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Zhang Y, Wang X, Li Z, Zhang J, Wang Y, Wu C, Chen C, Li J, Zhang H. Brucella melitensis outer membrane protein 25 interacts with ferritin heavy polypeptide 1 in human trophoblast cells. Mol Med Rep 2022; 26:224. [PMID: 35593274 DOI: 10.3892/mmr.2022.12740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Accepted: 02/04/2021] [Indexed: 11/06/2022] Open
Abstract
Outer membrane protein 25 (OMP25) is involved in Brucella virulence and serves an important role in Brucella pathogenesis during infection. However, the protein interacting with OMP25 in host cells remains to be elucidated. The present study constructed a cDNA library from Brucella melitensis 16M‑infected human placenta trophoblastic cells (HPT‑8) and identified and confirmed the interaction between Brucella OMP25 and ferritin heavy polypeptide 1 (FTH1) of HPT‑8 using yeast two‑hybrid and co‑immunoprecipitation technologies. The expression of Toll‑like receptor (TLR)4, myeloid differentiation primary response protein MyD88 (MyD88) mRNA and inflammatory factors was detected by RNA interference. The results showed that OMP25 interacted with FTH1. Subsequently, TLR4 and MyD88 mRNA expression levels and inflammatory factors, such as nitric oxide, lactate dehydrogenase and TNF‑α, significantly increased after inserting OMP25 into the HPT‑8 cells. Notably, a low dose of OMP25 resulted in immunological protection, whereas high dose of OMP25 resulted in a cytotoxic effect on the HPT‑8 cells. It is suggested that OMP25 and FTH1 serve important roles in intracellular parasitism of Brucella and inhibition of expression.
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Affiliation(s)
- Yu Zhang
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003, P.R. China
| | - Xiaofeng Wang
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003, P.R. China
| | - Zhiqiang Li
- College of Biology and Food, Shangqiu Normal University, Shangqiu, Henan 476000, P.R. China
| | - Jing Zhang
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003, P.R. China
| | - Yong Wang
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003, P.R. China
| | - Changxin Wu
- Institute of Biomedical Sciences, Shanxi University, Taiyuan, Shanxi 030006, P.R. China
| | - Chuangfu Chen
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003, P.R. China
| | - Jie Li
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003, P.R. China
| | - Hui Zhang
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003, P.R. China
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Zhu T, Li X, Wu X, Yang D. Temperature Acclimation Alters the Thermal Tolerance and Intestinal Heat Stress Response in a Tibetan Fish Oxygymnocypris stewarti. Front Microbiol 2022; 13:898145. [PMID: 35814681 PMCID: PMC9261780 DOI: 10.3389/fmicb.2022.898145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 05/27/2022] [Indexed: 11/13/2022] Open
Abstract
Numerous studies have shown that thermal tolerance and intestinal heat resistance are strongly associated with temperature acclimation. However, few reports have successfully conducted similar research on fishes from the Qinghai–Tibetan Plateau, an area that is facing the threat of climate warming. Therefore, the present study determined the growth, thermal tolerance, and intestinal heat stress (exposure to 30°C) responses in juveniles of a Tibetan fish, Oxygymnocypris stewarti, acclimated to three temperature levels (10°C, 15°C, and 20°C, named as T10, T15, and T20, respectively) for 30 days. The fastest growth was recorded in the T15 group. At 1°C/30 min heating rate, the critical thermal maximum (CTMax) ranged from 31.3°C to 32.3°C, and the lethal thermal maximum (LTMax) ranged from 31.8°C to 32.6°C among the three acclimation temperatures. According to the results of thermal tolerance tests, the heat stress temperature was set to 30°C. When the water temperature reached 30°C, the expression of the intestinal heat shock protein 70 (HSP70) gene as well as the intestinal microbiome and histology of experimental fish were monitored at 0, 2, 6, and 12 h. The expression of HSP70 reached the highest level at 2 h in all three temperature treatments. The histological analysis showed damage to intestinal cells, including diffuse infiltration of lymphocytes, villi epithelial cell swelling, decrease of intestinal villi length, and cytoplasmic light staining at 2 h in all three temperature treatments. In terms of the intestinal microbiome, phyla Proteobacteria and Firmicutes dominated the treatments at each monitored time in the T10 and T15 groups and at 0 h in T20 group, while phyla Fusobacteria, Proteobacteria, and Cyanobacteria were dominant in treatments at 2, 6, and 12 h in the T20 group. The overall results indicated that acclimation temperature could affect the growth, thermal tolerance, and intestinal heat stress response of O. stewarti juveniles. As the first report on intestinal heat stress response associated with temperature acclimation in a Tibetan fish, this study will help to understand the potential effects of climate change on highland fishes.
