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Meng JH, Huang YB, Long J, Cai QC, Qiao X, Zhang QL, Zhang LD, Yan X, Jing R, Liu XS, Zhou SJ, Yuan YS, Yin-Chen Ma, Zhou LX, Peng NN, Li XC, Cai CH, Tang HM, Martins AF, Jiang JX, Kai-Jun Luo. Innexin hemichannel activation by Microplitis bicoloratus ecSOD monopolymer reduces ROS. iScience 2024; 27:109469. [PMID: 38577101 PMCID: PMC10993139 DOI: 10.1016/j.isci.2024.109469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 01/31/2024] [Accepted: 03/07/2024] [Indexed: 04/06/2024] Open
Abstract
The extracellular superoxide dismutases (ecSODs) secreted by Microplitis bicoloratus reduce the reactive oxygen species (ROS) stimulated by the Microplitis bicoloratus bracovirus. Here, we demonstrate that the bacterial transferase hexapeptide (hexapep) motif and bacterial-immunoglobulin-like (BIg-like) domain of ecSODs bind to the cell membrane and transiently open hemichannels, facilitating ROS reductions. RNAi-mediated ecSOD silencing in vivo elevated ROS in host hemocytes, impairing parasitoid larva development. In vitro, the ecSOD-monopolymer needed to be membrane bound to open hemichannels. Furthermore, the hexapep motif in the beta-sandwich of ecSOD49 and ecSOD58, and BIg-like domain in the signal peptides of ecSOD67 were required for cell membrane binding. Hexapep motif and BIg-like domain deletions induced ecSODs loss of adhesion and ROS reduction failure. The hexapep motif and BIg-like domain mediated ecSOD binding via upregulating innexins and stabilizing the opened hemichannels. Our findings reveal a mechanism through which ecSOD reduces ROS, which may aid in developing anti-redox therapy.
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Affiliation(s)
- Jiang-Hui Meng
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650500, P.R. China
- Yunnan International Joint Laboratory of Virology & Immunology, Kunming, Yunnan 650500, P.R. China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, Yunnan 650500, P.R. China
| | - Yong-Biao Huang
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650500, P.R. China
- Yunnan International Joint Laboratory of Virology & Immunology, Kunming, Yunnan 650500, P.R. China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, Yunnan 650500, P.R. China
| | - Jin Long
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650500, P.R. China
- Yunnan International Joint Laboratory of Virology & Immunology, Kunming, Yunnan 650500, P.R. China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, Yunnan 650500, P.R. China
| | - Qiu-Chen Cai
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University Tübingen, 72076 Tübingen, Germany
- Cluster of Excellence iFIT (EXC 2180) “Image-Guided and Functionally Instructed Tumor Therapies”, University of Tuebingen, 72076 Tübingen, Germany
| | - Xin Qiao
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650500, P.R. China
- Yunnan International Joint Laboratory of Virology & Immunology, Kunming, Yunnan 650500, P.R. China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, Yunnan 650500, P.R. China
| | - Qiong-Li Zhang
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650500, P.R. China
- Yunnan International Joint Laboratory of Virology & Immunology, Kunming, Yunnan 650500, P.R. China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, Yunnan 650500, P.R. China
| | - Li-Dan Zhang
- Department of Biochemistry and Structural Biology, University of Texas Health Science Center, San Antonio, TX 78229, USA
| | - Xiang Yan
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650500, P.R. China
- Yunnan International Joint Laboratory of Virology & Immunology, Kunming, Yunnan 650500, P.R. China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, Yunnan 650500, P.R. China
| | - Rui Jing
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650500, P.R. China
- Yunnan International Joint Laboratory of Virology & Immunology, Kunming, Yunnan 650500, P.R. China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, Yunnan 650500, P.R. China
| | - Xing-Shan Liu
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650500, P.R. China
- Yunnan International Joint Laboratory of Virology & Immunology, Kunming, Yunnan 650500, P.R. China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, Yunnan 650500, P.R. China
| | - Sai-Jun Zhou
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650500, P.R. China
- Yunnan International Joint Laboratory of Virology & Immunology, Kunming, Yunnan 650500, P.R. China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, Yunnan 650500, P.R. China
| | - Yong-Sheng Yuan
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650500, P.R. China
- Yunnan International Joint Laboratory of Virology & Immunology, Kunming, Yunnan 650500, P.R. China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, Yunnan 650500, P.R. China
| | - Yin-Chen Ma
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650500, P.R. China
- Yunnan International Joint Laboratory of Virology & Immunology, Kunming, Yunnan 650500, P.R. China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, Yunnan 650500, P.R. China
| | - Li-Xiang Zhou
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650500, P.R. China
- Yunnan International Joint Laboratory of Virology & Immunology, Kunming, Yunnan 650500, P.R. China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, Yunnan 650500, P.R. China
| | - Nan-Nan Peng
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650500, P.R. China
- Yunnan International Joint Laboratory of Virology & Immunology, Kunming, Yunnan 650500, P.R. China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, Yunnan 650500, P.R. China
| | - Xing-Cheng Li
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650500, P.R. China
- Yunnan International Joint Laboratory of Virology & Immunology, Kunming, Yunnan 650500, P.R. China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, Yunnan 650500, P.R. China
| | - Cheng-Hui Cai
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650500, P.R. China
- Yunnan International Joint Laboratory of Virology & Immunology, Kunming, Yunnan 650500, P.R. China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, Yunnan 650500, P.R. China
| | - Hong-Mei Tang
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650500, P.R. China
- Yunnan International Joint Laboratory of Virology & Immunology, Kunming, Yunnan 650500, P.R. China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, Yunnan 650500, P.R. China
| | - André F. Martins
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University Tübingen, 72076 Tübingen, Germany
- Cluster of Excellence iFIT (EXC 2180) “Image-Guided and Functionally Instructed Tumor Therapies”, University of Tuebingen, 72076 Tübingen, Germany
| | - Jean X. Jiang
- Department of Biochemistry and Structural Biology, University of Texas Health Science Center, San Antonio, TX 78229, USA
| | - Kai-Jun Luo
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650500, P.R. China
- Yunnan International Joint Laboratory of Virology & Immunology, Kunming, Yunnan 650500, P.R. China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, Yunnan 650500, P.R. China
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Li XC, Ma YC, Long J, Yan X, Peng NN, Cai CH, Zhong WF, Huang YB, Qiao X, Zhou LX, Cai QC, Cheng CX, Zhou GF, Han YF, Liu HY, Zhang Q, Tang HM, Meng JH, Luo KJ. Simulating immunosuppressive mechanism of Microplitis bicoloratus bracovirus coordinately fights Spodoptera frugiperda. Front Immunol 2023; 14:1289477. [PMID: 38146373 PMCID: PMC10749342 DOI: 10.3389/fimmu.2023.1289477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 11/27/2023] [Indexed: 12/27/2023] Open
Abstract
Parasitoid wasps control pests via a precise attack leading to the death of the pest. However, parasitoid larvae exhibit self-protection strategies against bracovirus-induced reactive oxygen species impairment. This has a detrimental effect on pest control. Here, we report a strategy for simulating Microplitis bicoloratus bracovirus using Mix-T dsRNA targeting 14 genes associated with transcription, translation, cell-cell communication, and humoral signaling pathways in the host, and from wasp extracellular superoxide dismutases. We implemented either one-time feeding to the younger instar larvae or spraying once on the corn leaves, to effectively control the invading pest Spodoptera frugiperda. This highlights the conserved principle of "biological pest control," as elucidated by the triple interaction of parasitoid-bracovirus-host in a cooperation strategy of bracovirus against its pest host.
