1
|
Contreras-Martínez OI, Angulo-Ortíz A, Santafé-Patiño G, Aviña-Padilla K, Velasco-Pareja MC, Yasnot MF. Transcriptional Reprogramming of Candida tropicalis in Response to Isoespintanol Treatment. J Fungi (Basel) 2023; 9:1199. [PMID: 38132799 PMCID: PMC10744401 DOI: 10.3390/jof9121199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 12/12/2023] [Accepted: 12/13/2023] [Indexed: 12/23/2023] Open
Abstract
Candida tropicalis, an opportunistic pathogen, ranks among the primary culprits of invasive candidiasis, a condition notorious for its resistance to conventional antifungal drugs. The urgency to combat these drug-resistant infections has spurred the quest for novel therapeutic compounds, with a particular focus on those of natural origin. In this study, we set out to evaluate the impact of isoespintanol (ISO), a monoterpene derived from Oxandra xylopioides, on the transcriptome of C. tropicalis. Leveraging transcriptomics, our research aimed to unravel the intricate transcriptional changes induced by ISO within this pathogen. Our differential gene expression analysis unveiled 186 differentially expressed genes (DEGs) in response to ISO, with a striking 85% of these genes experiencing upregulation. These findings shed light on the multifaceted nature of ISO's influence on C. tropicalis, spanning a spectrum of physiological, structural, and metabolic adaptations. The upregulated DEGs predominantly pertained to crucial processes, including ergosterol biosynthesis, protein folding, response to DNA damage, cell wall integrity, mitochondrial activity modulation, and cellular responses to organic compounds. Simultaneously, 27 genes were observed to be repressed, affecting functions such as cytoplasmic translation, DNA damage checkpoints, membrane proteins, and metabolic pathways like trans-methylation, trans-sulfuration, and trans-propylamine. These results underscore the complexity of ISO's antifungal mechanism, suggesting that it targets multiple vital pathways within C. tropicalis. Such complexity potentially reduces the likelihood of the pathogen developing rapid resistance to ISO, making it an attractive candidate for further exploration as a therapeutic agent. In conclusion, our study provides a comprehensive overview of the transcriptional responses of C. tropicalis to ISO exposure. The identified molecular targets and pathways offer promising avenues for future research and the development of innovative antifungal therapies to combat infections caused by this pathogenic yeast.
Collapse
Affiliation(s)
| | - Alberto Angulo-Ortíz
- Chemistry Department, Faculty of Basic Sciences, University of Córdoba, Montería 230002, Colombia; (A.A.-O.); (G.S.-P.)
| | - Gilmar Santafé-Patiño
- Chemistry Department, Faculty of Basic Sciences, University of Córdoba, Montería 230002, Colombia; (A.A.-O.); (G.S.-P.)
| | - Katia Aviña-Padilla
- Center for Research and Advanced Studies of the I.P.N. Unit Irapuato, Irapuato 36821, Mexico;
| | - María Camila Velasco-Pareja
- Bacteriology Department, Faculty of Health Sciences, University of Córdoba, Montería 230002, Colombia; (M.C.V.-P.); (M.F.Y.)
| | - María Fernanda Yasnot
- Bacteriology Department, Faculty of Health Sciences, University of Córdoba, Montería 230002, Colombia; (M.C.V.-P.); (M.F.Y.)
