JP2017512487A - 新たなバクテリオファージ及びこれを含む組成物 - Google Patents
新たなバクテリオファージ及びこれを含む組成物 Download PDFInfo
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- JP2017512487A JP2017512487A JP2016561675A JP2016561675A JP2017512487A JP 2017512487 A JP2017512487 A JP 2017512487A JP 2016561675 A JP2016561675 A JP 2016561675A JP 2016561675 A JP2016561675 A JP 2016561675A JP 2017512487 A JP2017512487 A JP 2017512487A
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- bacteriophage
- φcj28
- bacteriophage φcj28
- kccm11466p
- coli
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Abstract
Description
バクテリオファージのスクリーニング及び単一バクテリオファージの分離
韓国忠清道洪城郡廣川地域のサムファウォンジョン農場地域の養豚糞便及び環境サンプルから得た試料50mlを4,000rpmで10分間遠心分離した後、その上澄液を0.45μmフィルターで濾過して試料液を用意し、これを利用してソフトアガーオーバーレイ(soft agar overlay)方法を行った。前記ソフトアガーオーバーレイ方法は、トップアガー(top−agar、0.7%の寒天を利用して固体培地の上に貼り付けたもの)で成長した宿主細胞を利用してバクテリオファージが溶菌することを観察する方法をいう。
バクテリオファージの大量培養及び精製
実施例1−1で得た前記バクテリオファージを腸管毒素性大腸菌(2618)を利用して大量培養し、これからバクテリオファージを精製した。
ΦCJ28の形態観察
前記実施例1で精製したバクテリオファージΦCJ28を0.01%のゼラチン溶液に希釈し、2.5%グルタルアルデヒド(glutaraldehyde)溶液で固定した。これを炭素コーティングした雲母板(carbon−coated mica plate (ca. 2.5mm×2.5mm))に滴加し10分間適応させた後、滅菌蒸留水で洗浄した。炭素被膜(carbon film)をカッパーグリッド(copper grid)に挟んで2%ウラニルアセテート(uranyl acetate)で60秒間染色して乾燥した後、透過電子顕微鏡(JEM−1011、80kV、倍率×200,000)で検鏡した(図1)。
ΦCJ28の全ゲノムDNAのサイズ分析
前記実施例1で精製したバクテリオファージΦCJ28からゲノムDNAを抽出した。
ΦCJ28のタンパク質パターンの分析
1010pfu/mlタイター(titer)の精製されたバクテリオファージΦCJ28溶液15μlと5×SDS試料溶液3μlを混合し5分間沸騰させた後、12%SDS−PAGEを行った(図3)。
ΦCJ28の遺伝的特性の分析
前記実施例1で精製されたバクテリオファージΦCJ28の遺伝子的特性を調べるため、バクテリオファージΦCJ28のDNAを遺伝子分析機器であるFLXチタニウムシークエンサー(titanium sequencer)(Roche)を用いて分析した。株式会社マクロジェン(Macrogen Inc.)でGSとデ・ノボアセンブリソフトウェア(de novo assembler software)(Roche)を用いて遺伝子の組換えを行った。オープンリーディングフレーム(open reading frame)はGeneMArk.hmm、Glimmer v3.02及びFGENESBソフトウェアを用いて行われた。BLASTPとインタープロスキャン(InterProScan)プログラムを用いてオープンリーディングフレームの名称を命名(annotation)した。
pHによるΦCJ28の安定性の調査
バクテリオファージΦCJ28が胃腸内の条件と同様に低いpHで安定性を保つことができるかを確認するため、様々なpH範囲(pH2.0、3.0、4.0、5.0)で安定性の調査実験を行った。
温度によるΦCJ28の安定性の調査
バクテリオファージの製品剤形の中で飼料添加剤として利用した場合、バクテリオファージの剤形過程において熱が発生する可能性があり、熱に対する安定性確認するため下記の実験を行った。
野生分離株の腸管毒素性大腸菌に対するΦCJ28の感染範囲の調査
