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  1. Article: Hydrogen sulfide treatment retrieves the inhibition of growth and development characteristics in silkworm (Bombyx mori) via phosphoacetyl glucosamine mutase gene knock down

    Zhang, Rui / Du, Juan / Cao, Yu‐Yao / Thakur, Kiran / Tang, Shun‐Ming / Hu, Fei / Wei, Zhao‐Jun

    Archives of insect biochemistry and physiology. 2022 May, v. 110, no. 1

    2022  

    Abstract: Phosphoacetyl glucosamine mutase (PGM) is the key gene for glycolysis of important metabolic pathways in silkworm, and H₂S (7.5 μM) can promote the growth and development of silkworm. Herein, we used body cavity injection of small‐interfering RNA (siRNA) ...

    Abstract Phosphoacetyl glucosamine mutase (PGM) is the key gene for glycolysis of important metabolic pathways in silkworm, and H₂S (7.5 μM) can promote the growth and development of silkworm. Herein, we used body cavity injection of small‐interfering RNA (siRNA) to interfere with the PGM gene in H₂S‐treated silkworms. After RNA interference (RNAi), we investigated the growth and development of the silkworm. H₂S treatment could significantly recover the inhibition of body weight, cocoon weight, cocoon shell weight, and cocoon shell ratio by knocking down PGM gene in silkworm, without significant effects on eggs laying and production, and then analyzed the mRNA expression of PGM gene. The interference of siRNA significantly decreased the expression of targeted PGM gene and was concentrated in 48 h followed by gradual recovery. Three interference fragments also showed different interference effects, and siRNA of PGM‐3 exerted the highest interference effect to the target gene expression. Fat body had the highest mRNA expression of PGM gene, and the best interference effect was observed after siRNA injection. The results showed that the gene based on H₂S treatment may have an important impact on the growth and development of silkworm by affecting its metabolic pathway.
    Keywords Bombyx mori ; RNA interference ; biochemical pathways ; body weight ; fat body ; gene expression ; gene targeting ; genes ; glucosamine ; glycolysis ; growth and development ; hydrogen sulfide ; insect biochemistry ; silkworms
    Language English
    Dates of publication 2022-05
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note JOURNAL ARTICLE
    ZDB-ID 11323-2
    ISSN 1520-6327 ; 0739-4462
    ISSN (online) 1520-6327
    ISSN 0739-4462
    DOI 10.1002/arch.21873
    Database NAL-Catalogue (AGRICOLA)

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  2. Article ; Online: Cordyceps cicadae polysaccharides inhibit human cervical cancer hela cells proliferation via apoptosis and cell cycle arrest.

    Xu, Jiao / Tan, Zhi-Cheng / Shen, Zhong-Yuan / Shen, Xing-Jia / Tang, Shun-Ming

    Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association

    2021  Volume 148, Page(s) 111971

    Abstract: The present study presented the extraction and purification of polysaccharides from artificially cultured Cordyceps cicadae and wild Cordyceps cicadae by pre-soaking ultrasonic water extraction. The effects of different concentrations of polysaccharides ... ...

    Abstract The present study presented the extraction and purification of polysaccharides from artificially cultured Cordyceps cicadae and wild Cordyceps cicadae by pre-soaking ultrasonic water extraction. The effects of different concentrations of polysaccharides on proliferation and cytotoxicity of Hela cells were detected by MTT and LDH methods. The results showed that the proliferation of Hela cells was inhibited by polysaccharides treatment (25 μg/mL-1600 μg/mL). The results of flow cytometry further confirmed that polysaccharides blocked the cell cycle in the S phase and promoted apoptosis. RT-qPCR and Western Blot were used to study the mRNA and protein expression of genes related to cell cycle and apoptosis signaling pathway. The results showed that polysaccharides treatment inhibited the expression of Cyclin E, Cyclin A and CDK2 and up regulated the expression of P53. Further, activation of Caspase cascade reaction, up regulation of death receptor, and the ratio of pro-apoptotic factor/anti-apoptotic factors, thus caused the cell cycle arrest and induced the apoptosis. The above research results lay a foundation for extending the anti-cancer effects of natural plant resources with low toxicity and high efficiency.
    MeSH term(s) Antineoplastic Agents/isolation & purification ; Antineoplastic Agents/pharmacology ; Apoptosis/drug effects ; Cell Proliferation/drug effects ; Cordyceps/chemistry ; Drug Screening Assays, Antitumor ; Gene Expression Regulation, Neoplastic/drug effects ; HeLa Cells ; Humans ; Mitochondria/metabolism ; Polysaccharides/isolation & purification ; Polysaccharides/pharmacology ; S Phase Cell Cycle Checkpoints/drug effects
    Chemical Substances Antineoplastic Agents ; Polysaccharides
    Language English
    Publishing date 2021-01-06
    Publishing country England
    Document type Journal Article
    ZDB-ID 782617-5
    ISSN 1873-6351 ; 0278-6915
    ISSN (online) 1873-6351
    ISSN 0278-6915
    DOI 10.1016/j.fct.2021.111971
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  3. Article ; Online: A 14-amino acids deletion in BmShadow results to non-moult on the 2nd instar in the bivoltine silkworm, Bombyx mori.

