α-defensin 1

β-Defensin-1 is a peptide with antimicrobial properties that protects the skin and mucosal membranes of the respiratory, genitourinary, and gastrointestinal tracts.1It inhibits the growth ofB. adolescentis,L. acidophilus,B. breve,B. vulgatus,L. fermentum,B. longum, andS. thermophilusin an antimicrobial radial diffusion assay.2β-Defensin-1 also inhibits the growth of periodontopathogenic and cariogenic bacteria, includingP. gingivalisandS. salivarius, and of susceptibleM. tuberculosisH37Rv but not of resistantM. tuberculosisRM22 when used at a concentration of 128 μg/ml.3,4It blocks human and mouse Kv1.3 voltage-gated potassium channels (IC50s = 11.8 and 13.2 μM, respectively).5Overexpression of β-defensin-1 in the human oral squamous cell carcinoma (OSCC) cell lines HSC-3, UM-1, and SCC-9 increases migration and invasion but not proliferation.6 1.Lehrer, R.I.Primate defensinsNat. Rev. Microbiol.2(9)727-738(2004) 2.Schroeder, B.O., Ehmann, D., Precht, J.C., et al.Paneth cell α-defensin 6 (HD-6) is an antimicrobial peptideMucosal Immunol.8(3)661-671(2015) 3.Ouhara, K., Komatsuzawa, H., Yamada, S., et al.Susceptibilities of periodontopathogenic and cariogenic bacteria to antibacterial peptides, β-defensins and LL37, produced by human epithelial cellsJ. Antimicrob. Chemother.55(6)888-896(2005) 4.Fattorini, L., Gennaro, R., Zanetti, M., et al.In vitro activity of protegrin-1 and beta-defensin-1, alone and in combination with isoniazid, against Mycobacterium tuberculosisPeptides25(7)1075-1077(2004) 5.Feng, J., Xie, Z., Yang, W., et al.Human beta-defensin 1, a new animal toxin-like blocker of potassium channelToxicon113(2016) 6.Han, Q., Wang, R., Sun, C., et al.Human beta-defensin-1 suppresses tumor migration and invasion and is an independent predictor for survival of oral squamous cell carcinoma patientsPLoS One9(3)e91867(2014)

Beta-defensin 1, pig TFA 是一种在猪舌黏膜中主要发现的抗菌肽，对多种细菌如大肠杆菌、鼠伤寒沙门氏菌、单核细胞增生性李斯特菌、金黄色葡萄球菌、百日咳博德特氏菌和白色念珠菌等显示出抗菌活性。

Beta-defensin 103 isoform X1, pig 是一种抗菌肽、在多种生物体内被发现，参与了先天性免疫防线。

Human β-defensin-1 (HβD-1) is a cysteine-rich cationic skin-antimicrobial peptide (SAP) produced by epithelial surfaces, circulatory cells, and cells of the reproductive tract. It exhibits antimicrobial activity against a wide range of sperm bacteria.

Beta-defensin 103 isoform X1, pig TFA 是一种抗菌肽、在多种生物体内被发现，参与了先天性免疫防线。

Beta-defensin 1, pig 是一种在猪舌黏膜中主要发现的抗菌肽，对包括大肠杆菌、鼠伤寒沙门氏菌、单核细胞增生性李斯特菌、金黄色葡萄球菌、百日咳博德特氏菌和白色念珠菌在内的多种细菌显示出活性。

Defensin HNP-1 human TFA，一种人中性粒细胞肽(HNPs)，在早期动脉粥样硬化发展中涉及内皮细胞功能障碍。该化合物展现出广泛的抗菌及抗利什曼原虫活性。

Defensin HNP-1 human is a Human neutrophil peptides (HNPs), involved in endothelial cell dysfunction at the time of early atherosclerotic development.Defensin HNP-1 human can regulate the growth of atherosclerosis.

Bovine neutrophil beta-defensin 12，一种牛中性粒细胞来源的抗菌肽，展现针对大肠杆菌(Escherichia coli)和金黄色葡萄球菌(Staphylococcus aureus)的抗菌活性。

Human α-defensin 5 是抗病毒肽，能够阻断多种无包膜病毒感染，如AdV、HPV以及多瘤病毒（IC50: HPV16为0.6-1.25 μM）。它通过与病毒衣壳结合来阻止病毒从内体逃逸，并能增强HIV与细胞表面的结合作用。此外，Human α-defensin 5 还具备对抗寄生虫的活性。

Human α-Defensin 6，含32个半胱氨酸残基的抗菌肽，能够阻止细菌入侵，促进粘膜免疫。该肽通过自组装形成有序的原纤维和纳米网，能随机结合细菌表面蛋白，进而围绕并缠绕细菌。此外，Human α-Defensin 6抑制C. albicans生物膜的形成。

ROAD-1是一种α-防御素，源于恒河猴口腔粘膜。该化合物展现出对金黄色葡萄球菌、大肠杆菌和白色念珠菌的抗菌活性。