1
|
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.
Collapse
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
| |
Collapse
|
2
|
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.
Collapse
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
| |
Collapse
|
3
|
Lin P, You YK, Liu JY, Yang F, Cai QC, Jiang Y, Shen JJ. [Clinical efficacy and prognostic risk factors of salvage liver transplantation, rehepatectomy, and local ablation in the treatment of postoperative recurrence of hepatocellular carcinoma]. Zhonghua Gan Zang Bing Za Zhi 2023; 31:155-160. [PMID: 37137830 DOI: 10.3760/cma.j.cn501113-20210727-00364] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Objective: To investigate and analyze the clinical efficacy of salvage liver transplantation (SLT), rehepatectomy (RH), local ablation (LA), and prognostic risk factors in patients with postoperative recurrence of hepatocellular carcinoma. Methods: Clinical data of 145 patients with recurrent liver cancer in the 900th Hospital of the Joint Logistics Support Force of the People's Liberation Army from January 2005 to June 2018 were retrospectively collected. SLT group, RH group, and LA group included 25, 44, and 76 cases, respectively. Follow-up and statistics were recorded on the overall survival rate, relapse-free survival rate, and complications of the three groups of patients at 1, 2, and 3 years after surgery. Univariate and multivariate COX analyses were used to analyze the prognostic risk factors in patients with recurrent HCC. Results: The overall survival rates of 1, 2, and 3 years following surgery in the SLT, RH, and LA groups were 100.0%, 84.0%, 72.0%, 95.5%, 77.3%, 65.9%, 90.8%, 76.3%, and 63.2%, respectively, when the recurrence of liver cancer met the Milan criteria. The overall survival rate did not differ statistically between SLT and RH (P = 0.303) or between RH and LA (P = 0.152). There were statistically significant differences in recurrence-free survival between SLT and RH or RH and LA (P = 0.046). There was no statistically significant difference in the incidence of complications between SLT and RH or RH and LA (P > 0.017). Age > 65 years was an independent risk factor affecting the overall survival rate in patients with recurrent HCC. Age > 65 years and recurrence time < 24 months were independent risk factors affecting the recurrence-free survival rate in patients with recurrent HCC. Conclusion: SLT is the best treatment option when the recurrence of HCC meets Milan's criteria. RH and LA are the appropriate treatment plans for recurrent HCC when the liver source is limited.
Collapse
Affiliation(s)
- P Lin
- Fuzhou Clinical Medical College of Fujian Medical University, 900th Hospital of the Joint Logistics Team, PLA, Fuzhou 350025, China
| | - Y K You
- Fuzhou Clinical Medical College of Fujian Medical University, 900th Hospital of the Joint Logistics Team, PLA, Fuzhou 350025, China
| | - J Y Liu
- Department of Hepatobiliary Surgery, 900th Hospital of the Joint Logistics Team, PLA, Fuzhou 350025, China
| | - F Yang
- Department of Hepatobiliary Surgery, 900th Hospital of the Joint Logistics Team, PLA, Fuzhou 350025, China
| | - Q C Cai
- Department of Hepatobiliary Surgery, 900th Hospital of the Joint Logistics Team, PLA, Fuzhou 350025, China
| | - Y Jiang
- Department of Hepatobiliary Surgery, 900th Hospital of the Joint Logistics Team, PLA, Fuzhou 350025, China
| | - J J Shen
- Department of Hepatobiliary Surgery, 900th Hospital of the Joint Logistics Team, PLA, Fuzhou 350025, China
| |
Collapse
|
4
|
Cai QC, Li DL, Zhang Y, Liu YY, Fang P, Zheng SQ, Zhang YY, Yang YK, Hou C, Gao CW, Zhu QS, Cao CH. Expression level comparison of marker genes related to early embryonic development and tumor growth. Oncol Lett 2022; 24:444. [DOI: 10.3892/ol.2022.13564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 08/31/2022] [Indexed: 11/06/2022] Open
Affiliation(s)
- Qiu-Chen Cai
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650500, P.R. China
| | - Da-Lun Li
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650500, P.R. China
| | - Ying Zhang
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650500, P.R. China
| | - Yun-Yi Liu
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650500, P.R. China
| | - Pei Fang
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650500, P.R. China
| | - Si-Qin Zheng
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650500, P.R. China
| | - Yue-Yan Zhang
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650500, P.R. China
| | - Ya-Kun Yang
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650500, P.R. China
| | - Chun Hou
- School of Ecology and Environmental Science, Yunnan University, Kunming, Yunnan 650500, P.R. China
| | - Cheng-Wei Gao
- School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650500, P.R. China
| | - Qi-Shun Zhu
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650500, P.R. China
| | - Chuan-Hai Cao
- Taneja College of Pharmacy, University of South Florida, Tampa, FL 33612, USA
| |
Collapse
|
5
|
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.
