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Rodrigues JGM, Albuquerque PSV, Nascimento JR, Campos JAV, Godinho ASS, Araújo SJ, Brito JM, Jesus CM, Miranda GS, Rezende MC, Negrão-Corrêa DA, Rocha CQ, Silva LA, Guerra RNM, Nascimento FRF. The immunomodulatory activity of Chenopodium ambrosioides reduces the parasite burden and hepatic granulomatous inflammation in Schistosoma mansoni-infection. J Ethnopharmacol 2021; 264:113287. [PMID: 32858197 DOI: 10.1016/j.jep.2020.113287] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 08/11/2020] [Accepted: 08/12/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Folk medicine reports have described the use of Chenopodium ambrosioides as an anti-inflammatory, analgesic, and anthelmintic herb. These effects, including its activity against intestinal worms, are already scientifically observed. However, the immunological mechanisms of this species in the treatment of Schistosoma mansoni infection are unknown. AIM OF THE STUDY To evaluate the immunological and anti-Schistosoma mansoni effects of a crude Chenopodium ambrosioides hydro-alcoholic extract (HCE). MATERIALS AND METHODS For the in vitro analysis, cercariae and adult worms were exposed to different concentrations (0 to 10,000 μg/mL) of the HCE. For the in vivo evaluation, Swiss mice were infected with 50 cercariae of S. mansoni and separated into groups according to treatment as follows: a negative control (without treatment), a positive control (treated with Praziquantel®), HCE1 Group (treated with HCE during the cutaneous phase), HCE2 Group (treated with HCE during the lung phase), HCE3 Group (treated with HCE during the young worm phase), and HCE4 Group (treated with HCE during the adult worm phase). The animals treated with HCE received daily doses of 50 mg/kg, by gavage, for seven days, corresponding to the different developmental stages of S. mansoni. For comparison, a clean control group (uninfected and untreated) was also included. All animals were euthanized 60 days post-infection to allow the following assessments to be performed: a complete blood cells count, counts of eggs in the feces and liver, the quantification of cytokines and IgE levels, histopathological evaluations of the livers, and the analysis of inflammatory mediators. RESULTS HCE treatment increased the mortality of cercariae and adult worms in vitro. The HCE treatment in vivo reduced the eggs in feces and liver. The number and area of liver granulomas, independent of the phase of treatment, were also reduced. The treatment with HCE reduced the percentage of circulating eosinophils, IgE, IFN-γ, TNF-α, and IL-4. In contrast, the treatment with the HCE, dependent on the phase, increased IL-10 levels and the number of peritoneal and bone marrow cells, mainly of T lymphocytes, B lymphocytes, and macrophages. This effect could be due to secondary compounds presents in this extract, such as kaempferol, quercetin and derivatives. CONCLUSIONS This study demonstrates that Chenopodium ambrosioides has antiparasitic and immunomodulatory activity against the different phases of schistosomiasis, reducing the granulomatous inflammatory profile caused by the infection and, consequently, improving the disease prognosis.
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Affiliation(s)
- João Gustavo Mendes Rodrigues
- Laboratory of Immunophysiology, Centre for Biological and Health Sciences, Federal University of Maranhão, CEP: 65.055-970, São Luís, MA, Brazil.
| | - Paula Sibelly Veras Albuquerque
- Laboratory of Immunophysiology, Centre for Biological and Health Sciences, Federal University of Maranhão, CEP: 65.055-970, São Luís, MA, Brazil.
| | - Johnny R Nascimento
- Laboratory of Immunophysiology, Centre for Biological and Health Sciences, Federal University of Maranhão, CEP: 65.055-970, São Luís, MA, Brazil.
| | - Jaianna Andressa Viana Campos
- Laboratory of Immunophysiology, Centre for Biological and Health Sciences, Federal University of Maranhão, CEP: 65.055-970, São Luís, MA, Brazil.
