Characterization of transcription factors in plasmodium falciparum

Malaria is an important human infectious disease affecting millions of people every year. Despite years of research, transcriptional regulatory mechanisms in Plasmodium are still poorly understood. The presence of a large number of zinc finger proteins amongst the potential specific transcription fa...

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Main Author: Luah, Yen Hoon
Other Authors: Zbynek Bozdech
Format: Theses and Dissertations
Language:English
Published: 2014
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Online Access:https://hdl.handle.net/10356/61728
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-617282023-02-28T18:34:47Z Characterization of transcription factors in plasmodium falciparum Luah, Yen Hoon Zbynek Bozdech School of Biological Sciences DRNTU::Science::Biological sciences Malaria is an important human infectious disease affecting millions of people every year. Despite years of research, transcriptional regulatory mechanisms in Plasmodium are still poorly understood. The presence of a large number of zinc finger proteins amongst the potential specific transcription factors suggests the importance of these proteins. In this thesis, we characterized PF10_0083, a putative transcription factor that belongs to the CCCH type zinc finger family. Using over-expression and knock-out cell lines, we carried out molecular characterization of this protein. PF10_0083 protein level was found to peak during the schizont stage, and the peak protein levels coincided with its nuclear localization. PF10_0083 was found to be expressed in only a sub-population of schizonts. We demonstrated that the over-expression of PF10_0083 resulted in enhanced gametocyte production, while the knock-out of PF10_0083 caused decreased gametocyte production. In addition, we showed that PF10_0083 is capable of associating with DNA. We demonstrated that PF10_0083 preferentially binds to the IGRs on the genome, and that this binding positively correlated with the transcriptional up-regulation of the gametocyte genes. As such, we conclude that PF10_0083 promotes the differentiation of asexual parasites to sexual forms under stress conditions. DOCTOR OF PHILOSOPHY (SBS) 2014-08-28T07:43:03Z 2014-08-28T07:43:03Z 2014 2014 Thesis Luah, Y. H. (2014). Characterization of transcription factors in plasmodium falciparum. Doctoral thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/61728 10.32657/10356/61728 en 266 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Science::Biological sciences
spellingShingle DRNTU::Science::Biological sciences
Luah, Yen Hoon
Characterization of transcription factors in plasmodium falciparum
description Malaria is an important human infectious disease affecting millions of people every year. Despite years of research, transcriptional regulatory mechanisms in Plasmodium are still poorly understood. The presence of a large number of zinc finger proteins amongst the potential specific transcription factors suggests the importance of these proteins. In this thesis, we characterized PF10_0083, a putative transcription factor that belongs to the CCCH type zinc finger family. Using over-expression and knock-out cell lines, we carried out molecular characterization of this protein. PF10_0083 protein level was found to peak during the schizont stage, and the peak protein levels coincided with its nuclear localization. PF10_0083 was found to be expressed in only a sub-population of schizonts. We demonstrated that the over-expression of PF10_0083 resulted in enhanced gametocyte production, while the knock-out of PF10_0083 caused decreased gametocyte production. In addition, we showed that PF10_0083 is capable of associating with DNA. We demonstrated that PF10_0083 preferentially binds to the IGRs on the genome, and that this binding positively correlated with the transcriptional up-regulation of the gametocyte genes. As such, we conclude that PF10_0083 promotes the differentiation of asexual parasites to sexual forms under stress conditions.
author2 Zbynek Bozdech
author_facet Zbynek Bozdech
Luah, Yen Hoon
format Theses and Dissertations
author Luah, Yen Hoon
author_sort Luah, Yen Hoon
title Characterization of transcription factors in plasmodium falciparum
title_short Characterization of transcription factors in plasmodium falciparum
title_full Characterization of transcription factors in plasmodium falciparum
title_fullStr Characterization of transcription factors in plasmodium falciparum
title_full_unstemmed Characterization of transcription factors in plasmodium falciparum
title_sort characterization of transcription factors in plasmodium falciparum
publishDate 2014
url https://hdl.handle.net/10356/61728
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