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Ramagoma RB, Makgoo L, Mbita Z. KLHL20 and its role in cell homeostasis: A new perspective and therapeutic potential. Life Sci 2024; 357:123041. [PMID: 39233199 DOI: 10.1016/j.lfs.2024.123041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 08/22/2024] [Accepted: 08/31/2024] [Indexed: 09/06/2024]
Abstract
Ubiquitin ligases are proteins with the ability to trigger non-degradative signaling or proteasomal destruction by attracting substrates and facilitating ubiquitin transfer onto target proteins. Over the years, there has been a continuous discovery of new ubiquitin ligases, and Kelch-like protein 20 (KLHL20) is one of the most recent discoveries that have several biological roles which include its role in ubiquitin ligase activities. KLHL20 binds as a substrate component of ubiquitin ligase Cullin3 (Cul3). Several substrates for ubiquitin ligases (KLHL20 based) have been reported, these include Unc-51 Like Autophagy Activating Kinase 1 (ULK1), promyelocytic leukemia (PML), and Death Associated Protein Kinase 1 (DAPK1). KLHL20 shows multiple cell functions linked to several human diseases through ubiquitination of these substrates. Current literature shows that KLHL20 ubiquitin ligase regulates malignancies in humans and also suggests how important it is to develop regulating agents for tumour-suppressive KLHL20 to prevent tumourigenesis, Recent research has highlighted its potential therapeutic implications in several areas. In oncology, KLHL20's regulatory role in protein degradation pathways suggests that its targeting could offer novel strategies for cancer treatment by modulating the stability of proteins involved in tumour growth and survival. In neurodegenerative diseases, KLHL20's function in maintaining protein homeostasis positions it as a potential target for therapies aimed at managing protein aggregation and cellular stress. Here, we review the functions of KLHL20 during the carcinogenesis process, looking at its role in cancer progression, and regulation of ubiquitination events mediated by KLHL20 in human cancers, as well as its potential therapeutic interventions.
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Affiliation(s)
- Rolivhuwa Bishop Ramagoma
- The University of Limpopo, Department of Biochemistry, Microbiology, and Biotechnology, Private Bag x1106, Sovenga 0727, South Africa
| | - Lilian Makgoo
- The University of Limpopo, Department of Biochemistry, Microbiology, and Biotechnology, Private Bag x1106, Sovenga 0727, South Africa
| | - Zukile Mbita
- The University of Limpopo, Department of Biochemistry, Microbiology, and Biotechnology, Private Bag x1106, Sovenga 0727, South Africa.
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Zeng J, Zhao L, Lu Y, Zuo T, Huang B, Wang D, Zhou Y, Lei Z, Mo Y, Liu Y, Gao J. Agrobacterium-mediated transformation of B. juncea reveals that BjuLKP2 functions in plant yellowing. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2024; 137:200. [PMID: 39122841 DOI: 10.1007/s00122-024-04707-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Accepted: 07/27/2024] [Indexed: 08/12/2024]
Abstract
KEY MESSAGE A stable Agrobacterium-mediated transformation system was constructed for B. juncea, and BjuLKP2 was overexpressed, leading to plant yellowing. A stable and efficient transformation system is necessary to verify gene functions in plants. To establish an Agrobacterium-mediated transformation system for B. juncea, various factors, including the explant types, hormone combination and concentration, infection time and concentration, were optimized. Eventually, a reliable system was established, and two BjuLKP2 overexpression (OE) lines, which displayed yellowing of cotyledons, shoot tips, leaves and flower buds, as well as a decrease in total chlorophyll content, were generated. qRT-PCR assays revealed significant upregulation of five chlorophyll synthesis genes and downregulation of one gene in the BjuLKP2 OE line. Furthermore, antioxidant capacity assays revealed reduced activities of APX, CAT and SOD, while POD activity increased in the BjuLKP2 OE26. Additionally, the kinetic determination of chlorophyll fluorescence induction suggested a decrease in the photosynthetic ability of BjuLKP2 OE26. GUS assays revealed the expression of BjuLKP2 in various tissues, including the roots, hypocotyls, cotyledons, leaf vasculature, trichomes, sepals, petals, filaments, styles and stigma bases, but not in seeds. Scanning electron revealed alterations in chloroplast ultrastructure in both the sponge and palisade tissue. Collectively, these findings indicate that BjuLKP2 plays a role in plant yellowing through a reduction in chlorophyll content and changes in chloroplasts structure.
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Affiliation(s)
- Jing Zeng
- School of Life Advanced Agriculture Bioengineering, Yangtze Normal University, Chongqing, 408100, People's Republic of China
| | - Liang Zhao
- Department of Biochemistry, Microbiology and Immunology, University of Saskatchewan, Saskatoon, SK, S7N 5E5, Canada
| | - Yuanqing Lu
- School of Life Advanced Agriculture Bioengineering, Yangtze Normal University, Chongqing, 408100, People's Republic of China
| | - Tonghong Zuo
- College of Agronomy and Biotechnology, Southwest University, Chongqing, 400716, People's Republic of China
| | - Baowen Huang
- Key Laboratory of Plant Hormones and Molecular Breeding of Chongqing, School of Life Sciences, Chongqing University, Chongqing, 401331, People's Republic of China
- Center of Plant Functional Genomics, Institute of Advanced Interdisciplinary Studies, Chongqing University, Chongqing, 401331, People's Republic of China
| | - Diandong Wang
- School of Life Advanced Agriculture Bioengineering, Yangtze Normal University, Chongqing, 408100, People's Republic of China
| | - Yawen Zhou
- School of Life Advanced Agriculture Bioengineering, Yangtze Normal University, Chongqing, 408100, People's Republic of China
| | - Zhongxin Lei
- School of Life Advanced Agriculture Bioengineering, Yangtze Normal University, Chongqing, 408100, People's Republic of China
| | - Yanling Mo
- School of Life Advanced Agriculture Bioengineering, Yangtze Normal University, Chongqing, 408100, People's Republic of China
| | - Yihua Liu
- School of Life Advanced Agriculture Bioengineering, Yangtze Normal University, Chongqing, 408100, People's Republic of China
| | - Jian Gao
- School of Life Advanced Agriculture Bioengineering, Yangtze Normal University, Chongqing, 408100, People's Republic of China.
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Ślusarz MJ. How kelch domain-containing protein 3 distinguishes between the C-end degron of herpesviral protein UL49.5 and its mutants - Insights from molecular dynamics. Bioorg Med Chem 2024; 109:117795. [PMID: 38878709 DOI: 10.1016/j.bmc.2024.117795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 05/13/2024] [Accepted: 06/07/2024] [Indexed: 06/30/2024]
Abstract
The C-terminal residues of proteins can function as degrons recognized by ubiquitin ligases for proteasomal degradation. Kelch domain-containing protein 3 (KLHDC3) is a substrate receptor for E3 ubiquitin ligase (Cullin2-RING ligase) that targets the C-terminal degrons. UL49.5 is 96 amino-acid type 1 transmembrane protein from bovine herpesvirus 1. Herpesviruses have evolved highly effective strategies to evade the antiviral immune response. One of these strategies is inhibition of the antigen processing and presentation pathway by MHC I, thereby reducing the presentation of the antigenic peptides on the surface of the infected cell. Recently, it has been demonstrated that UL49.5 triggers TAP degradation via recruiting the E3 ubiquitin ligase to TAP. Moreover, the mutagenesis revealed that the mutations within the UL49.5 C-degron sequence (93RGRG96) affect binding of UL49.5 to KLHDC3. In this work the molecular dynamics of KLHDC3 in complexes with the C-terminal decapeptide of the herpesviral protein UL4.95 and its three mutants has been employed to provide a framework for understanding molecular recognition of UL49.5 by KLHDC3. The findings of this study give insights into the interactions of the various degrons with KLHDC3. During the molecular dynamics, an active RGKG mutant adopts a conformation similar to that of the wild type decapeptide, whereas the conformations of two inactive mutants, KGRG and RGRD are significantly different. Both R93K and G96D mutations impair the interactions of the C-terminal glycine with KLHDC3. The findings of this study expand the existing knowledge about the mechanism of protein recognition by Cullin2-RING ligases thus contributing to the design of antiviral and anticancer drugs that can selectively promote or inhibit degradation of the proteins of interest.
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Affiliation(s)
- Magdalena J Ślusarz
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland.
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Shah Zaib Saleem R, Schwalm MP, Knapp S. Expanding the ligand spaces for E3 ligases for the design of protein degraders. Bioorg Med Chem 2024; 105:117718. [PMID: 38621319 DOI: 10.1016/j.bmc.2024.117718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 03/26/2024] [Accepted: 04/10/2024] [Indexed: 04/17/2024]
Abstract
Targeted protein degradation (TPD) has recently emerged as an exciting new drug modality. However, the strategy of developing small molecule-based protein degraders has evolved over the past two decades and has now established molecular tags that are already in clinical use, as well as chimeric molecules, PROteolysis TArgeting Chimeras (PROTACs), based mainly on ligand systems developed for the two E3 ligases CRBN and VHL. The large size of the human E3 ligase family suggests that PROTACs can be developed by targeting a large diversity of E3 ligases, some of which have restricted expression patterns with the potential to design disease- or tissue-specific degraders. Indeed, many new E3 ligands have been published recently, confirming the druggability of E3 ligases. This review summarises recent data on E3 ligases and highlights the challenges in developing these molecules into efficient PROTACs rivalling the established degrader systems.
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Affiliation(s)
- Rahman Shah Zaib Saleem
- Department of Chemistry & Chemical Engineering, SBA School of Sciences & Engineering, LUMS, Pakistan
| | - Martin P Schwalm
- Institut für Pharmazeutische Chemie, Goethe-University Frankfurt, Biozentrum, Max-von-Laue-Str. 9, 60438 Frankfurt am Main, Germany; Structural Genomics Consortium, Goethe-University Frankfurt, Buchmann Institute for Life Sciences, Max-von-Laue-Str. 15, 60438 Frankfurt am Main, Germany; German Cancer Consortium (DKTK) partner site Frankfurt/Mainz, Frankfurt, Germany
| | - Stefan Knapp
- Institut für Pharmazeutische Chemie, Goethe-University Frankfurt, Biozentrum, Max-von-Laue-Str. 9, 60438 Frankfurt am Main, Germany; Structural Genomics Consortium, Goethe-University Frankfurt, Buchmann Institute for Life Sciences, Max-von-Laue-Str. 15, 60438 Frankfurt am Main, Germany; German Cancer Consortium (DKTK) partner site Frankfurt/Mainz, Frankfurt, Germany.
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Lê HG, Kim W, Kang JM, Võ TC, Yoo WG, Cheong H, Na BK. The anti-amoebic activity of Pinus densiflora leaf extract against the brain-eating amoeba Naegleria fowleri. PARASITES, HOSTS AND DISEASES 2024; 62:169-179. [PMID: 38835258 DOI: 10.3347/phd.23103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 02/14/2024] [Indexed: 06/06/2024]
Abstract
Naegleria fowleri invades the brain and causes a fatal primary amoebic meningoencephalitis (PAM). Despite its high mortality rate of approximately 97%, an effective therapeutic drug for PAM has not been developed. Approaches with miltefosine, amphotericin B, and other antimicrobials have been clinically attempted to treat PAM, but their therapeutic efficacy remains unclear. The development of an effective and safe therapeutic drug for PAM is urgently needed. In this study, we investigated the anti-amoebic activity of Pinus densiflora leaf extract (PLE) against N. fowleri. PLE induced significant morphological changes in N. fowleri trophozoites, resulting in the death of the amoeba. The IC50 of PLE on N. fowleri was 62.3±0.95 μg/ml. Alternatively, PLE did not significantly affect the viability of the rat glial cell line C6. Transcriptome analysis revealed differentially expressed genes (DEGs) between PLE-treated and non-treated amoebae. A total of 5,846 DEGs were identified, of which 2,189 were upregulated, and 3,657 were downregulated in the PLE-treated amoebae. The DEGs were categorized into biological process (1,742 genes), cellular component (1,237 genes), and molecular function (846 genes) based on the gene ontology analysis, indicating that PLE may have dramatically altered the biological and cellular functions of the amoeba and contributed to their death. These results suggest that PLE has anti-N. fowleri activity and may be considered as a potential candidate for the development of therapeutic drugs for PAM. It may also be used as a supplement compound to enhance the therapeutic efficacy of drugs currently used to treat PAM.
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Affiliation(s)
- Hương Giang Lê
- Department of Parasitology and Tropical Medicine, Institute of Health Science, Gyeongsang National University College of Medicine, Jinju 52727, Korea
- Department of Convergence Medical Science, Gyeongsang National University, Jinju 52727, Korea
| | - Woong Kim
- Department of Biomedical Science, Chosun University, Gwangju 61453, Korea
- Institute of Well-Aging Medicare, Chosun University, Gwangju 61452, Korea
| | - Jung-Mi Kang
- Department of Parasitology and Tropical Medicine, Institute of Health Science, Gyeongsang National University College of Medicine, Jinju 52727, Korea
| | - Tuấn Cường Võ
- Department of Parasitology and Tropical Medicine, Institute of Health Science, Gyeongsang National University College of Medicine, Jinju 52727, Korea
- Department of Convergence Medical Science, Gyeongsang National University, Jinju 52727, Korea
| | - Won Gi Yoo
- Department of Parasitology and Tropical Medicine, Institute of Health Science, Gyeongsang National University College of Medicine, Jinju 52727, Korea
- Department of Convergence Medical Science, Gyeongsang National University, Jinju 52727, Korea
| | - Hyeonsook Cheong
- Department of Biomedical Science, Chosun University, Gwangju 61453, Korea
| | - Byoung-Kuk Na
- Department of Parasitology and Tropical Medicine, Institute of Health Science, Gyeongsang National University College of Medicine, Jinju 52727, Korea
- Department of Convergence Medical Science, Gyeongsang National University, Jinju 52727, Korea
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Yang J, Long S, Hide G, Lun ZR, Lai DH. Apicomplexa micropore: history, function, and formation. Trends Parasitol 2024; 40:416-426. [PMID: 38637184 DOI: 10.1016/j.pt.2024.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 03/12/2024] [Accepted: 03/21/2024] [Indexed: 04/20/2024]
Abstract
The micropore, a mysterious structure found in apicomplexan species, was recently shown to be essential for nutrient acquisition in Plasmodium falciparum and Toxoplasma gondii. However, the differences between the micropores of these two parasites questions the nature of a general apicomplexan micropore structure and whether the formation process model from Plasmodium can be applied to other apicomplexans. We analyzed the literature on different apicomplexan micropores and found that T. gondii probably harbors a more representative micropore type than the more widely studied ones in Plasmodium. Using recent knowledge of the Kelch 13 (K13) protein interactome and gene depletion phenotypes in the T. gondii micropore, we propose a model of micropore formation, thus enriching our wider understanding of micropore protein function.
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Affiliation(s)
- Jiong Yang
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Shaojun Long
- National Animal Protozoa Laboratory and School of Veterinary Medicine, China Agricultural University, Beijing 100193, P. R. China
| | - Geoff Hide
- Biomedical Research and Innovation Centre, School of Science, Engineering, and Environment, University of Salford, Salford M5 4WT, UK
| | - Zhao-Rong Lun
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - De-Hua Lai
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, P. R. China.
