Human Thymidine Kinase 1,Soluble(TK1) ELISA Kit

Code CSB-E14261h
Size 96T,5×96T,10×96T
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Product Details

Target Name
thymidine kinase 1, soluble
Alternative Names
cytosolic ELISA Kit; KITH_HUMAN ELISA Kit; Thymidine kinase 1 ELISA Kit; Thymidine kinase 1 soluble ELISA Kit; Thymidine kinase 1 soluble isoform ELISA Kit; Thymidine kinase ELISA Kit; Thymidine kinase cytosolic ELISA Kit; TK 1 ELISA Kit; TK 2 ELISA Kit; TK1 ELISA Kit; Tk1a ELISA Kit; Tk1b ELISA Kit; TK2 ELISA Kit
Abbreviation
TK1
Uniprot No.
Species
Homo sapiens (Human)
Sample Types
serum, plasma, tissue homogenates
Detection Range
62.5 pg/mL-4000 pg/mL
Sensitivity
15.6 pg/mL
Assay Time
1-5h
Sample Volume
50-100ul
Detection Wavelength
450 nm
Research Area
Epigenetics and Nuclear Signaling
Assay Principle
quantitative
Measurement
Sandwich
Precision
Intra-assay Precision (Precision within an assay): CV%<8%      
Three samples of known concentration were tested twenty times on one plate to assess.  
Inter-assay Precision (Precision between assays): CV%<10%      
Three samples of known concentration were tested in twenty assays to assess.    
             
Linearity
To assess the linearity of the assay, samples were spiked with high concentrations of human TK1 in various matrices and diluted with the Sample Diluent to produce samples with values within the dynamic range of the assay.
  Sample Serum(n=4)  
1:1 Average % 92  
Range % 90-94  
1:2 Average % 97  
Range % 92-102  
1:4 Average % 99  
Range % 93-105  
1:8 Average % 86  
Range % 82-91  
Recovery
The recovery of human TK1 spiked to levels throughout the range of the assay in various matrices was evaluated. Samples were diluted prior to assay as directed in the Sample Preparation section.
Sample Type Average % Recovery Range  
Serum (n=5) 93 88-97  
EDTA plasma (n=4) 104 102-106  
             
             
Typical Data
These standard curves are provided for demonstration only. A standard curve should be generated for each set of samples assayed.
pg/ml OD1 OD2 Average Corrected  
4000 2.597 2.745 2.671 2.520  
2000 2.155 2.088 2.122 1.971  
1000 1.478 1.568 1.523 1.372  
500 0.836 0.898 0.867 0.716  
250 0.641 0.611 0.626 0.475  
125 0.432 0.422 0.427 0.276  
62.5 0.222 0.218 0.220 0.069  
0 0.147 0.154 0.151    
Troubleshooting
and FAQs
Storage
Store at 2-8°C. Please refer to protocol.
Lead Time
3-5 working days after you place the order, and it takes another 3-5 days for delivery via DHL or FedEx
Description

This Human TK1 ELISA Kit was designed for the quantitative measurement of Human TK1 protein in serum, plasma, tissue homogenates. It is a Sandwich ELISA kit, its detection range is 62.5 pg/mL-4000 pg/mL and the sensitivity is 15.6 pg/mL.

