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Wang Q, Lan X, Ke H, Xu S, Huang C, Wang J, Wang X, Huang T, Wu X, Chen M, Guo Y, Zeng L, Tian XL, Xiang Y. Histone β-hydroxybutyrylation is critical in reversal of sarcopenia. Aging Cell 2024:e14284. [PMID: 39076122 DOI: 10.1111/acel.14284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 06/30/2024] [Accepted: 07/03/2024] [Indexed: 07/31/2024] Open
Abstract
Sarcopenia, a leading cause for global disability and mortality, is an age-related muscular disorder, characterized by accelerated muscle mass loss and functional decline. It is known that caloric restriction (CR), ketogenic diet or endurance exercise lessen sarcopenia and elevate circulating β-hydroxybutyrate (β-HB) levels. Whether the elevated β-HB is essential to the reversal of sarcopenia, however, remains unclear. Here we show in both Caenorhabditis elegans and mouse models that an increase of β-HB reverse myofiber atrophy and improves motor functions at advanced ages. β-HB-induced histone lysine β-hydroxybutyrylation (Kbhb) is indispensable for the reversal of sarcopenia. Histone Kbhb enhances transcription of genes associated with mitochondrial pathways, including oxidative phosphorylation, ATP metabolic process and aerobic respiration. This ultimately leads to improve mitochondrial integrity and enhance mitochondrial respiration. The histone Kbhb are validated in mouse model with CR. Thus, we demonstrate that β-HB induces histone Kbhb, increases mitochondrial function, and reverses sarcopenia.
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Affiliation(s)
- Qiquan Wang
- Metabolic Control and Aging, Human Aging Research Institute and School of Life Science, Nanchang University, and Jiangxi Key Laboratory of Aging and Diseases, Nanchang, China
| | - Xinqiang Lan
- Metabolic Control and Aging, Human Aging Research Institute and School of Life Science, Nanchang University, and Jiangxi Key Laboratory of Aging and Diseases, Nanchang, China
| | - Hao Ke
- Metabolic Control and Aging, Human Aging Research Institute and School of Life Science, Nanchang University, and Jiangxi Key Laboratory of Aging and Diseases, Nanchang, China
| | - Siman Xu
- Metabolic Control and Aging, Human Aging Research Institute and School of Life Science, Nanchang University, and Jiangxi Key Laboratory of Aging and Diseases, Nanchang, China
| | - Chunping Huang
- Metabolic Control and Aging, Human Aging Research Institute and School of Life Science, Nanchang University, and Jiangxi Key Laboratory of Aging and Diseases, Nanchang, China
| | - Jiali Wang
- Metabolic Control and Aging, Human Aging Research Institute and School of Life Science, Nanchang University, and Jiangxi Key Laboratory of Aging and Diseases, Nanchang, China
| | - Xiang Wang
- Metabolic Control and Aging, Human Aging Research Institute and School of Life Science, Nanchang University, and Jiangxi Key Laboratory of Aging and Diseases, Nanchang, China
| | - Tiane Huang
- Metabolic Control and Aging, Human Aging Research Institute and School of Life Science, Nanchang University, and Jiangxi Key Laboratory of Aging and Diseases, Nanchang, China
| | - Xia Wu
- Metabolic Control and Aging, Human Aging Research Institute and School of Life Science, Nanchang University, and Jiangxi Key Laboratory of Aging and Diseases, Nanchang, China
| | - Mengxin Chen
- Metabolic Control and Aging, Human Aging Research Institute and School of Life Science, Nanchang University, and Jiangxi Key Laboratory of Aging and Diseases, Nanchang, China
| | - Yingqi Guo
- Institutional Center for Shared Technologies and Facilities of the Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - Lin Zeng
- Institutional Center for Shared Technologies and Facilities of the Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - Xiao-Li Tian
- Aging and Vascular Diseases, Human Aging Research Institute and School of Life Science, Nanchang University, and Jiangxi Key Laboratory of Aging and Diseases, Nanchang, China
| | - Yang Xiang
- Metabolic Control and Aging, Human Aging Research Institute and School of Life Science, Nanchang University, and Jiangxi Key Laboratory of Aging and Diseases, Nanchang, China
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Gupta LK, Molla J, Prabhu AA. Story of Pore-Forming Proteins from Deadly Disease-Causing Agents to Modern Applications with Evolutionary Significance. Mol Biotechnol 2024; 66:1327-1356. [PMID: 37294530 DOI: 10.1007/s12033-023-00776-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 05/21/2023] [Indexed: 06/10/2023]
Abstract
Animal venoms are a complex mixture of highly specialized toxic molecules. Among them, pore-forming proteins (PFPs) or toxins (PFTs) are one of the major disease-causing toxic elements. The ability of the PFPs in defense and toxicity through pore formation on the host cell surface makes them unique among the toxin proteins. These features made them attractive for academic and research purposes for years in the areas of microbiology as well as structural biology. All the PFPs share a common mechanism of action for the attack of host cells and pore formation in which the selected pore-forming motifs of the host cell membrane-bound protein molecules drive to the lipid bilayer of the cell membrane and eventually produces water-filled pores. But surprisingly their sequence similarity is very poor. Their existence can be seen both in a soluble state and also in transmembrane complexes in the cell membrane. PFPs are prevalent toxic factors that are predominately produced by all kingdoms of life such as virulence bacteria, nematodes, fungi, protozoan parasites, frogs, plants, and also from higher organisms. Nowadays, multiple approaches to applications of PFPs have been conducted by researchers both in basic as well as applied biological research. Although PFPs are very devastating for human health nowadays researchers have been successful in making these toxic proteins into therapeutics through the preparation of immunotoxins. We have discussed the structural, and functional mechanism of action, evolutionary significance through dendrogram, domain organization, and practical applications for various approaches. This review aims to emphasize the PFTs to summarize toxic proteins together for basic knowledge as well as to highlight the current challenges, and literature gap along with the perspective of promising biotechnological applications for their future research.
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Affiliation(s)
- Laxmi Kumari Gupta
- Bioprocess Development Laboratory, Department of Biotechnology, National Institute of Technology Warangal, Warangal, Telangana, 506004, India
| | - Johiruddin Molla
- Ghatal Rabindra Satabarsiki Mahavidyalaya Ghatal, Paschim Medinipur, Ghatal, West Bengal, 721212, India
| | - Ashish A Prabhu
- Bioprocess Development Laboratory, Department of Biotechnology, National Institute of Technology Warangal, Warangal, Telangana, 506004, India.
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3
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Zhang H, Zeng W, Zhao MM, Wang J, Wang Q, Chen T, Zhang Y, Lee W, Chen S, Zhang Y, Lan X, Xiang Y. Caenorhabditis elegans LIN-24, a homolog of bacterial pore-forming toxin, protects the host from microbial infection. FASEB J 2023; 37:e23162. [PMID: 37682220 DOI: 10.1096/fj.202300063r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 07/18/2023] [Accepted: 08/11/2023] [Indexed: 09/09/2023]
Abstract
Aerolysin-like pore-forming protein (af-PFP) superfamily members are double-edge swords that assist the bacterial infection but shied bacteria from the host by various mechanisms in some species including the toad Bombina maxima and zebrafish. While members of this family are widely expressed in all kingdoms, especially non-bacteria species, it remains unclear whether their anti-bacterial function is conserved. LIN-24 is an af-PFP that is constitutively expressed throughout the Caenorhabditis elegans lifespan. Here, we observed that LIN-24 knockdown reduced the maximum lifespan of worms. RNA-seq analysis identified 323 differentially expressed genes (DEGs) post-LIN-24 knockdown that were enriched in "immune response" and "lysosome pathway," suggesting a possible role for LIN-24 in resisting microbial infection. In line with this, we found that Pseudomonas aeruginosa 14 (PA14) infection induced LIN-24 expression, and that survival after PA14 infection was significantly reduced by LIN-24 knockdown. In contrast, LIN-24 overexpression (LIN-24-OE) conferred protection against PA14 infection, with worms showing longer survival time and reduced bacterial load. Weighted gene co-expression network analysis of LIN-24-OE worms showed that the highest correlation module was enriched in factors related to immunity and the defense response. Finally, by predicting transcription factors from RNA-seq data and knocking down candidate transcription factors in LIN-24-OE worms, we revealed that LIN-24 may protect worms against bacterial infection by stimulating DAF-16-mediated immune responses. These findings agree with our previous studies showing an anti-microbial role for the amphibian-derived af-PFP complex βγ-CAT, suggesting that af-PFPs may play a conserved role in combatting microbial infections. Further research is needed to determine the roles this protein family plays in other physio-pathological processes, such as metabolism, longevity, and aging.
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Affiliation(s)
- Huijie Zhang
- Metabolic Control and Aging, Human Aging Research Institute (HARI) and School of Life Science, Nanchang University, and Jiangxi Key Laboratory of Human Aging, Nanchang, China
| | - Weirong Zeng
- Metabolic Control and Aging, Human Aging Research Institute (HARI) and School of Life Science, Nanchang University, and Jiangxi Key Laboratory of Human Aging, Nanchang, China
| | - Ming-Ming Zhao
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming, China
| | - Jiali Wang
- Metabolic Control and Aging, Human Aging Research Institute (HARI) and School of Life Science, Nanchang University, and Jiangxi Key Laboratory of Human Aging, Nanchang, China
| | - Qiquan Wang
- Metabolic Control and Aging, Human Aging Research Institute (HARI) and School of Life Science, Nanchang University, and Jiangxi Key Laboratory of Human Aging, Nanchang, China
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming, China
| | - Ting Chen
- Metabolic Control and Aging, Human Aging Research Institute (HARI) and School of Life Science, Nanchang University, and Jiangxi Key Laboratory of Human Aging, Nanchang, China
| | - Yuyan Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming, China
| | - Wenhui Lee
- Metabolic Control and Aging, Human Aging Research Institute (HARI) and School of Life Science, Nanchang University, and Jiangxi Key Laboratory of Human Aging, Nanchang, China
| | - Shenghan Chen
- Metabolic Control and Aging, Human Aging Research Institute (HARI) and School of Life Science, Nanchang University, and Jiangxi Key Laboratory of Human Aging, Nanchang, China
| | - Yun Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming, China
| | - Xinqiang Lan
- Metabolic Control and Aging, Human Aging Research Institute (HARI) and School of Life Science, Nanchang University, and Jiangxi Key Laboratory of Human Aging, Nanchang, China
| | - Yang Xiang
- Metabolic Control and Aging, Human Aging Research Institute (HARI) and School of Life Science, Nanchang University, and Jiangxi Key Laboratory of Human Aging, Nanchang, China
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Liu LZ, Liu L, Shi ZH, Bian XL, Si ZR, Wang QQ, Xiang Y, Zhang Y. Amphibian pore-forming protein βγ-CAT drives extracellular nutrient scavenging under cell nutrient deficiency. iScience 2023; 26:106598. [PMID: 37128610 PMCID: PMC10148134 DOI: 10.1016/j.isci.2023.106598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 02/22/2023] [Accepted: 03/30/2023] [Indexed: 05/03/2023] Open
Abstract
Nutrient acquisition is essential for animal cells. βγ-CAT is a pore-forming protein (PFP) and trefoil factor complex assembled under tight regulation identified in toad Bombina maxima. Here, we reported that B. maxima cells secreted βγ-CAT under glucose, glutamine, and pyruvate deficiency to scavenge extracellular proteins for their nutrient supply and survival. AMPK signaling positively regulated the expression and secretion of βγ-CAT. The PFP complex selectively bound extracellular proteins and promoted proteins uptake through endolysosomal pathways. Elevated intracellular amino acids, enhanced ATP production, and eventually prolonged cell survival were observed in the presence of βγ-CAT and extracellular proteins. Liposome assays indicated that high concentration of ATP negatively regulated the opening of βγ-CAT channels. Collectively, these results uncovered that βγ-CAT is an essential element in cell nutrient scavenging under cell nutrient deficiency by driving vesicular uptake of extracellular proteins, providing a new paradigm for PFPs in cell nutrient acquisition and metabolic flexibility.
