rafts, the site of virus particle budding from cells, and Thy-1 is incorporated into virus particles as a result of this process.

==Function==
The function of Thy-1 has not yet been fully elucidated. It has speculated roles in cell-cell and cell-matrix interactions, with implication in neurite outgrowth, nerve regeneration, [[apoptosis]], [[metastasis]], [[inflammation]], and [[fibrosis]].

===Role in cognition===
The Thy-1 knockout (KO) mice are viable and appear grossly normal. They display normal social interactions and normal learning in a maze, but fail to learn from social cues (e.g. learning from other mice which foods are safe to eat as compared to wild-type mice). This failure can be rescued by the transgenic expression of Thy-1 or pharmacologic treatment with a GABA (A) receptor antagonists. This suggests that Thy-1 KO mice have excessive GABAergic inhibition in the dentate gyrus and regional inhibition of long-term potentiation.

===Axon growth regulation===
Crosslinking anti-Thy-1 Ab can promote neurite outgrowth which is dependent on G{alpha}i and L- and N-type calcium channel activation. The ligand for promotion of neurite outgrowth on astrocytes is not yet identified, but the inhibitory ligand has been suggested to be integrins. Thy1 is one of the known ligands of beta 3 [[integrin]]s. Interaction of thy1 expressed on maturing [[axon]]s with beta 3 integrins expressed on mature astrocytes may be the cause of halting of axon growth.

===T-cell activation===
Crosslinking Thy-1 molecules in the membrane raft, in the context of strong costimulatory signaling through CD28 in mouse T cells can act to some extent as a substitute activating signal for T-cell receptor signaling. Conversely it can substitute CD28 costimulation for activation through the TCR.<ref name="pmid15356100"/>

===Apoptosis/Necrosis===
Cross linking antibody induced aggregation of Thy1 cause death of thymocytes and mesangial cells mainly by [[apoptosis]] despite Bcl2 upregulation. The death of mesangial cells seems to be apoptosis by TUNEL staining or annexin V staining, but electron microscopy suggest it is [[necrosis]].

====Antibody target for animal model of Glomerulonephritis====
Single tail vein intravenous injection of antibody (OX7 mouse [[monoclonal]] IgG) against Thy1.1 in rats is used as a standard animal model to produce experimental mesangioproliferative [[glomerulonephritis]]<ref name="pmid2892961">{{cite journal |vauthors=Yamamoto T, Wilson CB | title = Quantitative and qualitative studies of antibody-induced mesangial cell damage in the rat | journal = Kidney Int. | volume = 32 | issue = 4 | pages = 514–25 | year = 1987 | pmid = 2892961 | doi = 10.1038/ki.1987.240 }}</ref> which is popularly known in the field of [[nephrology]] as ''antiThy1 GN''.

===Tumor suppression===
It has also been proven to be a [[tumor suppressor]] for some tumors.<ref name="pmid12781446">{{cite journal |vauthors=Abeysinghe HR, Cao Q, Xu J, Pollock S, Veyberman Y, Guckert NL, Keng P, Wang N | title = THY1 expression is associated with tumor suppression of human ovarian cancer | journal = Cancer Genet. Cytogenet. | volume = 143 | issue = 2 | pages = 125–32 | year = 2003 | pmid = 12781446 | doi = 10.1016/S0165-4608(02)00855-5 }}</ref> It probably is aided by its action in upregulating [[thrombospondin]], SPARC ([[osteonectin]]), and [[fibronectin]]. However it has also been speculated to aid in extravasation in circulating melanoma cells. In case of prostate cancer it has been shown to be expressed in cancer associated stroma but not in normal stroma and has been suggested to be of potential help for cancer specific drug targeting [http://www3.niddk.nih.gov/fund/other/cellularniche/poster%20abstracts/True%20Abstract%20ormatted.pdf].

===Role in cell adhesion, extravasation, migration===
Acting through several integrins and probably a few yet unknown other receptors Thy-1 mediates adhesion of leukocytes and monocytes to endothelial cells and fibroblasts, melanoma cells to endothelium, and thymocytes to thymic epithelium.<ref name="pmid16770003">{{cite journal |vauthors=Rege TA, Hagood JS | title = Thy-1 as a regulator of cell-cell and cell-matrix interactions in axon regeneration, apoptosis, adhesion, migration, cancer, and fibrosis | journal = FASEB J. | volume = 20 | issue = 8 | pages = 1045–54 | year = 2006 | pmid = 16770003 | doi = 10.1096/fj.05-5460rev }}</ref> Thy1 expression comes on when endothelial cells are activated. It has been shown to interact with the leukocyte integrin Mac1 (CD11b/CD18) and may play a role in leukocyte homing and recruitment.<ref name="pmid15004192">{{cite journal |vauthors=Wetzel A, Chavakis T, Preissner KT, Sticherling M, Haustein UF, Anderegg U, Saalbach A | title = Human Thy-1 (CD90) on activated endothelial cells is a counterreceptor for the leukocyte integrin Mac-1 (CD11b/CD18) | journal = J. Immunol. | volume = 172 | issue = 6 | pages = 3850–9 | year = 2004 | pmid = 15004192 | doi = 10.4049/jimmunol.172.6.3850| url = http://www.jimmunol.org/cgi/content/abstract/172/6/3850 | format = abstract page }}</ref>

===Modulating fibrosis===
Role of Thy-1 in fibrosis and fibroblast differention may have some tissue variation. In lung fibrosis Thy-1 level is suppressed in stimulated fibroblasts. Thy1 knock out mice have increased fibrosis in the lung. Fibrosis induced by radiation mimicking chemotherapeutic agent [[Bleomycin]] is also increased in these mice.

