Neuropilin-1 is a protein that in humans is encoded by the NRP1gene.[1][2][3] In humans, the neuropilin 1 gene is located at 10p11.22. This is one of two human neuropilins.
NRP1 is a membrane-bound coreceptor to a tyrosine kinase receptor for both vascular endothelial growth factor (VEGF; MIM 192240) and semaphorin (see SEMA3A; MIM 603961) family members. NRP1 plays versatile roles in angiogenesis, axon guidance, cell survival, migration, and invasion.[supplied by OMIM][3]
Neuropilin 1 has been implicated in the vascularization and progression of cancers. NRP1 expression has been shown to be elevated in a number of human patient tumor samples, including brain, prostate, breast, colon, and lung cancers and NRP1 levels are positively correlated with metastasis.[5][6][7][8][9][10]
In prostate cancer NRP1 has been demonstrated to be an androgen-suppressed gene, upregulated during the adaptive response of prostate tumors to androgen-targeted therapies and a prognostic biomarker of clinical metastasis and lethal PCa.[5] In vitro and in vivo mouse studies have shown membrane bound NRP1 to be proangiogenic and that NRP1 promotes the vascularization of prostate tumors.[11]
Elevated NRP1 expression is also correlated with the invasiveness of non-small cell lung cancer both in vitro and in vivo.[10]
Target for cancer therapies
As a co-receptor for VEGF, NRP1 is a potential target for cancer therapies. A synthetic peptide, EG3287, was generated in 2005 and has been shown to block NRP1 activity.[12] EG3287 has been shown to induce apoptosis in tumor cells with elevated NRP1 expression.[12] A patent for EG3287 was filed in 2002 and approved in 2003.[13] As of 2015 there were no clinical trials ongoing or completed for EG3287 as a human cancer therapy.
Soluble NRP1 has the opposite effect of membrane bound NRP1 and has anti-VEGF activity. In vivo mouse studies have shown that injections of sNRP-1 inhibits progression of acute myeloid leukemia in mice.[14]
References
↑ 1.01.1Soker S, Takashima S, Miao HQ, Neufeld G, Klagsbrun M (March 1998). "Neuropilin-1 is expressed by endothelial and tumor cells as an isoform-specific receptor for vascular endothelial growth factor". Cell. 92 (6): 735–45. doi:10.1016/S0092-8674(00)81402-6. PMID9529250.
↑Chen H, Chédotal A, He Z, Goodman CS, Tessier-Lavigne M (September 1997). "Neuropilin-2, a novel member of the neuropilin family, is a high affinity receptor for the semaphorins Sema E and Sema IV but not Sema III". Neuron. 19 (3): 547–59. doi:10.1016/S0896-6273(00)80371-2. PMID9331348.
↑Mamluk R, Gechtman Z, Kutcher ME, Gasiunas N, Gallagher J, Klagsbrun M (July 2002). "Neuropilin-1 binds vascular endothelial growth factor 165, placenta growth factor-2, and heparin via its b1b2 domain". The Journal of Biological Chemistry. 277 (27): 24818–25. doi:10.1074/jbc.M200730200. PMID11986311.
↑ 5.05.1Tse BW, Volpert M, Ratther E, Stylianou N, Nouri M, McGowan K, Lehman ML, McPherson SJ, Roshan-Moniri M, Butler MS, Caradec J, Gregory-Evans CY, McGovern J, Das R, Takhar M, Erho N, Alshalafa M, Davicioni E, Schaeffer EM, Jenkins RB, Ross AE, Karnes RJ, Den RB, Fazli L, Gregory PA, Gleave ME, Williams ED, Rennie PS, Buttyan R, Gunter JH, Selth LA, Russell PJ, Nelson CC, Hollier BG (January 2017). "Neuropilin-1 is upregulated in the adaptive response of prostate tumors to androgen-targeted therapies and is prognostic of metastatic progression and patient mortality". Oncogene. doi:10.1038/onc.2016.482. PMID28092670.