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Affiliation(s)
- Ling-Zhen Liu
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Engineering Laboratory of Peptides of the Chinese Academy of Sciences, Kunming Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan 650201, China
- Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan 650204, China
| | - Long Liu
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Engineering Laboratory of Peptides of the Chinese Academy of Sciences, Kunming Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan 650201, China
- Human Aging Research Institute (HARI) and School of Life Sciences, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Zhi-Hong Shi
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Engineering Laboratory of Peptides of the Chinese Academy of Sciences, Kunming Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan 650201, China
- Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan 650204, China
| | - Xian-Ling Bian
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Engineering Laboratory of Peptides of the Chinese Academy of Sciences, Kunming Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan 650201, China
- School of Life Science, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Zi-Ru Si
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Engineering Laboratory of Peptides of the Chinese Academy of Sciences, Kunming Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan 650201, China
- School of Life Science, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Qi-Quan Wang
- Human Aging Research Institute (HARI) and School of Life Sciences, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Yang Xiang
- Human Aging Research Institute (HARI) and School of Life Sciences, Nanchang University, Nanchang, Jiangxi 330031, China
- Corresponding author
| | - Yun Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Engineering Laboratory of Peptides of the Chinese Academy of Sciences, Kunming Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan 650201, China
- Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan 650204, China
- Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming, Yunnan 650201, China
- Corresponding author
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5
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Bian X, Si Z, Wang Q, Liu L, Shi Z, Tian C, Lee W, Zhang Y. IgG Fc-binding protein positively regulates the assembly of pore-forming protein complex βγ-CAT evolved to drive cell vesicular delivery and transport. J Biol Chem 2023; 299:104717. [PMID: 37068610 DOI: 10.1016/j.jbc.2023.104717] [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: 09/15/2022] [Revised: 04/10/2023] [Accepted: 04/11/2023] [Indexed: 04/19/2023] Open
Abstract
Cell membranes form barriers for molecule exchange between the cytosol and the extracellular environments. βγ-CAT, a complex of pore-forming protein (PFP) BmALP1 (two βγ-crystallin domains with an aerolysin pore-forming domain) and the trefoil factor BmTFF3, has been identified in toad Bombina maxima. It plays pivotal roles, via inducing channel formation in various intra- or extra- cellular vesicles, as well as in nutrient acquisition, maintaining water balance, and antigen presentation. Thus, such a protein machine should be tightly regulated. Indeed, BmALP3 (a paralog of BmALP1) oxidizes BmALP1 to form a water-soluble polymer, leading to dissociation of the βγ-CAT complex and loss of biological activity. Here, we found that the B. maxima IgG Fc-binding protein (FCGBP), a well-conserved vertebrate mucin-like protein with unknown functions, acted as a positive regulator for βγ-CAT complex assembly. The interactions among FCGBP, BmALP1, and BmTFF3 were revealed by co-immunoprecipitation assays. Interestingly, FCGBP reversed the inhibitory effect of BmALP3 on the βγ-CAT complex. Furthermore, FCGBP reduced BmALP1 polymers and facilitated the assembly of βγ-CAT with the biological pore-forming activity in the presence of BmTFF3. Our findings define the role of FCGBP in mediating the assembly of a PFP machine evolved to drive cell vesicular delivery and transport.
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Affiliation(s)
- Xianling Bian
- Hefei National Laboratory for Physical Sciences at Microscale, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui 230027, China; Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Sciences/Engineering Laboratory of Peptides of the Chinese Academy of Sciences, Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan 650201, China
| | - Ziru Si
- Hefei National Laboratory for Physical Sciences at Microscale, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui 230027, China; Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Sciences/Engineering Laboratory of Peptides of the Chinese Academy of Sciences, Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan 650201, China
| | - Qiquan Wang
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Sciences/Engineering Laboratory of Peptides of the Chinese Academy of Sciences, Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan 650201, China; Human Aging Research Institute (HARI) and School of Life Sciences, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Lingzhen Liu
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Sciences/Engineering Laboratory of Peptides of the Chinese Academy of Sciences, Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan 650201, China
| | - Zhihong Shi
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Sciences/Engineering Laboratory of Peptides of the Chinese Academy of Sciences, Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan 650201, China
| | - Changlin Tian
- Hefei National Laboratory for Physical Sciences at Microscale, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui 230027, China.
| | - Wenhui Lee
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Sciences/Engineering Laboratory of Peptides of the Chinese Academy of Sciences, Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan 650201, China.
| | - Yun Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Sciences/Engineering Laboratory of Peptides of the Chinese Academy of Sciences, Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan 650201, China; Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming, Yunnan 650201, China.
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A Pore Forming Toxin-like Protein Derived from Chinese Red Belly Toad Bombina maxima Triggers the Pyroptosis of Hippomal Neural Cells and Impairs the Cognitive Ability of Mice. Toxins (Basel) 2023; 15:toxins15030191. [PMID: 36977082 PMCID: PMC10054870 DOI: 10.3390/toxins15030191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 02/22/2023] [Accepted: 02/28/2023] [Indexed: 03/06/2023] Open
Abstract
Toxin-like proteins and peptides of skin secretions from amphibians play important physiological and pathological roles in amphibians. βγ-CAT is a Chinese red-belly toad-derived pore-forming toxin-like protein complex that consists of aerolysin domain, crystalline domain, and trefoil factor domain and induces various toxic effects via its membrane perforation process, including membrane binding, oligomerization, and endocytosis. Here, we observed the death of mouse hippocampal neuronal cells induced by βγ-CAT at a concentration of 5 nM. Subsequent studies showed that the death of hippocampal neuronal cells was accompanied by the activation of Gasdermin E and caspase-1, suggesting that βγ-CAT induces the pyroptosis of hippocampal neuronal cells. Further molecular mechanism studies revealed that the pyroptosis induced by βγ-CAT is dependent on the oligomerization and endocytosis of βγ-CAT. It is well known that the damage of hippocampal neuronal cells leads to the cognitive attenuation of animals. The impaired cognitive ability of mice was observed after intraperitoneal injection with 10 μg/kg βγ-CAT in a water maze assay. Taken together, these findings reveal a previously unknown toxicological function of a vertebrate-derived pore-forming toxin-like protein in the nerve system, which triggers the pyroptosis of hippocampal neuronal cells, ultimately leading to hippocampal cognitive attenuation.
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A pore-forming protein drives macropinocytosis to facilitate toad water maintaining. Commun Biol 2022; 5:730. [PMID: 35869260 PMCID: PMC9307623 DOI: 10.1038/s42003-022-03686-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 07/07/2022] [Indexed: 02/07/2023] Open
Abstract
Maintaining water balance is a real challenge for amphibians in terrestrial environments. Our previous studies with toad Bombina maxima discovered a pore-forming protein and trefoil factor complex βγ-CAT, which is assembled under tight regulation depending on environmental cues. Here we report an unexpected role for βγ-CAT in toad water maintaining. Deletion of toad skin secretions, in which βγ-CAT is a major component, increased animal mortality under hypertonic stress. βγ-CAT was constitutively expressed in toad osmoregulatory organs, which was inducible under the variation of osmotic conditions. The protein induced and participated in macropinocytosis in vivo and in vitro. During extracellular hyperosmosis, βγ-CAT stimulated macropinocytosis to facilitate water import and enhanced exosomes release, which simultaneously regulated aquaporins distribution. Collectively, these findings uncovered that besides membrane integrated aquaporin, a secretory pore-forming protein can facilitate toad water maintaining via macropinocytosis induction and exocytosis modulation, especially in responses to osmotic stress. In addition to membrane-integrated aquaporins, a novel secretory pore-forming protein, βγ-CAT, can facilitate toad water maintaining via macropinocytosis induction and exocytosis modulation, especially in responses to osmotic stress.
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Shi ZH, Zhao Z, Liu LZ, Bian XL, Zhang Y. Pore-forming protein βγ-CAT promptly responses to fasting with capacity to deliver macromolecular nutrients. FASEB J 2022; 36:e22533. [PMID: 36065711 DOI: 10.1096/fj.202200528r] [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: 04/11/2022] [Revised: 08/18/2022] [Accepted: 08/24/2022] [Indexed: 11/11/2022]
Abstract
During animal fasting, the nutrient supply and metabolism switch from carbohydrates to a new reliance on the catabolism of energy-dense lipid stores. Assembled under tight regulation, βγ-CAT (a complex of non-lens βγ-crystallin and trefoil factor) is a pore-forming protein and trefoil factor complex identified in toad Bombina maxima. Here, we determined that this protein complex is a constitutive component in toad blood, that actively responds to the animal fasting. The protein complex was able to promote cellular albumin and albumin-bound fatty acid (FA) uptake in a variety of epithelial and endothelial cells, and the effects were attenuated by a macropinocytosis inhibitor. Endothelial cell-derived exosomes containing largely enriched albumin and FAs, called nutrisomes, were released in the presence of βγ-CAT. These specific nutrient vesicles were readily taken up by starved myoblast cells to support their survival. The results uncovered that pore-forming protein βγ-CAT is a fasting responsive element able to drive cell vesicular import and export of macromolecular nutrients.