| |
Collapse
|
2
|
Autophagy Is Required to Sustain Increased Intestinal Cell Proliferation during Phenotypic Plasticity Changes in Honey Bee ( Apis mellifera). Int J Mol Sci 2023; 24:ijms24031926. [PMID: 36768248 PMCID: PMC9916008 DOI: 10.3390/ijms24031926] [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: 11/29/2022] [Revised: 01/08/2023] [Accepted: 01/10/2023] [Indexed: 01/20/2023] Open
Abstract
Tissue phenotypic plasticity facilitates rapid adaptation of organisms to biotic and/or abiotic pressure. The reproductive capacity of honey bee workers (Apis mellifera) is plastic and responsive to pheromones produced by broods and the queen. Egg laying workers (ELWs), which could reactivate their ovaries and lay haploid eggs upon queen lost, have been commonly discussed from many aspects. However, it remains unclear whether midgut homeostasis in ELWs is affected during plastic changes. Here, we found that the expression of nutrition- and autophagy-related genes was up-regulated in the midguts of ELWs, compared with that in nurse workers (NWs) by RNA-sequencing. Furthermore, the area and number of autophagosomes were increased, along with significantly increased cell death in the midguts of ELWs. Moreover, cell cycle progression in the midguts of ELWs was increased compared with that in NWs. Consistent with the up-regulation of nutrition-related genes, the body and midgut sizes, and the number of intestinal proliferation cells of larvae reared with royal jelly (RJ) obviously increased more than those reared without RJ in vitro. Finally, cell proliferation was dramatically suppressed in the midguts of ELWs when autophagy was inhibited. Altogether, our data suggested that autophagy was induced and required to sustain cell proliferation in ELWs' midguts, thereby revealing the critical role of autophagy played in the intestines during phenotypic plasticity changes.
Collapse
|
3
|
Kunc M, Dobeš P, Ward R, Lee S, Čegan R, Dostálková S, Holušová K, Hurychová J, Eliáš S, Pinďáková E, Čukanová E, Prodělalová J, Petřivalský M, Danihlík J, Havlík J, Hobza R, Kavanagh K, Hyršl P. Omics-based analysis of honey bee (Apis mellifera) response to Varroa sp. parasitisation and associated factors reveals changes impairing winter bee generation. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2023; 152:103877. [PMID: 36403678 DOI: 10.1016/j.ibmb.2022.103877] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 10/24/2022] [Accepted: 11/13/2022] [Indexed: 06/16/2023]
Abstract
The extensive annual loss of honey bees (Apis mellifera L.) represents a global problem affecting agriculture and biodiversity. The parasitic mite Varroa destructor, associated with viral co-infections, plays a key role in this loss. Despite years of intensive research, the complex mechanisms of Varroa - honey bee interaction are still not fully defined. Therefore, this study employed a unique combination of transcriptomic, proteomic, metabolomic, and functional analyses to reveal new details about the effect of Varroa mites and naturally associated factors, including viruses, on honey bees. We focused on the differences between Varroa parasitised and unparasitised ten-day-old worker bees collected before overwintering from the same set of colonies reared without anti-mite treatment. Supplementary comparison to honey bees collected from colonies with standard anti-Varroa treatment can provide further insights into the effect of a pyrethroid flumethrin. Analysis of the honey bees exposed to mite parasitisation revealed alterations in the transcriptome and proteome related to immunity, oxidative stress, olfactory recognition, metabolism of sphingolipids, and RNA regulatory mechanisms. The immune response and sphingolipid metabolism were strongly activated, whereas olfactory recognition and oxidative stress pathways were inhibited in Varroa parasitised honey bees compared to unparasitised ones. Moreover, metabolomic analysis confirmed the depletion of nutrients and energy stores, resulting in a generally disrupted metabolism in the parasitised workers. The combined omics-based analysis conducted on strictly parasitised bees revealed the key molecular components and mechanisms underlying the detrimental effects of Varroa sp. and its associated pathogens. This study provides the theoretical basis and interlinked datasets for further research on honey bee response to biological threats and the development of efficient control strategies against Varroa mites.