↑Fakhari M, Pullirsch D, Abraham D, Paya K, Hofbauer R, Holzfeind P, Hofmann M, Aharinejad S (January 2002). "Selective upregulation of vascular endothelial growth factor receptors neuropilin-1 and -2 in human neuroblastoma". Cancer. 94 (1): 258–63. doi:10.1002/cncr.10177. PMID11815985.
↑Latil A, Bièche I, Pesche S, Valéri A, Fournier G, Cussenot O, Lidereau R (March 2000). "VEGF overexpression in clinically localized prostate tumors and neuropilin-1 overexpression in metastatic forms". International Journal of Cancer. 89 (2): 167–71. doi:10.1002/(SICI)1097-0215(20000320)89:2<167::AID-IJC11>3.0.CO;2-9. PMID10754495.
↑Bachelder RE, Crago A, Chung J, Wendt MA, Shaw LM, Robinson G, Mercurio AM (August 2001). "Vascular endothelial growth factor is an autocrine survival factor for neuropilin-expressing breast carcinoma cells". Cancer Research. 61 (15): 5736–40. doi:10.3892/ijo.32.1.41. PMID11479209.
↑ 10.010.1Hong TM, Chen YL, Wu YY, Yuan A, Chao YC, Chung YC, Wu MH, Yang SC, Pan SH, Shih JY, Chan WK, Yang PC (August 2007). "Targeting neuropilin 1 as an antitumor strategy in lung cancer". Clinical Cancer Research. 13 (16): 4759–68. doi:10.1158/1078-0432.CCR-07-0001. PMID17699853.
↑Miao HQ, Lee P, Lin H, Soker S, Klagsbrun M (December 2000). "Neuropilin-1 expression by tumor cells promotes tumor angiogenesis and progression". FASEB Journal. 14 (15): 2532–9. doi:10.1096/fj.00-0250com. PMID11099472.
Zachary I, Gliki G (February 2001). "Signaling transduction mechanisms mediating biological actions of the vascular endothelial growth factor family". Cardiovascular Research. 49 (3): 568–81. doi:10.1016/S0008-6363(00)00268-6. PMID11166270.
He Z, Tessier-Lavigne M (August 1997). "Neuropilin is a receptor for the axonal chemorepellent Semaphorin III". Cell. 90 (4): 739–51. doi:10.1016/S0092-8674(00)80534-6. PMID9288753.
Giger RJ, Urquhart ER, Gillespie SK, Levengood DV, Ginty DD, Kolodkin AL (November 1998). "Neuropilin-2 is a receptor for semaphorin IV: insight into the structural basis of receptor function and specificity". Neuron. 21 (5): 1079–92. doi:10.1016/S0896-6273(00)80625-X. PMID9856463.
Chen H, He Z, Bagri A, Tessier-Lavigne M (December 1998). "Semaphorin-neuropilin interactions underlying sympathetic axon responses to class III semaphorins". Neuron. 21 (6): 1283–90. doi:10.1016/S0896-6273(00)80648-0. PMID9883722.
Takahashi T, Nakamura F, Jin Z, Kalb RG, Strittmatter SM (October 1998). "Semaphorins A and E act as antagonists of neuropilin-1 and agonists of neuropilin-2 receptors". Nature Neuroscience. 1 (6): 487–93. doi:10.1038/2203. PMID10196546.
Rossignol M, Beggs AH, Pierce EA, Klagsbrun M (May 1999). "Human neuropilin-1 and neuropilin-2 map to 10p12 and 2q34, respectively". Genomics. 57 (3): 459–60. doi:10.1006/geno.1999.5790. PMID10329017.
Makinen T, Olofsson B, Karpanen T, Hellman U, Soker S, Klagsbrun M, Eriksson U, Alitalo K (July 1999). "Differential binding of vascular endothelial growth factor B splice and proteolytic isoforms to neuropilin-1". The Journal of Biological Chemistry. 274 (30): 21217–22. doi:10.1074/jbc.274.30.21217. PMID10409677.
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