Recombinant Human Cell surface glycoprotein MUC18 (MCAM), partial

Code CSB-RP104394h
Size $224
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  • (Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel.
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Product Details

Greater than 90% as determined by SDS-PAGE.
Target Names
Uniprot No.
Research Area
Cell Adhesion
Alternative Names
A32 antigen; CD 146; CD146; CD146 antigen; Cell surface glycoprotein MUC18; Cell surface glycoprotein P1H12; Gicerin; Mcam; Melanoma adhesion molecule; Melanoma associated antigen A32; Melanoma associated antigen MUC18; Melanoma associated glycoprotein MUC18; Melanoma cell adhesion molecule; Melanoma-associated antigen A32; Melanoma-associated antigen MUC18; MelCAM; MUC 18; MUC18; MUC18_HUMAN; S endo 1; S endo 1 endothelial associated antigen; S-endo 1 endothelial-associated antigen
Homo sapiens (Human)
Expression Region
Target Protein Sequence
Note: The complete sequence including tag sequence, target protein sequence and linker sequence could be provided upon request.
Mol. Weight
Protein Length
Tag Info
N-terminal 6xHis-tagged
Liquid or Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol.
Note: If you have any special requirement for the glycerol content, please remark when you place the order.
If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. Our default final concentration of glycerol is 50%. Customers could use it as reference.
Troubleshooting and FAQs
Storage Condition
Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Shelf Life
The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Lead Time
Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Datasheet & COA
Please contact us to get it.

