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 >  Protein>Thrombospondin-2 >TH2-H52H5

Human Thrombospondin-2 Protein, His Tag

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分子别名(Synonym)

Thrombospondin-2,THBS2,TSP2

表达区间及表达系统(Source)

Human Thrombospondin-2, His Tag (TH2-H52H5) is expressed from human 293 cells (HEK293). It contains AA Gly 19 - Ile 1172 (Accession # P35442-1).

Predicted N-terminus: Gly 19

Request for sequence

蛋白结构(Molecular Characterization)

Thrombospondin-2 Structure

This protein carries a polyhistidine tag at the C-terminus.

The protein has a calculated MW of 129.7 kDa. The protein migrates as 180-200 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.

内毒素(Endotoxin)

Less than 1.0 EU per μg by the LAL method.

纯度(Purity)

>90% as determined by SDS-PAGE.

制剂(Formulation)

Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.

Contact us for customized product form or formulation.

重构方法(Reconstitution)

Please see Certificate of Analysis for specific instructions.

For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.

存储(Storage)

For long term storage, the product should be stored at lyophilized state at -20°C or lower.

Please avoid repeated freeze-thaw cycles.

This product is stable after storage at:

  1. -20°C to -70°C for 12 months in lyophilized state;
  2. -70°C for 3 months under sterile conditions after reconstitution.

质量管理控制体系(QMS)

  1. 质量管理体系(ISO, GMP)
  2. 质量优势
  3. 质控流程
 

电泳(SDS-PAGE)

Thrombospondin-2 SDS-PAGE

Human Thrombospondin-2, His Tag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 90% (With Star Ribbon Pre-stained Protein Marker).

 

活性(Bioactivity)-SPR

Thrombospondin-2 SPR

Human CD36, His Tag (Cat. No. CD6-H5221) immobilized on CM5 Chip can bind Human Thrombospondin-2, His Tag (Cat. No. TH2-H52H5) with an affinity constant of 21 nM as determined in a SPR assay (Biacore 8K) (Routinely tested).

Protocol

 
评论(1)
  1. 151XXXXXXX3
  2. 4人赞
  3. 使用Acro的产品很久了,不管是产品还是技术,每次都是有问题及时解决。用过的GITR蛋白,做过SPR实验,6个浓度梯度做,拟合曲线也很不错,数据也是达到我的预期,希望以后还是合作愉快。
  4. 2019-9-27
  1. 181XXXXXXX2
  2. 0人赞
  3. 购买该产品主要用于小鼠免疫和体外功能实验。在小鼠免疫方面,二免时使用猴GITR蛋白,流式检测效价时小鼠血清与猴GITR有比较好的结合,能达到10万效价。体外实验主要是进行抗体的亲和力筛选,蛋白活性很好,抗体分子与该蛋白有比较好的结合/解离曲线。后续会一直使用此款产品。
  4. >
  5. 2023-3-9
 
ACRO质量管理体系
 
 

背景(Background)

Thrombospondin-2 is also known as THBS2, TSP2, TSP-2. Thrombospondin-2 (TSP2) is an anti-angiogenic matricellular protein that inhibits tumor growth and angiogenesis. Adhesive glycoprotein that mediates cell-to-cell and cell-to-matrix interactions. Ligand for CD36 mediating antiangiogenic properties. 2 SNPs in the intron region of THBS2 gene (rs6422747 and rs6422748) were associated with susceptibility of IDD. However, they were not related with severity of IDD, including the total number of degenerative disc and level of IDD. Thrombospondin 2, an important regulator of synaptogenesis in central nervous system development, was distributed in retinal macroglia cells, and its receptor α2δ-1 was in retinal neurons. activated macroglia cells may participate in alterations of presynaptic proteins of retinal neurons following elevated hydrostatic pressure, and macroglia-derived thrombospondin 2 may modulate these changes via binding to its neuronal receptor α2δ-1.

 

