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Han D, Ji Y, Yang S, Song P, Shi Y, Shao D, Chen X, Shang L, Shi J, Jiang C. Therapeutic effect of iturin A on Candida albicans oral infection and its pathogenic factors. Antimicrob Agents Chemother 2024; 68:e0094823. [PMID: 38051047 PMCID: PMC10777857 DOI: 10.1128/aac.00948-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 10/23/2023] [Indexed: 12/07/2023] Open
Abstract
Candida albicans is responsible for conditions ranging from superficial infections such as oral or vaginal candidiasis to potentially fatal systemic infections. It produces pathogenic factors contributing to its virulence. Iturin A, a lipopeptide derived from Bacillus sp., exhibits a significant inhibitory effect against C. albicans. However, its exact mechanism in mitigating the pathogenic factors of C. albicans remains to be elucidated. This study aimed to explore the influence of iturin A on several pathogenic attributes of C. albicans, including hypha formation, cell membrane permeability, cell adhesion, biofilm formation, and therapeutic efficacy in an oral C. albicans infection model in mice. The minimal inhibitory concentration of iturin A against C. albicans was determined to be 25 µg/mL in both YEPD and RPMI-1640 media. Iturin A effectively inhibited C. albicans hyphal formation, decreased cell viability within biofilms, enhanced cell membrane permeability, and disrupted cell adhesion in vitro. Nonetheless, iturin A did not significantly affect the phospholipase activity or hydrophobicity of C. albicans. A comparative study with nystatin demonstrated the superior therapeutic efficacy of iturin A in a mouse model of oral C. albicans infection, significantly decreasing C. albicans count and inhibiting both fungal hypha formation and tongue surface adhesion. High-dose iturin A treatment (25 µg/mL) in mice had no significant effects on blood indices, tongue condition, or body weight, indicating the potential for iturin A in managing oral infections. This study confirmed the therapeutic potential of iturin A and provided valuable insights for developing effective antifungal therapies targeting C. albicans pathogenic factors.
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Affiliation(s)
- Di Han
- School of Life Sciences, Northwestern Polytechnical University, Xi’an, Shaanxi Province, China
| | - Yulan Ji
- School of Life Sciences, Northwestern Polytechnical University, Xi’an, Shaanxi Province, China
| | - Saixue Yang
- School of Life Sciences, Northwestern Polytechnical University, Xi’an, Shaanxi Province, China
| | - Pei Song
- School of Life Sciences, Northwestern Polytechnical University, Xi’an, Shaanxi Province, China
| | - Yihong Shi
- School of Life Sciences, Northwestern Polytechnical University, Xi’an, Shaanxi Province, China
| | - Dongyan Shao
- School of Life Sciences, Northwestern Polytechnical University, Xi’an, Shaanxi Province, China
| | - Xianqing Chen
- School of Medicine, Xi’an International University, Xi’an, China
| | - Li Shang
- State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an, Shaanxi Province, China
| | - Junling Shi
- School of Life Sciences, Northwestern Polytechnical University, Xi’an, Shaanxi Province, China
| | - Chunmei Jiang
- School of Life Sciences, Northwestern Polytechnical University, Xi’an, Shaanxi Province, China
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2
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Michetti F, Clementi ME, Di Liddo R, Valeriani F, Ria F, Rende M, Di Sante G, Romano Spica V. The S100B Protein: A Multifaceted Pathogenic Factor More Than a Biomarker. Int J Mol Sci 2023; 24:ijms24119605. [PMID: 37298554 DOI: 10.3390/ijms24119605] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 05/29/2023] [Accepted: 05/30/2023] [Indexed: 06/12/2023] Open
Abstract
S100B is a calcium-binding protein mainly concentrated in astrocytes in the nervous system. Its levels in biological fluids are recognized as a reliable biomarker of active neural distress, and more recently, mounting evidence points to S100B as a Damage-Associated Molecular Pattern molecule, which, at high concentration, triggers tissue reactions to damage. S100B levels and/or distribution in the nervous tissue of patients and/or experimental models of different neural disorders, for which the protein is used as a biomarker, are directly related to the progress of the disease. In addition, in experimental models of diseases such as Alzheimer's and Parkinson's diseases, amyotrophic lateral sclerosis, multiple sclerosis, traumatic and vascular acute neural injury, epilepsy, and inflammatory bowel disease, alteration of S100B levels correlates with the occurrence of clinical and/or toxic parameters. In general, overexpression/administration of S100B worsens the clinical presentation, whereas deletion/inactivation of the protein contributes to the amelioration of the symptoms. Thus, the S100B protein may be proposed as a common pathogenic factor in different disorders, sharing different symptoms and etiologies but appearing to share some common pathogenic processes reasonably attributable to neuroinflammation.
