JP4824731B2 - ヒト内因性レトロウイルスのエンベロープタンパク質の発現を検出する方法、並びに上記タンパク質をコードする遺伝子の使用 - Google Patents
ヒト内因性レトロウイルスのエンベロープタンパク質の発現を検出する方法、並びに上記タンパク質をコードする遺伝子の使用 Download PDFInfo
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Description
Skehel, J.J.等, PNAS, 79: 968-972 (1982) Fefferey S.及びRex Risser (Journal of Virology, 1993年1月, p. 67-74) Patrick J.W. Venables等, Virology, 211, 589-592 (1995) Nathalie de Parseval and Thierry Heidmann, Journal of Virology, Vol. 72, No. 4, pages 3442-3445 (1988)
− HERV-W内因性レトロウイルスのenv遺伝子によってコードされる;
− ヒトゲノムの第7染色体上に位置する一つのオープンリーディングフレームによってコードされる;
− 配列番号1の配列を含むポリペプチド配列、またはいずれかの一連の20アミノ酸について、配列番号1と少なくとも80%、好ましくは少なくとも90%、さらには少なくとも95%の同一性を示す配列を有する。好ましくは、配列番号1より成る。
− 上述のようなタンパク質またはポリペプチドをコードする、少なくとも一つの遺伝子または核酸、または遺伝子または核酸の断片と、宿主細胞におけるその発現に必要とされるエレメントとを含む発現ベクター;
− 本発明の少なくとも一つの発現ベクターを含む宿主細胞、並びに
− 本発明の少なくとも一つの発現ベクターまたは宿主細胞を含む、治療用または予防用の組成物。
細胞系:
TELCeB6系(Cosset等, Jounal of Virology, 69(12): 7430-7436 (1995))は、MoMLV(モロニー齧歯類白血病ウイルス)タイプのGag及びPolタンパク質を生産するように企図された発現プラスミドのトランスフェクション及びクローン選択の後の、TELac2系から由来する。TELac2系は元々、ヒト横紋筋肉腫細胞TE671(ATCC CRL 8805)から由来し、nlsLacZレトロウイルスレポーターベクターを発現する(Takeushi等, Jounal of Virology, 68(12): 8001-8007 (1994))。TELCeB6細胞による感染性レトロウイルス粒子の生産は、トランスフェクトされたエンベロープ発現ベクターに依存する。
pHCMVプラスミドを、env HERV-Wの発現のために使用した。FBASALF-ARlessプラスミドを、融合のためのポジティブコントロールとして使用した;それは細胞質内ペプチドp2-Rの最初のアミノ酸の前に停止コドンを導入することによって修飾された、両栄養性MLVエンベロープ糖タンパク質の高融合原性形態を生産する(Rein等, Jounal of Virology, 68(3): 1773-1781 (1994))。pHCMVプラスミド内でアンチセンス方向でクローン化されたenv HERV-Wを、ネガティブコントロールとして使用した。
エンベロープ糖タンパク質発現プラスミドを、リン酸カルシウム沈降によってTELCeB6細胞内にトランスフェクトする(Cosset等, Jounal of Virology, 69(10): 6314-6322 (1995))。Envを発現する集合したTELCeB6細胞を、トランスフェクション後の24時間PBS中の0.5%グルタルアルデヒドで固定する。次いでMay-Grunwald及びGiemsa溶液(MERCK)での染色を、供給者の推奨に従って実施する。それは核を紫に、細胞質を藤色に染色し、シンシチウムの視覚化を可能にする。
エンベロープのLTRの結合と選択的増幅
第7染色体に位置するエンベロープのコード領域と会合5' LTR U3プロモーター領域の多型の研究のため、10kb断片に特異的な増幅を、特異的プライマーのペアを使用して実施する。実際、HERV-Wファミリーは多くの非コードコピー、特に著しい数のLTRを含むことを考慮して、このストラテジーは、排他的に第7染色体の上流に位置するenv領域とそのプロモーター配列(5' LTR)を特異的且つ結合的に増幅することが可能である。このため、第7染色体上の5' LTRの上流に位置する特異的配列にハイブリダイズするプライマーU6198と、この同じ染色体上の3' LTR U5領域と隣接する細胞遺伝子にオーバーラップする態様でハイブリダイズするプライマーL6186の使用が実施される。長距離PCR(またはLD-PCR)を、以下の条件の下で実施する:94℃で1×5分、10×(94℃で10秒、55℃で30秒、68℃で8分)、25×(94℃で10秒、55℃で30秒、68℃で8分+10秒/サイクル)、68℃で1×7分、増幅バッファー(50mM Tris HCl, pH9.0, 25℃, 15mM (NH4)2SO4, 0.1% Triton X-100);1.5mM MgCl2, 0.25mMの各dNTP、330nMの各プライマー(U6198とL6186), 1UのDNAポリメラーゼ及び200ngのマトリックス(ゲノムDNA)、最終容量50ml。
多型の存在または不存在を客観化するために、増幅的PCR産物を各種の方法で分析でき、特にSSCP(一本鎖構造多型)法による配列決定または分析は、250bpの平均サイズを有する二つの短い配列間の少なくとも一つのミューテーションの存在を示す頃が可能である。
