1
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Yu T, Sun Z, Cao X, Yang F, Pang Q, Deng H. Identification and characterization of TatD DNase in planarian Dugesia japonica and its antibiofilm effect. ENVIRONMENTAL RESEARCH 2024; 251:118534. [PMID: 38395336 DOI: 10.1016/j.envres.2024.118534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 02/19/2024] [Accepted: 02/20/2024] [Indexed: 02/25/2024]
Abstract
TatD DNase, a key enzyme in vertebrates and invertebrates, plays a pivotal role in various physiological processes. Dugesia japonica (D. japonica), a flatworm species, has remarkable regenerative capabilities and possesses a simplified immune system. However, the existence and biological functions of TatD DNase in D. japonica require further investigation. Here, we obtained the open reading frame (ORF) of DjTatD and demonstrated its conservation. The three-dimensional structure of DjTatD revealed its active site and binding mechanism. To investigate its enzymological properties, we overexpressed, purified, and characterized recombinant DjTatD (rDjTatD). We observed that DjTatD was primarily expressed in the pharynx and its expression could be significantly challenged upon stimulation with lipopolysaccharide, peptidoglycan, gram-positive and gram-negative bacteria. RNA interference results indicated that both DjTatD and DjDN2s play a role in pharyngeal regeneration and may serve as functional complements to each other. Additionally, we found that rDjTatD and recombinant T7DjTatD effectively reduce biofilm formation regardless of their bacterial origin. Together, our results demonstrated that DjTatD may be involved in the planarian immune response and pharyngeal regeneration. Furthermore, after further optimization in the future, rDjTatD and T7DjTatD can be considered highly effective antibiofilm agents.
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Affiliation(s)
- Tong Yu
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, 255000, China
| | - Zhe Sun
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, 255000, China
| | - Xiangyu Cao
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, 255000, China
| | - Fengtang Yang
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, 255000, China.
| | - Qiuxiang Pang
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, 255000, China.
| | - Hongkuan Deng
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, 255000, China; Shandong Jiuyi Biotechnology Co., Ltd, Zibo, 255000, China.
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2
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Arinda BN, Innabi YA, Grasis JA, Oviedo NJ. Non-traditional roles of immune cells in regeneration: an evolutionary perspective. Development 2022; 149:275269. [PMID: 35502784 PMCID: PMC9124569 DOI: 10.1242/dev.199903] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Immune cells are known to engage in pathogen defense. However, emerging research has revealed additional roles for immune cells, which are independent of their function in the immune response. Here, we underscore the ability of cells outside of the adaptive immune system to respond to recurring infections through the lens of evolution and cellular memory. With this in mind, we then discuss the bidirectional crosstalk between the immune cells and stem cells and present examples where these interactions regulate tissue repair and regeneration. We conclude by suggesting that comprehensive analyses of the immune system may enable biomedical applications in stem cell biology and regenerative medicine.
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Affiliation(s)
- Beryl N Arinda
- Department of Molecular and Cell Biology, University of California, Merced, CA 95343, USA.,Quantitative and Systems Biology Graduate Program, University of California, Merced, CA 95343, USA
| | - Yacoub A Innabi
- Department of Molecular and Cell Biology, University of California, Merced, CA 95343, USA.,Quantitative and Systems Biology Graduate Program, University of California, Merced, CA 95343, USA
| | - Juris A Grasis
- Department of Molecular and Cell Biology, University of California, Merced, CA 95343, USA.,Health Sciences Research Institute, University of California, Merced, CA 95343, USA
| | - Néstor J Oviedo
- Department of Molecular and Cell Biology, University of California, Merced, CA 95343, USA.,Health Sciences Research Institute, University of California, Merced, CA 95343, USA
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3
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Shi Y, Yao G, Zhang H, Jia H, Xiong P, He M. Proteome and Transcriptome Analysis of Gonads Reveals Intersex in Gigantidas haimaensis. BMC Genomics 2022; 23:174. [PMID: 35240981 PMCID: PMC8892766 DOI: 10.1186/s12864-022-08407-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 02/22/2022] [Indexed: 11/19/2022] Open
Abstract
Sex has proven to be one of the most intriguing areas of research across evolution, development, and ecology. Intersex or sex change occurs frequently in molluscs. The deep-sea mussel Gigantidas haimaensis often dominates within Haima cold seep ecosystems, but details of their reproduction remain unknown. Herein, we conducted a combined proteomic and transcriptomic analysis of G. haimaensis gonads to provide a systematic understanding of sexual development in deep-sea bivalves. A total of 2,452 out of 42,238 genes (5.81%) and 288 out of 7,089 proteins (4.06%) were significantly differentially expressed between ovaries and testes with a false discovery rate (FDR) <0.05. Candidate genes involved in sexual development were identified; among 12 differentially expressed genes between sexes, four ovary-biased genes (β-catenin, fem-1, forkhead box L2 and membrane progestin receptor α) were expressed significantly higher in males than females. Combining histological characteristics, we speculate that the males maybe intersex undergoing sex change, and implied that these genes may be involved in the process of male testis converting into female gonads in G. haimaensis. The results suggest that this adaptation may be based on local environmental factors, sedentary lifestyles, and patchy distribution, and sex change may facilitate adaptation to a changing environment and expansion of the population. The findings provide a valuable genetic resource to better understand the mechanisms of sex change and survival strategies in deep-sea bivalves.