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Affiliation(s)
- Fabrizio Michetti
- Department of Neuroscience, Catholic University of the Sacred Heart, 00168 Rome, Italy
- IRCCS San Raffaele Scientific Institute, Università Vita-Salute San Raffaele, 20132 Milan, Italy
- Department of Medicine, LUM University, 70010 Casamassima, Italy
- Genes, Via Venti Settembre 118, 00187 Roma, Italy
| | | | - Rosa Di Liddo
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, 35131 Padova, Italy
| | - Federica Valeriani
- Laboratory of Epidemiology and Biotechnologies, Department of Movement, Human and Health Sciences, University of Rome "Foro Italico", 00135 Rome, Italy
| | - Francesco Ria
- Department of Translational Medicine and Surgery, Section of General Pathology, Catholic University of the Sacred Heart, 00168 Rome, Italy
| | - Mario Rende
- Department of Medicine and Surgery, Section of Human, Clinical and Forensic Anatomy, University of Perugia, 06132 Perugia, Italy
| | - Gabriele Di Sante
- Department of Medicine and Surgery, Section of Human, Clinical and Forensic Anatomy, University of Perugia, 06132 Perugia, Italy
| | - Vincenzo Romano Spica
- Laboratory of Epidemiology and Biotechnologies, Department of Movement, Human and Health Sciences, University of Rome "Foro Italico", 00135 Rome, Italy
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3
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Jin LT, Xu MZ. Characterization of gut dominant microbiota in obese patients with nonalcoholic fatty liver disease. Front Cell Infect Microbiol 2023; 13:1113643. [PMID: 36756620 PMCID: PMC9899993 DOI: 10.3389/fcimb.2023.1113643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 01/09/2023] [Indexed: 01/24/2023] Open
Abstract
In obese patients, non-alcoholic fatty liver (NAFLD) is common. However, whether there is a connection between the gut microbiota and the onset of NAFLD in obese people is yet unknown. Using quantitative real-time PCR, the microbiota of feces of the eligible 181 obese individuals was identified to compare the differences in gut microbiota between obesity with NAFLD and simple obesity. According to the findings, the gut dominant microbiota was similar between obesity with NAFLD and simple obesity. Nonetheless, compared to the simple obesity group, the quantity of Faecalibacterium prausnitzii colonies was much lower in the obesity with the NAFLD group. Bacteroides were present in greater than 65% of both groups. Bacteroides, Clostridium leptum, and Clostridium butyricum accounted for more than 80% of the cases in the obesity with NAFLD group, whereas Bacteroides, Clostridium butyricum, and F. prausnitzii accounted for more than 80% of the cases in the simple obesity group. We look for potential contributing variables to obesity-related NAFLD and potential prevention measures for obese people. Based on a multi-factor logistic regression analysis, lymphocytes may be a risk factor for obesity with NAFLD while F. prausnitzii may be a protective factor. Additionally, F. prausnitzii is positively impacted by Bacteroides, Clostridium leptum, Clostridium butyricum, and Eubacterium rectale, yet adversely impacted by Enterobacteriaceae. Notably, lymphocytes and F. prausnitzii may help determine whether obese patients would develop NAFLD.
