CD274 Recombinant Monoclonal Antibody

說明書

中文名稱：

CD274重組抗體
貨號：

CSB-RA878942MA1HU
規格：

￥1320
圖片：
IHC image of CSB-RA878942MA1HU diluted at 1:100 and staining in paraffin-embedded human lung 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°C overnight. The primary is detected by a Goat anti-Mouse IgG labeled by HRP and visualized using 0.05% DAB.

Overlay Peak curve showing Hela cells surface stained with CSB-RA878942MA1HU (red line) at 1:100. Then 10% normal goat serum was Incubated to block non-specific protein-protein interactions followed by the antibody (1μg/1*10⁶cells) for 45 min at 4°C. The secondary antibody used was FITC-conjugated Goat Anti-Mouse IgG(H+L) at 1/200 dilution for 35 min at 4°C. Isotype control antibody (green line) was mouse IgG1 (1μg/1*10⁶cells) used under the same conditions. Acquisition of >10,000 events was performed.
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：

CD274 Recombinant Monoclonal Antibody（Code: CSB-RA878942MA1HU）是一款針對免疫檢查點蛋白PD-L1（程序性死亡配體1）的高特異性試劑，適用于ELISA、免疫組化（IHC）和流式細胞術（FC）檢測。PD-L1作為腫瘤免疫治療的關鍵靶點，廣泛表達于多種癌細胞表面，通過與T細胞表面PD-1受體結合抑制免疫應答，其表達水平與腫瘤微環境免疫逃逸及治療預后密切相關。本抗體經嚴格驗證，在IHC實驗中可清晰定位組織切片中的PD-L1蛋白分布，推薦稀釋比為1:20-1:200；在FC分析中可精準檢測細胞表面PD-L1表達水平，推薦使用同等稀釋范圍。此外，ELISA驗證數據表明其具備優異的抗原結合能力，適用于定量檢測樣本中PD-L1含量。該產品為研究腫瘤免疫調控機制、評估免疫治療相關分子標記物提供了可靠工具，可應用于腫瘤微環境解析、免疫檢查點通路研究及藥物作用機制探索等基礎科研領域。
Uniprot No.：

Q9NZQ7
基因名：

CD274
別名：

B7 H antibody; B7 H1 antibody; B7 homolog 1 antibody; B7-H1 antibody; B7H antibody; B7H1 antibody; CD 274 antibody; CD274 antibody; CD274 antigen antibody; CD274 molecule antibody; MGC142294 antibody; MGC142296 antibody; OTTHUMP00000021029 antibody; PD L1 antibody; PD-L1 antibody; PD1L1_HUMAN antibody; PDCD1 ligand 1 antibody; PDCD1L1 antibody; PDCD1LG1 antibody; PDL 1 antibody; PDL1 antibody; Programmed cell death 1 ligand 1 antibody; Programmed death ligand 1 antibody; RGD1566211 antibody
反應種屬：

Human
免疫原：

Recombinant Human CD274 protein
免疫原種屬：

Homo sapiens (Human)
標記方式：

Non-conjugated
克隆類型：

Monoclonal
抗體亞型：

Mouse IgG
純化方式：

Affinity-chromatography
克隆號：

24D6
濃度：

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

Preservative: 0.03% Proclin 300
Constituents: 50% Glycerol, 0.01M PBS, PH 7.4
產品提供形式：

Liquid
應用范圍：

ELISA, IHC, FC

推薦稀釋比：

Application	Recommended Dilution
IHC	1:20-1:200
FC	1:20-1:200

Protocols：

ELISA Protocol
Immunohistochemistry (IHC) Protocol
Flow cytometry (FC) 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：