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Affiliation(s)
- Yu Shi
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, China.,Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, 511458, China
| | - Gaoyou Yao
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Hua Zhang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, China.,Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, 511458, China
| | - Huixia Jia
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Panpan Xiong
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Maoxian He
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, China. .,Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, 511458, China.
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4
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Lee H, Hikasa K, Umesono Y, Hayashi T, Agata K, Shibata N. Loss of plac8 expression rapidly leads pluripotent stem cells to enter active state during planarian regeneration. Development 2022; 149:274215. [DOI: 10.1242/dev.199449] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 12/20/2021] [Indexed: 01/18/2023]
Abstract
ABSTRACT
The regenerative ability of planarians relies on their adult pluripotent stem cell population. Although all stem cells express a piwi homolog, recently it has become possible to classify the piwi+ stem cell population into specialized subpopulations according to the expression of genes related to differentiation. However, piwi+ stem cells behave practically as a homogeneous population after amputation, during which stem cells show accelerated proliferation, named ‘induced hyperproliferation’. Here, we show that plac8-A was expressed in almost all of the stem cells, and that a decrease of the plac8-A expression level led to induced hyperproliferation uniformly in a broad stem cell subpopulation after amputation. This reduction of plac8-A expression was caused by activated JNK signaling after amputation. Pharmacological inhibition of JNK signaling caused failure to induce hyperproliferation and resulted in regenerative defects. Such defects were abrogated by simultaneous knockdown of plac8-A expression. Thus, JNK-dependent suppression of plac8-A expression is indispensable for stem cell dynamics involved in regeneration. These findings suggest that plac8-A acts as a molecular switch of piwi+ stem cells for entry into the regenerative state after amputation.
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Affiliation(s)
- Hayoung Lee
- Department of Biophysics, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwake, Sakyo-ku, Kyoto 606-8502, Japan
| | - Kanon Hikasa
- Department of Integrated Science and Technology, National Institute of Technology, Tsuyama College 624-1, Numa, Tsuyama-City, Okayama 708-8509, Japan
| | - Yoshihiko Umesono
- Department of Biophysics, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwake, Sakyo-ku, Kyoto 606-8502, Japan
| | - Tetsutaro Hayashi
- Laboratory for Phyloinformatics, RIKEN Center for Biosystems Dynamics Research, 2-2-3 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
- Laboratory for Bioinformatics Research, RIKEN Center for Biosystems Dynamics Research, 2-2-3 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Kiyokazu Agata
- Department of Biophysics, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwake, Sakyo-ku, Kyoto 606-8502, Japan
- Laboratory of Regeneration Biology, National Institute for Basic Biology, Nishigoaka 38, Myodaiji, Okazaki, 444-8585 Aichi, Japan
| | - Norito Shibata
- Department of Biophysics, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwake, Sakyo-ku, Kyoto 606-8502, Japan
- Department of Integrated Science and Technology, National Institute of Technology, Tsuyama College 624-1, Numa, Tsuyama-City, Okayama 708-8509, Japan
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5
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Mao M, Cheng Y, Yang J, Chen Y, Xu L, Zhang X, Li Z, Chen C, Ju S, Zhou J, Wang L. Multifaced roles of PLAC8 in cancer. Biomark Res 2021; 9:73. [PMID: 34627411 PMCID: PMC8501656 DOI: 10.1186/s40364-021-00329-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 09/20/2021] [Indexed: 12/21/2022] Open
Abstract
The role of PLAC8 in tumorigenesis has been gradually elucidated with the development of research. Although there are common molecular mechanisms that enforce cell growth, the impact of PLAC8 is varied and can, in some instances, have opposite effects on tumorigenesis. To systematically understand the role of PLAC8 in tumors, the molecular functions of PLAC8 in cancer will be discussed by focusing on how PLAC8 impacts tumorigenesis when it arises within tumor cells and how these roles can change in different stages of cancer progression with the ultimate goal of suppressing PLAC8-relevant cancer behavior and related pathologies. In addition, we highlight the diversity of PLAC8 in different tumors and its functional output beyond cancer cell growth. The comprehension of PLAC8's molecular function might provide new target and lead to the development of novel anticancer therapies.