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Affiliation(s)
- Li-ting Jin
- Zhejiang University of Medicine, Hangzhou, Zhejiang, China
| | - Ming-Zhi Xu
- Department of General Medicine, Zhejiang Cancer Hospital, Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, Zhejiang, China,Department of Endocrinology and Metabolic Disease, Shulan (Hangzhou) Hospital Affiliated to Zhejiang Shuren University Shulan International Medical College, Hangzhou, Zhejiang, China,*Correspondence: Ming-Zhi Xu,
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Wang N, Tang C, Fan X, He M, Gan P, Zhang S, Hu Z, Wang X, Yan T, Shu W, Yu L, Zhao J, He J, Li L, Wang J, Huang X, Huang L, Zhou JM, Kang Z, Wang X. Inactivation of a wheat protein kinase gene confers broad-spectrum resistance to rust fungi. Cell 2022; 185:2961-2974.e19. [PMID: 35839760 DOI: 10.1016/j.cell.2022.06.027] [Citation(s) in RCA: 61] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 05/10/2022] [Accepted: 06/14/2022] [Indexed: 01/21/2023]
Abstract
Wheat crops are frequently devastated by pandemic stripe rust caused by Puccinia striiformis f. sp. tritici (Pst). Here, we identify and characterize a wheat receptor-like cytoplasmic kinase gene, TaPsIPK1, that confers susceptibility to this pathogen. PsSpg1, a secreted fungal effector vital for Pst virulence, can bind TaPsIPK1, enhance its kinase activity, and promote its nuclear localization, where it phosphorylates the transcription factor TaCBF1d for gene regulation. The phosphorylation of TaCBF1d switches its transcriptional activity on the downstream genes. CRISPR-Cas9 inactivation of TaPsIPK1 in wheat confers broad-spectrum resistance against Pst without impacting important agronomic traits in two years of field tests. The disruption of TaPsIPK1 leads to immune priming without constitutive activation of defense responses. Taken together, TaPsIPK1 is a susceptibility gene known to be targeted by rust effectors, and it has great potential for developing durable resistance against rust by genetic modifications.
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Affiliation(s)
- Ning Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China; Pioneering Innovation Center for Wheat Stress Tolerance Improvement, State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China; State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Science, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Chunlei Tang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China; Pioneering Innovation Center for Wheat Stress Tolerance Improvement, State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xin Fan
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China; Pioneering Innovation Center for Wheat Stress Tolerance Improvement, State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Mengying He
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China; Pioneering Innovation Center for Wheat Stress Tolerance Improvement, State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Pengfei Gan
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China; Pioneering Innovation Center for Wheat Stress Tolerance Improvement, State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Shan Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China; Pioneering Innovation Center for Wheat Stress Tolerance Improvement, State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Zeyu Hu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China; Pioneering Innovation Center for Wheat Stress Tolerance Improvement, State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xiaodong Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China; Pioneering Innovation Center for Wheat Stress Tolerance Improvement, State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Tong Yan
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China; Pioneering Innovation Center for Wheat Stress Tolerance Improvement, State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Weixue Shu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China; Pioneering Innovation Center for Wheat Stress Tolerance Improvement, State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Ligang Yu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China; Pioneering Innovation Center for Wheat Stress Tolerance Improvement, State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Jinren Zhao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China; Pioneering Innovation Center for Wheat Stress Tolerance Improvement, State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Jiani He
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China; Pioneering Innovation Center for Wheat Stress Tolerance Improvement, State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Lili Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China; Pioneering Innovation Center for Wheat Stress Tolerance Improvement, State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Jianfeng Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China; Pioneering Innovation Center for Wheat Stress Tolerance Improvement, State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xueling Huang
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling 712100, China
| | - Lili Huang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Jian-Min Zhou
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology and the Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing 100101, China
| | - Zhensheng Kang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China; Pioneering Innovation Center for Wheat Stress Tolerance Improvement, State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Xiaojie Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China; Pioneering Innovation Center for Wheat Stress Tolerance Improvement, State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China.
