Human Cold-inducible RNA-binding protein(CIRBP) ELISA kit

Code CSB-EL005440HU
Size 96T,5×96T,10×96T
Trial Size 24T ELISA kits trial application
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Product Details


This Human CIRBP ELISA Kit was designed for the quantitative measurement of Human CIRBP protein in serum, plasma, tissue homogenates, cell lysates. It is a Sandwich ELISA kit, its detection range is 12.5 pg/mL-800 pg/mL and the sensitivity is 3.12 pg/mL.

Target Name cold inducible RNA binding protein
Alternative Names A18 hnRNP ELISA Kit; A18HNRNP ELISA Kit; cirbp ELISA Kit; CIRBP_HUMAN ELISA Kit; CIRP ELISA Kit; Cold inducible RNA binding protein ELISA Kit; Cold-inducible RNA-binding protein ELISA Kit; Glycine rich RNA binding protein ELISA Kit; Glycine-rich RNA-binding protein CIRP ELISA Kit; testicular tissue protein Li 39 ELISA Kit
Abbreviation CIRBP
Uniprot No. Q14011
Species Homo sapiens (Human)
Sample Types serum, plasma, tissue homogenates, cell lysates
Detection Range 12.5 pg/mL-800 pg/mL
Sensitivity 3.12 pg/mL
Assay Time 1-5h
Sample Volume 50-100ul
Detection Wavelength 450 nm
Research Area Neuroscience
Assay Principle quantitative
Measurement Sandwich
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.
To assess the linearity of the assay, samples were spiked with high concentrations of human CIRBP in various matrices and diluted with the Sample Diluent to produce samples with values within the dynamic range of the assay.
1:5Average %94
Range %89-98
1:10Average %95
Range %91-99
1:20Average %89
Range %85-95
1:40Average %92
Range %86-99
The recovery of human CIRBP 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 TypeAverage % RecoveryRange
Serum (n=5) 9284-99
EDTA plasma (n=4)9890-105
Typical Data
These standard curves are provided for demonstration only. A standard curve should be generated for each set of samples assayed.
8002.115 2.215 2.165 2.024
4001.617 1.717 1.667 1.526
2001.057 1.017 1.037 0.896
1000.692 0.702 0.697 0.556
500.398 0.408 0.403 0.262
250.311 0.321 0.316 0.175
12.50.199 0.195 0.197 0.056
00.141 0.140 0.141  
ELISA Data Analysis Watch ELISA data processing video & download Curve Expert if needed
and FAQs
Storage Store at 2-8°C. Please refer to protocol.
Lead Time 3-5 working days

