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  4. TOP1 Recombinant Monoclonal Antibody

TOP1 Recombinant Monoclonal Antibody

说明书
  • 中文名称：
    TOP1重组抗体
  • 货号：
    CSB-RA792129A0HU
  • 规格：
    ￥1320
  • 图片：
    • Western Blot
      Positive WB detected in: Hela whole cell lysate, MCF-7 whole cell lysate, K562 whole cell lysate, HL60 whole cell lysate, PC-3 whole cell lysate
      All lanes: TOP1 antibody at 1:2000
      Secondary
      Goat polyclonal to rabbit IgG at 1/50000 dilution
      Predicted band size: 91 kDa
      Observed band size: 91 kDa
    • IHC image of CSB-RA792129A0HU diluted at 1:100 and staining in paraffin-embedded human small intestine tissue performed on a Leica BondTM system. After dewaxing and hydration, antigen retrieval was mediated by high pressure in a citrate buffer (pH 6.0). Section was blocked with 10% normal goat serum 30min at RT. Then primary antibody (1% BSA) was incubated at 4℃ overnight. The primary is detected by a Goat anti-rabbit IgG polymer labeled by HRP and visualized using 0.05% DAB.
    • IHC image of CSB-RA792129A0HU diluted at 1:100 and staining in paraffin-embedded human colon cancer performed on a Leica BondTM system. After dewaxing and hydration, antigen retrieval was mediated by high pressure in a citrate buffer (pH 6.0). Section was blocked with 10% normal goat serum 30min at RT. Then primary antibody (1% BSA) was incubated at 4℃ overnight. The primary is detected by a Goat anti-rabbit IgG polymer labeled by HRP and visualized using 0.05% DAB.
    • Overlay histogram showing HepG2 cells stained with CSB-RA792129A0HU (red line) at 1:50. The cells were fixed with 70% Ethylalcohol (18h) and then incubated in 10% normal goat serum to block non-specific protein-protein interactions followedby the antibody (1µg/1*106 cells) for 1 h at 4℃.The secondary antibody used was FITC-conjugated goat anti-rabbit IgG (H+L) at 1/200 dilution for 30min at 4℃. Control antibody (green line) was Rabbit IgG (1µg/1*106 cells) used under the same conditions. Acquisition of >10,000 events was performed.
    • Immunoprecipitating TOP1 in K562 whole cell lysate
      Lane 1: Rabbit control IgG instead of CSB-RA792129A0HU in K562 whole cell lysate. For western blotting,a HRP-conjugated Protein G antibody was used as the secondary antibody (1/2000)
      Lane 2: CSB-RA792129A0HU(2µg)+ K562 whole cell lysate(500µg)
      Lane 3: K562 whole cell lysate (10µg)
  • 其他：