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5
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Yamazaki K, Kashimoto T, Kado T, Yoshioka K, Ueno S. Increased Vascular Permeability Due to Spread and Invasion of Vibrio vulnificus in the Wound Infection Exacerbates Potentially Fatal Necrotizing Disease. Front Microbiol 2022; 13:849600. [PMID: 35350614 PMCID: PMC8957983 DOI: 10.3389/fmicb.2022.849600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 02/17/2022] [Indexed: 11/25/2022] Open
Abstract
Vibrio vulnificus is known to cause necrotizing soft tissue infections (NSTIs). However, the pathogenic mechanism causing cellulitis, necrotizing fasciitis, muscle necrosis, and rapidly developing septicemia in humans have not been fully elucidated. Here, we report a multilayer analysis of tissue damage after subcutaneous bacterial inoculation as a murine model of V. vulnificus NSTIs. Our histopathological examination showed the progression of cellulitis, necrotizing fasciitis, and muscle necrosis worsening as the infection penetrated deeper into the muscle tissue layers. The increase in vascular permeability was the primary cause of the swelling and congestion, which are acute signs of inflammation in soft tissue and characteristic of human NSTIs. Most importantly, our sequential analysis revealed for the first time that V. vulnificus not only spreads along the skin and subcutaneous tissues or fascia but also invades deeper muscle tissues beyond the fascia as the crucial process of its lethality. Also, increased vascular permeability enabled V. vulnificus to proliferate in muscle tissue and enter the systemic circulation, escalating the bacterium’s lethality. Our finding may yield important clinical benefits to patients by helping physicians understand the impact of surgical debridement on the patient’s quality of life. Furthermore, this study provides a promising system to accelerate studies of virulence factors and eventually help establish new therapies.
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Affiliation(s)
- Kohei Yamazaki
- Laboratory of Veterinary Public Health, School of Veterinary Medicine, Kitasato University, Towada, Japan
| | - Takashige Kashimoto
- Laboratory of Veterinary Public Health, School of Veterinary Medicine, Kitasato University, Towada, Japan
| | - Takehiro Kado
- Laboratory of Veterinary Public Health, School of Veterinary Medicine, Kitasato University, Towada, Japan.,Department of Microbiology, University of Massachusetts, Amherst, MA, United States
| | - Kazuki Yoshioka
- Laboratory of Veterinary Anatomy, School of Veterinary Medicine, Kitasato University, Towada, Japan
| | - Shunji Ueno
- Laboratory of Veterinary Public Health, School of Veterinary Medicine, Kitasato University, Towada, Japan
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Omarova SM, Isaeva RI, Bagandova DS, Saidova PS, Gorelova VG. Development and study of nutrient media for determining the biological properties of Listeria. Klin Lab Diagn 2022; 67:110-114. [PMID: 35192758 DOI: 10.51620/0869-2084-2022-67-2-110-114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The commercial nutrient media for investigation of the biologic properties of L. monocytogenes is developed. The efficiency of the use of developed media for determination of motility and lecithinase activity of Listeria in the establishment of the isolated culture to the pathogenic species is shown. These nutrient media are developed for visually accurate registration of the motility and lecithinase activity of Listeria when identifying the isolated cultures improving the diagnostics of listeriosis.