Collapse
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
| |
Collapse
|
6
|
Li HJ, Wang TZ, Hou C, Liu HY, Zhang Y, Xue ZZ, Cai QC, Chen DM, Gao CW, Yang JL, Cong L, Chen Y, Yao Q, Zhu QS, Cao C. Artemether Attenuates Aβ25-35-Induced Cognitive Impairments by Downregulating Aβ, BACE1, mTOR and Tau Proteins. Clin Lab 2021; 67. [PMID: 34655202 DOI: 10.7754/clin.lab.2021.201212] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND Alzheimer's disease (AD) is clinically characterized as a progressive cognitive impairment and behavioral disorder. Pathological hallmarks of AD include extracellular senile plaques (SPs), intracellular neurofibrillary tangles (NFTs) and massive neuronal loss. Although the exact cause of AD is not well understood, a mounting body of evidence has demonstrated that the pathogenesis of AD is associated with oxidative stress, neu-roinflammation, and amyloid beta (Aβ) induced neural apoptosis. Moreover, overexpression of β-secretase 1 (BACE1), Aβ, mammalian target of rapamycin (mTOR), and Tau proteins are closely related to cognitive symptoms in AD. Studies have demonstrated that artemether, an antimalarial drug with acceptable side effects, possesses protective effects against neuroinflammation and oxidative stress. Importantly, artemether can easily penetrate the blood brain barrier, thereby representing an ideal drug candidate for AD treatment. METHODS The effect of artemether on memory protection and the associated molecular mechanisms were investigated in an Aβ25-35 induced cognitive impairments rat model. RESULTS Results of the in vivo study showed that oral administration of artemether significantly attenuated Aβ25-35-induced cognitive impairment in rats. Results of the in vitro study revealed that artemether significantly downregulated the endogenous expression of Aβ, BACE1, mTOR, and Tau proteins in N2a cells. CONCLUSIONS The beneficial effect of artemether against Aβ 25-35-induced cognitive impairments was attributable to the downregulation of the expression of Aβ, BACE1, mTOR, and Tau proteins, suggesting the potential of artemether as an effective, neuronal protective, and multi-targeted drug candidate for AD treatment.
Collapse
|
7
|
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.
Collapse
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.
| |
Collapse
|
8
|
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.