Collapse
Affiliation(s)
- Martin Kunc
- Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Pavel Dobeš
- Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic.
| | - Rachel Ward
- Department of Biology, Maynooth University, W23 F2K8 Maynooth, Co. Kildare, Ireland
| | - Saetbyeol Lee
- Department of Food Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, 165 00, Prague, Czech Republic
| | - Radim Čegan
- Department of Plant Developmental Genetics, Institute of Biophysics of the Czech Academy of Sciences, Královopolská 135, 612 00, Brno, Czech Republic
| | - Silvie Dostálková
- Department of Biochemistry, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, 783 71, Olomouc, Czech Republic
| | - Kateřina Holušová
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, 779 00, Olomouc, Czech Republic
| | - Jana Hurychová
- Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Sara Eliáš
- Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Eliška Pinďáková
- Department of Biochemistry, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, 783 71, Olomouc, Czech Republic
| | - Eliška Čukanová
- Department of Infectious Disease and Preventive Medicine, Veterinary Research Institute, Hudcova 296/70, 621 00, Brno, Czech Republic
| | - Jana Prodělalová
- Department of Infectious Disease and Preventive Medicine, Veterinary Research Institute, Hudcova 296/70, 621 00, Brno, Czech Republic
| | - Marek Petřivalský
- Department of Biochemistry, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, 783 71, Olomouc, Czech Republic
| | - Jiří Danihlík
- Department of Biochemistry, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, 783 71, Olomouc, Czech Republic
| | - Jaroslav Havlík
- Department of Food Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, 165 00, Prague, Czech Republic
| | - Roman Hobza
- Department of Plant Developmental Genetics, Institute of Biophysics of the Czech Academy of Sciences, Královopolská 135, 612 00, Brno, Czech Republic
| | - Kevin Kavanagh
- Department of Biology, Maynooth University, W23 F2K8 Maynooth, Co. Kildare, Ireland
| | - Pavel Hyršl
- Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| |
Collapse
|
4
|
Shi XX, Zhang H, Quais MK, Chen M, Wang N, Zhang C, Mao C, Zhu ZR. Knockdown of sphingomyelinase (NlSMase) causes ovarian malformation of brown planthopper, Nilaparvata lugens (Stål). INSECT MOLECULAR BIOLOGY 2022; 31:391-402. [PMID: 35156743 DOI: 10.1111/imb.12767] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 12/16/2021] [Accepted: 02/08/2022] [Indexed: 06/14/2023]
Abstract
Sphingomyelinases (SMases) are a group of enzymes that catalyse the hydrolysis of sphingomyelins into ceramides and phosphorylcholine. They have been intensively investigated for their pathophysiological roles in mammals whereas much remains unclear about their counterparts in insects. Herein we report the cloning and functional characterization of four SMase homologue genes, designated NlSMase1-4, from brown planthopper (BPH). The phylogenetic analysis revealed that NlSMase1 and NlSMase2 were clustered into acid SMase family, and NlSMase3 and NlSMase4 with neutral SMase family. NlSMase1, NlSMase3 and NlSMase4 were highly expressed in BPH females, and NlSMaes2 in the 5th instar nymph. All four NlSMases had the lowest transcription in BPH males. NlSMase1 and NlSMase4 were highly expressed in BPH ovaries, while NlSMase2 and NlSMase3 in midgut and wings, respectively. Knocking-down of each NlSMase individual by RNA interference (RNAi) caused the ovarian malformation in BPH. The transcriptomic analysis revealed that NlSMase4 knockdown could strongly affect diacylglycerol (DAG)-related metabolisms and their downstream pathways. Further, qRT-PCR analysis of vitellogenin (Vg) genes indicates that the DAG metabolism disorder could interrupt the essential Vg accumulation for BPH oogenesis. Our study demonstrates the vital role of NlSMases in BPH reproductive development and provides new insights into the mediated mechanism of how SMases function.
