JP2005514930A - Ingapの発現を調節する因子の検出アッセイ - Google Patents
Ingapの発現を調節する因子の検出アッセイ Download PDFInfo
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Abstract
Description
本発明のもう1つの目的は、INGAPの発現を調節する作用因子を同定する方法を提供することである。
本発明のもう1つの目的は、INGAP5’−制御領域の核酸又は断片を提供することである。
本発明のもう1つの目的は、INGAPの発現を増加させる方法を提供することである。
本発明のもう1つの目的は、INGAPの発現を調節するキットを提供することである。
本明細書及び添付の請求項で使用する時、文脈で特に明確に指定しない限り、単数表現には複数のものを指す場合が含まれることに留意しなければならない。
本発明者らは、INGAP遺伝子が、PMA及びLIFを含めた多くの既知の転写因子による調節の影響を受けやすい5’−制御領域によって制御されることを発見した。
(ハムスターINGAPゲノム配列及び構造)
ハムスターのINGAPゲノム配列及び構造は、遺伝子歩行(クロンテック(Clontech))及びDNA配列決定法によって決定された。遺伝子歩行は、ゲノムDNAにおいて、cDNAのような既知の配列からプロモーターに向かって上流に、又は下流に歩行する方法である。この方法は、クローニングされていない、アダプターがライゲーションされた4つのゲノム断片ライブラリーを使用する。次の注目すべき事項を除いて、製造業者が推奨するプロトコルに従う:すなわち、クローニングされていない、アダプターがライゲーションされたゲノム断片ライブラリーの形成には、ハムスターのゲノムDNAを使用した。
(レポーター構造体へのハムスターINGAP5’−制御領域断片のクローニング)
INGAP5’−制御領域を構築するために、個々のPCR断片を、2つの隣接断片内に位置するユニークな制限部位のところで一緒に接合した。図6及び図7は、INGAP5’−制御領域を1つにつなぎ合わせるのに使用された方策の詳細を示す。断片8_3及び2_3は、ユニークなSphI部位で接合され;14_3及び8_3は、ユニークなBbsI部位で接合され;16_3及び14_3は、ユニークなPstI部位で接合された。ハムスターINGAP5’−制御領域DNAのヌクレオチド配列は、配列表の配列番号:1及び23に示されている。
(INGAPの発現を調節する因子をスクリーニングするためのアッセイシステム)
INGAPのプロモーター解析で、共通転写因子結合部位を含めた潜在的プロモーター近位調節部位がいくつか確認された;すなわち、cAMP応答エレメント(CRE)、AP−1、及びSTATである。プロモーター断片レポーター遺伝子構造体を、293T細胞に一時的にトランスフェクションし、分泌アルカリホスファターゼの共トランスフェクションを使用して、トランスフェクション効率を標準化した。
(5’−制御領域におけるPMA及びLIFを介した転写因子の結合のおよその場所の決定)
PMA開始型又はLIF開始型の転写因子結合のおよその場所をマッピングするために、ハムスターINGAP5’−制御領域の様々な断片を、pβGal−塩基にクローニングした。図8を参照のこと。レポーター構造体にクローニングされた断片は、2_3sP(配列番号:37)、2_3dP(配列番号:38)、2_3pP(配列番号:36)、14_3P(配列番号:34)、16_3P(配列番号:31)、又は19_3P(配列番号:23)であった。レポーター構造体をヒト細胞にトランスフェクションした。トランスフェクションから2日後、細胞を様々な濃度のPMA又はLIFで24時間処理した。使用されたPMAの濃度は、6ng/ml、17ng/ml、50ng/ml、100ng/ml、又は300ng/mlであった。使用されたLIFの濃度は、1ng/ml、10ng/ml、又は30ng/mlであった。プロモーター活性レベルを決定するために、β−ガラクトシダーゼの発光アッセイを用いてβ−ガラクトシダーゼ遺伝子産物の量を決定した。図10及び図11は、それぞれPMA及びLIF処理に関する結果を示す。PMA及びLIFの両方が細胞のレポーター構造体を活性化した。DNA接触部位の正確な場所は、より小さな断片のハムスターINGAP5’−制御領域をクローニングすることによって、また、部位指定突然変異又は欠失によって、さらに狭めることができる。
(INGAP遺伝子の発現増加(upregulation)のRNA解析)
INGAPのRNAレベルが、STATを通じてシグナルを発生するサイトカインによって刺激された後で増加するかどうか判定するために、ラットのアンフォクライン(amphocrine)膵臓細胞であるAR42JをIL−6(1000U/ml)で24時間処理した。当該技術分野において周知の技術、例えば、トライゾール(TRIzol)(登録商標)試薬を使用して、処理細胞及び未処理細胞から総RNAを抽出した。
Claims (10)
- 配列番号:2の単離核酸塩基配列。
- レポーター構造体であって、
a.検出可能な産物を符号化するヌクレオチド配列と、
b.検出可能な産物を符号化するヌクレオチド配列の5’末端部に連結された制御領域ヌクレオチド塩基配列と
を含み、前記制御領域ヌクレオチド塩基配列が、配列番号:2のヌクレオチド1〜3137から選択される1つ以上の領域で構成されるレポーター構造体。 - レポーター構造体であって、さらに、
a.前記制御領域ヌクレオチド配列と、検出可能な産物を符号化するヌクレオチド配列との間に存在する、プロモーターエレメントを含むことを特徴とする請求項3に記載のレポーター構造体。 - 前記制御領域ヌクレオチド塩基配列が、配列番号:1、2、23、32、35、37、28、24、25、26、27、29、30、31、33、34、38、及び36からなる群から選択されることを特徴とする請求項3又は4に記載のレポーター構造体。
- 前記プロモーターエレメントが、配列番号:2から選択されることを特徴とする請求項4に記載のレポーター構造体。
- 請求項1〜5のいずれか一項に記載のレポーター構造体を含むことを特徴とする宿主細胞。
- INGAPの発現を調節する作用因子の同定法であって、
a.請求項7に記載の宿主細胞を試験作用因子と接触させることと、
b.細胞内の検出可能なタンパク質又は核酸産物の発現を判定することと、
c.前記試験作用因子が細胞内で検出可能な産物の発現を調節する場合に、前記試験作用因子をINGAP発現のモジュレーターとして同定することと
を含む方法。 - INGAPの発現を調節する作用因子の生体外同定法であって、
a.前記ヌクレオチド配列の転写及び翻訳に十分な条件下で、請求項3又は4に記載のレポーター構造体を試験物質と接触させることと、
b.検出可能なタンパク質又は核酸産物の発現を判定することと、
c.前記試験物質が検出可能な産物の発現を調節する場合に、前記試験物質をINGAP発現のモジュレーターとして同定することと
