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Farrus N, Maestro JL, Piulachs MD. CHMP4B contributes to maintaining the follicular cells integrity in the panoistic ovary of the cockroach Blattella germanica. Biol Cell 2024:e00010. [PMID: 38895958 DOI: 10.1111/boc.202400010] [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: 01/24/2024] [Revised: 04/27/2024] [Accepted: 05/28/2024] [Indexed: 06/21/2024]
Abstract
BACKGROUND The Endosomal Sorting Complex Required for Transport (ESCRT) is a highly conserved cellular machinery essential for many cellular functions, including transmembrane protein sorting, endosomal trafficking, and membrane scission. CHMP4B is a key component of ESCRT-III subcomplex and has been thoroughly studied in the meroistic ovaries of Drosophila melanogaster showing its relevance in maintaining this reproductive organ during the life of the fly. However, the role of the CHMP4B in the most basal panoistic ovaries remains elusive. RESULTS Using RNAi, we examined the function of CHMP4B in the ovary of Blattella germanica in two different physiological stages: in last instar nymphs, with proliferative follicular cells, and in vitellogenic adults when follicular cells enter in polyploidy and endoreplication. In Chmp4b-depleted specimens, the actin fibers change their distribution, appearing accumulated in the basal pole of the follicular cells, resulting in an excess of actin bundles that surround the basal ovarian follicle and modifying their shape. Depletion of Chmp4b also determines an actin accumulation in follicular cell membranes, resulting in different cell morphologies and sizes. In the end, these changes disrupt the opening of intercellular spaces between the follicular cells (patency) impeding the incorporation of yolk proteins to the growing oocyte and resulting in female sterility. In addition, the nuclei of follicular cells appeared unusually elongated, suggesting an incomplete karyokinesis. CONCLUSIONS These results proved CHMP4B essential in preserving the proper expression of cytoskeleton proteins vital for basal ovarian follicle growth and maturation and for yolk protein incorporation. Moreover, the correct distribution of actin fibers in the basal ovarian follicle emerged as a critical factor for the successful completion of ovulation and oviposition. SIGNIFICANCE The overall results, obtained in two different proliferative stages, suggest that the requirement of CHMP4B in B. germanica follicular epithelium is not related to the proliferative stage of the tissue.
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Affiliation(s)
- Nuria Farrus
- Institut de Biologia Evolutiva (CSIC- Universitat Pompeu Fabra), Barcelona, Spain
| | - José Luis Maestro
- Institut de Biologia Evolutiva (CSIC- Universitat Pompeu Fabra), Barcelona, Spain
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Xie Y, Tan Y, Wen X, Deng W, Yu J, Li M, Meng F, Wang X, Zhu D. The Expression and Function of Notch Involved in Ovarian Development and Fecundity in Basilepta melanopus. INSECTS 2024; 15:292. [PMID: 38667422 PMCID: PMC11050577 DOI: 10.3390/insects15040292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 04/10/2024] [Accepted: 04/17/2024] [Indexed: 04/28/2024]
Abstract
Basilepta melanopus is a pest that severely affects oil tea plants, and the Notch signaling pathway plays a significant role in the early development of insect ovaries. In this study, we explored the function of the notch gene within the Notch signaling pathway in the reproductive system of B. melanopus. The functional domains and expression patterns of Bmnotch were analyzed. Bmnotch contains 45 epidermal growth factor-like (EGF-like) domains, one negative regulatory region, one NODP domain and one repeat-containing domain superfamily. The qPCR reveals heightened expression in early developmental stages and specific tissues like the head and ovaries. The RNA interference (RNAi)-based suppression of notch decreased its expression by 52.1%, exhibiting heightened sensitivity to dsNotch at lower concentrations. Phenotypic and mating experiments have demonstrated that dsNotch significantly impairs ovarian development, leading to reduced mating frequencies and egg production. This decline underscores the Notch pathway's crucial role in fecundity. The findings advocate for RNAi-based, Notch-targeted pest control as an effective and sustainable strategy for managing B. melanopus populations, signifying a significant advancement in forest pest control endeavors.
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Affiliation(s)
- Yifei Xie
- Laboratory of Insect Behavior and Evolutionary Ecology, College of Life and Environmental Sciences, Central South University of Forestry and Technology, Changsha 410004, China; (Y.X.); (Y.T.); (F.M.)