Collapse
Affiliation(s)
- Xiao-Xiao Shi
- State Key Laboratory of Rice Biology; Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, and Institute of Insect Sciences, Zhejiang University, Hangzhou, Zhejiang, China
- Institute for Intelligent Bio/Chem Manufacturing (iBCM), ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, Zhejian, China
| | - He Zhang
- State Key Laboratory of Rice Biology; Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, and Institute of Insect Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Md Khairul Quais
- State Key Laboratory of Rice Biology; Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, and Institute of Insect Sciences, Zhejiang University, Hangzhou, Zhejiang, China
- Senior Scientific Officer, Rice Farming Systems Division, Bangladesh Rice Research Institute, Gazipur, Bangladesh
| | - Ming Chen
- State Key Laboratory of Rice Biology; Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, and Institute of Insect Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Ni Wang
- State Key Laboratory of Rice Biology; Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, and Institute of Insect Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Chao Zhang
- State Key Laboratory of Rice Biology; Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, and Institute of Insect Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Cungui Mao
- Department of Medicine and Stony Brook Cancer Center, Stony Brook University, Stony Brook, New York, USA
| | - Zeng-Rong Zhu
- State Key Laboratory of Rice Biology; Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, and Institute of Insect Sciences, Zhejiang University, Hangzhou, Zhejiang, China
- Hainan Research Institute, Zhejiang University, Sanya, Hainan, China
| |
Collapse
|
5
|
Chen Y, Zhou H, Lai Y, Chen Q, Yu XQ, Wang X. Gut Microbiota Dysbiosis Influences Metabolic Homeostasis in Spodoptera frugiperda. Front Microbiol 2021; 12:727434. [PMID: 34659154 PMCID: PMC8514726 DOI: 10.3389/fmicb.2021.727434] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 08/31/2021] [Indexed: 01/08/2023] Open
Abstract
Insect gut microbiota plays important roles in acquiring nutrition, preventing pathogens infection, modulating immune responses, and communicating with environment. Gut microbiota can be affected by external factors such as foods and antibiotics. Spodoptera frugiperda (Lepidoptera: Noctuidae) is an important destructive pest of grain crops worldwide. The function of gut microbiota in S. frugiperda remains to be investigated. In this study, we fed S. frugiperda larvae with artificial diet with antibiotic mixture (penicillin, gentamicin, rifampicin, and streptomycin) to perturb gut microbiota, and then examined the effect of gut microbiota dysbiosis on S. frugiperda gene expression by RNA sequencing. Firmicutes, Proteobacteria, Bacteroidetes, and Actinobacteria were the most dominant phyla in S. frugiperda. We found that the composition and diversity of gut bacterial community were changed in S. frugiperda after antibiotics treatment. Firmicutes was decreased, and abundance of Enterococcus and Weissella genera was dramatically reduced. Transcriptome analysis showed that 1,394 differentially expressed transcripts (DETs) were found between the control and antibiotics-treated group. The Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) results showed that antibiotics-induced dysbiosis affected many biological processes, such as energy production, metabolism, and the autophagy–lysosome signal pathway. Our results indicated that dysbiosis of gut microbiota by antibiotics exposure affects energy and metabolic homeostasis in S. frugiperda, which help better understand the role of gut microbiota in insects.