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A Novel, Rapid, and Simple PMA-qPCR Method for Detection and Counting of Viable Brucella Organisms. J Vet Res 2020; 64:253-261. [PMID: 32587912 PMCID: PMC7305652 DOI: 10.2478/jvetres-2020-0033] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 04/28/2020] [Indexed: 11/20/2022] Open
Abstract
Introduction The plate counting method widely used at present to discern viable from non-viable Brucella in the host or cell is time-consuming and laborious. Therefore, it is necessary to establish a rapid, simple method for detecting and counting viable Brucella organisms. Material and Methods Using propidium monoazide (PMA) to inhibit amplification of DNA from dead Brucella, a novel, rapid PMA-quantitative PCR (PMA-qPCR) detection method for counting viable Brucella was established. The standard recombinant plasmid with the target BCSP31 gene fragment inserted was constructed for drawing a standard curve. The reaction conditions were optimised, and the sensitivity, specificity, and repeatability were analysed. Results The optimal exposure time and working concentration of PMA were 10 min and 15 μg/mL, respectively. The correlation coefficient (R2) of the standard curve was 0.999. The sensitivity of the method was 103 CFU/mL, moreover, its specificity and repeatability also met the requirements. The concentration of B. suis measured by the PMA-qPCR did not differ significantly from that measured by the plate counting method, and the concentrations of viable bacteria in infected cells determined by the two methods were of the same order of magnitude. Conclusion In this study, a rapid and simple PMA-qPCR counting method for viable Brucella was established, which will facilitate related research.
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Wang LL, Chen XF, Hu P, Lu SY, Fu BQ, Li YS, Zhai FF, Ju DD, Zhang SJ, Shui YM, Chang J, Ma XL, Su B, Zhou Y, Liu ZS, Ren HL. Host Prdx6 contributing to the intracellular survival of Brucella suis S2 strain. BMC Vet Res 2019; 15:304. [PMID: 31438945 PMCID: PMC6704487 DOI: 10.1186/s12917-019-2049-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Accepted: 08/12/2019] [Indexed: 02/22/2023] Open
Abstract
BACKGROUND Brucellosis is a worldwide zoonotic infectious disease that is transmitted in various ways and causes great harm to humans and animals. The brucellosis pathogen is Brucella, which mainly resides in macrophage cells and survives and replicates in host cells. However, the mechanisms underlying Brucella survival in macrophage cells have not been thoroughly elucidated to date. Peroxiredoxin 6 (Prdx6) is a bifunctional protein that shows not only GSH peroxidase activity but also phospholipase A2 activity and plays important roles in combating oxidative damage and regulating apoptosis. RESULTS Recombinant mouse (Mus musculus) Prdx6 (MmPrdx6) was expressed and purified, and monoclonal antibodies against MmPrdx6 were prepared. Using the Brucella suis S2 strain to infect RAW264.7 murine macrophages, the level of intracellular Prdx6 expression first decreased and later increased following infection. Overexpressing Prdx6 in macrophages resulted in an increase in B. suis S2 strain levels in RAW264.7 cells, while knocking down Prdx6 reduced the S2 levels in cells. CONCLUSIONS Host Prdx6 can increase the intracellular survival of B. suis S2 strain and plays a role in Brucella infection.
