JP7320353B2 - 家禽性別を非破壊卵内決定するための方法およびシステム - Google Patents
家禽性別を非破壊卵内決定するための方法およびシステム Download PDFInfo
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Classifications
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/483—Physical analysis of biological material
- G01N33/4833—Physical analysis of biological material of solid biological material, e.g. tissue samples, cell cultures
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- G01N30/02—Column chromatography
- G01N30/88—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86
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Description
(a)胚を含む卵に関連する物質の試料を得ること、および
(b)胚の特徴を示す試料中の少なくとも第1のバイオマーカーの存在および濃度に関するスコア値を測定すること、および
(c)(b)で得られたスコア値および量に閾値を適用し、バイオマーカーの存在および濃度に関連する胚の特徴を特定することを含み、
少なくとも第1のバイオマーカーが、140から190g/モルまでの範囲の分子量を有するアミノ化合物を含み、バイオマーカーの存在および濃度が、胚が雄成体または雌成体へと発育する可能性に相関する方法を提供することである。
3-[(2-ヒドロキシエチル)スルファニル]-N-メチルプロパンアミド、プロピル2-アミノ-3-スルファニルプロパノアート、2-(メチルアミノ)-4-(メチルスルファニル)ブタン酸、2-[(2-アミノエチル)スルファニル]-2-メチルプロパン酸、3-[(2-アミノエチル)スルファニル]-2-メチルプロパン酸、3-[(2-アミノエチル)スルファニル]ブタン酸、4-[(2-アミノエチル)スルファニル]ブタン酸、2-アミノ-3-(プロピルスルファニル)プロパン酸、2-アミノ-3-(プロパン-2-イルスルファニル)プロパン酸、および3-[(2-アミノエチル)スルファニル]ブタン酸などのアミノ酸エステルから選択することができる。化合物または異性体は、ラセミであってもよく、またはエナンチオマーもしくは立体異性体を好適な比および量で含んでいてもよい。
(i)個々の卵から試料を採取するための試料採取システム、
(ii)スペクトルを収集するための分析システム、
(iii)分析システムにより分析された1つまたは複数の試料に由来する1つまたは複数のバイオマーカーに関連するシグナルをプログラムに基づいて特定する性別および/または成育能識別機能であり、シグナルを、試料データに関して収集された対照スペクトルの保存されているライブラリーとおよび/または内部基準物質と比較して胚特徴を特定することを含む分析をさらに実施する成育能識別機能、ならびに
(iv)1つまたは複数の胚特徴情報を、試料および/または分析した卵と結び付ける出力手段を含むシステムに関する。
試料発送および保管
バイオマーカー発見のために、複数の分析的代謝物質プロファイリングプラットフォームを使用した。それらは、生体アミン、陰極性脂質、非標的グローバルプロファイリング、およびGC-MSだった。
アリコートする前に、試料を4℃で一晩解凍した。試料をボルテックスし、以下の通り手作業でアリコートした。アミンプロファイリング用に5μL、極性陰性脂質プロファイリング用に50μL、およびGC-MS(糖化合物分析)用に100μL。各試料から等量を取り、その後よく混合することにより、品質管理(QC)プールを生成した。
発見局面では、試料を無作為化し、アミン測定用に2つのバッチへと分配した。陰性脂質およびグローバルなプロファイリングの場合、試料を1つのバッチで分析した。7試料毎に重複試料を選択した。較正系、QC、およびブランクも含まれていた。10試料毎にQCを分析した。それらを使用して、データ品質を評価し、機器応答を補正した。ブランクを使用して、研究試料からバックグラウンドレベルを差し引いた。