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Affiliation(s)
- Zhi-Hong Shi
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Engineering Laboratory of Peptides of Chinese Academy of Sciences, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, China
| | - Zhong Zhao
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Engineering Laboratory of Peptides of Chinese Academy of Sciences, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China.,Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, China
| | - Ling-Zhen Liu
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Engineering Laboratory of Peptides of Chinese Academy of Sciences, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, China
| | - Xian-Ling Bian
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Engineering Laboratory of Peptides of Chinese Academy of Sciences, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China.,School of Life Science, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Yun Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Engineering Laboratory of Peptides of Chinese Academy of Sciences, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China.,Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming, China
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9
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The choanoflagellate pore-forming lectin SaroL-1 punches holes in cancer cells by targeting the tumor-related glycosphingolipid Gb3. Commun Biol 2022; 5:954. [PMID: 36097056 PMCID: PMC9468336 DOI: 10.1038/s42003-022-03869-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 08/22/2022] [Indexed: 11/15/2022] Open
Abstract
Choanoflagellates are primitive protozoa used as models for animal evolution. They express a large variety of multi-domain proteins contributing to adhesion and cell communication, thereby providing a rich repertoire of molecules for biotechnology. Adhesion often involves proteins adopting a β-trefoil fold with carbohydrate-binding properties therefore classified as lectins. Sequence database screening with a dedicated method resulted in TrefLec, a database of 44714 β-trefoil candidate lectins across 4497 species. TrefLec was searched for original domain combinations, which led to single out SaroL-1 in the choanoflagellate Salpingoeca rosetta, that contains both β-trefoil and aerolysin-like pore-forming domains. Recombinant SaroL-1 is shown to bind galactose and derivatives, with a stronger affinity for cancer-related α-galactosylated epitopes such as the glycosphingolipid Gb3, when embedded in giant unilamellar vesicles or cell membranes. Crystal structures of complexes with Gb3 trisaccharide and GalNAc provided the basis for building a model of the oligomeric pore. Finally, recognition of the αGal epitope on glycolipids required for hemolysis of rabbit erythrocytes suggests that toxicity on cancer cells is achieved through carbohydrate-dependent pore-formation. A curated lectin database, structural characterization, and in vitro assays show that choanoflagellate lectin SaroL-1 binds to cancer-related α-galactosylated epitopes and can be toxic to cancer cells through a carbohydrate-dependent pore-formation mechanism.
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10
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The Natterin Proteins Diversity: A Review on Phylogeny, Structure, and Immune Function. Toxins (Basel) 2021; 13:toxins13080538. [PMID: 34437409 PMCID: PMC8402412 DOI: 10.3390/toxins13080538] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/12/2021] [Accepted: 07/21/2021] [Indexed: 12/14/2022] Open
Abstract
Since the first record of the five founder members of the group of Natterin proteins in the venom of the medically significant fish Thalassophryne nattereri, new sequences have been identified in other species. In this work, we performed a detailed screening using available genome databases across a wide range of species to identify sequence members of the Natterin group, sequence similarities, conserved domains, and evolutionary relationships. The high-throughput tools have enabled us to dramatically expand the number of members within this group of proteins, which has a remote origin (around 400 million years ago) and is spread across Eukarya organisms, even in plants and primitive Agnathans jawless fish. Overall, the survey resulted in 331 species presenting Natterin-like proteins, mainly fish, and 859 putative genes. Besides fish, the groups with more species included in our analysis were insects and birds. The number and variety of annotations increased the knowledge of the obtained sequences in detail, such as the conserved motif AGIP in the pore-forming loop involved in the transmembrane barrel insertion, allowing us to classify them as important constituents of the innate immune defense system as effector molecules activating immune cells by interacting with conserved intracellular signaling mechanisms in the hosts.
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11
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Liu L, Deng CJ, Duan YL, Ye CJ, Gong DH, Guo XL, Lee WH, Zhou J, Li SA, Zhang Y. An Aerolysin-like Pore-Forming Protein Complex Targets Viral Envelope to Inactivate Herpes Simplex Virus Type 1. THE JOURNAL OF IMMUNOLOGY 2021; 207:888-901. [PMID: 34290105 DOI: 10.4049/jimmunol.2001056] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 05/20/2021] [Indexed: 01/12/2023]
Abstract
Because most of animal viruses are enveloped, cytoplasmic entry of these viruses via fusion with cellular membrane initiates their invasion. However, the strategies in which host cells counteract cytoplasmic entry of such viruses are incompletely understood. Pore-forming toxin aerolysin-like proteins (ALPs) exist throughout the animal kingdom, but their functions are mostly unknown. In this study, we report that βγ-crystallin fused aerolysin-like protein and trefoil factor complex (βγ-CAT), an ALP and trefoil factor complex from the frog Bombina maxima, directly blocks enveloped virus invasion by interfering with cytoplasmic entry. βγ-CAT targeted acidic glycosphingolipids on the HSV type 1 (HSV-1) envelope to induce pore formation, as indicated by the oligomer formation of protein and potassium and calcium ion efflux. Meanwhile, βγ-CAT formed ring-like oligomers of ∼10 nm in diameter on the liposomes and induced dye release from liposomes that mimic viral envelope. Unexpectedly, transmission electron microscopy analysis showed that the βγ-CAT-treated HSV-1 was visibly as intact as the vehicle-treated HSV-1, indicating that βγ-CAT did not lyse the viral envelope. However, the cytoplasmic entry of the βγ-CAT-treated HSV-1 into HeLa cells was totally hindered. In vivo, topical application of βγ-CAT attenuated the HSV-1 corneal infection in mice. Collectively, these results uncovered that βγ-CAT possesses the capacity to counteract enveloped virus invasion with its featured antiviral-acting manner. Our findings will also largely help to illustrate the putative antiviral activity of animal ALPs.
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Affiliation(s)
- Long Liu
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Science/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Cheng-Jie Deng
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Science/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Ya-Li Duan
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Science/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Chen-Jun Ye
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Science/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Dao-Hua Gong
- Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, China.,Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Science/Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Xiao-Long Guo
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Science/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Wen-Hui Lee
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Science/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Jumin Zhou
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Science/Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China;
| | - Sheng-An Li
- Department of Pathogen Biology and Immunology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan, China; and
| | - Yun Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Science/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China; .,Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming, Yunnan, China
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Chalivendra S. Microbial Toxins in Insect and Nematode Pest Biocontrol. Int J Mol Sci 2021; 22:ijms22147657. [PMID: 34299280 PMCID: PMC8303606 DOI: 10.3390/ijms22147657] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 07/09/2021] [Accepted: 07/15/2021] [Indexed: 12/24/2022] Open
Abstract
Invertebrate pests, such as insects and nematodes, not only cause or transmit human and livestock diseases but also impose serious crop losses by direct injury as well as vectoring pathogenic microbes. The damage is global but greater in developing countries, where human health and food security are more at risk. Although synthetic pesticides have been in use, biological control measures offer advantages via their biodegradability, environmental safety and precise targeting. This is amply demonstrated by the successful and widespread use of Bacillusthuringiensis to control mosquitos and many plant pests, the latter by the transgenic expression of insecticidal proteins from B. thuringiensis in crop plants. Here, I discuss the prospects of using bacterial and fungal toxins for pest control, including the molecular basis of their biocidal activity.
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13
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Palacios-Ortega J, García-Linares S, Rivera-de-Torre E, Heras-Márquez D, Gavilanes JG, Slotte JP, Martínez-Del-Pozo Á. Structural foundations of sticholysin functionality. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2021; 1869:140696. [PMID: 34246789 DOI: 10.1016/j.bbapap.2021.140696] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 07/05/2021] [Accepted: 07/06/2021] [Indexed: 01/22/2023]
Abstract
Actinoporins constitute a family of α pore-forming toxins produced by sea anemones. The soluble fold of these proteins consists of a β-sandwich flanked by two α-helices. Actinoporins exert their activity by specifically recognizing sphingomyelin at their target membranes. Once there, they penetrate the membrane with their N-terminal α-helices, a process that leads to the formation of cation-selective pores. These pores kill the target cells by provoking an osmotic shock on them. In this review, we examine the role and relevance of the structural features of actinoporins, down to the residue level. We look at the specific amino acids that play significant roles in the function of actinoporins and their fold. Particular emphasis is given to those residues that display a high degree of conservation across the actinoporin sequences known to date. In light of the latest findings in the field, the membrane requirements for pore formation, the effect of lipid composition, and the process of pore formation are also discussed.
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Affiliation(s)
- Juan Palacios-Ortega
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias Químicas, Universidad Complutense, Madrid, Spain; Biochemistry, Faculty of Science and Engineering, Åbo Akademi University, Turku, Finland.
| | - Sara García-Linares
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias Químicas, Universidad Complutense, Madrid, Spain
| | - Esperanza Rivera-de-Torre
- Department of Biochemistry and Biotechnology, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Diego Heras-Márquez
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias Químicas, Universidad Complutense, Madrid, Spain
| | - José G Gavilanes
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias Químicas, Universidad Complutense, Madrid, Spain
| | - J Peter Slotte
- Biochemistry, Faculty of Science and Engineering, Åbo Akademi University, Turku, Finland
| | - Álvaro Martínez-Del-Pozo
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias Químicas, Universidad Complutense, Madrid, Spain
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14
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Abstract
Secretory pore-forming proteins (PFPs) have been identified in organisms from all kingdoms of life. Our studies with the toad species Bombina maxima found an interaction network among aerolysin family PFPs (af-PFPs) and trefoil factors (TFFs). As a toad af-PFP, BmALP1 can be reversibly regulated between active and inactive forms, with its paralog BmALP3 acting as a negative regulator. BmALP1 interacts with BmTFF3 to form a cellular active complex called βγ-CAT. This PFP complex is characterized by acting on endocytic pathways and forming pores on endolysosomes, including stimulating cell macropinocytosis. In addition, cell exocytosis can be induced and/or modulated in the presence of βγ-CAT. Depending on cell contexts and surroundings, these effects can facilitate the toad in material uptake and vesicular transport, while maintaining mucosal barrier function as well as immune defense. Based on experimental evidence, we hereby propose a secretory endolysosome channel (SELC) pathway conducted by a secreted PFP in cell endocytic and exocytic systems, with βγ-CAT being the first example of a SELC protein. With essential roles in cell interactions and environmental adaptations, the proposed SELC protein pathway should be conserved in other living organisms.
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Affiliation(s)
- Yun Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan 650223, China.,Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming, Yunnan 650223, China. E-mail:
| | - Qi-Quan Wang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan 650223, China
| | - Zhong Zhao
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan 650223, China
| | - Cheng-Jie Deng
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan 650223, China
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15
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Pinaud S, Tetreau G, Poteaux P, Galinier R, Chaparro C, Lassalle D, Portet A, Simphor E, Gourbal B, Duval D. New Insights Into Biomphalysin Gene Family Diversification in the Vector Snail Biomphalaria glabrata. Front Immunol 2021; 12:635131. [PMID: 33868258 PMCID: PMC8047071 DOI: 10.3389/fimmu.2021.635131] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Accepted: 03/08/2021] [Indexed: 11/30/2022] Open
Abstract
Aerolysins initially characterized as virulence factors in bacteria are increasingly found in massive genome and transcriptome sequencing data from metazoans. Horizontal gene transfer has been demonstrated as the main way of aerolysin-related toxins acquisition in metazoans. However, only few studies have focused on their potential biological functions in such organisms. Herein, we present an extensive characterization of a multigene family encoding aerolysins - named biomphalysin - in Biomphalaria glabrata snail, the intermediate host of the trematode Schistosoma mansoni. Our results highlight that duplication and domestication of an acquired bacterial toxin gene in the snail genome result in the acquisition of a novel and diversified toxin family. Twenty-three biomphalysin genes were identified. All are expressed and exhibited a tissue-specific expression pattern. An in silico structural analysis was performed to highlight the central role played by two distinct domains i) a large lobe involved in the lytic function of these snail toxins which constrained their evolution and ii) a small lobe which is structurally variable between biomphalysin toxins and that matched to various functional domains involved in moiety recognition of targets cells. A functional approach suggests that the repertoire of biomphalysins that bind to pathogens, depends on the type of pathogen encountered. These results underline a neo-and sub-functionalization of the biomphalysin toxins, which have the potential to increase the range of effectors in the snail’s immune arsenal.