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Affiliation(s)
- Lu-Lu Wang
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China
| | - Xiao-Feng Chen
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China
| | - Pan Hu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China
| | - Shi-Ying Lu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China
| | - Bao-Quan Fu
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Public Health of the Ministry of Agriculture, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China
| | - Yan-Song Li
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China
| | - Fei-Fei Zhai
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China
| | - Dan-Di Ju
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China
| | - Shi-Jun Zhang
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China
| | - Yi-Ming Shui
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China
| | - Jiang Chang
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China
| | - Xiao-Long Ma
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China.,Shaheyan Animal Husbandry and Veterinary Medicine Station of Dunhua City, Dunhua, 133700, China
| | - Bing Su
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China
| | - Yu Zhou
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China
| | - Zeng-Shan Liu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China
| | - Hong-Lin Ren
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China.
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Abstract
Abstract
Introduction
Serological diagnosis of brucellosis is still a great challenge due to the infeasibility of discriminating infected animals from vaccinated ones, so it is necessary to search for diagnostic biomarkers for differential diagnosis of brucellosis.
Material and Methods
Cell division cycle 42 (Cdc42) from sheep (Ovis aries) (OaCdc42) was cloned by rapid amplification of cDNA ends (RACE), and then tissue distribution and differential expression levels of OaCdc42 mRNA between infected and vaccinated sheep were analysed by RT-qPCR.
Results
The full-length cDNA of OaCdc42 was 1,609 bp containing an open reading frame (ORF) of 576 bp. OaCdc42 mRNAs were detected in the heart, liver, spleen, lung, kidneys, rumen, small intestine, skeletal muscles, and buffy coat, and the highest expression was detected in the small intestine. Compared to the control, the levels of OaCdc42 mRNA from sheep infected with Brucella melitensis or sheep vaccinated with Brucella suis S2 was significantly different (P < 0.01) after 40 and 30 days post-inoculation, respectively. However, the expression of OaCdc42 mRNA was significantly different between vaccinated and infected sheep (P < 0.05 or P < 0.01) on days: 14, 30, and 60 post-inoculation, whereas no significant difference (P > 0.05) was noted 40 days post-inoculation. Moreover, the expression of OaCdc42 from both infected and vaccinated sheep showed irregularity.
Conclusion
OaCdc42 is not a good potential diagnostic biomarker for differential diagnosis of brucellosis in sheep.
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Yang YJ, Liu ZS, Lu SY, Hu P, Li C, Ahmad W, Li YS, Xu YM, Tang F, Zhou Y, Ren HL. Cloning and Differential Expression Analyses of Cdc42 from Sheep. J Vet Res 2018; 62:113-119. [PMID: 29978136 PMCID: PMC5957470 DOI: 10.1515/jvetres-2018-0016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 02/14/2018] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION Serological diagnosis of brucellosis is still a great challenge due to the infeasibility of discriminating infected animals from vaccinated ones, so it is necessary to search for diagnostic biomarkers for differential diagnosis of brucellosis. MATERIAL AND METHODS Cell division cycle 42 (Cdc42) from sheep (Ovis aries) (OaCdc42) was cloned by rapid amplification of cDNA ends (RACE), and then tissue distribution and differential expression levels of OaCdc42 mRNA between infected and vaccinated sheep were analysed by RT-qPCR. RESULTS The full-length cDNA of OaCdc42 was 1,609 bp containing an open reading frame (ORF) of 576 bp. OaCdc42 mRNAs were detected in the heart, liver, spleen, lung, kidneys, rumen, small intestine, skeletal muscles, and buffy coat, and the highest expression was detected in the small intestine. Compared to the control, the levels of OaCdc42 mRNA from sheep infected with Brucella melitensis or sheep vaccinated with Brucella suis S2 was significantly different (P < 0.01) after 40 and 30 days post-inoculation, respectively. However, the expression of OaCdc42 mRNA was significantly different between vaccinated and infected sheep (P < 0.05 or P < 0.01) on days: 14, 30, and 60 post-inoculation, whereas no significant difference (P > 0.05) was noted 40 days post-inoculation. Moreover, the expression of OaCdc42 from both infected and vaccinated sheep showed irregularity. CONCLUSION OaCdc42 is not a good potential diagnostic biomarker for differential diagnosis of brucellosis in sheep.