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Affiliation(s)
- Misha Mao
- Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University, Zhejiang, 310000, Hangzhou, China.,Biomedical Research Center and Key Laboratory of Biotherapy of Zhejiang Province, Zhejiang, 310000, Hangzhou, China
| | - Yifan Cheng
- Department of Gastrointestinal Surgery, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Taizhou, Zhejiang, 318000, People's Republic of China
| | - Jingjing Yang
- Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University, Zhejiang, 310000, Hangzhou, China.,Biomedical Research Center and Key Laboratory of Biotherapy of Zhejiang Province, Zhejiang, 310000, Hangzhou, China
| | - Yongxia Chen
- Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University, Zhejiang, 310000, Hangzhou, China.,Biomedical Research Center and Key Laboratory of Biotherapy of Zhejiang Province, Zhejiang, 310000, Hangzhou, China
| | - Ling Xu
- Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University, Zhejiang, 310000, Hangzhou, China.,Biomedical Research Center and Key Laboratory of Biotherapy of Zhejiang Province, Zhejiang, 310000, Hangzhou, China
| | - Xun Zhang
- Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University, Zhejiang, 310000, Hangzhou, China.,Biomedical Research Center and Key Laboratory of Biotherapy of Zhejiang Province, Zhejiang, 310000, Hangzhou, China
| | - Zhaoqing Li
- Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University, Zhejiang, 310000, Hangzhou, China.,Biomedical Research Center and Key Laboratory of Biotherapy of Zhejiang Province, Zhejiang, 310000, Hangzhou, China
| | - Cong Chen
- Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University, Zhejiang, 310000, Hangzhou, China.,Biomedical Research Center and Key Laboratory of Biotherapy of Zhejiang Province, Zhejiang, 310000, Hangzhou, China
| | - Siwei Ju
- Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University, Zhejiang, 310000, Hangzhou, China.,Biomedical Research Center and Key Laboratory of Biotherapy of Zhejiang Province, Zhejiang, 310000, Hangzhou, China
| | - Jichun Zhou
- Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University, Zhejiang, 310000, Hangzhou, China. .,Biomedical Research Center and Key Laboratory of Biotherapy of Zhejiang Province, Zhejiang, 310000, Hangzhou, China.
| | - Linbo Wang
- Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University, Zhejiang, 310000, Hangzhou, China. .,Biomedical Research Center and Key Laboratory of Biotherapy of Zhejiang Province, Zhejiang, 310000, Hangzhou, China.
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6
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Gao L, Li A, Lv Y, Huang M, Liu X, Deng H, Liu D, Zhao B, Liu B, Pang Q. Planarian gamma-interferon-inducible lysosomal thiol reductase (GILT) is required for gram-negative bacterial clearance. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2021; 116:103914. [PMID: 33137392 DOI: 10.1016/j.dci.2020.103914] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 10/27/2020] [Accepted: 10/27/2020] [Indexed: 06/11/2023]
Abstract
The powerful regenerative ability of planarians has long been a concern of scientists, but recently, their efficient immune system has attracted more and more attention from researchers. Gamma-interferon-inducible lysosomal thiol reductase (GILT) is related not only to antigen presentation but also to bacteria invasions. But the systematic studies are not yet to be conducted on the relationship between bacterial infection. Our study reveals for the first time that GILT of planarian (DjGILT) plays an essential role in the clearance of Gram-negative bacteria by conducting H2O2 concentration in planarians. In animals that DjGILT was silenced, it persisted for up to 9 days before all bacteria were cleared, compared with 6 days of the control group. When infected with E. coli and V. anguillarum, the level of H2O2 was significantly increased in DjGILT-silenced planarians, and concomitantly, mRNA level of C-type lectin DjCTL, which modulates agglutination and clearance efficiency of invading bacteria, was decreased. Further study showed that the decrease of H2O2 level led to a significant increase in DjCTL transcripts. Collectively, we proposed a mechanism model for the involvement of GILT gene in bacterial elimination. We have for the first time revealed the specific mechanism of GILT in innate immune response against bacterial infection.