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Affiliation(s)
- Silvain Pinaud
- IHPE, Univ Montpellier, CNRS, IFREMER, Univ Perpignan Via Domitia, Perpignan, France.,CNRS, IFREMER, University of Montpellier, Perpignan, France
| | - Guillaume Tetreau
- IHPE, Univ Montpellier, CNRS, IFREMER, Univ Perpignan Via Domitia, Perpignan, France.,CNRS, IFREMER, University of Montpellier, Perpignan, France
| | - Pierre Poteaux
- IHPE, Univ Montpellier, CNRS, IFREMER, Univ Perpignan Via Domitia, Perpignan, France.,CNRS, IFREMER, University of Montpellier, Perpignan, France
| | - Richard Galinier
- IHPE, Univ Montpellier, CNRS, IFREMER, Univ Perpignan Via Domitia, Perpignan, France.,CNRS, IFREMER, University of Montpellier, Perpignan, France
| | - Cristian Chaparro
- IHPE, Univ Montpellier, CNRS, IFREMER, Univ Perpignan Via Domitia, Perpignan, France.,CNRS, IFREMER, University of Montpellier, Perpignan, France
| | - Damien Lassalle
- IHPE, Univ Montpellier, CNRS, IFREMER, Univ Perpignan Via Domitia, Perpignan, France.,CNRS, IFREMER, University of Montpellier, Perpignan, France
| | - Anaïs Portet
- IHPE, Univ Montpellier, CNRS, IFREMER, Univ Perpignan Via Domitia, Perpignan, France.,CNRS, IFREMER, University of Montpellier, Perpignan, France
| | - Elodie Simphor
- IHPE, Univ Montpellier, CNRS, IFREMER, Univ Perpignan Via Domitia, Perpignan, France.,CNRS, IFREMER, University of Montpellier, Perpignan, France
| | - Benjamin Gourbal
- IHPE, Univ Montpellier, CNRS, IFREMER, Univ Perpignan Via Domitia, Perpignan, France.,CNRS, IFREMER, University of Montpellier, Perpignan, France
| | - David Duval
- IHPE, Univ Montpellier, CNRS, IFREMER, Univ Perpignan Via Domitia, Perpignan, France.,CNRS, IFREMER, University of Montpellier, Perpignan, France
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16
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Lima C, Falcao MAP, Andrade-Barros AI, Seni-Silva AC, Grund LZ, Balogh E, Conceiçao K, Queniaux VF, Ryffel B, Lopes-Ferreira M. Natterin an aerolysin-like fish toxin drives IL-1β-dependent neutrophilic inflammation mediated by caspase-1 and caspase-11 activated by the inflammasome sensor NLRP6. Int Immunopharmacol 2021; 91:107287. [PMID: 33378723 DOI: 10.1016/j.intimp.2020.107287] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 12/02/2020] [Accepted: 12/07/2020] [Indexed: 02/07/2023]
Abstract
Natterin is an aerolysin-like pore-forming toxin responsible for the toxic effects of the venom of the medically significant fish Thalassophryne nattereri. Using a combination of pharmacologic and genetic loss-of-function approaches we conduct a systematic investigation of the regulatory mechanisms that control Natterin-induced neutrophilic inflammation in the peritonitis model. Our data confirmed the capacity of Natterin to induce a strong and sustained neutrophilic inflammation leading to systemic inflammatory lung infiltration and revealed overlapping regulatory paths in its control. We found that Natterin induced the extracellular release of mature IL-1β and the sustained production of IL-33 by bronchial epithelial cells. We confirmed the dependence of both ST2/IL-33 and IL-17A/IL-17RA signaling on the local and systemic neutrophils migration, as well as the crucial role of IL-1α, caspase-1 and caspase-11 for neutrophilic inflammation. The inflammation triggered by Natterin was a gasdermin-D-dependent inflammasome process, despite the cells did not die by pyroptosis. Finally, neutrophilic inflammation was mediated by non-canonical NLRP6 and NLRC4 adaptors through ASC interaction, independent of NLRP3. Our data highlight that the inflammatory process dependent on non-canonical inflammasome activation can be a target for pharmacological intervention in accidents by T. nattereri, which does not have adequate specific therapy.
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Affiliation(s)
- Carla Lima
- Immunoregulation Unit of the Laboratory of Applied Toxinology (CETICs/FAPESP), Butantan Institute, Vital Brazil Avenue, 1500. Butantan, 05503-009 São Paulo. Brazil.
| | - Maria Alice Pimentel Falcao
- Immunoregulation Unit of the Laboratory of Applied Toxinology (CETICs/FAPESP), Butantan Institute, Vital Brazil Avenue, 1500. Butantan, 05503-009 São Paulo. Brazil
| | - Aline Ingrid Andrade-Barros
- Immunoregulation Unit of the Laboratory of Applied Toxinology (CETICs/FAPESP), Butantan Institute, Vital Brazil Avenue, 1500. Butantan, 05503-009 São Paulo. Brazil
| | - Ana Carolina Seni-Silva
- Immunoregulation Unit of the Laboratory of Applied Toxinology (CETICs/FAPESP), Butantan Institute, Vital Brazil Avenue, 1500. Butantan, 05503-009 São Paulo. Brazil
| | - Lidiane Zito Grund
- Immunoregulation Unit of the Laboratory of Applied Toxinology (CETICs/FAPESP), Butantan Institute, Vital Brazil Avenue, 1500. Butantan, 05503-009 São Paulo. Brazil
| | - Eniko Balogh
- Research Centre for Molecular Medicine, Faculty of Medicine, University of Debrecen, Nagyerdei Krt 98, 4012 Debrecen, Hungary
| | - Katia Conceiçao
- Peptide Biochemistry Laboratory, UNIFESP, São José dos Campos. Brazil
| | - Valerie F Queniaux
- Allergy and Lung Inflammation Unit of the Molecular and Experimental Immunology and Neurogenetics (INEM, UMR7355, CNRS and University Orléans), Orléans, 45071 Orléans Cedex 2, France
| | - Bernhard Ryffel
- Allergy and Lung Inflammation Unit of the Molecular and Experimental Immunology and Neurogenetics (INEM, UMR7355, CNRS and University Orléans), Orléans, 45071 Orléans Cedex 2, France
| | - Monica Lopes-Ferreira
- Immunoregulation Unit of the Laboratory of Applied Toxinology (CETICs/FAPESP), Butantan Institute, Vital Brazil Avenue, 1500. Butantan, 05503-009 São Paulo. Brazil
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17
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Isolation and characterization of the major centipede allergen Sco m 5 from Scolopendra subspinipes mutilans. Allergol Int 2021; 70:121-128. [PMID: 32680616 DOI: 10.1016/j.alit.2020.06.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Revised: 06/02/2020] [Accepted: 06/05/2020] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Allergic reactions have been observed following both direct centipede bites and the clinical use of centipede-containing medicines, such as traditional Chinese medicines utilizing Scolopendra subspinipes mutilans; however, no natural centipede allergen has yet been characterized. METHODS An allergen was purified from S. s. mutilans venom using Superdex 75 gel filtration and RESOURCE S ion chromatography, and its primary structure was determined via a combination of LC-MS-MS, MALDI-TOF/TOF and protein sequencing techniques. Its potential allergenicity was evaluated by immunoblotting, ELISAs, skin prick tests (SPTs) and mast cell activation assays. RESULTS A novel allergen Sco m 5 (210 amino acids long) was successfully purified from crude S. s. mutilans venom. Sco m 5 could promote the degranulation of a human mast cell line, HMC-1. Among centipede-allergic patients, Sco m 5 showed an 83.3% IgE-binding frequency and a 66.7% positive reaction frequency, as detected by immunoblotting and SPTs, respectively. Sco m 5 IgE-binding frequencies of common Chinese population was found to be 9%-16%. Sera positive for Sco m 5 IgE-binding was cross-reactive against venom from the wasp Vespa mandaeinia. CONCLUSIONS The present study isolated and characterized a novel allergen termed as Sco m 5 from the centipede S. s. mutilans. The use of Sco m 5 to identify centipede-allergic individuals could be important, given the high potential allergenicity of Sco m 5 among the general Chinese population, along with the likely possibility of cross-reactivity against wasp venom among centipede-allergic patients.
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18
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Zhang Y, Zhang J, Vanderpool D, Smith JA, Rollins JA. Genomic and transcriptomic insights into Raffaelea lauricola pathogenesis. BMC Genomics 2020; 21:570. [PMID: 32819276 PMCID: PMC7441637 DOI: 10.1186/s12864-020-06988-y] [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: 05/14/2020] [Accepted: 08/13/2020] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Laurel wilt caused by Raffaelea lauricola is a lethal vascular disease of North American members of the Lauraceae plant family. This fungus and its primary ambrosia beetle vector Xyleborus glabratus originated from Asia; however, there is no report of laurel wilt causing widespread mortality on native Lauraceae trees in Asia. To gain insight into why R. lauricola is a tree-killing plant pathogen in North America, we generated and compared high quality draft genome assemblies of R. lauricola and its closely related non-pathogenic species R. aguacate. RESULTS Relative to R. aguacate, the R. lauricola genome uniquely encodes several small-secreted proteins that are associated with virulence in other pathogens and is enriched in secondary metabolite biosynthetic clusters, particularly polyketide synthase (PKS), non-ribosomal peptide synthetase (NRPS) and PKS-NRPS anchored gene clusters. The two species also exhibit significant differences in secreted proteins including CAZymes that are associated with polysaccharide binding including the chitin binding CBM50 (LysM) domain. Transcriptomic comparisons of inoculated redbay trees and in vitro-grown fungal cultures further revealed a number of secreted protein genes, secondary metabolite clusters and alternative sulfur uptake and assimilation pathways that are coordinately up-regulated during infection. CONCLUSIONS Through these comparative analyses we have identified potential adaptations of R. lauricola that may enable it to colonize and cause disease on susceptible hosts. How these adaptations have interacted with co-evolved hosts in Asia, where little to no disease occurs, and non-co-evolved hosts in North America, where lethal wilt occurs, requires additional functional analysis of genes and pathways.
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Affiliation(s)
- Yucheng Zhang
- Department of Plant Pathology, University of Florida, 1453 Fifield Hall, Gainesville, FL, 32611-0680, USA
| | - Junli Zhang
- Department of Plant Pathology, University of Florida, 1453 Fifield Hall, Gainesville, FL, 32611-0680, USA.,School of Forest Resources and Conservation, University of Florida, Gainesville, FL, 32611-0410, USA
| | - Dan Vanderpool
- Division of Biological Sciences, University of Montana, Missoula, MT, USA.,Present address: Department of Biology and Department of Computer Science, Indiana University, 1001 E. 3rd Street, Bloomington, IN, 47405, USA
| | - Jason A Smith
- School of Forest Resources and Conservation, University of Florida, Gainesville, FL, 32611-0410, USA
| | - Jeffrey A Rollins
- Department of Plant Pathology, University of Florida, 1453 Fifield Hall, Gainesville, FL, 32611-0680, USA.