言及されている装置、補給品、およびソフトウェアはすべて、別様の指示がない限り、Waters社(Etten-Leur、オランダ)からのものである。Waters社からのものを適用したAccQタグ誘導体化戦略が使用されるアミンプラットフォームは、アミノ酸および生体アミンをカバーする。手短に言えば、尿膜腔液試料(各5μL)を、内部標準溶液でスパイクし(表1)、その後MeOH(Actu-All Chemicals社)除タンパク質を行った。上清(10.000rpm、10℃、10分間)を、真空条件下で乾燥した。残留物を、6-アミノキノリル-N-ヒドロキシサクシニミジルカルバマート(AQC)試薬を有するホウ酸緩衝液(pH8.5)に再構成した。誘導体化反応を、10μLの20%ギ酸(Acros Organics社)で中和した。上清(10.000rpm、10℃、10分間)をバイアルに移し、UPLC-MS/MSシステムへの注入(1μL)まで、冷却(10℃)オートサンプラートレーに入れておいた。
獲得したデータを評価し、帰属させたMRMピークを、TargetLynxソフトウェアを使用して統合した。適切な内部標準物質を使用してMRMピークを正規化し、アミノ酸の分析には、それらの13C15N標識類似体を使用し、他のアミンには、最も近くに溶出した内部標準物質を使用した。ブランク試料を使用して、バックグラウンドを補正した。自己開発したアルゴリズムを、プールしたQC試料を使用して適用し、質量分析計の感度の変化をバッチにわたって補正した。
上記に示されている試料採取に供され、雄または雌とみなされた一連の25個の卵は、試験を、市販の孵卵装置および典型的な孵卵条件を使用した孵化へと進めた。幼体はすべて効果的に卵から出現し、試料採取の成育能を示した。孵化したヒナは、完全に雄の集団または完全に雌の集団のいずれかだった。
[実施例2]
揮発物および固相マイクロ抽出(SPME)を使用した非侵襲的決定
揮発性試料収集は、アルミニウムホイルおよび金属蓋で密封されたガラスジャーに単一の卵を移すことにより実施した。その後、ジャーを加温板に置いて、ジャー内部の温度を37℃に維持した。ジャー内の卵を15分間静置して、ジャーの上部空間を平衡状態に到達させた。回収ファイバー材料を、製造業者の説明書に従って使用前に前処理した。その後、ファイバーを挿入し、50分間にわたって抽出を実行した。抽出後、ファイバーを、ガスクロマトグラフインジェクターに5分間にわたって導入し、スプリットレスモードで250℃にて分析物を離脱させた。揮発物収集後直ちに、卵を孵卵器に戻した。空のジャーに対してSPMEを行うことによりブランクを製作し、分析前にファイバー前処理を実施して、ピークの非存在およびSPME手順の良好な品質を保証した。
Claims (19)
- ガルス・ガルス・ドメスティクス胚の特徴を卵内で非破壊的に特定するための方法であって、
(a)前記胚を含む卵に関連する物質の試料を得ること、および
(b)前記胚の特徴を示す前記試料中の少なくとも第1のバイオマーカーの存在および濃度のスコア値を測定すること、および
(c)(b)で得られた前記スコア値および前記濃度に閾値を適用し、前記バイオマーカーの存在および濃度に関連する前記胚の前記特徴を特定することを含み、
少なくとも第1のバイオマーカーが、140から190g/モルまでの範囲中の分子量を有するアミノ化合物を含み、ステップ(c)が、
(i)類似性尺度を使用して、各相関シグナルのスペクトラムを、相関する参照バイオマーカーの予想スペクトラムとマッチングして、少なくとも1つの正相関シグナルを規定することにより、各関連バイオマーカーシグナルを、前記参照バイオマーカーと相関させること、
(ii)各正相関シグナルの強度を測定し、その絶対および/または相対シグナル強度をスコア化すること、および
(iii)類似性関数から得られた前記スコア値に閾値を適用して、相関する胚特徴を決定することをさらに含み、
