JP5080452B2 - 改良された発現エレメント - Google Patents
改良された発現エレメント Download PDFInfo
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- JP5080452B2 JP5080452B2 JP2008511772A JP2008511772A JP5080452B2 JP 5080452 B2 JP5080452 B2 JP 5080452B2 JP 2008511772 A JP2008511772 A JP 2008511772A JP 2008511772 A JP2008511772 A JP 2008511772A JP 5080452 B2 JP5080452 B2 JP 5080452B2
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Description
本発明は、作動可能に連結された転写ユニットに対して改良された発現を与えるエレメントを含むポリヌクレオチドに関する。これらのエレメントは、リボソームタンパク質遺伝子のプロモーター領域と自然に連結され、そして組み換えDNA構築物において、高く、かつ再現性あるレベルの遺伝子発現を与える。本発明はまた、細胞培養およびその他の生物工学適用における組み換えタンパク質の産生のための、このようなポリヌクレオチド配列を含むベクター、このようなベクターを含む宿主細胞、およびこのようなポリヌクレオチド、ベクターまたは宿主細胞の治療における使用に関する。
本明細書の説明および請求項全体で、用語「包含する(comprise)」および「含む(contain)」およびこれら用語の改変例、例えば、「包含している(comprising)」および「包含する(comprises)」は、「制限されずに含むこと」を意味し、そしてその他の成分、添加物、構成要素、完全体または工程を排除することは意図されない(そしてされない)。
本明細書で用いられるとき、プロモーター領域は、プロモーター、および転写開始部位の5’配列の上流の5kbおよび最初のエキソンの遠位端の下流の500bp3’配列と一緒の転写開始部位であるとして規定される。
a)リボソームタンパク質遺伝子のプロモーター領域からの少なくとも500の連続するヌクレオチドを含むエレメント、
b)異質プロモーター、
c)この異質プロモーターに隣接する転写可能な核酸配列を含む、単離されたポリヌクレオチドを提供し、
ここで、上記転写可能な核酸配列は、上記異質プロモーターから転写され、そしてこの転写のレベルが上記エレメントによって増大される。好ましくは、上記エレメントは、1kbを超え、そして最も好ましくは3kbを超えるリボソームタンパク質遺伝子の5’非翻訳配列を含む。
a)リボソームタンパク質遺伝子のプロモーター領域からの少なくとも500の連続するヌクレオチドを含むエレメント、
b)異質プロモーター、
c)複数クローニング部位、を含み、
ここで、上記複数クローニング部位中に挿入された転写可能な核酸が、上記異質プロモーターから転写され得、そしてこの転写のレベルは上記エレメントによって増大される。
(材料および方法)
(マイクロアレイ分析)
総RNAを、RNeasyRNA抽出キット(Qiagen、Crawley、UK)を用い、製造業者のプロトコールに従って、約80%集密のCHO−K1細胞から抽出した。総RNA(2μg/μl)を、13,443の公知の転写物を提示するマウス70マーオリゴヌクレオチドライブラリー(オペロンV.1)を用いるマイクロアレイ発現分析に供した。Cincinnati大学、Genomics and Microarray Laboratoryが、参照プロトコール(http://microarray.uc.edu)に従って、マイクロアレイ分析を請け負った。
PCRオリゴヌクレオチドは、完全なCpGアイランドが包埋されたプロモーター領域を包含し、その一方、公知または推定されるコード配列構造に従って約500bpのコード配列を含む約3kbのフラグメントを増幅するように設計された(表2を参照のこと)。
プレミックスA−F(Cambio、UK)、1ユニットのTaq DNAポリメラーゼ(Promega、UK)および200ngのテンプレートDNAを用いた達成された。初期変性は96℃で2分間であり、その一方PCR増幅は、35サイクル(94℃1分間、55〜60℃1分間、72℃5分間実施された。)最終伸長ステップ(72℃10分間)が含められた。
コントロール発現ベクター(CET1005EGFP、配列番号20と指定される)を、pEGFP−N1からのhCMV/EGFP/sv40pA(NheI/AgeI欠失複数クローニング部位)のCET900中への挿入により、次いで、このベクターからのAscIカセットのCET1005のAscI部位中への挿入により構築した。
CHO−K1細胞を、HAMS F12(Invitrogen、UK)プラス4500mg/l L−アナニル−L−グルタミン、10μg/mlの各々ペニシリンおよびストレプトマイシン、および10%(v/v)熱不活性化ウシ胎児血清(FCS;Invitrogen、Paisley、UK)中で増殖した。トランスフェクションは、80%の集密培養からの約107細胞、および250Vで975μFの単一パルスを送達するためのBioRad Gene PulserIITMセットを用いるエレクトロポーレーションによって実施した。トランスフェクションは、2μgの線状化CET1005EGFPプラスミド、および異なるサイズの発現ベクターに対して当モル量を用いた。安定にトランスフェクションされた細胞を選択し、そして12.5μ/mlの硫酸ピューロマイシン(Sigma、UK)を含む増殖培地中に維持した。