产品详情

  • 产品描述：
    CSB-RA792129A0HU TOP1重组单克隆抗体是针对人源拓扑异构酶I（TOP1）开发的高特异性科研试剂。该抗体经多种实验验证，适用于Western Blot（1:500-1:5000）、免疫组化（1:50-1:200）、流式细胞术（1:20-1:200）、免疫沉淀（1:200-1:1000）及ELISA检测，在不同实验体系中均展现优异的靶标识别能力。TOP1作为关键核酸酶，通过调控DNA超螺旋状态参与基因复制、转录及损伤修复，其异常表达与肿瘤发生发展和化疗药物敏感性密切相关。该重组抗体采用单克隆技术制备，具有高亲和力和批次稳定性，能精准识别天然构象的TOP1蛋白，适用于探究肿瘤生物学机制、基因组稳定性调控及抗癌药物作用机理等研究领域，尤其在解析伊立替康等拓扑异构酶抑制剂的作用机制、构建DNA损伤修复模型等实验中具有重要应用价值。本产品严格验证了交叉反应性，确保实验数据可靠性，为分子生物学和癌症研究提供优质工具。
  • Uniprot No.：
    P11387
  • 基因名：
    TOP1
  • 别名：
    DNA topoisomerase 1 (EC 5.99.1.2) (DNA topoisomerase I), TOP1
  • 反应种属：
    Human
  • 免疫原：
    A synthesized peptide derived from human TOP1
  • 免疫原种属：
    Homo sapiens (Human)
  • 标记方式：
    Non-conjugated
  • 克隆类型：
    Monoclonal
  • 抗体亚型：
    Rabbit IgG
  • 纯化方式：
    Affinity-chromatography
  • 克隆号：
    6D8
  • 浓度：
    It differs from different batches. Please contact us to confirm it.
  • 保存缓冲液：
    Rabbit IgG in phosphate buffered saline, pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.
  • 产品提供形式：
    Liquid
  • 应用范围：
    ELISA, WB, IHC, FC, IP
  • 推荐稀释比：
    Application Recommended Dilution
    WB 1:500-1:5000
    IHC 1:50-1:200
    FC 1:20-1:200
    IP 1:200-1:1000
  • Protocols：
    ELISA Protocol
    Western Blotting (WB) Protocol
    Immunohistochemistry (IHC) Protocol
    Flow cytometry (FC) Protocol
    Immunoprecipitation (IP) Protocol
  • 储存条件：
    Upon receipt, store at -20°C or -80°C. Avoid repeated freeze.
  • 货期：
    Basically, we can dispatch the products out in 1-3 working days after receiving your orders. Delivery time maybe differs from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
  • 用途：
    For Research Use Only. Not for use in diagnostic or therapeutic procedures.