- Institute of Forestry and Grassland Protection, Hunan Academy of Forestry, Changsha 410018, China; (W.D.); (J.Y.); (M.L.)
| | - Yifan Tan
- Laboratory of Insect Behavior and Evolutionary Ecology, College of Life and Environmental Sciences, Central South University of Forestry and Technology, Changsha 410004, China; (Y.X.); (Y.T.); (F.M.)
| | - Xuanye Wen
- Center for Biological Disaster Prevention and Control, National Forestry and Grassland Administration, Shenyang 110031, China;
| | - Wan Deng
- Institute of Forestry and Grassland Protection, Hunan Academy of Forestry, Changsha 410018, China; (W.D.); (J.Y.); (M.L.)
| | - Jinxiu Yu
- Institute of Forestry and Grassland Protection, Hunan Academy of Forestry, Changsha 410018, China; (W.D.); (J.Y.); (M.L.)
| | - Mi Li
- Institute of Forestry and Grassland Protection, Hunan Academy of Forestry, Changsha 410018, China; (W.D.); (J.Y.); (M.L.)
| | - Fanhui Meng
- Laboratory of Insect Behavior and Evolutionary Ecology, College of Life and Environmental Sciences, Central South University of Forestry and Technology, Changsha 410004, China; (Y.X.); (Y.T.); (F.M.)
| | - Xiudan Wang
- Laboratory of Insect Behavior and Evolutionary Ecology, College of Life and Environmental Sciences, Central South University of Forestry and Technology, Changsha 410004, China; (Y.X.); (Y.T.); (F.M.)
| | - Daohong Zhu
- Laboratory of Insect Behavior and Evolutionary Ecology, College of Life and Environmental Sciences, Central South University of Forestry and Technology, Changsha 410004, China; (Y.X.); (Y.T.); (F.M.)
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Alborzi Z, Piulachs MD. Dual function of the transcription factor Ftz-f1 on oviposition in the cockroach Blattella germanica. INSECT MOLECULAR BIOLOGY 2023; 32:689-702. [PMID: 37498010 DOI: 10.1111/imb.12866] [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] [Received: 05/08/2023] [Accepted: 07/13/2023] [Indexed: 07/28/2023]
Abstract
The transcription factor Ftz-f1 has multiple functions in insect development in a spatial-temporal line. One of these roles is in the insect ovaries, specifically in the regulation of steroidogenic enzymes production. We studied the function of F in Blattella germanica oogenesis, as it shows two moments of high expression in ovaries: before the imaginal moult, and just before ovulation in the adult. Injecting dsftz-f1 into adult females, either just after the imaginal moult or just prior to choriogenesis, prevented oviposition, with differences between the two approaches. In 3-day-old adult females treated with dsftz-f1 just after the emergence, the expression of ftz-f1 was not modified, but the steroidogenic genes increased their expression. ftz-f1 transcript levels in the ovaries of 5-day-old dsftz-f1-treated females were significantly depleted, and the expression levels of the same steroidogenic genes began to decrease. These results suggest that Ftz-f1 regulates the expression of steroidogenic genes in B. germanica, with phm possibly being a key target. Ftz-f1 has a different temporal function in the cytoskeleton of follicular cells of the basal ovarian follicles. Early in the gonadotrophic cycle, Ftz-f1 promotes the expression of genes related to the cytoskeleton and muscle proteins, while at the end of the cycle it maintains the expression levels of these genes, thus ensuring correct ovulation.
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Affiliation(s)
- Zeynab Alborzi
- Institut de Biologia Evolutiva (CSIC-Universitat Pompeu Fabra), Barcelona, Spain
- Agricultural Entomology, Insect Physiology, Department of Plant Protection, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
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Chen Y, Li H, Yi TC, Shen J, Zhang J. Notch Signaling in Insect Development: A Simple Pathway with Diverse Functions. Int J Mol Sci 2023; 24:14028. [PMID: 37762331 PMCID: PMC10530718 DOI: 10.3390/ijms241814028] [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: 07/31/2023] [Revised: 09/05/2023] [Accepted: 09/06/2023] [Indexed: 09/29/2023] Open
Abstract
Notch signaling is an evolutionarily conserved pathway which functions between adjacent cells to establish their distinct identities. Despite operating in a simple mechanism, Notch signaling plays remarkably diverse roles in development to regulate cell fate determination, organ growth and tissue patterning. While initially discovered and characterized in the model insect Drosophila melanogaster, recent studies across various insect species have revealed the broad involvement of Notch signaling in shaping insect tissues. This review focuses on providing a comprehensive picture regarding the roles of the Notch pathway in insect development. The roles of Notch in the formation and patterning of the insect embryo, wing, leg, ovary and several specific structures, as well as in physiological responses, are summarized. These results are discussed within the developmental context, aiming to deepen our understanding of the diversified functions of the Notch signaling pathway in different insect species.
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Affiliation(s)
- Yao Chen
- Department of Plant Biosecurity and MOA Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing 100193, China; (Y.C.)
| | - Haomiao Li
- Department of Plant Biosecurity and MOA Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing 100193, China; (Y.C.)
| | - Tian-Ci Yi
- Guizhou Provincial Key Laboratory for Agricultural Pest Management of Mountainous Regions, Institute of Entomology, Guizhou University, Guiyang 550025, China
| | - Jie Shen
- Department of Plant Biosecurity and MOA Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing 100193, China; (Y.C.)
| | - Junzheng Zhang
- Department of Plant Biosecurity and MOA Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing 100193, China; (Y.C.)
