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Merck

L3408

Sigma-Aldrich

Transforming Growth Factor-β1 Latency Associated Peptide human

≥97% (SDS-PAGE), recombinant, expressed in Sf21 cells, lyophilized powder, suitable for cell culture

Sinónimos:

LAP, TGF-β1

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About This Item

Número MDL:
Código UNSPSC:
51111800
NACRES:
NA.41

origen biológico

human

Nivel de calidad

recombinante

expressed in Sf21 cells

Ensayo

≥97% (SDS-PAGE)

Formulario

lyophilized powder

mol peso

protein 70 kDa

técnicas

cell culture | mammalian: suitable

impurezas

endotoxin, tested

idoneidad

suitable for molecular biology

Nº de acceso UniProt

temp. de almacenamiento

−20°C

Información sobre el gen

human ... TGFB1(7040)

Categorías relacionadas

Descripción general

Research Area: Cell Signaling

TGF-β is released from degranulating platelets and secreted from nearly all cells in a biologically inactive complex which is unable to bind to cellular receptors and is not recognized by antibodies to TGF-β. The peptide can be activated by acidification, alkalinization, or action of chaotropic agents in vitro. The complex consists of TGF-β associated non-covalently with a protein designated as the latency associated peptide (LAP). TGF-β and LAP represent components of a pro-peptide that is cleaved in a post-golgi compartment prior to secretion. The recombinant human LAP is produced from a DNA sequence corresponding to the 278 amino acid residues of pre-pro-TGF-β1 terminating prior to the mature TGF-β1. LAP contains a Cys33 to Ser33 substitution. LAP contains 249 amino acids, generated after cleavage of a 29 amino acid residue signal peptide. LAP is a glycoslyated, disulfide linked homodimer.

Aplicación

Latency Associated Peptide (LAP) may be used to inhibit transforming growth factor-β 1 activity in various biological systems.
Transforming Growth Factor-β1 Latency Associated Peptide human has been used to coat the cell culture inserts for cell migration assays to determine the functional effects of impeding αvβ6 endocytosis in vitro. It has also been used to coat non-tissue culture-treated 96-well plates for adhesion assays.

Acciones bioquímicas o fisiológicas

Latency Associated Peptide (LAP) binds transforming growth factor-beta 1 (TGF-β1) to form a latent complex. The activity of TGF-β1 is primarily regulated through the activation of the latent molecule. LAP has the ability to stimulate epithelial cell migration, representing a new function for LAP in controlling monocyte trafficking and immune modulation. Following post-translational modification, TGF-β1 binds non-covalently to the LAP to establish latency. Due to its crucial function in modulating TGF-β1 activity, LAP plays a fundamental role in governing a range of TGF-β1 effects. LAP is expressed on immature dendritic cells and contributes to T cell differentiation. LAP exhibits both chemotactic and anti-inflammatory activity independently of active TGF-β1.
TGF-β1 is produced by many cell types, but is reported to be most concentrated in mammalian platelets, where it is present at approximately four times the level of TGF-β2.
TGF-β1 is produced by many cell types, but is reported to be most concentrated in mammalian platelets.

Forma física

Lyophilized from 0.2 μm filtered phosphate buffered saline containing 1.25 mg bovine serum albumin.

Nota de análisis

The biological activity is measured by its ability to inhibit TGF-β1 activity on mouse HT-2 cells.

Cláusula de descargo de responsabilidad

Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

Código de clase de almacenamiento

11 - Combustible Solids

Clase de riesgo para el agua (WGK)

WGK 3

Punto de inflamabilidad (°F)

Not applicable

Punto de inflamabilidad (°C)

Not applicable

Equipo de protección personal

Eyeshields, Gloves, type N95 (US)


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Latency associated peptide has in vitro and in vivo immune effects independent of TGF-beta1
Ali NA, et al,
PLoS ONE, 3(4), e1914-e1914 (2008)
Loss of MMP-8 in ductal carcinoma in situ (DCIS)-associated myoepithelial cells contributes to tumour promotion through altered adhesive and proteolytic function
Sarper M, et al.
Breast Cancer Research, 1-19 (2017)
Muge Sarper et al.
Breast cancer research : BCR, 19(1), 33-33 (2017-03-24)
Normal myoepithelial cells (MECs) play an important tumour-suppressor role in the breast but display an altered phenotype in ductal carcinoma in situ (DCIS), gaining tumour-promoter functions. Matrix metalloproteinase-8 (MMP-8) is expressed by normal MECs but is lost in DCIS. This

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