==Other roles==
Thy-1 knock out mice also show impaired cutaneous immune responses and abnormal retinal development: thinning of the inner nuclear, inner plexiform, ganglion cell, and outer segment layers of the retina.

==Use in stem cell biology==
Thy-1 can be considered as a surrogate marker for various kind of [[stem cell]]s (e.g. [[hematopoietic stem cells]] or HSCs). It is one of the popular combinatorial surface markers for [[Fluorescent-activated cell sorting|FACS]] for stem cells in combination with other markers like [[CD34]]. In humans, Thy-1 is expressed on neurons and HSCs among others. It is considered a major marker of HSC pluripotency in concordance with CD34. In human HSCs, Thy1 cells are all CD34 positive.<ref name="pmid20688981">{{cite journal |vauthors=Boitano AE, Wang J, Romeo R, Bouchez LC, Parker AE, Sutton SE, Walker JR, Flaveny CA, Perdew GH, Denison MS, Schultz PG, Cooke MP | title = Aryl Hydrocarbon Receptor Antagonists Promote the Expansion of Human Hematopoietic Stem Cells | journal = Science | volume = 329 | issue = 5997 | pages = 1345–8 |date=September 2010 | pmid = 20688981 | doi = 10.1126/science.1191536 | pmc = 3033342 }}</ref><ref name="pmid7683034">{{cite journal |vauthors=Craig W, Kay R, Cutler RL, Lansdorp PM | title = Expression of Thy-1 on human hematopoietic progenitor cells | journal = J. Exp. Med. | volume = 177 | issue = 5 | pages = 1331–42 |date=May 1993 | pmid = 7683034 | pmc = 2191025 | doi = 10.1084/jem.177.5.1331| url = }}</ref><ref name="pmid18371405">{{cite journal |vauthors=Majeti R, Park CY, Weissman IL | title = Identification of a Hierarchy of Multipotent Hematopoietic Progenitors in Human Cord Blood | journal = Cell Stem Cell | volume = 1 | issue = 6 | pages = 635–45 |date=December 2007 | pmid = 18371405 | pmc = 2292126 | doi = 10.1016/j.stem.2007.10.001 }}</ref><ref name="pmid14978070">{{cite journal |vauthors=Mestas J, Hughes CC | title = Of mice and not men: differences between mouse and human immunology | journal = J. Immunol. | volume = 172 | issue = 5 | pages = 2731–8 |date=March 2004 | pmid = 14978070 | doi = 10.4049/jimmunol.172.5.2731}}</ref> Thy 1 is also a marker of other kind of stem cells, for example: mesenchymal stem cells, [[hepatic stem cells]] ("oval cells"),<ref name="pmid16769813">{{cite journal |vauthors=Masson NM, Currie IS, Terrace JD, Garden OJ, Parks RW, Ross JA | title = Hepatic progenitor cells in human fetal liver express the oval cell marker Thy-1 | journal = Am. J. Physiol. Gastrointest. Liver Physiol. | volume = 291 | issue = 1 | pages = G45–54 | year = 2006 | pmid = 16769813 | doi = 10.1152/ajpgi.00465.2005 }}</ref> keratinocyte stem cells,<ref name="pmid16704635">{{cite journal |vauthors=Nakamura Y, Muguruma Y, Yahata T, Miyatake H, Sakai D, Mochida J, Hotta T, Ando K | title = Expression of CD90 on keratinocyte stem/progenitor cells | journal = Br. J. Dermatol. | volume = 154 | issue = 6 | pages = 1062–70 | year = 2006 | pmid = 16704635 | doi = 10.1111/j.1365-2133.2006.07209.x }}</ref> putative endometrial progenitor/(?)stem cells.<ref name="pmid16704483">{{cite journal | author = Gargett CE | title = Identification and characterisation of human endometrial stem/progenitor cells | journal = Aust N Z J Obstet Gynaecol | volume = 46 | issue = 3 | pages = 250–3 | year = 2006 | pmid = 16704483 | doi = 10.1111/j.1479-828X.2006.00582.x }}</ref>

==References==
{{Reflist|2}}

{{Clusters of differentiation}}


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==External links==
* {{UCSC gene info|THY1}}

[[Category:Molecular biology]]
[[Category:Clusters of differentiation]]

wikidoc - User contributions [en]

CD90