EGFPレポーター構築物でトランスフェクトされた細胞の分析は、Becton−Dickinson FACScanで、親CHO−K1細胞株をバックグラウンドの自動蛍光コントロールとして用いた。
配列番号1は、RPS3クローン化配列(ヌクレオチド38〜3154)を示し;配列番号17は、pRPS3−1005−EGFPの完全プラスミド配列を示し;配列番号18は、pCET1015−EGFPの完全プラスミド配列を示す。
配列番号2は、RPS11のクローン化された配列(ヌクレオチド12〜3032)を示し;配列番号19は、pRPS11−1005−EGFPの完全配列を示す。
Claims (23)
- 単離されたポリヌクレオチドであって、
a)哺乳動物rps3遺伝子のプロモーター領域からの3000より多い連続するヌクレオチドを含む拡大されたメチル化のないCpGアイランド、
b)異種プロモーター、
c)該異種プロモーターに隣接する転写可能な核酸配列を含み、
ここで、該転写可能な核酸配列の該異種プロモーターからの転写が、該拡大されたメチル化のないCpGアイランドの存在下で、該拡大されたメチル化のないCpGアイランドの不存在下に比べて増大される、ポリヌクレオチド。 - 前記拡大されたメチル化のないCpGアイランドが、前記哺乳動物rps3遺伝子の1つ以上のエキソンをさらに含む、請求項1に記載のポリヌクレオチド。
- 前記哺乳動物rps3遺伝子はヒトrps3遺伝子である、請求項1に記載のポリヌクレオチド。
- 前記哺乳動物rps3遺伝子はげっ歯類rps3遺伝子である、請求項1に記載のポリヌクレオチド。
- 前記げっ歯類rps3遺伝子はマウスのrps遺伝子である、請求項4に記載のポリヌクレオチド。
- 配列番号1のヌクレオチド配列を含む、請求項5に記載のポリヌクレオチド。
- 前記異種プロモーターが構成的プロモーターである、請求項1に記載のポリヌクレオチド。
- 前記構成的プロモーターが、サイトメガロウイルス初期/即時プロモーター、SV40、EF−1α、ラウスザルコーマウイルス(RSV)LTRおよびHIV2 LTRからなるリストから選択される、請求項7に記載のポリヌクレオチド。
- 前記構成的プロモーターが、サイトメガロウイルス初期/即時プロモーターである、請求項8に記載のポリヌクレオチド。
- 前記構成的プロモーターが、モルモットサイトメガロウイルス初期/即時プロモーターである、請求項9に記載のポリヌクレオチド。
- 前記構成的プロモーターが、マウスサイトメガロウイルス初期/即時プロモーターである、請求項9に記載のポリヌクレオチド。
- 前記異種プロモーターが、組織特異的プロモーターである、請求項1に記載のポリヌクレオチド。
- 前記異種プロモーターが、腫瘍特異的プロモーターである、請求項12に記載のポリヌクレオチド。
- 前記プロモーターが、癌胎児抗原(CEA)、前立腺特異的抗原(PSA)、シクロオキシゲナーゼ−2(COX−2)、α−フェトプロテイン(AFP)、チロシナーゼ、およびT細胞因子1−4(TCF)を基礎にしたプロモーターからなるリストから選択される、請求項13に記載のポリヌクレオチド。
- 前記転写可能な核酸が、抗体、抗体の機能的エピトープ結合性フラグメント、成長因子、サイトカイン、プロテインキナーゼ、可溶性レセプター、膜結合レセプター、血液凝固因子などから選択されるポリペプチドをコードする、請求項1に記載のポリヌクレオチド。
- 請求項1〜15のいずれか1項に記載のポリヌクレオチドを含むベクター。
- 請求項16に記載の真核生物発現ベクター。
- 真核生物発現ベクターであって、
a)哺乳動物rps3遺伝子のプロモーター領域からの3000より多い連続するヌクレオチドを含む拡大されたメチル化のないCpGアイランド、
b)異種プロモーター、
c)複数クローニング部位、を含み、
ここで、該複数クローニング部位中に挿入された転写可能な核酸が、該異種プロモーターから転写され得、そして該転写のレベルが該拡大されたメチル化のないCpGアイランドによって増大される、ベクター。 - 請求項1〜15のいずれか1項に記載の単離されたポリヌクレオチド、または請求項16、17または18に記載のベクターを含む、宿主細胞。
- 前記細胞が、CHO、NSO、BHK、HeLa、HepG2からなるリストから選択される、請求項19に記載の宿主細胞。
- 転写可能な核酸によってコードされるポリペプチドを発現する方法であって、該方法は、請求項16〜18のいずれかに記載の発現ベクターを適切な宿主細胞に挿入する工程、および該宿主細胞を該ポリペプチドの発現を可能にするに適切な条件で培養する工程、を包含する、方法。
- 請求項1〜15のいずれか1項に記載のポリヌクレオチド、請求項16〜18のいずれか1項に記載のベクター、または請求項19もしくは請求項20のいずれか1項に記載の宿主細胞、および薬学的に受容可能なキャリアを含む、薬学的組成物。