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Affiliation(s)
- Xing-Cheng Li
- School of Life Sciences, Yunnan University, Kunming, China
- Yunnan International Joint Laboratory of Virology & Immunology, Yunnan University, Kunming, China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Yin-Chen Ma
- School of Life Sciences, Yunnan University, Kunming, China
- Yunnan International Joint Laboratory of Virology & Immunology, Yunnan University, Kunming, China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Jin Long
- School of Life Sciences, Yunnan University, Kunming, China
- Yunnan International Joint Laboratory of Virology & Immunology, Yunnan University, Kunming, China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Xiang Yan
- School of Life Sciences, Yunnan University, Kunming, China
- Yunnan International Joint Laboratory of Virology & Immunology, Yunnan University, Kunming, China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Nan-Nan Peng
- School of Life Sciences, Yunnan University, Kunming, China
- Yunnan International Joint Laboratory of Virology & Immunology, Yunnan University, Kunming, China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Cheng-Hui Cai
- School of Life Sciences, Yunnan University, Kunming, China
- Yunnan International Joint Laboratory of Virology & Immunology, Yunnan University, Kunming, China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Wen-Feng Zhong
- School of Life Sciences, Yunnan University, Kunming, China
- Yunnan International Joint Laboratory of Virology & Immunology, Yunnan University, Kunming, China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Yong-Biao Huang
- School of Life Sciences, Yunnan University, Kunming, China
- Yunnan International Joint Laboratory of Virology & Immunology, Yunnan University, Kunming, China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Xin Qiao
- School of Life Sciences, Yunnan University, Kunming, China
- Yunnan International Joint Laboratory of Virology & Immunology, Yunnan University, Kunming, China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Li-Xiang Zhou
- School of Life Sciences, Yunnan University, Kunming, China
- Yunnan International Joint Laboratory of Virology & Immunology, Yunnan University, Kunming, China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Qiu-Chen Cai
- School of Life Sciences, Yunnan University, Kunming, China
- Yunnan International Joint Laboratory of Virology & Immunology, Yunnan University, Kunming, China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Chang-Xu Cheng
- School of Life Sciences, Yunnan University, Kunming, China
- Yunnan International Joint Laboratory of Virology & Immunology, Yunnan University, Kunming, China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Gui-Fang Zhou
- School of Life Sciences, Yunnan University, Kunming, China
- Yunnan International Joint Laboratory of Virology & Immunology, Yunnan University, Kunming, China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Yun-Feng Han
- School of Life Sciences, Yunnan University, Kunming, China
- Yunnan International Joint Laboratory of Virology & Immunology, Yunnan University, Kunming, China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Hong-Yu Liu
- School of Life Sciences, Yunnan University, Kunming, China
- Yunnan International Joint Laboratory of Virology & Immunology, Yunnan University, Kunming, China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Qi Zhang
- School of Life Sciences, Yunnan University, Kunming, China
- Yunnan International Joint Laboratory of Virology & Immunology, Yunnan University, Kunming, China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Hong-Mei Tang
- School of Life Sciences, Yunnan University, Kunming, China
- Yunnan International Joint Laboratory of Virology & Immunology, Yunnan University, Kunming, China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Jiang-Hui Meng
- School of Life Sciences, Yunnan University, Kunming, China
- Yunnan International Joint Laboratory of Virology & Immunology, Yunnan University, Kunming, China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Kai-Jun Luo
- School of Life Sciences, Yunnan University, Kunming, China
- Yunnan International Joint Laboratory of Virology & Immunology, Yunnan University, Kunming, China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
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3
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Zhang P, Liu ZY, Yu D, Xu CX, Hu Y, Liang YP, Jin J, Li M. Microplitis bicoloratus parasitism promotes cyclophilin D-p53 interaction to induce apoptosis of hemocytes in Spodoptera litura. Arch Insect Biochem Physiol 2023; 112:e21970. [PMID: 36200410 DOI: 10.1002/arch.21970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 09/04/2022] [Accepted: 09/13/2022] [Indexed: 06/16/2023]
Abstract
Microplitis bicoloratus parasitism can induce apoptosis of hemocytes in the M. bicolortus host, Spodoptera litura. However, it is unclear how M. bicolortus parasitism regulates host signaling pathways to induce apoptosis. Expression of cyclophilin D (CypD) and p53 was significantly upregulated in S. litura hemocytes at 6 days postparasitization. In the parasitized hemocytes, there was mitochondrial membrane potential (△Ψm ) loss, cytochrome c (Cyt C) release from mitochondria, and caspase-3 activation. These occurred while hemocytes were undergoing upregulation of CypD and p53. Parasitism also promoted the interaction between CypD and p53. CypD silencing could rescue the apoptotic phenotypes induced by parasitism, but had no effect on apoptosis in unparasitized S. litura. These findings suggest that the CypD-p53 pathway may be an important component of the parasitism-induced immunosuppressive response and establish a basis for further studies of parasitoid/host interactions.
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Affiliation(s)
- Pan Zhang
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulation, School of Life Sciences, Yunnan University, Kunming, China
| | - Zi-Yan Liu
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulation, School of Life Sciences, Yunnan University, Kunming, China
- Center of Molecular Biology of Tropical Crops, Yunnan Institute of Tropical Crops, Jinghong, China
| | - Dan Yu
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulation, School of Life Sciences, Yunnan University, Kunming, China
| | - Cui-Xian Xu
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulation, School of Life Sciences, Yunnan University, Kunming, China
- School of Health, Yunnan Technology and Business University, Kunming, China
| | - Yan Hu
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulation, School of Life Sciences, Yunnan University, Kunming, China
| | - Ya-Ping Liang
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulation, School of Life Sciences, Yunnan University, Kunming, China
| | - Jie Jin
- School of Urban and Environmental Sciences, Yunnan University of Finance and Economics, Kunming, China
| | - Ming Li
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulation, School of Life Sciences, Yunnan University, Kunming, China
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4
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Cui Y, Zhang L, Hu D, Yang Y. Berberine Inhibits Herpes Simplex Virus 1 Replication in HEK293T Cells. Comput Math Methods Med 2022; 2022:7137401. [PMID: 36276998 PMCID: PMC9586773 DOI: 10.1155/2022/7137401] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 09/29/2022] [Indexed: 11/25/2022]
Abstract
Berberine exhibits polytrophic medicinal roles in various diseases and is safe and effective. However, its role and the underlying mechanism in the replication of herpes simplex virus 1 (HSV-1) remain unreported. This research aimed to determine the functional mechanisms of berberine on HSV-1 infection. We determined the CC50 (405.11 ± 15.67 μM) and IC50 (45.6 ± 6.84 μM) of berberine on HEK293T cells infected with HSV-1. Berberine inhibited the transcription and translation of HSV-1 activity-related genes (gD, ICP-4, ICP-5, and ICP-8) in HSV-1-infected HEK293T cells dose-dependently. Berberine also inhibited the phosphorylation of MAPK proteins (JNK and p38) and inflammatory responses induced by HSV-1 infection in HEK293T cells dose-dependently. In conclusion, berberine attenuates HSV-1 replication through its activity, infective ability, and inflammatory response. Our research indicated that berberine may be a candidate drug for HSV-1 infection.