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Affiliation(s)
- Lili Gao
- Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, 255049, China; Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo, 255049, PR China
| | - Ao Li
- Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, 255049, China
| | - Yanhua Lv
- Department of Gynecology, Affiliated Hospital of Jining Medical University, Jining, Shandong, 272000, China
| | - Mujie Huang
- Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, 255049, China
| | - Xi Liu
- Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, 255049, China
| | - Hongkuan Deng
- Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, 255049, China; Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo, 255049, PR China
| | - Dongwu Liu
- Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, 255049, China
| | - Bosheng Zhao
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo, 255049, PR China
| | - Baohua Liu
- Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, 255049, China; Shenzhen University of Health Science Center, District Shenzhen, 518060, China.
| | - Qiuxiang Pang
- Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, 255049, China; Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo, 255049, PR China.
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7
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Kangale LJ, Raoult D, Fournier PE, Abnave P, Ghigo E. Planarians (Platyhelminthes)-An Emerging Model Organism for Investigating Innate Immune Mechanisms. Front Cell Infect Microbiol 2021; 11:619081. [PMID: 33732660 PMCID: PMC7958881 DOI: 10.3389/fcimb.2021.619081] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 01/18/2021] [Indexed: 12/15/2022] Open
Abstract
An organism responds to the invading pathogens such as bacteria, viruses, protozoans, and fungi by engaging innate and adaptive immune system, which functions by activating various signal transduction pathways. As invertebrate organisms (such as sponges, worms, cnidarians, molluscs, crustaceans, insects, and echinoderms) are devoid of an adaptive immune system, and their defense mechanisms solely rely on innate immune system components. Investigating the immune response in such organisms helps to elucidate the immune mechanisms that vertebrates have inherited or evolved from invertebrates. Planarians are non-parasitic invertebrates from the phylum Platyhelminthes and are being investigated for several decades for understanding the whole-body regeneration process. However, recent findings have emerged planarians as a useful model for studying innate immunity as they are resistant to a broad spectrum of bacteria. This review intends to highlight the research findings on various antimicrobial resistance genes, signaling pathways involved in innate immune recognition, immune-related memory and immune cells in planarian flatworms.
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Affiliation(s)
- Luis Johnson Kangale
- Aix-Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France.,Institut Hospitalo-Universitaire-Méditerranée-Infection, Marseille, France
| | - Didier Raoult
- Institut Hospitalo-Universitaire-Méditerranée-Infection, Marseille, France.,Aix-Marseille Univ, IRD, AP-HM, MEPHI, Marseille, France.,Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Pierre-Edouard Fournier
- Aix-Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France.,Institut Hospitalo-Universitaire-Méditerranée-Infection, Marseille, France
| | | | - Eric Ghigo
- Institut Hospitalo-Universitaire-Méditerranée-Infection, Marseille, France.,TechnoJouvence, Marseille, France
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8
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Yang Y, Dong F, Liu X, Xu J, Wu X, Zheng Y. Thifluzamide induces the toxic effects on zebrafish (Danio rerio) via inhibition of succinate dehydrogenase (SDH). ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 265:115031. [PMID: 32806454 DOI: 10.1016/j.envpol.2020.115031] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 05/16/2020] [Accepted: 06/12/2020] [Indexed: 06/11/2023]
Abstract
Thifluzamide is widely used in treatment of rice diseases and has potential toxicity on aquatic organism. Although previous studies have focused on the toxic effect of thifluzamide in zebrafish, no consistent conclusions have been reached. To help to elucidate the toxic mechanism, qualities of liver and mitochondria were evaluated. The global changes in the transcriptome of zebrafish after exposure to thifluzamide were measured. Based on this, the expression and activities of chitinase and succinate dehydrogenase (SDH) were further assayed. And the targeted site of thifluzamide in zebrafish was confirmed by dock study and co-exposure study. Here we report that developmental inhibition was observed along with presence of liver and mitochondrial damage. The expression of SDHa-d and genes related to mitochondrial DNA (mtDNA) replicate and mitochondrial complexes were significantly altered. And, as the top differentially expressed genes, the expression of chia.1-6 did show apparent changes, but differences of chitinase activity between exposure groups and the controls did not reach significance. In line with that, dock study showed that the binding potentials of thifluzamide toward zebrafish chitinase and SDH exhibited in the following order: SDH> chitinase. And sdhb-sdhc-sdhd (Qp site) showed the highest binding activity toward thifluzamide. The joint exposure (thifluzamide + Q10) significantly improved the survival of zebrafish compared with single thifluzamide exposure. These results indicate that SDH, especially Qp-site, may be the target of thifluzamide in zebrafish and inhibition of SDH activity may be at least in partial responsible for the toxicity of thifluzamide in zebrafish. In addition, the antagonistic effect of Q10 on thifluzamide toxicity in zebrafish suggests that Q10 may be a useful adjunct to detoxification.