- 請求項1〜15のいずれか1項に記載のポリヌクレオチド、請求項16〜18のいずれか1項に記載のベクター、または請求項19もしくは請求項20のいずれか1項に記載の宿主細胞を含む、医薬として使用するための組成物。
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| GB0509965.0 | 2005-05-17 | ||
| US68227705P | 2005-05-18 | 2005-05-18 | |
| US60/682,277 | 2005-05-18 | ||
| PCT/GB2006/001656 WO2006123097A2 (en) | 2005-05-17 | 2006-05-09 | Improved expression elements |
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| JP5080452B2 true JP5080452B2 (ja) | 2012-11-21 |
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| EP (2) | EP2295589A1 (ja) |
| JP (1) | JP5080452B2 (ja) |
| CN (1) | CN101208435B (ja) |
| AT (1) | ATE494381T1 (ja) |
| DE (1) | DE602006019422D1 (ja) |
| ES (1) | ES2358680T3 (ja) |
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| HUE036449T2 (hu) | 2003-06-24 | 2018-07-30 | Genzyme Corp | Új béta-aktin és RPS21 promóterek és alkalmazásaik |
| WO2008044869A1 (en) * | 2006-10-10 | 2008-04-17 | Viromed Co., Ltd. | Expression vectors with improved safety |
| US20090142805A1 (en) * | 2007-01-08 | 2009-06-04 | Millipore Corporation | High expression cell line that eliminates gene amplification |
| WO2009155950A1 (en) | 2008-06-27 | 2009-12-30 | King Faisal Specialist Hospital And Research Centre | Cloning-free method of generating transcriptionally and post-transcriptionally controllable expression active linear reporter constructs |
| US20110190156A1 (en) * | 2008-07-15 | 2011-08-04 | Trustees Of Dartmouth College | Molecular signatures for diagnosing scleroderma |
| WO2010111653A2 (en) * | 2009-03-27 | 2010-09-30 | The Uab Research Foundation | Modulating ires-mediated translation |
| WO2010147464A1 (en) | 2009-06-15 | 2010-12-23 | Cellagenics B.V. | Use of a cysteine synthesizing enzyme as selectable marker |
| WO2012019630A1 (en) | 2010-08-13 | 2012-02-16 | Curevac Gmbh | Nucleic acid comprising or coding for a histone stem-loop and a poly(a) sequence or a polyadenylation signal for increasing the expression of an encoded protein |
| CN103180443B (zh) * | 2010-09-01 | 2016-01-13 | 萨拉基尼克有限公司 | 用于增强基因表达的来自核糖体蛋白启动子的核酸片段 |
| JP6025745B2 (ja) | 2011-11-28 | 2016-11-16 | 第一三共株式会社 | ヒト遺伝子由来プロモーター |
| WO2013120499A1 (en) | 2012-02-15 | 2013-08-22 | Curevac Gmbh | Nucleic acid comprising or coding for a histone stem-loop and a poly (a) sequence or a polyadenylation signal for increasing the expression of an encoded pathogenic antigen |