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Affiliation(s)
- Yong-Jie Yang
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun130062, China
- Department of Food Science, College of Agriculture, Yanbian University, Yanji133002, China
| | - Zeng-Shan Liu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun130062, China
| | - Shi-Ying Lu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun130062, China
| | - Pan Hu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun130062, China
| | - Chuang Li
- Department of Food Science, College of Agriculture, Yanbian University, Yanji133002, China
| | - Waqas Ahmad
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun130062, China
- Section of Epidemiology and Public Health, College of Veterinary and Animal Sciences, Jhang35200, Pakistan
| | - Yan-Song Li
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun130062, China
| | - Yun-Ming Xu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun130062, China
- Jiangsu Polytechnic College of Agriculture and Forestry, Jurong212400, China
| | - Feng Tang
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun130062, China
- College of Animal Husbandry and Veterinary Medicine, Liaoning Medical University, Jinzhou121001, China
| | - Yu Zhou
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun130062, China
| | - Hong-Lin Ren
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun130062, China
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Shui YM, Lu SY, Guo X, Liu XL, Fu BQ, Hu P, Qu LL, Liu NN, Li YS, Wang LL, Zhai FF, Ju DD, Liu ZS, Zhou Y, Ren HL. Molecular characterization and differential expression analysis of interleukin 1β from Ovis aries. Microb Pathog 2018; 116:180-188. [DOI: 10.1016/j.micpath.2018.01.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 12/28/2017] [Accepted: 01/07/2018] [Indexed: 11/30/2022]
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Full-Length cDNA Cloning, Molecular Characterization and Differential Expression Analysis of Lysophospholipase I from Ovis aries. Int J Mol Sci 2016; 17:ijms17081206. [PMID: 27483239 PMCID: PMC5000604 DOI: 10.3390/ijms17081206] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 06/15/2016] [Accepted: 07/19/2016] [Indexed: 01/23/2023] Open
Abstract
Lysophospholipase I (LYPLA1) is an important protein with multiple functions. In this study, the full-length cDNA of the LYPLA1 gene from Ovis aries (OaLypla1) was cloned using primers and rapid amplification of cDNA ends (RACE) technology. The full-length OaLypla1 was 2457 bp with a 5′-untranslated region (UTR) of 24 bp, a 3′-UTR of 1740 bp with a poly (A) tail, and an open reading frame (ORF) of 693 bp encoding a protein of 230 amino acid residues with a predicted molecular weight of 24,625.78 Da. Phylogenetic analysis showed that the OaLypla1 protein shared a high amino acid identity with LYPLA1 of Bos taurus. The recombinant OaLypla1 protein was expressed and purified, and its phospholipase activity was identified. Monoclonal antibodies (mAb) against OaLypla1 that bound native OaLypla1 were generated. Real-time PCR analysis revealed that OaLypla1 was constitutively expressed in the liver, spleen, lung, kidney, and white blood cells of sheep, with the highest level in the kidney. Additionally, the mRNA levels of OaLypla1 in the buffy coats of sheep challenged with virulent or avirulent Brucella strains were down-regulated compared to untreated sheep. The results suggest that OaLypla1 may have an important physiological role in the host response to bacteria. The function of OaLypla1 in the host response to bacterial infection requires further study in the future.
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