Citations

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Target Background

Gene References into Functions
  1. STK1p is a potential proliferating biomarker for early discover of persons in the risk to develop or already have pre-malignancies or diseases associated with the risk process of malignancy. PMID: 29689706
  2. Data suggest that serum thymidine kinase 1 (S-TK) activity may be a useful parameter for monitoring neoadjuvant therapy (nTx) efficacy. PMID: 29189449
  3. Our study provides the first evidence that serum TK1 activity as early as 2 weeks following CDK4/6 inhibitors is highly correlated with tumor cell proliferation response in patients with early-stage HR+ breast cancer. PMID: 29162134
  4. TK1 might be involved in the development and progression of PDAC by regulating cell proliferation. PMID: 29266545
  5. The detection of TK1 combined with that cytokeratin-19 fragment (CYFRA21-1), CEA or NSE increased the diagnostic value of TK1 for lung squamous cell carcinoma, adenocarcinoma and small cell lung cancer, respectively. PMID: 29247745
  6. The results have implications for the mechanism by which Fhit regulates TK1 mRNA, and more broadly, for its modulation of multiple functions as tumor suppressor/genome caretaker. PMID: 28093273
  7. Results suggest that positive expression of CK19 mRNA and TK1 protein is closely correlated with poor prognosis in advanced gastrointestinal cancer. PMID: 27625087
  8. though TK1 expression was an independent prognostic factor for relapse, but not for survival, TK1 is a more informative expression than Ki-67 for LI, relapse and overall survival rates. Thus, when TK1 is combined with MDACC grading, pTNM staging and lymph node metastasis, IHC determination of TK1 expression may improve the overall prediction of prognosis in patients with ovarian cancer. PMID: 28651488
  9. Data show that the median thymidine kinase (TK1) levels found in sera from breast cancer patients with T1 to T4 stage disease were 0.31, 0.46, 0.47, and 0.55 ng/ml, and these levels significantly differed from healthy controls. PMID: 27079872
  10. STK1 is a reliable biomarker for discovering people with malignant tumors in cancer screening. PMID: 27002755
  11. Serum Thymidine Kinase 1 Activity Following Nephrectomy for Renal Cell Carcinoma and Radiofrequency Ablation of Metastases to Lung and Liver PMID: 27069161
  12. TK1 expression is significantly different in invasive urothelial carcinoma and benign urothelium, which underlines its potential as a diagnostic marker PMID: 26231311
  13. Protein expression of BIRC5, TK1, and TOP2A in malignant peripheral nerve sheath tumours--A prognostic test after surgical resection. PMID: 25769404
  14. High Thymidine Kinase expression is associated with adenocarcinoma in Non-small Cell Lung Cancer. PMID: 25921119
  15. These results demonstrate that there are differences in the specific activities and the subunit compositions of STK1 in hematological malignancies compared with breast and prostate cancer. PMID: 25881026
  16. A regression analysis showed that only TK1 levels were significant (relative risk (RR)=1.03 for each unit, confidence interval (CI)=1-1.05; p=0.015) for diagnosing a true transformation PMID: 25964590
  17. We suggest that a chip including DPYD, TYMS, TYMP, TK1, and TK2 genes is a potential tool to predict response in LARC following fluoropyrimidine-based CCRT. PMID: 24455740
  18. Nuclear TK1 expression in early grade cervical intraepithelial neoplasia predicts risk for progression to malignancy PMID: 23693054
  19. 3'-deoxy-3'-[18F]-fluorothymidine (18F-FLT) kinetics correlates with thymidine kinase-1 expression and cell proliferation in newly diagnosed gliomas PMID: 23229746
  20. The magnitude of maximum fluorodeoxyglucose uptake in primary tumors and the serum TK1 level in patients with metastatic NSCLC were found to be independent prognostic predictors of overall survival. PMID: 23116493
  21. Increased serum level of thymidine kinase 1 correlates with metastatic site in patients with malignant melanoma. PMID: 23179401
  22. results suggest that the serum TK1 protein differs from cellular or recombinant forms, is more active in high molecular weight complexes, and is sensitive to reducing agents PMID: 22741536
  23. Data suggest that serum thymidine kinase 1 (TK1) levels may help to refine risk assessment in the modern immunotherapy era. PMID: 22263569