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Affiliation(s)
- Yang Yang
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China
| | - Fengshou Dong
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China
| | - Xingang Liu
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China
| | - Jun Xu
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China
| | - Xiaohu Wu
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China
| | - Yongquan Zheng
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China.
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9
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Gong K, Gong ZJ, Lu PX, Ni XL, Shen S, Liu H, Wang JW, Zhang DX, Liu HB, Suo T. PLAC8 overexpression correlates with PD-L1 upregulation and acquired resistance to chemotherapies in gallbladder carcinoma. Biochem Biophys Res Commun 2019; 516:983-990. [PMID: 31272718 DOI: 10.1016/j.bbrc.2019.06.121] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Accepted: 06/21/2019] [Indexed: 01/19/2023]
Abstract
Gallbladder carcinoma (GBC) is always diagnosed at an advanced stage, and patients often miss the opportunity for surgery. Gemcitabine (GEM) and platinum-based drugs, including oxaliplatin (OXA), are mainstays of chemotherapy. However, drug resistance causes treatment failure. Hence, salvage mechanisms are critical to improve outcomes. This study revealed the positive correlation between placenta-specific protein 8 (PLAC8) overexpression and PD-L1 overexpression in GBC. Given the roles of PLAC8 and PD-L1 in chemotherapy resistance, GEM-resistant and OXA-resistant cell lines (SGC966GR and SGC966OR, respectively) were established to test whether and how PLAC8 and PD-L1 function in chemotherapy resistance. Drug-insensitive SGC966GR and SGC966OR cells upregulated MRP and MDR1 and had high expression of PLAC8. PLAC8 blockade using siRNA reversed chemotherapy resistance and downregulated MRP and MDR1 in SGC966GR and SGC966OR cells, suggesting that PLAC8 mediates chemotherapy resistance in GBC. Consistent with the increased mRNA levels of PD-L1 after the acquisition of resistance, PLAC8 knockdown reduced PD-L1 mRNA expression in SGC966GR and SGC966OR cells. In conclusion, PLAC8 overexpression in GBC patients positively correlated with PD-L1 expression. PLAC8 conferred resistance to GEM and OXA by upregulating PD-L1 expression, and PLAC8 or PD-L1 blockade may have potential for overcoming chemotherapy resistance, providing therapeutic options for chemotherapy-refractory GBC patients.
