GHRHR Antibody, FITC conjugated

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Description

Product Overview

The GHRHR Antibody, FITC conjugated is a fluorescently labeled antibody designed to target the Growth Hormone-Releasing Hormone Receptor (GHRHR), a key regulator of growth hormone secretion in the pituitary gland. The antibody is conjugated with Fluorescein Isothiocyanate (FITC), a green-fluorescing dye commonly used in fluorescence microscopy and flow cytometry.

Key Specifications (from product datasheets):

  • Host Species: Rabbit (polyclonal)

  • Reactivity: Human, Mouse, Rat

  • Conjugation: FITC (excitation: 494 nm, emission: 518 nm)

  • Applications: Immunocytochemistry (ICC), Immunofluorescence (IF)

  • Formulation: 0.01M TBS (pH 7.4) with 1% BSA, 0.03% Proclin300, and 50% glycerol .

Functional Applications

This antibody is primarily used to study GHRHR expression and localization in cellular models. Its applications include:

  • Immunofluorescence: Visualizing GHRHR in pituitary somatotrophs or other cell types .

  • Flow Cytometry: Quantifying receptor expression on cell surfaces, particularly in immune cells (e.g., Th17 cells) .

  • Co-localization Studies: Investigating interactions between GHRHR and signaling proteins (e.g., JAK-STAT3 pathway) .

Research Findings

Recent studies highlight the antibody’s utility in diverse research contexts:

3.1. Role in Immune Regulation

  • GHRHR signaling enhances Th17 cell differentiation and promotes autoimmune inflammation via STAT3 activation. FITC-conjugated antibodies were used to confirm receptor expression in Th17 cells .

3.2. Barrier Function Modulation

  • GHRHR antagonists (e.g., GHRHAnt JV-1-36) mitigate barrier dysfunction in endothelial cells by reducing FITC-dextran permeability. This model underscores GHRHR’s role in vascular integrity .

3.3. Aptamer Development

  • X-aptamers targeting GHRHR were validated using co-immunofluorescence assays with FITC-conjugated secondary antibodies, demonstrating high affinity (Kd: 1.21–4.75 nM) .

3.4. Western Blot Validation

  • A related GHRHR antibody (MAB107352) detected a specific band at ~48 kDa in human cancer cell lysates, confirming the receptor’s expression in adenocarcinoma and leukemia models .

Product Comparison

AttributeGHRHR Antibody (FITC) Abcam GHRHR Antibody (ab76263)
ConjugationFITCUnconjugated
ApplicationsICC/IFWB, ICC/IF
ReactivityHu, Ms, RtHuman
Citations-21 publications

Product Specs

Buffer
Preservative: 0.03% Proclin 300
Constituents: 50% Glycerol, 0.01M PBS, pH 7.4
Form
Liquid
Lead Time
Typically, we can ship products within 1-3 business days after receiving your order. Delivery time may vary depending on the purchase method or location. Please consult your local distributor for specific delivery timeframes.
Synonyms
GHRFR antibody; GHRH R antibody; GHRH receptor antibody; Ghrhr antibody; GHRHR_HUMAN antibody; GHRHRpsv antibody; GRF R antibody; GRF receptor antibody; GRFR antibody; Growth hormone releasing factor receptor antibody; Growth hormone releasing hormone receptor antibody; Growth hormone-releasing factor receptor antibody; Growth hormone-releasing hormone receptor antibody
Target Names
Uniprot No.