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Affiliation(s)
- Yujuan Cui
- School of Life Science, Northwest Normal University, Lanzhou, Gansu 730070, China
- Beijing Yanqing Center for Diseases Prevention and Control, Beijing 102100, China
| | - Liangjun Zhang
- Beijing Yanqing Center for Diseases Prevention and Control, Beijing 102100, China
| | - Dandong Hu
- School of Life Science, Northwest Normal University, Lanzhou, Gansu 730070, China
- Beijing Yanqing Center for Diseases Prevention and Control, Beijing 102100, China
- Beijing Yanqing Market Supervision Inspection and Testing Monitoring Center, Beijing 102100, China
| | - Yingli Yang
- School of Life Science, Northwest Normal University, Lanzhou, Gansu 730070, China
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5
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Zhou GF, Chen CX, Cai QC, Yan X, Peng NN, Li XC, Cui JH, Han YF, Zhang Q, Meng JH, Tang HM, Cai CH, Long J, Luo KJ. Bracovirus Sneaks Into Apoptotic Bodies Transmitting Immunosuppressive Signaling Driven by Integration-Mediated eIF5A Hypusination. Front Immunol 2022; 13:901593. [PMID: 35664011 PMCID: PMC9156803 DOI: 10.3389/fimmu.2022.901593] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 04/19/2022] [Indexed: 12/01/2022] Open
Abstract
A typical characteristics of polydnavirus (PDV) infection is a persistent immunosuppression, governed by the viral integration and expression of virulence genes. Recently, activation of caspase-3 by Microplitis bicoloratus bracovirus (MbBV) to cleave Innexins, gap junction proteins, has been highlighted, further promoting apoptotic cell disassembly and apoptotic body (AB) formation. However, whether ABs play a role in immune suppression remains to be determined. Herein, we show that ABs transmitted immunosuppressive signaling, causing recipient cells to undergo apoptosis and dismigration. Furthermore, the insertion of viral–host integrated motif sites damaged the host genome, stimulating eIF5A nucleocytoplasmic transport and activating the eIF5A-hypusination translation pathway. This pathway specifically translates apoptosis-related host proteins, such as P53, CypA, CypD, and CypJ, to drive cellular apoptosis owing to broken dsDNA. Furthermore, translated viral proteins, such Vank86, 92, and 101, known to complex with transcription factor Dip3, positively regulated DHYS and DOHH transcription maintaining the activation of the eIF5A-hypusination. Mechanistically, MbBV-mediated extracellular vesicles contained inserted viral fragments that re-integrated into recipients, potentially via the homologous recombinant repair system. Meanwhile, this stimulation regulated activated caspase-3 levels via PI3K/AKT 308 and 473 dephosphorylation to promote apoptosis of granulocyte-like recipients Sf9 cell; maintaining PI3K/AKT 473 phosphorylation and 308 dephosphorylation inhibited caspase-3 activation leading to dismigration of plasmatocyte-like recipient High Five cells. Together, our results suggest that integration-mediated eIF5A hypusination drives extracellular vesicles for continuous immunosuppression.
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Affiliation(s)
- Gui-Fang Zhou
- School of Life Sciences, Yunnan University, Kunming, China.,Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Chang-Xu Chen
- School of Life Sciences, Yunnan University, Kunming, China.,Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Qiu-Chen Cai
- School of Life Sciences, Yunnan University, Kunming, China.,Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Xiang Yan
- School of Life Sciences, Yunnan University, Kunming, China.,Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Nan-Nan Peng
- School of Life Sciences, Yunnan University, Kunming, China.,Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Xing-Cheng Li
- School of Life Sciences, Yunnan University, Kunming, China.,Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Ji-Hui Cui
- School of Life Sciences, Yunnan University, Kunming, China.,Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Yun-Feng Han
- School of Life Sciences, Yunnan University, Kunming, China.,Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Qi Zhang
- School of Life Sciences, Yunnan University, Kunming, China.,Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Jiang-Hui Meng
- School of Life Sciences, Yunnan University, Kunming, China.,Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Hong-Mei Tang
- School of Life Sciences, Yunnan University, Kunming, China.,Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Chen-Hui Cai
- School of Life Sciences, Yunnan University, Kunming, China.,Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Jin Long
- School of Life Sciences, Yunnan University, Kunming, China.,Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
| | - Kai-Jun Luo
- School of Life Sciences, Yunnan University, Kunming, China.,Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, China
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6
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Hu Y, Liang Y, Tian H, Xu C, Yu D, Zhang P, Ye H, Li M. Microplitis bicoloratus bracovirus regulates cyclophilin A-apoptosis-inducing factor interaction to induce cell apoptosis in the insect immunosuppressive process. Arch Insect Biochem Physiol 2022; 110:e21877. [PMID: 35218062 PMCID: PMC9285338 DOI: 10.1002/arch.21877] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 01/28/2022] [Accepted: 02/02/2022] [Indexed: 05/27/2023]
Abstract
Microplitis bicoloratus bracovirus (MbBV) induces apoptosis in hemocytes of the host (Spodoptera litura) via the cyclophilin A (CypA)-mediated signaling pathway. However, the mechanisms underlying CypA-mediated signaling during apoptosis remain largely unknown. Therefore, in this study, we investigated how CypA and apoptosis-inducing factor (AIF) interact during MbBV-mediated apoptosis. Our findings showed that MbBV induces apoptosis through the CypA-AIF axis of insect immune suppression. In MbBV-infected Spli221 cells, both the expression of the cypa gene and the release of AIF from the mitochondria increased the number of apoptotic cells. CypA and AIF underwent concurrent cytoplasm-nuclear translocation. Conversely, blocking of AIF release from mitochondria not only inhibited the CypA-AIF interaction but also inhibited the cytoplasmic-nuclear translocation of AIF and CypA. Importantly, the survival of the apoptotic phenotype was significantly rescued in MbBV-infected Spli221 cells. In addition, we found that the cyclosporine A-mediated inhibition of CypA did not prevent the formation of the CypA and AIF complex; rather, this only suppressed genomic DNA fragmentation. In vitro experiments revealed direct molecular interactions between recombinant CypA and AIF. Taken together, our results demonstrate that the CypA-AIF interaction plays an important role in MbBV-induced innate immune suppression. This study will help to clarify aspects of insect immunological mechanisms and will be relevant to biological pest control.
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Affiliation(s)
- Yan Hu
- School of Life SciencesYunnan UniversityKunmingChina
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and RegulationsYunnan UniversityKunmingChina
| | - Ya‐Ping Liang
- School of Life SciencesYunnan UniversityKunmingChina
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and RegulationsYunnan UniversityKunmingChina
| | - Hang‐Yu Tian
- School of Life SciencesYunnan UniversityKunmingChina
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and RegulationsYunnan UniversityKunmingChina
| | - Cui‐Xian Xu
- School of Life SciencesYunnan UniversityKunmingChina
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and RegulationsYunnan UniversityKunmingChina
| | - Dan Yu
- School of Life SciencesYunnan UniversityKunmingChina
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and RegulationsYunnan UniversityKunmingChina
| | - Pan Zhang
- School of Life SciencesYunnan UniversityKunmingChina
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and RegulationsYunnan UniversityKunmingChina
| | - Hui Ye
- School of Life SciencesYunnan UniversityKunmingChina
- School of AgricultureYunnan UniversityKunmingChina
| | - Ming Li
- School of Life SciencesYunnan UniversityKunmingChina
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and RegulationsYunnan UniversityKunmingChina
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7
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Zhang F, Wu J, Li X, Ying X, Fang W, Dong Y. Angiopoietin-like protein 4 treated bone marrow-derived mesenchymal stem cells alleviate myocardial injury of patients with myocardial infarction. Nurs Health Sci 2022; 24:312-321. [PMID: 35157362 PMCID: PMC9306838 DOI: 10.1111/nhs.12927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 01/24/2022] [Accepted: 01/25/2022] [Indexed: 11/30/2022]
Abstract
Bone marrow‐derived mesenchymal stem cells (BMSCs) and their exosomes are of great significance for the recovery of cardiac function in patients with myocardial infarction (MI). However, the underlying mechanisms of BMSCs applied to MI treatment remain unclear. Fluorescence‐activated cell sorting (FACs) are performed to assess the apoptosis, reactive oxygen species levels and glucose uptake capacity of BMSCs. Reverse transcription polymerase chain reaction is conducted to detect the levels of vascular endothelial growth factor (VEGF), basic fibroblast growth factor (bFGF), hepatocyte growth factor (HGF), insulin‐like growth factor (IGF), transforming growth factor‐beta 1, connective tissue growth factor, and platelet‐derived growth factor. The levels of apoptosis‐related proteins were detected by Western blot. The levels of VEGF, bFGF, HGF, and IGF were assessed by enzyme‐linked immunosorbent assay. The biochemical kits are applied to detect the levels of malondialdehyde, superoxide dismutase, and adenosine triphosphate/adenosine diphosphate. 2,3,5‐triphenyltetrazolium and Masson staining and immunofluorescence are performed to assess myocardial function of rats. Angiopoietin‐like protein 4 (ANGPTL4) alleviates apoptosis and oxidative stress of BMSCs induced by serum deprivation and hypoxia; ANGPTL4 activates paracrine and accelerate metabolic energy of BMSCs; and ANGPTL4 treated‐BMSCs alleviate myocardial injury of rats with MI. ANGPTL4 treated‐BMSCs alleviate myocardial injury in rats with MI, indicating the combination therapy of ANGPTL4 and BMSCs may alleviate myocardial injury in rats with MI.