| | - Andressa S S Godinho
- Laboratory of Immunophysiology, Centre for Biological and Health Sciences, Federal University of Maranhão, CEP: 65.055-970, São Luís, MA, Brazil.
| | - Sulayne Janayna Araújo
- Laboratory of Immunophysiology, Centre for Biological and Health Sciences, Federal University of Maranhão, CEP: 65.055-970, São Luís, MA, Brazil.
| | - Jefferson Mesquita Brito
- Laboratory of Immunophysiology, Centre for Biological and Health Sciences, Federal University of Maranhão, CEP: 65.055-970, São Luís, MA, Brazil.
| | - Caroline M Jesus
- Laboratory of Immunophysiology, Centre for Biological and Health Sciences, Federal University of Maranhão, CEP: 65.055-970, São Luís, MA, Brazil.
| | - Guilherme Silva Miranda
- Laboratory of Immunohelmintology, Department of Parasitology, Institute of Biological Sciences, Federal University of Minas Gerais, CEP: 31.270-901, Belo Horizonte, MG, Brazil; Laboratory of Biology, Department of Education, Federal Institute of Education, CEP: 65.840-000, São Raimundo Das Mangabeiras, MA, Brazil.
| | - Michelle C Rezende
- Laboratory of Immunohelmintology, Department of Parasitology, Institute of Biological Sciences, Federal University of Minas Gerais, CEP: 31.270-901, Belo Horizonte, MG, Brazil.
| | - Deborah Aparecida Negrão-Corrêa
- Laboratory of Immunohelmintology, Department of Parasitology, Institute of Biological Sciences, Federal University of Minas Gerais, CEP: 31.270-901, Belo Horizonte, MG, Brazil.
| | - Cláudia Q Rocha
- Laboratory of Natural Products Chemistry, Department of Chemistry, Federal University of Maranhão, CEP: 65.055-970, São Luís, MA, Brazil.
| | - Lucilene Amorim Silva
- Laboratory of Immunophysiology, Centre for Biological and Health Sciences, Federal University of Maranhão, CEP: 65.055-970, São Luís, MA, Brazil.
| | - Rosane N M Guerra
- Laboratory of Immunophysiology, Centre for Biological and Health Sciences, Federal University of Maranhão, CEP: 65.055-970, São Luís, MA, Brazil.
| | - Flávia R F Nascimento
- Laboratory of Immunophysiology, Centre for Biological and Health Sciences, Federal University of Maranhão, CEP: 65.055-970, São Luís, MA, Brazil.
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Araújo SJ, Nigg EA, Wood RD. Strong functional interactions of TFIIH with XPC and XPG in human DNA nucleotide excision repair, without a preassembled repairosome. Mol Cell Biol 2001; 21:2281-91. [PMID: 11259578 PMCID: PMC86862 DOI: 10.1128/mcb.21.7.2281-2291.2001] [Citation(s) in RCA: 140] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
In mammalian cells, the core factors involved in the damage recognition and incision steps of DNA nucleotide excision repair are XPA, TFIIH complex, XPC-HR23B, replication protein A (RPA), XPG, and ERCC1-XPF. Many interactions between these components have been detected, using different physical methods, in human cells and for the homologous factors in Saccharomyces cerevisiae. Several human nucleotide excision repair (NER) complexes, including a high-molecular-mass repairosome complex, have been proposed. However, there have been no measurements of activity of any mammalian NER protein complex isolated under native conditions. In order to assess relative strengths of interactions between NER factors, we captured TFIIH from cell extracts with an anti-cdk7 antibody, retaining TFIIH in active form attached to magnetic beads. Coimmunoprecipitation of other NER proteins was then monitored functionally in a reconstituted repair system with purified proteins. We found that all detectable TFIIH in gently prepared human cell extracts was present in the intact nine-subunit form. There was no evidence for a repair complex that contained all of the NER components. At low ionic strength TFIIH could associate with functional amounts of each NER factor except RPA. At physiological ionic strength, TFIIH associated with significant amounts of XPC-HR23B and XPG but not other repair factors. The strongest interaction was between TFIIH and XPC-HR23B, indicating a coupled role of these proteins in early steps of repair. A panel of antibodies was used to estimate that there are on the order of 10(5) molecules of each core NER factor per HeLa cell.