Target Background

Function
The Growth Hormone Releasing Hormone Receptor (GHRHR) is a G protein-coupled receptor that activates adenylyl cyclase. It plays a crucial role in stimulating somatotroph cell growth, growth hormone gene transcription, and growth hormone secretion.
Gene References Into Functions
  1. Mutations in GHRHR have been linked to pituitary diseases. PMID: 29277338
  2. Research has reported GHRH-R labeling of apocrine glands and neoplastic epithelium in adnexal tumors and apocrine glands of the skin. PMID: 29895126
  3. A single nucleotide variant in the GHRHR gene has been associated with isolated growth hormone deficiency. PMID: 28910730
  4. GHRHR mutations have been implicated in growth hormone deficiency. PMID: 28525353
  5. The pP79L mutation is associated with compromised function, with residual partial activity explaining the mild phenotype. PMID: 27501283
  6. This is the first reported instance of the GHRH-R codon 72 mutation in Sri Lankan patients with confirmed growth hormone deficiency. PMID: 27031974
  7. This study demonstrates that GHRH-R is expressed by the majority of malignant mixed Mullerian tumors in both epithelial and mesenchymal components. PMID: 26535981
  8. New missense mutations and an insertion mutation have been identified in the GHRHR gene in patients with isolated growth hormone deficiency. PMID: 25541890
  9. A reduced stature in older subjects heterozygous for the c.57+1G>A GHRHR mutation suggests different effects of heterozygosis throughout lifespan. PMID: 25761575
  10. This research shows that pGHRH-R and its main splice variant are expressed in thyroid tissue and are upregulated in tumor cells compared to normal thyroid cells. PMID: 25752763
  11. An indel mutation in the growth hormone releasing hormone receptor gene has been linked to isolated growth hormone deficiency. PMID: 25153028
  12. Preliminary findings suggest a higher than average GHRH-R expression in invasive lobular carcinomas and invasive ductal carcinomas associated with casting-type calcifications on the mammogram. PMID: 24479854
  13. Compound heterozygous mutations of the growth hormone-releasing hormone receptor gene are associated with isolated growth hormone deficiency. PMID: 23602557
  14. Genu valgum (knock-knee) was more prevalent in growth hormone deficiency GHRHR mutation patients than controls. PMID: 24057284
  15. A novel splice-disrupting mutation in GHRHR was identified in two siblings, providing evidence that all c.57+1G>A (IVS1+1G>A) mutant chromosomes share the same haplotype ancestor. PMID: 23052699
  16. This study established the GHRHR gene sequence variation map in isolated severe growth hormone deficiency patients and normal adult height. PMID: 22489751
  17. Research has investigated bone quality and metabolism, and its correlation with insulin sensitivity in subjects heterozygous for a null mutation in GHRHR. PMID: 21995288
  18. GHRH-R and Hsp90 have been identified as independent predictive factors of histopathological response to neoadjuvant RCT. PMID: 22160161
  19. This study describes a new frameshift mutation in the coding sequence of exon 4 (corresponding to the extracellular domain of the receptor)(c.391delG) in the GHRHR in a family with isolated GH deficiency. PMID: 21816782
  20. This chapter provides a review of the biology of GHRHR, the mutations affecting its gene, and their effects in homozygous and heterozygous individuals. PMID: 20374725
  21. The homozygous GHRHR mutation was rare, detected only in one Japanese isolated GH deficiency family. PMID: 21044116
  22. Endometriotic stromal cells (ESCs) and transformed human ESCs, but not normal endometrial tissues, expressed GHRH-R mRNA. PMID: 19524226
  23. These results demonstrate, for the first time, the activation of the MAPKs cascade by the splice variant (SV1) receptor. PMID: 19897610
  24. Long lifespan observed in untreated congenital growth hormone deficiency due to a homozygous mutation in the GHRH receptor gene. PMID: 19965916
  25. To investigate whether (splice variant) SV1 mediates mitogenic effects on nonpituitary tissues, SV1 was expressed in 3T3 mouse fibroblasts and the properties of the transfected cells were studied. PMID: 11773624
  26. Results show that mutations in GHRHR are not limited to the coding sequence, and that promoter mutations that impair Pit-1 binding can reduce expression of the GHRHR gene. PMID: 11875102
  27. Human GHRHR isoforms are found in experimental prostate neoplasms in mice, which could explain the effects of GHRH antagonists on prostate cancer growth. PMID: 12126741
  28. Expression of mRNA and splice variants of this receptor has been observed in human malignant bone tumors. PMID: 12220726
  29. Research has examined the possible clinical significance of a polymorphism in the gene of this receptor, suggesting its involvement in acromegaly. PMID: 12220735
  30. Mutations in the GHRH receptor gene are among the most common causes of isolated growth hormone deficiency. PMID: 12424433
  31. Two previously undescribed mutations in GHRHR, predicted to cause complete lack of functional GHRHR protein, were identified: a nonsense mutation in codon 43 (Q43X) and a splice mutation at the beginning of intron 3 (IVS3+1G-->A). PMID: 12444890
  32. The GHRH receptor may be associated with carcinogenesis. PMID: 12867592
  33. An autocrine stimulatory loop between GHRH and the SV1 variant of the GHRH receptor has been observed in primary cancers. PMID: 15362970
  34. GHRH-R has been demonstrated in prostate and breast carcinomas, suggesting potential therapeutic applications for GHRH antagonists in the treatment of prostatic and mammary tumors. PMID: 15944917
  35. Research has analyzed receptors for growth hormone-releasing hormone in human osteosarcomas and Ewing's sarcomas. PMID: 16820890
  36. Heterozygosity for a null GHRHR mutation is not associated with reduced adult stature or serum IGF-I levels, but is linked to changes in body composition and potentially increased insulin sensitivity. PMID: 17356054
  37. The size of individual abdominal organs is influenced differently by severe and congenital lack of GH due to a GHRH-R mutation. PMID: 18034778
  38. Research has investigated the expression of GHRH and its tumoral receptor SV1 in primary human melanomas and dysplastic nevi by immunohistochemistry. No GHRH expression was detected in the specimens tested. PMID: 18255167
  39. Targeting the GHRH receptor may be a therapeutic option for Triple-negative breast cancers. PMID: 18629632
  40. Gsp mutations upregulate GHRHR mRNA expression in GH-secreting pituitary adenoma cells and desensitize the adenoma cells to GHRH in terms of their GHRHR mRNA expression. PMID: 19029774
  41. GHRHR might be one of the most important genes identified so far that affects normal variation in human height. PMID: 19209235
  42. Mutations in GH1 and GHRHR were identified in 41 patients from 21 pedigrees, representing 11.1% of the cohort, with a higher prevalence of mutations in familial cases (38.6%) and in consanguineous pedigrees (75%) of congenital growth hormone deficiency. PMID: 19567534
  43. Common variants of the GNRH1 and GNRHR genes are not associated with the risk of invasive breast cancer in Caucasians. PMID: 19640273
  44. These results provide strong evidence that the splicing mutation IVS8+1G>A of the growth hormone-releasing hormone receptor is a cause of pituitary dwarfism in the Chinese family. PMID: 19733620

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Database Links

HGNC: 4266

OMIM: 139191

KEGG: hsa:2692

STRING: 9606.ENSP00000320180

UniGene: Hs.733003

Involvement In Disease
Growth hormone deficiency, isolated, 1B (IGHD1B)
Protein Families
G-protein coupled receptor 2 family
Subcellular Location
Cell membrane; Multi-pass membrane protein.
Tissue Specificity
Pituitary gland.

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