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Affiliation(s)
- S M Omarova
- FSBEI HE Dagestan State Medical University of the Ministry of Health of Russia
| | - R I Isaeva
- FSBEI HE Dagestan State Medical University of the Ministry of Health of Russia
| | - D Sh Bagandova
- FSBEI HE Dagestan State Medical University of the Ministry of Health of Russia
| | - P S Saidova
- FSBEI HE Dagestan State Medical University of the Ministry of Health of Russia
| | - V G Gorelova
- FSBEI HE Dagestan State Medical University of the Ministry of Health of Russia
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7
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Wang L, Tian P, Yang X, Zhou X, Zhang S, Li C, Yang X, Liu Y. Key Amino Acids for Pepper Vein Yellows Virus P0 Protein Pathogenicity, Gene Silencing, and Subcellular Localization. Front Microbiol 2021; 12:680658. [PMID: 34589062 PMCID: PMC8475269 DOI: 10.3389/fmicb.2021.680658] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 05/28/2021] [Indexed: 11/13/2022] Open
Abstract
Pepper vein yellows virus (PeVYV) is a newly recognized Polerovirus extracted from Chinese pepper. The symptoms of PeVYV-infested pepper plants comprise intervein yellow staining, leaf curl formation and other malformations, and leaf internodal shrinkage, but the roles of the viral proteins remain undetermined. The P0 protein of the genus Polerovirus has established post-transcriptional gene silencing (PTGS) activity. This investigation focused on the PeVYV-encoded P0 protein and assessed its potential virulence capacity, PTGS activity, and tendencies to localize in the nucleus. This study revealed that P0 influenced the pathogenic properties of a specific heterologous potato virus X. In addition, P0 proteins impaired local gene silencing, although they did not regulate generalized gene silencing within Nicotiana benthamiana 16c plants. Furthermore, P0 proteins localized mainly in the nucleus, particularly in the nucleolus. P0 deletion mutagenesis demonstrated that the F-box motif (56–72 amino acids, AAs) of P0 was essential for symptom determination, inhibition of PTGS, and subcellular localization. Mutation analysis of the F-box motif of P0 protein indicated that AA 57 of the P0 protein was a pivotal site in symptom development and that AA 56 of the P0 protein was indispensable for inhibiting PTGS and subcellular localization. The outcomes obtained here suggest that further studies should be conducted on the molecular mechanisms of amino acids of the F-box domain of P0 protein in the interaction of PeVYV with plants.
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Affiliation(s)
- Lishuang Wang
- College of Plant Protection, Hunan Agricultural University, Changsha, China.,Institute of Plant Protection, Guizhou Academy of Agricultural Sciences, Guiyang, China
| | - Peijie Tian
- College of Plant Protection, Hunan Agricultural University, Changsha, China
| | - Xiuling Yang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Xueping Zhou
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Songbai Zhang
- Institute of Plant Protection, Hunan Academy of Agricultural Sciences, Changsha, China
| | - Chun Li
- Institute of Plant Protection, Guizhou Academy of Agricultural Sciences, Guiyang, China
| | - Xuehui Yang
- Institute of Plant Protection, Guizhou Academy of Agricultural Sciences, Guiyang, China
| | - Yong Liu
- College of Plant Protection, Hunan Agricultural University, Changsha, China.,Institute of Plant Protection, Hunan Academy of Agricultural Sciences, Changsha, China
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Hu C, Wu H, Sun Y, Kong J, Shao L, Chen X, Liu Q, Liu Y. GlgA plays an important role in the induction of hydrosalpinx by Chlamydia muridarum. Pathog Dis 2021; 78:5857168. [PMID: 32533831 DOI: 10.1093/femspd/ftaa027] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 06/12/2020] [Indexed: 01/10/2023] Open
Abstract
While glycogen synthase A deficiency can reduce the growth and proliferation of Chlamydia muridarum, the effect of glycogen synthase A on the pathogenic process of C. muridarum remains unclear. To characterize the effect of glycogen synthase A deficiency on the pathogenicity of C. muridarum in the genital tract, BALB/c mice were intravaginally inoculated with wild-type, plasmid-free and glycogen synthase A-deficient C. muridarum, and the genital tract tissue was isolated to assess the severity of hydrosalpinx and the levels of oviduct dilatation at day 60 after infection. The glycogen storage capacity and in vitro infection ability of different C. muridarum strains were analyzed by periodic acid-Schiff staining and quantification of progeny elementary body(EB) formation. The tissue homogenate was used to determine the recovery of different C. muridarum strains. The results show that glycogen synthase A-deficient C. muridarum induced reduction of hydrosalpinx and attenuated the extent of oviduct dilatation in mice, and exhibited reduced growth and proliferation in the mouse lower genital tract. In addition, glycogen synthase A point mutations at different sites reduced the glycogen storage capacity and in vitro infectivity of C. muridarum to different degrees. Glycogen synthase A deficiency also reduced the host inflammatory reaction and ascending infection of C. muridarum.