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Affiliation(s)
- Ke Gong
- General Surgery Department, Zhongshan Hospital, Biliary Tract Diseases Institute, Fudan University, Shanghai, 200032, China
| | - Zi-Jun Gong
- General Surgery Department, Zhongshan Hospital, Biliary Tract Diseases Institute, Fudan University, Shanghai, 200032, China
| | - Pin-Xiang Lu
- General Surgery Department, Zhongshan-Xuhui Hospital Affiliated to Fudan University, Shanghai, 200031, China
| | - Xiao-Ling Ni
- General Surgery Department, Zhongshan Hospital, Biliary Tract Diseases Institute, Fudan University, Shanghai, 200032, China
| | - Sheng Shen
- General Surgery Department, Zhongshan Hospital, Biliary Tract Diseases Institute, Fudan University, Shanghai, 200032, China
| | - Han Liu
- General Surgery Department, Zhongshan Hospital, Biliary Tract Diseases Institute, Fudan University, Shanghai, 200032, China
| | - Ji-Wen Wang
- General Surgery Department, Zhongshan Hospital, Biliary Tract Diseases Institute, Fudan University, Shanghai, 200032, China
| | - De-Xiang Zhang
- General Surgery Department, Zhongshan-Xuhui Hospital Affiliated to Fudan University, Shanghai, 200031, China
| | - Hou-Bao Liu
- General Surgery Department, Zhongshan Hospital, Biliary Tract Diseases Institute, Fudan University, Shanghai, 200032, China; General Surgery Department, Zhongshan-Xuhui Hospital Affiliated to Fudan University, Shanghai, 200031, China.
| | - Tao Suo
- General Surgery Department, Zhongshan Hospital, Biliary Tract Diseases Institute, Fudan University, Shanghai, 200032, China.
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10
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Li N, Li A, Zheng K, Liu X, Gao L, Liu D, Deng H, Wu W, Liu B, Zhao B, Pang Q. Identification and characterization of an atypical RIG-I encoded by planarian Dugesia japonica and its essential role in the immune response. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2019; 91:72-84. [PMID: 30355517 DOI: 10.1016/j.dci.2018.10.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Revised: 10/19/2018] [Accepted: 10/19/2018] [Indexed: 06/08/2023]
Abstract
Retinoic acid-inducible gene I (RIG-I), an RNA sensor with a conserved structure, activates the host interferon (IFN) system to produce IFNs and cytokines for eliminating pathogens upon recognizing PAMPs. However, the biological functions and the mechanism by which RIG-I regulates the innate immunity response in invertebrates are still unknown at present. Here we identified an atypical RIG-I in planarian Dugesia japonica. Sequence analysis, 3D structure modeling and phylogenetic analysis showed that this atypical protein was clustered into a single clade at the base of the tree in invertebrates, suggesting that DjRIG-I is an ancient and unique protein of the RIG-I-like receptors (RLRs). In situ hybridization analysis revealed that the DjRIG-I mRNAs were predominantly expressed in the pharynx and head of the adult and regenerative planarians. Stimulation with PAMPs induced the over-expression of DjRIG-I in planarians. The molecular simulation demonstrated that DjRIG-I formed a large hole-structure for the docking of dsRNAs, and the pull-down assay confirmed the interaction between DjRIG-I and viral analog poly(I:C). Importantly, some representative antiviral/antibacterial genes in the RIG-I-mediated IFN and P38 signaling pathway, TBK1, IRF-3, Mx, and P38, were significantly upregulated in planarians stimulated with PAMPs. Interference of the DjRIG-I expression by RNAi, inhibited the PAMPs-induced over-expression, suggesting that DjRIG-I is a key player for downstream signaling events. These results indicate that DjRIG-I triggered the intracellular signaling cascades independent of the classical CARD domains and played an essential role in the virus/bacteria-induced innate immunity of planarian.
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Affiliation(s)
- Na Li
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, 255049, China
| | - Ao Li
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, 255049, China
| | - Kang Zheng
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, 255049, China
| | - Xi Liu
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, 255049, China
| | - Lili Gao
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, 255049, China
| | - Dongwu Liu
- Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, 255049, China
| | - Hongkuan Deng
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, 255049, China
| | - Weiwei Wu
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, 255049, China
| | - Baohua Liu
- Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, 255049, China; Shenzhen University of Health Science Center, Shenzhen, Guangdong, 518060, China
| | - Bosheng Zhao
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, 255049, China
| | - Qiuxiang Pang
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, 255049, China.
