Specificity and affinity of binding of herpes simplex virus type 2 glycoprotein B to glycosaminoglycans.
نویسندگان
چکیده
Herpes simplex virus type 2 (HSV-2) interacts with cell surface glycosaminoglycans during virus attachment. Glycoprotein B of HSV-2 can potentially mediate the interaction between the virion and cell surface glycosaminoglycans. To determine the specificity, kinetics, and affinity of these interactions, we used plasmon resonance-based biosensor technology to measure HSV-2 glycoprotein binding to glycosaminoglycans in real time. The recombinant soluble ectodomain of HSV-2 gB (gB2) but not the soluble ectodomain of HSV-2 gD bound readily to biosensor surfaces coated with heparin. The affinity constants (Kds) were determined for gB2 (Kd = 7.7 x 10(-7) M) and for gB2 deltaTM (Kd = 9.9 x 10(-7) M), a recombinant soluble form of HSV-2 gB in which only its transmembrane domain has been deleted. gB2 binding to the heparin surface was competitively inhibited by low concentrations of heparin (50% effective dose [ED50] = 0.08 microg/ml). Heparan sulfate and dermatan sulfate glycosaminoglycans have each been suggested as cell surface receptors for HSV. Our biosensor analyses showed that both heparan sulfate and dermatan sulfate inhibited gB2 binding (ED50 = 1 to 5 microg/ml), indicating that gB2 interacts with both heparin-like and dermatan sulfate glycosaminoglycans. Chondroitin sulfate A, in contrast, inhibited gB2 binding to heparin only at high levels (ED50 = 65 microg/ml). The affinity and specificity of gB2 binding to glycosaminoglycans demonstrated in these studies support its role in the initial binding of HSV-2 to cells bearing heparan sulfate or dermatan sulfate glycosaminoglycans.
منابع مشابه
Immunogenicity and Efficacy of Baculovirus Derived Glycoprotein D of Herpes Simplex Virus Type-I in Mice
متن کامل
Construction of an Eukaryotic Expression Vector Encoding Herpes Simplex Virus Type 2 Glycoprotein D and In Vitro Expression of the Desired Protein
To construct of an eukaryotic expression vector encoding herpes simplex virus type 2 (HSV-2) glycoprotein D (gD2), an Iranian isolate of HSV-2 was propagated in HeLa cell line and its DNA was extracted and used as template in polymerase chain reactions (PCR), to amplify gD2 gene. Primers were designed and the restriction enzyme sites for EcoRI and XhoI were considered at their 5′ ends respectiv...
متن کاملExpression of the Herpes Simplex Virus Type 2 Glycoprotein D in Baculovirus Expression System and Evaluation of Its Immunogenicity in Guinea Pigs
Background: Herpes simplex virus type 2 (HSV-2) is highly prevalent and major cause of genital herpes in humans. The life-long nature of infection and the increasing prevalence of genital herpes imply that vaccination is the best strategy for controlling the spread of infection and limiting HSV disease. HSV glycoprotein D (gD) is one of the most important viral immunogen which has an essential ...
متن کاملLoop-Mediated Isothermal Amplification (LAMP) for the Rapid Diagnosis of Herpes Simplex Virus Type 1 (HSV-1)
Background and Aims: considering difficulties in usual laboratory methods in detection of viral infections, improved DNA-based diagnostic techniques are more reliable. Loop mediated isothermal amplification method (LAMP) is a nucleic acid amplification method that amplifies DNA using six primers which has been developed to diagnose viruses as a rapid and high efficiency test. In this study, the...
متن کاملDetection of Herpes Simplex Virus Antibodies Using the Whole Virus and Recombinant gD
Background and Aims: Herpes simplex virus type 1 (HSV1) remains a potentially serious health problem world wide. All infected people, including asymptomatic ones, are potential sources for virus transmission. Virus envelope contains at least 13 glycoproteins, which glycoprotein D is the major target of immune responses. The aim of this study was development of a specific method that is a more...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Journal of virology
دوره 71 2 شماره
صفحات -
تاریخ انتشار 1997