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T1568

Sigma-Aldrich

Thrombopoietin human

recombinant, expressed in E. coli, lyophilized powder, suitable for cell culture, ≥98% (SDS-PAGE and HPLC)

Synonym(s):

MGDF, Megakaryocyte colony-stimulating factor, TPO, c-MPL ligand

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About This Item

CAS Number:
9014-42-0
MDL number:
MFCD01095335
UNSPSC Code:
12352202
NACRES:
NA.32

biological source

human

Quality Level

100

recombinant

expressed in E. coli

assay

≥98% (SDS-PAGE and HPLC)

form

lyophilized powder

potency

≤1.0 ng/mL ED50

mol wt

18.6 kDa

packaging

pkg of 5 μg

storage condition

avoid repeated freeze/thaw cycles

technique(s)

cell culture | mammalian: suitable

impurities

endotoxin, tested

UniProt accession no.

P40225

storage temp.

−20°C

Gene Information

human ... THPO(7066)

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Application

TPO stimulates the proliferation and maturation of megakaryocytes and promotes increased circulating levels of platelets in vivo. TPO signals through the c-mpl receptor and acts as an important regulator of circulating platelets

Biochem/physiol Actions

Thrombopoeitin is a primary regulatory factor for megakaryocytopoiesis and thrombopoiesis. The mature form of TPO is a highly conserved glycoprotein, showing homology among various mammals. It is produced by liver and kidney cells. TPO stimulates growth and maturation of megakaryocytes and megakaryocytic colonies from bone marrow cultures. TPO binds and activates an 68-78 kDa glycoprotein receptor belonging to the GH family of cytokine receptors, a family that includes receptors to growth hormone (GH), erythropoietin (EPO), and prolactin (PRL). Like GH and EPO, TPO may bind to its receptor at two distinct sites, initiating receptor dimerization and activation. Analysis of mRNA indicates also the existence of a novel truncated and potentially soluble form of TPO receptor. The viral oncogene v-mlp of the myeloproliferative leukemia virus (MPLV) contains the gene sequence for the entire cytoplasmic and transmembrane domains and a portion of the extracellular domain of c-mlp (TPO receptor).

Physical form

Lyophilized from a 0.1 % TFA solution containing 250 μg bovine serum albumin

Analysis Note

The biological activity is measured in a cell proliferation assay using MO7e cells.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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