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Target Background

Plays a role in cell adhesion, and in cohesion of the endothelial monolayer at intercellular junctions in vascular tissue. Its expression may allow melanoma cells to interact with cellular elements of the vascular system, thereby enhancing hematogeneous tumor spread. Could be an adhesion molecule active in neural crest cells during embryonic development. Acts as surface receptor that triggers tyrosine phosphorylation of FYN and PTK2/FAK1, and a transient increase in the intracellular calcium concentration.
Gene References into Functions
  1. MCAM coordination of apical-basal polarity and planar cell polarity provides insight into the general mechanisms of morphogenesis. PMID: 28589943
  2. CD146 suppresses BC progression as a target of CD44-downstream signaling PMID: 29121955
  3. Cultured early passage ASCs contained low levels of CD146 mRNA, which was expressed in two different splicing variants, at a relatively high amount of the CD146-long form and at a relatively low amount of the CD146-short form. ASCs contained low levels of CD146 protein, which consisted predominantly long form and a small amount of short form. PMID: 28549249
  4. In summary, we have shown that MUC18/Muc18 may serve as a regulator of airway inflammation and mucus overproduction, two important features of type 2-high asthma. Our data suggest that MUC18/Muc18 or its downstream signaling mediators may be targets for potential therapeutic agents. PMID: 28451734
  5. CD146 promoter polymorphisms were not associated with the risk of clear cell renal carcinoma in Chinese population. The rs3923594 was an independent predictor of recurrence in with localized ccRCC. PMID: 28626293
  6. We demonstrate that ER(+) breast cancers contain two CAF subtypes defined by CD146 expression. CD146(neg) CAFs suppress ER expression in ER(+) breast cancer cells, decrease tumor cell sensitivity to estrogen, and increase tumor cell resistance to tamoxifen therapy PMID: 27702820
  7. CD146 functions as a suppressor of tumorigenesis and cancer stemness in CRC through inactivating the canonical Wnt/beta-catenin cascade PMID: 27302922
  8. data identify the anatomy and phenotype of a novel class of committed myogenic progenitor in human post-natal skeletal muscle of subendothelial cells associated with the abluminal surface of microvascular compartment distinct from satellite cells PMID: 29186180
  9. These findings identify CD146 as a novel retention signal that traps macrophages within the artery wall, and a promising therapeutic target in atherosclerosis treatment. PMID: 28084332
  10. CD146 was expressed in all cases of Ph-positive B- cell acute lymphoblastic leukemia and in the vast majority of T-cell acute lymphoblastic leukemia PMID: 26102234
  11. Our results suggest that MCAM may serve as a novel therapeutic target to overcome chemoresistance in SCLC. PMID: 28646020
  12. Authors show that KDM3A regulates MCAM expression both through a direct mechanism, involving modulation of H3K9 methylation at the MCAM promoter, and an indirect mechanism, via the Ets1 transcription factor. PMID: 28319067
  13. increment of CD146 expression indicates gradual change of cultured annulus fibrosus cells to express a contractile phenotype and that transforming growth factor beta1 enhances this cellular commitment PMID: 27273299
  14. CD146 positivity in immunohistological analysis of 11 MRT patient samples was associated with poor patient outcomes. These results suggest that CD146 defines a distinct sub-population in MRT with high tumorigenic capacity and that this marker represents a promising therapeutic target. PMID: 27041577
  15. Promoter methylation of MCAM, ERalpha and ERbeta have a potential to be utilized as biomarker for the early detection of prostate cancer (PC) as their sensitivity and specificity seem to be better than serum PSA. PMID: 28147335
  16. MCAM promotes tamoxifen resistance by transcriptionally suppressing ERalpha expression and activating the AKT pathway, followed by induction of epithelial-mesenchymal transition. PMID: 27838413
  17. High MCAM expression is associated with lung metastasis in malignant melanoma. PMID: 27151304
  18. Results provide evidence that MUC18 promotes viral infections both in vivo and in vitro. PMID: 27701461
  19. soluble CD146 is released from the peripheral vasculature in response to venous stretch and may reflect systemic congestion in chronic heart failure patients PMID: 28062630
  20. results indicate that CD146 can be targeted in vivo by the radiolabeled OI-3 antibodies PMID: 27776176
  21. Findings suggest that decreased CD146 expression in cancer-associated fibroblasts promotes pancreatic cancer progression. PMID: 26373617
  22. METCAM/MUC18 positively promotes tumorigenesis of human breast cancer SK-BR-3 cells via increasing the signal in survival and proliferation pathways. PMID: 27125403
  23. sCD146 levels are elevated in patients with systemic sclerosis, but decreased sCD146 levels are observed in SSc patients with pulmonary arterial hypertension PMID: 27726047
  24. Nestin and CD146 are expressed in breast cancer cells with highly aggressive potency. They might contribute to disease relapse in breast cancer by activating the epithelial-mesenchymal transition pathway and assist tumor neovascularization. PMID: 28347241