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Affiliation(s)
- Chunmin Hu
- Department of Dermatovenereology, Tianjin Medical University General Hospital, 154 Anshan Rd., Tianjin 300052, PR China
| | - Haoqing Wu
- Department of Dermatovenereology, Tianjin Medical University General Hospital, 154 Anshan Rd., Tianjin 300052, PR China
| | - Yina Sun
- Key Laboratory of Hormones and Development (Ministry of Health), Tianjin Key Laboratory of Metabolic Diseases, Tianjin Metabolic Diseases Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, 22 Qixiangtai Rd., Tianjin 300070, China
| | - Jie Kong
- Department of Dermatovenereology, Tianjin Medical University General Hospital, 154 Anshan Rd., Tianjin 300052, PR China
| | - LiLi Shao
- Department of Dermatovenereology, Tianjin Medical University General Hospital, 154 Anshan Rd., Tianjin 300052, PR China
| | - Xiaojun Chen
- Department of Immunology, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Immune Microenvironment and Disease of the Educational Ministry, Tianjin Medical University, Tianjin 300070, China
| | - Quanzhong Liu
- Department of Dermatovenereology, Tianjin Medical University General Hospital, 154 Anshan Rd., Tianjin 300052, PR China
| | - Yuanjun Liu
- Department of Dermatovenereology, Tianjin Medical University General Hospital, 154 Anshan Rd., Tianjin 300052, PR China
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Yamazaki K, Kashimoto T, Kado T, Akeda Y, Yoshioka K, Kodama T, Yamamoto M, Okamura M, Kakuda T, Ueno S. Chemotactic invasion in deep soft tissue by Vibrio vulnificus is essential for the progression of necrotic lesions. Virulence 2021; 11:840-848. [PMID: 32543985 PMCID: PMC7550010 DOI: 10.1080/21505594.2020.1782707] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Necrotizing soft tissue infections (NSTI) progress to severe necrosis and result in fatal sepsis within a short time. Vibrio vulnificus is a causative agent and can spread from the initial infection site through soft tissue finally to the systemic circulation of the host. The motility and chemotaxis of this bacterium are essential for proliferation and lethality in a murine model of the infection, but their role in pathogenicity has not been characterized. In this study, we revealed the roles of motility and chemotaxis during the process of V. vulnificus infection. We compared a nonmotile mutant and two nonchemotactic mutants with their parent strain (WT) with regard to bacterial spread using an in vivo imaging system (IVIS) and invasion by detection of bacteria from the muscle and spleen of a murine infection model. WT rapidly spread throughout the infected thigh and invaded deep muscle causing severe tissue damage. The detection rate in the systemic circulation and the lethality were high. On the other hand, the nonmotile mutant stayed at the inoculation site, and the nonchemotactic mutants spread only slowly through the soft tissue of the infected thigh. Detection in the systemic circulation, the degree of tissue damage, and the lethality of nonchemotactic mutants were significantly reduced in mice compared with WT. This study demonstrated that chemotaxis is essential for invasion from the infection site to the deep and distant tissues and the main pathogenic factor for the rapid progression leading to sepsis in V. vulnificus NSTI.
