Active and passive immunizations with HtsA, a streptococcal heme transporter protein, protect mice from subcutaneous group A Streptococcus infection
Background/Purpose: HtsA (Streptococcus heme transporter A) is the lipoprotein component of the streptococcal heme ABC transporter (HtsABC). The aim of this study is to investigate whether the HtsA protein has immunoprotective effect against group A Streptococcus (GAS) infection in mice. Methods: Th...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-02-01
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| Series: | Journal of Microbiology, Immunology and Infection |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1684118218301075 |
| _version_ | 1818031053821968384 |
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| author | Yingli Song XiaoLan Zhang Minghui Cai Chunmei Lv Yuan Zhao Deqin Wei Hui Zhu |
| author_facet | Yingli Song XiaoLan Zhang Minghui Cai Chunmei Lv Yuan Zhao Deqin Wei Hui Zhu |
| author_sort | Yingli Song |
| collection | DOAJ |
| description | Background/Purpose: HtsA (Streptococcus heme transporter A) is the lipoprotein component of the streptococcal heme ABC transporter (HtsABC). The aim of this study is to investigate whether the HtsA protein has immunoprotective effect against group A Streptococcus (GAS) infection in mice. Methods: The HtsA protein was purified by sequential chromatography on Ni-sepharose, DEAE-sepharose and Phenyl-sepharose, CD-1 mice were actively immunized with ALUM (control) or HtsA/ALUM, and passively immunized with control or anti-HtsA serum. Mice were challenged with GAS after immunization, and the survival rate, skin lesion size and systemic GAS dissemination were determined. Results: The HtsA gene was cloned, and the recombinant protein HtsA was successfully purified. HtsA has a strong antigenicity, and active immunization with the HtsA protein significantly protected mice against lethal subcutaneous GAS infection, inhibited invasion of the skin by GAS, and reduced GAS systemic dissemination in blood and organs. In addition, passive immunization with anti-HtsA serum also significantly protected mice against subcutaneous GAS infection, and inhibited invasion of the skin by GAS. Conclusion: The results showed that both active and passive immunization with the HtsA protein protected mice against subcutaneous GAS infection, suggesting that HtsA may be a candidate of GAS vaccine to protect against GAS infection. Keywords: Immunization, HtsA protein, Group A Streptococcus infection |
| first_indexed | 2024-12-10T05:45:22Z |
| format | Article |
| id | doaj.art-589d14dcf6e04223a7ef25247bd8ca37 |
| institution | Directory Open Access Journal |
| issn | 1684-1182 |
| language | English |
| last_indexed | 2024-12-10T05:45:22Z |
| publishDate | 2020-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Microbiology, Immunology and Infection |
| spelling | doaj.art-589d14dcf6e04223a7ef25247bd8ca372022-12-22T02:00:10ZengElsevierJournal of Microbiology, Immunology and Infection1684-11822020-02-015318793Active and passive immunizations with HtsA, a streptococcal heme transporter protein, protect mice from subcutaneous group A Streptococcus infectionYingli Song0XiaoLan Zhang1Minghui Cai2Chunmei Lv3Yuan Zhao4Deqin Wei5Hui Zhu6Department of Physiology, College of Basic Medical Science, Harbin Medical University, ChinaDepartment of Physiology, College of Basic Medical Science, Harbin Medical University, ChinaDepartment of Physiology, College of Basic Medical Science, Harbin Medical University, ChinaDepartment of Physiology, College of Basic Medical Science, Harbin Medical University, ChinaDepartment of Physiology, College of Basic Medical Science, Harbin Medical University, ChinaDepartment of Physiology, College of Basic Medical Science, Harbin Medical University, ChinaCorresponding author. No. 157 Baojian Road, Harbin, 150081, China.; Department of Physiology, College of Basic Medical Science, Harbin Medical University, ChinaBackground/Purpose: HtsA (Streptococcus heme transporter A) is the lipoprotein component of the streptococcal heme ABC transporter (HtsABC). The aim of this study is to investigate whether the HtsA protein has immunoprotective effect against group A Streptococcus (GAS) infection in mice. Methods: The HtsA protein was purified by sequential chromatography on Ni-sepharose, DEAE-sepharose and Phenyl-sepharose, CD-1 mice were actively immunized with ALUM (control) or HtsA/ALUM, and passively immunized with control or anti-HtsA serum. Mice were challenged with GAS after immunization, and the survival rate, skin lesion size and systemic GAS dissemination were determined. Results: The HtsA gene was cloned, and the recombinant protein HtsA was successfully purified. HtsA has a strong antigenicity, and active immunization with the HtsA protein significantly protected mice against lethal subcutaneous GAS infection, inhibited invasion of the skin by GAS, and reduced GAS systemic dissemination in blood and organs. In addition, passive immunization with anti-HtsA serum also significantly protected mice against subcutaneous GAS infection, and inhibited invasion of the skin by GAS. Conclusion: The results showed that both active and passive immunization with the HtsA protein protected mice against subcutaneous GAS infection, suggesting that HtsA may be a candidate of GAS vaccine to protect against GAS infection. Keywords: Immunization, HtsA protein, Group A Streptococcus infectionhttp://www.sciencedirect.com/science/article/pii/S1684118218301075 |
| spellingShingle | Yingli Song XiaoLan Zhang Minghui Cai Chunmei Lv Yuan Zhao Deqin Wei Hui Zhu Active and passive immunizations with HtsA, a streptococcal heme transporter protein, protect mice from subcutaneous group A Streptococcus infection Journal of Microbiology, Immunology and Infection |
| title | Active and passive immunizations with HtsA, a streptococcal heme transporter protein, protect mice from subcutaneous group A Streptococcus infection |
| title_full | Active and passive immunizations with HtsA, a streptococcal heme transporter protein, protect mice from subcutaneous group A Streptococcus infection |
| title_fullStr | Active and passive immunizations with HtsA, a streptococcal heme transporter protein, protect mice from subcutaneous group A Streptococcus infection |
| title_full_unstemmed | Active and passive immunizations with HtsA, a streptococcal heme transporter protein, protect mice from subcutaneous group A Streptococcus infection |
| title_short | Active and passive immunizations with HtsA, a streptococcal heme transporter protein, protect mice from subcutaneous group A Streptococcus infection |
| title_sort | active and passive immunizations with htsa a streptococcal heme transporter protein protect mice from subcutaneous group a streptococcus infection |
| url | http://www.sciencedirect.com/science/article/pii/S1684118218301075 |
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