Successful cross-protective efficacy induced by heat-adapted live attenuated nephropathogenic infectious bronchitis virus derived from a natural recombinant strain

Abstract A natural recombinant nephropathogenic K40/09 strain of infectious bronchitis virus (IBV) was heat-adapted for possible future use as live attenuated vaccine. The K40/09 strain was selected during successive serial passages in specific-pathogen free (SPF) embryonated eggs at sub-optimal hig...

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Veröffentlicht in:Vaccine 2015-12, Vol.33 (51), p.7370-7374
Hauptverfasser: Lim, Tae-Hyun, Youn, Ha-Na, Yuk, Seong-Su, Kwon, Jung-Hoon, Hong, Woo-Tack, Gwon, Gyeong-Bin, Lee, Jung-Ah, Lee, Joong-Bok, Lee, Sang-Won, Song, Chang-Seon
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container_end_page 7374
container_issue 51
container_start_page 7370
container_title Vaccine
container_volume 33
creator Lim, Tae-Hyun
Youn, Ha-Na
Yuk, Seong-Su
Kwon, Jung-Hoon
Hong, Woo-Tack
Gwon, Gyeong-Bin
Lee, Jung-Ah
Lee, Joong-Bok
Lee, Sang-Won
Song, Chang-Seon
description Abstract A natural recombinant nephropathogenic K40/09 strain of infectious bronchitis virus (IBV) was heat-adapted for possible future use as live attenuated vaccine. The K40/09 strain was selected during successive serial passages in specific-pathogen free (SPF) embryonated eggs at sub-optimal higher temperature (56 °C). Unlike the parental strain, the attenuated strain, designated K40/09 HP50, was found to be safe in 1-day-old SPF chicks, which showed neither mortality nor signs of morbidity, and rarely induced ciliostasis or histological changes in the trachea and kidney after intraocular and fine-spray administration. K40/09 HP50 provided almost complete protection against two distinct subgroups of a nephropathogenic strain (KM91-like and QX-like subgroup) and elicited the production of high titers of neutralizing antibody (neutralization index of 3.6). We conclude that the K40/09 HP50 vaccine virus is rapidly attenuated by heat adaptation and exhibits the desired level of attenuation, immunogenicity, and protective efficacy required for a live attenuated vaccine. These results indicate that the K40/09 vaccine could be helpful for the reduction of economic losses caused by recently emergent nephropathogenic IBV infection in many countries.
doi_str_mv 10.1016/j.vaccine.2015.07.043
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The K40/09 strain was selected during successive serial passages in specific-pathogen free (SPF) embryonated eggs at sub-optimal higher temperature (56 °C). Unlike the parental strain, the attenuated strain, designated K40/09 HP50, was found to be safe in 1-day-old SPF chicks, which showed neither mortality nor signs of morbidity, and rarely induced ciliostasis or histological changes in the trachea and kidney after intraocular and fine-spray administration. K40/09 HP50 provided almost complete protection against two distinct subgroups of a nephropathogenic strain (KM91-like and QX-like subgroup) and elicited the production of high titers of neutralizing antibody (neutralization index of 3.6). We conclude that the K40/09 HP50 vaccine virus is rapidly attenuated by heat adaptation and exhibits the desired level of attenuation, immunogenicity, and protective efficacy required for a live attenuated vaccine. 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All rights reserved.</rights><rights>Copyright Elsevier Limited Dec 16, 2015</rights><rights>Copyright © 2015 Elsevier Ltd. All rights reserved. 2015 Elsevier Ltd</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c653t-3385420f7f5b87707c3e11c69e98381d31be861b4e6a07aecc75bffc0fb715423</citedby><cites>FETCH-LOGICAL-c653t-3385420f7f5b87707c3e11c69e98381d31be861b4e6a07aecc75bffc0fb715423</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.proquest.com/docview/1746587045?pq-origsite=primo$$EHTML$$P50$$Gproquest$$H</linktohtml><link.rule.ids>230,314,780,784,885,3550,27924,27925,45995,64385,64387,64389,72469</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/26218899$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Lim, Tae-Hyun</creatorcontrib><creatorcontrib>Youn, Ha-Na</creatorcontrib><creatorcontrib>Yuk, Seong-Su</creatorcontrib><creatorcontrib>Kwon, Jung-Hoon</creatorcontrib><creatorcontrib>Hong, Woo-Tack</creatorcontrib><creatorcontrib>Gwon, Gyeong-Bin</creatorcontrib><creatorcontrib>Lee, Jung-Ah</creatorcontrib><creatorcontrib>Lee, Joong-Bok</creatorcontrib><creatorcontrib>Lee, Sang-Won</creatorcontrib><creatorcontrib>Song, Chang-Seon</creatorcontrib><title>Successful