Cell Cycle Assay Kit (Fluorometric - Red)[351]

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      Catalog number:E-CK-A351

      Size:
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      Price: $68

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      Introduction

      Elabscience® Cell Cycle Assay Kit (Fluorometric-Red) is a kit that detects cell cycle by detecting DNA content. 


      Detection principle

      Cell cycle refers to the whole process from the end of one mitosis to the end of the next. During this process, the genetic material is replicated and doubled, and evenly distributed to two daughter cells at the end of division. Cell cycle can also be divided into phases like interphase and Metaphase. Intercellular phase can also be divided into dormancy (zero gap, G0), prophase of DNA synthesis (first gap, G1), anaphase of DNA synthesis (synthesis, S) and anaphase of DNA synthesis (second gap, G2). DNA detection can be used to reflect the status of each phase of the cell cycle which is also named cell proliferation. DNA can bind to fluorescent dyes (such as propidium Iodide-PI), the fluorescent dyes binding to DNA at different stages are different, and the fluorescence intensity detected by flow cytometry can also be used to detect different phases in cell cycle. When apoptotic cells occur, apoptotic bodies are produced due to the concentration and nucleolysis of cytoplasm and chromatin, which will change the light scattering properties of cells. In the early stage of apoptosis, the forward scattering (FSC) of cells decreased significantly, while the side scatter (SSC) increased or remained unchanged. In the late stage of apoptosis, both FSC and SSC signals decreased. Therefore, apoptotic cells can be observed by measuring the changes of light scattering by flow cytometry. After staining with PI, assuming that the fluorescence intensity of G0/G1 phase cells is 1, the theoretical value of fluorescence intensity of G2/M phase cells containing double genomic DNA is 2, and the fluorescence intensity of S phase cells undergoing DNA replication is between 1 and 2. Apoptotic cells lost part of genomic DNA fragmentation due to nucleus concentration and DNA fragmentation. Therefore, apoptotic cells showed obvious weak staining after PI staining and the fluorescence intensity was less than 1. The sub-G1 peak appeared on the flow cytometry fluorescence map which is apoptotic cell. The kit can be used to detect the DNA content (cell cycle) of cultured cells (suspension or adherence cells). 


      Components

      Cat. Products 20 Assays 50 Assays 100 Assays Storage
      E-CK-A351A RNase A Reagent 1 mL × 2 5 mL 10 mL -20°C
      E-CK-A351B Propidium Iodide(PI) Staining Solution 8 mL 10 mL × 2  10 mL × 4 2~8°C
      Manual  One Copy


      Storage

      RNase A Reagent [E-CK-A351A] should be stored at -20°C. Propidium Iodide (PI) Staining Solution [E-CKA351B] should be stored at 2~8°C in dark.


      Note

       1. For maximal assay performance, this kit should be used within 12 months. Avoid freeze / thaw cycles.

       2. The experimental results need to be detected by flow cytometry. 

       3. Detect apoptosis as soon as possible after staining to avoid increase in apoptosis or necrosis.

       4. Avoid extended exposure of the samples to direct light to protect the fluorophores from quenching. 

       5. This kit is for research use only. For your safety and health, please wear lab clothes and gloves. Instructions should be followed strictly, changes of operation may result in unreliable results.

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