AAMP

Official Full Name

angio associated migratory cell protein

Organism

Homo sapiens

Gene ID

Background

The gene is a member of the immunoglobulin superfamily. The encoded protein is associated with angiogenesis, with potential roles in endothelial tube formation and the migration of endothelial cells. It may also regulate smooth muscle cell migration via the RhoA pathway. The encoded protein can bind to heparin and may mediate heparin-sensitive cell adhesion. [provided by RefSeq, Oct 2014]

Synonyms

AM; MCAF; p621; MCAF1; ATF-IP; ATF7IP1

Cat.No.	Product Name	Price
CSC-DC000016	Panoply™ Human AAMP Knockdown Stable Cell Line	Inquiry
CSC-SC000016	Panoply™ Human AAMP Over-expressing Stable Cell Line	Inquiry

Cat.No.	Product Name	Price
AD00422Z	Human AAMP adenoviral particles	Inquiry

Cat.No.	Product Name	Price
SHW002522	shRNA set against Chicken AAMP (NM_001079747)	Inquiry
SHW018076	shRNA set against Danio rerio AAMP (NM_212938)	Inquiry
SHH228614	shRNA set against Human AAMP (NM_001087.3)	Inquiry
SHH228618	shRNA set against Mouse AAMP (NM_146110.3)	Inquiry

Cat.No.	Product Name	Price
CDCB157256	Mouse AAMP ORF clone (NM_146110.2)	Inquiry
CDCR022680	Mouse Aamp ORF clone (NM_001190444.1)	Inquiry
CDFG021455	Mouse Aamp cDNA Clone(NM_001190444.1)	Inquiry
CDFL000717	Mouse Aamp cDNA Clone(NM_146110.3)	Inquiry
MiUTR1H-00010	AAMP miRNA 3'UTR clone	Inquiry
CDCB156055	Rat AAMP ORF clone (NM_001106920.1)	Inquiry
CDCB163997	Chicken AAMP ORF Clone (NM_001079747)	Inquiry
CDCB179551	Danio rerio AAMP ORF Clone (NM_212938)	Inquiry
CDCB187795	Rabbit AAMP ORF clone (XM_002712473.2)	Inquiry
CDCL182510	Human AAMP ORF clone(NM_001087.3)	Inquiry
CDCR268018	Mouse Aamp ORF Clone(NM_146110.3)	Inquiry
CDCS407385	Human AAMP ORF Clone (BC014122)	Inquiry

Detailed Information

AAMP (angio-associated migratory cell protein) has six repeating WD40 domains. Its protein structure also has a large acidic amino acid region, a potential transmembrane region, and a potential serine/threonine phosphorylation site. AAMP is structurally homologous to the cell adhesion molecule proteins NCAM, PECAM (CD31), LFA-2, etc. of the immunoglobulin superfamily (AA231-299). This indicates that AAMP plays a more important role in cell adhesion and migration. The AAMP protein also has a positively charged region at the amino terminus with a strong heparin binding potential similar to PECAM (CD31). PECAM-mediated cell aggregation can be inhibited by heparin and chondroitin sulfate. AAMP-derived peptide P189-mediated cell binding and aggregation can also be inhibited by heparin. P189 can be polymerized into granules and used as a heparin-sensitive cell polymerizer to bind and aggregate MCF-7 breast cancer cells and A2058 melanoma cells.

AAMP's biological function

AAMP is expressed in a variety of tissue cells and is highly expressed in vascular endothelial cells, placental trophoblasts, and poorly differentiated colon cancer cells in lymphatic vessels, suggesting that AAMP may have similar functions in migrating cells. In addition, AAMP is expressed in other cells such as vascular smooth muscle cells (VSMCs), epidermal fibroblasts, T lymphocytes, renal tubular epithelial cells, mesangial cells, muscle cells, and various tumor cells such as melanoma cells, breast cancer cells, prostate cancer cells, etc. The AAMP protein in VSMCs is abundantly distributed in the cytoplasm and extracellular matrix, while in epidermal fibroblasts and mesangial cells, AAMP is mainly located on the surface of cytoplasm and cells, and the distribution in extracellular matrix is less.

AAMP shares a common epitope with α-actinin and rapidly contracting skeletal muscle fibrin (fast muscle fibers). AAMP polyclonal antibodies can compete with α-actinin and AAMP, and AAMP polyclonal antibodies can also immunoreact with fast muscle fibers. Α-actinin protein structure but does not exist in the AAMP of similar sequences, secondary structures may be two or higher order structures produced similar conformational epitopes. However, studies in EA.hy926 cells showed that AAMP does not bind to α-actinin, and there is no co-localization in the cells. This proves that α-actinin and AAMP have similar structures, but the two do not interact directly.

AAMP Figure 1. AAMP polyclonal antibodies can compete with α-actinin and AAMP. (Yin, et al. 2014)

Co-culture of bovine aortic endothelial cells (BAECs) and human astrocytes in the Transwell system resulted in a 53% increase in AAMP outside the BAECs. Therefore, astrocytes increase the amount of AAMP in endothelial cells and may promote angiogenesis in the nervous system. Due to the high expression of AAMP in vascular endothelial cells, Ge et al. listed AAMP as a functional marker molecule for endothelial cells.

AAMP and disease

AAMP is primarily involved in cell migration, so it may be involved in many pathological processes such as tumor invasion and metastasis that have cell migration events. Interference with AAMP expression in the breast cancer cell line MDA-MB-231 had no significant effect on cell proliferation. Yin et al. found that high levels of AAMP transcriptional profiles are associated with breast cancer progression, metastasis, and patient prognosis. Breast cancer patients with lower AAMP expression levels have longer survival than patients with higher AAMP expression levels. Therefore, the expression level of AAMP has a significant effect on the biological function of breast cancer cells, and the high expression level of AAMP means that the prognosis of breast cancer patients is poor and the risk of tumor metastasis is greater.

References:

Pali-Schöll, I., & Jensen-Jarolim, E. (2016). The concept of allergen-associated molecular patterns (aamp). Current Opinion in Immunology, 42, 113-118.
Yin, Y., Sanders, A. J., Feng, L., & Jiang, W. G. (2014). Knockdown of aamp impacts on hecv cell functions in vitro and affects the expression of ve-cadherin. Angiology, 2(2), 1000125.
Ge, R., Hu, L., Tai, Y., Xue, F., Yuan, L., & Wei, G., et al. (2013). Flufenamic acid promotes angiogenesis through ampk activation. International Journal of Oncology, 42(6), 1945-1950.
Yin, Y., Sanders, A. J., & Jiang, W. G. (2013). The impact of angio-associated migratory cell protein (aamp) on breast cancer cells in vitro and its clinical significance. Anticancer Research, 33(4), 1499.
Hu, J., Qiu, J., Zheng, Y., Zhang, T., Yin, T., & Xie, X., et al. (2016). Aamp regulates endothelial cell migration and angiogenesis through rhoa/rho kinase signaling. Annals of Biomedical Engineering, 44(5), 1-3.

Quick Inquiry