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Affiliation(s)
- Fen Zhang
- Department of Cardiology, Jinhua People's Hospital, Zhejiang, China
| | - Jie Wu
- Department of Cardiology, Jinhua People's Hospital, Zhejiang, China
| | - Xingxing Li
- Department of Cardiology, Jinhua People's Hospital, Zhejiang, China
| | - Xuan Ying
- Department of Cardiology, Jinhua People's Hospital, Zhejiang, China
| | - Wenbing Fang
- Department of Cardiology, Jinhua People's Hospital, Zhejiang, China
| | - Yang Dong
- Department of Cardiology, Jinhua People's Hospital, Zhejiang, China
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8
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Liu J, Xu J, Zhou H, Wang L, Yang J. HD-13 Induces Swine Pneumonia Progression via Activation of TLR9. Computational and Mathematical Methods in Medicine 2022; 2022:1-11. [PMID: 35132333 PMCID: PMC8817872 DOI: 10.1155/2022/8660752] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 12/12/2021] [Accepted: 12/16/2021] [Indexed: 12/25/2022]
Abstract
Swine pneumonia commonly known as swine pasteurellosis is an infectious disease of swine caused by Pasteurella multocida infection. It has been reported that Toll-like receptors (TLRs) play a vital role in swine pneumonia progression. However, the underlying mechanism has not been elucidated. This research was aimed at investigating the molecular mechanism by which TLR9 regulates swine pneumonia progression. Our findings illustrated that the HD-13 strain of Pasteurella multocida D (HD-13) accelerated TLR9 expression in porcine alveolar macrophage 3D4/21 cells; HD-13 activated the inflammatory response via accelerating TLR9 expression. Mechanistically, HD-13 activated mitogen-activated protein kinase (MAPK) and nuclear factor kB (NF-κB) signals. In conclusion, HD-13 may activate MAPK and NF-κB pathways via accelerating TLR9 expression, thereby accelerating the inflammatory response in the progression of swine pneumonia. TLR9 may serve as a novel therapeutic target for swine pneumonia. Our research may provide a theoretical basis for the prevention and treatment of swine pneumonia.
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Li W, Yang S, Chen G, He S. MiR-200c-3p regulates pyroptosis by targeting SLC30A7 in diabetic retinopathy. Hum Exp Toxicol 2022; 41:9603271221099589. [PMID: 35607288 DOI: 10.1177/09603271221099589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
CLINICAL RELEVANCE MicroRNAs (miRNAs) have been reported to be involved in the progression of various diseases. Studying the regulatory mechanisms of miRNAs can help clinical treatment. BACKGROUND Diabetic retinopathy (DR) is one of the complications of diabetes. The objective of this study was to elucidate the underlying molecular mechanisms by which miR-200c-3p regulates the pyroptosis of DR cell. METHODS Human retinal microvascular endothelial cells (HRMECs) and high glucose (HG) cultures established DR cell model in vitro. RT-qPCR is used to detect the expression level of miRNAs. CCK-8 assays and flow cytometry are used to detect apoptosis of HRMECs cell. Western blotting is used to detect cleaved caspase-3, cleaved caspase-1, and N-GSDMD proteins levels in HRMECs. The ELISA assay is used to detect the expression of IL-1β and IL-18. Predict and validate potential binding sites between miR-200c-3p and SLC30A7 by dual luciferase reporter gene analysis. RESULTS The results showed that HG caused damage to HRMECs through the pyroptosis pathway rather than the apoptosis pathway. MiR-200c-3p is highly expressed in HG induced-HRMECs, and knockdown of miR-200c-3p mitigates HG-induced HRMECs pyroptosis. MiR-200c-3p negatively targets SLC30A7 in HRMECs, and miR-200c-3p regulates pyroptosis of HG-induced HRMECs by targeting SLC30A7. CONCLUSION The results suggest that miR-200c-3p might be a promising interference target for DR prevention and treatment. The results of current study may provide new insights into development of therapeutic strategies for DR.
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Affiliation(s)
- Weina Li
- Department of Glaucoma and Cataract, Liuzhou Aier Eye Hospital, Affiliated Hospital of Aier Ophthalmology College of Central South University, Liuzhou, China
| | - Sheng Yang
- Department of Glaucoma and Cataract, Liuzhou Aier Eye Hospital, Affiliated Hospital of Aier Ophthalmology College of Central South University, Liuzhou, China
| | - Guangsheng Chen
- Department of Glaucoma and Cataract, Liuzhou Aier Eye Hospital, Affiliated Hospital of Aier Ophthalmology College of Central South University, Liuzhou, China
| | - Shiping He
- Department of Glaucoma and Cataract, Liuzhou Aier Eye Hospital, Affiliated Hospital of Aier Ophthalmology College of Central South University, Liuzhou, China
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10
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Abstract
MiR-769-5p regulates tumor correlative genes, which plays a critical role in the progression of various types of tumor. However, the precise regulatory mechanism of miR-769-5p on nonsmall cell lung cancer (NSCLC) is unknown. This study was to discover the role and underlying mechanisms of miR-769-5p in NSCLC. MiR-769-5p expression was shown to be reduced, according to our findings. MiR-769-5p overexpression inhibited NSCLC cell proliferation while promoting NSCLC cell apoptosis. Furthermore, NSCLC cell migration and invasion were reduced when miR-769-5p was overexpressed. Furthermore, HDGF was confirmed as a miR-769-5p target gene that was negatively regulated by miR-769-5p. Furthermore, more research revealed that HDGF overexpression reduced the inhibitory effect of miR-769-5p on NSCLC cell biofunction. Finally, miR-769-5p inhibited NSCLC cell proliferation and invasion by targeting HDGF, indicating that NSCLC could benefit from miR-769-5p as a diagnostic and prognostic biomarker.
