JP5934805B2 - シュードモナスの生物学的防除方法 - Google Patents
シュードモナスの生物学的防除方法 Download PDFInfo
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N63/00—Biocides, pest repellants or attractants, or plant growth regulators containing microorganisms, viruses, microbial fungi, animals or substances produced by, or obtained from, microorganisms, viruses, microbial fungi or animals, e.g. enzymes or fermentates
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/10—Protozoa; Culture media therefor
- C12N1/105—Protozoal isolates
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12R—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES C12C - C12Q, RELATING TO MICROORGANISMS
- C12R2001/00—Microorganisms ; Processes using microorganisms
- C12R2001/90—Protozoa ; Processes using protozoa
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- Engineering & Computer Science (AREA)
- Zoology (AREA)
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- Biotechnology (AREA)
- Virology (AREA)
- Microbiology (AREA)
- Plant Pathology (AREA)
- Pest Control & Pesticides (AREA)
- Dentistry (AREA)
- Agronomy & Crop Science (AREA)
- Environmental Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Genetics & Genomics (AREA)
- Organic Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Tropical Medicine & Parasitology (AREA)
- Biomedical Technology (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- External Artificial Organs (AREA)
Description
1.1.用いた株
シュードモナス(Pseudomonas):用いられた菌株は、CL5210菌株(Oxoid, France)である。
・ハルトマンネラベルミフォーミス(Hartomannellavermiformis)
・アカントアメーバカステラーニ(Acanthamoeba castellanii)(ATCCに30010番で寄託されている株)
・ウィラーティアマグナ(Willaeriamagna)(ATCCに寄託番号PTA 7824及びPTA 7825で寄託されている株)。
カゼイン(Merck 1.02244.010) 10g
Na2HPO4 1.325g
KH2PO4 0.8g
グルコース 2.5g
酵母エキス(Difco 0127-17-9) 5g
蒸留水 900ml
ウシ胎児血清 100ml。
1.2.1.接種菌の調製
無菌蒸留水とシュードモナスとの懸濁液は、550nmにおいて吸光度単位が1である、すなわち109CFU(colony-forming units)/mlとなるように、TSAで2日間培養されたものから調製される。
1.2.2.単一アメーバとの共培養の実施
共培養は、オートクレーブによる無菌水を3ml含む細胞培養チューブで行われる(Falcon3033)。予めMalassez血球計算盤でカウントされた無菌のアメーバ懸濁液から、1×105アメーバ/mlの割合でそのチューブへの播種が行われる。シュードモナスによるアメーバへの寄生は、シュードモナス/アメーバ比が10となる、すなわち培養培地において1×106細菌/mlとなるようにして行われる。寄生後すぐに、共培養チューブは、アメーバと細菌との接触を促進するために低速(760gで10分)で遠心機にかけられる。10分後、そのチューブは、手動で再懸濁され、30℃のインキュベータ内において傾けられた状態で培養される。
ウィラーティアは、TSA上に播種されたシュードモナスの層上に堆積された。その寒天培地は、寒天培地の表面に細菌の膜が生じるように、30℃で24時間置かれる。その後、1×105のアメーバ(アカントアメーバカステラーニ、ハルトマネラベルミフォーミス又はウィラーティアマグナ)は、寒天培地の中央に播かれ、30℃で24時間置かれる。その後、寒天培地は、そこで生じ得る細菌層溶解プラークの形成を検出するために光学顕微鏡(倍率×400)で観察される。
2.1.ウィラーティアマグナはシュードモナス抵抗性を示す
試験された種々のアメーバ種の生存におけるシュードモナスの影響は、トリパンブルー色素排除試験により測定された。アカントアメーバカステラーニを細菌と共培養した後、このアメーバ種において、共培養の3時間後の生存率が30%にまで低下するといった大きい細胞毒性効果が見られる(図1参照)。逆に、この現象は、ウィラーティアマグナをシュードモナスと共培養したときには見られず、9時間培養しても100%に近い生存率が維持されている(図1)。ウィラーティアマグナと同様に、自由生活ハルトマネラベルミフォーミスアメーバでは、トリパンブルー色素排除試験により測定された生存率に関して減少が見られない(図1)。これら全ての観察(シュードモナスにより誘導される被嚢形成及び細胞毒性が無い)は、ウィラーティアマグナ及びハルトマネラベルミフォーミスが、他のアメーバ種であるアカントアメーバカステラーニとは反対に、シュードモナスに抵抗する能力を示すことを証明する。
ハルトマンネラ及びアカントアメーバ属に属するアメーバの存在下で行われるシュードモナスの共培養の結果は、6時間後において細菌濃度の増加が見られるため(図2参照)、それら2つのアメーバ属の存在下における細菌のかなりの増殖を証明する。反対に(全く同一の条件で行われるにもかかわらず)、シュードモナスのみを含むコントロールと比較して、ウィラーティアマグナアメーバの存在下においては、検出可能なシュードモナスの約1logの減少が見られる(図2及び図3参照)。測定されるシュードモナスの濃度の減少は、シュードモナスに対するウィラーティアマグナの強力な捕食効果を証明する。
1. Abd H,Wretlind B, Saeed A, Idsund E, Hultenby K, and Sandstrom G. Pseudomonasaeruginosa utilises its type III secretion system to kill the free-livingamoeba Acanthamoeba castellanii. J Eukaryot Microbiol 55: -243.2008.
2. AshishA, Shaw M, Winstanley C, Ledson MJ, and Walshaw MJ. Increasing resistance ofthe Liverpool Epidemic Strain (LES) of Pseudomonas aeruginosa (Psa) toantibiotics in cystic fibrosis (CF)-A cause for concern? J Cyst Fibros 2011.