Plays a critical role in induction and maintenance of immune tolerance to self. As a ligand for the inhibitory receptor PDCD1/PD-1, modulates the activation threshold of T-cells and limits T-cell effector response. Through a yet unknown activating receptor, may costimulate T-cell subsets that predominantly produce interleukin-10 (IL10).; The PDCD1-mediated inhibitory pathway is exploited by tumors to attenuate anti-tumor immunity and escape destruction by the immune system, thereby facilitating tumor survival. The interaction with PDCD1/PD-1 inhibits cytotoxic T lymphocytes (CTLs) effector function. The blockage of the PDCD1-mediated pathway results in the reversal of the exhausted T-cell phenotype and the normalization of the anti-tumor response, providing a rationale for cancer immunotherapy.
基因功能參考文獻：
1. an HBV-pSTAT3-SALL4-miR-200c axis regulates PD-L1 causing T cell exhaustion PMID: 29593314
2. hypothesized that an oncolytic poxvirus would attract T cells into the tumour, and induce PD-L1 expression in cancer and immune cells, leading to more susceptible targets for anti-PD-L1 immunotherapy PMID: 28345650
3. multivariate Cox hazards regression analysis identified ALCAM and PD-L1 (both P < 0.01) as potential independent risk factors for primary diffuse pleural mesotheliomas PMID: 28811252
4. miR-191-5p was identified to have negative correlation with PD-L1 expression and acted as an independent prognostic factor of OS in patients with colon adenocarcinoma. PMID: 30045644
5. our findings suggest a regulatory mechanism of PD-L1 through data analysis, in vitro and vivo experiments, which is an important factor of immune evasion in GC cells, and CXCL9/10/11-CXCR3 could regulate PD-L1 expression through STAT and PI3K-Akt signaling pathways in GC cells. PMID: 29690901
6. CD163(+)CD204(+) Tumor-associated macrophages possibly play a key role in the invasion and metastasis of oral squamous cell carcinoma by T-cell regulation via IL-10 and PD-L1 production. PMID: 28496107
7. Results demonstrated that the expression of PDL1 in colorectal carcinoma tissue was significantly increased compared with the paracancerous tissue. Blocking PDL1 can inhibit tumor growth by activating CD4+ and CD8+ T cells involved in the immune response. PMID: 30272332
8. miR-574-3p was identified to potentially regulate PD-L1 expression in chordoma, which inversely correlated with PD-L1. Positive PD-L1 expression on tumor cells was associated with advanced stages and TILs infiltration, whereas decreased miR-574-3p level correlated with higher muscle invasion, more severe tumor necrosis and poor patient survival. PMID: 29051990
9. PD-L1 expression was detected in 69% of cases of primary melanoma of the vulva PMID: 28914674
10. PD-L1 tumor cell expression is strongly associated with increased HIF-2alpha expression and presence of dense lymphocytic infiltration in clear cell renal cell carcinoma. PMID: 30144808
11. Different Signaling Pathways in Regulating PD-L1 Expression in EGFR Mutated Lung Adenocarcinoma PMID: 30454551
12. PD-L1, Ki-67, and p53 staining individually had significant prognostic value for patients with stage II and III colorectal cancer PMID: 28782638
13. Challenging PD-L1 expressing cytotoxic T cells as a predictor for response to immunotherapy in melanoma PMID: 30050132
14. Our results confirm and extend prior studies of PD-L1 and provide new data of PD-L2 expression in lymphomas PMID: 29122656
15. Positive PD-L1 expression is indicative of worse clinical outcome in Xp11.2 renal cell carcinoma. PMID: 28522811
16. PD-L1 expression in cancer cells is upregulated in response to DNA double-strand break. PMID: 29170499
17. Targeting PD-L1 Protein is an efficient anti-cancer immunotherapy strategy. (Review) PMID: 30264678
18. Suggest that PD-L1 may play a relevant role in metastatic spread and may be a candidate prognostic biomarker in cutaneous squamous cell carcinoma. PMID: 29742559
19. PD-L1 immunostaining scoring for non-small cell lung cancer based on immunosurveillance parameters. PMID: 29874226
20. SLC18A1 might complement other biomarkers currently under study in relation to programmed cell death protein 1/programmed cell death protein ligand 1 inhibition PMID: 30194079
21. Low PDL1 expression is associated with mammary and extra-mammary Paget disease. PMID: 29943071
22. Low PDL1 mRNA expression is associated with non-muscle-invasive bladder cancer. PMID: 29150702
23. we found that in advanced stage NSCLC patients who received nivolumab, the C allele of PD-L1 rs4143815 and the G allele of rs2282055 were significantly associated with better ORR and PFS. This is the first report that PD-L1 SNP, which was thought to increase PD-L1 expression, is associated with a response to nivolumab. PMID: 28332580
24. PD-L1 expression differs between the two components of lung ASCs. Given the complexity of lung ASCs, their treatment outcomes may be improved by administration of both EGFR TKIs and anti-PD-1/PD-L1 antibodies in cases where EGFR mutations are present and PD-L1 is overexpressed. PMID: 28387300
25. IDO and B7-H1 expressions were observed in patients with pancreatic carcinoma tissues and are important markers for PC malignant progression PMID: 30029936
26. There was higher programmed cell death protein ligand-1(PD-L1) expression in post-treatment EBV DNA-positive patients. Post-treatment positive EBV DNA status maybe a useful biomarker of worse outcomes in early stage -stage extranodal natural killer/T cell lymphoma. PMID: 30116872