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Affiliation(s)
- Yuejun Sun
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
- Department of Cardiothoracic Surgery, Jiangsu Jiangyin People's Hospital, Jiangyin, China
| | - Jie Li
- Department of Respiratory Medicine, Affiliated Jiangyin Hospital of Southeast University Medical College, Jiangyin, China
| | - Shiying Zheng
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
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11
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Abstract
Background Osteoarthritis (OA) is a severe articular cartilage disease whose pathogenesis involves the inflammation of chondrocytes. MicroRNAs (miRNAs) are considered to be effective inflammation regulators. However, the regulatory mechanism of miRNAs in osteoarthritis needs to be further elucidated. In this paper, we aim to investigate the underlying mechanisms by which miR-4303 regulates osteoarthritis. Methods RT-qPCR is performed to detect the mRNA expression levels of miR-4303, ASPN, PDIA3, PIK3CA, and TRAF3. CCK-8 assay and EdU assay are carried to assess chondrocyte viability. The protein expression levels of ASPN, PCNA, Ki-67, CyclinA1, CyclinB1, CyclinD2, p27, Bax, Bcl-2, cleaved caspase-3, and Cleaved caspase-9 were measured by western blot. FACs is performed to detect the cell cycle and apoptosis of chondrocyte. ELISA is conducted to assess the levels of TNF-β, IL-1β and IL-6 in the supernatant of chondrocytes. The potential binding sites of miR-4303 and ASPN are predicted by the miRDB database and confirmed by the dual-luciferase reporter gene assay. Results Our findings illustrated that miR-4303 was down-regulated in arthritic tissues and LPS-induced chondrocytes; miR-4303 overexpression rescued the decrease in cell viability, cell cycle arrest and apoptosis induced by LPS. Furthermore, miR-4303 overexpression inhibited the release of inflammatory factors in LPS-induced chondrocytes, miR-4303 relieved chondrocyte inflammation via targeting ASPN. Conclusion MiR-4303 serves as a prognostic biomarker and relieves chondrocyte inflammation via targeting ASPN. Our findings provide novel prognostic biomarkers in predicting the progression and prognosis of osteoarthritis.
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Affiliation(s)
- Chunyu Wang
- Department of Orthopedics, Chifeng Municipal Hospital, Chifeng, 024000, Inner Mongolia Autonomous Region, China
| | - Li Wang
- Department of Orthopedics, Second People's Hospital of Rizhao City, Rizhao, 276808, Shandong Province, China
| | - Xingfa Guan
- Department of Orthopedics, Huantai County People's Hospital, Zibo, 256400, Shandong Province, China
| | - Changfeng Yue
- Department of Orthopedics, Dongying District People's Hospital, No. 96 Jinan Road, Dongying District, Dongying, 257000, Shandong Province, China.
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12
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Zhang M, Wang Q, Ke Z, Liu Y, Guo H, Fang S, Lu K. LINC01001 Promotes Progression of Crizotinib-Resistant NSCLC by Modulating IGF2BP2/MYC Axis. Front Pharmacol 2021; 12:759267. [PMID: 34630126 PMCID: PMC8497803 DOI: 10.3389/fphar.2021.759267] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 09/08/2021] [Indexed: 12/25/2022] Open
Abstract
Background: Crizotinib is a microtubule-related protein-4-anaplastic lymphoma kinase (EML4-ALK) multi-target tyrosine kinase inhibitor applied in the treatment of ALK-rearranged NSCLC. However, the specific molecular mechanism underlying its therapeutic effect remains unclear. Therefore, the purpose of this research is to explore the mechanism by which crizotinib targets NSCLC with ALK-rearrangement, mainly whether it is related to LINC01001 in regulating NSCLC progression via IGF2BP2/MYC axis. Methods: RT-qPCR is conducted to evaluate the mRNA levels of LINC01001, IGF2BP2 and MYC in A549/R and H1299/R cells. CCK-8 and EdU assays are performed to assess the viability and proliferation of A549/R and H1299/R cells. Western blot is conducted to measure the levels of PCNA and Ki-67 proteins in A549/R and H1299/R cells. FACs and TUNEL are performed to detect apoptosis of A549/R and H1299/R cells. Immunohistochemical staining is performed to assess the levels of Ki67 in crizotinib-resistant NSCLC tissue. Bioinformatics analysis of multiple CLIP (crosslinking-immunoprecipitation) data found potential binding sites between LINC01001 and IGF2BP2, IGF2BP2 and MYC, that are confirmed by RIP assay and RNA pulldown assay. Results: Our findings illustrated that LINC01001 is highly expressed in crizotinib-resistant NSCLC cells and associated with poor overall survival of NSCLC patients. Inhibition of LINC01001 depresses crizotinib resistance of NSCLC cells. LINC01001 interacts with IGF2BP2, and inhibition of IGF2BP2 depresses crizotinib resistance of NSCLC cells. IGF2BP2 interacts with the mRNA of MYC, and LINC01001 overexpression increases crizotinib resistance of NSCLC via MYC. Conclusion: LINC01001 promotes the progression of crizotinib-resistant NSCLC by modulating the IGF2BP2/MYC axis. Our research clarifies the specific mechanism of crizotinib-resistance in NSCLC treatment.
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Affiliation(s)
- Meiling Zhang
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Qian Wang
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Zihao Ke
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yijing Liu
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Huijin Guo
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Shencun Fang
- Department of Respiratory Medicine, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China
| | - Kaihua Lu
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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Peng WX, He PX, Liu LJ, Zhu T, Zhong YQ, Xiang L, Peng K, Yang JJ, Xiang GD. LncRNA GAS5 activates the HIF1A/VEGF pathway by binding to TAF15 to promote wound healing in diabetic foot ulcers. J Transl Med 2021; 101:1071-1083. [PMID: 33875793 DOI: 10.1038/s41374-021-00598-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 03/01/2021] [Accepted: 03/05/2021] [Indexed: 12/14/2022] Open
Abstract
A diabetic foot ulcer (DFU) is one of the most devastating complications of diabetes. It has been reported that lncRNA GAS5 plays a vital role in wound healing in DFUs. However, the specific mechanism remains unclear. In this research, we aimed to investigate the role of GAS5 in wound healing in DFUs as well as the underlying mechanism. qPCR or western blotting was performed to measure the expression levels of GAS5, HIF1A, VEGF and TAF15. CCK-8 or EdU assays, flow cytometry, wound healing assays and tube formation assays were carried out to assess the proliferation, apoptosis, wound healing and in vitro angiogenesis of HUVECs, respectively. RNA pull-down and RIP assays were performed to verify the interaction between GAS5 and TAF15. ChIP and luciferase assays were conducted to verify the binding of TAF15 to the HIF1A promoter. In the DFU mouse model, H&E and Masson staining were used to determine epidermal and dermal thickness and collagen formation. GAS5 and HIF1A were downregulated in the skin tissues of DFU patients, and GAS5 overexpression promoted cell proliferation, wound healing and tubule formation in HG-treated HUVECs. In addition, GAS5 facilitated HIF1A expression by interacting with TAF15. Rescue assays demonstrated that the suppression of HIF1A/VEGF pathway activation partially reversed the functional roles of GAS5 in HUVECs. Furthermore, GAS5 accelerated wound healing by activating the HIF1A/VEGF pathway in mice with DFUs. GAS5 activates the HIF1A/VEGF pathway by binding to TAF15, resulting in accelerated wound healing in DFUs. Our findings may provide a theoretical basis for the clinical treatment of DFUs.
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Affiliation(s)
- Wei-Xia Peng
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, Guangdong, PR China
- Department of Endocrine, Yiyang Central Hospital, Yiyang, Hunan, PR China
| | - Pei-Xiang He
- Department of Endocrine, Yiyang Central Hospital, Yiyang, Hunan, PR China
| | - Li-Jun Liu
- Department of Endocrine, Yiyang Central Hospital, Yiyang, Hunan, PR China
| | - Ting Zhu
- Department of Endocrine, Yiyang Central Hospital, Yiyang, Hunan, PR China
| | - Ya-Qin Zhong
- Department of Endocrine, Yiyang Central Hospital, Yiyang, Hunan, PR China
| | - Lin Xiang
- Department of Endocrine, Central Theater General Hospital of PLA, Wuhan, Hubei, PR China
| | - Ke Peng
- Department of Endocrine, Yiyang Central Hospital, Yiyang, Hunan, PR China
| | - Jing-Jin Yang
- Department of Endocrine, Huaihua First People's Hospital, Huaihua, Hunan, PR China
| | - Guang-Da Xiang
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, Guangdong, PR China.