ヒト細胞において発現されることが周知のレセプター、即ちPiT-2(両栄養性MLVに対するレセプター)、PiT-1(GALV−テナガザル白血病ウイルス、及びFeLV-B−ネコ白血病ウイルスタイプBに対するレセプター)及びhTABO(タイプD哺乳動物レトロウイルスに対するレセプター、RD114レトロウイルスによっても認識される)の中で、HERV-Wのエンベロープ糖タンパク質によって認識されるレセプターを測定するために、妨害試験を実施した。このため、TELCeB6細胞を、HERV-Wエンベロープをコードする発現プラスミド、HERV-Wエンベロープをコードする遺伝子に対するアンチセンスメッセンジャーRNAを発現する発現プラスミド、またはARlessと称される両栄養性MLVエンベロープの超融合原性変異体をコードする発現プラスミドのそれぞれでトランスフェクトした。「プロデューサー細胞」と称されるこれらの細胞を、HERV-Wエンベロープを発現し、且つGALVのエンベロープ、両栄養性MLVのエンベロープ、またはRD114のエンベロープを安定に発現する、「インディケーター細胞」と称されるヒト細胞と共培養した。これらの細胞でのこれらの多様なエンベロープ糖タンパク質の発現は、対応するレセプターを認識してそれらをブロックすることが可能であり、それ故それらにタイプするが、「プロデューサー」細胞の表面で外因的に発現されるレトロウイルスエンベロープ糖タンパク質と相互作用する能力を減少することが可能である。かくして、もし共培養による融合に対する試験の間で、全ての3種の潜在的なレセプターが十分接近可能である元となるインディケーター細胞と比較して、これらのレセプターの一つをブロックするインディケーター細胞タイプについてのシンシチウムの形成の現象が観察されたならば、プロデューサー細胞で発現されるエンベロープによって認識されるレセプターの性質は、それらから推定されるであろう。二日間の共培養の後、細胞を固定化して染色し、融合インデックスを測定する、その結果が、以下の表4に示される。
Controlは、この細胞において発現されるエンベロープタンパク質が存在しないことを示す。
細胞質成分によるEnv HERV-Wの融合原性活性のコントロール
この糖タンパク質の融合原性活性におけるEnv HERV-Wの細胞質成分の関与を、以下の組換え糖タンパク質の構築と特徴付けによって測定する:
Claims (13)
- プロデューサー細胞のポリペプチドと、インディケーター細胞の細胞表面レセプターとの間の相互作用が、ex vivoまたはin vitroで生ずるかを検出する方法であって、
前記ポリペプチドが配列番号1からなる配列を有し、
前記インディケーター細胞を前記プロデューサー細胞と接触させる工程;
前記プロデューサー細胞と前記インディケーター細胞との間のシンシチウムの形成、または前記プロデューサー細胞と前記インディケーター細胞との間のシンシチウムの非形成を観察する工程;及び
前記シンシチウムの形成を、前記プロデューサー細胞のポリペプチドと、前記インディケーター細胞の中性アミノ酸トランスポーター細胞表面レセプターとの間の相互作用の発生と関連付けし、または前記シンシチウムの非形成を、前記プロデューサー細胞のポリペプチドと、前記インディケーター細胞の中性アミノ酸トランスポーター細胞表面レセプターとの間の相互作用の欠如と関連付けする工程
を含み、
前記ポリペプチドが、ヒト内因性レトロウイルスのエンベロープタンパク質のcytドメインからなり、前記細胞表面レセプターが、タイプD哺乳動物レトロウイルスに対するhATB O レセプターである、方法。 - 前記エンベロープタンパク質がHERV-Wのenvタンパク質であり、配列番号1の470-538断片からなるcytドメインを有する、請求項1に記載の方法。
- 前記インディケーター細胞が、ガン細胞である、請求項1に記載の方法。
- 前記インディケーター細胞が、ヒト起源の細胞である、請求項1に記載の方法。
- 前記シンシチウムの形成を、前記プロデューサー細胞の表面での前記ポリペプチドの発現と関連付けする工程を含む、請求項1に記載の方法。
- 前記プロデューサー細胞が、骨細胞、筋細胞、胎盤細胞、内皮細胞、上皮細胞、グリア細胞、腫瘍細胞 及び腫瘍細胞系から由来する細胞から選択される、請求項1に記載の方法。
- 前記プロデューサー細胞が、血管から由来する細胞である、請求項1に記載の方法。
- 前記プロデューサー細胞を、医薬的物質、薬剤、または遺伝子/プロドラッグ系と接触させ、前記医薬的物質、薬剤、または遺伝子/プロドラッグ系の、前記シンシチウムの形成または非形成に対する効果を測定することによる、前記方法によって前記医薬的物質、薬剤、または遺伝子/プロドラッグ系の有効性を試験し、または前記医薬的物質、薬剤、または遺伝子/プロドラッグ系を選択する工程を更に含む、請求項1に記載の方法。
- 前記ポリペプチドをコードする遺伝子と、前記ポリペプチドを発現するためのプロモーターとを含むベクターで細胞をトランスフェクトすることによって、前記プロデューサー細胞を得る工程を更に含む、請求項1に記載の方法。
- 前記プロモーターが異種プロモーターである、請求項9に記載の方法。
- 前記プロモーターが自己プロモーターである、請求項9に記載の方法。
- 前記接触させる工程が中性pHで実施される、請求項1に記載の方法。
- 前記プロデューサー細胞のポリペプチドと、前記インディケーター細胞の中性アミノ酸トランスポーター細胞表面レセプターとの間の相互作用の発生に基づいて、医薬的物質、薬剤、または遺伝子/プロドラッグ系の候補を選択する工程を更に含む、請求項1に記載の方法。
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FR99/11793 | 1999-09-15 | ||
FR9911793A FR2797889A1 (fr) | 1999-09-01 | 1999-09-15 | Procede de detection de l'expression d'une proteine d'enveloppe d'un retrovirus endogene humain et utilisations d'un gene codant pour cette proteine |
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US11129892B1 (en) | 2020-05-18 | 2021-09-28 | Vnv Newco Inc. | Vaccine compositions comprising endogenous Gag polypeptides |
US11447527B2 (en) | 2018-09-18 | 2022-09-20 | Vnv Newco Inc. | Endogenous Gag-based capsids and uses thereof |
