The present inventors found that previously attempted
methods for ทรานสฟอร์ม Euglena are problematic in that the
introduced gene cannot be stably retained. To solve this problem,
the inventors conducted extensive research. First, based on a
report of double-stranded RNA being introduced into Euglena to 30 induce RNAi, the inventors investigated whether การทรานสฟอร์ม
can be performed in the same manner. More specifically, they
attempted to introduce genes by electroporation. However, no
Euglena carrying the introduced genes in an expressible manner was obtained.
The inventors then conceived of ทรานสฟอร์ม Euglena by
using the Agrobacterium method as a completely different process, and it has become evident that Euglena carrying the introduced genes in an expressible manner can be actually obtained by the
method.
The inventors further conducted extensive research
based on the above finding and accomplished the present invention. The invention is described below.
[0011]
1. Euglena of the Present Invention
[1-1]
A Euglena carrying a drug resistance gene and a foreign
gene of interest in an expressible manner.
15 [1-2]
The Euglena according to [1-1] , which carries the drug
resistance gene and the foreign gene of interest in an
expressible manner until it is subcultured for at least 10
passages in the absence of the drug.
20 [1-3]
The Euglena according to [1-1] or [1-2] , wherein the
drug is zeocin, hygromycin, or G418.
[1-4]
The Euglena according to any one of [1-1] to [1-3] ,
25 wherein the drug resistance gene and the foreign gene of interest
are under control of at least an endogenous promoter in the
Euglena.
[1-5]
The Euglena according to any one of [1-1] to [1-4] ,
30 wherein the drug resistance gene and the foreign gene of interest
are integrated in the genome.
[1-6]
The Euglena according to any one of [1-1] to [1-5] ,
which is obtainable by a method comprising the step of (1)
35 introducing the drug resistance gene and the foreign gene of
interest into a Euglena by the Agrobacterium method. [1-7]
The Euglena according to [1-6] , which is obtainable by
the method further comprising the step of (2) culturing the
Euglena obtained in step (1) in the presence of the drug.
[1-8]
The Euglena according to [1-7] , wherein the culture is
performed at a pH of 6 to 8.
[0012]
2. Method for Producing Euglena of the Present Invention
[2-1]
A method for producing a Euglena carrying a drug
resistance gene and a foreign gene of interest in an expressible manner, the method comprising the step of:
(1) introducing the drug resistance gene and the foreign gene of
interest into a Euglena by the Agrobacterium method. [2-2]
The method according to [2-1] , further comprising the
step of:
(2) culturing the Euglena obtained in step (1) in the presence of
the drug.
[2-3]
The method according to [2-1] or [2-2] , wherein the
drug is zeocin, hygromycin, or G418.
[2-4]
The method according to [2-3] , wherein the culture is
performed at a pH of 6 to 8.
[2-5]
The method according to any one of [2-1] to [2-4] ,
wherein the drug resistance gene and the foreign gene of interest
are under control of at least a Euglena endogenous promoter.
[2-6]
The method according to any one of [2-1] to [2-5] ,
wherein, in the Euglena produced, the drug resistance gene and
the foreign gene of interest are integrated in the chromosomal
genome by homologous recombination.
Advantageous Effects of Invention [0013]
The present invention makes it possible to provide a
Euglena ที่ถุกทรานสฟอร์ม with a gene of interest. The invention also makes it possible to provide a method for ทรานสฟอร์ม a Euglena with a gene of interest. The invention enables the introduced
trait to be retained for a long period of time and thus, for
example, is more suitable for substance production.
Brief Description of Drawings
[0014]
Fig. 1 is a plasmid map of pCMV/Zeo.