- Department of Endocrine, Central Theater General Hospital of PLA, Wuhan, Hubei, PR China.
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14
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Cai QC, Chen CX, Liu HY, Zhang W, Han YF, Zhang Q, Zhou GF, Xu S, Liu T, Xiao W, Zhu QS, Luo KJ. Interactions of Vank proteins from Microplitis bicoloratus bracovirus with host Dip3 suppress eIF4E expression. Dev Comp Immunol 2021; 118:103994. [PMID: 33417999 DOI: 10.1016/j.dci.2021.103994] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 12/31/2020] [Accepted: 12/31/2020] [Indexed: 06/12/2023]
Abstract
Microplitis bicoloratus bracovirus (MbBV) inhibits the immune response of the host Spodoptera litura by disrupting nuclear factor (NF)-κB signaling and downstream gene expression. However, the underlying molecular mechanisms are not well understood. Herein, we report that viral ankyrin (Vank) proteins interacted with host dorsal-interacting protein 3 (Dip3) to selectively inhibit the transcription of eukaryotic translation initiation factor 4 E (eIF4E). Dip3 and Vank proteins were co-expressed and colocalized in the nucleus. Furthermore, ectopic expression of Dip3 rescued the transcription of some NF-κB-dependent genes suppressed by Vank proteins, including eIF4E. Co-immunoprecipitation and pull-down assays confirmed that Vank proteins interacted with and bound to full-length Dip3, which including MADF, DNA-binding protein, BESS, and protein-protein interaction motifs as well as non-motif sequences. In vivo, RNAi-mediated dip3 silencing decreased eIF4E levels and was accompanied by an immunosuppressive phenotype in S. litura. Our results provided novel insights into the regulation of host transcription during immune suppression by viral proteins that modulate nuclear NF-κB signaling.
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Affiliation(s)
- Qiu-Chen Cai
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming, 650500, PR China
| | - Chang-Xu Chen
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming, 650500, PR China
| | - Hong-Yu Liu
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming, 650500, PR China
| | - Wei Zhang
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming, 650500, PR China
| | - Yun-Feng Han
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming, 650500, PR China
| | - Qi Zhang
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming, 650500, PR China
| | - Gui-Fang Zhou
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming, 650500, PR China
| | - Sha Xu
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China
| | - Tian Liu
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China
| | - Wei Xiao
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China
| | - Qi-Shun Zhu
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China
| | - Kai-Jun Luo
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming, 650500, PR China.
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15
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Chen CX, He HJ, Cai QC, Zhang W, Kou TC, Zhang XW, You S, Chen YB, Liu T, Xiao W, Zhu QS, Luo KJ. Bracovirus-mediated innexin hemichannel closure in cell disassembly. iScience 2021; 24:102281. [PMID: 33817584 PMCID: PMC8008186 DOI: 10.1016/j.isci.2021.102281] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 02/19/2021] [Accepted: 03/03/2021] [Indexed: 01/10/2023] Open
Abstract
Cell-cell communication is necessary for cellular immune response. Hemichannel closure disrupts communication between intracellular and extracellular environments during polydnavirus-induced immunosuppression in invertebrates. However, the effects of hemichannel closure on cellular immune response are unclear. Here, we examined apoptotic body formation triggered by hemichannel closure in hemocytes of Spodoptera litura infected with bracovirus from the parasitic wasp, Microplitis bicoloratus. We showed that Microplitis bicoloratus bracovirus (MbBV) induced apoptotic cell disassembly, accompanied by hemichannel closure. Hemocyte apoptotic body formation was caused by the dysregulation of the innexins (Inxs), Inx1, Inx2, Inx3, and Inx4, during the MbBV-mediated inhibition of pI3K/AKT signaling and activation of caspase-3, which cleaved gap junction Inx proteins. Our results showed that hemichannel opening or closure in response to various stimuli, which induces the modulation of Inx levels, could inhibit or activate apoptotic body formation, respectively. Therefore, the "hemichannel open and close" model may regulate the cellular immune response.
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Affiliation(s)
- Chang-Xu Chen
- School of Life Sciences, Yunnan University, Kunming 650500, P.R. China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming 650500, P.R. China
- Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming 650500, P. R. China
| | - Hao-Juan He
- School of Life Sciences, Yunnan University, Kunming 650500, P.R. China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming 650500, P.R. China
- Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming 650500, P. R. China
| | - Qiu-Chen Cai
- School of Life Sciences, Yunnan University, Kunming 650500, P.R. China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming 650500, P.R. China
- Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming 650500, P. R. China
| | - Wei Zhang
- School of Life Sciences, Yunnan University, Kunming 650500, P.R. China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming 650500, P.R. China
- Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming 650500, P. R. China
| | - Tian-Chao Kou
- School of Life Sciences, Yunnan University, Kunming 650500, P.R. China
| | - Xue-Wen Zhang
- School of Life Sciences, Yunnan University, Kunming 650500, P.R. China
| | - Shan You
- School of Life Sciences, Yunnan University, Kunming 650500, P.R. China
| | - Ya-Bin Chen
- School of Life Sciences, Yunnan University, Kunming 650500, P.R. China
| | - Tian Liu
- School of Life Sciences, Yunnan University, Kunming 650500, P.R. China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming 650500, P.R. China
- Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming 650500, P. R. China
| | - Wei Xiao
- School of Life Sciences, Yunnan University, Kunming 650500, P.R. China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming 650500, P.R. China
| | - Qi-Shun Zhu
- School of Life Sciences, Yunnan University, Kunming 650500, P.R. China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming 650500, P.R. China
| | - Kai-Jun Luo
- School of Life Sciences, Yunnan University, Kunming 650500, P.R. China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming 650500, P.R. China
- Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming 650500, P. R. China
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Yang L, Xing W, Xiao WZ, Tang L, Wang L, Liu MJ, Dai B. 2,3,5,4'-Tetrahydroxy-stilbene-2- O-beta-d-glucoside induces autophagy-mediated apoptosis in hepatocytes by upregulating miR-122 and inhibiting the PI3K/Akt/mTOR pathway: implications for its hepatotoxicity. Pharm Biol 2020; 58:806-814. [PMID: 32881597 PMCID: PMC8641687 DOI: 10.1080/13880209.2020.1803367] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 07/22/2020] [Accepted: 07/26/2020] [Indexed: 06/11/2023]
Abstract
CONTEXT The potential hepatotoxicity of Polygoni Multiflori Radix (PMR) has attracted much attention, but the specific mechanism of inducing hepatotoxicity is still unclear due to the complexity of its components. OBJECTIVE This study investigated the specific mechanism by which 2,3,5,4'-tetrahydroxy-stilbene-2-O-β-d-glucoside (TSG) regulates hepatotoxicity. MATERIALS AND METHODS The toxic effects of TSG (10, 100, 1000 μg/mL) on WRL-68 cells were examined using MTT, flow cytometry, and LDH assay after 24 h of incubation. Untreated cells served as the control. Gene and protein expression levels were determined by quantitative real-time PCR and Western blot, respectively. Immunofluorescence analysis was conducted to investigate the expression of light chain 3 (LC3). Luciferase activity assay was used to assess the targeted regulation of RUNX1 by miR-122. RESULTS The half maximal inhibitory concentration (IC50) of TSG in WRL-68 cells was calculated as 1198.62 μg/mL. TSG (1000 μg/mL) inhibited cell viability and LDH activity and promoted WRL-68 cell apoptosis by inducing autophagy. Subsequent findings showed that TSG induced autophagy and promoted apoptosis in WRL-68 cells by downregulating the levels of p-PI3K, p-Akt, and p-mTOR proteins, while RUNX1 overexpression rescued this inhibition. Additionally, the effect of TSG on hepatocyte apoptosis was reversed by miR-122 knockdown. Furthermore, bioinformatics and dual luciferase reporter assay results indicated that miR-122 targeted RUNX1. DISCUSSION AND CONCLUSIONS Our data demonstrate for the first time that TSG regulates hepatotoxicity, possibly by upregulating miR-122 and inhibiting the RUNX1-mediated PI3K/Akt/mTOR pathway to promote autophagy and induce hepatocyte apoptosis. Further in vivo research is necessary to verify our conclusion.