27. PD-L1 is a critical TTP-regulated factor that contributes to inhibiting antitumor immunity. PMID: 29936792
28. Structural and functional analyses unexpectedly reveal an N-terminal loop outside the IgV domain of PD-1. This loop is not involved in recognition of PD-L1 but dominates binding to nivolumab, whereas N-glycosylation is not involved in binding at all. PMID: 28165004
29. While mutational analysis appeared similar to that of older patients with OCSCC who lack a smoking history, a comparatively high degree of PD-L1 expression and PD-1/L1 concordance (P=0.001) was found among young female OCSCC patients. PMID: 28969885
30. PD-L1 expression is predictive of survival in diffuse large B-cell lymphoma, irrespective of rituximab treatment. PMID: 29748856
31. PD-L1 expression was augmented on CD8+ T cells in BALF of a patient with smoldering adult T-cell lymphoma and Pneumocystis jiroveci pneumonia. This suggested that the PD-1-PD-L1 system may suppress not only antitumor immunity but also host defense against pathogens and thereby allow establishment of chronic HTLV-1 infection and immunodeficiency. PMID: 28967040
32. MUC1 drives PD-L1 expression in triple-negative breast cancer cells. PMID: 29263152
33. Positive PD-L1 expression was found in 36.8% of inflammatory breast carcinoma (IBC) samples but was not significantly associated with the clinicopathologic variables examined. Worse overall survival (OS) was significantly associated with positive PD-L1, negative estrogen receptor, and triple-negative status. The 5-year OS rate was 36.4% for patients with PD-L1-positive IBC and 47.3% for those with PD-L1-negative. PMID: 29425258
34. PD-L1 expression display a highly variable distribution in clear cell renal cell carcinomas and this particularity should be kept in mind when selecting the tumor samples to be tested for immunotherapy. PMID: 29661736
35. Report relatively low level PD-L1 positivity in treatment-naive acinar prostatic adenocarcinoma. PMID: 30257853
36. High PD-L1 expression is associated with pulmonary metastases in head and neck squamous cell carcinoma. PMID: 29937180
37. these data suggest that DNA-damage signaling is insufficient for upregulating PD-L1 in normal human dermal fibroblasts PMID: 29859207
38. High CD274 expression is associated with Oral Squamous Cell Carcinoma. PMID: 28669079
39. This study provides important evidence of higher levels of agreement of PD-L1 expression in pulmonary metastasis compared with in multiple primary lung cancer, and high positivity of PD-L1 expression in pulmonary metastatic lesions with wild-type EGFR in an Asian population. PMID: 29254651
40. High PD-L1 expression is associated with Mycobacterium avium complex-induced lung disease. PMID: 28169347
41. PD-L1 expression in tumor-associated immune cells may be associated with a higher probability of clinical response to avelumab in metastatic breast cancer PMID: 29063313
42. The expression of PDL1 was significantly increased following treatment with gefitinib. PMID: 29901173
43. These results demonstrated that the IFNGinduced immunosuppressive properties of B7H1 in human BM and WJMSCs were mediated by STAT1 signaling, and not by PI3K/RACalpha serine/threonineprotein kinase signaling PMID: 29901104
44. PD-1/PD-L1 expression is a frequent occurrence in poorly differentiated neuroendocrine carcinomas of the digestive system. PMID: 29037958
45. High CD274 expression is associated with Epithelial Ovarian Cancer. PMID: 30275195
46. Studied expression levels of CD274 molecule (PD-L1) in thymic epithelial tumors. Found PD-L1 expression level correlated with the degree of TET malignancy. PMID: 29850538
47. Authors assessed PD-L1 expression in both tumor cells and tumor-infiltrating immune cells in the tumor specimens (complete histological sections, not tissue microarray). PMID: 28420659
48. We conclude that a subgroup of advanced disease ovarian cancer patients with high grade tumors, expressing PD-L1, may be prime candidates for immunotherapy targeting PD-1 signaling PMID: 29843813
49. PD-L1 expression is a prognostic factor related with poor survival among patients that developed non-small cell lung cancer. PMID: 29614306
50. The inhibition of PTEN also reduced the cancer effects of CD4+ T cells on non-small cell lung cancer (NSCLC) cell lines following miR-142-5p downregulation. Therefore, our study demonstrated that miR-142-5p regulated CD4+ T cells in human NSCLC through PD-L1 expression via the PTEN pathway. PMID: 29767245
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亞細胞定位：

Cell membrane; Single-pass type I membrane protein. Early endosome membrane; Single-pass type I membrane protein. Recycling endosome membrane; Single-pass type I membrane protein.; [Isoform 1]: Cell membrane; Single-pass type I membrane protein.; [Isoform 2]: Endomembrane system; Single-pass type I membrane protein.
蛋白家族：

Immunoglobulin superfamily, BTN/MOG family
組織特異性：

Highly expressed in the heart, skeletal muscle, placenta and lung. Weakly expressed in the thymus, spleen, kidney and liver. Expressed on activated T- and B-cells, dendritic cells, keratinocytes and monocytes.
數據庫鏈接：

HGNC: 17635

OMIM: 605402

KEGG: hsa:29126

STRING: 9606.ENSP00000370989

UniGene: Hs.521989

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