TOP1 Recombinant Monoclonal Antibody

說明書

中文名稱：

TOP1重組抗體
貨號：

CSB-RA792129A0HU
規格：

￥1320
圖片：
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：

產品詳情
產品評價
相關產品
靶點詳情

產品詳情

產品描述：

CSB-RA792129A0HU TOP1重組單克隆抗體是針對人源拓撲異構酶I（TOP1）開發的高特異性科研試劑。該抗體經多種實驗驗證，適用于Western Blot（1:500-1:5000）、免疫組化（1:50-1:200）、流式細胞術（1:20-1:200）、免疫沉淀（1:200-1:1000）及ELISA檢測，在不同實驗體系中均展現優異的靶標識別能力。TOP1作為關鍵核酸酶，通過調控DNA超螺旋狀態參與基因復制、轉錄及損傷修復，其異常表達與腫瘤發生發展和化療藥物敏感性密切相關。該重組抗體采用單克隆技術制備，具有高親和力和批次穩定性，能精準識別天然構象的TOP1蛋白，適用于探究腫瘤生物學機制、基因組穩定性調控及抗癌藥物作用機理等研究領域，尤其在解析伊立替康等拓撲異構酶抑制劑的作用機制、構建DNA損傷修復模型等實驗中具有重要應用價值。本產品嚴格驗證了交叉反應性，確保實驗數據可靠性，為分子生物學和癌癥研究提供優質工具。
Uniprot No.：

P11387
基因名：

TOP1
別名：

DNA topoisomerase 1 (EC 5.99.1.2) (DNA topoisomerase I), TOP1
反應種屬：

Human
免疫原：

A synthesized peptide derived from human TOP1
免疫原種屬：

Homo sapiens (Human)
標記方式：

Non-conjugated
克隆類型：

Monoclonal
抗體亞型：

Rabbit IgG
純化方式：

Affinity-chromatography
克隆號：

6D8
濃度：

It differs from different batches. Please contact us to confirm it.
保存緩沖液：

Rabbit IgG in 10mM phosphate buffered saline , pH 7.4, 150mM sodium chloride, 0.05% BSA, 0.02% sodium azide and 50% glycerol.
產品提供形式：

Liquid
應用范圍：

ELISA, WB, IHC, FC, IP

推薦稀釋比：

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
儲存條件：

Upon receipt, store at -20°C or -80°C. Avoid repeated freeze.
貨期：

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.

產品評價

靶點詳情

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.
基因功能參考文獻：
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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相關疾病：

A chromosomal aberration involving TOP1 is found in a form of therapy-related myelodysplastic syndrome. Translocation t(11;20)(p15;q11) with NUP98.
亞細胞定位：

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
組織特異性：

Endothelial cells.
數據庫鏈接：

HGNC: 11986

OMIM: 126420

KEGG: hsa:7150

STRING: 9606.ENSP00000354522

UniGene: Hs.472737

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