を含む方法。 - INGAPの発現を調節する作用因子の生体外同定法であって、
a.請求項2に記載の核酸又はその断片を試験作用因子と接触させることと、
b.核酸への前記試験作用因子の結合を判定することと、
c.前記試験作用因子が核酸に結合する場合に、前記試験作用因子をINGAP発現の潜在的モジュレーターとして同定することと
を含む工程。 - INGAPの発現を必要とする哺乳類においてその発現を調節する方法であって、前記哺乳類においてINGAPの発現を刺激する有効量の因子を、哺乳類に投与することを含む方法。
Applications Claiming Priority (4)
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US34689802P | 2002-01-11 | 2002-01-11 | |
US36107302P | 2002-03-01 | 2002-03-01 | |
US38831502P | 2002-06-14 | 2002-06-14 | |
PCT/US2003/000707 WO2003060096A2 (en) | 2002-01-11 | 2003-01-10 | Assay for the detection of factors that modulate the expression of ingap |
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JP2005514930A true JP2005514930A (ja) | 2005-05-26 |
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JP2003560183A Pending JP2005514930A (ja) | 2002-01-11 | 2003-01-10 | Ingapの発現を調節する因子の検出アッセイ |
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US (3) | US7355024B2 (ja) |
EP (1) | EP1463517A4 (ja) |
JP (1) | JP2005514930A (ja) |
KR (2) | KR20070043057A (ja) |
CN (1) | CN1615150A (ja) |
BR (1) | BR0306784A (ja) |
CA (1) | CA2470359A1 (ja) |
IL (1) | IL162493A0 (ja) |
MA (1) | MA27241A1 (ja) |
MX (1) | MXPA04006708A (ja) |
NO (1) | NO20043330L (ja) |
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CN103305457B (zh) * | 2013-06-06 | 2015-07-08 | 浙江省医学科学院 | 一种体外扩增胰岛β细胞的方法 |
CN118165113A (zh) * | 2016-04-26 | 2024-06-11 | 科济生物医药(上海)有限公司 | 一种改善免疫应答细胞功能的方法 |
CN110906869A (zh) * | 2019-11-22 | 2020-03-24 | 深圳市太赫兹科技创新研究院有限公司 | 一种oct探头调节装置 |
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US5834590A (en) | 1995-02-22 | 1998-11-10 | Eastern Virginia Medical School Of The Medical College Of Hampton Roads | Ingap protein involved in pancreatic islet neogenesis |
EP0815129B1 (en) | 1995-02-22 | 2011-01-05 | Eastern Virginia Medical School of the Medical College of Hampton Roads | Ingap protein involved in pancreatic islet neogenesis |
US6090620A (en) * | 1995-12-29 | 2000-07-18 | University Of Washington | Genes and gene products related to Werner's syndrome |
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2003
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- 2003-01-10 CN CNA038021455A patent/CN1615150A/zh active Pending
- 2003-01-10 JP JP2003560183A patent/JP2005514930A/ja active Pending
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NO20043330L (no) | 2004-10-05 |
US7355024B2 (en) | 2008-04-08 |
US20030207301A1 (en) | 2003-11-06 |
KR20070043057A (ko) | 2007-04-24 |
PL371485A1 (en) | 2005-06-13 |
US20090156458A1 (en) | 2009-06-18 |
KR20040072700A (ko) | 2004-08-18 |
MA27241A1 (fr) | 2005-03-01 |
EP1463517A4 (en) | 2006-01-04 |
BR0306784A (pt) | 2005-04-26 |
WO2003060096A3 (en) | 2003-12-04 |
AU2003202273A1 (en) | 2003-07-30 |
EP1463517A2 (en) | 2004-10-06 |
KR100766759B1 (ko) | 2007-10-15 |
WO2003060096A2 (en) | 2003-07-24 |
IL162493A0 (en) | 2005-11-20 |
US20120058078A1 (en) | 2012-03-08 |
CN1615150A (zh) | 2005-05-11 |
CA2470359A1 (en) | 2003-07-24 |
MXPA04006708A (es) | 2005-03-31 |
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