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19
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Deng C, Liu L, Liu L, Wang Q, Guo X, Lee W, Li S, Zhang Y. A secreted pore‐forming protein modulates cellular endolysosomes to augment antigen presentation. FASEB J 2020; 34:13609-13625. [DOI: 10.1096/fj.202001176r] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 07/20/2020] [Accepted: 07/27/2020] [Indexed: 01/04/2023]
Affiliation(s)
- Cheng‐Jie Deng
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province Kunming Institute of Zoology The Chinese Academy of Sciences Kunming China
- Kunming College of Life Science University of Chinese Academy of Sciences Kunming China
| | - Long Liu
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province Kunming Institute of Zoology The Chinese Academy of Sciences Kunming China
- Kunming College of Life Science University of Chinese Academy of Sciences Kunming China
| | - Ling‐Zhen Liu
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province Kunming Institute of Zoology The Chinese Academy of Sciences Kunming China
- Kunming College of Life Science University of Chinese Academy of Sciences Kunming China
| | - Qi‐Quan Wang
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province Kunming Institute of Zoology The Chinese Academy of Sciences Kunming China
- Kunming College of Life Science University of Chinese Academy of Sciences Kunming China
| | - Xiao‐Long Guo
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province Kunming Institute of Zoology The Chinese Academy of Sciences Kunming China
| | - Wen‐Hui Lee
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province Kunming Institute of Zoology The Chinese Academy of Sciences Kunming China
| | - Sheng‐An Li
- Department of Pathogen Biology and Immunology Faculty of Basic Medical Science Kunming Medical University Kunming China
| | - Yun Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province Kunming Institute of Zoology The Chinese Academy of Sciences Kunming China
- Center for Excellence in Animal Evolution and Genetics Chinese Academy of Sciences Kunming China
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20
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Wang Q, Bian X, Zeng L, Pan F, Liu L, Liang J, Wang L, Zhou K, Lee W, Xiang Y, Li S, Teng M, Li X, Guo X, Zhang Y. A cellular endolysosome-modulating pore-forming protein from a toad is negatively regulated by its paralog under oxidizing conditions. J Biol Chem 2020; 295:10293-10306. [PMID: 32499370 DOI: 10.1074/jbc.ra120.013556] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 05/22/2020] [Indexed: 01/05/2023] Open
Abstract
Endolysosomes are key players in cell physiology, including molecular exchange, immunity, and environmental adaptation. They are the molecular targets of some pore-forming aerolysin-like proteins (ALPs) that are widely distributed in animals and plants and are functionally related to bacterial toxin aerolysins. βγ-CAT is a complex of an ALP (BmALP1) and a trefoil factor (BmTFF3) in the firebelly toad (Bombina maxima). It is the first example of a secreted endogenous pore-forming protein that modulates the biochemical properties of endolysosomes by inducing pore formation in these intracellular vesicles. Here, using a large array of biochemical and cell biology methods, we report the identification of BmALP3, a paralog of BmALP1 that lacks membrane pore-forming capacity. We noted that both BmALP3 and BmALP1 contain a conserved cysteine in their C-terminal regions. BmALP3 was readily oxidized to a disulfide bond-linked homodimer, and this homodimer then oxidized BmALP1 via disulfide bond exchange, resulting in the dissociation of βγ-CAT subunits and the elimination of biological activity. Consistent with its behavior in vitro, BmALP3 sensed environmental oxygen tension in vivo, leading to modulation of βγ-CAT activity. Interestingly, we found that this C-terminal cysteine site is well conserved in numerous vertebrate ALPs. These findings uncover the existence of a regulatory ALP (BmALP3) that modulates the activity of an active ALP (BmALP1) in a redox-dependent manner, a property that differs from those of bacterial toxin aerolysins.
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Affiliation(s)
- Qiquan Wang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Xianling Bian
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China.,Hefei National Laboratory for Physical Sciences at Microscale, Innovation Center for Cell Signaling Network, School of Life Science, University of Science and Technology of China, Hefei, Anhui, China
| | - Lin Zeng
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Fei Pan
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Lingzhen Liu
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Jinyang Liang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Lingyan Wang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Kaifeng Zhou
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Wenhui Lee
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Yang Xiang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Sheng'an Li
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Maikun Teng
- Hefei National Laboratory for Physical Sciences at Microscale, Innovation Center for Cell Signaling Network, School of Life Science, University of Science and Technology of China, Hefei, Anhui, China
| | - Xu Li
- Hefei National Laboratory for Physical Sciences at Microscale, Innovation Center for Cell Signaling Network, School of Life Science, University of Science and Technology of China, Hefei, Anhui, China
| | - Xiaolong Guo
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Yun Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China .,Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming, Yunnan, China
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21
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Yang J, Zhang H, Sun S, Wang X, Guan Y, Mi Q, Zeng W, Xiang H, Zhu H, Zou X, You Y, Xiang Y, Gao Q. Autophagy and Hsp70 activation alleviate oral epithelial cell death induced by food-derived hypertonicity. Cell Stress Chaperones 2020; 25:253-264. [PMID: 31975220 PMCID: PMC7058754 DOI: 10.1007/s12192-020-01068-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 12/12/2019] [Accepted: 01/06/2020] [Indexed: 01/16/2023] Open
Abstract
Stable intracellular and intercellular osmolarity is vital for all physiological processes. Although it is the first organ that receives food, the osmolarity around the mouth epithelium has never been systematically investigated. We found that oral epithelial cells are a population of ignored cells routinely exposed to hypertonic environments mainly composed of saline, glucose, etc. in vivo after chewing food. By using cultured oral epithelial cells as an in vitro model, we found that the hypotonic environments caused by both high NaCl and high glucose induced cell death in a dose- and time-dependent manner. Transcriptomics revealed similar expression profiles after high NaCl and high glucose stimulation. Most of the common differentially expressed genes were enriched in "mitophagy" and "autophagy" according to KEGG pathway enrichment analysis. Hypertonic stimulation for 1 to 6 h resulted in autophagosome formation. The activation of autophagy protected cells from high osmolarity-induced cell death. The activation of Hsp70 by the pharmacological activator handelin significantly improved the cell survival rate after hypertonic stimulation. The protective role of Hsp70 activation was partially dependent on autophagy activation, indicating a crosstalk between Hsp70 and autophagy in hypertonic stress response. The extract of the handelin-containing herb Chrysanthemum indicum significantly protected oral epithelial cells from hypertonic-induced death, providing an inexpensive way to protect against hypertonic-induced oral epithelial damage. In conclusion, the present study emphasized the importance of changes in osmolarity in oral health for the first time. The identification of novel compounds or herbal plant extracts that can activate autophagy or HSPs may contribute to oral health and the food industry.
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Affiliation(s)
- Ji Yang
- Technology Center of China Tobacco Yunnan Industrial Co. Ltd., No. 41 Keyi Road, Kunming, 650106, China
| | - Huijie Zhang
- Key Laboratory of Human Aging in Jiangxi Province, Human Aging Research Institute, Nanchang University, No. 999 Xuefu Road, Nanchang, 330031, China
| | - Sujiao Sun
- Medical Cosmetology Teaching and Research Section, School of Clinical Medicine, Dali University, No.32 Jiashibo Road, Dali, 532901, China
| | - Xue Wang
- School of Pharmaceutical Science &Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, No. 1168 West Chunrong Road, Kunming, 650504, China
| | - Ying Guan
- Technology Center of China Tobacco Yunnan Industrial Co. Ltd., No. 41 Keyi Road, Kunming, 650106, China
| | - Qili Mi
- Technology Center of China Tobacco Yunnan Industrial Co. Ltd., No. 41 Keyi Road, Kunming, 650106, China
| | - Wanli Zeng
- Technology Center of China Tobacco Yunnan Industrial Co. Ltd., No. 41 Keyi Road, Kunming, 650106, China
| | - Haiying Xiang
- Technology Center of China Tobacco Yunnan Industrial Co. Ltd., No. 41 Keyi Road, Kunming, 650106, China
| | - Huadong Zhu
- Key Laboratory of Human Aging in Jiangxi Province, Human Aging Research Institute, Nanchang University, No. 999 Xuefu Road, Nanchang, 330031, China
| | - Xin Zou
- Key Laboratory of Human Aging in Jiangxi Province, Human Aging Research Institute, Nanchang University, No. 999 Xuefu Road, Nanchang, 330031, China
| | - Yunfei You
- Key Laboratory of Human Aging in Jiangxi Province, Human Aging Research Institute, Nanchang University, No. 999 Xuefu Road, Nanchang, 330031, China
| | - Yang Xiang
- Key Laboratory of Human Aging in Jiangxi Province, Human Aging Research Institute, Nanchang University, No. 999 Xuefu Road, Nanchang, 330031, China.
| | - Qian Gao
- Technology Center of China Tobacco Yunnan Industrial Co. Ltd., No. 41 Keyi Road, Kunming, 650106, China.
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22
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Lassalle D, Tetreau G, Pinaud S, Galinier R, Crickmore N, Gourbal B, Duval D. Glabralysins, Potential New β-Pore-Forming Toxin Family Members from the Schistosomiasis Vector Snail Biomphalaria glabrata. Genes (Basel) 2020; 11:genes11010065. [PMID: 31936048 PMCID: PMC7016736 DOI: 10.3390/genes11010065] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 12/20/2019] [Accepted: 12/27/2019] [Indexed: 12/11/2022] Open
Abstract
Biomphalaria glabrata is a freshwater Planorbidae snail. In its environment, this mollusk faces numerous microorganisms or pathogens, and has developed sophisticated innate immune mechanisms to survive. The mechanisms of recognition are quite well understood in Biomphalaria glabrata, but immune effectors have been seldom described. In this study, we analyzed a new family of potential immune effectors and characterized five new genes that were named Glabralysins. The five Glabralysin genes showed different genomic structures and the high degree of amino acid identity between the Glabralysins, and the presence of the conserved ETX/MTX2 domain, support the hypothesis that they are pore-forming toxins. In addition, tertiary structure prediction confirms that they are structurally related to a subset of Cry toxins from Bacillus thuringiensis, including Cry23, Cry45, and Cry51. Finally, we investigated their gene expression profiles in snail tissues and demonstrated a mosaic transcription. We highlight the specificity in Glabralysin expression following immune stimulation with bacteria, yeast or trematode parasites. Interestingly, one Glabralysin was found to be expressed in immune-specialized hemocytes, and two others were induced following parasite exposure.