    Zhu, Juan / Chen, Yan-Rong / Geng, Tao / Tang, Shun-Ming / Zhao, Qiao-Ling / Shen, Xing-Jia

    Gene

    2021  Volume 777, Page(s) 145450

    Abstract: The Bombyx mori Shadow gene (BmShadow) belongs to the superfamily of cytochrome P450 genes. To elucidate the function of the BmShadow gene and its association with diapause, we employed the CRISPR/Cas9 system to knock out the BmShadow gene in the ... ...

    Abstract The Bombyx mori Shadow gene (BmShadow) belongs to the superfamily of cytochrome P450 genes. To elucidate the function of the BmShadow gene and its association with diapause, we employed the CRISPR/Cas9 system to knock out the BmShadow gene in the bivoltine strain Qiufeng. The mutant (BmShadow
    MeSH term(s) Amino Acids/metabolism ; Animals ; Bombyx/genetics ; Cytochrome P-450 Enzyme System/genetics ; Cytochrome P-450 Enzyme System/metabolism ; Drosophila Proteins/genetics ; Drosophila Proteins/metabolism ; Ecdysterone/genetics ; Ecdysterone/metabolism ; Insect Proteins/genetics ; Larva/genetics ; Molting/genetics
    Chemical Substances Amino Acids ; Drosophila Proteins ; Insect Proteins ; Ecdysterone (5289-74-7) ; Cytochrome P-450 Enzyme System (9035-51-2) ; sad protein, Drosophila (EC 1.13.-)
    Language English
    Publishing date 2021-01-29
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 391792-7
    ISSN 1879-0038 ; 0378-1119
    ISSN (online) 1879-0038
    ISSN 0378-1119
    DOI 10.1016/j.gene.2021.145450
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  4. Article: Transcriptome Analysis Reveals the Gene Expression Changes in the Silkworm (Bombyx mori) in Response to Hydrogen Sulfide Exposure

    Zhang, Rui / Cao, Yu-Yao / Du, Juan / Thakur, Kiran / Tang, Shun-Ming / Hu, Fei / Wei, Zhao-Jun

    Insects. 2021 Dec. 13, v. 12, no. 12

    2021  

    Abstract: Hydrogen sulfide (H₂S) has been recognized for its beneficial influence on physiological alterations. The development (body weight) and economic characteristics (cocoon weight, cocoon shell ratio, and cocoon shell weight) of silkworms were increased ... ...

    Abstract Hydrogen sulfide (H₂S) has been recognized for its beneficial influence on physiological alterations. The development (body weight) and economic characteristics (cocoon weight, cocoon shell ratio, and cocoon shell weight) of silkworms were increased after continuous 7.5 µM H₂S treatment. In the present study, gene expression changes in the fat body of silkworms at the 5th instar larvae in response to the H₂S were investigated through comparative transcriptome analysis. Moreover, the expression pattern of significant differentially expressed genes (DEGs) at the 5th instar larvae was confirmed by quantitative real-time PCR (qRT-PCR) after H₂S exposure. A total of 1200 (DEGs) was identified, of which 977 DEGs were up-regulated and 223 DEGs were down-regulated. Most of the DEGs were involved in the transport pathway, cellular community, carbohydrate metabolism, and immune-associated signal transduction. The up regulated genes under H₂S exposure were involved in endocytosis, glycolysis/gluconeogenesis, the citrate cycle (TCA cycle), and the synthesis of fibroin, while genes related to inflammation were down-regulated, indicating that H₂S could promote energy metabolism, the transport pathway, silk synthesis, and inhibit inflammation in the silkworm. In addition, the expression levels of these genes were increased or decreased in a time-dependent manner during the 5th instar larvae. These results provided insight into the effects of H₂S on silkworms at the transcriptional level and a substantial foundation for understanding H₂S function.
    Keywords Bombyx mori ; body weight ; endocytosis ; energy metabolism ; fat body ; fibroins ; gene expression ; gene expression regulation ; gluconeogenesis ; glycolysis ; hydrogen sulfide ; inflammation ; instars ; quantitative polymerase chain reaction ; signal transduction ; silk ; silkworms ; transcriptomics ; tricarboxylic acid cycle
    Language English
    Dates of publication 2021-1213
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2662247-6
    ISSN 2075-4450
    ISSN 2075-4450
    DOI 10.3390/insects12121110
    Database NAL-Catalogue (AGRICOLA)