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Yang X, Liu S, Lu W, Du M, Qiao Z, Liang Z, An Y, Gao J, Li X. Delta and jagged are candidate target genes of RNAi biopesticides for the control of Nilaparvata lugens. Front Bioeng Biotechnol 2022; 10:1023729. [PMID: 36466326 PMCID: PMC9715739 DOI: 10.3389/fbioe.2022.1023729] [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] [Received: 08/20/2022] [Accepted: 11/10/2022] [Indexed: 11/07/2023] Open
Abstract
The brown planthopper (BPH; Nilaparvata lugens) is an important pest in rice cultivation, and chemical pesticide over-use and ineffectiveness of existing Bt transgenic rice against piercing-sucking insects make novel control methods necessary. RNA interference (RNAi) biopesticide is a new type of product with high efficiency and specificity and are simple to use. The Notch signaling pathway has extensive and important physiological functions and plays a key role in the development of insects. In this study, two key ligand genes of the Notch signaling pathway, delta (dl) and jagged (jag), were selected and their lethal effects and functional analysis were systematically evaluated using a stable short-winged population (Brachypterous strain) and a long-winged population (Macropterous strain) of BPHs. The full-length coding sequences of Nldl and Nljag comprised 1,863 and 3,837 base pairs, encoding 620 and 1,278 amino acids, respectively. The nucleic acid sequences of Nldl and Nljag were identical between the two strains. The expression levels of Nldl and Nljag were relatively high in the head of the nymphs, followed by those in the abdomen. Through RNAi treatment, we found that injection of BPH nymphs of both strains with dsNldl (10-50 ng/nymph) or dsNljag (100 ng/nymph) produced lethal or teratogenic effects. dsRNA treatment showed excellent inhibitory effects on the expression of target genes on days 1 and 5, suggesting that RNAi rapidly exhibits effects which persist for long periods of time in BPHs. Taken together, our results confirm the potential of Nldl and Nljag as target genes of RNAi biopesticides, and we propose optimized dosages for the control of BPHs.
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Affiliation(s)
- Xifa Yang
- State Key Laboratory of Wheat and Maize Crop Science/Henan International Laboratory for Green Pest Control/College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Shaokai Liu
- Key Laboratory of Integrated Pest Management on Crops in Northwestern Loess Plateau, Ministry of Agriculture/College of Plant Protection, Northwest A&F University, Yangling, China
| | - Wenhui Lu
- State Key Laboratory of Wheat and Maize Crop Science/Henan International Laboratory for Green Pest Control/College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Mengfang Du
- State Key Laboratory of Wheat and Maize Crop Science/Henan International Laboratory for Green Pest Control/College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Zhuangzhuang Qiao
- State Key Laboratory of Wheat and Maize Crop Science/Henan International Laboratory for Green Pest Control/College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Zhen Liang
- State Key Laboratory of Wheat and Maize Crop Science/Henan International Laboratory for Green Pest Control/College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Yiting An
- State Key Laboratory of Wheat and Maize Crop Science/Henan International Laboratory for Green Pest Control/College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Jing Gao
- State Key Laboratory of Wheat and Maize Crop Science/Henan International Laboratory for Green Pest Control/College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Xiang Li
- State Key Laboratory of Wheat and Maize Crop Science/Henan International Laboratory for Green Pest Control/College of Plant Protection, Henan Agricultural University, Zhengzhou, China
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Knockdown of the Halloween Genes spook, shadow and shade Influences Oocyte Development, Egg Shape, Oviposition and Hatching in the Desert Locust. Int J Mol Sci 2022; 23:ijms23169232. [PMID: 36012497 PMCID: PMC9408901 DOI: 10.3390/ijms23169232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/04/2022] [Accepted: 08/11/2022] [Indexed: 12/02/2022] Open
Abstract
Ecdysteroids are widely investigated for their role during the molting cascade in insects; however, they are also involved in the development of the female reproductive system. Ecdysteroids are synthesized from cholesterol, which is further converted via a series of enzymatic steps into the main molting hormone, 20-hydoxyecdysone. Most of these biosynthetic conversion steps involve the activity of cytochrome P450 (CYP) hydroxylases, which are encoded by the Halloween genes. Three of these genes, spook (spo), phantom (phm) and shade (shd), were previously characterized in the desert locust, Schistocerca gregaria. Based on recent sequencing data, we have now identified the sequences of disembodied (dib) and shadow (sad), for which we also analyzed spatiotemporal expression profiles using qRT-PCR. Furthermore, we investigated the possible role(s) of five different Halloween genes in the oogenesis process by means of RNA interference mediated knockdown experiments. Our results showed that depleting the expression of SchgrSpo, SchgrSad and SchgrShd had a significant impact on oocyte development, oviposition and hatching of the eggs. Moreover, the shape of the growing oocytes, as well as the deposited eggs, was very drastically altered by the experimental treatments. Consequently, it can be proposed that these three enzymes play an important role in oogenesis.