| DK3578659T3 (da) | 2012-03-27 | 2024-02-05 | CureVac SE | Kunstige nukelinsyremolekyler til forbedret protein- eller peptidekspression |
| US20150105433A1 (en) * | 2012-04-27 | 2015-04-16 | The Uab Research Foundation | TREATING VIRAL INFECTIONS HAVING VIRAL RNAs TRANSLATED BY A NON-IRES MEDIATED MECHANISM |
| MX372790B (es) * | 2013-12-30 | 2020-07-03 | CureVac SE | Moleculas artificiales de acido nucleico. |
| US11254951B2 (en) | 2014-12-30 | 2022-02-22 | Curevac Ag | Artificial nucleic acid molecules |
| EP3842537A1 (en) * | 2013-12-30 | 2021-06-30 | CureVac AG | Artificial nucleic acid molecules |
| ES2962385T3 (es) * | 2014-10-15 | 2024-03-18 | Amgen Inc | Elementos promotores y reguladores para mejorar la expresión de genes heterólogos en células hospederas |
| WO2017040738A1 (en) * | 2015-09-02 | 2017-03-09 | Regeneron Pharmaceuticals, Inc. | Rodent model of prostate cancer |
| WO2018206168A1 (en) * | 2017-05-11 | 2018-11-15 | Zentrum Für Forschungsförderung In Der Pädiatrie Gmbh | Concept for the treatment of monogenetic disorders |
| US20210317498A1 (en) | 2018-08-09 | 2021-10-14 | Daiichi Sankyo Company, Limited | PROMOTER of Hspa8 GENE |
| CN111249457A (zh) * | 2020-04-13 | 2020-06-09 | 吉林大学 | 核糖体蛋白sa抗体在免疫调节中的医用用途 |
| KR20250007570A (ko) | 2022-04-26 | 2025-01-14 | 다이이찌 산쿄 가부시키가이샤 | Eno1 유전자의 프로모터 |
| CN116064624A (zh) * | 2022-09-15 | 2023-05-05 | 思鹏生物科技(苏州)有限公司 | 利用rpl基因促进载体稳定表达的方法及其功能基因 |
| CN116064663A (zh) * | 2022-09-15 | 2023-05-05 | 思鹏生物科技(苏州)有限公司 | 利用rps基因促进载体稳定表达的方法及其功能基因 |
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| Publication number | Publication date |
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| DE602006019422D1 (de) | 2011-02-17 |
| CN101208435A (zh) | 2008-06-25 |
| GB0509965D0 (en) | 2005-06-22 |
| EP1891223B1 (en) | 2011-01-05 |
| JP2008539781A (ja) | 2008-11-20 |
| US20100015107A1 (en) | 2010-01-21 |
| EP1891223A2 (en) | 2008-02-27 |
| ATE494381T1 (de) | 2011-01-15 |
| US7632661B2 (en) | 2009-12-15 |
| EP2295589A1 (en) | 2011-03-16 |
| CN101208435B (zh) | 2012-05-23 |
| WO2006123097A3 (en) | 2007-01-11 |
| US20080097088A1 (en) | 2008-04-24 |
| ES2358680T3 (es) | 2011-05-12 |
| WO2006123097A2 (en) | 2006-11-23 |
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