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  5. Article: A 14-amino acids deletion in BmShadow results to non-moult on the 2nd instar in the bivoltine silkworm, Bombyx mori

    Zhu, Juan / Chen, Yan-Rong / Geng, Tao / Tang, Shun-Ming / Zhao, Qiao-ling / Shen, Xing-Jia

    Gene. 2021 Apr. 20, v. 777

    2021  

    Abstract: The Bombyx mori Shadow gene (BmShadow) belongs to the superfamily of cytochrome P450 genes. To elucidate the function of the BmShadow gene and its association with diapause, we employed the CRISPR/Cas9 system to knock out the BmShadow gene in the ... ...

    Abstract The Bombyx mori Shadow gene (BmShadow) belongs to the superfamily of cytochrome P450 genes. To elucidate the function of the BmShadow gene and its association with diapause, we employed the CRISPR/Cas9 system to knock out the BmShadow gene in the bivoltine strain Qiufeng. The mutant (BmShadow⁻/⁻) was obtained in G₂, exhibiting a 42-base deletion corresponded exactly to the amino acids regions from positions 155 to 168. The larvae of BmShadow⁻/⁻ cannot moult at the pre-moulting stage of the 2nd instar. When the BmShadow⁻/⁻ larvae were fed with 20E analogue at the late stage of the 2nd instar, they were rescued and developed into the 3rd instar. Rescue experiments indicated that the 20E concentration of BmShadow⁻/⁻ larvae was significantly lower than that in WT larvae, and the 20E concentration of BmShadow⁻/⁻ larvae which fed 20E analogue was restored to normal levels. Interestingly, the BmShadow⁻/⁻ larvae could not moult on the 1st instar when they hatched from eggs after being stored at 5 °C for 40 days or after hibernation, suggesting that the 20E transported from the mother was partially consumed in the diapause maintenance phase. Our study confirmed that BmShadow is involved in 20E synthesis and a 14-amino acids region from position 155 to 168 was essential for its function, also there appears to be no other compensation pathway in vivo, which offered an important potential target locus for the control of silkworm development and the biological control of agricultural and forestry pests.
    Keywords Bombyx mori ; CRISPR-Cas systems ; biological control ; cytochrome P-450 ; diapause ; forestry ; genes ; hibernation ; instars ; loci ; molting ; mutants ; silkworms
    Language English
    Dates of publication 2021-0420
    Publishing place Elsevier B.V.
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 391792-7
    ISSN 1879-0038 ; 0378-1119
    ISSN (online) 1879-0038
    ISSN 0378-1119
    DOI 10.1016/j.gene.2021.145450
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  6. Article ; Online: Hydrogen sulfide treatment retrieves the inhibition of growth and development characteristics in silkworm (Bombyx mori) via phosphoacetyl glucosamine mutase gene knock down.

    Zhang, Rui / Du, Juan / Cao, Yu-Yao / Thakur, Kiran / Tang, Shun-Ming / Hu, Fei / Wei, Zhao-Jun

    Archives of insect biochemistry and physiology

    2022  Volume 110, Issue 1, Page(s) e21873

    Abstract: Phosphoacetyl glucosamine mutase (PGM) is the key gene for glycolysis of important metabolic pathways in silkworm, and ... ...

    Abstract Phosphoacetyl glucosamine mutase (PGM) is the key gene for glycolysis of important metabolic pathways in silkworm, and H
    MeSH term(s) Animals ; Bombyx/metabolism ; Gene Knockdown Techniques ; Glucosamine/metabolism ; Glucosamine/pharmacology ; Growth and Development ; Hydrogen Sulfide/metabolism ; Hydrogen Sulfide/pharmacology ; RNA, Messenger/metabolism ; RNA, Small Interfering/metabolism
    Chemical Substances RNA, Messenger ; RNA, Small Interfering ; Glucosamine (N08U5BOQ1K) ; Hydrogen Sulfide (YY9FVM7NSN)
    Language English
    Publishing date 2022-02-02
    Publishing country United States
    Document type Journal Article
    ZDB-ID 11323-2
    ISSN 1520-6327 ; 0739-4462
    ISSN (online) 1520-6327
    ISSN 0739-4462
    DOI 10.1002/arch.21873
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  7. Article ; Online: Exorista sorbillans (Diptera: Tachinidae) parasitism shortens host larvae growth duration by regulating ecdysone and juvenile hormone titers in Bombyx mori (Lepidoptera: Bombycidae).