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Zhang F, Chen Y, Shen J, Zhang J. The Ubiquitin Conjugating Enzyme UbcD1 is Required for Notch Signaling Activation During Drosophila Wing Development. Front Genet 2021; 12:770853. [PMID: 34712275 PMCID: PMC8546230 DOI: 10.3389/fgene.2021.770853] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Accepted: 09/30/2021] [Indexed: 11/13/2022] Open
Abstract
Notch signaling pathway plays crucial roles in animal development. Protein ubiquitination contributes to Notch signaling regulation by governing the stability and activity of major signaling components. Studies in Drosophila have identified multiple ubiquitin ligases and deubiquitinating enzymes that modify Notch ligand and receptor proteins. The fate of ubiquitinated substrates depend on topologies of the attached ubiquitin chains, which are determined by the ubiquitin conjugating enzymes (E2 enzymes). However, which E2 enzymes participate in Notch signal transduction remain elusive. Here, we report that the E2 enzyme UbcD1 is required for Notch signaling activation during Drosophila wing development. Mutations of UbcD1 lead to marginal nicks in the adult wing and reduction of Notch signaling targets expression in the wing imaginal disc. Genetic analysis reveal that UbcD1 functions in the signaling receiving cells prior to cleavage of the Notch protein. We provide further evidence suggesting that UbcD1 is likely involved in endocytic trafficking of Notch protein. Our results demonstrate that UbcD1 positively regulates Notch signaling and thus reveal a novel role of UbcD1 in development.
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Affiliation(s)
- Fengchao Zhang
- MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China
| | - Yao Chen
- MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China
| | - Jie Shen
- MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China
| | - Junzheng Zhang
- MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China
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Montañés JC, Rojano C, Ylla G, Piulachs MD, Maestro JL. siRNA enrichment in Argonaute 2-depleted Blattella germanica. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2021; 1864:194704. [PMID: 33895310 DOI: 10.1016/j.bbagrm.2021.194704] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 04/08/2021] [Accepted: 04/09/2021] [Indexed: 12/19/2022]
Abstract
BACKGROUND RNA interference (RNAi) is a cellular mechanism used to fight various threats, including transposons, aberrant RNAs, and some types of viruses. This mechanism relies on the detection of dsRNA molecules, which through a pathway involving Dicer-2 (Dcr-2) and Argonaute 2 (AGO2), produces small interfering RNAs (siRNAs) that bind to the complementary RNAs triggering their degradation. METHODS Using the cockroach Blattella germanica as a model, we examined AGO2 activity by depleting its mRNA using RNAi and analyzing the phenotypes produced. RESULTS Depleting AGO2 expression had no remarkable effect on nymphal development or reproduction. dsRNA treatment triggered an immediate and transitory increase in AGO2 expression, independently of Dcr-2 action. In addition, we analyzed the siRNAs generated after injecting a heterologous dsRNA in control and AGO2-depleted animals. The results revealed that obtained siRNAs mapped non-uniformly along the dsRNA sequence. In AGO2-depleted animals, the proportion of 22 nucleotide reads was higher and accumulations of reads appeared in areas less well-represented in the controls. We also detected a preference for cytosine as the first nucleotide in controls that was significantly attenuated in AGO2-depleted individuals. CONCLUSIONS/GENERAL SIGNIFICANCE The siRNAs produced from a dsRNA mapped heterogeneously along the length of the dsRNA and this arrangement depends on the dsRNA sequence. AGO2 exerts its role as nuclease on the siRNA duplexes independently of its action on the corresponding mRNA. This study sheds light on an extremely useful process for reverse genetics in laboratories, in addition to the design of more effective, specific, and eco-friendly pest-control strategies.
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Affiliation(s)
- José Carlos Montañés
- Institute of Evolutionary Biology (CSIC-Universitat Pompeu Fabra), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Spain
| | - Carlos Rojano
- Institute of Evolutionary Biology (CSIC-Universitat Pompeu Fabra), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Spain
| | - Guillem Ylla
- Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA, USA.
| | - Maria Dolors Piulachs
- Institute of Evolutionary Biology (CSIC-Universitat Pompeu Fabra), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Spain.
| | - José Luis Maestro
- Institute of Evolutionary Biology (CSIC-Universitat Pompeu Fabra), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Spain.