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Ajibaye O, Olukosi YA, Oriero EC, Oboh MA, Iwalokun B, Nwankwo IC, Nnam CF, Adaramoye OV, Chukwemeka S, Okanazu J, Gabriel E, Balogun EO, Amambua-Ngwa A. Detection of novel Plasmodium falciparum coronin gene mutations in a recrudescent ACT-treated patient in South-Western Nigeria. Front Cell Infect Microbiol 2024; 14:1366563. [PMID: 38716192 PMCID: PMC11074373 DOI: 10.3389/fcimb.2024.1366563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Accepted: 03/28/2024] [Indexed: 05/12/2024] Open
Abstract
Background Routine surveillance for antimalarial drug resistance is critical to sustaining the efficacy of artemisinin-based Combination Therapies (ACTs). Plasmodium falciparum kelch-13 (Pfkelch-13) and non-Pfkelch-13 artemisinin (ART) resistance-associated mutations are uncommon in Africa. We investigated polymorphisms in Plasmodium falciparum actin-binding protein (Pfcoronin) associated with in vivo reduced sensitivity to ART in Nigeria. Methods Fifty-two P. falciparum malaria subjects who met the inclusion criteria were followed up in a 28-day therapeutic efficacy study of artemether-lumefantrine in Lagos, Nigeria. Parasite detection was done by microscopy and molecular diagnostic approaches involving PCR amplification of genes for Pf18S rRNA, varATS, telomere-associated repetitive elements-2 (TARE-2). Pfcoronin and Pfkelch-13 genes were sequenced bi-directionally while clonality of infections was determined using 12 neutral P. falciparum microsatellite loci and msp2 analyses. Antimalarial drugs (sulfadoxine-pyrimethamine, amodiaquine, chloroquine and some quinolones) resistance variants (DHFR_51, DHFR_59, DHFR_108, DHFR_164, MDR1_86, MDR1_184, DHPS_581 and DHPS_613) were genotyped by high-resolution melting (HRM) analysis. Results A total of 7 (26.92%) cases were identified either as early treatment failure, late parasitological failure or late clinical failure. Of the four post-treatment infections identified as recrudescence by msp2 genotypes, only one was classified as recrudescence by multilocus microsatellites genotyping. Microsatellite analysis revealed no significant difference in the mean allelic diversity, He, (P = 0.19, Mann-Whitney test). Allele sizes and frequency per locus implicated one isolate. Genetic analysis of this isolate identified two new Pfcoronin SNVs (I68G and L173F) in addition to the P76S earlier reported. Linkage-Disequilibrium as a standardized association index, IAS, between multiple P. falciparum loci revealed significant LD (IAS = 0.2865, P=0.02, Monte-Carlo simulation) around the neutral microsatellite loci. The pfdhfr/pfdhps/pfmdr1 drug resistance-associated haplotypes combinations, (108T/N/51I/164L/59R/581G/86Y/184F), were observed in two samples. Conclusion Pfcoronin mutations identified in this study, with potential to impact parasite clearance, may guide investigations on emerging ART tolerance in Nigeria, and West African endemic countries.
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Affiliation(s)
- Olusola Ajibaye
- Malaria Genomics Research and Training Centre, Department of Biochemistry & Nutrition, Nigerian Institute of Medical Research, Yaba, Lagos, Nigeria
- Medical Research Council Unit, the Gambia – The London School of Hygiene and Tropical Medicine, Fajara, Banjul, Gambia
| | - Yetunde Adeola Olukosi
- Malaria Genomics Research and Training Centre, Department of Biochemistry & Nutrition, Nigerian Institute of Medical Research, Yaba, Lagos, Nigeria
| | - Eniyou C. Oriero
- Medical Research Council Unit, the Gambia – The London School of Hygiene and Tropical Medicine, Fajara, Banjul, Gambia
| | - Mary Aigbiremo Oboh
- Medical Research Council Unit, the Gambia – The London School of Hygiene and Tropical Medicine, Fajara, Banjul, Gambia
| | - Bamidele Iwalokun
- Malaria Genomics Research and Training Centre, Department of Biochemistry & Nutrition, Nigerian Institute of Medical Research, Yaba, Lagos, Nigeria
| | - Ikechukwu Chidiebere Nwankwo
- Center for Molecular Parasitology, Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA, United States
| | - Chinaza Favour Nnam
- Malaria Genomics Research and Training Centre, Department of Biochemistry & Nutrition, Nigerian Institute of Medical Research, Yaba, Lagos, Nigeria
| | - Olawunmi Victoria Adaramoye
- Department of Obstetrics and Gynaecology, Lagos University Teaching Hospital, Idi-araba, Surulere, Lagos, Nigeria
| | - Somadina Chukwemeka
- Malaria Genomics Research and Training Centre, Department of Biochemistry & Nutrition, Nigerian Institute of Medical Research, Yaba, Lagos, Nigeria
| | - Judith Okanazu
- Malaria Genomics Research and Training Centre, Department of Biochemistry & Nutrition, Nigerian Institute of Medical Research, Yaba, Lagos, Nigeria
| | - Eniafe Gabriel
- Malaria Genomics Research and Training Centre, Department of Biochemistry & Nutrition, Nigerian Institute of Medical Research, Yaba, Lagos, Nigeria
| | - Emmanuel Oluwadare Balogun
- Department of Biochemistry, Ahmadu Bello University, Zaria, Nigeria
- Department of Biomedical Chemistry, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan
- Center for Discovery and Innovation in Parasitic Diseases, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, Gilman Drive, La Jolla, CA, United States
| | - Alfred Amambua-Ngwa
- Medical Research Council Unit, the Gambia – The London School of Hygiene and Tropical Medicine, Fajara, Banjul, Gambia
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Zhou Y, Zhang Q, Zhao Z, Hu X, You Q, Jiang Z. Targeting kelch-like (KLHL) proteins: achievements, challenges and perspectives. Eur J Med Chem 2024; 269:116270. [PMID: 38490062 DOI: 10.1016/j.ejmech.2024.116270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 02/07/2024] [Accepted: 02/19/2024] [Indexed: 03/17/2024]
Abstract
Kelch-like proteins (KLHLs) are a large family of BTB-containing proteins. KLHLs function as the substrate adaptor of Cullin 3-RING ligases (CRL3) to recognize substrates. KLHLs play pivotal roles in regulating various physiological and pathological processes by modulating the ubiquitination of their respective substrates. Mounting evidence indicates that mutations or abnormal expression of KLHLs are associated with various human diseases. Targeting KLHLs is a viable strategy for deciphering the KLHLs-related pathways and devising therapies for associated diseases. Here, we comprehensively review the known KLHLs inhibitors to date and the brilliant ideas underlying their development.
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Affiliation(s)
- Yangguo Zhou
- Jiang Su Key Laboratory of Drug Design and Optimization and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Qiong Zhang
- Jiang Su Key Laboratory of Drug Design and Optimization and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Ziquan Zhao
- Jiang Su Key Laboratory of Drug Design and Optimization and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Xiuqi Hu
- Jiang Su Key Laboratory of Drug Design and Optimization and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Qidong You
- Jiang Su Key Laboratory of Drug Design and Optimization and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China.
| | - Zhengyu Jiang
- Jiang Su Key Laboratory of Drug Design and Optimization and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China.
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Wu XT, Gao XW, Wang QQ, He K, Bilal MS, Dong H, Tang YD, Ding HY, Li YB, Tang XY, Long S. The plant-like protein phosphatase PPKL regulates parasite replication and morphology in Toxoplasma gondii. Parasit Vectors 2024; 17:142. [PMID: 38500196 PMCID: PMC10949797 DOI: 10.1186/s13071-024-06135-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 01/12/2024] [Indexed: 03/20/2024] Open
Abstract
BACKGROUND The protozoan parasite Toxoplasma gondii encodes dozens of phosphatases, among which a plant-like phosphatase absent from mammalian genomes named PPKL, which is involved in regulating brassinosteroid signaling in Arabidopsis, was identified in the genome. Among the Apicomplexa parasites, T. gondii is an important and representative pathogen in humans and animals. PPKL was previously identified to modulate the apical integrity and morphology of the ookinetes and parasite motility and transmission in another important parasite, Plasmodium falciparum. However, the exact function of PPKL in the asexual stages of T. gondii remains unknown. METHODS The plant auxin-inducible degron (AID) system was applied to dissect the phenotypes of PPKL in T. gondii. We first analyzed the phenotypes of the AID parasites at an induction time of 24 h, by staining of different organelles using their corresponding markers. These analyses were further conducted for the parasites grown in auxin for 6 and 12 h using a quantitative approach and for the type II strain ME49 of AID parasites. To further understand the phenotypes, the potential protein interactions were analyzed using a proximity biotin labeling approach. The essential role of PPKL in parasite replication was revealed. RESULTS PPKL is localized in the apical region and nucleus and partially distributed in the cytoplasm of the parasite. The phenotyping of PPKL showed its essentiality for parasite replication and morphology. Further dissections demonstrate that PPKL is required for the maturation of daughter parasites in the mother cells, resulting in multiple nuclei in a single parasite. The phenotype of the daughter parasites and parasite morphology were observed in another type of T. gondii strain ME49. The substantial defect in parasite replication and morphology could be rescued by genetic complementation, thus supporting its essential function for PPKL in the formation of parasites. The protein interaction analysis showed the potential interaction of PPKL with diverse proteins, thus explaining the importance of PPKL in the parasite. CONCLUSIONS PPKL plays an important role in the formation of daughter parasites, revealing its subtle involvement in the proper maturation of the daughter parasites during division. Our detailed analysis also demonstrated that depletion of PPKL resulted in elongated tubulin fibers in the parasites. The important roles in the parasites are potentially attributed to the protein interaction mediated by kelch domains on the protein. Taken together, these findings contribute to our understanding of a key phosphatase involved in parasite replication, suggesting the potential of this phosphatase as a pharmaceutic target.
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Affiliation(s)
- Xi-Ting Wu
- National Key Laboratory of Veterinary Public Health and Safety, and School of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Xu-Wen Gao
- National Key Laboratory of Veterinary Public Health and Safety, and School of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Qiang-Qiang Wang
- National Key Laboratory of Veterinary Public Health and Safety, and School of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Kai He
- National Key Laboratory of Veterinary Public Health and Safety, and School of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Muhammad Saqib Bilal
- The Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing, 210095, China
| | - Hui Dong
- National Key Laboratory of Veterinary Public Health and Safety, and School of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Yi-Dan Tang
- National Key Laboratory of Veterinary Public Health and Safety, and School of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Hui-Yong Ding
- National Key Laboratory of Veterinary Public Health and Safety, and School of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Yue-Bao Li
- National Key Laboratory of Veterinary Public Health and Safety, and School of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Xiao-Yan Tang
- National Key Laboratory of Veterinary Public Health and Safety, and School of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Shaojun Long
- National Key Laboratory of Veterinary Public Health and Safety, and School of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
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10
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Liu S, Wei F, Liu R, Xue C, Chen Y, Zhao C, Chen P. A systematic analysis of ARM genes revealed that GhARM144 regulates the resistance against Verticillium dahliae via interaction with GhOSM34. PHYSIOLOGIA PLANTARUM 2024; 176:e14259. [PMID: 38511474 DOI: 10.1111/ppl.14259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 02/15/2024] [Accepted: 03/01/2024] [Indexed: 03/22/2024]
Abstract
Proteins of the armadillo repeat gene family play important roles in plant pathogen response. Here, 169 armadillo (ARM) genes were identified in upland cotton (Gossypium hirsutum). Phylogenetic analysis grouped these into 11 subfamilies, with conserved protein structures within each subfamily. The results signify that the expansion of the gene family occurred via whole genome duplication and dispersed duplication. Expression profiling and network analysis suggest that GhARM144 may regulate cotton resistance to Verticillium dahliae. GhARM144 was upregulated in roots by V. dahliae infection or salicylic acid treatment. This upregulation indicates a negative regulatory role of GhARM144' in the cotton immune responses, potentially by manipulating salicylic acid biosynthesis. Protein interaction studies found that GhARM144 associates with an osmotin-like protein, GhOSM34, at the plasma membrane. Silencing GhOSM34 reduced the resistance to V. dahliae, suggesting it may play a positive regulatory role. The results demonstrate that GhARM144 modulates cotton immunity through interaction with GhOSM34 and salicylic acid signalling. Further study of these proteins may yield insights into disease resistance mechanisms in cotton and other plants.
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Affiliation(s)
- Shichao Liu
- Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wanning, Hainan, China
- Key Laboratory of Genetic Improvement and Quality Regulation for Tropical Spice and Beverage Crops of Hainan Province, Wanning, Hainan, China
| | - Fei Wei
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Henan, China
| | - Ruibing Liu
- Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wanning, Hainan, China
| | - Chao Xue
- Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wanning, Hainan, China
| | - Yining Chen
- College of Cyber Science, Nankai University, Tianjin, China
| | - Chenchen Zhao
- College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Pengyun Chen
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
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11
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Hashemi Haeri H, Schneegans N, Eisenschmidt-Bönn D, Brandt W, Wittstock U, Hinderberger D. Characterization of the active site in the thiocyanate-forming protein from Thlaspi arvense (TaTFP) using EPR spectroscopy. Biol Chem 2024; 405:105-118. [PMID: 37586381 DOI: 10.1515/hsz-2023-0187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 07/19/2023] [Indexed: 08/18/2023]
Abstract
Glucosinolates are plant thioglucosides, which act as chemical defenses. Upon tissue damage, their myrosinase-catalyzed hydrolysis yields aglucones that rearrange to toxic isothiocyanates. Specifier proteins such as thiocyanate-forming protein from Thlaspi arvense (TaTFP) are non-heme iron proteins, which capture the aglucone to form alternative products, e.g. nitriles or thiocyanates. To resolve the electronic state of the bound iron cofactor in TaTFP, we applied continuous wave electron paramagnetic resonance (CW EPR) spectroscopy at X-and Q-band frequencies (∼9.4 and ∼34 GHz). We found characteristic features of high spin and low spin states of a d 5 electronic configuration and local rhombic symmetry during catalysis. We monitored the oxidation states of bound iron during conversion of allylglucosinolate by myrosinase and TaTFP in presence and absence of supplemented Fe2+. Without added Fe2+, most high spin features of bound Fe3+ were preserved, while different g'-values of the low spin part indicated slight rearrangements in the coordination sphere and/or structural geometry. We also examined involvement of the redox pair Fe3+/Fe2 in samples with supplemented Fe2+. The absence of any EPR signal related to Fe3+ or Fe2+ using an iron-binding deficient TaTFP variant allowed us to conclude that recorded EPR signals originated from the bound iron cofactor.
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Affiliation(s)
- Haleh Hashemi Haeri
- Martin Luther University Halle-Wittenberg, Institute of Chemistry, Von-Danckelmann-Platz 4, D-06120 Halle (Saale), Germany
| | - Nicola Schneegans
- Institute of Pharmaceutical Biology, Technische Universität Braunschweig, D-38106 Braunschweig, Germany
| | - Daniela Eisenschmidt-Bönn
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, D-06120 Halle (Saale), Germany
| | - Wolfgang Brandt
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, D-06120 Halle (Saale), Germany
| | - Ute Wittstock
- Institute of Pharmaceutical Biology, Technische Universität Braunschweig, D-38106 Braunschweig, Germany
| | - Dariush Hinderberger
- Martin Luther University Halle-Wittenberg, Institute of Chemistry, Von-Danckelmann-Platz 4, D-06120 Halle (Saale), Germany
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12
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Zhu P, Fan Y, Xu P, Fan G. Bioinformatic Analysis of the BTB Gene Family in Paulownia fortunei and Functional Characterization in Response to Abiotic and Biotic Stresses. PLANTS (BASEL, SWITZERLAND) 2023; 12:4144. [PMID: 38140471 PMCID: PMC10747981 DOI: 10.3390/plants12244144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 12/04/2023] [Accepted: 12/05/2023] [Indexed: 12/24/2023]
Abstract
To learn about the gene structure, phylogenetic evolution, and function under biotic and abiotic stresses of BTB (Bric-a-Brac/Tramtrack/Broad Complex) genes in Paulownia fortunei, a whole-genome sequence evaluation was carried out, and a total of 62 PfBTB genes were identified. The phylogenetic analysis showed that PfBTB proteins are divided into eight groups, and these proteins are highly conserved. PfBTB genes were unevenly distributed on 17 chromosomes. The colinearity analysis found that fragment replication and tandem replication are the main modes of gene amplification in the PfBTB family. The analysis of cis-acting elements suggests that PfBTB genes may be involved in a variety of biological processes. The transcriptomic analysis results showed that PfBTB3/12/14/16/19/36/44 responded to Paulownia witches' broom (PaWB), while PfBTB1/4/17/43 responded to drought stress, and the RT-qPCR results further support the reliability of transcriptome data. In addition, the association analysis between miRNA and transcriptome revealed a 91-pair targeting relationship between miRNAs and PfBTBs. In conclusion, the BTB genes in Paulownia are systematically identified in this research. This work provides useful knowledge to more fully appreciate the potential functions of these genes and their possible roles in the occurrence of PaWB and in response to stress.