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Affiliation(s)
- S J Araújo
- Imperial Cancer Research Fund, Clare Hall Laboratories, South Mimms, Hertfordshire EN6 3LD, United Kingdom
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Araújo SJ, Tirode F, Coin F, Pospiech H, Syväoja JE, Stucki M, Hübscher U, Egly JM, Wood RD. Nucleotide excision repair of DNA with recombinant human proteins: definition of the minimal set of factors, active forms of TFIIH, and modulation by CAK. Genes Dev 2000. [PMID: 10673506 DOI: 10.1101/gad.14.3.349] [Citation(s) in RCA: 139] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
During human nucleotide excision repair, damage is recognized, two incisions are made flanking a DNA lesion, and residues are replaced by repair synthesis. A set of proteins required for repair of most lesions is RPA, XPA, TFIIH, XPC-hHR23B, XPG, and ERCC1-XPF, but additional components have not been excluded. The most complex and difficult to analyze factor is TFIIH, which has a 6-subunit core (XPB, XPD, p44, p34, p52, p62) and a 3-subunit kinase (CAK). TFIIH has roles both in basal transcription initiation and in DNA repair, and several inherited human disorders are associated with mutations in TFIIH subunits. To identify the forms of TFIIH that can function in repair, recombinant XPA, RPA, XPC-hHR23B, XPG, and ERCC1-XPF were combined with TFIIH fractions purified from HeLa cells. Repair activity coeluted with the peak of TFIIH and with transcription activity. TFIIH from cells with XPB or XPD mutations was defective in supporting repair, whereas TFIIH from spinal muscular atrophy cells with a deletion of one p44 gene was active. Recombinant TFIIH also functioned in repair, both a 6- and a 9-subunit form containing CAK. The CAK kinase inhibitor H-8 improved repair efficiency, indicating that CAK can negatively regulate NER by phosphorylation. The 15 recombinant polypeptides define the minimal set of proteins required for dual incision of DNA containing a cisplatin adduct. Complete repair was achieved by including highly purified human DNA polymerase delta or epsilon, PCNA, RFC, and DNA ligase I in reaction mixtures, reconstituting adduct repair for the first time with recombinant incision factors and human replication proteins.
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Affiliation(s)
- S J Araújo
- Imperial Cancer Research Fund (ICRF), Clare Hall Laboratories, South Mimms, Hertfordshire EN6 3LD, UK
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Winkler GS, Araújo SJ, Fiedler U, Vermeulen W, Coin F, Egly JM, Hoeijmakers JH, Wood RD, Timmers HT, Weeda G. TFIIH with inactive XPD helicase functions in transcription initiation but is defective in DNA repair. J Biol Chem 2000; 275:4258-66. [PMID: 10660593 DOI: 10.1074/jbc.275.6.4258] [Citation(s) in RCA: 131] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
TFIIH is a multisubunit protein complex involved in RNA polymerase II transcription and nucleotide excision repair, which removes a wide variety of DNA lesions including UV-induced photoproducts. Mutations in the DNA-dependent ATPase/helicase subunits of TFIIH, XPB and XPD, are associated with three inherited syndromes as follows: xeroderma pigmentosum with or without Cockayne syndrome and trichothiodystrophy. By using epitope-tagged XPD we purified mammalian TFIIH carrying a wild type or an active-site mutant XPD subunit. Contrary to XPB, XPD helicase activity was dispensable for in vitro transcription, catalytic formation of trinucleotide transcripts, and promoter opening. Moreover, in contrast to XPB, microinjection of mutant XPD cDNA did not interfere with in vivo transcription. These data show directly that XPD activity is not required for transcription. However, during DNA repair, neither 5' nor 3' incisions in defined positions around a DNA adduct were detected in the presence of TFIIH containing inactive XPD, although substantial damage-dependent DNA synthesis was induced by the presence of mutant XPD both in cells and cell extracts. The aberrant damage-dependent DNA synthesis caused by the mutant XPD does not lead to effective repair, consistent with the discrepancy between repair synthesis and survival in cells from a number of XP-D patients.