前沿进展

Loncastuximab Tesirine Versus Polatuzumab Vedotin Plus Bendamustine and Rituximab in Relapsed/Refractory DLBCL After ≥ 2 Lines of Therapy: Matching-Adjusted Indirect Comparison
Wilson, Chiodi, Paine et al
Adv Ther (2025)
Abstract: Despite recent approvals of new treatments, relapsed/refractory (R/R) diffuse large B-cell lymphoma (DLBCL) remains challenging to treat, with limited durable responses and a high proportion of patients relapsing after two or more lines of therapy. Loncastuximab tesirine (Lonca) is a highly potent CD19-targeted antibody drug conjugate with convenient dosing for patients with third-line R/R DLBCL.In the absence of head-to-head trials, unanchored matching-adjusted indirect comparisons (MAICs) were conducted to compare the relative efficacy and safety of Lonca with polatuzumab vedotin + bendamustine and rituximab (Pola + BR).Four studies included in the MAICs were identified via systematic review and hand-searching. Lonca (LOTIS-2) was compared with three comparator studies for Pola + BR (GO29365 extension study, COTA database, Dal et al. 2023). Overall, there was no evidence of a difference in overall response and complete response (CR) rates. Despite Pola + BR demonstrating a higher CR rate in the GO29365 extension study, this did not translate into significant improvements in progression-free or overall survival. Survival analyses indicated similar efficacy between treatments across studies, with most comparisons/meta-analyses showing no statistically significant differences. Lonca had significantly lower odds of Grade 3-4 infections, any serious adverse event (SAE), and specific SAEs including febrile neutropenia, pneumonia and pyrexia. Of the safety endpoints analyzed, none indicated significant differences in favor of Pola + BR.These results suggest no evidence of a difference in efficacy between the two treatments and potentially more favorable safety profile for Lonca compared with Pola + BR in patients with R/R DLBCL after two or more lines of treatment.© 2025. The Author(s).
18F-FDG PET radiomics score construction by automatic machine learning for treatment response prediction in elderly patients with diffuse large B-cell lymphoma: a multicenter study
Zhao, Zhao, Chen et al
J Cancer Res Clin Oncol (2025) 151 (3), 125
Abstract: To explore the development and validation of automated machine learning (AutoML) models for 18F-FDG PET imaging-based radiomics signatures to predict treatment response in elderly patients with diffuse large B-cell lymphoma (DLBCL).A retrospective analysis was conducted on 175 elderly (≥ 60 years) DLBCL patients diagnosed between March 2015 and March 2023 at two medical centers, with a total of 1010 lesions. The baseline PET imaging-based radiomics features of the training cohort were processed using AutoML model AutoGluon to generate a radiomics score (radscore) and predict treatment response at the lesion and patient levels. Furthermore, a multivariable logistic analysis was used to design and evaluate a multivariable model in the training and validation cohorts.ROC curve analysis showed that the radscore generated by AutoML exhibited higher accuracy in predicting treatment response at the lesion level compared to metabolic parameters (SUVmax, MTV, and TLG) in both the training group (AUC: 0.791, 0.542, 0.667, 0.651, respectively) and the validation group (AUC: 0.712, 0.616, 0.639, 0.657, respectively). Multivariable logistic analysis indicated that NCCN-IPI (OR = 5.427, 95% CI: 1.163-25.317), BCL-2 (OR = 3.714, 95% CI: 1.406-9.816), TMTV (OR = 4.324, 95% CI: 1.095-17.067), and avg-radscore (OR = 3.176, 95% CI: 1.313-7. 686) were independent predictors of treatment response. The multivariable model comprising NCCN-IPI, BCL-2, TMTV, and avg-radscore outperformed conventional models and clinical-pathological models in predicting treatment response. (P<0.05).The radscore generated by AutoML can predict the treatment response of elderly DLBCL patients, potentially aiding in clinical decision-making.© 2025. The Author(s).
Breaking Grounds: A Comprehensive Analysis of Cutting-Edge Treatments for Primary Biliary Cirrhosis/Primary Biliary Cholangitis With Futuristic Treatments
Khan, Ul Haq, Wahab et al
Cureus (2025) 17 (2), e79582
Abstract: Primary biliary cholangitis (PBC) is an autoimmune disorder characterized by biliary destruction leading to intrahepatic biliary cholestasis. It predominantly affects women during the fifth and sixth decades. Treatment options have progressed from ursodeoxycholic acid (UDCA) and obeticholic acid (OCA) to liver and stem cell transplant. The objectives include summarizing established and new diagnostic approaches for PBC along with reviewing efficacy treatments, their side effects, and future directions. The treatment of PBC is based on risk stratification, including assessment of the patient's age, sex, clinical pattern, biochemical and antibody profile, histology, and markers of fibrosis. UDCA and OCA are Food and Drug Administration (FDA) approved first-line and second-line agents. Elafibranor, a recently FDA-approved agent based on its efficacy, was shown in the ELATIVE trial. Seladelpar, currently under FDA review in the ENHANCE III trial, is also used in PBC. Fibrates, a third-line treatment, are found efficacious in different trials. Other treatment options are in phase II/III clinical trials. The question of whether we use immunotherapy has been answered in the NCT02376335 and NCT00746486 trials, stating that rituximab and budesonide cannot be used as no clinical significance is observed. The emergence of new therapies and the potential of combination treatments offer hope for improving outcomes for all patients with PBC. Personalized treatment strategies, continuous monitoring, and a comprehensive approach to symptom management are key to optimizing care and enhancing the quality of life for individuals affected by this chronic liver disease.Copyright © 2025, Khan et al.
MYD88-mutated Lymphoplasmacytic Lymphoma With Monoclonal Immunoglobulin G: A Case Report
Isaksen, Vintermyr, Reikvam
EJHaem (2025) 6 (2), e70027
Abstract: Lymphoplasmacytic lymphomas (LPL) are usually associated with serum monoclonal immunoglobulin M (IgM). Nevertheless, in some cases, these cells may secrete IgA or IgG monoclonal proteins or remain non-secretory. We report a case from a patient with LPL-secreting IgG who developed anaemia and splenomegaly during the disease course that necessitated treatment with bortezomib, dexamethasone, and rituximab. The case illustrates the need for clinicians and pathologists to consider LPLs as a differential diagnosis also without a serum monoclonal IgM. Clinical Trial Registration: The authors have confirmed clinical trial registration is not needed for this submission.© 2025 The Author(s). eJHaem published by British Society for Haematology and John Wiley & Sons Ltd.
Showing 1-4 of 34341 papers.
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