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Affiliation(s)
- Peipei Zhu
- College of Forestry, Henan Agricultural University, Zhengzhou 450002, China; (P.Z.); (Y.F.)
- Institute of Paulownia, Henan Agricultural University, Zhengzhou 450002, China
| | - Yujie Fan
- College of Forestry, Henan Agricultural University, Zhengzhou 450002, China; (P.Z.); (Y.F.)
- Institute of Paulownia, Henan Agricultural University, Zhengzhou 450002, China
| | - Pingluo Xu
- College of Forestry, Henan Agricultural University, Zhengzhou 450002, China; (P.Z.); (Y.F.)
- Institute of Paulownia, Henan Agricultural University, Zhengzhou 450002, China
| | - Guoqiang Fan
- College of Forestry, Henan Agricultural University, Zhengzhou 450002, China; (P.Z.); (Y.F.)
- Institute of Paulownia, Henan Agricultural University, Zhengzhou 450002, China
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13
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Yao L, Hao Q, Wang M, Chen Y, Cao H, Zhang Q, Yu K, Jiang Y, Shao Z, Zhou X, Xu Y. KLHL29-mediated DDX3X degradation promotes chemosensitivity by abrogating cell cycle checkpoint in triple-negative breast cancer. Oncogene 2023; 42:3514-3528. [PMID: 37845393 PMCID: PMC10656286 DOI: 10.1038/s41388-023-02858-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 09/24/2023] [Accepted: 10/02/2023] [Indexed: 10/18/2023]
Abstract
Triple-negative breast cancer (TNBC) is a heterogeneous breast cancer subtype and accounts for approximately 15-20% of breast cancer cases. In this study, we identified KLHL29, which is an understudied member of the Kelch-like gene family, as a crucial tumor suppressor that regulates chemosensitivity in TNBC. KLHL29 expression was significantly downregulated in breast cancer tissues compared with adjacent normal tissues, and low levels of KLHL29 were associated with unfavorable prognoses. Ectopic KLHL29 suppressed, while depleting KLHL29 promoted, the growth, proliferation, migration, and invasion of TNBC. Mechanistically, KLHL29 recruited the CUL3 E3-ligase to the RNA-binding protein DDX3X, leading to the proteasomal degradation of the latter. This downregulation of DDX3X resulted in the destabilization of CCND1 mRNA and the consequent cell cycle arrest at G0/G1 phase. Remarkably, the DDX3X inhibitor RK33 combined with platinum-based chemotherapy can synergistically suppress TNBC that usually expresses low levels of KLHL29 and high levels of DDX3X using cancer cell-derived xenograft and patient-derived organoids models. Altogether, we uncovered the potential role for the KLHL29-DDX3X signaling cascade in the regulation of TNBC progression, thus providing a promising combination strategy for overcoming TNBC chemoresistance.
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Affiliation(s)
- Litong Yao
- Department of Breast Surgery, the First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Qian Hao
- Fudan University Shanghai Cancer Center, Fudan University, Shanghai, China
| | - Mozhi Wang
- Department of Breast Surgery, the First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yuhai Chen
- Department of Breast Surgery, the First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Hongyi Cao
- Department of Pathology, the First Hospital of China Medical University and College of Basic Medical Sciences, Shenyang, Liaoning, China
| | - Qiang Zhang
- Department of Breast Surgery, Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute, Shenyang, Liaoning, China
| | - Keda Yu
- Fudan University Shanghai Cancer Center, Fudan University, Shanghai, China
| | - Yizhou Jiang
- Fudan University Shanghai Cancer Center, Fudan University, Shanghai, China
| | - Zhiming Shao
- Fudan University Shanghai Cancer Center, Fudan University, Shanghai, China
| | - Xiang Zhou
- Fudan University Shanghai Cancer Center, Fudan University, Shanghai, China.
- Shanghai Key Laboratory of Medical Epigenetics, International Co-laboratory of Medical Epigenetics and Metabolism (Ministry of Science and Technology), Institutes of Biomedical Sciences, Fudan University, Shanghai, China.
| | - Yingying Xu
- Department of Breast Surgery, the First Hospital of China Medical University, Shenyang, Liaoning, China.
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14
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Geelhoed JS, Thorup CA, Bjerg JJ, Schreiber L, Nielsen LP, Schramm A, Meysman FJR, Marshall IPG. Indications for a genetic basis for big bacteria and description of the giant cable bacterium Candidatus Electrothrix gigas sp. nov. Microbiol Spectr 2023; 11:e0053823. [PMID: 37732806 PMCID: PMC10580974 DOI: 10.1128/spectrum.00538-23] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 07/21/2023] [Indexed: 09/22/2023] Open
Abstract
Bacterial cells can vary greatly in size, from a few hundred nanometers to hundreds of micrometers in diameter. Filamentous cable bacteria also display substantial size differences, with filament diameters ranging from 0.4 to 8 µm. We analyzed the genomes of cable bacterium filaments from 11 coastal environments of which the resulting 23 new genomes represent 10 novel species-level clades of Candidatus Electrothrix and two clades that putatively represent novel genus-level diversity. Fluorescence in situ hybridization with a species-level probe showed that large-sized cable bacteria belong to a novel species with the proposed name Ca. Electrothrix gigas. Comparative genome analysis suggests genes that play a role in the construction or functioning of large cable bacteria cells: the genomes of Ca. Electrothrix gigas encode a novel actin-like protein as well as a species-specific gene cluster encoding four putative pilin proteins and a putative type II secretion platform protein, which are not present in other cable bacteria. The novel actin-like protein was also found in a number of other giant bacteria, suggesting there could be a genetic basis for large cell size. This actin-like protein (denoted big bacteria protein, Bbp) may have a function analogous to other actin proteins in cell structure or intracellular transport. We contend that Bbp may help overcome the challenges of diffusion limitation and/or morphological complexity presented by the large cells of Ca. Electrothrix gigas and other giant bacteria. IMPORTANCE In this study, we substantially expand the known diversity of marine cable bacteria and describe cable bacteria with a large diameter as a novel species with the proposed name Candidatus Electrothrix gigas. In the genomes of this species, we identified a gene that encodes a novel actin-like protein [denoted big bacteria protein (Bbp)]. The bbp gene was also found in a number of other giant bacteria, predominantly affiliated to Desulfobacterota and Gammaproteobacteria, indicating that there may be a genetic basis for large cell size. Thus far, mostly structural adaptations of giant bacteria, vacuoles, and other inclusions or organelles have been observed, which are employed to overcome nutrient diffusion limitation in their environment. In analogy to other actin proteins, Bbp could fulfill a structural role in the cell or potentially facilitate intracellular transport.
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Affiliation(s)
- Jeanine S. Geelhoed
- Department of Biology, Research Group Geobiology, University of Antwerp, Wilrijk, Belgium
| | - Casper A. Thorup
- Department of Biology, Center for Electromicrobiology, Aarhus University, Aarhus, Denmark
| | - Jesper J. Bjerg
- Department of Biology, Research Group Geobiology, University of Antwerp, Wilrijk, Belgium
- Department of Biology, Center for Electromicrobiology, Aarhus University, Aarhus, Denmark
| | - Lars Schreiber
- Department of Biology, Center for Electromicrobiology, Aarhus University, Aarhus, Denmark
| | - Lars Peter Nielsen
- Department of Biology, Center for Electromicrobiology, Aarhus University, Aarhus, Denmark
| | - Andreas Schramm
- Department of Biology, Center for Electromicrobiology, Aarhus University, Aarhus, Denmark
| | - Filip J. R. Meysman
- Department of Biology, Research Group Geobiology, University of Antwerp, Wilrijk, Belgium
- Department of Biotechnology, Delft University of Technology, Delft, the Netherlands
| | - Ian P. G. Marshall
- Department of Biology, Center for Electromicrobiology, Aarhus University, Aarhus, Denmark
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15
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Sharma S, Ali ME. How do the mutations in PfK13 protein promote anti-malarial drug resistance? J Biomol Struct Dyn 2023; 41:7329-7338. [PMID: 36153000 DOI: 10.1080/07391102.2022.2120539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 08/27/2022] [Indexed: 10/14/2022]
Abstract
Plasmodium falciparum develops resistance to artemisinin upon exposure to the anti-malarial drug. Various mutations in the Plasmodium falciparum Kelch13 (PfK13) protein such as Y493H, R539T, I543T and C580Y have been associated with anti-malarial drug resistance. These mutations impede the regular ubiquitination process that eventually invokes drug resistance. However, the relationship between the mutation and the mechanism of drug resistance has not yet been fully elucidated. The comparative protein dynamics are studied by performing the classical molecular dynamics (MD) simulations and subsequent analysis of the trajectories adopting root-mean-square fluctuations, the secondary-structure predictions and the dynamical cross-correlation matrix analysis tools. Here, we observed that the mutations in the Kelch-domain do not have any structural impact on the mutated site; however, it significantly alters the overall dynamics of the protein. The loop-region of the BTB-domain especially for Y493H and C580Y mutants is found to have the enhanced dynamical fluctuations. The enhanced fluctuations in the BTB-domain could affect the protein-protein (PfK13-Cullin) binding interactions in the ubiquitination process and eventually lead to anti-malarial drug resistance.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Shikha Sharma
- Institute of Nano Science and Technology, Sector-81, Mohali, Punjab, India
| | - Md Ehesan Ali
- Institute of Nano Science and Technology, Sector-81, Mohali, Punjab, India
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16
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Kint N, Viollier PH. Extracellular transfer of a conserved polymerization factor for multi-flagellin filament assembly in Caulobacter. Cell Rep 2023; 42:112890. [PMID: 37515768 DOI: 10.1016/j.celrep.2023.112890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 06/15/2023] [Accepted: 07/12/2023] [Indexed: 07/31/2023] Open
Abstract
Unidirectional growth of filamentous protein assemblies including the bacterial flagellum relies on dedicated polymerization factors (PFs). The molecular determinants and structural transitions imposed by PFs on multi-subunit assembly are poorly understood. Here, we unveil FlaY from the polarized α-proteobacterium Caulobacter crescentus as a defining member of an alternative class of specialized flagellin PFs. Unlike the paradigmatic FliD capping protein, FlaY relies on a funnel-like β-propeller fold for flagellin polymerization. FlaY binds flagellin and is secreted by the flagellar secretion apparatus, yet it can also promote flagellin polymerization exogenously when donated from flagellin-deficient cells, serving as a transferable, extracellular public good. While the surge in FlaY abundance precedes bulk flagellin synthesis, FlaY-independent filament assembly is enhanced by mutation of a conserved region in multiple flagellin paralogs. We suggest that FlaYs are (multi-)flagellin PFs that evolved convergently to FliDs yet appropriated the versatile β-propeller fold implicated in human diseases for chaperone-assisted filament assembly.
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Affiliation(s)
- Nicolas Kint
- Department of Microbiology & Molecular Medicine and Geneva Center for Inflammation Research (GCIR), Faculty of Medicine, University of Geneva, Rue Michel Servet 1, 1211 Genève, Switzerland.
| | - Patrick H Viollier
- Department of Microbiology & Molecular Medicine and Geneva Center for Inflammation Research (GCIR), Faculty of Medicine, University of Geneva, Rue Michel Servet 1, 1211 Genève, Switzerland.
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17
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Zhai T, Teng J, Fan X, Yu S, Wang C, Guo X, Yang W, Zhang S. Nitrile-Specific Protein NSP2 and Its Interacting Protein MPK3 Synergistically Regulate Plant Disease Resistance in Arabidopsis. PLANTS (BASEL, SWITZERLAND) 2023; 12:2857. [PMID: 37571011 PMCID: PMC10421354 DOI: 10.3390/plants12152857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 07/21/2023] [Accepted: 07/25/2023] [Indexed: 08/13/2023]
Abstract
Glucosinolates and their degradation products have a wide range of actions and are important components of plant defense. NSP2 (nitrile-specific protein 2) is a key regulator in the breakdown process of glucosinolates. However, the precise function of NSP2 in plant disease resistance beyond its role in glucosinolate degradation is still unclear. In this study, we discovered that NSP2 which was induced by Pst DC3000, influenced PR genes expression and reactive oxygen burst. Additionally, omics analysis revealed that NSP2 was engaged in plant-pathogen interaction and several hormone signal transduction pathways. Furthermore, immunoprecipitation-tandem mass spectrometry analysis (IP-MS), bimolecular fluorescence complementation (BiFC), and co-immunoprecipitation demonstrated that NSP2 interacts with MPK3. Genetic analysis shows that NSP2 may be a function downstream of MPK3. Upon pathogen inoculation, NSP2 protein levels increase while MPK3 protein levels decrease. Moreover, the level of phosphorylated NSP2 decreases. Taken together, this study sheds light on a new mode of synergistic action between NSP2 and MPK3 in the disease resistance process.
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Affiliation(s)
- Tingting Zhai
- National Key Laboratory of Wheat Improvement, College of Life Science, Shandong Agricultural University, Tai’an 271018, China; (T.Z.); (X.F.); (S.Y.); (C.W.)
| | - Jun Teng
- College of Animal Science and Technology, Shandong Agricultural University, Tai’an 271018, China;
| | - Xintong Fan
- National Key Laboratory of Wheat Improvement, College of Life Science, Shandong Agricultural University, Tai’an 271018, China; (T.Z.); (X.F.); (S.Y.); (C.W.)
| | - Shaowei Yu
- National Key Laboratory of Wheat Improvement, College of Life Science, Shandong Agricultural University, Tai’an 271018, China; (T.Z.); (X.F.); (S.Y.); (C.W.)
| | - Chen Wang
- National Key Laboratory of Wheat Improvement, College of Life Science, Shandong Agricultural University, Tai’an 271018, China; (T.Z.); (X.F.); (S.Y.); (C.W.)
| | - Xingqi Guo
- School of Chemical and Biological Engineering, Qilu Institute of Technology, Jinan 271018, China;
| | - Wei Yang
- National Key Laboratory of Wheat Improvement, College of Life Science, Shandong Agricultural University, Tai’an 271018, China; (T.Z.); (X.F.); (S.Y.); (C.W.)
| | - Shuxin Zhang
- National Key Laboratory of Wheat Improvement, College of Life Science, Shandong Agricultural University, Tai’an 271018, China; (T.Z.); (X.F.); (S.Y.); (C.W.)