    Wang, Shan-Shan / Wang, Lei-Lei / Pu, Yue-Xia / Liu, Ji-Yin / Wang, Mei-Xian / Zhu, Juan / Shen, Zhong-Yuan / Shen, Xing-Jia / Tang, Shun-Ming

    Journal of insect science (Online)

    2023  Volume 23, Issue 3

    Abstract: The tachinid fly, Exorista sorbillans, is a notorious ovolarviparous endoparasitoid of the silkworm, Bombyx mori, causing severe damage to silkworm cocoon industry. Silkworm larvae show typically precocious wandering behavior after being parasitized by E. ...

    Abstract The tachinid fly, Exorista sorbillans, is a notorious ovolarviparous endoparasitoid of the silkworm, Bombyx mori, causing severe damage to silkworm cocoon industry. Silkworm larvae show typically precocious wandering behavior after being parasitized by E. sorbillans; however, the underlying molecular mechanism remains unexplored. Herein, we investigated the changes in the levels of 20-hydroxyecdysone (20E) and juvenile hormone (JH) titer, and they both increased in the hemolymph of parasitized silkworms. Furthermore, we verified the expression patterns of related genes, which showed an upregulation of 20E signaling and biosynthesis genes but a significant downregulation of ecdysone oxidase (EO), a 20E inactivation enzyme, in parasitized silkworms. In addition, related genes of the JH signaling were activated in parasitized silkworms, while related genes of the JH degradation pathway were suppressed, resulting in an increase in JH titer. Notably, the precocious wandering behavior of parasitized silkworms was partly recoverable by silencing the transcriptions of BmCYP302A1 or BmCYP307A1 genes. Our findings suggest that the developmental duration of silkworm post parasitism could be shortened by regulation of 20E and JH titers, which may help silkworm to resist the E. sorbillans infestation. These findings provide a basis for deeper insight into the interplay between silkworms and E. sorbillans and may serve as a reference for the development of a novel approach to control silkworm myiasis.
    MeSH term(s) Animals ; Bombyx ; Diptera/metabolism ; Larva ; Ecdysone/metabolism ; Lepidoptera/metabolism ; Juvenile Hormones/metabolism ; Manduca
    Chemical Substances Ecdysone (3604-87-3) ; Juvenile Hormones
    Language English
    Publishing date 2023-06-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2049098-7
    ISSN 1536-2442 ; 1536-2442
    ISSN (online) 1536-2442
    ISSN 1536-2442
    DOI 10.1093/jisesa/iead034
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  8. Article: Transcriptome analysis reveals gene expression changes of the fat body of silkworm (Bombyx mori L.) in response to selenium treatment

    Jiang, Li / Cao, Yu-Yao / Hu, Fei / Peng, Li-Li / Tang, Shun-Ming / Thakur, Kiran / Wei, Zhao-Jun

    Chemosphere. 2020 Apr., v. 245

    2020  

    Abstract: A comparative transcriptome analysis was conducted to investigate the gene expression changes in the fat body of silkworm after treatment with different concentrations (50 μM and 200 μM) of selenium (Se). 912 differential expression genes (DEGs) (371 up- ... ...

    Abstract A comparative transcriptome analysis was conducted to investigate the gene expression changes in the fat body of silkworm after treatment with different concentrations (50 μM and 200 μM) of selenium (Se). 912 differential expression genes (DEGs) (371 up-regulated and 541 down-regulated) and 1420 DEGs (1078 up-regulated and 342 down-regulated) were identified in silkworm fat body treated with 50 μM and 200 μM of Se, respectively. In case of 50 μM group, DEGs were mainly enriched in the peroxisome pathway and fatty acid metabolism pathway, and later were associated with antioxidant defense and nutrition regulation. After 200 μM Se-treatment, DEGs were mainly located in the glycerolipid metabolism and arachidonic acid metabolism pathways, which further encoded detoxification related genes. Furthermore, 32 candidate DEGs from these pathways had been selected to confirm the RNA-seq data. Among these DEGs, 14 genes were up-regulated in the 50 μM Se-treated group (only three genes in the 200 μM Se-treated group) which were involved in lipid metabolism and antioxidant defense, and 13 up-regulated genes (only two genes were up-regulated in the 50 μM Se-treated group) were involved in detoxification of the 200 μM Se-treated group. These changes showed that lower concentration of Se could regulate the nutrition and promote antioxidation pathways; whereas, high levels of Se promoted the detoxification of silkworm. These findings can be helpful to understand the possible mechanisms of Se action and detoxification in silkworm and other insects.
    Keywords antioxidant activity ; arachidonic acid ; Bombyx mori ; fat body ; fatty acid metabolism ; gene expression ; gene expression regulation ; genes ; nutrition ; selenium ; sequence analysis ; silkworms ; transcriptomics
    Language English
    Dates of publication 2020-04
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 120089-6
    ISSN 1879-1298 ; 0045-6535 ; 0366-7111
    ISSN (online) 1879-1298
    ISSN 0045-6535 ; 0366-7111
    DOI 10.1016/j.chemosphere.2019.125660
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  9. Article ; Online: Bombyx mori miR-2845 represses the expression of fibroin light chain gene both in vitro and in vivo.