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Hou QL, Chen EH, Xie YF, Dou W, Wang JJ. Ovary-Specific Transcriptome and Essential Role of Nanos in Ovary Development in the Oriental Fruit Fly (Diptera: Tephritidae). JOURNAL OF ECONOMIC ENTOMOLOGY 2021; 114:947-958. [PMID: 33537732 DOI: 10.1093/jee/toab004] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Indexed: 06/12/2023]
Abstract
We used transcriptome analysis to research ovary development in Bactrocera dorsalis (Hendel). The ovary transcriptome of B. dorsalis yielded 66,463,710 clean reads that were assembled into 23,822 unigenes. After aligning to the Nr database in NCBI, 15,473 (64.95%) of the unigenes were matched to identified proteins. As determined by BLAST search, 11,043 (46.36%), 6,102 (25.61%), and 12,603 (52.90%) unigenes were each allocated to clusters via gene ontology, orthologous groups, and SwissProt, respectively. The Kyoto encyclopedia database of genes and genomes (KEGG) was further used to annotate these sequences, and 11,068 unigenes were mapped to 255 known pathways. Afterward, the genes that were possibly involved in oogenesis and ovary development were obtained from the transcriptome data and analyzed. Interestingly, seven ovary-specific genes were identified, including a Nanos gene that is involved in maintaining the primordial germ cells in many insects. Therefore, we further focused on the function of the BdNanos gene, and the gene was injected into B. dorsalis. As expected, the knocking down of Nanos gene expression led to significant inhibition of ovary development, suggesting an important role of this gene in the reproductive process of B. dorsalis. In summary, the present study provides an important reference for identifying the molecular mechanisms of oogenesis and ovary development in B. dorsalis. The BdNanos gene is crucial for ovary development in B. dorsalis and is therefore a potential new pest control target.
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Affiliation(s)
- Qiu-Li Hou
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
| | - Er-Hu Chen
- Collaborative Innovation Center for Modern Grain Circulation and Safety, College of Food Science and Engineering, Nanjing University of Finance and Economics, Nanjing, Jiangsu, China
| | - Yi-Fei Xie
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China
| | - Wei Dou
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China
| | - Jin-Jun Wang
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China
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Leyria J, Orchard I, Lange AB. What happens after a blood meal? A transcriptome analysis of the main tissues involved in egg production in Rhodnius prolixus, an insect vector of Chagas disease. PLoS Negl Trop Dis 2020; 14:e0008516. [PMID: 33057354 PMCID: PMC7591069 DOI: 10.1371/journal.pntd.0008516] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 10/27/2020] [Accepted: 09/23/2020] [Indexed: 12/17/2022] Open
Abstract
The blood-sucking hemipteran Rhodnius prolixus is a vector of Chagas disease, one of the most neglected tropical diseases affecting several million people, mostly in Latin America. The blood meal is an event with a high epidemiological impact since adult mated females feed several times, with each meal resulting in a bout of egg laying, and thereby the production of hundreds of offspring. By means of RNA-Sequencing (RNA-Seq) we have examined how a blood meal influences mRNA expression in the central nervous system (CNS), fat body and ovaries in order to promote egg production, focusing on tissue-specific responses under controlled nutritional conditions. We illustrate the cross talk between reproduction and a) lipids, proteins and trehalose metabolism, b) neuropeptide and neurohormonal signaling, and c) the immune system. Overall, our molecular evaluation confirms and supports previous studies and provides an invaluable molecular resource for future investigations on different tissues involved in successful reproductive events. These analyses serve as a starting point for new investigations, increasing the chances of developing novel strategies for vector population control by translational research, with less impact on the environment and more specificity for a particular organism.
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Affiliation(s)
- Jimena Leyria
- Department of Biology, University of Toronto Mississauga, Mississauga, ON, Canada
| | - Ian Orchard
- Department of Biology, University of Toronto Mississauga, Mississauga, ON, Canada
| | - Angela B. Lange
- Department of Biology, University of Toronto Mississauga, Mississauga, ON, Canada
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Ramos S, Chelemen F, Pagone V, Elshaer N, Irles P, Piulachs MD. Eyes absent in the cockroach panoistic ovaries regulates proliferation and differentiation through ecdysone signalling. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2020; 123:103407. [PMID: 32417417 DOI: 10.1016/j.ibmb.2020.103407] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 04/26/2020] [Accepted: 05/10/2020] [Indexed: 06/11/2023]
Abstract
Eyes absent (Eya), is a protein structurally conserved from hydrozoans to humans, for which two basic roles have been reported: it can act as a transcription cofactor and as a protein tyrosine phosphatase. Eya was discovered in the fly Drosophila melanogaster in relation to its function in eye development, and the same function was later reported in other insects. Eya is also involved in insect oogenesis, although studies in this sense are limited to D. melanogaster, which has meroistic ovaries, and where eya mutations abolish gonad formation. In the present work we studied the function of eya in the panoistic ovary of the cockroach Blattella germanica. We show that eya is essential for correct development of panoistic ovaries. In B. germanica, eya acts at different level and in a distinct way in the germarium and the vitellarium. In the germarium, eya contributes to maintain the correct number of somatic and germinal cells by regulating the expression of steroidogenic genes in the ovary. In the vitellarium, eya facilitates follicle cells proliferation and contributes to regulate the cell program, in the context of basal ovarian follicle maturation. Thus, eya-depleted females of B. germanica arrest the growth and maturation of basal ovarian follicles and become sterile.
