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Rising Cellular Immune Response after Injection of pVax/iutA: A Genetic DNA Cassette as Candidate Vaccine against Urinary Tract Infection

BACKGROUND: Uropathogenic Escherichia coli (UPEC) are major bacterial agent of Urinary Tract Infection (UTI). This infection is more prevalent among women because approximately half of all women will experience a UTI in their life-time and near a quarter of them will have a recurrent infection withi...

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Autores principales: BAKHTIARI, Ronak, AHMADIAN, Shahin, FALLAH MEHRABADI, Jalil
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Tehran University of Medical Sciences 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4980343/
https://www.ncbi.nlm.nih.gov/pubmed/27516995
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author BAKHTIARI, Ronak
AHMADIAN, Shahin
FALLAH MEHRABADI, Jalil
author_facet BAKHTIARI, Ronak
AHMADIAN, Shahin
FALLAH MEHRABADI, Jalil
author_sort BAKHTIARI, Ronak
collection PubMed
description BACKGROUND: Uropathogenic Escherichia coli (UPEC) are major bacterial agent of Urinary Tract Infection (UTI). This infection is more prevalent among women because approximately half of all women will experience a UTI in their life-time and near a quarter of them will have a recurrent infection within 6–12 months. IutA protein has a major role during UPEC pathogenesis and consequently infection. Therefore, the aim of current study was assessment of IutA protein roles as a potential candidate antigen based for vaccine designing. METHODS: This survey was conducted during 2014–2015 at the University of Tehran, Iran. Chromosomal DNA extracted from E. coli 35218 and iutA gene amplified by PCR. The amplicon cloned to pVax.1 eukaryotic expression vector and recombinant vector confirmed by sequencing. The iutA gene expression in genetic cassette of pVax/iutA was evaluated in COS7 cell line by RT-PCR. Then, injected to mouse model, which divided to three groups: injected with pVax vector, PBS and pVax/iutA cassette respectively in two stages (d 1 and 14). One week after the second injection, bleeding from immunized mouse was performed and IFN-gamma was measured. RESULTS: The mice immunized with pVax/iutA showed increased interferon-γ responses significantly higher than two non-immunized groups (P<0.05). CONCLUSION: Cellular immune response has a main protective role against UTI. Raising this kind of immune response is important to preventing of recurrent infection. Moreover, the current DNA cassette will be valuable for more trying to prepare a new vaccine against UTI.
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spelling pubmed-49803432016-08-11 Rising Cellular Immune Response after Injection of pVax/iutA: A Genetic DNA Cassette as Candidate Vaccine against Urinary Tract Infection BAKHTIARI, Ronak AHMADIAN, Shahin FALLAH MEHRABADI, Jalil Iran J Public Health Original Article BACKGROUND: Uropathogenic Escherichia coli (UPEC) are major bacterial agent of Urinary Tract Infection (UTI). This infection is more prevalent among women because approximately half of all women will experience a UTI in their life-time and near a quarter of them will have a recurrent infection within 6–12 months. IutA protein has a major role during UPEC pathogenesis and consequently infection. Therefore, the aim of current study was assessment of IutA protein roles as a potential candidate antigen based for vaccine designing. METHODS: This survey was conducted during 2014–2015 at the University of Tehran, Iran. Chromosomal DNA extracted from E. coli 35218 and iutA gene amplified by PCR. The amplicon cloned to pVax.1 eukaryotic expression vector and recombinant vector confirmed by sequencing. The iutA gene expression in genetic cassette of pVax/iutA was evaluated in COS7 cell line by RT-PCR. Then, injected to mouse model, which divided to three groups: injected with pVax vector, PBS and pVax/iutA cassette respectively in two stages (d 1 and 14). One week after the second injection, bleeding from immunized mouse was performed and IFN-gamma was measured. RESULTS: The mice immunized with pVax/iutA showed increased interferon-γ responses significantly higher than two non-immunized groups (P<0.05). CONCLUSION: Cellular immune response has a main protective role against UTI. Raising this kind of immune response is important to preventing of recurrent infection. Moreover, the current DNA cassette will be valuable for more trying to prepare a new vaccine against UTI. Tehran University of Medical Sciences 2016-07 /pmc/articles/PMC4980343/ /pubmed/27516995 Text en Copyright© Iranian Public Health Association & Tehran University of Medical Sciences This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License which allows users to read, copy, distribute and make derivative works for non-commercial purposes from the material, as long as the author of the original work is cited properly.
spellingShingle Original Article
BAKHTIARI, Ronak
AHMADIAN, Shahin
FALLAH MEHRABADI, Jalil
Rising Cellular Immune Response after Injection of pVax/iutA: A Genetic DNA Cassette as Candidate Vaccine against Urinary Tract Infection
title Rising Cellular Immune Response after Injection of pVax/iutA: A Genetic DNA Cassette as Candidate Vaccine against Urinary Tract Infection
title_full Rising Cellular Immune Response after Injection of pVax/iutA: A Genetic DNA Cassette as Candidate Vaccine against Urinary Tract Infection
title_fullStr Rising Cellular Immune Response after Injection of pVax/iutA: A Genetic DNA Cassette as Candidate Vaccine against Urinary Tract Infection
title_full_unstemmed Rising Cellular Immune Response after Injection of pVax/iutA: A Genetic DNA Cassette as Candidate Vaccine against Urinary Tract Infection
title_short Rising Cellular Immune Response after Injection of pVax/iutA: A Genetic DNA Cassette as Candidate Vaccine against Urinary Tract Infection
title_sort rising cellular immune response after injection of pvax/iuta: a genetic dna cassette as candidate vaccine against urinary tract infection
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4980343/
https://www.ncbi.nlm.nih.gov/pubmed/27516995
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