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18
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Adamson RJ, Payne NC, Bartual SG, Mazitschek R, Bullock AN. Structural and biochemical characterization establishes a detailed understanding of KEAP1-CUL3 complex assembly. Free Radic Biol Med 2023; 204:215-225. [PMID: 37156295 PMCID: PMC10564622 DOI: 10.1016/j.freeradbiomed.2023.04.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/22/2023] [Accepted: 04/28/2023] [Indexed: 05/10/2023]
Abstract
KEAP1 promotes the ubiquitin-dependent degradation of NRF2 by assembling into a CUL3-dependent ubiquitin ligase complex. Oxidative and electrophilic stress inhibit KEAP1 allowing NRF2 to accumulate for the transactivation of stress response genes. To date there are no structures of the KEAP1-CUL3 interaction nor binding data to show the contributions of different domains to their binding affinity. We determined a crystal structure of the BTB and 3-box domains of human KEAP1 in complex with the CUL3 N-terminal domain that showed a heterotetrameric assembly with 2:2 stoichiometry. To support the structural data, we developed a versatile TR-FRET-based assay system to profile the binding of BTB-domain-containing proteins to CUL3 and determine the contribution of distinct protein features, revealing the importance of the CUL3 N-terminal extension for high affinity binding. We further provide direct evidence that the investigational drug CDDO does not disrupt the KEAP1-CUL3 interaction, even at high concentrations, but reduces the affinity of KEAP1-CUL3 binding. The TR-FRET-based assay system offers a generalizable platform for profiling this protein class and may form a suitable screening platform for ligands that disrupt these interactions by targeting the BTB or 3-box domains to block E3 ligase function.
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Affiliation(s)
- Roslin J Adamson
- Centre for Medicines Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, OX3 7FZ, UK
| | - N Connor Payne
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA, 02114, USA; Department of Chemistry & Chemical Biology, Harvard University, Cambridge, MA, 02138, USA
| | - Sergio G Bartual
- Centre for Medicines Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, OX3 7FZ, UK
| | - Ralph Mazitschek
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA, 02114, USA; Harvard T.H. Chan School of Public Health, Boston, MA, 02115, USA; Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA.
| | - Alex N Bullock
- Centre for Medicines Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, OX3 7FZ, UK.
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19
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Zhang J, Wang L, Ren A, Sheng Y, Chang X, Li X, Guan M, Shang N, Zhao P, Sun S. Prediction of Effector Proteins from Trichoderma longibrachiatum Through Transcriptome Sequencing. Curr Microbiol 2023; 80:259. [PMID: 37358649 DOI: 10.1007/s00284-023-03296-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 04/02/2023] [Indexed: 06/27/2023]
Abstract
Trichoderma longibrachiatum SMF2 is an important biocontrol strain isolated by our group that can promote plant growth and induce plant disease resistance. To further study its biocontrol mechanism, the effector proteins secreted by T. longibrachiatum SMF2 were analyzed through bioinformatics and transcriptome sequencing. Overall, 478 secretory proteins produced by T. longibrachiatum were identified, of which 272 were upregulated after treatment with plants. Functional annotation showed that 36 secretory proteins were homologous with different groups of effectors from pathogenic microorganisms. Moreover, the quantitative PCR results of six putative effector proteins were consistent with those of transcriptome sequencing. Taken together, these findings indicate that the secretory proteins secreted by T. longibrachiatum SMF2 may act as effectors to facilitate its own growth and colonization or to induce plant immunity response.
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Affiliation(s)
| | - Lijun Wang
- Liaocheng University, Liaocheng, 252000, China
| | - Aizhi Ren
- Liaocheng University, Liaocheng, 252000, China
| | | | - Xue Chang
- Liaocheng University, Liaocheng, 252000, China
- Liaocheng Land and Resources Bureau, Liaocheng, 252000, China
| | - Xiaolong Li
- Liaocheng University, Liaocheng, 252000, China
| | | | - Na Shang
- Liaocheng University, Liaocheng, 252000, China
- Liaocheng Academy of Agricultural Sciences, Liaocheng, 252000, China
| | - Peibao Zhao
- Liaocheng University, Liaocheng, 252000, China.
| | - Shulei Sun
- Liaocheng University, Liaocheng, 252000, China.
- University of California San Diego, San Diego, CA, 92121, USA.
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20
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Zhang Z, Shang Y, Li S, Chen Z, Xia J, Tian Y, Jia Y, Ma A. Molecular Docking Revealed the Potential Anti-Oxidative Stress Mechanism of the Walnut Polypeptide on HT22 Cells. Foods 2023; 12:foods12071554. [PMID: 37048374 PMCID: PMC10093838 DOI: 10.3390/foods12071554] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 03/24/2023] [Accepted: 03/29/2023] [Indexed: 04/14/2023] Open
Abstract
The preparation of novel antioxidant peptides from food raw materials is one of the research focuses, but there are fewer studies on the preparation of antioxidant peptides from walnut meal, a by-product of processing walnuts. This study analyzed the antioxidant properties and protective effects of walnut protein hydrolyzed by alkaline protease and trypsin on the oxidative stress of HT22 cells. The peptides were identified by UPLC-MS/MS, and the anti-oxidative peptides were screened based on virtual computer tools. The potential anti-oxidative stress mechanism of the walnut polypeptide on HT22 cells was explored by molecular docking. The results revealed that walnut protein hydrolysates (WPH) with molecular weights of less than 1 kDa had good antioxidant properties and inhibited oxidative damage of HT22 cells by regulating the levels of reactive oxygen species (ROS) and antioxidant enzyme catalase (CAT), superoxide dismutase (SOD), and glutathione peroxidase (GSH-Px). Six of the ninety identified new peptides showed good solubility, non-toxicity, and bioactivity. The molecular docking results showed that the six peptides could dock with Keap1 successfully, and EYWNR and FQLPR (single-letter forms of peptide writing) could interact with the binding site of Nrf2 in the Keap1-Kelch structural domain through hydrogen bonds with strong binding forces. The results of this study provided important information on the antioxidant molecular mechanism of the walnut polypeptide and provided a basis for further development of walnut antioxidant polypeptide products.
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Affiliation(s)
- Zijie Zhang
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, China
| | - Yuting Shang
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, China
| | - Siting Li
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, China
| | - Zhou Chen
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, China
| | - Junxia Xia
- Hebei Yangyuan ZhiHui Beverage Co., Ltd., Hengshui 053000, China
| | - Yiling Tian
- College of Food Science and Technology, Hebei Agricultural University, Baoding 071000, China
| | - Yingmin Jia
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, China
| | - Aijin Ma
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, China
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21
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Choi SH, Cho SY, Park SY, Hur MW. Post-translational regulation of proto-oncogene ZBTB7A expression by p53 status in cancer cells: HSP90-dependent stabilization vs. p53-KLHL20-ubiquitin proteasomal degradation. BIOCHIMICA ET BIOPHYSICA ACTA (BBA) - GENE REGULATORY MECHANISMS 2023; 1866:194931. [PMID: 37011832 DOI: 10.1016/j.bbagrm.2023.194931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 03/18/2023] [Accepted: 03/21/2023] [Indexed: 04/03/2023]
Abstract
ZBTB7A overexpressed in many human cancers is a major oncogenic driver. ZBTB7A promotes tumorigenesis by regulating transcription of the genes involved in cell survival and proliferation, apoptosis, invasion, and migration/metastasis. One unresolved issue is the mechanism underlying the aberrant overexpression of ZBTB7A in cancer cells. Interestingly, inhibition of HSP90 decreased ZBTB7A expression in a variety of human cancer cells. ZBTB7A interacts with and is stabilized by HSP90. Inhibition of HSP90 by 17-AAG resulted in p53-dependent proteolysis of ZBTB7A via increased p53 expression and upregulation of the CUL3-dependent E3 ubiquitin ligase, KLHL20. Down-regulation of ZBTB7A resulted in the derepression of a major negative regulator of cell cycle progression, p21/CDKN1A. We discovered a new function of p53 regulating ZBTB7A expression through KLHL20-E3 ligase and proteasomal protein degradation system.
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22
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Han D, Tan J, Yue Z, Tao P, Lei J, Zang Y, Hu Q, Wang H, Zhang S, Li B, Zhao Y. Genome-Wide Identification and Expression Analysis of ESPs and NSPs Involved in Glucosinolate Hydrolysis and Insect Attack Defense in Chinese Cabbage ( Brassica rapa subsp. pekinensis). PLANTS (BASEL, SWITZERLAND) 2023; 12:1123. [PMID: 36903983 PMCID: PMC10005253 DOI: 10.3390/plants12051123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/20/2023] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
Glucosinolates are secondary plant metabolites that are part of the plant's defense system against pathogens and pests and are activated via enzymatic degradation by thioglucoside glucohydrolases (myrosinases). Epithiospecifier proteins (ESPs) and nitrile-specifier proteins (NSPs) divert the myrosinase-catalyzed hydrolysis of a given glucosinolate to form epithionitrile and nitrile rather than isothiocyanate. However, the associated gene families have not been explored in Chinese cabbage. We identified three ESP and fifteen NSP genes randomly distributed on six chromosomes in Chinese cabbage. Based on a phylogenetic tree, the ESP and NSP gene family members were divided into four clades and had similar gene structure and motif composition of Brassica rapa epithiospecifier proteins (BrESPs) and B. rapa nitrile-specifier proteins (BrNSPs) in the same clade. We identified seven tandem duplicated events and eight pairs of segmentally duplicated genes. Synteny analysis showed that Chinese cabbage and Arabidopsis thaliana are closely related. We detected the proportion of various glucosinolate hydrolysates in Chinese cabbage and verified the function of BrESPs and BrNSPs in glucosinolate hydrolysis. Furthermore, we used quantitative RT-PCR to analyze the expression of BrESPs and BrNSPs and demonstrated that these genes responded to insect attack. Our findings provide novel insights into BrESPs and BrNSPs that can help further promote the regulation of glucosinolate hydrolysates by ESP and NSP to resist insect attack in Chinese cabbage.
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Affiliation(s)
- Danni Han
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
- State Key Laboratory of Crop Biology, College of Life Science, Shandong Agricultural University, Taian 271018, China
| | - Jingru Tan
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
- Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Agricultural and Food Science, Zhejiang A&F University, Hangzhou 311300, China
| | - Zhichen Yue
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Peng Tao
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Juanli Lei
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Yunxiang Zang
- Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Agricultural and Food Science, Zhejiang A&F University, Hangzhou 311300, China
| | - Qizan Hu
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Huasen Wang
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, College of Horticulture, Qingdao Agricultural University, Qingdao 266109, China
| | - Shizhong Zhang
- State Key Laboratory of Crop Biology, College of Life Science, Shandong Agricultural University, Taian 271018, China
| | - Biyuan Li
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Yanting Zhao
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
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23
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Zhu C, Liang S, Zan G, Wang X, Gao C, Yan H, Wang X, Zhou J. Selenomethionine Alleviates DON-Induced Oxidative Stress via Modulating Keap1/Nrf2 Signaling in the Small Intestinal Epithelium. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:895-904. [PMID: 36535023 DOI: 10.1021/acs.jafc.2c07885] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The small intestinal epithelium is regulated in response to various beneficial or harmful environmental information. Deoxynivalenol (DON), a mycotoxin widely distributed in cereal-based feeds, induces oxidative stress damage in the intestine due to the mitochondrial stress. As a functional nutrient, selenomethionine (Se-Met) is involved in synthesizing several antioxidant enzymes, yet whether it can replenish the intestinal epithelium upon DON exposure remains unknown. Therefore, the in vivo model C57BL/6 mice and the in vitro model MODE-K cells were treated with l-Se-Met and DON alone or in combination to confirm the status of intestinal stem cell (ISC)-driven epithelial regeneration. The results showed that 0.1 mg/kg body weight (BW) Se-Met reinstated the growth performance and integrity of jejunal structure and barrier function in DON-challenged mice. Moreover, Lgr5+ ISCs and PCNA+ mitotic cells in crypts were prominently increased by Se-Met in the presence of DON, concomitant with a significant increase in absorptive cells, goblet cells, and Paneth cells. Simultaneously, crypt-derived jejunal organoids from the Se-Met + DON group exhibited more significant growth advantages ex vivo. Furthermore, Se-Met-stimulated Keap1/Nrf2-dependent antioxidant system (T-AOC and GSH-Px) to inhibit the accumulation of ROS and MDA in the jejunum and serum. Moreover, Se-Met failed to rescue the DON-triggered impairment of cell antioxidant function after Nrf2 perturbation using its specific inhibitor ML385 in MODE-K cells. In conclusion, Se-Met protects ISC-driven intestinal epithelial integrity against DON-induced oxidative stress damage by modulating Keap1/Nrf2 signaling.
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Affiliation(s)
- Chao Zhu
- College of Animal Science, South China Agricultural University/Guangdong Laboratory for Lingnan Modern Agriculture/Guangdong Provincial Key Laboratory of Animal Nutrition Control/National Engineering Research Center for Breeding Swine Industry, Guangzhou 510642, China
| | - Shaojie Liang
- College of Animal Science, South China Agricultural University/Guangdong Laboratory for Lingnan Modern Agriculture/Guangdong Provincial Key Laboratory of Animal Nutrition Control/National Engineering Research Center for Breeding Swine Industry, Guangzhou 510642, China
| | - Gengxiu Zan
- College of Animal Science, South China Agricultural University/Guangdong Laboratory for Lingnan Modern Agriculture/Guangdong Provincial Key Laboratory of Animal Nutrition Control/National Engineering Research Center for Breeding Swine Industry, Guangzhou 510642, China
| | - Xiaofan Wang
- College of Animal Science, South China Agricultural University/Guangdong Laboratory for Lingnan Modern Agriculture/Guangdong Provincial Key Laboratory of Animal Nutrition Control/National Engineering Research Center for Breeding Swine Industry, Guangzhou 510642, China
| | - Chunqi Gao
- College of Animal Science, South China Agricultural University/Guangdong Laboratory for Lingnan Modern Agriculture/Guangdong Provincial Key Laboratory of Animal Nutrition Control/National Engineering Research Center for Breeding Swine Industry, Guangzhou 510642, China
| | - Huichao Yan
- College of Animal Science, South China Agricultural University/Guangdong Laboratory for Lingnan Modern Agriculture/Guangdong Provincial Key Laboratory of Animal Nutrition Control/National Engineering Research Center for Breeding Swine Industry, Guangzhou 510642, China
| | - Xiuqi Wang
- College of Animal Science, South China Agricultural University/Guangdong Laboratory for Lingnan Modern Agriculture/Guangdong Provincial Key Laboratory of Animal Nutrition Control/National Engineering Research Center for Breeding Swine Industry, Guangzhou 510642, China
| | - Jiayi Zhou
- College of Animal Science, South China Agricultural University/Guangdong Laboratory for Lingnan Modern Agriculture/Guangdong Provincial Key Laboratory of Animal Nutrition Control/National Engineering Research Center for Breeding Swine Industry, Guangzhou 510642, China
- HenryFok School of Biology and Agriculture, Shaoguan University, Shaoguan 512005, China
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Ling J, Li L, Lin L, Xie H, Zheng Y, Wan X. Genome-wide identification of acyl-CoA binding proteins and possible functional prediction in legumes. Front Genet 2023; 13:1057160. [PMID: 36704331 PMCID: PMC9871394 DOI: 10.3389/fgene.2022.1057160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 12/21/2022] [Indexed: 01/12/2023] Open
Abstract
Acyl-CoA-binding proteins (ACBPs), members of a vital housekeeping protein family, are present in various animal and plant species. They are divided into four classes: small ACBPs (class I), ankyrin-repeat ACBPs (class II), large ACBPs (class III), and kelch-ACBPs (class IV). Plant ACBPs play a pivotal role in intracellular transport, protection, and pool formation of acyl-CoA esters, promoting plant development and stress response. Even though legume crops are important for vegetable oils, proteins, vegetables and green manure, legume ACBPs are not well investigated. To comprehensively explore the functions of ACBPs in nine legumes (Lotus japonicus, Medicago truncatula, Glycine max, Vigna angularis, Vigna radiata, Phaseolus vulgaris, Arachis hypogaea, Arachis duranensis, and Arachis ipaensis), we conducted genome-wide identification of the ACBP gene family. Our evolutionary analyses included phylogenetics, gene structure, the conserved motif, chromosomal distribution and homology, subcellular localization, cis-elements, and interacting proteins. The results revealed that ACBP Orthologs of nine legumes had a high identity in gene structure and conserved motif. However, subcellular localization, cis-acting elements, and interaction protein analyses revealed potentially different functions from previously reported. The predicted results were also partially verified in Arachis hypogaea. We believe that our findings will help researchers understand the roles of ACBPs in legumes and encourage them to conduct additional research.
