Description
Cyclin E1 Colorimetric Cell-Based ELISA Kit
The Cyclin E1 Colorimetric Cell-Based ELISA Kit is a reliable and accurate tool for the quantitative detection of Cyclin E1 levels in cell lysates and culture supernatants. This kit offers high sensitivity and specificity, providing researchers with consistent and reproducible results for their experiments.Cyclin E1 is a key regulator of cell cycle progression, playing a crucial role in the transition from G1 to S phase. Dysregulation of Cyclin E1 has been linked to various diseases, including cancer, making it an important target for studying disease mechanisms and potential therapeutic interventions.
With the Cyclin E1 Colorimetric Cell-Based ELISA Kit, researchers can easily measure Cyclin E1 levels in their samples, allowing for a better understanding of cell cycle dynamics and potential therapeutic targets. This kit is ideal for a wide range of research applications in cell biology, cancer biology, and drug discovery.
| Product Name: | Cyclin E1 Colorimetric Cell-Based ELISA Kit |
| Product Code: | CBCAB00292 |
| ELISA Type: | Cell-Based |
| Target: | Cyclin E1 |
| Reactivity: | Human, Mouse, Rat |
| Dynamic Range: | > 5000 Cells |
| Detection Method: | Colorimetric 450 nmStorage/Stability:4°C/6 Months |
| Format: | 96-Well Microplate |
The Cyclin E1 Colorimetric Cell-Based ELISA Kit is a convenient, lysate-free, high throughput and sensitive assay kit that can detect Cyclin E1 protein expression profile in cells. The kit can be used for measuring the relative amounts of Cyclin E1 in cultured cells as well as screening for the effects that various treatments, inhibitors (ie siRNA or chemicals), or activators have on Cyclin E1.
Qualitative determination of Cyclin E1 concentration is achieved by an indirect ELISA format. In essence, Cyclin E1 is captured by Cyclin E1-specific primary antibodies while the HRP-conjugated secondary antibodies bind the Fc region of the primary antibody. Through this binding, the HRP enzyme conjugated to the secondary antibody can catalyze a colorimetric reaction upon substrate addition. Due to the qualitative nature of the Cell-Based ELISA, multiple normalization methods are needed:
| 1. | A monoclonal antibody specific for human GAPDH is included to serve as an internal positive control in normalizing the target absorbance values. |
| 2. | Following the colorimetric measurement of HRP activity via substrate addition, the Crystal Violet whole-cell staining method may be used to determine cell density. After staining, the results can be analysed by normalizing the absorbance values to cell amounts, by which the plating difference can be adjusted. |
| Database Information: | Gene ID: 898, UniProt ID: P24864, OMIM: 123837, Unigene: Hs.175322 |
| Gene Symbol: | CCNE1 |
| Sub Type: | None |
| UniProt Protein Function: | CCNE1: a member of the highly conserved cyclin family, whose members are characterized by a dramatic periodicity in protein abundance through the cell cycle. Cyclins function as regulators of CDK kinases. Forms a complex with and functions as a regulatory subunit of CDK2, whose activity is required for cell cycle G1/S transition. Accumulates at the G1-S phase boundary and is degraded as cells progress through S phase. Two alternatively spliced isoforms have been described. |
| UniProt Protein Details: | Protein type:Nuclear receptor co-regulator; Cell cycle regulation; Activator Chromosomal Location of Human Ortholog: 19q12 Cellular Component: cytosol; nucleoplasm; nucleus Molecular Function:protein binding Biological Process: G1/S transition of mitotic cell cycle; G1/S-specific transcription in mitotic cell cycle; protein amino acid phosphorylation |
| NCBI Summary: | The protein encoded by this gene belongs to the highly conserved cyclin family, whose members are characterized by a dramatic periodicity in protein abundance through the cell cycle. Cyclins function as regulators of CDK kinases. Different cyclins exhibit distinct expression and degradation patterns which contribute to the temporal coordination of each mitotic event. This cyclin forms a complex with and functions as a regulatory subunit of CDK2, whose activity is required for cell cycle G1/S transition. This protein accumulates at the G1-S phase boundary and is degraded as cells progress through S phase. Overexpression of this gene has been observed in many tumors, which results in chromosome instability, and thus may contribute to tumorigenesis. This protein was found to associate with, and be involved in, the phosphorylation of NPAT protein (nuclear protein mapped to the ATM locus), which participates in cell-cycle regulated histone gene expression and plays a critical role in promoting cell-cycle progression in the absence of pRB. [provided by RefSeq, Apr 2016] |