実験に用いられた腸管毒素性大腸菌(2618)以外に、ソウル大学校獣医科大学、建国大学校獣医科大学及び検疫院で分離した野生分離株の腸管毒素性大腸菌99株に対してバクテリオファージΦCJ28の溶菌活性有無を確認した。この分離株はF−血清型が、F4タイプ(type)37株、F5タイプ30株、F6タイプ7株、F18タイプ20株、その他の菌株5株である。
Claims (12)
- 腸管毒素性大腸菌(Enterotoxigenic Escherichia coli)に特異的な死滅能を有する、 バクテリオファージΦCJ28(KCCM11466P)。
- 請求項1の前記バクテリオファージΦCJ28(KCCM11466P)を有効成分として含む、腸管毒素性大腸菌による感染性疾病の予防又は治療用の組成物。
- 前記感染性疾病は、大腸菌症であることを特徴とする、請求項2に記載の腸管毒素性大腸菌による感染性疾病の予防又は治療用の組成物。
- 請求項1の前記バクテリオファージΦCJ28(KCCM11466P)を有効成分として含む、抗生剤。
- 請求項1の前記バクテリオファージΦCJ28(KCCM11466P)を有効成分として含む、飼料添加剤。
- 請求項5の飼料添加剤を含む、飼料。
- 請求項1の前記バクテリオファージΦCJ28(KCCM11466P)を有効成分として含む、飲用水添加剤。
- 請求項7の飲用水添加剤を含む、飲用水。
- 請求項1の前記バクテリオファージΦCJ28(KCCM11466P)を有効成分として含む、消毒剤。
- 請求項1の前記バクテリオファージΦCJ28(KCCM11466P)を有効成分として含む、洗浄剤。
- 請求項1の前記バクテリオファージΦCJ28(KCCM11466P)又は請求項2の前記組成物を、人間以外の動物に投与する段階を含む、腸管毒素性大腸菌による感染性疾病の予防又は治療方法。
- 前記感染性疾病は大腸菌症であることを特徴とする、請求項11に記載の腸管毒素性大腸菌による感染性疾病の予防又は治療方法。
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KR101381795B1 (ko) * | 2013-02-27 | 2014-04-07 | 씨제이제일제당 (주) | 신규 박테리오파지 및 이를 포함하는 항균 조성물 |
KR101381793B1 (ko) | 2013-02-27 | 2014-04-07 | 씨제이제일제당 (주) | 신규 박테리오파지 및 이를 포함하는 항균 조성물 |
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Non-Patent Citations (2)
Title |
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CHA S.B. ET AL., J. VET. MED. SCI., vol. 74(8)(2012), JPN6016020246, pages 1037 - 1039 * |
JAMALLUDEEN N. ET AL., VETERINARY MICROBIOLOGY, vol. 124(2007), JPN6016020240, pages 47 - 57 * |
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US20170037380A1 (en) | 2017-02-09 |
CN107109373B (zh) | 2020-09-22 |
US20200190483A1 (en) | 2020-06-18 |
EP3130669A1 (en) | 2017-02-15 |
CN107109373A (zh) | 2017-08-29 |
PH12016501999A1 (en) | 2017-01-09 |
ES2732368T3 (es) | 2019-11-22 |
EP3130669A4 (en) | 2017-12-13 |
US10577590B2 (en) | 2020-03-03 |
PL3130669T3 (pl) | 2019-10-31 |
KR101590108B1 (ko) | 2016-01-29 |
KR20150117445A (ko) | 2015-10-20 |
WO2015156509A1 (ko) | 2015-10-15 |
EP3130669B1 (en) | 2019-05-08 |
DK3130669T3 (da) | 2019-08-12 |
BR112016023456A2 (pt) | 2017-10-17 |
US11785948B2 (en) | 2023-10-17 |
JP6324536B2 (ja) | 2018-05-16 |
PH12016501999B1 (en) | 2017-01-09 |
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