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Affiliation(s)
- Kohei Yamazaki
- Laboratory of Veterinary Public Health, School of Veterinary Medicine, Kitasato University , Aomori, Japan
| | - Takashige Kashimoto
- Laboratory of Veterinary Public Health, School of Veterinary Medicine, Kitasato University , Aomori, Japan
| | - Takehiro Kado
- Laboratory of Veterinary Public Health, School of Veterinary Medicine, Kitasato University , Aomori, Japan
| | - Yukihiro Akeda
- Division of Infection Control and Prevention, Osaka University Hospital , Osaka, Japan
| | - Kazuki Yoshioka
- Laboratory of Veterinary Anatomy, School of Veterinary Medicine, Kitasato University , Aomori, Japan
| | - Toshio Kodama
- Department of Bacterial Infections, International Research Center for Infectious Diseases, Research Institute for Microbial Diseases , Osaka, Japan
| | - Mai Yamamoto
- Laboratory of Nutritional Science, Okayama Prefectural University , Okayama, Japan
| | - Masashi Okamura
- Laboratory of Zoonosis, School of Veterinary Medicine, Kitasato University , Aomori, Japan
| | - Tsutomu Kakuda
- Laboratory of Animal Hygiene, School of Veterinary Medicine, Kitasato University , Aomori, Japan
| | - Shunji Ueno
- Laboratory of Veterinary Public Health, School of Veterinary Medicine, Kitasato University , Aomori, Japan
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Min YQ, Mo Q, Wang J, Deng F, Wang H, Ning YJ. SARS-CoV-2 nsp1: Bioinformatics, Potential Structural and Functional Features, and Implications for Drug/Vaccine Designs. Front Microbiol 2020; 11:587317. [PMID: 33133055 PMCID: PMC7550470 DOI: 10.3389/fmicb.2020.587317] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Accepted: 09/07/2020] [Indexed: 12/18/2022] Open
Abstract
The emerging coronavirus disease (COVID-19) caused by SARS-CoV-2 has led to social and economic disruption globally. It is urgently needed to understand the structure and function of the viral proteins for understanding of the viral infection and pathogenesis and development of prophylaxis and treatment strategies. Coronavirus non-structural protein 1 (nsp1) is a notable virulence factor with versatile roles in virus-host interactions and exhibits unique characteristics on sequence, structure, and function mode. However, the roles and characteristics of SARS-CoV-2 nsp1 are currently unclear. Here, we analyze the nsp1 of SARS-CoV-2 from the following perspectives: (1) bioinformatics analysis reveals that the novel nsp1 is conserved among SARS-CoV-2 strains and shares significant sequence identity with SARS-CoV nsp1; (2) structure modeling shows a 3D α/β-fold of SARS-CoV-2 nsp1 highly similar to that of the SARS-CoV homolog; (3) by detailed, functional review of nsp1 proteins from other coronaviruses (especially SARS-CoV) and comparison of the protein sequence and structure, we further analyzed the potential roles of SARS-CoV-2 nsp1 in manipulating host mRNA translation, antiviral innate immunity and inflammation response and thus likely promoting viral infection and pathogenesis, which are merited to be tested in the future. Finally, we discussed how understanding of the novel nsp1 may provide valuable insights into the designs of drugs and vaccines against the unprecedented coronavirus pandemic.
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Affiliation(s)
- Yuan-Qin Min
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
| | - Qiong Mo
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Jun Wang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
| | - Fei Deng
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
| | - Hualin Wang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
| | - Yun-Jia Ning
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
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11
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Li G, Zhai Y, Liu H, Wang Z, Huang R, Jiang H, Feng Y, Chang Y, Wu F, Zeng F, Jiang T, Zhang W. RPP30, a transcriptional regulator, is a potential pathogenic factor in glioblastoma. Aging (Albany NY) 2020; 12:16155-16171. [PMID: 32702667 PMCID: PMC7485703 DOI: 10.18632/aging.103596] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 06/13/2020] [Indexed: 12/11/2022]
Abstract
Background: Old age has been demonstrated to be a risk factor for GBM, but the underlying biological mechanism is still unclear. We designed this study intending to determine a mechanistic explanation for the link between age and pathogenesis in GBM. Results: The expression of RPP30, an independent prognostic factor in GBM, was negatively correlated with age in both tumor and non-tumor brain samples. However, the post-transcriptional modifications carried out by RPP30 were different in primary GBM and non-tumor brain samples. RPP30 affected protein expression of cancer pathways by performing RNA modifications. Further, we found that RPP30 was related to drug metabolism pathways important in GBM. The decreased expression of RPP30 in older patients might be a pathogenic factor for GBM. Conclusion: This study revealed the role of RPP30 in gliomagenesis and provided the theoretical foundation for targeted therapy. Methods: In total, 616 primary GBM samples and 41 non-tumor brain samples were enrolled in this study. Transcriptome data and clinical information were obtained from the CGGA, TCGA, and GSE53890 databases. Gene Set Variation Analysis and Gene Ontology analyses were the primary analytical methods used in this study. All statistical analyses were performed using R.