cross-protective efficacy induced by heat-adapted live attenuated nephropathogenic infectious bronchitis virus derived from a natural recombinant strain</title><title>Vaccine</title><addtitle>Vaccine</addtitle><description>Abstract A natural recombinant nephropathogenic K40/09 strain of infectious bronchitis virus (IBV) was heat-adapted for possible future use as live attenuated vaccine. The K40/09 strain was selected during successive serial passages in specific-pathogen free (SPF) embryonated eggs at sub-optimal higher temperature (56 °C). Unlike the parental strain, the attenuated strain, designated K40/09 HP50, was found to be safe in 1-day-old SPF chicks, which showed neither mortality nor signs of morbidity, and rarely induced ciliostasis or histological changes in the trachea and kidney after intraocular and fine-spray administration. K40/09 HP50 provided almost complete protection against two distinct subgroups of a nephropathogenic strain (KM91-like and QX-like subgroup) and elicited the production of high titers of neutralizing antibody (neutralization index of 3.6). We conclude that the K40/09 HP50 vaccine virus is rapidly attenuated by heat adaptation and exhibits the desired level of attenuation, immunogenicity, and protective efficacy required for a live attenuated vaccine. These results indicate that the K40/09 vaccine could be helpful for the reduction of economic losses caused by recently emergent nephropathogenic IBV infection in many countries.</description><subject>Adaptation, Biological</subject><subject>Allergy and Immunology</subject><subject>Animal diseases</subject><subject>Animal vaccines</subject><subject>Animals</subject><subject>Attenuation</subject><subject>Chickens</subject><subject>Coronavirus Infections - prevention &amp; control</subject><subject>Coronavirus Infections - veterinary</subject><subject>Cross-protective efficacy</subject><subject>Disease control</subject><subject>Heat adaptation</subject><subject>High temperature</subject><subject>Hot Temperature</subject><subject>Immunization</subject><subject>Immunogenicity</subject><subject>Infectious bronchitis virus</subject><subject>Infectious bronchitis virus - immunology</subject><subject>Infectious bronchitis virus - isolation &amp; purification</subject><subject>Kidney - pathology</subject><subject>Kidneys</subject><subject>Laboratory animals</subject><subject>Neutralization</subject><subject>Poultry</subject><subject>Poultry Diseases - immunology</subject><subject>Poultry Diseases - prevention &amp; 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identifier ISSN: 0264-410X
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language eng
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source MEDLINE; Elsevier ScienceDirect Journals Complete; ProQuest Central
subjects Adaptation, Biological
Allergy and Immunology
Animal diseases
Animal vaccines
Animals
Attenuation
Chickens
Coronavirus Infections - prevention & control
Coronavirus Infections - veterinary
Cross-protective efficacy
Disease control
Heat adaptation
High temperature
Hot Temperature
Immunization
Immunogenicity
Infectious bronchitis virus
Infectious bronchitis virus - immunology
Infectious bronchitis virus - isolation & purification
Kidney - pathology
Kidneys
Laboratory animals
Neutralization
Poultry
Poultry Diseases - immunology
Poultry Diseases - prevention & control
RNA polymerase
Safety
Serial Passage
Studies
Survival Analysis
Trachea - pathology
Vaccines
Vaccines, Attenuated - administration & dosage
Vaccines, Attenuated - adverse effects
Vaccines, Attenuated - immunology
Vaccines, Attenuated - isolation & purification
Viral Vaccines - administration & dosage
Viral Vaccines - adverse effects
Viral Vaccines - immunology
Viral Vaccines - isolation & purification
Viruses
title Successful cross-protective efficacy induced by heat-adapted live attenuated nephropathogenic infectious bronchitis virus derived from a natural recombinant strain
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