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人 DPP4 / CD26 基因ORF全长cDNA克隆(表达载体), C-Flag 标签

  • Human CD26 / DPP-IV Gene cDNA Clone (full-length ORF Clone), expression ready, C-FLAG-tagged
  • Human CD26 / DPP-IV natural ORF mammalian expression plasmid, C-Flag tag
产品数据评论相关产品实验方法
 DPP4 cDNA Clone产品信息
NCBI注册码:NM_001935.3
参考序列ORF长度:2301bp
cDNA基因描述:Full length Clone DNA of Homo sapiens dipeptidyl-peptidase 4 with C terminal Flag tag.
分子别称:CD26, ADABP, ADCP2, DPPIV, TP103, DPP4
分子种属:Human
载体:pCMV3-C-FLAG
质粒:pCMV3-DPP4-Flag
限制性酶切位点:KpnI + XbaI (6kb + 2.35kb)
Tag序列:FLAG Tag Sequence: GATTACAAGGATGACGACGATAAG
序列信息:Identical with the Gene Bank Ref. ID sequence.
测序引物:T7(TAATACGACTCACTATAGGG) BGH(TAGAAGGCACAGTCGAGG)
( We provide with DPP4 qPCR primers for gene expression analysis, HP100649 )
启动子:Enhanced CMV mammalian cell promoter
Application:Stable or Transient mammalian expression
抗生素(大肠杆菌):Kanamycin
抗生素(哺乳动物细胞):Hygromycin
运输方式:Each tube contains lyophilized plasmid.
储存方法:The lyophilized plasmid can be stored at room temperature for three months.
 DPP4 基因质粒图
Human CD26 / DPP-IV Gene cDNA Clone (full-length ORF Clone), expression ready, C-FLAG-tagged
 DPP4 基因表达验证图
Human CD26 / DPP-IV natural ORF mammalian expression plasmid, C-Flag tag
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Caption:
The plasmid was transfected into 293H adherent cells with Sinofection reagent (Cat# STF01). After 48 h, Immunofluorescence staining of cells. Cells were fixed with 4% PFA, permeabilzed with 0.3% Triton X-100 in PBS, blocked with 10% serum, and incubated with Mouse anti-Flag Tag monoclonal antibody (CST#8146S) at 37℃ 1 hour. Then cells were stained with Goat Anti-mouse IgG secondary antibody. The fluorescent signal is detected by fluorescence microscope. Each expression experiment has negative control.
FLAG Tag Info

FLAG-tag, or FLAG octapeptide, is a polypeptide protein tag that can be added to a protein using recombinant DNA technology. It can be used for affinity chromatography, then used to separate recombinant, overexpressed protein from wild-type protein expressed by the host organism. It can also be used in the isolation of protein complexes with multiple subunits.

A FLAG-tag can be used in many different assays that require recognition by an antibody. If there is no antibody against the studied protein, adding a FLAG-tag to this protein allows one to follow the protein with an antibody against the FLAG sequence. Examples are cellular localization studies by immunofluorescence or detection by SDS PAGE protein electrophoresis.

The peptide sequence of the FLAG-tag from the N-terminus to the C-terminus is: DYKDDDDK (1012 Da). It can be used in conjunction with other affinity tags, for example a polyhistidine tag (His-tag), HA-tag or Myc-tag. It can be fused to the C-terminus or the N-terminus of a protein. Some commercially available antibodies (e.g., M1/4E11) recognize the epitope only when it is present at the N-terminus. However, other available antibodies (e.g., M2) are position-insensitive.

Product nameProduct name
研究背景

Dipeptidyl peptidase-4 (DPP4) or adenosine deaminase complexing protein 2 (ADCP 2) or T-cell activation antigen CD26 is a serine exopeptidase belonging to the S9B protein family that cleaves X-proline dipeptides from the N-terminus of polypeptides, such as chemokines, neuropeptides, and peptide hormones. The enzyme is a type II transmembrane glycoprotein, expressed on the surface of many cell types. It is also present in serum and other body fluids in a truncated form (sCD26/DPPIV). The soluble CD26 (sCD26) as a tumour marker for the detection of colorectal cancer (CRC) and advanced adenomas. As both a regulatory enzyme and a signalling factor, DPP4 has been evaluated and described in many studies. DPP4 inhibition results in increased blood concentration of the incretin hormones glucagon-like peptide-1 (GLP-1) and gastric inhibitory polypeptide (GIP). This causes an increase in glucose-dependent stimulation, resulting in a lowering of blood glucose levels. Recent studies have shown that DPP4 inhibitors can induce a significant reduction in glycosylated haemoglobin (HbA(1c)) levels, either as monotherapy or as a combination with other antidiabetic agents. Research has also demonstrated that DPP4 inhibitors portray a very low risk of hypoglycaemia development, and are a new pharmacological class of drugs for treating Type 2 diabetes.

参考资料
  • Doupis J, et al. (2008) DPP4 inhibitors: a new approach in diabetes treatment. Adv Ther. 25(7): 627-43.
  • Havre PA, et al. (2008) The role of CD26/dipeptidyl peptidase IV in cancer. Front Biosci. 13: 1634-45.
  • De Chiara L, et al. (2009) Soluble CD26 levels and its association to epidemiologic parameters in a sample population. Dis Markers. 7(6): 311-6.
  • Matteucci E, et al. (2009) Dipeptidyl peptidase-4 (CD26): knowing the function before inhibiting the enzyme. Curr Med Chem. 16(23): 2943-51.
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