  24. The crystal structure of the T163S-mutated HuTK1 reveals a less ordered conformation of the ligand thymidine triphosphate compared with the wild-type structure PMID: 22385435
  25. TK1 may be involved in poor survival in patients with pT1 of lung adenocarcinoma PMID: 22143937
  26. frequencies of polymorphic mutations in HIV-1 (subtype B) were compared between patients detected with the 69 insertion (n = 17), Q151M (n = 29), >/=2 thymidine analogue mutations (TAM) 1 (n = 400) or >/=2 TAM 2 (n = 249). PMID: 22027876
  27. data demonstrate that the Flt3L/TK gene therapeutic approach can induce systemic immunological memory capable of recognizing a brain tumor neoantigen in a model of recurrent GBM PMID: 21505426
  28. (18)F-FLT uptake and retention within cells may be complicated by a variety of still undetermined factors in addition to TK1 enzymatic activity PMID: 21764789
  29. Elevated serum thymidine kinase 1 is associated with pre/early cancerous progression. PMID: 21545220
  30. High levels of HER2 and Ki-67 or TK1 expression correlate with the increase of tumor grades and tumor recurrence in meningiomas. PMID: 20450760
  31. Serological thymidine kinase 1 is a useful marker for prognosis in patients with esophageal, cardial and lung carcinomas. PMID: 20479645
  32. Serum TK1 correlates to clinical stages and clinical reactions and monitors the effect of tumor therapies, not only in controlled clinical trials, but also in routine clinical settings. PMID: 20354751
  33. direct involvement of the G-quadruplex motif in transcription of TK1 PMID: 20849417
  34. nucleoside recognition mechanisms for TK1 and TK2 are very different. nonpolar nucleosides are likely to be active in the nucleotide salvage pathway in human cells. PMID: 20560637
  35. Results suggest that higher thymidine levels in the TK- cells caused by defect thymidine salvage to dTTP protects against UV irradiation. PMID: 20544518
  36. The expression of TK1 in tumor tissues correlated to pathological stages and clinical grades of carcinomas (ca) of esophagus, lung and in premalignancy of breast ductal ca. STK1p could monitor the out-come of tumor therapy. PMID: 20544519
  37. more dTTP synthesis via TK1 take place after genotoxic insults in tumor cells, improving DNA repair during G(2) arrest. PMID: 20554529
  38. cell cycle regulation of TK1 in normal tubule cells differ from that in other type of normal and malignant renal cells. PMID: 19957115
  39. Thymidine kinase-1 and thymidylate synthase expression was markedly different between cancer types, suggesting that response to TAS-102 may differ. PMID: 20372850
  40. thymidine kinase has a role in progression of lung cancer PMID: 20592392
  41. TK1 in serum may possess a reference value in the evaluation of treatment and prognosis of non-Hodgkin's lymphoma following chemotherapy. PMID: 20140744
  42. The TK1 model presented supports both K and k positive cooperativity. Three-parameter mass action models can and should replace the 3-parameter Hill model. PMID: 20003201
  43. TK1 gene expression together with TS, TP and DPD gene expression may play important roles in influencing the malignant behavior of epithelial ovarian cancer. PMID: 11992400
  44. Mutation analysis in the coding sequence of thymidine kinase 1 in breast and colorectal cancer PMID: 12699056
  45. Long-term treatment of H9 human lymphoid cells in the presence of dideoxycytidine down-regulated TK1 gene expression and reduced the expression and activity of TK in resistant cells. PMID: 14659972
  46. the enzymatic function at the G2/M phase of TK1 depends on its quaternary structure PMID: 14697231
  47. activation of the APC/C-Cdh1 complex during mitotic exit controls timing of TK1 destruction PMID: 14701726
  48. Activity of thymidine kinase, thymidine phosphorylase and thymidilate synthase in human cancer xenografts to investigate the contribution of these enzymes to the sensitivity of TAS-102. PMID: 14719072
  49. The importance of valine 106 for the structure and function of TK1. PMID: 15153115
  50. activation of TK1 may be critical to modulate the radiation-induced cell death and cell cycle progression in irradiated K562 cells. PMID: 15353126

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Subcellular Location
Cytoplasm.
Protein Families
Thymidine kinase family
Database Links

HGNC: 11830

OMIM: 188300

KEGG: hsa:7083

STRING: 9606.ENSP00000301634

UniGene: Hs.515122

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