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Affiliation(s)
- Lei Yang
- Department of Preparations, The First Hospital of Hunan University of Chinese Medicine, Changsha, P.R. China
| | - Wei Xing
- Department of Intensive Care Medicine, The Third Xiangya Hospital of Central South University, Changsha, P.R. China
| | - Wang-Zhong Xiao
- Department of Pharmacy, The First Hospital of Hunan University of Chinese Medicine, Changsha, P.R. China
| | - Lin Tang
- Department of Preparations, The First Hospital of Hunan University of Chinese Medicine, Changsha, P.R. China
| | - Lu Wang
- Department of Preparations, The First Hospital of Hunan University of Chinese Medicine, Changsha, P.R. China
| | - Meng-Jiao Liu
- Hunan University of Chinese Medicine, Changsha, P.R. China
| | - Bing Dai
- Department of Pharmacy, The First Hospital of Hunan University of Chinese Medicine, Changsha, P.R. China
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17
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Chen WP, Zhang G, Cheng ZJ, Gu XH, Li M, Liu X. Inhibitor Kappa B Kinase β, Modulated by DJ-1/p-VHL, Reduces Phosphorylated Tau (p-Tau) Accumulation via Autophagy in Alzheimer's Disease Model. Neuroscience 2020; 452:1-12. [PMID: 33069779 DOI: 10.1016/j.neuroscience.2020.10.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 10/04/2020] [Indexed: 11/30/2022]
Abstract
It has been demonstrated Inhibitor Kappa B Kinase β (IKKβ) facilitates autophagy, which in turn mediates p-Tau protein clearance. However, the specific regulatory mechanism in Alzheimer's disease (AD) remains unclear. Firstly, AD model was generated by the intracerebroventricular (ICV) injection of the Β-amyloid 1-42 (Aβ1-42) peptide. Subsequently, mice were injected with shRNA adenoviral transduction particles designed to target DJ-1 or Aβ1-42 or Aβ1-42 + shNC or Aβ1-42 + shRNA against DJ-1. shRNA against DJ-1 were injected into hippocampus of mice (8 × 104 viral particles for each mice) for seven consecutive days. Immunohistochemistry was performed to detect the accumulation of Aβ in the hippocampus of mice, and Hematoxylin-Eosin (HE) staining assay was carried to detect pathological changes in the hippocampus of mice. Further, sh-IKKβ, shDJ-1, pcDNA-IKKβ and pcDNA-DJ-1 plasmids were transfected into HT-22 cells, MTT assay, TUNEL staining and Hoechst staining were performed to detect cell viability and apoptosis, respectively. Western blotting was carried to measure the relative expression of proteins. Findings indicated that Aβ1-42 inhibited autophagy and up-regulated p-Tau protein expression; Overexpression of IKKβ and DJ-1 all rescued the autophagy inhibited by Aβ1-42 and down-regulated p-Tau protein expression induced by Aβ1-42; DJ-1 up-regulated IKKβ via p-VHL, further promoted autophagy and reduced the expression of p-Tau protein; DJ-1 knockdown inhibited autophagy and up-regulated p-Tau protein expression, resulting in delayed behavior in mice. In conclusion, IKKβ, modulated by DJ-1/p-VHL, reduces p-Tau accumulation via autophagy in AD's disease model. This study may provide theoretical basis for the treatment of AD.
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Affiliation(s)
- Wei-Ping Chen
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi Province, PR China
| | - Ge Zhang
- Department of Psychiatry, JiangXi Mental Hospital, Nanchang 330029, Jiangxi Province, PR China
| | - Zhi-Juan Cheng
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi Province, PR China
| | - Xun-Hu Gu
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi Province, PR China
| | - Min Li
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi Province, PR China
| | - Xu Liu
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi Province, PR China.
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18
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Cui JH, Dong SM, Chen CX, Xiao W, Cai QC, Zhang LD, He HJ, Zhang W, Zhang XW, Liu T, Ding L, Yang Y, Lai JH, Zhu QS, Luo KJ. Microplitis bicoloratus bracovirus modulates innate immune suppression through the eIF4E-eIF4A axis in the insect Spodoptera litura. Dev Comp Immunol 2019; 95:101-107. [PMID: 30776419 DOI: 10.1016/j.dci.2019.02.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 02/14/2019] [Accepted: 02/14/2019] [Indexed: 06/09/2023]
Abstract
Eukaryotic initiation factor 4E (eIF4E) is regulated during the innate immune response. However, its translational regulation under innate immune suppression remains largely unexplored. Microplitis bicoloratus bracovirus (MbBV), a symbiotic virus harbored by the parasitoid wasp, Microplitis bicoloratus, suppresses innate immunity in parasitized Spodoptera litura. Here, we generated eIF4E dsRNA and used it to silence the eIF4E gene of S. litura, resulting in a hallmark immunosuppressive phenotype characterized by increased apoptosis of hemocytes and retardation of head capsule width development. In response to natural parasitism, loss of eIF4E function was associated with similar immunosuppression, and we detected no significant differences between the response to parasitism and treatment with eIF4E RNAi. Under MbBV infection, eIF4E overexpression significantly suppressed MbBV-induced increase in apoptosis and suppressed apoptosis to the same extent as co-expression of both eIF4E and eIF4A. There were no significant differences between MbBV-infected and uninfected larvae in which eIF4E was overexpressed. More importantly, in the eIF4E RNAi strain, eIF4A RNAi did not increase apoptosis. Collectively, our results indicate that eIF4E plays a nodal role in the MbBV-suppressed innate immune response via the eIF4E-eIF4A axis.
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Affiliation(s)
- Ji-Hui Cui
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming, 650500, PR China; Key Laboratory for Biochemistry and Molecular Biology and School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, 650500, PR China
| | - Shu-Mei Dong
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Key Laboratory for Biochemistry and Molecular Biology and School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, 650500, PR China
| | - Chang-Xu Chen
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming, 650500, PR China; Key Laboratory for Biochemistry and Molecular Biology and School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, 650500, PR China
| | - Wei Xiao
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China
| | - Qiu-Cheng Cai
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming, 650500, PR China; Key Laboratory for Biochemistry and Molecular Biology and School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, 650500, PR China
| | - Li-Dan Zhang
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming, 650500, PR China; Key Laboratory for Biochemistry and Molecular Biology and School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, 650500, PR China
| | - Hao-Juan He
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming, 650500, PR China; Key Laboratory for Biochemistry and Molecular Biology and School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, 650500, PR China
| | - Wei Zhang
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming, 650500, PR China; Key Laboratory for Biochemistry and Molecular Biology and School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, 650500, PR China
| | - Xue-Wen Zhang
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming, 650500, PR China; Key Laboratory for Biochemistry and Molecular Biology and School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, 650500, PR China
| | - Tian Liu
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China
| | - Lei Ding
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory for Biochemistry and Molecular Biology and School of Life Sciences, Yunnan University, Kunming, 650500, PR China
| | - Yang Yang
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, 650500, PR China
| | - Jian-Hua Lai
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China
| | - Qi-Shun Zhu
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, 650500, PR China
| | - Kai-Jun Luo
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming, 650500, PR China; Key Laboratory for Biochemistry and Molecular Biology and School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, 650500, PR China.