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Lee FJ, Williams KB, Levin M, Wolfe BE. The Bacterial Metabolite Indole Inhibits Regeneration of the Planarian Flatworm Dugesia japonica. iScience 2018; 10:135-148. [PMID: 30521984 PMCID: PMC6280633 DOI: 10.1016/j.isci.2018.11.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 10/31/2018] [Accepted: 11/12/2018] [Indexed: 02/07/2023] Open
Abstract
Planarian flatworms have been used for over a century as models for regeneration. Planarians live in aquatic environments with constant exposure to microbes, but the mechanisms by which bacteria may mediate planarian regeneration are largely unknown. We characterized the microbiome of laboratory populations of the planarian Dugesia japonica and determined how individual bacteria impact D. japonica regeneration. Eight to ten taxa in the phyla Bacteroidetes and Proteobacteria consistently occur across planarian colonies housed in different research laboratories. Individual members of the D. japonica microbiome can delay regeneration including the development of eye spots and blastema formation. The microbial metabolite indole is produced in significant quantities by two bacteria that are consistently found in the D. japonica microbiome and contributes to delays in regeneration. Collectively, these results provide a baseline understanding of the bacteria associated with the planarian D. japonica and demonstrate how metabolite production by host-associated microbes can affect regeneration. The planarian worm Dugesia japonica is colonized by Bacteroidetes and Proteobacteria Many of these bacteria can be cultured and experimentally manipulated Some bacteria can inhibit regeneration, including eye and blastema formation Indole produced by planarian-associated bacteria contributes to regeneration delays
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Affiliation(s)
- Fredrick J Lee
- Allen Discovery Center at Tufts University, Medford, MA 02155, USA.
| | | | - Michael Levin
- Allen Discovery Center at Tufts University, Medford, MA 02155, USA; Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Benjamin E Wolfe
- Allen Discovery Center at Tufts University, Medford, MA 02155, USA.
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12
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Hu W, Wu W, Sun S, Liu Z, Li A, Gao L, Liu X, Liu D, Deng H, Zhao B, Liu B, Pang Q. Identification and characterization of a TNF receptor-associated factor in Dugesia japonica. Gene 2018; 681:52-61. [PMID: 30267808 DOI: 10.1016/j.gene.2018.09.038] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Revised: 09/03/2018] [Accepted: 09/21/2018] [Indexed: 12/25/2022]
Abstract
The tumor necrosis factor (TNF) superfamily consists of a wide variety of inflammatory cytokine, including cell-bound and secreted proteins. These TNFs function through binding and activation of the TNF receptors for modulating TNF-associated intracellular signals. A set of mammalian TNF receptor-associated factors (TRAFs) that have emerged as the major signal transducers for the TNF receptor superfamily, play an important role in both adaptive and innate immunity. However, the existence of TRAFs and their biological functions in planarian are still unknown. In this study, a new member of TRAFs, DjTRAF2, was identified in planarian Dugesia japonica. Phylogenetic analysis revealed that DjTRAF2 could be a new member of the invertebrate TRAF2 family. Sequence analysis showed that the open reading frame of DjTRAF2 had 1353 bp in length and encoded a putative protein of 450 amino acids with a predicted molecular mass of ~51.8 kDa and an isoelectric point of 7.052. Whole-mount in situ hybridization showed that DjTRAF2 was predominantly expressed in adult and regenerative pharynx, which is an important immune organ of planarian. Quantitative real-time PCR revealed that the transcriptional level of DjTRAF2 was significantly up-regulated after induced by pathogen-associated molecular patterns (polyinosinic-polycytidylic acid, lipopolysaccharide, peptidoglycan and β-glucan), suggesting that DjTRAF2 is involved in the immune response against pathogen invasion. Collectively, these results demonstrated that DjTRAF2 might play important roles in the innate immunity of planarian.
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Affiliation(s)
- Wenjing Hu
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo, Shandong 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, Shandong 255049, China
| | - Weiwei Wu
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo, Shandong 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, Shandong 255049, China
| | - Shimin Sun
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo, Shandong 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, Shandong 255049, China
| | - Zuojun Liu
- Shenzhen University of Health Science Center, Shenzhen, Guangdong 518060, China
| | - Ao Li
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo, Shandong 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, Shandong 255049, China
| | - Lili Gao
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo, Shandong 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, Shandong 255049, China
| | - Xi Liu
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo, Shandong 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, Shandong 255049, China
| | - Dongwu Liu
- Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, Shandong 255049, China
| | - Hongkuan Deng
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo, Shandong 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, Shandong 255049, China
| | - Bosheng Zhao
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo, Shandong 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, Shandong 255049, China.
| | - Baohua Liu
- Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, Shandong 255049, China; Shenzhen University of Health Science Center, Shenzhen, Guangdong 518060, China.
| | - Qiuxiang Pang
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo, Shandong 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo, Shandong 255049, China.
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