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Affiliation(s)
- S Ramos
- Institut de Biologia Evolutiva (CSIC- Universitat Pompeu Fabra), Passeig Maritim de la Barceloneta, 37, 08003, Barcelona, Spain
| | - F Chelemen
- Institut de Biologia Evolutiva (CSIC- Universitat Pompeu Fabra), Passeig Maritim de la Barceloneta, 37, 08003, Barcelona, Spain
| | - V Pagone
- Institut de Biologia Evolutiva (CSIC- Universitat Pompeu Fabra), Passeig Maritim de la Barceloneta, 37, 08003, Barcelona, Spain
| | - N Elshaer
- Institut de Biologia Evolutiva (CSIC- Universitat Pompeu Fabra), Passeig Maritim de la Barceloneta, 37, 08003, Barcelona, Spain; Department of Plant Protection, Faculty of Agriculture, Zagazig University, Egypt
| | - P Irles
- Institut de Biologia Evolutiva (CSIC- Universitat Pompeu Fabra), Passeig Maritim de la Barceloneta, 37, 08003, Barcelona, Spain; Instituto de Ciencias Agronomicas y Veterinarias, Universidad de O'Higgins, Chile
| | - M D Piulachs
- Institut de Biologia Evolutiva (CSIC- Universitat Pompeu Fabra), Passeig Maritim de la Barceloneta, 37, 08003, Barcelona, Spain.
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Song J, Zhou S. Post-transcriptional regulation of insect metamorphosis and oogenesis. Cell Mol Life Sci 2020; 77:1893-1909. [PMID: 31724082 PMCID: PMC11105025 DOI: 10.1007/s00018-019-03361-5] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 10/18/2019] [Accepted: 10/30/2019] [Indexed: 12/17/2022]
Abstract
Metamorphic transformation from larvae to adults along with the high fecundity is key to insect success. Insect metamorphosis and reproduction are governed by two critical endocrines, juvenile hormone (JH), and 20-hydroxyecdysone (20E). Recent studies have established a crucial role of microRNA (miRNA) in insect metamorphosis and oogenesis. While miRNAs target genes involved in JH and 20E-signaling pathways, these two hormones reciprocally regulate miRNA expression, forming regulatory loops of miRNA with JH and 20E-signaling cascades. Insect metamorphosis and oogenesis rely on the coordination of hormones, cognate genes, and miRNAs for precise regulation. In addition, the alternative splicing of genes in JH and 20E-signaling pathways has distinct functions in insect metamorphosis and oogenesis. We, therefore, focus in this review on recent advances in post-transcriptional regulation, with the emphasis on the regulatory role of miRNA and alternative splicing, in insect metamorphosis and oogenesis. We will highlight important new findings of miRNA interactions with hormonal signaling and alternative splicing of JH receptor heterodimer gene Taiman.
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Affiliation(s)
- Jiasheng Song
- Key Laboratory of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, 475004, China
| | - Shutang Zhou
- Key Laboratory of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, 475004, China.
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13
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Gonadal transcriptomic analysis and identification of candidate sex-related genes in Mesocentrotus nudus. Gene 2019; 698:72-81. [DOI: 10.1016/j.gene.2019.02.054] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 02/18/2019] [Accepted: 02/20/2019] [Indexed: 12/14/2022]
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Song J, Li W, Zhao H, Zhou S. Clustered miR-2, miR-13a, miR-13b and miR-71 coordinately target Notch gene to regulate oogenesis of the migratory locust Locusta migratoria. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2019; 106:39-46. [PMID: 30453026 DOI: 10.1016/j.ibmb.2018.11.004] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 11/15/2018] [Accepted: 11/15/2018] [Indexed: 06/09/2023]
Abstract
MicroRNAs (miRNAs), ∼22-nt small noncoding RNAs with a crucial role in various biological processes of organisms, are usually clustered in the genome. However, little is known about the miRNA clusters involved in insect reproduction. By small RNA sequencing and quantification followed by qRT-PCR, we found that the expression of invertebrate-specific miR-2/13/71 cluster including miR-2, miR-13a, miR-13b and miR-71 significantly decreased after adult ecdysis of the migratory locust, Locusta migratoria. Luciferase reporter assay and RNA immunoprecipitation demonstrated that miR-2/13/71 bound to the protein coding sequence of Notch and downregulated its expression. Injection of miR-2/13/71 agomiRs led to significant decrease of Notch expression as well as markedly reduced levels of Vitellogenin mRNA, suppressed oocyte maturation and impaired ovarian growth. Moreover, the expression of miR-2/13/71 was repressed by juvenile hormone (JH). Our results thus point to a previously unidentified mechanism by which JH-repressed miR-2/13/71 coordinately downregulates Notch to modulate insect reproduction. The increase of JH and decrease of miR-2/13/71 expression in both previtellogenic and vitellogenic stages of adult females ensure a high level of Notch expression, critically contributing to JH-dependent vitellogenesis and oogenesis.