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Target Background

(From Uniprot)
Cold-inducible mRNA binding protein that plays a protective role in the genotoxic stress response by stabilizing transcripts of genes involved in cell survival. Acts as a translational activator. Seems to play an essential role in cold-induced suppression of cell proliferation. Binds specifically to the 3'-untranslated regions (3'-UTRs) of stress-responsive transcripts RPA2 and TXN. Acts as a translational repressor. Promotes assembly of stress granules (SGs), when overexpressed.
Gene References into Functions
  1. The serum and synovial concentrations of CIRP in the rheumatoid arthritis patients were increased, suggesting that CIRP mediates inflammation and is a potential marker for synovial inflammation. PMID: 27315340
  2. This study reports that cold-inducible RNA-binding protein (CIRBP) is a newly identified key regulator in DNA double-strand break (DSB) repair. PMID: 29432179
  3. Crystal structure of the hnRNP A18 RNA recognition motif has been reported. PMID: 28368279
  4. cold temperature can induce an airway inflammatory response and excess mucus production via a CIRP-mediated increase in mRNA stability and protein translation PMID: 27477308
  5. CIRP Expression Is Induced in Skin Cancer Cells and in Keratinocytes Exposed to Lower-Dose But Not Higher-Dose UVB Radiation. PMID: 27864909
  6. In human abdominal aortic aneurysm (AAA) tissue, Cold-inducible RNA-binding protein (CIRP) exhibited a 5.6-fold and 93% increase in mRNA and protein expression, respectively. In a rat AAA model, CIRP was upregulated significantly in a time-dependent manner in the serum and AAA tissue. PMID: 26936526
  7. We found out that the link between CIRP and Snail is mediated by ERK and p38 pathways. EMT is a critical component of carcinoma metastasis and invasion. As demonstrated in this study, the biological role of CIRP in EMT may explain why CIRP overexpression has been associated with a bad prognosis in cancer patients. PMID: 27395339
  8. CIRP was expressed in the bronchi of human COPD patients and was involved in inflammatory factors and MUC5AC expression after cold stimulation through the ERK and NF-kappaB pathways PMID: 27184164
  9. Low CIRP expression is associated with colon Cancer. PMID: 28373441
  10. this study shows that CIRP expression in bronchial airway epithelial cells of patients with chronic obstructive pulmonary disease is higher than that in healthy person PMID: 27423012
  11. We generated a transgenic mouse model overexpressing human CIRP in the mammary epithelium to ask if it plays a role in mammary gland development. Effects of CIRP overexpression on mammary gland morphology, cell proliferation, and apoptosis were studied from puberty through pregnancy, lactation and weaning PMID: 27837912
  12. Increased synovial fluid CIRP concentrations were closely associated with the severity of knee osteoarthritis PMID: 27840101
  13. hnRNP A18 can promote tumor growth in in vivo models by coordinating the translation of pro-survival transcripts to support the demands of proliferating cells and increase survival under cellular stress. PMID: 26824423
  14. Clinically, CIRP overexpression is significantly correlated with Cushing's disease recurrence. CIRP appears to play a critical tumorigenesis function in Cushing's disease and its expression might be a useful biomarker for tumor recurrence. PMID: 26824322
  15. CIRP protein regulates telomerase activity in a temperature-dependent manner by regulating the level of TERT mRNAs. PMID: 26673712
  16. Study shows that CIRP elevated plasma concentration is significantly associated with poor prognosis among patients with sepsis. Therefore, CIRP is a potential predictor of sepsis prognosis. PMID: 26361390
  17. The expression of CIRP in pituitary adenoma is closely related with tumor proliferation and invasion, and its significantly elevated expression level indicates post-op recurrence. PMID: 25934796
  18. CIRP inhibits DNA damage-induced apoptosis by regulating p53 protein.CIRP suppresses p53 upregulation during apoptosis.CIRP regulates the expression of genes involved in apoptosis. PMID: 26188505
  19. High levels of CIRP protein expression was associated with a short survival rate in oral squamous cell carcinoma patients. PMID: 25027624
  20. Cirp promotes the development of intestinal inflammation and colorectal tumors through regulating apoptosis and production of TNFalpha and IL23 in inflammatory cells. PMID: 25187386
  21. report increased levels of cold-inducible RNA-binding protein (CIRP) in the blood of individuals admitted to the surgical intensive care unit with hemorrhagic shock PMID: 24097189
  22. CIRBP regulates the expression of interleukin-1beta in an NF-kappaB-dependent fashion. PMID: 23437386
  23. CIRBP contributes to ultraviolet light- and lipopolysaccharide-induced expression of IL1beta by regulating NFkappaB activity. PMID: 23437386
  24. results suggest that cold inducible RNA binding protein may participate in the cell cycle regulation of normal endometrium and the loss of its expression may be involved in endometrial carcinogenesis PMID: 12819390
  25. RBM3 and CIRP are adaptatively expressed in response to hypoxia by a mechanism that involves neither HIF-1 nor mitochondria PMID: 15075239
  26. CIRP enhanced extracellular signal-regulated kinase 1 and 2 (ERK1/2) phosphorylation, and treatment with an MEK inhibitor decreased the proliferation caused by CIRP. PMID: 19158277
  27. pharmacological modulation of RBM3 and CIRBP may represent novel therapeutic approaches for prostate cancer. PMID: 19277990

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Subcellular Location Nucleus, nucleoplasm. Cytoplasm.
Tissue Specificity Ubiquitous.
Database Links

HGNC: 1982

OMIM: 602649

KEGG: hsa:1153

STRING: 9606.ENSP00000322887

UniGene: Hs.618145

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