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Key Documents

SRP6434

Sigma-Aldrich

PD-L1/CD274/B7-H1 human

recombinant, expressed in HEK 293 cells, ≥95% (SDS-PAGE)

Synonym(s):

PDCD1L1, PDCD1LG1

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About This Item

UNSPSC Code:
12352200
NACRES:
NA.32

biological source

human

recombinant

expressed in HEK 293 cells

tag

6-His tagged (C-terminus)

Assay

≥95% (SDS-PAGE)

form

lyophilized

mol wt

calculated mol wt 26 kDa
observed mol wt 35-42 kDa (DTT-reduced. Protein migrates due to glycosylation. Phe 19 is the predicted N-terminal.)

packaging

pkg of 10 and 50 μg

UniProt accession no.

Q9NZQ7

shipped in

wet ice

storage temp.

−20°C

Gene Information

human ... CD274(29126)

General description

Programmed cell death 1 ligand 1 (PD-L1), which is also known as cluster of differentiation (CD274) or B7 homolog 1 (B7-H1), is a member of the growing B7 family of immune molecules. PD-L1 is a cell surface immunoglobulin with two Ig-like domains within the extracellular region and a short cytoplasmic domain. The protein is highly expressed in the heart, skeletal muscle, placenta and lung and weakly expressed in the thymus, spleen, kidney and liver. PD-L1 is expressed on activated T-cells, B-cells, dendritic cells, keratinocytes and monocytes. The gene encoding it is localized on chromosome 9p24.1.

Biochem/physiol Actions

Programmed cell death 1 ligand 1 (PD-L1) is involved in the regulation of cellular and humoral immune responses. PD-L1 is up-regulated on T- and B-cells, dendritic cells, keratinocytes and monocytes after lipopolysaccharide (LPS) and interferon-γ (IFNG) activation and up-regulated in B-cells activated by surface Ig cross-linking. PD-L1 is involved in the co-stimulatory signal, essential for T-cell proliferation and production of interleukin-10 (IL10) and IFNG, in an interleukin-2-dependent and a programmed cell death 1 (PDCD1)-independent manner.

Physical form

Lyophilized from 0.22 μm filtered solution in PBS, pH7.4. Normally Mannitol or Trehalose is added as protectants before lyophilization.

Reconstitution

Centrifuge the vial prior to opening. Reconstitute in sterile PBS, pH 7.4 to a concentration of 50 μg/mL. Do not vortex. This solution can be stored at 2-8°C for up to 1 month. For extended storage, it is recommended to store at -20°C.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Integrative analysis reveals selective 9p24.1 amplification, increased PD-1 ligand expression, and further induction via JAK2 in nodular sclerosing Hodgkin lymphoma and primary mediastinal large B-cell lymphoma.
Green MR
Blood, 116(17), 3268-3277 (2010)
Intrinsic and extrinsic control of expression of the immunoregulatory molecule PD-L1 in epithelial cells and squamous cell carcinoma.
Ritprajak P and Azuma M
Oral Oncology, 51(3), 221-228 (2015)
The role of B7 family molecules in hematologic malignancy.
Greaves P and Gribben JG
Blood, 121(5), 734-744 (2013)
Adnan R Khan et al.
Nature communications, 6, 5997-5997 (2015-01-23)
Specific B-cell subsets can regulate T-cell immune responses, and are termed regulatory B cells (Breg). The majority of Breg cells described in mouse and man have been identified by IL-10 production and are known to suppress allergy and autoimmunity. However

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