前記バイオマーカーの存在および濃度が、胚が雄成体へと発生する可能性が高いこと、または雌成体へと発生する可能性が高いことに相関し、前記少なくとも第1のバイオマーカーが3-[(2-アミノエチル)スルファニル]ブタン酸である、方法。 - 尿膜腔液中の3-[(2-アミノエチル)スルファニル]ブタン酸の濃度が、7、8、または9日目に50ng/ml以上の量であることが、雌胚と相関し、前記バイオマーカーが50ng/ml未満で存在することが、雄胚と相関する、請求項1に記載の方法。
- 少なくとも第1および第2のバイオマーカーが検出および分析され、前記少なくとも第1および第2のバイオマーカーの絶対量および相対量を使用して、1つまたは複数の特徴が決定される、請求項1または2に記載の方法。
- 選択される特徴が、胚が十分に成長して孵化を達成する成育能または成育不能の可能性である、請求項1~3のいずれか一項に記載の方法。
- 選択される特徴が、胚が孵卵条件下で孵化へと進行するのに必要である可能性が高い発生段階および時間の経過予想である、請求項1~4のいずれか一項に記載の方法。
- 磁気共鳴画像法、スペクトル共鳴法、1つまたは複数の好適な検出器と接続された分析クロマトグラフ法、蛍光分光法、および/または前記1つもしくは複数のバイオマーカーの存在および濃度を測定するためのバイオマーカー選択的試薬を含むアッセイ法の1つまたは複数を適用することを含む、請求項1~5のいずれか一項に記載の方法。
- 質量分光分析が、エレクトロスプレーイオン化(ESI)質量分析法、マトリックス支援レーザー脱離イオン化飛行時間型(MALDI-TOF)質量分析法、または表面増強レーザー脱離イオン化飛行時間型(SELDI-TOF)質量分析法、SPE/MS/MS、LDTD(レーザーダイオード熱脱離)イオン源、および/またはイオン移動度センサー(IMS)を含む、請求項6に記載の方法。
- 前記試料が、分析前に処理される、請求項1~7のいずれか一項に記載の方法。
- 前記処理が、固相抽出(SPE)、ガスクロマトグラフィー、単相または多相高圧液体クロマトグラフィー(HPLC)による試料分離を含む、請求項8に記載の方法。
- 参照バイオマーカーの1つまたは複数の内部標準物質が、質量分析法による分析の前に、前記試料に添加される、請求項7~9のいずれか一項に記載の方法。
- 前記絶対シグナル強度が、バイオマーカーシグナル強度を測定し、それを1つまたは複数の既知内部標準物質のシグナル強度と比較することによりスコア化される、請求項1~10のいずれか一項に記載の方法。
- 多数の卵が、1つまたは複数の胚特徴について検査される、請求項1~11のいずれか一項に記載の方法。
- 完全に自動化されている、請求項1~12のいずれか一項に記載の方法。
- 卵中の胚が成育可能であり雄であるかまたは成育可能で雌であるかまたは成育不能であるかを決定すること、ならびに多数の成育可能な雄卵と多数の成育可能な雌卵と1つまたは複数の成育不能な卵とを分離することをさらに含む、請求項1~13のいずれか一項に記載の方法。
- 前記胚が孵化する可能性が高いと考えられる時間により成育可能な卵を選別することをさらに含む、請求項14に記載の方法。
- 特定の特徴を有する卵生種の幼体を選択的に孵卵するためのプロセスであって、
a.前記種から多数の卵を準備すること、および
b.前記卵を請求項1~15に記載の方法に供して、前記胚の特徴を決定すること、および
c.所望の特徴を有する卵を選択して、選択された多数の卵を形成すること、および
d.前記幼体の1つまたは複数が孵化するまで、前記選択された卵を孵卵することを含むプロセス。 - 前記試料中の前記少なくとも1つのバイオマーカーのより高いかまたはより低い濃度が、選択結果を示す、請求項12に記載の方法。
- 前記少なくとも1つのバイオマーカーの濃度が、対象が雄または雌である可能性が高いことを示す、請求項13に記載の方法。
- 動物および/もしくはヒトの食料生産のための、化粧用、医療用、および/もしくは栄養用化合物の生産および/もしくは単離のための、発酵によるメタン生産のための、ワクチン生産のための、ならびに/または高品質肥料生産のための、請求項1~15、17および18のいずれか一項に記載の方法を用いて卵を取得する使用方法であって、前記卵を取得することは、雄成体または雌成体へと発育する可能性があると特定された胚のいずれかを含む卵を選択して、卵選択群を得、前記卵選択群を使用することを含む、方法。
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