Collapse
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
| |
Collapse
|
9
|
Chen Y, Hou C, Zhao LX, Cai QC, Zhang Y, Li DL, Tang Y, Liu HY, Liu YY, Zhang YY, Yang YK, Gao CW, Yao Q, Zhu QS, Cao CH. The Association of microRNA-34a With High Incidence and Metastasis of Lung Cancer in Gejiu and Xuanwei Yunnan. Front Oncol 2021; 11:619346. [PMID: 33796457 PMCID: PMC8008071 DOI: 10.3389/fonc.2021.619346] [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: 10/29/2020] [Accepted: 01/19/2021] [Indexed: 01/22/2023] Open
Abstract
The incidence and associated mortality of lung cancer in tin miners in Gejiu County and farmers in Xuanwei Country, Yunnan Province have been very high in the world. Current published literatures on the molecular mechanisms of lung cancer initiation and progression in Gejiu and Xuanwei County are still controversial. Studies confirmed that microRNA-34a (miR-34a) functioned as a vital tumor suppressor in tumorigenesis and progression. However, the role and precise mechanisms of miR-34a and its regulatory gene network in initiation and progression of lung cancer in Gejiu and Xuanwei County, Yunnan Province, have not been elucidated. In the current study, we first found that miR-34a was downregulated in Gejiu lung squamous carcinoma YTMLC-90, Xuanwei lung adenocarcinoma XWLC-05, and other non-small cell lung carcinoma (NSCLC) cell lines, and miR-34a overexpression inhibited cell proliferation, migration and invasion, as well as induced cell apoptosis in YTMLC-90 and XWLC-05 cells. Our findings revealed that miR-34a is critical and cannot be considered as the area-specific non-coding RNA in initiation and progression of lung cancer in Gejiu and Xuanwei County. Next we revealed that miR-34a overexpression suppressed lung cancer growth and metastasis partially via increasing PTEN but reducing CDK6 expression that might lead to subsequent inactivation of PI3K/AKT pathway. Furthermore, our findings demonstrated that YY1 functioned as a tumor suppressor gene in initiation and progression of lung cancer in Gejiu and Xuanwei County. In conclusion, our findings in the study confirmed that miR-34a overexpression could simultaneously suppress tumor growth and metastasis and play a vital role in tumorigenesis and progression of NSCLC via increasing PTEN and YY1 expression, but decreasing CDK6. Most interestingly, our findings also raised doubts about the current ideas about these area-specific diseases.
Collapse
Affiliation(s)
- Yan Chen
- School of Life Sciences, Yunnan University, Kunming, China.,Yunnan Cancer Center, Yunnan Cancer Hospital, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Chun Hou
- School of Life Sciences, Yunnan University, Kunming, China
| | - Liu-Xin Zhao
- School of Life Sciences, 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
| | - Ying Zhang
- School of Life Sciences, Yunnan University, Kunming, China
| | - Da-Lun Li
- School of Life Sciences, Yunnan University, Kunming, China
| | - Yao Tang
- School of Life Sciences, Yunnan University, Kunming, China
| | - Hong-Yu Liu
- School of Life Sciences, Yunnan University, Kunming, China
| | - Yun-Yi Liu
- School of Life Sciences, Yunnan University, Kunming, China
| | - Yue-Yan Zhang
- School of Life Sciences, Yunnan University, Kunming, China
| | - Ya-Kun Yang
- School of Life Sciences, Yunnan University, Kunming, China
| | - Cheng-Wei Gao
- School of Chemical Science and Technology, Yunnan University, Kunming, China
| | - Qian Yao
- Yunnan Cancer Center, Yunnan Cancer Hospital, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Qi-Shun Zhu
- 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
| | - Chuan-Hai Cao
- Taneja College of Pharmacy, University of South Florida, Tampa, FL, United States
| |
Collapse
|
10
|
Chen Y, Yang JL, Xue ZZ, Cai QC, Hou C, Li HJ, Zhao LX, Zhang Y, Gao CW, Cong L, Wang TZ, Chen DM, Li GS, Luo SQ, Yao Q, Yang CJ, Zhu QS, Cao CH. Effects and mechanism of microRNA‑218 against lung cancer. Mol Med Rep 2020; 23:28. [PMID: 33179084 PMCID: PMC7673340 DOI: 10.3892/mmr.2020.11666] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 07/08/2020] [Indexed: 12/22/2022] Open
Abstract