  25. The results demonstrated isolation of specific scFv with frequency of 40 % which showed significant binding with the epitope in both ELISA and fluorescence-activated cell sorting (FACS) analyses. The antibody inhibited the migration (76 %) and invasion (67 %) of MUC18 positive cell line. The results suggest the specific anti-MUC18 scFv as an effective antibody for breast cancer immunotherapy PMID: 27565656
  26. We provide the first report that pro-angiogenic genes PECAM1, PTGS1, FGD5, and MCAM may play a vital role in pathological dermal angiogenesis disorders of psoriasis. PMID: 26748901
  27. Results showed that increased human METCAM/MUC18 expression in ovarian cancer SK-OV-3 cells suppressed tumorigenesis and ascites formation in nude mice, suggesting that human METCAM/MUC18 plays a suppressor role in the progression of ovarian cancer, perhaps by reducing proliferation and angiogenesis. PMID: 26906545
  28. CD146 dexpression efines a subpopulation of human mesenchymal stem cells capable of bone formation and in vivo trans-endothelial migration. PMID: 26753846
  29. Results showed that CD146 promoted metastasis of hepatocellular carcinoma (HCC) cells and predicted poor prognosis of HCC patients. CD146 induced epithelial mesenchymal transition through probably IL-8 up-regulation and STAT1 down-regulation. PMID: 26928402
  30. Data indicate that CD146 antigen is an effective cell surface marker for enriching tumor-propagating cells (TPCs) in primary sarcomas. PMID: 26517673
  31. MUC18 is an independent prognostic factor for clear cell renal cell carcinoma PMID: 26617818
  32. CD146 is a novel and useful marker for predicting senescence in human umbilical cord blood-derived Mesenchymal stem cells (hUCB-MSCs), and CD146 can potentially be applied in quality-control assessments of hUCB-MSC-based therapy. PMID: 26941359
  33. ZBTB7A directly binds to the promoter and transcriptionally represses the expression of MCAM, establishing ZBTB7A as a bona fide transcriptional repressor of MCAM PMID: 25995384
  34. The expression of CD146 and HIF1a was positively correlated with EGFR and CD31, respectively in salivary gland adenoid cystic carcinoma. PMID: 25997612
  35. a model that CD166 regulates MCAM through a signaling flow from activation of PI3K/AKT and c-Raf/MEK/ERK signaling to the inhibition of potential MCAM ubiquitin E3 ligases, betaTrCP and Smurf1 PMID: 26004137
  36. Combined EpCAM/MCAM CellSearch enrichment thus increased the CTC detection rate. PMID: 25552367
  37. Results identified MCAM as a novel YAP target in hepatocellular carcinoma (HCC) but not in breast and colon cancer cells. MCAM serum levels were specifically elevated in HCC suggesting it as a specific diagnostic tool for HCC. PMID: 25728681
  38. CD146, P53, and Ki-67 are overexpressed in uterine sarcoma PMID: 26293576
  39. These data suggest CDCP1 expression can be used to identify a subset of marrow fibroblasts functionally distinct from CD146+ fibroblasts. PMID: 25275584
  40. Results show that that CD146 is expressed in 41% of gastric neoplasm cells and correlated positively with lymph node metastasis and epithelial-mesenchymal transition markers making it a good prognostic factor. PMID: 22754372
  41. MCAM is a major GAL-1 ligand is largely dependent on melanoma malignancy. PMID: 25756799
  42. MCAM is expressed by effector CD8+ T lymphocytes and it is strikingly upregulated during multiple sclerosis relapses. MCAM blockade restricts the transmigration of CD8(+) T lymphocytes across human blood-brain barrier endothelial cells. PMID: 25869475
  43. HuMETCAM/MUC18 levels in ovarian carcinomas and metastatic lesions were significantly higher than in normal tissues and cystadenomas. PMID: 25510693
  44. In peripheral stenotic arteriosclerotic disease the proangiogenic potency of MUC18 may play a role in angiogenesis of collaterals, whereas in dilatative aortic diseases the induction of collaterals is typically not evident. PMID: 25729916
  45. Suggest endothelial CD146 as a target for specific drug delivery in hepatocellular carcinoma. PMID: 25238265
  46. Data proposed a novel signaling mechanism by which Sema 3A regulates PTEN, FOXO 3a and MelCAM in a coordinated manner that leads to suppression of breast cancer growth and angiogenesis. PMID: 24727891
  47. Authors conclude therefore that ETs upregulate MCAM in an Akt and ERK/MEK-dependent, but CREB-independent manner, providing an understanding for possible pharmacologic intervention in progressing melanoma. PMID: 24743054
  48. expression behaves as a molecular warning of melanoma progression PMID: 24902661
  49. With the ability of migration and survival in the advanced osteoarthritis cartilage, CD146+ chondroprogenitors might be "tissue-specific" for cartilage tissue regeneration. PMID: 25266708
  50. functional characterization of N-acetylglucosaminyltransferases III and V in human melanoma cells PMID: 24726881

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Subcellular Location
Membrane; Single-pass type I membrane protein.
Tissue Specificity
Detected in endothelial cells in vascular tissue throughout the body. May appear at the surface of neural crest cells during their embryonic migration. Appears to be limited to vascular smooth muscle in normal adult tissues. Associated with tumor progress
Database Links

HGNC: 6934

OMIM: 155735

KEGG: hsa:4162

STRING: 9606.ENSP00000264036

UniGene: Hs.599039

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