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377M-1

Sigma-Aldrich

Smoothelin (R4A) Mouse Monoclonal Antibody

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About This Item

UNSPSC Code:
12352203
NACRES:
NA.41

biological source

mouse

Quality Level

100
500

conjugate

unconjugated

antibody form

diluted ascites fluid

antibody product type

primary antibodies

clone

R4A, monoclonal

description

For In Vitro Diagnostic Use in Select Regions (See Chart)

form

buffered aqueous solution

species reactivity

human

packaging

vial of 0.1 mL concentrate (377M-14)
vial of 0.5 mL concentrate (377M-15)
bottle of 1.0 mL predilute (377M-17)
vial of 1.0 mL concentrate (377M-16)
bottle of 7.0 mL predilute (377M-18)

manufacturer/tradename

Cell Marque™

technique(s)

immunohistochemistry (formalin-fixed, paraffin-embedded sections): 1:100-1:500

isotype

IgG1

control

bladder, leiomyoma

shipped in

wet ice

storage temp.

2-8°C

visualization

cytoplasmic, nuclear

Gene Information

human ... SMTN(6525)

Related Categories

General description

Smoothelin is a constituent of the smooth muscle cell cytoskeleton protein exclusively found in differentiated smooth muscle cells (SMC). Cells with SMC-like characteristics, such as myofibroblasts and myoepithelial cells, as well as skeletal and cardiac muscle do not contain smoothelin. To distinguish bladder muscularis mucosae (MM) from muscularis propria (MP) muscle bundles is crucial for accurate staging of bladder carcinoma. Strong smoothelin expression is nearly exclusively observed in muscularis propria. Therefore, the staining pattern of MP (strongly positive) and MM (negative or weakly positive) makes this technique an attractive diagnostic tool for the sometimes difficult task of staging bladder urothelial carcinoma, such as in transurethral resection specimens of urinary bladder tumors. Differentiating between smooth muscle tumors and other mesenchymal neoplasms of the GI tract can be challenging in small biopsies. Anti-smoothelin immunostaining can be helpful in differentiating benign (+) from malignant smooth muscle tumors (-), and other mimics(-).

Quality


IVD
IVD
IVD
RUO

Linkage

Smoothelin Positive Control Slides, Product No. 377S, are available for immunohistochemistry (formalin-fixed, paraffin-embedded sections).

Physical form

Solution in Tris Buffer, pH 7.3-7.7, with 1% BSA and <0.1% Sodium Azide

Preparation Note

Download the IFU specific to your product lot and formatNote: This requires a keycode which can be found on your packaging or product label.

Other Notes

For Technical Service please contact: 800-665-7284 or email: service@cellmarque.com

Legal Information

Cell Marque is a trademark of Merck KGaA, Darmstadt, Germany

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R E Jimenez et al.
Advances in anatomic pathology, 7(1), 13-25 (2000-01-20)
One of the challenging areas in genitourinary pathology is the recognition of early invasion in urothelial neoplasia. Not uncommon, the patterns of invasion into lamina propria are subtle because a desmoplastic response is absent. Tangential sectioning due to inability to
C Maake et al.
The Journal of urology, 175(3 Pt 1), 1152-1157 (2006-02-14)
We established the expression pattern of smoothelin, a marker protein for contractile smooth muscle cells, in the human detrusor and investigated its possible impact on bladder overactivity. Detrusor samples of 13 overactive bladders (sensory urge and detrusor instability) were obtained
Gladell P Paner et al.
The American journal of surgical pathology, 34(6), 792-799 (2010-04-28)
Accurate recognition of muscularis propria invasion by urothelial carcinoma is vital as it serves as a crossroad between conservative and aggressive clinical management. Recently, there has been attention to the hyperplastic pattern of muscularis mucosae which may mimic the muscularis
Gladell P Paner et al.
The American journal of surgical pathology, 33(1), 91-98 (2008-10-22)
Accurate recognition of urinary bladder muscularis propria (MP) invasion by urothelial carcinoma is crucial as it is the critical crossroad between conservative and aggressive management for the patient. It is now widely known that an inconsistent layer of muscularis mucosae
Dominique P Coco et al.
The American journal of surgical pathology, 33(12), 1795-1801 (2009-12-02)
Smoothelin is a smooth muscle-specific cytoskeletal protein exclusively found in differentiated smooth muscle cells. This contrasts with other smooth muscle proteins (eg, h-caldesmon, alpha-smooth muscle actin, desmin, smooth muscle myosin), which are expressed in proliferative (early) stages of smooth muscle
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