Collapse
Affiliation(s)
- Yaqing Chen
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, School of Life Sciences, Institute of Insect Science and Technology, South China Normal University, Guangzhou, China
| | - Huanchan Zhou
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, School of Life Sciences, Institute of Insect Science and Technology, South China Normal University, Guangzhou, China
| | - Yushan Lai
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, School of Life Sciences, Institute of Insect Science and Technology, South China Normal University, Guangzhou, China
| | - Qi Chen
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, School of Life Sciences, Institute of Insect Science and Technology, South China Normal University, Guangzhou, China
| | - Xiao-Qiang Yu
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, School of Life Sciences, Institute of Insect Science and Technology, South China Normal University, Guangzhou, China
| | - Xiaoyun Wang
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, School of Life Sciences, Institute of Insect Science and Technology, South China Normal University, Guangzhou, China
| |
Collapse
|
6
|
Lin YB, Rong JJ, Wei XF, Sui ZX, Xiao J, Huang DW. Proteomics and ultrastructural analysis of Hermetia illucens (Diptera: Stratiomyidae) larval peritrophic matrix. Proteome Sci 2021; 19:7. [PMID: 33836751 PMCID: PMC8035744 DOI: 10.1186/s12953-021-00175-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Accepted: 04/03/2021] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND The black soldier fly (Hermetia illucens) has significant economic potential. The larvae can be used in financially viable waste management systems, as they are voracious feeders able to efficiently convert low-quality waste into valuable biomass. However, most studies on H. illucens in recent decades have focused on optimizing their breeding and bioconversion conditions, while information on their biology is limited. METHODS About 200 fifth instar well-fed larvae were sacrificed in this work. The liquid chromatography-tandem mass spectrometry and scanning electron microscopy were employed in this study to perform a proteomic and ultrastructural analysis of the peritrophic matrix (PM) of H. illucens larvae. RESULTS A total of 565 proteins were identified in the PM samples of H. illucen, of which 177 proteins were predicted to contain signal peptides, bioinformatics analysis and manual curation determined 88 proteins may be associated with the PM, with functions in digestion, immunity, PM modulation, and others. The ultrastructure of the H. illucens larval PM observed by scanning electron microscopy shows a unique diamond-shaped chitin grid texture. CONCLUSIONS It is the first and most comprehensive proteomics research about the PM of H. illucens larvae to date. All the proteins identified in this work has been discussed in details, except several unnamed or uncharacterized proteins, which should not be ignored and need further study. A comparison of the ultrastructure between H. illucens larval PM and those of other insects as observed by SEM indicates that the PM displays diverse textures on an ultra-micro scale and we suscept a unique diamond-shaped chitin grid texture may help H. illucens larval to hold more food. This work deepens our understanding of the molecular architecture and ultrastructure of the H. illucens larval PM.
Collapse
Affiliation(s)
- Yu-Bo Lin
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jing-Jing Rong
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xun-Fan Wei
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Zhuo-Xiao Sui
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Jinhua Xiao
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Da-Wei Huang
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin, 300071, China.
| |
Collapse
|
7
|
Bowden TJ, Kraev I, Lange S. Extracellular vesicles and post-translational protein deimination signatures in haemolymph of the American lobster (Homarus americanus). FISH & SHELLFISH IMMUNOLOGY 2020; 106:79-102. [PMID: 32731012 DOI: 10.1016/j.fsi.2020.06.053] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 06/21/2020] [Accepted: 06/27/2020] [Indexed: 06/11/2023]
Abstract
The American lobster (Homarus americanus) is a commercially important crustacean with an unusual long life span up to 100 years and a comparative animal model of longevity. Therefore, research into its immune system and physiology is of considerable importance both for industry and comparative immunology studies. Peptidylarginine deiminases (PADs) are a phylogenetically conserved enzyme family that catalyses post-translational protein deimination via the conversion of arginine to citrulline. This can lead to structural and functional protein changes, sometimes contributing to protein moonlighting, in health and disease. PADs also regulate the cellular release of extracellular vesicles (EVs), which is an important part of cellular communication, both in normal physiology and in immune responses. Hitherto, studies on EVs in Crustacea are limited and neither PADs nor associated protein deimination have been studied in a Crustacean species. The current study assessed EV and deimination signatures in haemolymph of the American lobster. Lobster EVs were found to be a poly-dispersed population in the 10-500 nm size range, with the majority of smaller EVs, which fell within 22-115 nm. In lobster haemolymph, 9 key immune and metabolic proteins were identified to be post-translationally deiminated, while further 41 deiminated protein hits were identified when searching against a Crustacean database. KEGG (Kyoto encyclopedia of genes and genomes) and GO (gene ontology) enrichment analysis of these deiminated proteins revealed KEGG and GO pathways relating to a number of immune, including anti-pathogenic (viral, bacterial, fungal) and host-pathogen interactions, as well as metabolic pathways, regulation of vesicle and exosome release, mitochondrial function, ATP generation, gene regulation, telomerase homeostasis and developmental processes. The characterisation of EVs, and post-translational deimination signatures, reported in lobster in the current study, and the first time in Crustacea, provides insights into protein moonlighting functions of both species-specific and phylogenetically conserved proteins and EV-mediated communication in this long-lived crustacean. The current study furthermore lays foundation for novel biomarker discovery for lobster aquaculture.