| UniProt Code: | P24864 |
| NCBI GenInfo Identifier: | 3041657 |
| NCBI Gene ID: | 898 |
| NCBI Accession: | P24864.2 |
| UniProt Secondary Accession: | P24864,Q14091, Q8NFG1, Q92501, Q9UD21, A8K684, |
| UniProt Related Accession: | P24864 |
| Molecular Weight: | 45,150 Da |
| NCBI Full Name: | G1/S-specific cyclin-E1 |
| NCBI Synonym Full Names: | cyclin E1 |
| NCBI Official Symbol: | CCNE1 |
| NCBI Official Synonym Symbols: | CCNE; pCCNE1 |
| NCBI Protein Information: | G1/S-specific cyclin-E1 |
| UniProt Protein Name: | G1/S-specific cyclin-E1 |
| UniProt Gene Name: | CCNE1 |
| UniProt Entry Name: | CCNE1_HUMAN |
| Component | Quantity |
| 96-Well Cell Culture Clear-Bottom Microplate | 2 plates |
| 10X TBS | 24 mL |
| Quenching Buffer | 24 mL |
| Blocking Buffer | 50 mL |
| 15X Wash Buffer | 50 mL |
| Primary Antibody Diluent | 12 mL |
| 100x Anti-Phospho Target Antibody | 60 µL |
| 100x Anti-Target Antibody | 60 µL |
| Anti-GAPDH Antibody | 60 µL |
| HRP-Conjugated Anti-Rabbit IgG Antibody | 12 mL |
| HRP-Conjugated Anti-Mouse IgG Antibody | 12 mL |
| SDS Solution | 12 mL |
| Stop Solution | 24 mL |
| Ready-to-Use Substrate | 12 mL |
| Crystal Violet Solution | 12 mL |
| Adhesive Plate Seals | 2 seals |
The following materials and/or equipment are NOT provided in this kit but are necessary to successfully conduct the experiment:
- Microplate reader able to measure absorbance at 450 nm and/or 595 nm for Crystal Violet Cell Staining (Optional)
- Micropipettes with capability of measuring volumes ranging from 1 µL to 1 ml
- 37% formaldehyde (Sigma Cat# F-8775) or formaldehyde from other sources
- Squirt bottle, manifold dispenser, multichannel pipette reservoir or automated microplate washer
- Graph paper or computer software capable of generating or displaying logarithmic functions
- Absorbent papers or vacuum aspirator
- Test tubes or microfuge tubes capable of storing ≥1 ml
- Poly-L-Lysine (Sigma Cat# P4832 for suspension cells)
- Orbital shaker (optional)
- Deionized or sterile water
*Note: Protocols are specific to each batch/lot. For the correct instructions please follow the protocol included in your kit.
| Step | Procedure |
| 1. | Seed 200 µL of 20,000 adherent cells in culture medium in each well of a 96-well plate. The plates included in the kit are sterile and treated for cell culture. For suspension cells and loosely attached cells, coat the plates with 100 µL of 10 µg/ml Poly-L-Lysine (not included) to each well of a 96-well plate for 30 minutes at 37°C prior to adding cells. |
| 2. | Incubate the cells for overnight at 37°C, 5% CO2. |
| 3. | Treat the cells as desired. |
| 4. | Remove the cell culture medium and rinse with 200 µL of 1x TBS, twice. |
| 5. | Fix the cells by incubating with 100 µL of Fixing Solution for 20 minutes at room temperature. The 4% formaldehyde is used for adherent cells and 8% formaldehyde is used for suspension cells and loosely attached cells. |
| 6. | Remove the Fixing Solution and wash the plate 3 times with 200 µL 1x Wash Buffer for five minutes each time with gentle shaking on the orbital shaker. The plate can be stored at 4°C for a week. |
| 7. | Add 100 µL of Quenching Buffer and incubate for 20 minutes at room temperature. |
| 8. | Wash the plate 3 times with 1x Wash Buffer for 5 minutes each time. |
| 9. | Add 200 µL of Blocking Buffer and incubate for 1 hour at room temperature. |
| 10. | Wash 3 times with 200 µL of 1x Wash Buffer for 5 minutes each time. |
| 11. | Add 50 µL of 1x primary antibodies (Anti-Cyclin E1 Antibody and/or Anti-GAPDH Antibody) to the corresponding wells, cover with Parafilm and incubate for 16 hours (overnight) at 4°C. If the target expression is known to be high, incubate for 2 hours at room temperature. |
| 12. | Wash 3 times with 200 µL of 1x Wash Buffer for 5 minutes each time. |
| 13. | Add 50 µL of 1x secondary antibodies (HRP-Conjugated AntiRabbit IgG Antibody or HRP-Conjugated Anti-Mouse IgG Antibody) to corresponding wells and incubate for 1.5 hours at room temperature. |
| 14. | Wash 3 times with 200 µL of 1x Wash Buffer for 5 minutes each time. |
| 15. | Add 50 µL of Ready-to-Use Substrate to each well and incubate for 30 minutes at room temperature in the dark. |
| 16. | Add 50 µL of Stop Solution to each well and read OD at 450 nm immediately using the microplate reader. |
(Additional Crystal Violet staining may be performed if desired – details of this may be found in the kit technical manual.)