Lung cancer is the most prevalent and observed type of cancer in Xuanwei County, Yunnan, South China. Lung cancer in this area is called Xuanwei lung cancer. However, its pathogenesis remains largely unknown. To date, a number of studies have shown that microRNA (miR)‑218 functions as a tumor suppressor in multiple types of cancer. However, the role of miR‑218 and its regulatory gene network in Xuanwei lung cancer have yet to be investigated. The current study identified that the expression levels of miR‑218 in XWLC‑05 cells were markedly lower compared with those in immortalized lung epithelial BEAS‑2B cells. The present study also demonstrated that overexpression of miR‑218 could decrease cell proliferation, invasion, viability and migration in Xuanwei lung cancer cell line XWLC‑05 and NSCLC cell line NCI‑H157. Additionally, the results revealed that overexpression of miR‑218 could induce XWLC‑05 and NCI‑H157 cell apoptosis by arresting the cell cycle at G2/M phase. Finally, the present study demonstrated that overexpression of miR‑218 could lead to a significant increase in phosphatase and tensin homolog (<em>PTEN</em>) and YY1 transcription factor (<em>YY1</em>), and a decrease in B‑cell lymphoma 2 (<em>BCL‑2</em>) and BMI1 proto‑oncogene, polycomb ring finger (<em>BMI‑1</em>) at the mRNA and protein level in XWLC‑05 and NCI‑H157 cell lines. However, we did not observe any remarkable difference in the roles of miR‑218 and miR‑218‑mediated regulation of <em>BCL‑2</em>, <em>BMI‑1</em>, <em>PTEN</em> and <em>YY1</em> expression in the progression of Xuanwei lung cancer. In conclusion, miR‑218 could simultaneously suppress cell proliferation and tumor invasiveness and induce cell apoptosis by increasing <em>PTEN</em> and <em>YY1</em> expression, while decreasing <em>BCL‑2</em> and <em>BMI‑1</em> in Xuanwei lung cancer. The results demonstrated that miR‑218 might serve a vital role in tumorigenesis and progression of Xuanwei lung cancer and overexpression of miR‑218 may be a novel approach for the treatment of Xuanwei lung cancer.
Collapse
Affiliation(s)
- Yan Chen
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650091, P.R. China
| | - Ji-Lin Yang
- The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650031, P.R. China
| | - Zhen-Zhen Xue
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650091, P.R. China
| | - Qiu-Chen Cai
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650091, P.R. China
| | - Chun Hou
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650091, P.R. China
| | - Hong-Juan Li
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650091, P.R. China
| | - Liu-Xin Zhao
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650091, P.R. China
| | - Yin Zhang
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650091, P.R. China
| | - Cheng-Wei Gao
- School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, P.R. China
| | - Li Cong
- YinMore Biotech Co., Ltd., Kunming, Yunnan 650224, P.R. China
| | - Tian-Zuo Wang
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650091, P.R. China
| | - Dong-Mei Chen
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650091, P.R. China
| | - Guo-Sheng Li
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650091, P.R. China
| | - Shi-Qing Luo
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650091, P.R. China
| | - Qian Yao
- Yunnan Cancer Hospital and The Third Affiliated Hospital of Kunming Medical University and Yunnan Cancer Center, Kunming, Yunnan 650118, P.R. China
| | - Chan-Juan Yang
- YinMore Biotech Co., Ltd., Kunming, Yunnan 650224, P.R. China
| | - Qi-Shun Zhu
- School of Life Sciences, Yunnan University, Kunming, Yunnan 650091, P.R. China
| | - Chuan-Hai Cao
- Byrd Alzheimer's Institute, University of South Florida, Tampa, FL 33613, USA
| |
Collapse
|
11
|