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Affiliation(s)
- Guanzhang Li
- Department of Molecular Neuropathology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
| | - You Zhai
- Department of Molecular Neuropathology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
| | - Hanjie Liu
- Department of Molecular Neuropathology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
| | - Zhiliang Wang
- Department of Molecular Neuropathology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
| | - Ruoyu Huang
- Department of Molecular Neuropathology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
| | - Haoyu Jiang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Yuemei Feng
- Department of Molecular Neuropathology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
| | - Yuanhao Chang
- Department of Molecular Neuropathology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
| | - Fan Wu
- Department of Molecular Neuropathology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
| | - Fan Zeng
- Department of Molecular Neuropathology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
| | - Tao Jiang
- Department of Molecular Neuropathology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China.,Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,Center of Brain Tumor, Beijing Institute for Brain Disorders, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China.,Chinese Glioma Genome Atlas Network (CGGA) and Asian Glioma Genome Atlas Network (AGGA)
| | - Wei Zhang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China.,Chinese Glioma Genome Atlas Network (CGGA) and Asian Glioma Genome Atlas Network (AGGA)
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12
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Ren K, Wang W, Ma X, Guo F, Li P, Liu L. Nasopharyngeal carcinoma mimicking Aspergillosis rhinosinusitis: an unusual case report and review of the literature. Int J Clin Exp Pathol 2014; 7:9050-9055. [PMID: 25674286 PMCID: PMC4313968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Accepted: 12/01/2014] [Indexed: 06/04/2023]
Abstract
Clinical symptoms and imaging features of fungal infection are confused with those of atypical nasopharyngeal carcinoma (NPC), and therefore development of a more effective diagnostic method is essential. It is a common knowledge that there is a significant association between Epstein-Barr virus (EBV) and nonkeratinizing NPC. However, fungal infection may be considered to be a vital etiologic agent contributing to the NPC and more evidence is needed to be approved this theory. We report on a rare case of a patient with atypical nasopharyngeal carcinoma (NPC) who suffered from chronic fungal infection and was diagnosed initially as Aspergillosis. Following anti-aspergillus infection therapy, the repeated deep biopsy of the maxillary sinus and MRI confirmed the diagnosis of nasopharyngeal carcinoma (NPC).
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Affiliation(s)
- Kexing Ren
- Department of Oncology and State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan UniversityChengdu, China
| | - Weiya Wang
- Department of Pathology, West China Hospital, West China Medical School, Sichuan UniversityChengdu, China
| | - Xuelei Ma
- Department of Oncology and State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan UniversityChengdu, China
| | - Fuchun Guo
- Department of Oncology and State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan UniversityChengdu, China
| | - Ping Li
- Department of Oncology and State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan UniversityChengdu, China
| | - Lei Liu
- Department of Oncology and State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan UniversityChengdu, China
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13
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Tang Q, Liu YP, Ren ZG, Yan XX, Zhang LQ. 1.37 Å crystal structure of pathogenic factor pectate lyase from Acidovorax citrulli. Proteins 2013; 81:1485-90. [PMID: 23568384 DOI: 10.1002/prot.24298] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Revised: 03/18/2013] [Accepted: 03/22/2013] [Indexed: 11/11/2022]
Abstract
Pectates lyase (Pel) plays an important role in bacteria pathogenicity. The crystal structure of Pel from Acidovorax citrulli (AcPel) has been solved to 1.37 Å resolution. AcPel belongs to the polysaccharide lyase family 1 (PL1), which has a characteristic right-handed β-helix fold. AcPel is similar with other Pels in the PL1 family, but also shows some differences at the substrate binding site.
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Affiliation(s)
- Qun Tang
- Department of Plant Pathology, China Agricultural University, Beijing, China
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