产品评价

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TOP1 antibodies

TOP1 Proteins

靶点详情

  • 功能：
    Releases the supercoiling and torsional tension of DNA introduced during the DNA replication and transcription by transiently cleaving and rejoining one strand of the DNA duplex. Introduces a single-strand break via transesterification at a target site in duplex DNA. The scissile phosphodiester is attacked by the catalytic tyrosine of the enzyme, resulting in the formation of a DNA-(3'-phosphotyrosyl)-enzyme intermediate and the expulsion of a 5'-OH DNA strand. The free DNA strand then rotates around the intact phosphodiester bond on the opposing strand, thus removing DNA supercoils. Finally, in the religation step, the DNA 5'-OH attacks the covalent intermediate to expel the active-site tyrosine and restore the DNA phosphodiester backbone. Regulates the alternative splicing of tissue factor (F3) pre-mRNA in endothelial cells. Involved in the circadian transcription of the core circadian clock component ARNTL/BMAL1 by altering the chromatin structure around the ROR response elements (ROREs) on the ARNTL/BMAL1 promoter.
  • 基因功能参考文献：
    1. TOP1 differentially modulates R-loops across the human genome. PMID: 30060749
    2. Results from a study on gene expression variability markers in early-stage human embryos shows that TOP1 is a putative expression variability marker for the 3-day, 8-cell embryo stage. PMID: 26288249
    3. High TOP1 expression is associated with aggressive tumor phenotype in breast cancer. PMID: 26959889
    4. Ru/Fe bimetallic complexes: Synthesis, characterization, cytotoxicity and study of their interactions with DNA/HSA and human topoisomerase IB. PMID: 29107586
    5. two regions of topoisomerase I, the N-terminal and the linker domains, were critical for subnuclear localization of the enzyme. The linker domain and the distal region of the N-terminal domain directed topoisomerase I to the nucleolus, whereas the remaining region of the N-terminal domain was responsible for the nucleoplasmic localization. PMID: 27428351
    6. High TOP1 expression is associated with Colorectal Cancers. PMID: 28870917
    7. HMGA2 potentiates the clinically important topoisomerase I inhibitor irinotecan/SN-38 in trapping the enzyme in covalent DNA-complexes, thereby attenuating transcription. PMID: 27587582
    8. IMMP2L transcription requires Topoisomerase I in human primary astrocytes PMID: 27932244
    9. This work identifies ADP-ribose polymers as key determinant for regulating Top1 subnuclear dynamics. PMID: 27466387
    10. copper(II) thiosemicarbazone complex may hit human topoisomerase IB and that metal coordination can be useful to improve cytotoxicity of this versatile class of compounds PMID: 27431056
    11. High prevalence of anti-topoisomerase I antibody positivity was found among Thai systemic sclerosis patients and this was associated with a high frequency of hand deformity, ACA negativity, a short duration of pulmonary fibrosis in diffuse cutaneous and a lower frequency of Raynaud's phenomenon in limited cutaneous subsets. PMID: 25293362
    12. These findings reveal BAZ1B as a key facilitator of topoisomerase I function during DNA replication that affects the response of cancer cells to topoisomerase I inhibitors. PMID: 27050524
    13. Results identified TOP1 gene copy gain, a loss of chromosome 20, and new yet unreported TOP1 mutations (R364K and G717R) in close proximity to the SN-38 binding site conferring colon cancer cells resistance to the drug. PMID: 27029323
    14. the highest expression of GGH and EGFR was noted in the left-sided colon; the highest expression of DHFR, FPGS, TOP1 and ERCC1 was noted in the rectosigmoid, whereas TYMP expression was approximately equivalent in the right-sided colon and rectum PMID: 26676887
    15. We found that the resistant cell lines showed 7-100 fold increased resistance to SN-38 but remained sensitive to docetaxel and the non-camptothecin Top1 inhibitor LMP400 PMID: 26801902
    16. Data show that the single-molecule supercoil relaxation assay is a sensitive method to elucidate the detailed mechanisms of type IB topoisomerase (Top1) inhibitors and is relevant for the cellular efficacy of Top1 inhibitors. PMID: 26351326
    17. TOP1 bound at promoters was discovered to become fully active only after pause-release. This transition coupled the phosphorylation of the carboxyl-terminal-domain (CTD) of RNA polymerase II (RNAPII) with stimulation of TOP1 above its basal rate, enhancing its processivity. PMID: 27058666
    18. Data show that inhibition of DNA-dependent protein kinase catalytic subunit (DNA-PK) prevents type I DNA topoisomerase (Top1) degradation and proteasome activity in camptothecin (CPT)-treated quiescent WI38 cells. PMID: 26578593
    19. NO-induced down-regulation of topoisomerase I protein. PMID: 26540186
    20. b-ELE could inhibit the proliferation of HepG-2 cells and interfere with the expression and activity of TOPO I and TOPO IIa PMID: 26221582
    21. Acridine derivatives inhibited DNA topoisomerases I and II and prevented proliferation of HL-60 cells. PMID: 25960253
    22. Topoisomerase-1 and -2A gene copy numbers are elevated in mismatch repair-proficient colorectal cancers. PMID: 25777966
    23. Cinobufacini inhibited the proliferation of the HepG-2 cells induced apoptosis in a dose- and time-dependent manner and downregulated the mRNA and protein expression levels of TOPO I and TOPO II PMID: 25815590