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Affiliation(s)
- Damien Lassalle
- IHPE, University of Montpellier, CNRS, Ifremer, University of Perpignan Via Domitia, 66860 Perpignan France; (D.L.); (G.T.); (S.P.); (R.G.); (B.G.)
| | - Guillaume Tetreau
- IHPE, University of Montpellier, CNRS, Ifremer, University of Perpignan Via Domitia, 66860 Perpignan France; (D.L.); (G.T.); (S.P.); (R.G.); (B.G.)
| | - Silvain Pinaud
- IHPE, University of Montpellier, CNRS, Ifremer, University of Perpignan Via Domitia, 66860 Perpignan France; (D.L.); (G.T.); (S.P.); (R.G.); (B.G.)
| | - Richard Galinier
- IHPE, University of Montpellier, CNRS, Ifremer, University of Perpignan Via Domitia, 66860 Perpignan France; (D.L.); (G.T.); (S.P.); (R.G.); (B.G.)
| | - Neil Crickmore
- School of Life Sciences, University of Sussex, Brighton BN1 9RH, UK;
| | - Benjamin Gourbal
- IHPE, University of Montpellier, CNRS, Ifremer, University of Perpignan Via Domitia, 66860 Perpignan France; (D.L.); (G.T.); (S.P.); (R.G.); (B.G.)
| | - David Duval
- IHPE, University of Montpellier, CNRS, Ifremer, University of Perpignan Via Domitia, 66860 Perpignan France; (D.L.); (G.T.); (S.P.); (R.G.); (B.G.)
- Correspondence:
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23
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Pang Y, Gou M, Yang K, Lu J, Han Y, Teng H, Li C, Wang H, Liu C, Zhang K, Yang Y, Li Q. Crystal structure of a cytocidal protein from lamprey and its mechanism of action in the selective killing of cancer cells. Cell Commun Signal 2019; 17:54. [PMID: 31133022 PMCID: PMC6537362 DOI: 10.1186/s12964-019-0358-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 05/01/2019] [Indexed: 12/11/2022] Open
Abstract
Background In previous research, we found that lamprey immune protein (LIP) possessed cytocidal activity against tumor cells, but the mechanism of the selective recognition and killing of tumor cells by LIP was not identified. Methods Superresolution microscopy, crystallographic structural analysis, glycan chip assay, SPR experiments, FACS assays, computational studies and mass spectrometric analysis firmly establish the mode of action of LIP, which involves dual selective recognition and efficient binding. Results We determined the overall crystallographic structure of LIP at a resolution of 2.25 Å. LIP exhibits an elongated structure with dimensions of 105 Å × 30 Å × 30 Å containing an N-terminal lectin module and a C-terminal aerolysin module. Moreover, the Phe209-Gly232 region is predicted to insert into the lipid bilayer to form a transmembrane β-barrel, in which the hydrophobic residues face the lipid bilayer, and the polar residues constitute the hydrophilic lumen of the pore. We found that LIP is able to kill various human cancer cells with minimal effects on normal cells. Notably, by coupling biochemical and computational studies, we propose a hypothetical mechanism that involves dual selective recognition and efficient binding dependent on both N-linked glycans on GPI-anchored proteins (GPI-APs) and sphingomyelin (SM) in lipid rafts. Furthermore, specific binding of the lectin module with biantennary bisialylated nonfucosylated N-glycan or sialyl Lewis X-containing glycan structures on GPI-APs triggers substantial conformational changes in the aerolysin module, which interacts with SM, ultimately resulting in the formation of a membrane-bound oligomer in lipid rafts. Conclusions LIP holds great potential for the application of a marine protein towards targeted cancer therapy and early diagnosis in humans. Electronic supplementary material The online version of this article (10.1186/s12964-019-0358-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yue Pang
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Meng Gou
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Kai Yang
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Jiali Lu
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Yinglun Han
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Hongming Teng
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Changzhi Li
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Haina Wang
- Center for Molecular Medicine, School of Life Science and Biotechnology, Dalian University of Technology, Dalian, 116023, China
| | - Caigang Liu
- Department of Breast Surgery, Shengjing Hospital of China Medical University, Shenyang, 110004, China
| | - Kejia Zhang
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Yongliang Yang
- Center for Molecular Medicine, School of Life Science and Biotechnology, Dalian University of Technology, Dalian, 116023, China.
| | - Qingwei Li
- College of Life Science, Liaoning Normal University, Dalian, 116081, China. .,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China.
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24
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Huang X, Feng Y, Xiong G, Whyte S, Duan J, Yang Y, Wang K, Yang S, Geng Y, Ou Y, Chen D. Caspase-11, a specific sensor for intracellular lipopolysaccharide recognition, mediates the non-canonical inflammatory pathway of pyroptosis. Cell Biosci 2019; 9:31. [PMID: 30962873 PMCID: PMC6438033 DOI: 10.1186/s13578-019-0292-0] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 03/21/2019] [Indexed: 02/06/2023] Open
Abstract
Pyroptosis, a type of programmed cell death that along with inflammation, is mainly regulated by two main pathways, cysteinyl aspartate specific proteinase (caspase)-1-induced canonical inflammatory pathway and caspase-11-induced non-canonical inflammatory pathway. The non-canonical inflammatory pathway-induced pyroptosis is a unique immune response in response to gram-negative (G−) bacteria. It is induced by lipopolysaccharide (LPS) on the surface of G− bacteria. This activates caspase-11 which, in turn, activates a series of downstream proteins eventually forming protein pores on the cell membrane and inducing cell sacrificial processes. Caspase-11 belongs to the caspase family and is an homologous protein of caspase-1. It has the ability to specifically hydrolyze proteins, but it is still unclear how it regulates cell death caused by non-canonical inflammatory pathways. The present study describes a pathway that enables LPS to directly enter the cell and activate caspase-11, and the key role caspase-11 plays in the activation of pyroptosis and inflammation.
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Affiliation(s)
- Xiaoli Huang
- 1College of Animal Science & Technology, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Yang Feng
- 1College of Animal Science & Technology, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Guanqing Xiong
- 1College of Animal Science & Technology, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Shona Whyte
- 2Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, C1A 8Z2 PEI Canada
| | - Jing Duan
- 1College of Animal Science & Technology, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Yucen Yang
- 1College of Animal Science & Technology, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Kaiyu Wang
- 3College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Shiyong Yang
- 1College of Animal Science & Technology, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Yi Geng
- 3College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Yangping Ou
- 3College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Defang Chen
- 1College of Animal Science & Technology, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
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25
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Guo XL, Liu LZ, Wang QQ, Liang JY, Lee WH, Xiang Y, Li SA, Zhang Y. Endogenous pore-forming protein complex targets acidic glycosphingolipids in lipid rafts to initiate endolysosome regulation. Commun Biol 2019; 2:59. [PMID: 30775460 PMCID: PMC6370762 DOI: 10.1038/s42003-019-0304-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 01/08/2019] [Indexed: 12/23/2022] Open
Abstract
Bacterial pore-forming toxin aerolysin-like proteins (ALPs) are widely distributed in animals and plants. However, functional studies on these ALPs remain in their infancy. βγ-CAT is the first example of a secreted pore-forming protein that functions to modulate the endolysosome pathway via endocytosis and pore formation on endolysosomes. However, the specific cell surface molecules mediating the action of βγ-CAT remain elusive. Here, the actions of βγ-CAT were largely attenuated by either addition or elimination of acidic glycosphingolipids (AGSLs). Further study revealed that the ALP and trefoil factor (TFF) subunits of βγ-CAT bind to gangliosides and sulfatides, respectively. Additionally, disruption of lipid rafts largely impaired the actions of βγ-CAT. Finally, the ability of βγ-CAT to clear pathogens was attenuated in AGSL-eliminated frogs. These findings revealed a previously unknown double binding pattern of an animal-secreted ALP in complex with TFF that initiates ALP-induced endolysosomal pathway regulation, ultimately leading to effective antimicrobial responses.
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Affiliation(s)
- Xiao-Long Guo
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan, 650223, China
| | - Ling-Zhen Liu
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan, 650223, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, 650204, China
| | - Qi-Quan Wang
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan, 650223, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, 650204, China
| | - Jin-Yang Liang
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan, 650223, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, 650204, China
| | - Wen-Hui Lee
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan, 650223, China
| | - Yang Xiang
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan, 650223, China
| | - Sheng-An Li
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan, 650223, China.
| | - Yun Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan, 650223, China. .,Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming, Yunnan, 650223, China.
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26
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Wang F, Gómez-Sintes R, Boya P. Lysosomal membrane permeabilization and cell death. Traffic 2018; 19:918-931. [DOI: 10.1111/tra.12613] [Citation(s) in RCA: 198] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Revised: 08/15/2018] [Accepted: 08/15/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Fengjuan Wang
- Unit Biotechnology and Cell Signaling/Laboratory of Excellence Medalis, CNRS/Université de Strasbourg; Illkirch France
| | - Raquel Gómez-Sintes
- Departament of Cellular and Molecular Biology; Centro de Investigaciones Biológicas, CSIC; Madrid Spain
| | - Patricia Boya
- Departament of Cellular and Molecular Biology; Centro de Investigaciones Biológicas, CSIC; Madrid Spain
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27
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Gao ZH, Deng CJ, Xie YY, Guo XL, Wang QQ, Liu LZ, Lee WH, Li SA, Zhang Y. Pore‐forming toxin‐like protein complex expressed by frog promotes tissue repair. FASEB J 2018; 33:782-795. [DOI: 10.1096/fj.201800087r] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Zhen-Hua Gao
- Key Laboratory of Animal Models and Human Disease Mechanisms Kunming China
- Key Laboratory of Bioactive Peptides of Yunnan ProvinceKunming Institute of Zoology Kunming China
- Kunming College of Life ScienceUniversity of Chinese Academy of Sciences Kunming China
- First Affiliated Hospital of Kunming Medical University Kunming China
| | - Cheng-Jie Deng
- Key Laboratory of Animal Models and Human Disease Mechanisms Kunming China
- Key Laboratory of Bioactive Peptides of Yunnan ProvinceKunming Institute of Zoology Kunming China
- Kunming College of Life ScienceUniversity of Chinese Academy of Sciences Kunming China
| | - Yue-Ying Xie
- Key Laboratory of Animal Models and Human Disease Mechanisms Kunming China
- Kunming College of Life ScienceUniversity of Chinese Academy of Sciences Kunming China
| | - Xiao-Long Guo
- Key Laboratory of Animal Models and Human Disease Mechanisms Kunming China
- Kunming College of Life ScienceUniversity of Chinese Academy of Sciences Kunming China
| | - Qi-Quan Wang
- Key Laboratory of Animal Models and Human Disease Mechanisms Kunming China
- Key Laboratory of Bioactive Peptides of Yunnan ProvinceKunming Institute of Zoology Kunming China
- Kunming College of Life ScienceUniversity of Chinese Academy of Sciences Kunming China
| | - Ling-Zhen Liu
- Key Laboratory of Animal Models and Human Disease Mechanisms Kunming China
- Key Laboratory of Bioactive Peptides of Yunnan ProvinceKunming Institute of Zoology Kunming China
- Kunming College of Life ScienceUniversity of Chinese Academy of Sciences Kunming China
| | - Wen-Hui Lee
- Key Laboratory of Animal Models and Human Disease Mechanisms Kunming China
- Key Laboratory of Bioactive Peptides of Yunnan ProvinceKunming Institute of Zoology Kunming China
| | - Sheng-An Li
- Key Laboratory of Animal Models and Human Disease Mechanisms Kunming China
- Key Laboratory of Bioactive Peptides of Yunnan ProvinceKunming Institute of Zoology Kunming China
| | - Yun Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms Kunming China
- Key Laboratory of Bioactive Peptides of Yunnan ProvinceKunming Institute of Zoology Kunming China
- Center for Excellence in Animal Evolution and GeneticsChinese Academy of Sciences Kunming China
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28
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Chen LL, Xie J, Cao DD, Jia N, Li YJ, Sun H, Li WF, Hu B, Chen Y, Zhou CZ. The pore-forming protein Aep1 is an innate immune molecule that prevents zebrafish from bacterial infection. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2018; 82:49-54. [PMID: 29317232 DOI: 10.1016/j.dci.2018.01.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2017] [Revised: 01/06/2018] [Accepted: 01/06/2018] [Indexed: 06/07/2023]
Abstract
Following the Aeromonas hydrophila aerolysin, various aerolysin-like pore-forming proteins have been identified from bacteria to vertebrates. We have recently reported the mechanism of receptor recognition and in vitro pore-formation of a zebrafish aerolysin-like protein Dln1/Aep1. However, the physiological function of Aep1 remains unknown. Here we detected that aep1 gene is constitutively expressed in various immune-related tissues of adult zebrafish; and moreover, its expression is significantly up-regulated upon bacterial challenge, indicating its involvement in antimicrobial infection. Pre-injection of recombinant Aep1 into the infected zebrafish greatly accelerated the clearance of bacteria, resulting in significantly increased survival rate. Meanwhile, the induced expression of cytokines such as interleukin IL-1β and tumor necrosis factor TNF-α in zebrafish upon injection of recombinant Aep1 suggested that Aep1 may be a pro-inflammatory protein that triggers the antimicrobial immune responses. However, compared to the overproduction of these cytokines in the infected zebrafish, pre-injection of Aep1 could significantly reduce the expression level of these cytokines, accompanying with a reduced bacterial load. Moreover, the expression profiles through the developmental stages of zebrafish demonstrated that aep1 is activated at the very early stage prior to the maturation of adaptive immune system. Altogether, our findings proved that Aep1 is an innate immune molecule that prevents the bacterial infection.