Dong SM, Cui JH, Zhang W, Zhang XW, Kou TC, Cai QC, Xu S, You S, Yu DS, Ding L, Lai JH, Li M, Luo KJ. Inhibition of translation initiation factor eIF4A is required for apoptosis mediated by Microplitis bicoloratus bracovirus. Arch Insect Biochem Physiol 2017; 96:e21423. [PMID: 28940716 DOI: 10.1002/arch.21423] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Apoptotic hemocytes induced by Microplitis bicoloratus parasitism have been reported, and M. bicoloratus bracovirus (MbBV) is known to be the apoptosis inducer. However, the mechanism how MbBV regulates apoptosis remains unclear. eIF4A, one of translation initiation factors, was found from a Spodoptera litura transcriptome, the expression of which in the parasitized hemocytes of S. litura was inhibited in RT-qPCR analysis. The western blot also illustrated eIF4A at 6-day post-parasitization was inhibited in hemocytes. For testing interaction of MbBV-eIF4A-apoptosis, a cDNA clone encoding 1,266 bp of eIF4A was obtained from S. litura hemocytes and sequenced. Then, a 48 kDa V5-fusion protein of the eIF4A was detected by using the anti-V5 antibody at 72-h post-transfection in the High Five cells, which is located in the cell cytoplasm. In vitro, overexpression of eIF4A rescued the apoptotic High Five cells induced by MbBV. Conversely, in vivo, loss of eIF4A proteins by dsRNA feeding increased apoptosis of hemocytes. Furthermore, RNAi and parasitism significantly increased apoptosis of hemocytes in S. litura. These findings suggested that MbBV inhibited the expression of eIF4A, which was required for apoptosis mediated by MbBV. This study will contribute to biological pest control and enhance our understanding of molecular mechanisms underlying polydnavirus-parasitoid-host interaction.
Collapse
Affiliation(s)
- Shu-Mei Dong
- Key Laboratory for Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, P.R. China
| | - Ji-Hui Cui
- Key Laboratory for Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, P.R. China
| | - Wei Zhang
- Key Laboratory for Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, P.R. China
| | - Xue-Wen Zhang
- Key Laboratory for Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, P.R. China
| | - Tian-Chao Kou
- Key Laboratory for Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, P.R. China
| | - Qiu-Chen Cai
- Key Laboratory for Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, P.R. China
| | - Sha Xu
- Key Laboratory for Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, P.R. China
| | - Shan You
- Key Laboratory for Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, P.R. China
| | - Dong-Shuai Yu
- Key Laboratory for Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, P.R. China
| | - Lei Ding
- Key Laboratory for Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, P.R. China
| | - Jian-Hua Lai
- Key Laboratory for Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, P.R. China
| | - Ming Li
- Key Laboratory for Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, P.R. China
| | - Kai-Jun Luo
- Key Laboratory for Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, P.R. China
| |
Collapse
|
12
|
Lin YH, Cai ZS, Jiang Y, Lü LZ, Zhang XJ, Cai QC. Perioperative risk factors for pulmonary complications after liver transplantation. J Int Med Res 2011; 38:1845-55. [PMID: 21309501 DOI: 10.1177/147323001003800532] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Using monofactorial and multivariate logistic regression analyses, the correlation of perioperative risk factors with postoperative pulmonary complications (PPCs) within 1 month after orthotopic liver transplantation (OLT) was investigated. Data on 107 patients (median age 46.8 years, 72% male) with end-stage liver disease who received OLT were retrospectively analysed. The incidence of PPCs was 60.7%. Overall mortality was 13.1% and pulmonary causes accounted for 85.7% of deaths. Mortality was 18.5% and 4.8% for patients with and without pulmonary complications, respectively. Independent risk factors for PPCs were a preoperative model for end-stage liver disease (MELD) score > or =25, intraoperative fluid transfusion volume > 10 1 and intraoperative blood transfusion volume > 4 l. A fluid balance of < or = -300 ml for > or =2 days of the first 3 days after surgery was protective. Other variables studied did not predict PPCs. It was concluded that improving the patient's preoperative medical condition, restricting intraoperative transfusion volumes and maintaining a negative fluid balance in the first 3 days after operation may decrease PPCs.
Collapse
Affiliation(s)
- Y H Lin
- Fuzong Clinical College, Fujian Medical University, Fuzhou, Fujian Province, China
| | | | | | | | | | | |
Collapse
|