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Cultured fibroblasts of the Okinawa rail present delayed innate immune response compared to that of chicken

The Okinawa rail is endemic to Okinawa Island and is categorized as an endangered animal. In this study, we focused on innate immunity because it is the first line of host defense. In particular, signals recognizing foreign RNA (e.g., viruses) are important for host defense because they activate the...

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Autores principales: Katayama, Masafumi, Fukuda, Tomokazu, Kato, Noriko, Nagamine, Takashi, Nakaya, Yumiko, Nakajima, Nobuyoshi, Onuma, Manabu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10443837/
https://www.ncbi.nlm.nih.gov/pubmed/37607189
http://dx.doi.org/10.1371/journal.pone.0290436
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author Katayama, Masafumi
Fukuda, Tomokazu
Kato, Noriko
Nagamine, Takashi
Nakaya, Yumiko
Nakajima, Nobuyoshi
Onuma, Manabu
author_facet Katayama, Masafumi
Fukuda, Tomokazu
Kato, Noriko
Nagamine, Takashi
Nakaya, Yumiko
Nakajima, Nobuyoshi
Onuma, Manabu
author_sort Katayama, Masafumi
collection PubMed
description The Okinawa rail is endemic to Okinawa Island and is categorized as an endangered animal. In this study, we focused on innate immunity because it is the first line of host defense. In particular, signals recognizing foreign RNA (e.g., viruses) are important for host defense because they activate the host immune system. The retinoic acid-inducible gene I (RIG-I)-like receptor (RLR) families (RIG-I, MDA5, and LGP2) are sensors that activate innate immunity. Therefore, we analyzed these functions in the Okinawa rail using genomic and cellular analyses of fibroblasts. Fibroblasts can be obtained from dead individuals, allowing these cells to be obtained from dead individuals, which is particularly useful for endangered species. The MDA5 gene of Okinawa rail was sequenced using the Sanger method following PCR amplification and extraction of the amplified sequence from agarose gel. Additionally, mRNA expression analysis of cultured fibroblasts exposed to poly I:C was done. The MDA5 gene was found to be a mutated nonfunctional gene in the Okinawa rail. The mRNA expression rates of inflammatory cytokine genes type I IFN, and Mx1 were slower in Okinawa rail than in chicken cultured fibroblasts. Similar to the mRNA expression results, cell number and live cell ratio also slowly decreased in the Okinawa rail compared with chicken cultured fibroblasts, indicating that the innate immune reaction differs between chicken and the Okinawa rail. To the best of our knowledge, this is the first experimental evaluation of the loss of function of the Okinawa rail innate immune genes. In conclusion, our results provide a basis for conservation strategies for the endangered Okinawa rail.
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spelling pubmed-104438372023-08-23 Cultured fibroblasts of the Okinawa rail present delayed innate immune response compared to that of chicken Katayama, Masafumi Fukuda, Tomokazu Kato, Noriko Nagamine, Takashi Nakaya, Yumiko Nakajima, Nobuyoshi Onuma, Manabu PLoS One Research Article The Okinawa rail is endemic to Okinawa Island and is categorized as an endangered animal. In this study, we focused on innate immunity because it is the first line of host defense. In particular, signals recognizing foreign RNA (e.g., viruses) are important for host defense because they activate the host immune system. The retinoic acid-inducible gene I (RIG-I)-like receptor (RLR) families (RIG-I, MDA5, and LGP2) are sensors that activate innate immunity. Therefore, we analyzed these functions in the Okinawa rail using genomic and cellular analyses of fibroblasts. Fibroblasts can be obtained from dead individuals, allowing these cells to be obtained from dead individuals, which is particularly useful for endangered species. The MDA5 gene of Okinawa rail was sequenced using the Sanger method following PCR amplification and extraction of the amplified sequence from agarose gel. Additionally, mRNA expression analysis of cultured fibroblasts exposed to poly I:C was done. The MDA5 gene was found to be a mutated nonfunctional gene in the Okinawa rail. The mRNA expression rates of inflammatory cytokine genes type I IFN, and Mx1 were slower in Okinawa rail than in chicken cultured fibroblasts. Similar to the mRNA expression results, cell number and live cell ratio also slowly decreased in the Okinawa rail compared with chicken cultured fibroblasts, indicating that the innate immune reaction differs between chicken and the Okinawa rail. To the best of our knowledge, this is the first experimental evaluation of the loss of function of the Okinawa rail innate immune genes. In conclusion, our results provide a basis for conservation strategies for the endangered Okinawa rail. Public Library of Science 2023-08-22 /pmc/articles/PMC10443837/ /pubmed/37607189 http://dx.doi.org/10.1371/journal.pone.0290436 Text en © 2023 Katayama et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Katayama, Masafumi
Fukuda, Tomokazu
Kato, Noriko
Nagamine, Takashi
Nakaya, Yumiko
Nakajima, Nobuyoshi
Onuma, Manabu
Cultured fibroblasts of the Okinawa rail present delayed innate immune response compared to that of chicken
title Cultured fibroblasts of the Okinawa rail present delayed innate immune response compared to that of chicken
title_full Cultured fibroblasts of the Okinawa rail present delayed innate immune response compared to that of chicken
title_fullStr Cultured fibroblasts of the Okinawa rail present delayed innate immune response compared to that of chicken
title_full_unstemmed Cultured fibroblasts of the Okinawa rail present delayed innate immune response compared to that of chicken
title_short Cultured fibroblasts of the Okinawa rail present delayed innate immune response compared to that of chicken
title_sort cultured fibroblasts of the okinawa rail present delayed innate immune response compared to that of chicken
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10443837/
https://www.ncbi.nlm.nih.gov/pubmed/37607189
http://dx.doi.org/10.1371/journal.pone.0290436
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