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WO2002004678A2 (en) * | 2000-07-07 | 2002-01-17 | Genetics Institute, Llc. | Methods and compositions for diagnosing and treating preeclampsia and gestational trophoblast disorders |
ATE551353T1 (de) | 2003-04-04 | 2012-04-15 | Centre Nat Rech Scient | Protein mit fusogener wirkung, nukleinsäuresequenzen, die für dieses protein codieren und pharmazeutische zusammensetzungen, die dieses enthalten |
FR2865403B1 (fr) * | 2004-01-23 | 2009-06-12 | Biomerieux Sa | Composition pour le traitement d'une pathologie associee a la msrv/herv-w |
EP1871391B1 (en) * | 2005-03-30 | 2011-12-28 | Viroxis | Endogenous retrovirus and proteins encoded by env as a target for cancer treatment |
WO2009088256A2 (ko) | 2008-01-09 | 2009-07-16 | Konkuk University Industrial Cooperation Corp | 배큘로바이러스-기반 백신 |
EP3235828A1 (en) | 2016-04-21 | 2017-10-25 | Genethon | Stable pseudotyped lentiviral particles and uses thereof |
JP2021501137A (ja) | 2017-10-20 | 2021-01-14 | ジェネトン | 再生筋組織への標的化薬物及び遺伝子送達のためのシンシチンの使用 |
WO2019077150A1 (en) | 2017-10-20 | 2019-04-25 | Genethon | USE OF SYNCYTIN TO TARGET A MEDICINAL PRODUCT AND GENE ADMINISTRATION TO PULMONARY TISSUE |
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FR2663040B1 (fr) | 1990-06-11 | 1995-09-15 | Bio Merieux | Procede de detection d'une sequence nucleotidique selon la technique d'hybridation sandwich. |
US6312921B1 (en) * | 1996-07-26 | 2001-11-06 | Genetics Institute, Inc. | Secreted proteins and polynucleotides encoding them |
EP1000158B1 (fr) * | 1997-07-07 | 2006-11-22 | Bio Merieux | Sequences retroviraux endogenes, associees a des maladies auto-immunes et/ou a des perturbations de la grossesse |
JP2002515234A (ja) * | 1998-05-18 | 2002-05-28 | ジェネティックス・インスチチュート・インコーポレーテッド | 分泌蛋白およびそれらをコードするポリヌクレオチド |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11447527B2 (en) | 2018-09-18 | 2022-09-20 | Vnv Newco Inc. | Endogenous Gag-based capsids and uses thereof |
US11505578B2 (en) | 2018-09-18 | 2022-11-22 | Vnv Newco Inc. | Endogenous Gag-based capsids and uses thereof |
US11129892B1 (en) | 2020-05-18 | 2021-09-28 | Vnv Newco Inc. | Vaccine compositions comprising endogenous Gag polypeptides |
Also Published As
Publication number | Publication date |
---|---|
FR2797889A1 (fr) | 2001-03-02 |
EP1212359A1 (fr) | 2002-06-12 |
US7442550B1 (en) | 2008-10-28 |
ES2444649T3 (es) | 2014-02-26 |
JP4283475B2 (ja) | 2009-06-24 |
CA2383877C (fr) | 2014-04-15 |
JP2003510032A (ja) | 2003-03-18 |
CA2383877A1 (fr) | 2001-03-08 |
WO2001016171A1 (fr) | 2001-03-08 |
ATE531726T1 (de) | 2011-11-15 |
EP1212359B1 (fr) | 2011-11-02 |
ES2376726T3 (es) | 2012-03-16 |
EP2385058B1 (fr) | 2013-11-06 |
EP2385058A1 (fr) | 2011-11-09 |
AU7297100A (en) | 2001-03-26 |
JP2009072194A (ja) | 2009-04-09 |
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