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25
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Corzo Leon DE, Scheynius A, MacCallum DM, Munro CA. Malassezia sympodialis Mala s 1 allergen is a potential KELCH protein that cross reacts with human skin. FEMS Yeast Res 2023; 23:foad028. [PMID: 37188635 PMCID: PMC10281499 DOI: 10.1093/femsyr/foad028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 04/28/2023] [Accepted: 05/12/2023] [Indexed: 05/17/2023] Open
Abstract
Malassezia are the dominant commensal yeast species of the human skin microbiota and are associated with inflammatory skin diseases, such as atopic eczema (AE). The Mala s 1 allergen of Malassezia sympodialis is a β-propeller protein, inducing both IgE and T-cell reactivity in AE patients. We demonstrate by immuno-electron microscopy that Mala s 1 is mainly located in the M. sympodialis yeast cell wall. An anti-Mala s 1 antibody did not inhibit M. sympodialis growth suggesting Mala s 1 may not be an antifungal target. In silico analysis of the predicted Mala s 1 protein sequence identified a motif indicative of a KELCH protein, a subgroup of β-propeller proteins. To test the hypothesis that antibodies against Mala s 1 cross-react with human skin (KELCH) proteins we examined the binding of the anti-Mala s 1 antibody to human skin explants and visualized binding in the epidermal skin layer. Putative human targets recognized by the anti-Mala s 1 antibody were identified by immunoblotting and proteomics. We propose that Mala s 1 is a KELCH-like β-propeller protein with similarity to human skin proteins. Mala s 1 recognition may trigger cross-reactive responses that contribute to skin diseases associated with M. sympodialis.
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Affiliation(s)
- Dora E Corzo Leon
- School of Medicine, Medical Sciences & Nutrition University of Aberdeen, Foresterhill, Aberdeen, AB25 2ZD, UK
| | - Annika Scheynius
- Department of Clinical Science and Education, Karolinska Institutet, and Sachs' Children and Youth Hospital, Södersjukhuset, SE-118 83 Stockholm, Sweden
| | - Donna M MacCallum
- School of Medicine, Medical Sciences & Nutrition University of Aberdeen, Foresterhill, Aberdeen, AB25 2ZD, UK
| | - Carol A Munro
- School of Medicine, Medical Sciences & Nutrition University of Aberdeen, Foresterhill, Aberdeen, AB25 2ZD, UK
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26
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Uchida S, Mori T, Susa K, Sohara E. NCC regulation by WNK signal cascade. Front Physiol 2023; 13:1081261. [PMID: 36685207 PMCID: PMC9845728 DOI: 10.3389/fphys.2022.1081261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 12/14/2022] [Indexed: 01/06/2023] Open
Abstract
With-no-lysine (K) (WNK) kinases have been identified as the causal genes for pseudohypoaldosteronism type II (PHAII), a rare hereditary hypertension condition characterized by hyperkalemia, hyperchloremic metabolic acidosis, and thiazide-hypersensitivity. We thought that clarifying the link between WNK and NaCl cotransporter (NCC) would bring us new mechanism(s) of NCC regulation. For the first time, we were able to produce a knock-in mouse model of PHAII and anti-phosphorylated NCC antibodies against the putative NCC phosphorylation sites and discover that constitutive activation of NCC and increased phosphorylation of NCC are the primary pathogenesis of the disease in vivo. We have since demonstrated that this regulatory mechanism is mediated by the kinases oxidative stress-response protein 1 (OSR1) and STE20/SPS1-related proline/alanine-rich kinase (SPAK) (WNK-OSR1/SPAK-NCC signaling cascade) and that the signaling is not only important in the pathological condition of PHAII but also plays a crucial physiological role in the regulation of NCC.
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27
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Cho CH, Park SI, Huang TY, Lee Y, Ciniglia C, Yadavalli HC, Yang SW, Bhattacharya D, Yoon HS. Genome-wide signatures of adaptation to extreme environments in red algae. Nat Commun 2023; 14:10. [PMID: 36599855 DOI: 10.1038/s41467-022-35566-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Accepted: 12/09/2022] [Indexed: 01/06/2023] Open
Abstract
The high temperature, acidity, and heavy metal-rich environments associated with hot springs have a major impact on biological processes in resident cells. One group of photosynthetic eukaryotes, the Cyanidiophyceae (Rhodophyta), has successfully thrived in hot springs and associated sites worldwide for more than 1 billion years. Here, we analyze chromosome-level assemblies from three representative Cyanidiophyceae species to study environmental adaptation at the genomic level. We find that subtelomeric gene duplication of functional genes and loss of canonical eukaryotic traits played a major role in environmental adaptation, in addition to horizontal gene transfer events. Shared responses to environmental stress exist in Cyanidiales and Galdieriales, however, most of the adaptive genes (e.g., for arsenic detoxification) evolved independently in these lineages. Our results underline the power of local selection to shape eukaryotic genomes that may face vastly different stresses in adjacent, extreme microhabitats.
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Affiliation(s)
- Chung Hyun Cho
- Department of Biological Sciences, Sungkyunkwan University, Suwon, 16419, Korea
| | - Seung In Park
- Department of Biological Sciences, Sungkyunkwan University, Suwon, 16419, Korea
| | - Tzu-Yen Huang
- Department of Biological Sciences, Sungkyunkwan University, Suwon, 16419, Korea
| | - Yongsung Lee
- Department of Biological Sciences, Sungkyunkwan University, Suwon, 16419, Korea
| | - Claudia Ciniglia
- Department of Environmental, Biological and Pharmaceutical Science and Technologies, University of Campania Luigi Vanvitelli, Caserta, Italy
| | - Hari Chandana Yadavalli
- Department of Systems Biology, Institute of Life Science and Biotechnology, Yonsei University, Seoul, Korea
| | - Seong Wook Yang
- Department of Systems Biology, Institute of Life Science and Biotechnology, Yonsei University, Seoul, Korea
| | | | - Hwan Su Yoon
- Department of Biological Sciences, Sungkyunkwan University, Suwon, 16419, Korea.
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28
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Liu Y, Song J, Gu J, Xu S, Wang X, Liu Y. The Role of BTBD7 in Normal Development and Tumor Progression. Technol Cancer Res Treat 2023; 22:15330338231167732. [PMID: 37050886 PMCID: PMC10102955 DOI: 10.1177/15330338231167732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023] Open
Abstract
BTB/POZ domain-containing protein 7 (BTBD7) has a relative molecular weight of 126KD and contains two conserved BTB/POZ protein sequences. BTBD7 has been shown to play an essential role in normal human development, precancerous lesions, heat-stress response, and tumor progression. BTBD7 promotes branching morphogenesis during development and participates in the salivary gland, lung, and tooth formation. Furthermore, many studies have shown that aberrant expression of BTBD7 promotes heat stress response and the progression of precancerous lesions. BTBD7 has also been found to play an important role in cancer. High expression of BTBD7 affects tumor progression by regulating multiple pathways. Therefore, a complete understanding of BTBD7 is crucial for exploring human development and tumor progression. This paper reviews the research progress of BTBD7, which lays a foundation for the application of BTBD7 in regenerative medicine and as a biomarker for tumor prediction or potential therapeutic target.
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Affiliation(s)
- Yun Liu
- School of Stomatology, Weifang Medical University, Weifang, Shandong, China
| | - Jiwu Song
- Weifang People's Hospital, First Affiliated Hospital of Weifang Medical University, Weifang, Shandong, China
| | - Jianchang Gu
- School of Stomatology, Weifang Medical University, Weifang, Shandong, China
| | - Shuangshuang Xu
- School of Stomatology, Weifang Medical University, Weifang, Shandong, China
| | - Xiaolan Wang
- School of Stomatology, Weifang Medical University, Weifang, Shandong, China
| | - Yunxia Liu
- School of Stomatology, Weifang Medical University, Weifang, Shandong, China
- Affiliated Hospital of Weifang Medical University, Weifang, Shandong, China
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29
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Liu Z, Zhao M, Jiang X, Zhang Y, Zhang S, Xu Y, Ren H, Su H, Wang H, Qiu X. Upregulation of KLHL17 promotes the proliferation and migration of non-small cell lung cancer by activating the Ras/MAPK signaling pathway. J Transl Med 2022; 102:1389-1399. [PMID: 35978057 DOI: 10.1038/s41374-022-00806-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 04/23/2022] [Accepted: 05/06/2022] [Indexed: 11/08/2022] Open
Abstract
Analysis of the Gene Expression Profiling Interactive Analysis (GEPIA) database revealed that Kelch-like 17 (KLHL17) is overexpressed in non-small cell lung cancer (NSCLC) including adenocarcinoma (ADC) and squamous cell carcinoma (SCC). We therefore explored the role of KLHL17 in the development and progression of NSCLC. Immunohistochemistry and western blotting showed that KLHL17 expression was significantly higher in the tumor tissues from 173 patients with NSCLC, compared with the corresponding non-neoplastic tissue. In addition, upregulated KLHL17 expression was positively correlated with tumor size, lymph node metastasis and tumor node metastasis (TNM) stage, and affected the overall survival (OS) of patients with NSCLC. Consistent with clinical samples, in vitro studies demonstrated that KLHL17 expression was higher in various cell lines of NSCLC (A549, H1299, H460 and SK cells) as compared to normal human bronchial epithelial cells (HBE cells). Overexpression of KLHL17 in the cell lines of NSCLC with KLHL17-Flag plasmid promoted the proliferation and migration of tumor cells, which was associated with elevated activation of Rat sarcoma/Mitogen-activated protein kinases (Ras/MAPK) signaling and increased expression of cyclin D1, cyclin D-dependent kinases 4 (CDK4), matrix metalloproteinase 2 (MMP2) and Ras homolog gene family member A (RhoA). In contrast, knockdown of KLHL17 in the cell lines of NSCLC using KLHL17 small interfering RNA suppressed the proliferation and migration of tumor cells, in association with reduced activation of Ras/MAPK signaling and decreased expression of cyclin D1, CDK4, MMP2 and RhoA. Moreover, treatment of tumor cells with Ras inhibitor salirasib prevented KLHL17-induced Ras/MAPK activity as well as tumor proliferation and migration. These results suggest that upregulated KLHL17 in NSCLC promotes the proliferation and migration of tumor by activating Ras/MAPK signaling pathway. Therefore, KLHL17 may be a novel therapeutic target for the treatment of NSCLC.
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Affiliation(s)
- Zongang Liu
- Department of Thoracic Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Mengnan Zhao
- Department of Pain, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Xizi Jiang
- Department of Pathology, College of Basic Medical Sciences, China Medical University, Shenyang, China
| | - Yao Zhang
- Department of Pathology, College of Basic Medical Sciences, China Medical University, Shenyang, China
| | - Suning Zhang
- Department of Thoracic Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yitong Xu
- Department of Pathology, College of Basic Medical Sciences, China Medical University, Shenyang, China
- Department of Pathology, The First Hospital of China Medical University, Shenyang, China
| | - Hongjiu Ren
- Department of Pathology, College of Basic Medical Sciences, China Medical University, Shenyang, China
- Department of Pathology, The First Hospital of China Medical University, Shenyang, China
| | - Hongbo Su
- Department of Pathology, College of Basic Medical Sciences, China Medical University, Shenyang, China
- Department of Pathology, The First Hospital of China Medical University, Shenyang, China
| | - Huanxi Wang
- Department of Pathology, College of Basic Medical Sciences, China Medical University, Shenyang, China
| | - Xueshan Qiu
- Department of Pathology, College of Basic Medical Sciences, China Medical University, Shenyang, China.
- Department of Pathology, The First Hospital of China Medical University, Shenyang, China.
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30
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Identification of KFB Family in Moso Bamboo Reveals the Potential Function of PeKFB9 Involved in Stress Response and Lignin Polymerization. Int J Mol Sci 2022; 23:ijms232012568. [PMID: 36293422 PMCID: PMC9604269 DOI: 10.3390/ijms232012568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/15/2022] [Accepted: 10/17/2022] [Indexed: 02/08/2023] Open
Abstract
The Kelch repeat F-box (KFB) protein is an important E3 ubiquitin ligase that has been demonstrated to perform an important post-translational regulatory role in plants by mediating multiple biological processes. Despite their importance, KFBs have not yet been identified and characterized in bamboo. In this study, 19 PeKFBs were identified with F-box and Kelch domains; genes encoding these PeKFBs were unevenly distributed across 12 chromosomes of moso bamboo. Phylogenetic analysis indicated that the PeKFBs were divided into eight subclades based on similar gene structures and highly conserved motifs. A tissue-specific gene expression analysis showed that the PeKFBs were differentially expressed in various tissues of moso bamboo. All the promoters of the PeKFBs contained stress-related cis-elements, which was supported by the differentially expression of PeKFBs of moso bamboo under drought and cold stresses. Sixteen proteins were screened from the moso bamboo shoots' cDNA library using PeKFB9 as a bait through a yeast two-hybrid (Y2H) assay. Moreover, PeKFB9 physically interacted with PeSKP1-like-1 and PePRX72-1, which mediated the activity of peroxidase in proteolytic turnover. Taken together, these findings improved our understanding of PeKFBs, especially in response to stresses, and laid a foundation for revealing the molecular mechanism of PeKFB9 in regulating lignin polymerization by degrading peroxidase.
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31
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Descorps-Declère S, Richard GF. Megasatellite formation and evolution in vertebrate genes. Cell Rep 2022; 40:111347. [PMID: 36103826 DOI: 10.1016/j.celrep.2022.111347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 04/28/2022] [Accepted: 08/23/2022] [Indexed: 11/03/2022] Open
Abstract
Since formation of the first proto-eukaryotes, gene repertoire and genome complexity have significantly increased. Among genetic elements responsible for this increase are tandem repeats. Here we describe a genome-wide analysis of large tandem repeats, called megasatellites, in 58 vertebrate genomes. Two bursts occurred, one after the radiation between Agnatha and Gnathostomata fishes and the second one in therian mammals. Megasatellites are enriched in subtelomeric regions and frequently encoded in genes involved in transcription regulation, intracellular trafficking, and cell membrane metabolism, reminiscent of what is observed in fungus genomes. The presence of many introns within young megasatellites suggests that an exon-intron DNA segment is first duplicated and amplified before accumulation of mutations in intronic parts partially erases the megasatellite in such a way that it becomes detectable only in exons. Our results suggest that megasatellite formation and evolution is a dynamic and still ongoing process in vertebrate genomes.
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Affiliation(s)
- Stéphane Descorps-Declère
- Institut Pasteur, Université Paris Cité, Bioinformatics and Biostatistics Hub, 25 rue du Dr Roux, 75015 Paris, France.
| | - Guy-Franck Richard
- Institut Pasteur, Université Paris Cité, CNRS UMR3525, Natural & Synthetic Genome Instabilities, 25 rue du Dr Roux, 75015 Paris, France.
