Screening of chloroplast promoters for Hevea brasiliensis chloroplast transformation

In recent years, the growth in the use of recombinant proteins has grown tremendously. With the aid of the advances in DNA recombinant biotechnology, molecular farming in plants has been applied to meet this increasing demand where plants have emerged as one of the most promising general production...

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Main Authors:	Ag Ismail, Anas Akmal, Zainal Abidin, Zaima Azira, Zainuddin, Zarina
Format:	Article
Language:	English
Published:	Universiti Teknologi Malaysia 2015
Subjects:	TP248.13 Biotechnology
Online Access:	http://irep.iium.edu.my/46834/ http://irep.iium.edu.my/46834/ http://irep.iium.edu.my/46834/1/Anas_Jurnal_Teknologi_2015.pdf

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recordtype	eprints
spelling	iium-468342017-08-23T06:41:03Z http://irep.iium.edu.my/46834/ Screening of chloroplast promoters for Hevea brasiliensis chloroplast transformation Ag Ismail, Anas Akmal Zainal Abidin, Zaima Azira Zainuddin, Zarina TP248.13 Biotechnology In recent years, the growth in the use of recombinant proteins has grown tremendously. With the aid of the advances in DNA recombinant biotechnology, molecular farming in plants has been applied to meet this increasing demand where plants have emerged as one of the most promising general production platforms for recombinant proteins. Hevea brasiliensis is one of the main commodities in Malaysia and widely cultivated species for commercial production of latex. This important plant has been used to express recombinant proteins such as a single-chain variable fragment (scFv) antibody against the coat protein of Streptococcus gordonii (an oral dental bacterium), human serum albumin and human atrial natriuretic. The genes that encodes for the recombinant proteins were targeted into the nucleus genome of Hevea but the proteins were expressed in low concentration. Generating transgenic plant using chloroplast transformation offers many advantages in comparison to nuclear transformation and many researches have been made to apply this strategy to enhance agronomic traits or produce recombinant protein in several plant species. Since chloroplast is highly polyploidy, it allows high-level foreign protein expression. Given the generally very high foreign protein accumulation rates that can be achieved in transgenic chloroplasts, the aim of this study is to screen a number of chosen endogenous Hevea chloroplast promoters to drive the expression of the reporter gene, uidA for Hevea specific chloroplast transformation vector. Three promoters were chosen for this experiment which are; rbcL, psbA and rrn16 promoters. The putative regions of these promoters were derived from the chloroplast genome sequence of Hevea. Analyses of the three putative promoter regions using multiple sequence alignment with comparable regions from other plant species show significant sequence homology. Further analyses of the putative regions using in-vitro transcription are planned for future study. It is hoped that with the development of an optimized expression vector will allow high expression of valuable recombinant protein in the chloroplast of Hevea. Keywords: Hevea brasiliensis, chloroplast transformation vector, promoter, rbcL, psbA, rrn16 © Universiti Teknologi Malaysia 2015-10-15 Article PeerReviewed application/pdf en http://irep.iium.edu.my/46834/1/Anas_Jurnal_Teknologi_2015.pdf Ag Ismail, Anas Akmal and Zainal Abidin, Zaima Azira and Zainuddin, Zarina (2015) Screening of chloroplast promoters for Hevea brasiliensis chloroplast transformation. Jurnal Teknologi, 77 (24). pp. 165-170. ISSN 2180–3722 (O), 0127–9696 (P) http://www.jurnalteknologi.utm.my
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	TP248.13 Biotechnology
spellingShingle	TP248.13 Biotechnology Ag Ismail, Anas Akmal Zainal Abidin, Zaima Azira Zainuddin, Zarina Screening of chloroplast promoters for Hevea brasiliensis chloroplast transformation
description	In recent years, the growth in the use of recombinant proteins has grown tremendously. With the aid of the advances in DNA recombinant biotechnology, molecular farming in plants has been applied to meet this increasing demand where plants have emerged as one of the most promising general production platforms for recombinant proteins. Hevea brasiliensis is one of the main commodities in Malaysia and widely cultivated species for commercial production of latex. This important plant has been used to express recombinant proteins such as a single-chain variable fragment (scFv) antibody against the coat protein of Streptococcus gordonii (an oral dental bacterium), human serum albumin and human atrial natriuretic. The genes that encodes for the recombinant proteins were targeted into the nucleus genome of Hevea but the proteins were expressed in low concentration. Generating transgenic plant using chloroplast transformation offers many advantages in comparison to nuclear transformation and many researches have been made to apply this strategy to enhance agronomic traits or produce recombinant protein in several plant species. Since chloroplast is highly polyploidy, it allows high-level foreign protein expression. Given the generally very high foreign protein accumulation rates that can be achieved in transgenic chloroplasts, the aim of this study is to screen a number of chosen endogenous Hevea chloroplast promoters to drive the expression of the reporter gene, uidA for Hevea specific chloroplast transformation vector. Three promoters were chosen for this experiment which are; rbcL, psbA and rrn16 promoters. The putative regions of these promoters were derived from the chloroplast genome sequence of Hevea. Analyses of the three putative promoter regions using multiple sequence alignment with comparable regions from other plant species show significant sequence homology. Further analyses of the putative regions using in-vitro transcription are planned for future study. It is hoped that with the development of an optimized expression vector will allow high expression of valuable recombinant protein in the chloroplast of Hevea. Keywords: Hevea brasiliensis, chloroplast transformation vector, promoter, rbcL, psbA, rrn16 ©
format	Article
author	Ag Ismail, Anas Akmal Zainal Abidin, Zaima Azira Zainuddin, Zarina
author_facet	Ag Ismail, Anas Akmal Zainal Abidin, Zaima Azira Zainuddin, Zarina
author_sort	Ag Ismail, Anas Akmal
title	Screening of chloroplast promoters for Hevea brasiliensis chloroplast transformation
title_short	Screening of chloroplast promoters for Hevea brasiliensis chloroplast transformation
title_full	Screening of chloroplast promoters for Hevea brasiliensis chloroplast transformation
title_fullStr	Screening of chloroplast promoters for Hevea brasiliensis chloroplast transformation
title_full_unstemmed	Screening of chloroplast promoters for Hevea brasiliensis chloroplast transformation
title_sort	screening of chloroplast promoters for hevea brasiliensis chloroplast transformation
publisher	Universiti Teknologi Malaysia
publishDate	2015
url	http://irep.iium.edu.my/46834/ http://irep.iium.edu.my/46834/ http://irep.iium.edu.my/46834/1/Anas_Jurnal_Teknologi_2015.pdf
first_indexed	2023-09-18T21:06:39Z
last_indexed	2023-09-18T21:06:39Z
_version_	1777410978014560256

Screening of chloroplast promoters for Hevea brasiliensis chloroplast transformation

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