3. BodennecJ, Dey R, and Pernin P. Novel method for biologically combating theproliferation of Legionella pneumophila, and novel disinfecting agentcontaining amoebic protozoa of the Willaertia genus. edited by University CBL.France: 2010.
4. BodeyGP, Bolivar R, Fainstein V, and Jadeja L. Infections caused by Pseudomonasaeruginosa. Rev Infect Dis 5: -313.1983.
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6. DaviesB, Chattings LS, and Edwards SW. Superoxide generation during phagocytosis byAcanthamoeba castellanii: similarities to the respiratory burst of immune phagocytes.J Gen Microbiol 137: -710.1991.
7. FernandezM, Conde S, de la Torre J, Molina-Santiago C, Ramos JL, and Duque E. Mechanismsof resistance to chloramphenicol by Pseudomonas putida KT2440. AntimicrobAgents Chemother 2011.
8. Fones H,and Preston GM. Reactive oxygen and oxydative stress tolerance in plantpathogenic pseudomonas. FEMS Microbiol Lett doi:10.1111/j.1574-6968.2011.02449.x.[Epub ahead of print]: 2011.
9. Hahn MW,Moore ER, and Hofle MG. Role of Microcolony Formation in the ProtistanGrazing Defense of the Aquatic Bacterium Pseudomonas sp. MWH1. Microb Ecol 39:175-185, 2000.
10. IrazoquiJE, Troemel ER, Feinbaum RL, Luhachack LG, Cezairliyan BO, and Ausubel FM.Distinct pathogenesis and host responses during infection of C. elegans by P. aeruginosaand S. aureus. PloS Pathog 6: e1000982, 2010.
11. JuliaAG, and Morgan BM. The effects of selected strains of pigmented microorganismson small free-living amoeba. Can J Microbiol 10: -584.1964.
12. Matz C,Bergfeld T, Rice SA, and Kjelleberg S. Microcolonies, quorum sensing andcytotoxicity determine the survival of Pseudomonas aeruginosa biofilms exposedto protozoan grazing. Environ Microbiol 6: -226.2004.
13. Matz C,Moreno AM, Alhede M, Manefield M, Hauser AR, Givskov M, and Kjelleberg S. Pseudomonasaeruginosa uses type III secretion system to kill biofilm-associated amoebae.Isme J 2: 843-852.2008.
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Claims (6)
- ATCCに寄託番号PTA 7824で寄託された株、又はATCCに寄託番号PTA7825で寄託された株に相当するウィラーティア(Willaertia)属のアメーバ性原生動物を対象に接触させることを特徴とし、ヒト又は動物の体に適用される治療方法を除く、シュードモナス(Pseudomonas)の増殖を抑制する方法。
- 気体若しくは液体の流れ、又は固体表面が、ウィラーティアマグナ(willaertia magna)種のアメーバ性原生動物を用いて処理されることを特徴とする請求項1に記載の方法。
- 下水若しくは工業用水の配水管網、工業プラントの冷却回路、空調ネットワーク又は工業製品の表面の消毒のために行われることを特徴とする請求項1に記載の方法。
- 水管内、又はヒト若しくは動物の食品に接触する可能性がある表面におけるバイオフィルムの形成を抑制するために行われることを特徴とする請求項1に記載の方法。
- 配管又はネットワーク内を循環する水又は液体中のシュードモナス(Pseudomonas)の殺菌のために、ATCCに寄託番号PTA7824で寄託された株、又はATCCに寄託番号PTA7825で寄託された株に相当する原生動物を前記水又は液体に加えることを含むシュードモナスの殺菌方法。
- 前記原生動物が水溶液又は懸濁液の形態で用いられることを特徴とする請求項5に記載の方法。
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FR1162098A FR2984081A1 (fr) | 2011-12-20 | 2011-12-20 | Procede de lutte biologique contre les pseudomonas |
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PCT/EP2012/076451 WO2013092897A1 (fr) | 2011-12-20 | 2012-12-20 | Procede de lutte biologique contre les pseudomonas |
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JP6404072B2 (ja) * | 2014-10-03 | 2018-10-10 | 株式会社シード | アカントアメーバの消毒評価方法 |
JP6506002B2 (ja) * | 2014-10-03 | 2019-04-24 | 株式会社シード | アカントアメーバ用培地 |
US11202806B2 (en) | 2016-10-18 | 2021-12-21 | Viscus Biologics, Llc | Amoeba therapeutic dressings, biomaterials, and solutions |
FR3070004B1 (fr) * | 2017-08-10 | 2020-12-25 | Amoeba | Utilisation therapeutique ou non-therapeutique de protozoaires du genre willaertia comme fongistatique et/ou fongicide |
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PL2809161T3 (pl) | 2016-08-31 |
HUE027930T2 (en) | 2016-11-28 |
EP2809161A1 (fr) | 2014-12-10 |
RU2014129836A (ru) | 2016-02-10 |
CY1117588T1 (el) | 2017-04-26 |
BR112014012966A2 (pt) | 2017-06-13 |
WO2013092897A9 (fr) | 2013-09-19 |
ES2570386T3 (es) | 2016-05-18 |
FR2984081A1 (fr) | 2013-06-21 |
DK2809161T3 (en) | 2016-05-09 |
RU2575999C2 (ru) | 2016-02-27 |
EP2809161B1 (fr) | 2016-02-03 |
SI2809161T1 (sl) | 2016-10-28 |
CN104302182A (zh) | 2015-01-21 |
JP2015508391A (ja) | 2015-03-19 |
US20140322167A1 (en) | 2014-10-30 |
CN104302182B (zh) | 2016-10-12 |
BR112014012966B1 (pt) | 2019-07-02 |
RS54777B1 (sr) | 2016-10-31 |
WO2013092897A1 (fr) | 2013-06-27 |
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