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19
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Tian HY, Hu Y, Zhang P, Xing WX, Xu C, Yu D, Yang Y, Luo K, Li M. Spodoptera litura cyclophilin A is required for Microplitis bicoloratus bracovirus-induced apoptosis during insect cellular immune response. Arch Insect Biochem Physiol 2019; 100:e21534. [PMID: 30623473 DOI: 10.1002/arch.21534] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Revised: 12/17/2018] [Accepted: 12/19/2018] [Indexed: 05/27/2023]
Abstract
Microplitis bicoloratus bracovirus (MbBV) is a polydnavirus found in the parasitic wasp M. bicoloratus. Although MbBV is a known inducer of apoptosis in host hemocytes, the mechanism by which this occurs remains elusive. In this study, we found that expression of cyclophilin A (CypA) was significantly upregulated in Spodoptera litura hemocytes at 6-day post-parasitization. Similar results were reported in High Five cells (Hi5 cells) infected by MbBV, suggesting that the upregulation of CypA is linked to MbBV infection in insect cells. cDNA encoding CypA was cloned from parasitized hemocytes of S. litura, and bioinformatic analyses showed that S. litura CypA belongs to the cyclophilin family of proteins. Overexpression of S. litura CypA in Hi5 cells revealed that the protein promotes MbBV-induced apoptosis in vitro. Conversely, suppression of the expression and activity of CypA protein significantly rescued the apoptotic phenotype observed in MbBV-infected Hi5 cells, suggesting that it plays a key role in this process. MbBV infection also promoted the cytoplasmic-nuclear translocation of CypA in Hi5 cells. Taken together, these results suggest that MbBV infection upregulates the expression of CypA, which is required for MbBV-mediated apoptosis. Our findings provide insight into the role that CypA plays in insect cellular immune response.
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Affiliation(s)
- Hang-Yu Tian
- Center for Life Science, School of Life Sciences, Yunnan University, Kunming, People's Republic of China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, People's Republic of China
| | - Yan Hu
- Center for Life Science, School of Life Sciences, Yunnan University, Kunming, People's Republic of China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, People's Republic of China
| | - Pan Zhang
- Center for Life Science, School of Life Sciences, Yunnan University, Kunming, People's Republic of China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, People's Republic of China
| | - Wen-Xi Xing
- Center for Life Science, School of Life Sciences, Yunnan University, Kunming, People's Republic of China
| | - Cuixian Xu
- Center for Life Science, School of Life Sciences, Yunnan University, Kunming, People's Republic of China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, People's Republic of China
| | - Dan Yu
- Center for Life Science, School of Life Sciences, Yunnan University, Kunming, People's Republic of China
| | - Yang Yang
- Center for Life Science, School of Life Sciences, Yunnan University, Kunming, People's Republic of China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, People's Republic of China
| | - Kaijun Luo
- Center for Life Science, School of Life Sciences, Yunnan University, Kunming, People's Republic of China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, People's Republic of China
| | - Ming Li
- Center for Life Science, School of Life Sciences, Yunnan University, Kunming, People's Republic of China
- Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, People's Republic of China
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20
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Visconti V, Eychenne M, Darboux I. Modulation of antiviral immunity by the ichnovirus HdIV in Spodoptera frugiperda. Mol Immunol 2019; 108:89-101. [PMID: 30784767 DOI: 10.1016/j.molimm.2019.02.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2019] [Revised: 02/13/2019] [Accepted: 02/13/2019] [Indexed: 12/12/2022]
Abstract
Polydnaviruses (PDVs) are obligatory symbionts found in thousands of endoparasitoid species and essential for successful parasitism. The two genera of PDVs, ichnovirus (IV) and bracovirus (BV), use different sets of virulence factors to ensure successful parasitization of the host. Previous studies have shown that PDVs target apoptosis, one of the innate antiviral responses in many host organisms. However, IV and BV have been shown to have opposite effects on this process. BV induces apoptosis in host cells, whereas some IV proteins have been shown to have anti-apoptotic activity. The different biological contexts in which the assays were performed may account for this difference. In this study, we evaluated the interplay between apoptosis and the ichnovirus HdIV from the parasitoid Hyposoter didymator, in the HdIV-infected hemocytes and fat bodies of S. frugiperda larvae, and in the Sf9 insect cell line challenged with HdIV. We found that HdIV induced cell death in hemocytes and fat bodies, whereas anti-apoptotic activity was observed in HdIV-infected Sf9 cells, with and without stimulation with viral PAMPs or chemical inducers. We also used an RT-qPCR approach to determine the expression profiles of a set of genes known to encode key components of the other main antiviral immune pathways described in insects. The analysis of immune gene transcription highlighted differences in antiviral responses to HdIV as a function of host cell type. However, all these antiviral pathways appeared to be neutralized by low levels of expression for the genes encoding the key components of these pathways, in all biological contexts. Finally, we investigated the effect of HdIV on the general antiviral defenses of the lepidopteran larvae in more detail, by studying the survival of S. frugiperda co-infected with HdIV and the entomopathogenic densovirus JcDV. Coinfected S. frugiperda larvae have increased resistance to JcDV at an early phase of infection, whereas HdIV effects enhance the virulence of the virus at later stages of infection. Overall, these results reveal complex interactions between HdIV and its cellular environment.
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Affiliation(s)
- Vincent Visconti
- UMR 1333 INRA - Université de Montpellier Diversité, Génomes & Interactions Microorganismes-Insectes (DGIMI), 34095 Montpellier, France.
| | - Magali Eychenne
- UMR 1333 INRA - Université de Montpellier Diversité, Génomes & Interactions Microorganismes-Insectes (DGIMI), 34095 Montpellier, France
| | - Isabelle Darboux
- UMR 1333 INRA - Université de Montpellier Diversité, Génomes & Interactions Microorganismes-Insectes (DGIMI), 34095 Montpellier, France.
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21
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Ye XQ, Shi M, Huang JH, Chen XX. Parasitoid polydnaviruses and immune interaction with secondary hosts. Dev Comp Immunol 2018; 83:124-129. [PMID: 29352983 DOI: 10.1016/j.dci.2018.01.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 01/02/2018] [Accepted: 01/12/2018] [Indexed: 05/26/2023]
Abstract
Polydnaviruses (PDVs) are obligatory symbionts with parasitoid wasps. The PDV virions are produced solely in wasp (the primary host) calyx cells. They are injected into caterpillar hosts (the secondary host) during parasitoid oviposition, where they express irreplaceable actions to ensure survival and development of wasp larvae. Some of PDV gene products suppress host immune responses while others alter host growth, metabolism or endocrine system. Here, we treat new findings on PDV gene products and their action on immunity within secondary hosts.
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Affiliation(s)
- Xi-Qian Ye
- State Key Lab of Rice Biology and Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insect Pests, Institute of Insect Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China
| | - Min Shi
- State Key Lab of Rice Biology and Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insect Pests, Institute of Insect Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China
| | - Jian-Hua Huang
- State Key Lab of Rice Biology and Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insect Pests, Institute of Insect Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China
| | - Xue-Xin Chen
- State Key Lab of Rice Biology and Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insect Pests, Institute of Insect Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China.
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