    24. YB-1 serves as an intracellular promoter of TOPO1 catalytic activity that enhances camptothecin sensitivity through its direct interaction with TOPO1. PMID: 25539742
    25. We here report that a substantial number of patients with bile duct or pancreatic cancer have increased TOP1 copy number and increased TOP1/centromere-20 ratio. PMID: 25615400
    26. Results show that TOP1 gene is amplified in a subset of breast cancer patients suggesting the gene as a potential biomarker for response to treatment with Top1 inhibitors. PMID: 25855483
    27. Results show that camptothecin resistance status of colorectal cancer cells depend on the phosphorylation of TOP1 and the presence of CD44. PMID: 24960044
    28. varying expression levels of TOP1 and TDP1 polypeptides in multiple colorectal cancer cell lines and in clinical colorectal cancer samples, are reported. PMID: 25522766
    29. CCR6 SNPs are a risk factor for presence of anti-topoisomerase I antibodies in systemic sclerosis. PMID: 26314374
    30. ERCC1-XPF participates in DNA repair of the Top1-DNA damage complex. PMID: 26025908
    31. both TOP1 and TDP1 were upregulated in the tumor tissue compared to the adjacent non-tumor tissue in non-small cell lung cancer tissue PMID: 25987486
    32. mutations at the hydrophobic or charged residues of the putative polymer binding sites do not interfere with the ability of poly(ADP-ribose) to antagonize the antitumor activity of topoisomerase I poisons. PMID: 25227992
    33. No TOP1 copy number changes were found in patients with de novo diffuse large B-cell lymphoma or relapsed DLBCL treated with chemotherapy regimens including TOP2-targeting drugs. PMID: 25931012
    34. Mutation of Gly717Phe in human topoisomerase 1B has an effect on enzymatic function, reactivity to the camptothecin anticancer drug and on the linker domain orientation PMID: 25910424
    35. Top1 cleavage events generate short deletions; Top1 also promotes nick religation at rNMP sites PMID: 25887397
    36. analysis of how human and yeast DNA topoisomerase I domain interactions impact enzyme activity and sensitivity to camptothecin PMID: 25795777
    37. Study describes a molecular mechanism that operates at functional androgen-regulated enhancers and identify DNA topoisomerase I as a critical DNA-nicking enzyme involved in the process of cell-specific, ligand-driven enhancer activation. PMID: 25619691
    38. The combination of Top1 inhibitors with VE-821 inhibited the phosphorylation of ATR and Chk1. PMID: 25269479
    39. DNA topoisomerases I and II are involved in initiating APH-induced common fragile site breakage at RET PMID: 24040417
    40. Collectively, these findings suggest that the combinatorial inhibition of MET and Top1 is a potentially efficacious treatment strategy for Small cell lung cancer . PMID: 24327519
    41. our data show for the first time that HIF-1alpha is strongly correlated with resistance to topoisomerase I inhibitors in hepatocellular carcinoma. PMID: 24362462
    42. Analysis of the dynamical properties of DNA topoisomerase 1B bound to the more biologically relevant supercoiled substrate reveals an increased number of protein-DNA interactions and, most strikingly, the presence of a secondary protein-DNA binding site. PMID: 25056319
    43. homologous recombination seems relevant especially for Top1 and, to a lesser extent, for Top2 inhibitors. We also found and discuss differential pathways among Top1 inhibitors and Top2 inhibitors PMID: 24130054
    44. key factors in a molecular pathway connecting Top1 inhibition and human HIF-1alpha protein regulation and activity, widening the biologic and molecular activity of camptothecin PMID: 24252850
    45. [review] Telangiectasia and anti-CENP or anti-topo I antibodies in the presence of Raynaud's phenomenon and proximal skin thickening increase the sensitivity of a very early diagnosis of systemic sclerosis from 57% to 97%. PMID: 24461384
    46. This property facilitates the deprotonation of the 5' DNA end, suggesting that this is the limiting step in the topoisomerase religation mechanism. PMID: 23368812
    47. These results suggest that topo I is a novel target of erlotinib and a combination of TKIs with topo I inhibitors may be an effective treatment for breast cancer. PMID: 24399039
    48. Critical endogenous pathogenic lesions are associated with neurodegenerative syndromes arising from aberrant TOP-1 DNA. PMID: 24793032
    49. A fully functional linker is required to confer camptothecin sensitivity to topoisomerase I. PMID: 24004603
    50. MiR-23a could directly bind to 3'untranslated region of TOP1 mRNA, and suppress the corresponding protein expression. PMID: 24103454

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  • 相关疾病：
    A chromosomal aberration involving TOP1 is found in a form of therapy-related myelodysplastic syndrome. Translocation t(11;20)(p15;q11) with NUP98.
  • 亚细胞定位：
    Nucleus, nucleolus. Nucleus, nucleoplasm. Note=Diffuse nuclear localization with some enrichment in nucleoli. On CPT treatment, cleared from nucleoli into nucleoplasm. Sumoylated forms found in both nucleoplasm and nucleoli.
  • 蛋白家族：
    Type IB topoisomerase family
  • 组织特异性：
    Endothelial cells.
  • 数据库链接：

    HGNC: 11986

    OMIM: 126420

    KEGG: hsa:7150

    STRING: 9606.ENSP00000354522

    UniGene: Hs.472737

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