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Affiliation(s)
- G S Winkler
- Department of Cell Biology and Genetics, Medical Genetics Center, Erasmus University Rotterdam, P. O. Box 1738, 3000 DR Rotterdam, The Netherlands
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Araújo SJ, Tirode F, Coin F, Pospiech H, Syväoja JE, Stucki M, Hübscher U, Egly JM, Wood RD. Nucleotide excision repair of DNA with recombinant human proteins: definition of the minimal set of factors, active forms of TFIIH, and modulation by CAK. Genes Dev 2000; 14:349-59. [PMID: 10673506 PMCID: PMC316364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
During human nucleotide excision repair, damage is recognized, two incisions are made flanking a DNA lesion, and residues are replaced by repair synthesis. A set of proteins required for repair of most lesions is RPA, XPA, TFIIH, XPC-hHR23B, XPG, and ERCC1-XPF, but additional components have not been excluded. The most complex and difficult to analyze factor is TFIIH, which has a 6-subunit core (XPB, XPD, p44, p34, p52, p62) and a 3-subunit kinase (CAK). TFIIH has roles both in basal transcription initiation and in DNA repair, and several inherited human disorders are associated with mutations in TFIIH subunits. To identify the forms of TFIIH that can function in repair, recombinant XPA, RPA, XPC-hHR23B, XPG, and ERCC1-XPF were combined with TFIIH fractions purified from HeLa cells. Repair activity coeluted with the peak of TFIIH and with transcription activity. TFIIH from cells with XPB or XPD mutations was defective in supporting repair, whereas TFIIH from spinal muscular atrophy cells with a deletion of one p44 gene was active. Recombinant TFIIH also functioned in repair, both a 6- and a 9-subunit form containing CAK. The CAK kinase inhibitor H-8 improved repair efficiency, indicating that CAK can negatively regulate NER by phosphorylation. The 15 recombinant polypeptides define the minimal set of proteins required for dual incision of DNA containing a cisplatin adduct. Complete repair was achieved by including highly purified human DNA polymerase delta or epsilon, PCNA, RFC, and DNA ligase I in reaction mixtures, reconstituting adduct repair for the first time with recombinant incision factors and human replication proteins.
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Affiliation(s)
- S J Araújo
- Imperial Cancer Research Fund (ICRF), Clare Hall Laboratories, South Mimms, Hertfordshire EN6 3LD, UK
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Abstract
The main pathway by which mammalian cells remove DNA damage caused by UV light and some other mutagens is nucleotide excision repair (NER). The best characterised components of the human NER process are those proteins defective in the inherited disorder xeroderma pigmentosum (XP). The proteins known to be involved in the first steps of the NER reaction (damage recognition and incision-excision) are heterotrimeric RPA, XPA, the 6 to 9 subunit TFIIH, XPC-hHR23B, XPG, and ERCC1-XPF. Many interactions between these proteins have been found in recent years using different methods both in mammalian cells and for the homologous proteins in yeast. There are virtually no quantitative measurements of the relative strengths of these interactions. Higher order associations between these proteins in solution and even the existence of a complete "repairosome" complex have been reported, which would have implications both for the mechanism of repair and for the interplay between NER and other cellular processes. Nevertheless, evidence for a completely pre-assembled functional repairosome in solution is inconclusive and the order of action of repair factors on damaged DNA is uncertain.
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Affiliation(s)
- S J Araújo
- Imperial Cancer Research Fund, Clare Hall Laboratories, South Mimms, Hertfordshire, UK
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