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32
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The Role of Nrf2 in Pulmonary Fibrosis: Molecular Mechanisms and Treatment Approaches. Antioxidants (Basel) 2022; 11:antiox11091685. [PMID: 36139759 PMCID: PMC9495339 DOI: 10.3390/antiox11091685] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 08/21/2022] [Accepted: 08/26/2022] [Indexed: 11/21/2022] Open
Abstract
Pulmonary fibrosis is a chronic, progressive, incurable interstitial lung disease with high mortality after diagnosis and remains a global public health problem. Despite advances and breakthroughs in understanding the pathogenesis of pulmonary fibrosis, there are still no effective methods for the prevention and treatment of pulmonary fibrosis. The existing treatment options are imperfect, expensive, and have considerable limitations in effectiveness and safety. Hence, there is an urgent need to find novel therapeutic targets. The nuclear factor erythroid 2-related factor 2 (Nrf2) is a central regulator of cellular antioxidative responses, inflammation, and restoration of redox balance. Accumulating reports reveal that Nrf2 activators exhibit potent antifibrosis effects and significantly attenuate pulmonary fibrosis in vivo and in vitro. This review summarizes the current Nrf2-related knowledge about the regulatory mechanism and potential therapies in the process of pulmonary fibrosis. Nrf2 orchestrates the activation of multiple protective genes that target inflammation, oxidative stress, fibroblast–myofibroblast differentiation (FMD), and epithelial–mesenchymal transition (EMT), and the mechanisms involve Nrf2 and its downstream antioxidant, Nrf2/HO−1/NQO1, Nrf2/NOX4, and Nrf2/GSH signaling pathway. We hope to indicate potential for Nrf2 system as a therapeutic target for pulmonary fibrosis.
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Role of an FNIP Repeat Domain-Containing Protein Encoded by Megavirus Baoshan during Viral Infection. J Virol 2022; 96:e0081322. [PMID: 35762756 PMCID: PMC9327691 DOI: 10.1128/jvi.00813-22] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
FNIP repeat domain-containing protein (FNIP protein) is a little-studied atypical leucine-rich repeat domain-containing protein found in social amoebae and mimiviruses. Here, a recently reported mimivirus of lineage C, Megavirus baoshan, was analyzed for FNIP protein genes. A total of 82 FNIP protein genes were identified, each containing up to 26 copies of the FNIP repeat, and mostly having an F-box domain at the N terminus. Both nucleotide and amino acid sequences of FNIP repeat were highly conserved. Most of the FNIP protein genes clustered together tandemly in groups of two to 14 genes. Nearly all FNIP protein genes shared similar expression patterns and were expressed 4 to 9 h postinfection. A typical viral FNIP protein, Mb0983, was selected for functional analysis. Protein interactome analysis identified two small GTPases, Rap1B and Rab7A, that interacted with Mb0983 in cytoplasm. The overexpression of Mb0983 in Acanthamoeba castellanii accelerated the degradation of Rap1B and Rab7A during viral infection. Mb0983 also interacted with host SKP1 and cullin-1, which were conserved components of the SKP1-cullin-1-F-box protein (SCF)-type ubiquitin E3 ligase complex. Deletion of the F-box domain of Mb0983 not only abolished its interaction with SKP1 and cullin-1 but also returned the speed of Rap1B and Rab7A degradation to normal in infected A. castellanii. These results suggested that Mb0983 is a part of the SCF-type ubiquitin E3 ligase complex and plays a role in the degradation of Rap1B and Rab7A. They also implied that other viral F-box-containing FNIP proteins might have similar effects on various host proteins. IMPORTANCE Megavirus baoshan encodes 82 FNIP proteins, more than any other reported mimiviruses. Their genetic and transcriptional features suggest that they are important for virus infection and adaption. Since most mimiviral FNIP proteins have the F-box domain, they were predicted to be involved in protein ubiquitylation. FNIP protein Mb0983 interacted with host SKP1 and cullin-1 through the F-box domain, supporting the idea that it is a part of the SCF-type ubiquitin E3 ligase complex. The substrates of Mb0983 for degradation were identified as the host small GTPases Rap1B and Rab7A. Combining the facts of the presence of a large number of FNIP genes in megavirus genomes, the extremely high expression level of the viral ubiquitin gene, and the reported observation that 35% of megavirus-infected amoeba cells died without productive infection, it is likely that megavirus actively explores the host ubiquitin-proteasome pathway in infection and that viral FNIP proteins play roles in the process.
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Zhai F, Li J, Ye M, Jin X. The functions and effects of CUL3-E3 ligases mediated non-degradative ubiquitination. Gene X 2022; 832:146562. [PMID: 35580799 DOI: 10.1016/j.gene.2022.146562] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Revised: 03/30/2022] [Accepted: 05/06/2022] [Indexed: 02/09/2023] Open
Abstract
Ubiquitination of substrates usually have two fates: one is degraded by 26S proteasome, and the other is non-degradative ubiquitination modification which is associated with cell cycle regulation, chromosome inactivation, protein transportation, tumorigenesis, achondroplasia, and neurological diseases. Cullin3 (CUL3), a scaffold protein, binding with the Bric-a-Brac-Tramtrack-Broad-complex (BTB) domain of substrates recognition adaptor and RING-finger protein 1 (RBX1) form ubiquitin ligases (E3). Based on the current researches, this review has summarized the functions and effects of CUL3-E3 ligases mediated non-degradative ubiquitination.
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Affiliation(s)
- Fengguang Zhai
- The Affiliated Hospital of Medical School, Ningbo University, Ningbo 315020, China; Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathphysiology, Medical School of Ningbo University, Ningbo 315211, China
| | - Jingyun Li
- The Affiliated Hospital of Medical School, Ningbo University, Ningbo 315020, China; Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathphysiology, Medical School of Ningbo University, Ningbo 315211, China
| | - Meng Ye
- The Affiliated Hospital of Medical School, Ningbo University, Ningbo 315020, China; Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathphysiology, Medical School of Ningbo University, Ningbo 315211, China.
| | - Xiaofeng Jin
- The Affiliated Hospital of Medical School, Ningbo University, Ningbo 315020, China; Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathphysiology, Medical School of Ningbo University, Ningbo 315211, China.
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Hamdan MF, Lung SC, Guo ZH, Chye ML. Roles of acyl-CoA-binding proteins in plant reproduction. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:2918-2936. [PMID: 35560189 DOI: 10.1093/jxb/erab499] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 11/11/2021] [Indexed: 06/15/2023]
Abstract
Acyl-CoA-binding proteins (ACBPs) constitute a well-conserved family of proteins in eukaryotes that are important in stress responses and development. Past studies have shown that ACBPs are involved in maintaining, transporting and protecting acyl-CoA esters during lipid biosynthesis in plants, mammals, and yeast. ACBPs show differential expression and various binding affinities for acyl-CoA esters. Hence, ACBPs can play a crucial part in maintaining lipid homeostasis. This review summarizes the functions of ACBPs during the stages of reproduction in plants and other organisms. A comprehensive understanding on the roles of ACBPs during plant reproduction may lead to opportunities in crop improvement in agriculture.
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Affiliation(s)
- Mohd Fadhli Hamdan
- School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Shiu-Cheung Lung
- School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Ze-Hua Guo
- School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Mee-Len Chye
- School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong, China
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Tang R, Dong H, He L, Li P, Shi Y, Yang Q, Jia X, Li XQ. Genome-wide identification, evolutionary and functional analyses of KFB family members in potato. BMC PLANT BIOLOGY 2022; 22:226. [PMID: 35501691 PMCID: PMC9063267 DOI: 10.1186/s12870-022-03611-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 04/18/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Kelch repeat F-box (KFB) proteins play vital roles in the regulation of multitudinous biochemical and physiological processes in plants, including growth and development, stress response and secondary metabolism. Multiple KFBs have been characterized in various plant species, but the family members and functions have not been systematically identified and analyzed in potato. RESULTS Genome and transcriptome analyses of StKFB gene family were conducted to dissect the structure, evolution and function of the StKFBs in Solanum tuberosum L. Totally, 44 StKFB members were identified and were classified into 5 groups. The chromosomal localization analysis showed that the 44 StKFB genes were located on 12 chromosomes of potato. Among these genes, two pairs of genes (StKFB15/16 and StKFB40/41) were predicted to be tandemly duplicated genes, and one pair of genes (StKFB15/29) was segmentally duplicated genes. The syntenic analysis showed that the KFBs in potato were closely related to the KFBs in tomato and pepper. Expression profiles of the StKFBs in 13 different tissues and in potato plants with different treatments uncovered distinct spatial expression patterns of these genes and their potential roles in response to various stresses, respectively. Multiple StKFB genes were differentially expressed in yellow- (cultivar 'Jin-16'), red- (cultivar 'Red rose-2') and purple-fleshed (cultivar 'Xisen-8') potato tubers, suggesting that they may play important roles in the regulation of anthocyanin biosynthesis in potato. CONCLUSIONS This study reports the structure, evolution and expression characteristics of the KFB family in potato. These findings pave the way for further investigation of functional mechanisms of StKFBs, and also provide candidate genes for potato genetic improvement.
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Affiliation(s)
- Ruimin Tang
- College of life sciences, Shanxi Agricultural University, Taigu, 030801 Shanxi China
| | - Haitao Dong
- College of life sciences, Shanxi Agricultural University, Taigu, 030801 Shanxi China
| | - Liheng He
- College of Agriculture, Shanxi Agricultural University, Taigu, 030801 Shanxi China
| | - Peng Li
- College of life sciences, Shanxi Agricultural University, Taigu, 030801 Shanxi China
| | - Yuanrui Shi
- College of life sciences, Shanxi Agricultural University, Taigu, 030801 Shanxi China
| | - Qing Yang
- College of life sciences, Nanjing Agricultural University, Nanjing, 210095 Jiangsu China
| | - Xiaoyun Jia
- College of life sciences, Shanxi Agricultural University, Taigu, 030801 Shanxi China
| | - Xiu-Qing Li
- Fredericton Research and Development Centre, Agriculture and Agri-Food Canada, Fredericton, New Brunswick E3B 4Z7 Canada
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Liu Y, Luo Y, Yan S, Lian YF, Wu S, Xu M, Feng L, Zhang X, Li R, Zhang X, Feng QS, Zeng YX, Zhang H. CRL2 KLHDC3 mediates p14ARF N-terminal ubiquitylation degradation to promote non-small cell lung carcinoma progression. Oncogene 2022; 41:3104-3117. [PMID: 35468939 DOI: 10.1038/s41388-022-02318-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 03/24/2022] [Accepted: 04/06/2022] [Indexed: 11/09/2022]
Abstract
Kelch superfamily involves a variety of proteins containing multiple kelch motif and is well characterized as substrate adaptors for CUL3 E3 ligases, which play critical roles in carcinogenesis. However, the role of kelch proteins in lung cancer remains largely unknown. In this study, the non-small cell lung cancer (NSCLC) patients with higher expression of a kelch protein, kelch domain containing 3 (KLHDC3), showed worse overall survival. KLHDC3 deficiency affected NSCLC cell lines proliferation in vitro and in vivo. Further study indicated that KLHDC3 mediated CUL2 E3 ligase and tumor suppressor p14ARF interaction, facilitating the N-terminal ubiquitylation and subsequent degradation of p14ARF. Interestingly, Gefitinib-resistant NSCLC cell lines displayed higher KLHDC3 protein levels. Gefitinib and Osimertinib medications were capable of upregulating KLHDC3 expression to promote p14ARF degradation in the NSCLC cell lines. KLHDC3 shortage significantly increased the sensitivity of lung cancer cells to epidermal growth factor receptor (EGFR)-targeted drugs, providing an alternative explanation for the development of Gefitinib and Osimertinib resistance in NSCLC therapy. Our works suggest that CRL2KLHDC3 could be a valuable target to regulate the abundance of p14ARF and postpone the occurrence of EGFR-targeted drugs resistance.
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Affiliation(s)
- Yang Liu
- Department of Experimental Research, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou, 510060, China
| | - Yuewen Luo
- Institute of Human Virology, Key Laboratory of Tropical Disease Control of Ministry of Education, Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, China.,School of Medicine, Sun Yat-sen University, Guangzhou/Shenzhen, 510080, China
| | - Shumei Yan
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Department of Pathology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Yi-Fan Lian
- Guangdong Provincial Key Laboratory of Liver Disease Research, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Shiyu Wu
- Institute of Human Virology, Key Laboratory of Tropical Disease Control of Ministry of Education, Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Miao Xu
- Department of Experimental Research, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou, 510060, China
| | - Lin Feng
- Department of Experimental Research, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou, 510060, China
| | - Xu Zhang
- Institute of Human Virology, Key Laboratory of Tropical Disease Control of Ministry of Education, Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Rong Li
- Institute of Human Virology, Key Laboratory of Tropical Disease Control of Ministry of Education, Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Xiantao Zhang
- Institute of Human Virology, Key Laboratory of Tropical Disease Control of Ministry of Education, Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Qi-Sheng Feng
- Department of Experimental Research, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou, 510060, China
| | - Yi-Xin Zeng
- Department of Experimental Research, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou, 510060, China.
| | - Hui Zhang
- Institute of Human Virology, Key Laboratory of Tropical Disease Control of Ministry of Education, Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, China.
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Zhao M, Ge Y, Xu Z, Ouyang X, Jia Y, Liu J, Zhang M, An Y. A BTB/POZ domain-containing protein negatively regulates plant immunity in Nicotiana benthamiana. Biochem Biophys Res Commun 2022; 600:54-59. [PMID: 35189497 DOI: 10.1016/j.bbrc.2022.02.050] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 02/14/2022] [Indexed: 01/17/2023]
Abstract
Plants have evolved immune systems to fight against pathogens. However, it is still largely unknown how the plant immunity is finely regulated. Here we identified a BTB/POZ domain-containing protein, namely NbBTB, which is predicted to be a member of the ubiquitin E3 ligase complex. The NbBTB expression is downregulated upon the oomycete pathogen Phytophthora parasitica infection. Overexpression of NbBTB in Nicotiana benthamiana promoted plant susceptibility to P. parasitica infection, and silencing NbBTB increased plant resistance to P. parasitica, indicating that NbBTB negatively modulates plant basal defense. Interestingly, overexpressing or silencing NbBTB did not affect plant resistance to two bacterial pathogens Ralstonia solanacearum and Pseudomonas syringae, suggesting that NbBTB is specifically involved in basal defense against oomycete pathogen. Expression of NbBTB suppressed hypersensitive response (HR) triggered by avirulence proteins from both R. sonanacearum and P. infestans, and silencing NbBTB showed the opposite effect, indicating that NbBTB negatively regulates effector-triggered immunity (ETI). Protein accumulation of avirulence effectors in NbBTB-silenced plants was significantly enhanced, suggesting that NbBTB is likely to negatively modulate ETI by affecting effector protein accumulation. Together, our results demonstrated that NbBTB is a negative regulator in both plant basal defense and ETI.
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Affiliation(s)
- Mengwei Zhao
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yu Ge
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Zhangyan Xu
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xue Ouyang
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yuling Jia
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jiangtao Liu
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Meixiang Zhang
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Yuyan An
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, 210095, China.
