Activation of Sendai Virus Infectivity by an Enzyme in Chicken Amniotic Fluid
نویسندگان
چکیده
منابع مشابه
Activation of Sendai virus infectivity by an enzyme in chicken amniotic fluid.
Sendai virus grown in LLC-MK2 cells is known to have low infectivity, no detectable haemolysing ability and predominantly uncleaved F glycoprotein. Treatment of such virus with chicken amniotic fluid resulted in a 10(3)- to 10(4)-fold increase in infectivity, the development of haemolysing ability, and cleavage of the F glycoprotein. The 'Sendai activating enzyme' (SAE) responsible for these ef...
متن کاملTrypsin action on the growth of Sendai virus in tissue culture cells. V. An activating enzyme for Sendai virus in the chorioallantoic fluid of the embryonated chicken egg.
A trypsin-like protease which is responsible for activation of Sendai virus was found in the chorioallantoic fluid (CAF) of embryonated chicken eggs. Treatment of the inactive form of Sendai virus, grown in LLC-MK2 cells, with CAF enhanced both hemolytic activity and infectivity for the cells. Soybean trypsin inhibitor restrained the enhancing activity of CAF. These results indicate that CAF co...
متن کاملThe Comparison of Maternal Endometritis in Meconium – Stained Amniotic Fluid and Clear Amniotic Fluid
Introduction: Metritis is one of the causes of maternal morbidity and there are many risk factors for it. Because of the importance of possible association of meconium-stained amniotic fluid and maternal metritis the present study was done to determine whether meconium stained amniotic fluid (MSAF) is associated with puerperal infection. Methods: In this case-control study 150 women with MSAF a...
متن کاملHigh level expression of soluble glycoproteins in the allantoic fluid of embryonated chicken eggs using a Sendai virus minigenome system
BACKGROUND Embryonated chicken eggs have been used since the mid-20th century to grow a wide range of animal viruses to high titers. However, eggs have found so far only limited use in the production of recombinant proteins. We now describe a system, based on a Sendai virus minigenome, to produce large amounts of heterologous viral glycoproteins in the allantoic cavity of embryonated eggs. RE...
متن کاملRole of Ca++ in virus-induced membrane fusion. Ca++ accumulation and ultrastructural changes induced by Sendai virus in chicken erythrocytes
Some of the ultrastructural (freeze-etching technique), morphological, and biochemical effects of Sendai virus interaction with chicken erythrocytes have been studied under fusogenic (in the presence of CaCl2) and nonfusogenic (in the presence of ethyleneglycol-bis-N,N'-tetraacetic acid, [EGTA]) conditions. The following phenomena occur, irrespective of the presence of CaCl2 or EGTA: (a) bindin...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of General Virology
سال: 1983
ISSN: 0022-1317,1465-2099
DOI: 10.1099/0022-1317-64-4-813