F3777

Anticorps monoclonal anti-α-actine de muscle lisse

clone 1A4, purified from hybridoma cell culture

• Synonyme(s) : SMA
• Code UNSPSC : 12352203
• Nomenclature NACRES : NA.41

Propriétés

• Source biologique: mouse
• Conjugué: FITC conjugate
• Forme d'anticorps: purified from hybridoma cell culture
• Type de produit anticorps: primary antibodies
• Clone: 1A4, monoclonal
• Forme: buffered aqueous solution
• Poids mol.: antigen ~42 kDa
• Espèces réactives: human, mouse, rat, chicken, frog, canine, rabbit, guinea pig, goat, bovine, sheep, snake
• Technique(s): immunohistochemistry (formalin-fixed, paraffin-embedded sections): 1:500 using human tonsil or appendix
• Isotype: IgG2a
• Numéro d'accès UniProt: P62736
• Conditions d'expédition: dry ice
• Température de stockage: −20°C
• Modification post-traductionnelle de la cible: unmodified
• Informations sur le gène: human ... ACTA2(59) ; mouse ... Acta2(11475) ; rat ... Acta2(81633)

Description

Description générale

Cet anticorps (également appelé anticorps anti-α-Sm-1) est spécifique de l'unique isoforme de l'α-actine du muscle lisse. Il réagit spécifiquement avec l'α-actine du muscle lisse lors de tests d'immunoblotting et marque les cellules de muscle lisse sur des coupes histologiques congelées ou fixées au formol et incluses en paraffine.

α-smooth muscle actin, a smooth muscle cell-specific protein, is also known as aortic smooth muscle or a smooth muscle actin (α-SMA, SMactin, α-SM-actin, ASMA). It belongs to the actin family.It is predominantly found in cells of the smooth muscle lineages. It has been reported that α-smooth muscle actin was also found in certain non-muscle cells, in particular fibroblasts i.e. myofibroblasts. Actin, a conserved eukaryotic protein, is the major cytoskeletal component and is expressed as six different isoforms in mammals and birds. It is mapped to human chromosome 10q23.31.

The antibody reacts with normal and neoplastic, human vascular and visceral smooth muscle cells. It reacts with normal myoepithelial cells, pericytes, eye lens cells, hair follicle cells and certain stromal cells in the intestine, testis, lymphoid organs, liver, ovary and bone marrow. The antibody also reacts with stromal myofibroblasts in hypertrophic scars, and in neoplastic tissues. α-smooth muscle actin is transiently co-expressed with sarcomeric α-actin during myogenesis in chicken and rat embryos. It was also found in the ventricular conducting tract of adult mammalian heart.

Spécificité

Monoclonal Anti-Actin, α-Smooth Muscle specifically recognizes the α-smooth muscle isoform of actin (42 kDa) by ELISA and immunoblotting. It does not react with the other major actin isoforms present in fibroblasts or epithelial cells (β and γ-cytoplasmic), striated muscle (α-sarcomeric), myocardium (α-myocardial), or γ-smooth muscle isoform.

Immunogène

Décapeptide de synthèse N-terminal de l'α-actine du muscle lisse.

Application

Des coupes incluses en paraffine de greffons de tissus testiculaires de rat ont été colorées par immunohistochimie (IHC) à l'aide de l'anticorps monoclonal de souris anti-actine de muscle lisse.
Des tissus cardiaques de souris colorés au x-gal ont été analysés par IHC à l'aide de l'anticorps primaire monoclonal de souris anti-actine de muscle lisse afin d'identifier les myofibroblastes.

Une immunocytochimie a été réalisée sur des cellules de muscle lisse d'aortes de bovin à l'aide de l'anticorps monoclonal anti-ACTA2. Les cellules ont d'abord été cultivées sur des lamelles de verre, puis fixées dans 50 % d'acétone/EtOH pendant 10 minutes à 4 °C.

Monoclonal Anti-Actin, α-Smooth Muscle - FITC antibody is suitable for:

• immunohistochemical (IHC) staining of heart, lung, kidney, and liver of mice to examine the PHD2 deficiency in internal organs
• immunostaining to analyze vascular smooth muscle cells/pericytes development in platelet-derived growth factor (PDGFR) and PDGFR- β^-/- embryos
• immunofluorescent analysis of implanted cells, frozen tissue samples to study the similar levels of expression of SMaA and SM-MHC as established primary SMC lines
• western blots of lens epithelial cells to determine the distribution of α-SMA expression in lens epithelial cell
• Immunohistochemical examination of lesion morphology
• flow cytometry
• immunohistochemistry, proliferation and TUNEL (terminal deoxynucleotidyl transferase (TdT) dUTP nick-end labeling) assays
• immunocytochemistry

Actions biochimiques/physiologiques

Actin plays an important role in cell motility, structure and integrity. Smooth muscle actin-α (SMA)/ α2-smooth muscle actin (ACTA2) interacts with β-myosin heavy chain and helps in vascular smooth muscle cell contraction. The encoded protein modulates the expression of c-MET (tyrosine-protein kinase Met) and focal adhesion kinase (FAK) in human lung adenocarcinoma cells, which positively and selectively mediates tumor progression. Mutation in the gene expression leads to thoracic aortic aneurysms and dissections (TAAD).

Forme physique

Solution in 0.01 M phosphate buffered saline, pH 7.4, containing 1% bovine serum albumin and 15 mM sodium azide, as a preservative.

Stockage et stabilité

For continuous use, store at 2-8 °C for up to one month. For extended storage, freeze in working aliquots. Repeated freezing and thawing, or storage in "frostfree" freezers, is not recommended. If slight turbidity occurs upon prolonged storage, clarify the solution by centrifugation before use. Protect from prolonged exposure to light.

Autres remarques

To view an Actin antibody selection guide, please visit www.sigmaaldrich.com/actin.

Clause de non-responsabilité

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.

Informations sur la sécurité

• Code de la classe de stockage: 12 - Non Combustible Liquids
• Classe de danger pour l'eau (WGK): nwg
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable
• Équipement de protection individuelle: Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)