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Affiliation(s)
- Jiasheng Song
- Key Laboratory of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, 475004, China
| | - Wanwan Li
- Key Laboratory of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, 475004, China
| | - Haihong Zhao
- Key Laboratory of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, 475004, China
| | - Shutang Zhou
- Key Laboratory of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, 475004, China.
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15
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Lynch JA. Evolution of maternal control of axial patterning in insects. CURRENT OPINION IN INSECT SCIENCE 2019; 31:37-42. [PMID: 31109671 DOI: 10.1016/j.cois.2018.07.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 07/19/2018] [Accepted: 07/19/2018] [Indexed: 06/09/2023]
Abstract
Positional and cell fate cues provided maternally to eggs are important factors in the development of many animals. The insects are a model clade where maternal establishment of embryonic axes is widespread and has been a topic of intense classical and molecular embryological analysis. Recently, significant progress has been made in revealing the molecular basis of some classical embryological experiments. In addition, observations of novel forms of maternal positional cues have been made. Finally, it has become increasingly clear that no maternal source of positional information acts alone without input and feedback from zygotic target genes to ensure precise and repeatable pattern formation in the early embryo. These advances will be discussed in the context of historical experiments, our current understanding of how positional cues can be generated, stored, and transmitted in insect ovaries and eggs, and how the nature of the cues can change in evolution.
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16
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Song HY, Wang Y, Lan H, Zhang YX. Expression of Notch receptors and their ligands in pancreatic ductal adenocarcinoma. Exp Ther Med 2018; 16:53-60. [PMID: 29896227 PMCID: PMC5995048 DOI: 10.3892/etm.2018.6172] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 01/04/2018] [Indexed: 01/06/2023] Open
Abstract
Pancreatic cancer is the fourth leading cause of cancer-associated mortality in developed countries. Pancreatic ductal adenocarcinoma (PDAC) accounts for ~90% of all pancreatic cancer cases. The Notch signaling pathway serves a crucial role in embryonic development, as well as during the tumorigenesis of different types of cancer. However, Notch signaling serves either oncogenic or tumor suppressor roles depending on the tissue type. There are four Notch receptors (Notch1-4) and five ligands [Jagged1, Jagged2, δ-like ligand protein (DLL)1, DLL3 and DLL4]; therefore, it has been suggested that the different Notch receptors serve distinct roles in the same type of tissue. To determine whether this is the case, the present study measured the expression of all Notch receptors and their ligands in PDAC tissue samples and cells. Immunohistochemistry was performed to measure the expression of Notch receptors and their ligands in paraffin-embedded PDAC tissue samples. Immunofluorescence was used to detect the expression of Notch receptors in the pancreatic cancer cell lines human pancreatic adenocarcinoma (HPAC) and PANC-1. In addition, levels of Notch receptors and ligands in HPAC and PANC-1 cells were analyzed by western blot analysis. The results revealed that levels of Notch1 and Notch3 were increased in PDAC tissues, whereas levels of Notch2 and Notch3 were not. The expression of Notch receptors in the pancreatic cancer cell lines HPAC and PANC-1 was consistent with their expression in PDAC tissues. Additionally, levels of the ligands DLL1, DLL3 and DLL4 were increased in HPAC and PANC-1 cells, as well as PDAC tissue samples. However, the expression of Jagged1 and 2 remained low. These results indicate that Notch1, Notch3, DLL1, DLL3 and DLL4 are upregulated in PDAC, a positive correlation was observed between the expression of Notch1 and Notch3, and between Notch1 and the ligands DLL1, DLL3 and DLL4. whereas Notch2, Notch4, Jagged1 and Jagged2 are not. The interaction of Notch1 and Notch3 with Notch ligands DLL1, DLL3 and DLL4 may be important in maintaining the tumor phenotype of pancreatic cancer.