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Qu Y, Cao H, Huang P, Wang J, Liu X, Lu J, Lin FC. A kelch domain cell end protein, PoTea1, mediates cell polarization during appressorium morphogenesis in Pyricularia oryzae. Microbiol Res 2022; 259:126999. [DOI: 10.1016/j.micres.2022.126999] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 02/08/2022] [Accepted: 02/27/2022] [Indexed: 01/01/2023]
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40
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Gu X, Hu X, Wang D, Xu Z, Wang F, Li D, Li GL, Yang H, Li H, Zuo E, Shu Y. Treatment of autosomal recessive hearing loss via in vivo CRISPR/Cas9-mediated optimized homology-directed repair in mice. Cell Res 2022; 32:699-702. [PMID: 35197607 DOI: 10.1038/s41422-022-00624-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 01/13/2022] [Indexed: 12/23/2022] Open
Affiliation(s)
- Xi Gu
- ENT institute and Department of Otorhinolaryngology, Eye & ENT Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China.,Institutes of Biomedical Sciences, Fudan University, Shanghai, China.,Department of Otolaryngology, the First Affiliated Hospital of Fujian Medical University, Fuzhou, China.,NHC Key Laboratory of Hearing Medicine (Fudan University), Shanghai, China
| | - Xinde Hu
- Institute of Neuroscience, State Key Laboratory of Neuroscience, Key Laboratory of Primate Neurobiology, CAS Center for Excellence in Brain Science and Intelligence Technology, Shanghai Research Center for Brain Science and Brain-Inspired Intelligence, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Daqi Wang
- ENT institute and Department of Otorhinolaryngology, Eye & ENT Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China.,Institutes of Biomedical Sciences, Fudan University, Shanghai, China.,NHC Key Laboratory of Hearing Medicine (Fudan University), Shanghai, China
| | - Zhijiao Xu
- ENT institute and Department of Otorhinolaryngology, Eye & ENT Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China.,Institutes of Biomedical Sciences, Fudan University, Shanghai, China.,NHC Key Laboratory of Hearing Medicine (Fudan University), Shanghai, China
| | - Fang Wang
- ENT institute and Department of Otorhinolaryngology, Eye & ENT Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China.,Institutes of Biomedical Sciences, Fudan University, Shanghai, China.,NHC Key Laboratory of Hearing Medicine (Fudan University), Shanghai, China
| | - Di Li
- State Key Lab for Conservation and Utilization of Subtropical Agric-Biological Resources, Guangxi University, Nanning, China.,Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
| | - Geng-Lin Li
- ENT institute and Department of Otorhinolaryngology, Eye & ENT Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China.,Institutes of Biomedical Sciences, Fudan University, Shanghai, China.,NHC Key Laboratory of Hearing Medicine (Fudan University), Shanghai, China
| | - Hui Yang
- Institute of Neuroscience, State Key Laboratory of Neuroscience, Key Laboratory of Primate Neurobiology, CAS Center for Excellence in Brain Science and Intelligence Technology, Shanghai Research Center for Brain Science and Brain-Inspired Intelligence, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Huawei Li
- ENT institute and Department of Otorhinolaryngology, Eye & ENT Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China. .,Institutes of Biomedical Sciences, Fudan University, Shanghai, China. .,NHC Key Laboratory of Hearing Medicine (Fudan University), Shanghai, China. .,The Institutes of Brain Science and the Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, China.
| | - Erwei Zuo
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China.
| | - Yilai Shu
- ENT institute and Department of Otorhinolaryngology, Eye & ENT Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China. .,Institutes of Biomedical Sciences, Fudan University, Shanghai, China. .,NHC Key Laboratory of Hearing Medicine (Fudan University), Shanghai, China.
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Annunziata R, Mele BH, Marotta P, Volpe M, Entrambasaguas L, Mager S, Stec K, d’Alcalà MR, Sanges R, Finazzi G, Iudicone D, Montresor M, Ferrante MI. Trade-off between sex and growth in diatoms: Molecular mechanisms and demographic implications. SCIENCE ADVANCES 2022; 8:eabj9466. [PMID: 35044817 PMCID: PMC8769554 DOI: 10.1126/sciadv.abj9466] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Diatoms are fast-growing and winning competitors in aquatic environments, possibly due to optimized growth performance. However, their life cycles are complex, heteromorphic, and not fully understood. Here, we report on the fine control of cell growth and physiology during the sexual phase of the marine diatom Pseudo-nitzschia multistriata. We found that mating, under nutrient replete conditions, induces a prolonged growth arrest in parental cells. Transcriptomic analyses revealed down-regulation of genes related to major metabolic functions from the early phases of mating. Single-cell photophysiology also pinpointed an inhibition of photosynthesis and storage lipids accumulated in the arrested population, especially in gametes and zygotes. Numerical simulations revealed that growth arrest affects the balance between parental cells and their siblings, possibly favoring the new generation. Thus, in addition to resources availability, life cycle traits contribute to shaping the species ecological niches and must be considered to describe and understand the structure of plankton communities.
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Affiliation(s)
- Rossella Annunziata
- Stazione Zoologica Anton Dohrn, Napoli, Italy
- Corresponding author. (R.A.); (M.I.F.)
| | | | | | | | | | | | | | | | - Remo Sanges
- International School for Advanced Studies (SISSA), Via Bonomea 265, Trieste 34136, Italy
| | - Giovanni Finazzi
- Université Grenoble Alpes (UGA), Centre National Recherche Scientifique (CNRS), Commissariat Energie Atomique, Energies Alternatives (CEA), Institut National Recherche Agriculture, Alimentation, Environnement (INRAE), Interdisciplinary Research Institute of Grenoble, IRIG-Laboratoire de Physiologie Cellulaire et Végétale, Grenoble, France
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Ashrafizadeh M, Ahmadi Z, Yaribeygi H, Sathyapalan T, Jamialahmadi T, Sahebkar A. The Effects of Ginsenosides on the Nrf2 Signaling Pathway. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1328:307-322. [PMID: 34981486 DOI: 10.1007/978-3-030-73234-9_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Nuclear factor erythroid-2 related factor 2 (Nrf2) is a major signaling pathway for the maintenance of homeostasis and redox balance. This pathway also plays a significant role in proteostasis, xenobiotic/drug metabolism, apoptosis, and lipid and carbohydrate metabolism. Conversely, the Nrf2 signaling pathway is impaired in several pathological conditions including cancer. Although various drugs have been developed to target the Nrf2 pathway, plant-derived chemicals than can potentially impact this pathway and are particularly attractive due to their minimal side effects. Ginsenosides are active components of ginseng and have been shown to exert pharmacological effects including antioxidant, anti-inflammatory, antitumor, antidiabetes, neuroprotective, and hepatoprotective activities. In this article, we have reviewed the effects of ginsenosides on Nrf2 signaling pathway.
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Affiliation(s)
- Milad Ashrafizadeh
- Faculty of Engineering and Natural Sciences, Sabanci University, Istanbul, Istanbul, Turkey.,Sabanci University Nanotechnology Research and Application Center (SUNUM), Tuzla, Istanbul, Turkey
| | - Zahra Ahmadi
- Department of Basic Science, Shoushtar Branch, Islamic Azad University, Shoushtar, Iran
| | - Habib Yaribeygi
- Research Center of Physiology, Semnan University of Medical Sciences, Semnan, Iran.
| | - Thozhukat Sathyapalan
- Academic Diabetes, Endocrinology and Metabolism, Hull York Medical School, University of Hull, Hull, UK
| | - Tannaz Jamialahmadi
- Department of Food Science and Technology, Quchan Branch, Islamic Azad University, Quchan, Iran.,Department of Nutrition, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amirhossein Sahebkar
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran. .,Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran. .,School of Medicine, The University of Western Australia, Perth, Australia. .,School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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Yang H, Wang D, Guo L, Pan H, Yvon R, Garman S, Wu HM, Cheung AY. Malectin/Malectin-like domain-containing proteins: A repertoire of cell surface molecules with broad functional potential. Cell Surf 2021; 7:100056. [PMID: 34308005 PMCID: PMC8287233 DOI: 10.1016/j.tcsw.2021.100056] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 06/06/2021] [Accepted: 06/18/2021] [Indexed: 11/26/2022] Open
Abstract
Cell walls are at the front line of interactions between walled-organisms and their environment. They support cell expansion, ensure cell integrity and, for multicellular organisms such as plants, they provide cell adherence, support cell shape morphogenesis and mediate cell-cell communication. Wall-sensing, detecting perturbations in the wall and signaling the cell to respond accordingly, is crucial for growth and survival. In recent years, plant signaling research has suggested that a large family of receptor-like kinases (RLKs) could function as wall sensors partly because their extracellular domains show homology with malectin, a diglucose binding protein from the endoplasmic reticulum of animal cells. Studies of several malectin/malectin-like (M/ML) domain-containing RLKs (M/MLD-RLKs) from the model plant Arabidopsis thaliana have revealed an impressive array of biological roles, controlling growth, reproduction and stress responses, processes that in various ways rely on or affect the cell wall. Malectin homologous sequences are widespread across biological kingdoms, but plants have uniquely evolved a highly expanded family of proteins with ML domains embedded within various protein contexts. Here, we present an overview on proteins with malectin homologous sequences in different kingdoms, discuss the chromosomal organization of Arabidopsis M/MLD-RLKs and the phylogenetic relationship between these proteins from several model and crop species. We also discuss briefly the molecular networks that enable the diverse biological roles served by M/MLD-RLKs studied thus far.
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Affiliation(s)
- He Yang
- Department of Biochemistry and Molecular Biology, University of Massachusetts, USA
- Molecular and Cellular Biology Program, University of Massachusetts, USA
| | - Dong Wang
- Department of Biochemistry and Molecular Biology, University of Massachusetts, USA
- Molecular and Cellular Biology Program, University of Massachusetts, USA
- Plant Biology Graduate Program, University of Massachusetts, Amherst, MA 01003, USA
| | - Li Guo
- Molecular and Cellular Biology Program, University of Massachusetts, USA
- Faculty of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China
| | - Huairong Pan
- Molecular and Cellular Biology Program, University of Massachusetts, USA
- College of Biology, Hunan University, Changsha 410082, China
| | - Robert Yvon
- Department of Biochemistry and Molecular Biology, University of Massachusetts, USA
- Molecular and Cellular Biology Program, University of Massachusetts, USA
| | - Scott Garman
- Department of Biochemistry and Molecular Biology, University of Massachusetts, USA
- Molecular and Cellular Biology Program, University of Massachusetts, USA
| | - Hen-Ming Wu
- Department of Biochemistry and Molecular Biology, University of Massachusetts, USA
- Molecular and Cellular Biology Program, University of Massachusetts, USA
| | - Alice Y. Cheung
- Department of Biochemistry and Molecular Biology, University of Massachusetts, USA
- Molecular and Cellular Biology Program, University of Massachusetts, USA
- Plant Biology Graduate Program, University of Massachusetts, Amherst, MA 01003, USA
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Ingham NJ, Banafshe N, Panganiban C, Crunden JL, Chen J, Lewis MA, Steel KP. Inner hair cell dysfunction in Klhl18 mutant mice leads to low frequency progressive hearing loss. PLoS One 2021; 16:e0258158. [PMID: 34597341 PMCID: PMC8486144 DOI: 10.1371/journal.pone.0258158] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 09/19/2021] [Indexed: 12/30/2022] Open
Abstract
Age-related hearing loss in humans (presbycusis) typically involves impairment of high frequency sensitivity before becoming progressively more severe at lower frequencies. Pathologies initially affecting lower frequency regions of hearing are less common. Here we describe a progressive, predominantly low-frequency recessive hearing impairment in two mutant mouse lines carrying different mutant alleles of the Klhl18 gene: a spontaneous missense mutation (Klhl18lowf) and a targeted mutation (Klhl18tm1a(KOMP)Wtsi). Both males and females were studied, and the two mutant lines showed similar phenotypes. Threshold for auditory brainstem responses (ABR; a measure of auditory nerve and brainstem neural activity) were normal at 3 weeks old but showed progressive increases from 4 weeks onwards. In contrast, distortion product otoacoustic emission (DPOAE) sensitivity and amplitudes (a reflection of cochlear outer hair cell function) remained normal in mutants. Electrophysiological recordings from the round window of Klhl18lowf mutants at 6 weeks old revealed 1) raised compound action potential thresholds that were similar to ABR thresholds, 2) cochlear microphonic potentials that were normal compared with wildtype and heterozygous control mice and 3) summating potentials that were reduced in amplitude compared to control mice. Scanning electron microscopy showed that Klhl18lowf mutant mice had abnormally tapering of the tips of inner hair cell stereocilia in the apical half of the cochlea while their synapses appeared normal. These results suggest that Klhl18 is necessary to maintain inner hair cell stereocilia and normal inner hair cell function at low frequencies.
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Affiliation(s)
- Neil J. Ingham
- Wolfson Centre for Age-Related Diseases, King’s College London, London, United Kingdom
| | - Navid Banafshe
- Wolfson Centre for Age-Related Diseases, King’s College London, London, United Kingdom
| | - Clarisse Panganiban
- Wolfson Centre for Age-Related Diseases, King’s College London, London, United Kingdom
| | - Julia L. Crunden
- Wolfson Centre for Age-Related Diseases, King’s College London, London, United Kingdom
| | - Jing Chen
- Wolfson Centre for Age-Related Diseases, King’s College London, London, United Kingdom
| | - Morag A. Lewis
- Wolfson Centre for Age-Related Diseases, King’s College London, London, United Kingdom
| | - Karen P. Steel
- Wolfson Centre for Age-Related Diseases, King’s College London, London, United Kingdom
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Gao L, Yang G, Li Y, Sun Y, Xu R, Chen Y, Wang Z, Xing J, Zhang Y. A kelch-repeat superfamily gene, ZmNL4, controls leaf width in maize (Zea mays L.). THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 107:817-830. [PMID: 34009654 DOI: 10.1111/tpj.15348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 05/07/2021] [Accepted: 05/13/2021] [Indexed: 06/12/2023]
Abstract
Leaf width (LW) is an important component of plant architecture that extensively affects both light capture during photosynthesis and grain yield, particularly under dense planting conditions. However, the genetic and molecular mechanisms regulating LW remain largely elusive in maize (Zea mays L.). In this study, qLW4a, a major quantitative trait locus controlling LW, was identified in a population constructed with maize inbred lines PH6WC, with wide leaves, and Lin387, with narrow leaves. Map-based cloning revealed that ZmNL4, a kelch-repeat superfamily gene, emerged to be the candidate for qLW4a, and a single-base deletion in the conserved SMC_prok_B domain of ZmNL4 in Lin387 caused a frame shift, leading to premature termination. Consistently, the knockout of ZmNL4 by CRISPR/Cas9 editing significantly reduced the LW, which was attributed to a reduction in the cell number instead of cell size, indicating a role of ZmNL4 in regulating cell division. Transcriptomic comparison of ZmNL4 knockout lines with the wild type B73-329 revealed that ZmNL4 might participate in cell wall biogenesis, asymmetric cell division, metabolic processes, transmembrane transport and response to external stimulus, etc. These results provide insights into the genetic and molecular mechanisms of ZmNL4 in controlling LW and could potentially contribute to optimizing plant architecture for maize breeding.
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Affiliation(s)
- Lulu Gao
- State Key Laboratory for Agrobiotechnology and Key Laboratory of Crop Heterosis and Utilization (MOE) and Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Guanghui Yang
- State Key Laboratory for Agrobiotechnology and Key Laboratory of Crop Heterosis and Utilization (MOE) and Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Yufeng Li
- State Key Laboratory for Agrobiotechnology and Key Laboratory of Crop Heterosis and Utilization (MOE) and Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Ying Sun
- State Key Laboratory for Agrobiotechnology and Key Laboratory of Crop Heterosis and Utilization (MOE) and Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Ruibin Xu
- State Key Laboratory for Agrobiotechnology and Key Laboratory of Crop Heterosis and Utilization (MOE) and Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Yongming Chen
- State Key Laboratory for Agrobiotechnology and Key Laboratory of Crop Heterosis and Utilization (MOE) and Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Zihao Wang
- State Key Laboratory for Agrobiotechnology and Key Laboratory of Crop Heterosis and Utilization (MOE) and Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Jiewen Xing
- State Key Laboratory for Agrobiotechnology and Key Laboratory of Crop Heterosis and Utilization (MOE) and Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Yirong Zhang
- State Key Laboratory for Agrobiotechnology and Key Laboratory of Crop Heterosis and Utilization (MOE) and Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
- National Maize Improvement Center of China, China Agricultural University, Beijing, 100193, China
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Behrens HM, Schmidt S, Spielmann T. The newly discovered role of endocytosis in artemisinin resistance. Med Res Rev 2021; 41:2998-3022. [PMID: 34309894 DOI: 10.1002/med.21848] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 04/15/2021] [Accepted: 07/03/2021] [Indexed: 12/28/2022]
Abstract
Artemisinin and its derivatives (ART) are the cornerstone of malaria treatment as part of artemisinin combination therapy (ACT). However, reduced susceptibility to artemisinin as well as its partner drugs threatens the usefulness of ACTs. Single point mutations in the parasite protein Kelch13 (K13) are necessary and sufficient for the reduced sensitivity of malaria parasites to ART but several alternative mechanisms for this resistance have been proposed. Recent work found that K13 is involved in the endocytosis of host cell cytosol and indicated that this is the process responsible for resistance in parasites with mutated K13. These studies also identified a series of further proteins that act together with K13 in the same pathway, including previously suspected resistance proteins such as UBP1 and AP-2μ. Here, we give a brief overview of artemisinin resistance, present the recent evidence of the role of endocytosis in ART resistance and discuss previous hypotheses in light of this new evidence. We also give an outlook on how the new insights might affect future research.