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Affiliation(s)
- Lan-Lan Chen
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Science, University of Science and Technology of China, Hefei, Anhui 230027, China; Key Laboratory of Structural Biology, Chinese Academy of Science, Hefei, Anhui 230027, China
| | - Jin Xie
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Science, University of Science and Technology of China, Hefei, Anhui 230027, China; Key Laboratory of Structural Biology, Chinese Academy of Science, Hefei, Anhui 230027, China
| | - Dong-Dong Cao
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Science, University of Science and Technology of China, Hefei, Anhui 230027, China; Key Laboratory of Structural Biology, Chinese Academy of Science, Hefei, Anhui 230027, China
| | - Ning Jia
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Science, University of Science and Technology of China, Hefei, Anhui 230027, China; Key Laboratory of Structural Biology, Chinese Academy of Science, Hefei, Anhui 230027, China
| | - Ya-Juan Li
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Science, University of Science and Technology of China, Hefei, Anhui 230027, China; Chinese Academy of Sciences Key Laboratory of Brain Function and Disease, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui 230027, China
| | - Hui Sun
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Science, University of Science and Technology of China, Hefei, Anhui 230027, China; Key Laboratory of Structural Biology, Chinese Academy of Science, Hefei, Anhui 230027, China
| | - Wei-Fang Li
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Science, University of Science and Technology of China, Hefei, Anhui 230027, China; Key Laboratory of Structural Biology, Chinese Academy of Science, Hefei, Anhui 230027, China
| | - Bing Hu
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Science, University of Science and Technology of China, Hefei, Anhui 230027, China; Chinese Academy of Sciences Key Laboratory of Brain Function and Disease, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui 230027, China.
| | - Yuxing Chen
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Science, University of Science and Technology of China, Hefei, Anhui 230027, China; Key Laboratory of Structural Biology, Chinese Academy of Science, Hefei, Anhui 230027, China.
| | - Cong-Zhao Zhou
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Science, University of Science and Technology of China, Hefei, Anhui 230027, China; Key Laboratory of Structural Biology, Chinese Academy of Science, Hefei, Anhui 230027, China.
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Lysosomal membrane permeabilization as a cell death mechanism in cancer cells. Biochem Soc Trans 2018; 46:207-215. [DOI: 10.1042/bst20170130] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2017] [Revised: 01/12/2018] [Accepted: 01/15/2018] [Indexed: 12/11/2022]
Abstract
Lysosomes are acidic organelles that contain hydrolytic enzymes that mediate the intracellular degradation of macromolecules. Damage of these organelles often results in lysosomal membrane permeabilization (LMP) and the release into the cytoplasm of the soluble lysosomal contents, which include proteolytic enzymes of the cathepsin family. This, in turn, activates several intracellular cascades that promote a type of regulated cell death, called lysosome-dependent cell death (LDCD). LDCD can be inhibited by pharmacological or genetic blockade of cathepsin activity, or by protecting the lysosomal membrane, thereby stabilizing the organelle. Lysosomal alterations are common in cancer cells and may increase the sensitivity of these cells to agents that promote LMP. In this review, we summarize recent findings supporting the use of LDCD as a means of killing cancer cells.
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Xiang Y, Zhao MM, Sun S, Guo XL, Wang Q, Li SA, Lee WH, Zhang Y. A high concentration of DMSO activates caspase-1 by increasing the cell membrane permeability of potassium. Cytotechnology 2017; 70:313-320. [PMID: 28965287 DOI: 10.1007/s10616-017-0145-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 09/08/2017] [Indexed: 10/18/2022] Open
Abstract
Dimethyl sulfoxide (DMSO) is widely used in the laboratory and in clinical situations because it is soluble in both aqueous and organic media and can be used to treat many types of diseases. Thus, it is meaningful to assess the comprehensive and in-depth biological activities of DMSO. Here, we showed that a high concentration of DMSO induced pro-inflammatory cytokine interleukin-1β (IL-1β) secretion from the monocytic cell line THP-1. DMSO-induced IL-1β secretion was dependent on intracellular caspase-1 activation. Further study revealed that the activation of caspase-1 by DMSO relied on NLRP3 inflammasome formation. It is generally accepted that the NLRP3 inflammasome is activated by reactive oxygen species generation or potassium efflux; however, the common NLRP3 inflammasome trigger remains controversial. Here, we showed that although DMSO is a ROS scavenger, this chemical increases membrane permeability and potassium efflux, and the formation of the NLRP3 inflammasome reflects the increased membrane permeability and potassium efflux induced by DMSO. The present study reveals a new characteristic of DMSO, which should be considered when using this chemical in either the laboratory or the clinic.
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Affiliation(s)
- Yang Xiang
- Human Aging Research Institute and School of Life Sciences, Nanchang University, Nanchang, China. .,Key Laboratory of Animal Models and Human Disease Mechanisms, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, 650223, China.
| | - Ming-Ming Zhao
- Key Laboratory of Animal Models and Human Disease Mechanisms, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, 650223, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Sujiao Sun
- Medical Cosmetology Teaching and Research Section, Dali University School of Clinical Medicine, Jiashibo Road 32, Dali, Yunnan Province, 671000, China
| | - Xiao-Long Guo
- Key Laboratory of Animal Models and Human Disease Mechanisms, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, 650223, China
| | - Qiquan Wang
- Key Laboratory of Animal Models and Human Disease Mechanisms, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, 650223, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Sheng-An Li
- Key Laboratory of Animal Models and Human Disease Mechanisms, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, 650223, China
| | - Wen-Hui Lee
- Key Laboratory of Animal Models and Human Disease Mechanisms, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, 650223, China
| | - Yun Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, 650223, China.
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Li SA, Liu L, Guo XL, Zhang YY, Xiang Y, Wang QQ, Lee WH, Zhang Y. Host Pore-Forming Protein Complex Neutralizes the Acidification of Endocytic Organelles to Counteract Intracellular Pathogens. J Infect Dis 2017; 215:1753-1763. [DOI: 10.1093/infdis/jix183] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Accepted: 04/10/2017] [Indexed: 12/12/2022] Open
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Recent Progress in Research on the Pathogenesis of Pulmonary Thromboembolism: An Old Story with New Perspectives. BIOMED RESEARCH INTERNATIONAL 2017; 2017:6516791. [PMID: 28484717 PMCID: PMC5397627 DOI: 10.1155/2017/6516791] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 02/26/2017] [Accepted: 03/27/2017] [Indexed: 12/25/2022]
Abstract
Pulmonary thromboembolism (PTE) is part of a larger clinicopathological entity, venous thromboembolism. It is also a complex, multifactorial disorder divided into four major disease processes including venous thrombosis, thrombus in transit, acute pulmonary embolism, and pulmonary circulation reconstruction. Even when treated, some patients develop chronic thromboembolic pulmonary hypertension. PTE is also a common fatal type of pulmonary vascular disease worldwide, but earlier studies primarily focused on the pathological changes in the blood component of the disease. With contemporary advances in molecular and cellular biology, people are becoming increasingly aware of coagulation pathways, the function of vascular smooth muscle cells, microparticles, and the inflammatory pathways that play key roles in PTE. Combined hypoxia and immune research has revealed that PTE should be regarded as a class of complex diseases caused by multiple factors involving the vascular microenvironment and vascular cell dysfunction.
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Gómez-Sintes R, Ledesma MD, Boya P. Lysosomal cell death mechanisms in aging. Ageing Res Rev 2016; 32:150-168. [PMID: 26947122 DOI: 10.1016/j.arr.2016.02.009] [Citation(s) in RCA: 121] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2015] [Revised: 02/22/2016] [Accepted: 02/29/2016] [Indexed: 12/14/2022]
Abstract
Lysosomes are degradative organelles essential for cell homeostasis that regulate a variety of processes, from calcium signaling and nutrient responses to autophagic degradation of intracellular components. Lysosomal cell death is mediated by the lethal effects of cathepsins, which are released into the cytoplasm following lysosomal damage. This process of lysosomal membrane permeabilization and cathepsin release is observed in several physiopathological conditions and plays a role in tissue remodeling, the immune response to intracellular pathogens and neurodegenerative diseases. Many evidences indicate that aging strongly influences lysosomal activity by altering the physical and chemical properties of these organelles, rendering them more sensitive to stress. In this review we focus on how aging alters lysosomal function and increases cell sensitivity to lysosomal membrane permeabilization and lysosomal cell death, both in physiological conditions and age-related pathologies.
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Affiliation(s)
- Raquel Gómez-Sintes
- Department of Cellular and Molecular Biology, Centro de Investigaciones Biologicas, CIB-CSIC, C/Ramiro de Maeztu 9, 28040 Madrid, Spain
| | - María Dolores Ledesma
- Department of Molecular Neurobiology, Centro Biologia Molecular Severo Ochoa, CSIC-UAM, C/Nicolás Cabrera 1, 28049 Madrid, Spain
| | - Patricia Boya
- Department of Cellular and Molecular Biology, Centro de Investigaciones Biologicas, CIB-CSIC, C/Ramiro de Maeztu 9, 28040 Madrid, Spain.