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Affiliation(s)
- Hai-Yan Song
- School of Basic Medical Sciences, Xinxiang Medical University, Henan Collaborative Innovation Center of Molecular Diagnosis and Laboratory Medicine, Xinxiang, Henan 453003, P.R. China.,Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing 100069, P.R. China
| | - Ying Wang
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing 100069, P.R. China
| | - Hong Lan
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing 100069, P.R. China
| | - Yu-Xiang Zhang
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing 100069, P.R. China
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Qiu W, Sun B, He F, Zhang Y. MTA-induced Notch activation enhances the proliferation of human dental pulp cells by inhibiting autophagic flux. Int Endod J 2017; 50 Suppl 2:e52-e62. [DOI: 10.1111/iej.12811] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2016] [Accepted: 06/27/2017] [Indexed: 12/26/2022]
Affiliation(s)
- W. Qiu
- Graduate School at Shenzhen; Tsinghua University; Shenzhen China
- Department of Chemistry; Tsinghua University; Beijing China
- Key Lab in Healthy Science and Technology; Division of Life Science; Graduate School at Shenzhen; Tsinghua University; Shenzhen China
| | - B. Sun
- Graduate School at Shenzhen; Tsinghua University; Shenzhen China
- Key Lab in Healthy Science and Technology; Division of Life Science; Graduate School at Shenzhen; Tsinghua University; Shenzhen China
| | - F. He
- Department of Stomatology; the Second Clinical Medical College; Shenzhen People's Hospital; Jinan University; Shenzhen China
| | - Y. Zhang
- Key Lab in Healthy Science and Technology; Division of Life Science; Graduate School at Shenzhen; Tsinghua University; Shenzhen China
- Open FIESTA Center; Tsinghua University; Shenzhen China
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Marcellini S, González F, Sarrazin AF, Pabón-Mora N, Benítez M, Piñeyro-Nelson A, Rezende GL, Maldonado E, Schneider PN, Grizante MB, Da Fonseca RN, Vergara-Silva F, Suaza-Gaviria V, Zumajo-Cardona C, Zattara EE, Casasa S, Suárez-Baron H, Brown FD. Evolutionary Developmental Biology (Evo-Devo) Research in Latin America. JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION 2016; 328:5-40. [PMID: 27491339 DOI: 10.1002/jez.b.22687] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Revised: 06/16/2016] [Accepted: 06/20/2016] [Indexed: 12/29/2022]
Abstract
Famous for its blind cavefish and Darwin's finches, Latin America is home to some of the richest biodiversity hotspots of our planet. The Latin American fauna and flora inspired and captivated naturalists from the nineteenth and twentieth centuries, including such notable pioneers such as Fritz Müller, Florentino Ameghino, and Léon Croizat who made a significant contribution to the study of embryology and evolutionary thinking. But, what are the historical and present contributions of the Latin American scientific community to Evo-Devo? Here, we provide the first comprehensive overview of the Evo-Devo laboratories based in Latin America and describe current lines of research based on endemic species, focusing on body plans and patterning, systematics, physiology, computational modeling approaches, ecology, and domestication. Literature searches reveal that Evo-Devo in Latin America is still in its early days; while showing encouraging indicators of productivity, it has not stabilized yet, because it relies on few and sparsely distributed laboratories. Coping with the rapid changes in national scientific policies and contributing to solve social and health issues specific to each region are among the main challenges faced by Latin American researchers. The 2015 inaugural meeting of the Pan-American Society for Evolutionary Developmental Biology played a pivotal role in bringing together Latin American researchers eager to initiate and consolidate regional and worldwide collaborative networks. Such networks will undoubtedly advance research on the extremely high genetic and phenotypic biodiversity of Latin America, bound to be an almost infinite source of amazement and fascinating findings for the Evo-Devo community.
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Affiliation(s)
- Sylvain Marcellini
- Laboratorio de Desarrollo y Evolución, Departamento de Biología Celular, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción, Chile
| | - Favio González
- Facultad de Ciencias, Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Andres F Sarrazin
- Instituto de Química, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | | | - Mariana Benítez
- Laboratorio Nacional de Ciencias de la Sostenibilidad, Instituto de Ecología, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Alma Piñeyro-Nelson
- Departamento de Producción Agrícola y Animal, Universidad Autónoma Metropolitana, Xochimilco, Ciudad de México, México
| | - Gustavo L Rezende
- Universidade Estadual do Norte Fluminense, CBB, LQFPP, Campos dos Goytacazes, RJ, Brazil
| | - Ernesto Maldonado
- EvoDevo Lab, Unidad de Sistemas Arrecifales, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Puerto Morelos, Quintana Roo, México
| | | | | | - Rodrigo Nunes Da Fonseca
- Núcleo em Ecologia e Desenvolvimento SócioAmbiental de Macaé (NUPEM), Campus Macaé, Universidade Federal do Rio de Janeiro, Macae, RJ, Brazil
| | | | | | | | | | - Sofia Casasa
- Department of Biology, Indiana University, Bloomington, IN, USA
| | | | - Federico D Brown
- Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, SP, Brazil
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