Gamma-enolase is one of the three enolase isoenzymes found in mammals. This isoenzyme, a homodimer, is found in mature neurons and cells of neuronal origin. A switch from alpha enolase to gamma enolase occurs in neural tissue during development in rats and primates. Detection of NSE with antibodies can be used to identify neuronal cells and cells with neuroendocrine differentiation. NSE is produced by small cell carcinomas which are neuroendocrine in origin. NSE is therefore a useful tumor marker for lung cancer patients.
Background References
1. Fujiwara H, Arima N, Ohtsubo H et al. (2002). "Clinical significance of serum neuron-specific enolase in patients with adult T-cell leukemia". Am. J. Hematol. 71 (2): 80–4.
2. Nakatsuka S, Nishiu M, Tomita Y et al. (2005). "Enhanced expression of neuron-specific enolase (NSE) in pyothorax-associated lymphoma (PAL)". Jpn. J. Cancer Res. 93 (4): 411–6.
3. Chekhonin VP, Zhirkov YA, Belyaeva IA et al. (2002). "Serum time course of two brain-specific proteins, alpha(1) brain globulin and neuron-specific enolase, in tick-born encephalitis and Lyme disease". Clin. Chim. Acta 320 (1–2): 117–25.
Sequence Similarity
Belongs to the enolase family.
Tissue Specificity
The alpha/alpha homodimer is expressed in embryo and in most adult tissues. The alpha/beta heterodimer and the beta/beta homodimer are found in striated muscle, and the alpha/gamma heterodimer and the gamma/gamma homodimer in neurons.
Western blot analysis of NSE on different lysates with Rabbit anti-NSE antibody (R1401-6) at 1/5,000 dilution.
Lane 1: HAP1-parental cell lysate Lane 2: HAP1-NSE KD cell lysate
Lysates/proteins at 10 µg/Lane.
Predicted band size: 47 kDa Observed band size: 47 kDa
Exposure time: 8 seconds; ECL: K1801;
4-20% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (R1401-6) at 1/5,000 dilution was used in K1803 at 4℃ overnight. Goat Anti-Rabbit IgG - HRP Secondary Antibody (HA1001) at 1/50,000 dilution was used for 1 hour at room temperature.
ICC staining NSE in Hela cells (green). Cells were fixed in paraformaldehyde, permeabilised with 0.25% Triton X100/PBS.
Western blot analysis of NSE on different lysates with Rabbit anti-NSE antibody (R1401-6) at 1/5,000 dilution.
Lane 1: HepG2 cell lysate Lane 2: HeLa cell lysate Lane 3: PC-12 cell lysate Lane 4: Mouse brain tissue lysate Lane 5: Rat brain tissue lysate
Lysates/proteins at 20 µg/Lane.
Exposure time: 10 seconds; ECL: K1801
Blocking: 5% NFDM/TBST, 1 hour at room temperature Primary antibody: R1401-6, 1/5,000 in 5% NFDM/TBST, overnight at 4 ℃ Secondary antibody: Goat anti-Rabbit IgG-HRP (HA1001), 1/50,000 in 5% NFDM/TBST, 1 hour at room temperature
Predicted band size: 47 kDa Observed band size: 47 kDa
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