Collapse
Affiliation(s)
- Timothy J Bowden
- Aquaculture Research Institute, School of Food & Agriculture, University of Maine, Orono, ME, USA.
| | - Igor Kraev
- Electron Microscopy Suite, Faculty of Science,Technology, Engineering and Mathematics, Open University, Milton Keynes, MK7 6AA, UK.
| | - Sigrun Lange
- Tissue Architecture and Regeneration Research Group, School of Life Sciences, University of Westminster, London, W1W 6UW, UK.
| |
Collapse
|
8
|
Du L, Wang M, Li J, He S, Huang J, Wu J. Characterization of a Vitellogenin Receptor in the Bumblebee, Bombus lantschouensis (Hymenoptera, Apidae). INSECTS 2019; 10:E445. [PMID: 31842304 PMCID: PMC6955983 DOI: 10.3390/insects10120445] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 12/09/2019] [Accepted: 12/10/2019] [Indexed: 11/16/2022]
Abstract
The vitellogenin receptor (VgR) belongs to the low-density lipoprotein receptor (LDLR) family, responsible for mediating the endocytosis of vitellogenin (Vg) into the ovaries to promote ovarian growth and oviposition. Here, we cloned and measured VgR gene expression characteristics in the bumblebee Bombus lantschouensis. RNA interference was used to validate VgR function. The results showed that the full length of the BLVgR cDNA was 5519 bp, which included a 5280 bp open reading frame encoding 1759 amino acids (AAs). Sequence alignment revealed that the protein contained 12 LDLa, 5 EGF, 2 EGF-CA and 10 LY domains. Phylogenetic analysis showed that BLVgR and the VgR of Bombus terrestris clustered together and the tree of bumblebees (Bombus) appeared as one clade next to honeybees (Apis). Transcript expression analysis showed that BLVgR was expressed in all tested tissues and showed the highest abundance in the ovaries. BLVgR expression was present in all developmental stages. However, the expression level in larvae was extremely low. In addition, the expression of BLVgR was significantly upregulated after egg laying in both workers and queens. In new emerging workers injected with 5 µg of VgR dsRNA, the expression level of BLVgR was 4-fold lower than that in the GFP dsRNA-injected group after 72 h. Furthermore, BLVgR silencing significantly reduced the number of eggs laid (3.67 ± 1.96 eggs) and delayed the first egg-laying time (16.31 ± 2.07 days) in worker microcolonies when compared to dsGFP (37.31 ± 4.09 eggs, 8.15 ± 0.22 days) and DEPC-treated water injected controls (16.42 ± 2.24 eggs, 10.00 ± 0.37 days). In conclusion, the BLVgR gene and its reproductive function were explored in the bumblebee B. lantschouensis. This gene plays an important role in egg laying time and egg number.
Collapse
Affiliation(s)
- Lin Du
- College of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China; (L.D.); (S.H.)
- Key Laboratory for Insect-Pollinator Biology of the Ministry of Agriculture and Rural Affairs, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100093, China;
| | - Mingming Wang
- Nanchuan Bureau of Animal Husbandry and Veterinary, Chongqing 408400, China;
| | - Jilian Li
- Key Laboratory for Insect-Pollinator Biology of the Ministry of Agriculture and Rural Affairs, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100093, China;
| | - Shaoyu He
- College of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China; (L.D.); (S.H.)
| | - Jiaxing Huang
- Key Laboratory for Insect-Pollinator Biology of the Ministry of Agriculture and Rural Affairs, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100093, China;
| | - Jie Wu
- Key Laboratory for Insect-Pollinator Biology of the Ministry of Agriculture and Rural Affairs, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100093, China;
| |
Collapse
|