    Huang, JingYi / Chen, YanHua / Zhu, Juan / Wang, MeiXian / Tang, ShunMing / Yi, YongZhu / Shen, XingJia

    PloS one

    2021  Volume 16, Issue 12, Page(s) e0261391

    Abstract: To study the regulatory function of Bombyx mori (B. mori) miRNAs (bmo-miR) on the expression of fibroin light chain gene (BmFib-L), the 3'UTR of BmFib-L mRNA was used as the target for online prediction of miRNAs from miRBase using RNAhybrid Software, ... ...

    Abstract To study the regulatory function of Bombyx mori (B. mori) miRNAs (bmo-miR) on the expression of fibroin light chain gene (BmFib-L), the 3'UTR of BmFib-L mRNA was used as the target for online prediction of miRNAs from miRBase using RNAhybrid Software, and miR-2845 was screened out. First, the expression profiles of miR-2845 and BmFib-L in larvae of the 5th instar were analyzed by Real-time quantitative PCR (RT-qPCR). Then recombinant plasmids (pcDNA3.0-pre-miR-2845 and pGL3.0-BmFib-L) were constructed to use for the expression of miR-2845 and BmFib-L 3'UTR, respectively. Cellular-level functional verification of miR-2845 on BmFib-L was carried out using multiple experimental methods (including dual luciferase reporter vectors, artificially synthesized mimics and inhibitors, and target site mutations). Finally, in vivo functional verification was performed by injecting the recombinant vector in 5th instar larvae. BmFib-L expression levels were detected using RT-qPCR in the posterior silk glands (PSG) of the injected larvae. Results showed that the expression of miR-2845 increased between the 1st and 5th day in 5th instar larvae, but began to decline on the 5th day, while the expression of the target gene BmFib-L increased sharply. This suggests that miR-2845 and BmFib-L expression levels show opposing trends, implying a negative regulatory relationship. In BmN cells, miR-2845 significantly down-regulated the expression of BmFib-L; the inhibitory effect of miR-2845 on BmFib-L was disappeared after mutation of the targeting site on 3'UTR of BmFib-L; in individuals, miR-2845 significantly down-regulated BmFib-L expression levels. Our results provide new experimental data for clarifying the molecular regulation mechanism of silk protein expression.
    MeSH term(s) 3' Untranslated Regions ; Animals ; Bombyx/genetics ; China ; Computational Biology/methods ; Fibroins/genetics ; Fibroins/metabolism ; Gene Expression/genetics ; Gene Expression Regulation/genetics ; Insect Proteins/genetics ; Insect Proteins/metabolism ; Larva/genetics ; MicroRNAs/genetics ; Transcription Factors/metabolism
    Chemical Substances 3' Untranslated Regions ; Insect Proteins ; L-chain, fibroin protein, insect ; MicroRNAs ; Transcription Factors ; fibroin, silkworm ; Fibroins (9007-76-5)
    Language English
    Publishing date 2021-12-16
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0261391
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  10. Article: Transcriptome Analysis Reveals the Gene Expression Changes in the Silkworm (

    Zhang, Rui / Cao, Yu-Yao / Du, Juan / Thakur, Kiran / Tang, Shun-Ming / Hu, Fei / Wei, Zhao-Jun

    Insects

    2021  Volume 12, Issue 12

    Abstract: Hydrogen sulfide ( ... ...

    Abstract Hydrogen sulfide (H
    Language English
    Publishing date 2021-12-13
    Publishing country Switzerland
    Document type Journal Article
    ISSN 2075-4450
    ISSN 2075-4450
    DOI 10.3390/insects12121110
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