27
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      A search for mosquito larvicidal compounds by blocking the sterol carrying protein, AeSCP-2, through computational screening and docking strategies

      research-article

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Background:

          Sterol is a very vital compound for most of the insects and mosquitoes to complete their life cycle. Unfortunately mosquitoes cannot synthesize the sterol, it depends on mammals for the same. Mosquitoes take the sterol from the plant decays during their larval stage in the form of phytosterol, which is then converted to cholesterol for further growth and reproduction. This conversion occurs with the help of the sterol carrier protein 2(SCP2).

          Methods:

          Mosquito populations are controlled by plant-based inhibitors, which inhibit sterol carrier protein (SCPI-Sterol carrier protein inhibitor) activity. In this article, we explain the methods of inhibiting Aedes aegypti SCP2 by insilico methods including natural inhibitor selection and filtrations by virtual screening and interaction studies.

          Results:

          In this study protein-ligand interactions were carried out with various phytochemicals, as a result of virtual screening Alpha-mangostin and Panthenol were found to be good analogs, and were allowed to dock with the mosquito cholesterol carrier protein AeSCP-2.

          Conclusion:

          Computational selections of SCPIs are highly reliable and novel methods for discovering new and more effective compounds to control mosquitoes.

          Related collections

          Most cited references35

          • Record: found
          • Abstract: found
          • Article: not found

          Comparative genome and proteome analysis of Anopheles gambiae and Drosophila melanogaster.

          Comparison of the genomes and proteomes of the two diptera Anopheles gambiae and Drosophila melanogaster, which diverged about 250 million years ago, reveals considerable similarities. However, numerous differences are also observed; some of these must reflect the selection and subsequent adaptation associated with different ecologies and life strategies. Almost half of the genes in both genomes are interpreted as orthologs and show an average sequence identity of about 56%, which is slightly lower than that observed between the orthologs of the pufferfish and human (diverged about 450 million years ago). This indicates that these two insects diverged considerably faster than vertebrates. Aligned sequences reveal that orthologous genes have retained only half of their intron/exon structure, indicating that intron gains or losses have occurred at a rate of about one per gene per 125 million years. Chromosomal arms exhibit significant remnants of homology between the two species, although only 34% of the genes colocalize in small "microsyntenic" clusters, and major interarm transfers as well as intra-arm shuffling of gene order are detected.
            Bookmark
            • Record: found
            • Abstract: found
            • Article: not found

            Isolation and expression of a sterol carrier protein-2 gene from the yellow fever mosquito, Aedes aegypti.

            K Krebs, Y. LAN (2003)
            Trafficking of cholesterol in insects is a very important process due to the fact that insects depend on dietary cholesterol to fulfil their physiological needs. We identified a putative mosquito sterol carrier protein-2 (SCP-2) cDNA from fourth instar subtracted cDNA library. The AeSCP-2 protein has high degree homology in the sterol transfer domain to both rat and human SCP-2. Transcripts of AeSCP-2 in fourth instars were detected strongly in the midgut, and weakly in the head and hindgut. In the early pupae, AeSCP-2 transcription was observed in the thorax, head and body wall of abdomen, but not in the gut. The interaction of mosquito sterol carrier protein-2 (AeSCP-2) with cholesterol was examined. The Kd of purified recombinant AeSCP-2 to cholesterol was 5.6 +/- 0.6 x 10-9 m using radiolabelled cholesterol-binding assay. The results suggest that AeSCP-2 has high affinity to cholesterol and may function as a carrier protein in mosquitoes.
              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              Insecticidal properties of volatile extracts of orange peels.

              Statistical studies using the randomised complete block design with four replicates showed that volatile extracts of two species of orange peel--Citrus sinensis (sweet orange) and Citrus aurantifolia (lime) had insecticidal activity against mosquito, cockroach and housefly. Insecticidal activity was better after 60 min than at 30 min spraying of rooms. Volatile extracts of C. sinensis showed greater insecticidal potency, while the cockroach was the most susceptible to the orange peels among the three insects studied.
                Bookmark

                Author and article information

                Journal
                Pharmacognosy Res
                PR
                Pharmacognosy Research
                Medknow Publications Pvt Ltd (India )
                0976-4836
                0974-8490
                Jul-Aug 2010
                : 2
                : 4
                : 247-253
                Affiliations
                [1] Department of Bioinformatics, Sathyabama University, Chennai-600 119, India.
                [1 ] Department of Bioinformatics, AVIT, Chennai-603 104, India.
                [2 ] Department of Zoology and Division of Wildlife Biology, A.V.C. College, Mayiladuthurai -609305, India.
                Author notes
                Address for correspondence: R. Barani Kumar, Lecturer, Department of Bioinformatics, Sathyabama University, Chennai, India, E-mail: baranisathyabama@ 123456gmail.com
                Article
                PR-2-247
                10.4103/0974-8490.69126
                3141136
                21808576
                4ad3d9b5-7979-41ae-adcb-ca2597d48070
                Copyright: © Pharmacognosy Research

                This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 12 May 2010
                : 22 May 2010
                : 07 September 2010
                Categories
                Original Article

                Pharmacology & Pharmaceutical medicine
                docking,mosquito sterol carrier protein,scpi,phytochemicals,computational screening

                Comments

                Comment on this article