นักประดิษฐ์ปัจจุบันพบว่ามีความพยายามก่อนหน้านี้วิธีการทรานสฟอร์มยูกลีนาจะมีปัญหาในที่นี้ไม่สามารถสะสมนำยีน stably การแก้ปัญหา นักประดิษฐ์ที่ดำเนินการวิจัยอย่างละเอียด ก่อน ยึดเป็น รายงานของขนคู่อาร์เอ็นเอถูกนำเข้าสู่ยูกลีนาถึง 30 RNAi ที่ก่อให้เกิดนักประดิษฐ์ที่ตรวจสอบว่าการทรานสฟอร์มสามารถทำในลักษณะเดียวกัน อื่น ๆ โดยเฉพาะ พวกเขาพยายามแนะนำยีน โดย electroporation อย่างไรก็ตาม ไม่ยูกลีนาโดยนำยีนในลักษณะ expressible ได้รับนักประดิษฐ์ที่แล้วรู้สึกของทรานสฟอร์มยูกลีนาโดยใช้วิธีอโกรแบคทีเรียมเป็นกระบวนการที่แตกต่างกันโดยสิ้นเชิง และมันได้กลายเป็นชัดว่า ยูกลีนาโดยนำยีนในลักษณะ expressible มีจริงได้โดยการ วิธีการนักประดิษฐ์ที่ดำเนินการวิจัยต่อไปตามค้นหาข้างต้น และทำสิ่งประดิษฐ์นำเสนอ ประดิษฐ์ที่อธิบายไว้ด้านล่าง [0011]1. ยูกลีนาของประดิษฐ์อยู่[1-1]ยูกลีนาที่ถือครองเป็นยีนต้านทานยาเสพติดและต่างประเทศยีนที่น่าสนใจในการ expressible15 [1 - 2]ยูกลีนาตาม [1-1], ซึ่งนำยาเสพติดยีนต้านทานและยีนต่างประเทศน่าสนใจในการลักษณะ expressible จนกว่ามันจะ subcultured น้อย 10ทางเดินในกรณียาเสพติด20 [1-3]ยูกลีนาตาม [1-1] หรือ [1 - 2] นั้นจะdrug is zeocin, hygromycin, or G418.[1-4]The Euglena according to any one of [1-1] to [1-3] ,25 wherein the drug resistance gene and the foreign gene of interestare under control of at least an endogenous promoter in theEuglena.[1-5]The Euglena according to any one of [1-1] to [1-4] ,30 wherein the drug resistance gene and the foreign gene of interestare integrated in the genome.[1-6]The Euglena according to any one of [1-1] to [1-5] ,which is obtainable by a method comprising the step of (1)35 introducing the drug resistance gene and the foreign gene of interest into a Euglena by the Agrobacterium method. [1-7]The Euglena according to [1-6] , which is obtainable bythe method further comprising the step of (2) culturing the Euglena obtained in step (1) in the presence of the drug.[1-8]The Euglena according to [1-7] , wherein the culture isperformed at a pH of 6 to 8.[0012] 2. Method for Producing Euglena of the Present Invention[2-1]A method for producing a Euglena carrying a drugresistance gene and a foreign gene of interest in an expressible manner, the method comprising the step of: (1) introducing the drug resistance gene and the foreign gene ofinterest into a Euglena by the Agrobacterium method. [2-2]The method according to [2-1] , further comprising thestep of: (2) culturing the Euglena obtained in step (1) in the presence ofthe drug.[2-3]The method according to [2-1] or [2-2] , wherein thedrug is zeocin, hygromycin, or G418. [2-4]The method according to [2-3] , wherein the culture isperformed at a pH of 6 to 8.[2-5]The method according to any one of [2-1] to [2-4] , wherein the drug resistance gene and the foreign gene of interestare under control of at least a Euglena endogenous promoter.[2-6]The method according to any one of [2-1] to [2-5] ,wherein, in the Euglena produced, the drug resistance gene and the foreign gene of interest are integrated in the chromosomal genome by homologous recombination.Advantageous Effects of Invention [0013] The present invention makes it possible to provide aEuglena ที่ถุกทรานสฟอร์ม with a gene of interest. The invention also makes it possible to provide a method for ทรานสฟอร์ม a Euglena with a gene of interest. The invention enables the introduced trait to be retained for a long period of time and thus, for example, is more suitable for substance production.Brief Description of Drawings[0014]Fig. 1 is a plasmid map of pCMV/Zeo.
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