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Affiliation(s)
- Hannah Michaela Behrens
- Molecular Biology and Immunology Section, Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
| | - Sabine Schmidt
- Molecular Biology and Immunology Section, Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
| | - Tobias Spielmann
- Molecular Biology and Immunology Section, Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
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Tente E, Ereful N, Rodriguez AC, Grant P, O'Sullivan DM, Boyd LA, Gordon A. Reprogramming of the wheat transcriptome in response to infection with Claviceps purpurea, the causal agent of ergot. BMC PLANT BIOLOGY 2021; 21:316. [PMID: 34215204 PMCID: PMC8252325 DOI: 10.1186/s12870-021-03086-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 06/07/2021] [Indexed: 06/02/2023]
Abstract
BACKGROUND Ergot, caused by the fungal pathogen Claviceps purpurea, infects the female flowers of a range of cereal crops, including wheat. To understand the interaction between C. purpurea and hexaploid wheat we undertook an extensive examination of the reprogramming of the wheat transcriptome in response to C. purpurea infection through floral tissues (i.e. the stigma, transmitting and base ovule tissues of the ovary) and over time. RESULTS C. purpurea hyphae were observed to have grown into and down the stigma at 24 h (H) after inoculation. By 48H hyphae had grown through the transmitting tissue into the base, while by 72H hyphae had surrounded the ovule. By 5 days (D) the ovule had been replaced by fungal tissue. Differential gene expression was first observed at 1H in the stigma tissue. Many of the wheat genes differentially transcribed in response to C. purpurea infection were associated with plant hormones and included the ethylene (ET), auxin, cytokinin, gibberellic acid (GA), salicylic acid and jasmonic acid (JA) biosynthetic and signaling pathways. Hormone-associated genes were first detected in the stigma and base tissues at 24H, but not in the transmitting tissue. Genes associated with GA and JA pathways were seen in the stigma at 24H, while JA and ET-associated genes were identified in the base at 24H. In addition, several defence-related genes were differential expressed in response to C. purpurea infection, including antifungal proteins, endocytosis/exocytosis-related proteins, NBS-LRR class proteins, genes involved in programmed cell death, receptor protein kinases and transcription factors. Of particular interest was the identification of differential expression of wheat genes in the base tissue well before the appearance of fungal hyphae, suggesting that a mobile signal, either pathogen or plant-derived, is delivered to the base prior to colonisation. CONCLUSIONS Multiple host hormone biosynthesis and signalling pathways were significantly perturbed from an early stage in the wheat - C. purpurea interaction. Differential gene expression at the base of the ovary, ahead of arrival of the pathogen, indicated the potential presence of a long-distance signal modifying host gene expression.
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Affiliation(s)
- Eleni Tente
- NIAB, 93 Lawrence Weaver Road, Cambridge, CB3 0LE, UK
- Department of Plant Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EA, UK
| | - Nelzo Ereful
- NIAB, 93 Lawrence Weaver Road, Cambridge, CB3 0LE, UK
- Philippine Genome Center, Plant Physiology Laboratory, Institute of Plant Breeding, University of the Philippines, Los Baños, Laguna, The Philippines
| | | | - Paul Grant
- Department of Plant Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EA, UK
- Present Address: Microsoft Research, 21 Station Road, Cambridge, CB1 2FB, UK
| | - Donal M O'Sullivan
- School of Agriculture, Policy and Development, University of Reading, Whiteknights, Reading, RG6 6AR, UK
| | - Lesley A Boyd
- NIAB, 93 Lawrence Weaver Road, Cambridge, CB3 0LE, UK.
| | - Anna Gordon
- NIAB, 93 Lawrence Weaver Road, Cambridge, CB3 0LE, UK
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Panigrahi A, Esakkiraj P, Das RR, Saranya C, Vinay TN, Otta SK, Shekhar MS. Bioaugmentation of biofloc system with enzymatic bacterial strains for high health and production performance of Penaeus indicus. Sci Rep 2021; 11:13633. [PMID: 34211034 PMCID: PMC8249640 DOI: 10.1038/s41598-021-93065-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Accepted: 06/18/2021] [Indexed: 02/01/2023] Open
Abstract
The beneficial effects of two probiotic bacterial strains Marinilactibacillus piezotolerans and Novosphingobium sp. during the culture of Indian white shrimp, Penaeus indicus, under biofloc and clear water system were evaluated. The experimental variation were CW1 (M. piezotolerans in clear water), BFT1 (biofloc + M. piezotolerans), CW2 (Novosphingobium sp. in clear water), BFT2 (biofloc + Novosphingobium sp.) and control (without bacterial strains and biofloc). Growth and survival considerably increased in probiotic bio-augmented treatments. Probiotic incorporation significantly improved water quality, especially ammonia reduction. Microbiota analysis from gut samples taken from different treatments revealed varied microbial population structure among clear water culture, biofloc culture and control. Proteobacteria and Firmicutes were the top phyla observed in the treatments which were significantly higher in bio-augmented systems than the control. Vibrio genera were predominantly observed in control and clear water system compared to that of biofloc systems. Immune genes were significantly altered in response to probiotic gut microbial supplementation than the control. Higher gene expression profile of important immune genes was observed in the biofloc reared shrimps. Expression of digestive enzyme related genes such as trypsin, chymotrypsin, cathepsin L, cathepsin B and alpha amylase were also upregulated significantly in probiotic supplementation especially in the biofloc treatments. Proteomic analysis of hepatopancreas of shrimps from different treatments was carried out by using 2D gel electrophoresis and MALDI-TOF analysis. The proteins were mostly related to growth and stress tolerance. Eukaryotic initiation factor 4E binding protein was expressed in all the groups and it was high in biofloc treated animals followed by animals treated solely with probiotics compared to those of control groups. The results concludes that biofloc already proved as an effective culture method for healthy shrimp production and supplementation of probiotic bacterial strains registered additional benefit for growth, survival, microbial, immunological status of P, indicus culture.
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Affiliation(s)
- A Panigrahi
- ICAR-Central Institute of Brackishwater Aquaculture, 75, Santhome High Road, Raja Annamalaipuram, Chennai, 600 028, India.
| | - P Esakkiraj
- ICAR-Central Institute of Brackishwater Aquaculture, 75, Santhome High Road, Raja Annamalaipuram, Chennai, 600 028, India
| | - Rashmi Ranjan Das
- ICAR-Central Institute of Brackishwater Aquaculture, 75, Santhome High Road, Raja Annamalaipuram, Chennai, 600 028, India
| | - C Saranya
- ICAR-Central Institute of Brackishwater Aquaculture, 75, Santhome High Road, Raja Annamalaipuram, Chennai, 600 028, India
| | - T N Vinay
- ICAR-Central Institute of Brackishwater Aquaculture, 75, Santhome High Road, Raja Annamalaipuram, Chennai, 600 028, India
| | - S K Otta
- ICAR-Central Institute of Brackishwater Aquaculture, 75, Santhome High Road, Raja Annamalaipuram, Chennai, 600 028, India
| | - M Shashi Shekhar
- ICAR-Central Institute of Brackishwater Aquaculture, 75, Santhome High Road, Raja Annamalaipuram, Chennai, 600 028, India
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Ndwiga L, Kimenyi KM, Wamae K, Osoti V, Akinyi M, Omedo I, Ishengoma DS, Duah-Quashie N, Andagalu B, Ghansah A, Amambua-Ngwa A, Tukwasibwe S, Tessema SK, Karema C, Djimde AA, Dondorp AM, Raman J, Snow RW, Bejon P, Ochola-Oyier LI. A review of the frequencies of Plasmodium falciparum Kelch 13 artemisinin resistance mutations in Africa. INTERNATIONAL JOURNAL FOR PARASITOLOGY-DRUGS AND DRUG RESISTANCE 2021; 16:155-161. [PMID: 34146993 PMCID: PMC8219943 DOI: 10.1016/j.ijpddr.2021.06.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 05/28/2021] [Accepted: 06/07/2021] [Indexed: 12/23/2022]
Abstract
Artemisinin resistance (AR) emerged in South East Asia 13 years ago and the identification of the resistance conferring molecular marker, Plasmodium falciparum Kelch 13 (Pfk13), 7 years ago has provided an invaluable tool for monitoring AR in malaria endemic countries. Molecular Pfk13 surveillance revealed the resistance foci in the Greater Mekong Subregion, an independent emergence in Guyana, South America, and a low frequency of mutations in Africa. The recent identification of the R561H Pfk13 AR associated mutation in Tanzania, Uganda and in Rwanda, where it has been associated with delayed parasite clearance, should be a concern for the continent. In this review, we provide a summary of Pfk13 resistance associated propeller domain mutation frequencies across Africa from 2012 to 2020, to examine how many other countries have identified these mutations. Only four African countries reported a recent identification of the M476I, P553L, R561H, P574L, C580Y and A675V Pfk13 mutations at low frequencies and with no reports of clinical treatment failure, except for Rwanda. These mutations present a threat to malaria control across the continent, since the greatest burden of malaria remains in Africa. A rise in the frequency of these mutations and their spread would reverse the gains made in the reduction of malaria over the last 20 years, given the lack of new antimalarial treatments in the event artemisinin-based combination therapies fail. The review highlights the frequency of Pfk13 propeller domain mutations across Africa, providing an up-to-date perspective of Pfk13 mutations, and appeals for an urgent and concerted effort to monitoring antimalarial resistance markers in Africa and the efficacy of antimalarials by re-establishing sentinel surveillance systems.
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Affiliation(s)
- Leonard Ndwiga
- KEMRI-Wellcome Trust Collaborative Programme, P.O. Box 230, 80108, Kilifi, Kenya
| | - Kelvin M Kimenyi
- KEMRI-Wellcome Trust Collaborative Programme, P.O. Box 230, 80108, Kilifi, Kenya; Centre for Biotechnology and Bioinformatics, University of Nairobi, Nairobi, Kenya
| | - Kevin Wamae
- KEMRI-Wellcome Trust Collaborative Programme, P.O. Box 230, 80108, Kilifi, Kenya
| | - Victor Osoti
- KEMRI-Wellcome Trust Collaborative Programme, P.O. Box 230, 80108, Kilifi, Kenya
| | - Mercy Akinyi
- KEMRI-Wellcome Trust Collaborative Programme, P.O. Box 230, 80108, Kilifi, Kenya; Institute of Primate Research, National Museums of Kenya, Nairobi, Kenya
| | - Irene Omedo
- KEMRI-Wellcome Trust Collaborative Programme, P.O. Box 230, 80108, Kilifi, Kenya; Big Data Institute at the Li Ka Shing Centre for Health Information and Discovery, University of Oxford, Oxford, United Kingdom
| | - Deus S Ishengoma
- National Institute for Medical Research (NIMR), Dar es Salaam, Tanzania
| | - Nancy Duah-Quashie
- Department of Epidemiology, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Accra, Ghana
| | - Ben Andagalu
- United States Army Medical Research Directorate-Africa, Kenya Medical Research Institute/Walter Reed Project, Kisumu, Kenya
| | - Anita Ghansah
- Department of Parasitology, Noguchi Memorial Institute for Medical Research (NMIMR), Accra, Ghana
| | | | | | | | - Corine Karema
- Swiss Tropical and Public Health Institute, Basel, Switzerland; University of Basel, Basel, Switzerland; Quality and Equity Healthcare, Kigali, Rwanda
| | - Abdoulaye A Djimde
- Malaria Research and Training Centre, University of Science, Techniques and Technologies of Bamako, Bamako, Mali
| | - Arjen M Dondorp
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom; Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Jaishree Raman
- Centre for Emerging Zoonotic and Parasitic Diseases, National Institute for Communicable Disease, Sandringham, Gauteng, South Africa; Wits Research Institute for Malaria, Univerisity of Witwatersrand, Johannesburg, South Africa
| | - Robert W Snow
- KEMRI-Wellcome Trust Collaborative Programme, P.O. Box 230, 80108, Kilifi, Kenya; Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Philip Bejon
- KEMRI-Wellcome Trust Collaborative Programme, P.O. Box 230, 80108, Kilifi, Kenya; Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
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Sharma S, Advani D, Das A, Malhotra N, Khosla A, Arora V, Jha A, Yadav M, Ambasta RK, Kumar P. Pharmacological intervention in oxidative stress as a therapeutic target in neurological disorders. J Pharm Pharmacol 2021; 74:461-484. [PMID: 34050648 DOI: 10.1093/jpp/rgab064] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 04/01/2021] [Indexed: 12/18/2022]
Abstract
OBJECTIVES Oxidative stress is a major cellular burden that triggers reactive oxygen species (ROS) and antioxidants that modulate signalling mechanisms. Byproducts generated from this process govern the brain pathology and functions in various neurological diseases. As oxidative stress remains the key therapeutic target in neurological disease, it is necessary to explore the multiple routes that can significantly repair the damage caused due to ROS and consequently, neurodegenerative disorders (NDDs). Nicotinamide adenine dinucleotide phosphate (NADPH) oxidase is the critical player of oxidative stress that can also be used as a therapeutic target to combat NDDs. KEY FINDINGS Several antioxidants signalling pathways are found to be associated with oxidative stress and show a protective effect against stressors by increasing the release of various cytoprotective enzymes and also exert anti-inflammatory response against this oxidative damage. These pathways along with antioxidants and reactive species can be the defined targets to eliminate or reduce the harmful effects of neurological diseases. SUMMARY Herein, we discussed the underlying mechanism and crucial role of antioxidants in therapeutics together with natural compounds as a pharmacological tool to combat the cellular deformities cascades caused due to oxidative stress.
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Affiliation(s)
- Sudhanshu Sharma
- Molecular Neuroscience and Functional Genomics Laboratory, Department of Biotechnology, Delhi Technological University (Formerly DCE), Delhi, India
| | - Dia Advani
- Molecular Neuroscience and Functional Genomics Laboratory, Department of Biotechnology, Delhi Technological University (Formerly DCE), Delhi, India
| | - Ankita Das
- Molecular Neuroscience and Functional Genomics Laboratory, Department of Biotechnology, Delhi Technological University (Formerly DCE), Delhi, India
| | - Nishtha Malhotra
- Molecular Neuroscience and Functional Genomics Laboratory, Department of Biotechnology, Delhi Technological University (Formerly DCE), Delhi, India
| | - Akanksha Khosla
- Molecular Neuroscience and Functional Genomics Laboratory, Department of Biotechnology, Delhi Technological University (Formerly DCE), Delhi, India
| | - Vanshika Arora
- Molecular Neuroscience and Functional Genomics Laboratory, Department of Biotechnology, Delhi Technological University (Formerly DCE), Delhi, India
| | - Ankita Jha
- Molecular Neuroscience and Functional Genomics Laboratory, Department of Biotechnology, Delhi Technological University (Formerly DCE), Delhi, India
| | - Megha Yadav
- Molecular Neuroscience and Functional Genomics Laboratory, Department of Biotechnology, Delhi Technological University (Formerly DCE), Delhi, India
| | - Rashmi K Ambasta
- Molecular Neuroscience and Functional Genomics Laboratory, Department of Biotechnology, Delhi Technological University (Formerly DCE), Delhi, India
| | - Pravir Kumar
- Molecular Neuroscience and Functional Genomics Laboratory, Department of Biotechnology, Delhi Technological University (Formerly DCE), Delhi, India
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