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Liu LS, Zhao LY, Wang SH, Jiang JP. Research proceedings on amphibian model organisms. DONG WU XUE YAN JIU = ZOOLOGICAL RESEARCH 2016; 37:237-45. [PMID: 27469255 PMCID: PMC4980064 DOI: 10.13918/j.issn.2095-8137.2016.4.237] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Accepted: 06/10/2016] [Indexed: 12/26/2022]
Abstract
Model organisms have long been important in biology and medicine due to their specific characteristics. Amphibians, especially Xenopus, play key roles in answering fundamental questions on developmental biology, regeneration, genetics, and toxicology due to their large and abundant eggs, as well as their versatile embryos, which can be readily manipulated and developed in vivo. Furthermore, amphibians have also proven to be of considerable benefit in human disease research due to their conserved cellular developmental and genomic organization. This review gives a brief introduction on the progress and limitations of these animal models in biology and human disease research, and discusses the potential and challenge of Microhyla fissipes as a new model organism.
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Affiliation(s)
- Lu-Sha Liu
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Lan-Ying Zhao
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China;University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shou-Hong Wang
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China;University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jian-Ping Jiang
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China.
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35
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Yang X, Wang Y, Zhang Y, Lee WH, Zhang Y. Rich diversity and potency of skin antioxidant peptides revealed a novel molecular basis for high-altitude adaptation of amphibians. Sci Rep 2016; 6:19866. [PMID: 26813022 PMCID: PMC4728494 DOI: 10.1038/srep19866] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 12/18/2015] [Indexed: 12/20/2022] Open
Abstract
Elucidating the mechanisms of high-altitude adaptation is an important research area in modern biology. To date, however, knowledge has been limited to the genetic mechanisms of adaptation to the lower oxygen and temperature levels prevalent at high altitudes, with adaptation to UV radiation largely neglected. Furthermore, few proteomic or peptidomic analyses of these factors have been performed. In this study, the molecular adaptation of high-altitude Odorrana andersonii and cavernicolous O. wuchuanensis to elevated UV radiation was investigated. Compared with O. wuchuanensis, O. andersonii exhibited greater diversity and free radical scavenging potentiality of skin antioxidant peptides to cope with UV radiation. This implied that O. andersonii evolved a much more complicated and powerful skin antioxidant peptide system to survive high-altitude UV levels. Our results provided valuable peptidomic clues for understanding the novel molecular basis for adaptation to high elevation habitats.
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Affiliation(s)
- Xinwang Yang
- Key Laboratory of Animal Models and Human Disease Mechanisms, Chinese Academy of Sciences &Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, Yunnan, China.,Department of Anatomy and Histology &Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming 650500, China
| | - Ying Wang
- Key Laboratory of Chemistry in Ethnic Medicine Resource, State Ethnic Affairs Commission &Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming 650500, China
| | - Yue Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms, Chinese Academy of Sciences &Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, Yunnan, China
| | - Wen-Hui Lee
- Key Laboratory of Animal Models and Human Disease Mechanisms, Chinese Academy of Sciences &Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, Yunnan, China
| | - Yun Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms, Chinese Academy of Sciences &Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, Yunnan, China
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Jia N, Liu N, Cheng W, Jiang YL, Sun H, Chen LL, Peng J, Zhang Y, Ding YH, Zhang ZH, Wang X, Cai G, Wang J, Dong MQ, Zhang Z, Wu H, Wang HW, Chen Y, Zhou CZ. Structural basis for receptor recognition and pore formation of a zebrafish aerolysin-like protein. EMBO Rep 2015; 17:235-48. [PMID: 26711430 DOI: 10.15252/embr.201540851] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 11/24/2015] [Indexed: 12/31/2022] Open
Abstract
Various aerolysin-like pore-forming proteins have been identified from bacteria to vertebrates. However, the mechanism of receptor recognition and/or pore formation of the eukaryotic members remains unknown. Here, we present the first crystal and electron microscopy structures of a vertebrate aerolysin-like protein from Danio rerio, termed Dln1, before and after pore formation. Each subunit of Dln1 dimer comprises a β-prism lectin module followed by an aerolysin module. Specific binding of the lectin module toward high-mannose glycans triggers drastic conformational changes of the aerolysin module in a pH-dependent manner, ultimately resulting in the formation of a membrane-bound octameric pore. Structural analyses combined with computational simulations and biochemical assays suggest a pore-forming process with an activation mechanism distinct from the previously characterized bacterial members. Moreover, Dln1 and its homologs are ubiquitously distributed in bony fishes and lamprey, suggesting a novel fish-specific defense molecule.
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Affiliation(s)
- Ning Jia
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Nan Liu
- Ministry of Education Key Laboratory of Protein Science, Tsinghua-Peking Joint Center for Life Sciences, Center for Structural Biology, School of Life Sciences, Tsinghua University, Beijing, China
| | - Wang Cheng
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Yong-Liang Jiang
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Hui Sun
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Lan-Lan Chen
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Junhui Peng
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Yonghui Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Yue-He Ding
- National Institute of Biological Sciences, Beijing, China
| | - Zhi-Hui Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Xuejuan Wang
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Gang Cai
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Junfeng Wang
- High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China
| | - Meng-Qiu Dong
- National Institute of Biological Sciences, Beijing, China
| | - Zhiyong Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Hui Wu
- Departments of Microbiology and Pediatric Dentistry, Schools of Dentistry and Medicine University of Alabama at Birmingham, Birmingham, AL, USA
| | - Hong-Wei Wang
- Ministry of Education Key Laboratory of Protein Science, Tsinghua-Peking Joint Center for Life Sciences, Center for Structural Biology, School of Life Sciences, Tsinghua University, Beijing, China
| | - Yuxing Chen
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Cong-Zhao Zhou
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, China
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Peraro MD, van der Goot FG. Pore-forming toxins: ancient, but never really out of fashion. Nat Rev Microbiol 2015; 14:77-92. [DOI: 10.1038/nrmicro.2015.3] [Citation(s) in RCA: 476] [Impact Index Per Article: 52.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Greaney AJ, Leppla SH, Moayeri M. Bacterial Exotoxins and the Inflammasome. Front Immunol 2015; 6:570. [PMID: 26617605 PMCID: PMC4639612 DOI: 10.3389/fimmu.2015.00570] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 10/26/2015] [Indexed: 11/24/2022] Open
Abstract
The inflammasomes are intracellular protein complexes that play an important role in innate immune sensing. Activation of inflammasomes leads to activation of caspase-1 and maturation and secretion of the pro-inflammatory cytokines interleukin (IL)-1β and IL-18. In certain myeloid cells, this activation can also lead to an inflammatory cell death (pyroptosis). Inflammasome sensor proteins have evolved to detect a range of microbial ligands and bacterial exotoxins either through direct interaction or by detection of host cell changes elicited by these effectors. Bacterial exotoxins activate the inflammasomes through diverse processes, including direct sensor cleavage, modulation of ion fluxes through plasma membrane pore formation, and perturbation of various host cell functions. In this review, we summarize the findings on some of the bacterial exotoxins that activate the inflammasomes.
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Affiliation(s)
- Allison J Greaney
- Microbial Pathogenesis Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health , Bethesda, MD , USA
| | - Stephen H Leppla
- Microbial Pathogenesis Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health , Bethesda, MD , USA
| | - Mahtab Moayeri
- Microbial Pathogenesis Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health , Bethesda, MD , USA
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Juntapremjit S, Thamwiriyasati N, Kurehong C, Prangkio P, Shank L, Powthongchin B, Angsuthanasombat C. Functional importance of the Gly cluster in transmembrane helix 2 of the Bordetella pertussis CyaA-hemolysin: Implications for toxin oligomerization and pore formation. Toxicon 2015; 106:14-9. [DOI: 10.1016/j.toxicon.2015.09.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 08/07/2015] [Accepted: 09/07/2015] [Indexed: 10/23/2022]
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40
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Zhang Y. Why do we study animal toxins? DONG WU XUE YAN JIU = ZOOLOGICAL RESEARCH 2015; 36:183-222. [PMID: 26228472 PMCID: PMC4790257 DOI: 10.13918/j.issn.2095-8137.2015.4.183] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Accepted: 04/25/2015] [Indexed: 12/31/2022]
Abstract
Venom (toxins) is an important trait evolved along the evolutionary tree of animals. Our knowledges on venoms, such as their origins and loss, the biological relevance and the coevolutionary patterns with other organisms are greatly helpful in understanding many fundamental biological questions, i.e., the environmental adaptation and survival competition, the evolution shaped development and balance of venoms, and the sophisticated correlations among venom, immunity, body power, intelligence, their genetic basis, inherent association, as well as the cost-benefit and trade-offs of biological economy. Lethal animal envenomation can be found worldwide. However, from foe to friend, toxin studies have led lots of important discoveries and exciting avenues in deciphering and fighting human diseases, including the works awarded the Nobel Prize and lots of key clinic therapeutics. According to our survey, so far, only less than 0.1% of the toxins of the venomous animals in China have been explored. We emphasize on the similarities shared by venom and immune systems, as well as the studies of toxin knowledge-based physiological toxin-like proteins/peptides (TLPs). We propose the natural pairing hypothesis. Evolution links toxins with humans. Our mission is to find out the right natural pairings and interactions of our body elements with toxins, and with endogenous toxin-like molecules. Although, in nature, toxins may endanger human lives, but from a philosophical point of view, knowing them well is an effective way to better understand ourselves. So, this is why we study toxins.
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Affiliation(s)
- Yun Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms of The Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming Yunnan 650223,
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Overexpression of Porcine Beta-Defensin 2 Enhances Resistance to Actinobacillus pleuropneumoniae Infection in Pigs. Infect Immun 2015; 83:2836-43. [PMID: 25916992 DOI: 10.1128/iai.03101-14] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 04/24/2015] [Indexed: 01/01/2023] Open
Abstract
To reduce the need for antibiotics in animal production, alternative approaches are needed to control infection. We hypothesized that overexpression of native defensin genes will provide food animals with enhanced resistance to bacterial infections. In this study, recombinant porcine beta-defensin 2 (PBD-2) was overexpressed in stably transfected PK-15 porcine kidney cells. PBD-2 antibacterial activities against Actinobacillus pleuropneumoniae, an important respiratory pathogen causing porcine contagious pleuropneumonia, were evaluated on agar plates. Transgenic pigs constitutively overexpressing PBD-2 were produced by a somatic cell cloning method, and their resistance to bacterial infection was evaluated by direct or cohabitation infection with A. pleuropneumoniae. Recombinant PBD-2 peptide that was overexpressed in the PK-15 cells showed antibacterial activity against A. pleuropneumoniae. PBD-2 was overexpressed in the heart, liver, spleen, lungs, kidneys, and jejunum of the transgenic pigs, which showed significantly lower bacterial loads in the lungs and reduced lung lesions after direct or cohabitation infection with A. pleuropneumoniae. The results demonstrate that transgenic overexpression of PBD-2 in pigs confers enhanced resistance against A. pleuropneumoniae infection.
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