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A2951

Sigma-Aldrich

Monoclonal Anti-Alkaline Phosphatase, Human Placental antibody produced in mouse

clone 8B6, ascites fluid

Synonym(s):

Monoclonal Anti-Alkaline Phosphatase, Human Placental, Anti-Phosphatase, Alkaline, Human Placental, PLAP

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About This Item

MDL number:
MFCD00162106
UNSPSC Code:
12352203
NACRES:
NA.46

biological source

mouse

Quality Level

200

conjugate

unconjugated

antibody form

ascites fluid

antibody product type

primary antibodies

clone

8B6, monoclonal

contains

15 mM sodium azide

species reactivity

human

technique(s)

immunocytochemistry: suitable
immunohistochemistry (formalin-fixed, paraffin-embedded sections): 1:4,000 using human placenta
immunohistochemistry (frozen sections): suitable
indirect ELISA: suitable using whole cells
radioimmunoassay: suitable using radio-immunolocalization of xenografts of human cell lines expressing PLAP in nude mice2
western blot: suitable

isotype

IgG2a

UniProt accession no.

P05187

shipped in

dry ice

storage temp.

−20°C

target post-translational modification

unmodified

Gene Information

human ... ALPP(250)

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General description

In SDS gels, the product reacts with both Regan and Nagao isozymes of human placental alkaline phosphatase (hPLAP, 130 kDa, 67/130 kDa). By RIA, the antibody binds to hPLAP with an affinity constant of 5 × 109 LM-1. It does not react with PLAP-like enzymes.
Monoclonal Anti-Human Placental Alkaline Phosphatase (mouse IgG2a isotype) is derived from the 8B6 hybridoma produced by the fusion of mouse myeloma cells and splenocytes from immunized BALB/c mice. Placental alkaline phosphatase (PLAP) or ALPP is a phosphomonoesterase. It is expressed in the placenta and endometrium. The PLAP gene is localized on human chromosome 2q37.1. Small amounts of hPLAP are found in the endocervix, fallopian tubes and lung. Very small amounts of heat-stable AP resembling hPLAP (hPLAPlike AP) are expressed in the testis, thymus and in rare colon epithelial cells.

Immunogen

Human epidermoid carcinoma cell line expressing placental alkaline phosphatase.

Application

Anti-Alkaline phosphatase human placental antibody coupled to agarose was packed in a column and used to purify alkaline-phosphatase conjugated FGF receptor out of conditioned media from COS-7 cells. Column was washed with 1M NaCl.
Cultured pancreatic islet cells were fixed with cold 4% paraformaldhyde at room temperature for 10 minutes and incubated with mouse monoclonal anti-Alkaline Phosphatase, Human Placental antibody at 1:500. Mouse monoclonal anti-Alkaline Phosphatase, Human Placental antibody was used to detect a unique molecular probe that consisted of the FGFR extracellular domain expressed as a chimera with human PLAP.
Monoclonal Anti-Alkaline Phosphatase, Human Placental antibody produced in mouse has been used in:
  • enzyme-linked immunosorbent assay (ELISA)
  • immunocytochemistry
  • radio-immunolocalization
  • western blot
  • immunofluorescence
  • immunohistochemistry

Biochem/physiol Actions

Placental alkaline phosphatase (PLAP) or ALPP is a hydrolase, which is involved in the hydrolysis of phosphomonoesters. It has been shown to be a biomarker for ovarian cancer. The protein is expressed in carcinomas such as ovarian adenocarcinoma, dysgerminoma, serous cystadenocarcinoma and undifferentiated carcinoma. Although hPLAP has been analyzed as a potential tumor marker, it has not been widely used in the routine clinical laboratory because of its low overall specificity due to heat-inactivation, cross-reactivity with intestinal AP and L-phenylalanine sensitivity. The use of monoclonal antibodies as reagents has greatly improved the sensitivity, reproducibility and accuracy of the tests used to distinguish placental isozymes from their tumor cell counterparts. Thus, monoclonal anti-alkaline phosphatase may be useful as diagnostic tools for tumor detection.

Disclaimer

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.

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Storage Class

10 - Combustible liquids

wgk_germany

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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Isolation and purification of human placental plasma membranes from normal and pre-eclamptic pregnancies. A comparative study
Jimenez V, et al.
Placenta, 25(5), 422-437 (2004)
Cloverleaf skull anomaly and de novo trisomy 4p
de Brasi D, et al.
Journal of medical Genetics, 36(5), 422-424 (1999)
A human monoclonal antibody specific to placental alkaline phosphatase, a marker of ovarian cancer
Ravenni N, et al.
MAbs, 6(1), 86-94 (2019)
Refined structures of placental alkaline phosphatase show a consistent pattern of interactions at the peripheral site
Stec B, et al.
Acta Crystallographica Section F, Structural Biology and Crystallization Communications, 66(Pt), 8-8 (2010)
Isolation of basal membrane proteins from BeWo cells and their expression in placentas from fetal growth-restricted pregnancies
Oh SY, et al.
Placenta, 39, 24-32 (2016)
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