JP2013515258A - クロマトグラフィーカラムを乾式充填する方法 - Google Patents
クロマトグラフィーカラムを乾式充填する方法 Download PDFInfo
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- JP2013515258A JP2013515258A JP2012545900A JP2012545900A JP2013515258A JP 2013515258 A JP2013515258 A JP 2013515258A JP 2012545900 A JP2012545900 A JP 2012545900A JP 2012545900 A JP2012545900 A JP 2012545900A JP 2013515258 A JP2013515258 A JP 2013515258A
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Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
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Abstract
【選択図】 図1
Description
本明細書中で、用語「膨潤性粒子」は、液体中に浸漬したときに大きさが増大する粒子を意味する。これは、同じ量の乾燥粒子の嵩体積よりずっと大きい液体中の沈降体積として観察することができる。
図2に示す一実施形態では、カラム1は、乾燥膨潤性粒子5を含む可撓性容器7からなる。これは、容易に輸送される安価な可撓性容器に包装された形態で粒子をユーザーに供給することができ、ユーザーがその容器をカラムに入れ液体を加えることができるという利点を有する。可撓性容器は1以上の可撓性壁、すなわち、支持されてない容器に1バールの過圧がかけられたとき容器の少なくとも1%の体積変化を生じるのに十分なほど曲がることができる壁を含むことができる。可撓性容器の壁はカラムチャンバー2の多孔質上部及び下部プレート13に対して嵌合する多孔質部分を有することができる。可撓性容器は、例えばプラスチックバッグ構造であるか、又は成形及び/又は押出部品か組み立てることができる。一実施形態では、可撓性容器は粒子が膨潤する際にカラムチャンバーに嵌合するように膨潤することができる。別の実施形態では、粒子を保持し液体分布を提供する多孔質上部及び下部プレートセグメントは可撓性容器中に組み込み得る。この場合、可撓性容器は閉鎖系であり、可撓性容器を外部から機械的に支持するハウジング又はその他の部品と流体接触しない。
図1i)は、流体分配器3及び多孔質スクリーン4により区切られたカラムチャンバー2を有するカラム1の概略図である。
カラム出口における滞留時間分布を分析するために、トレーサーとして、カラム体積の1〜1.5%の体積のトレーサー(アセトン2%v/v、DI水中)を適用する(UVシグナル@280nm)。滞留時間分布は単一のピークとして表されるべきである(図7参照)。評価は以下に記載する。
・カラムでのピークの広がりは相当理論段数(相当段数)で表される。
・ピークの対称性はピーク非対称係数Asで表される。
段数 N
平均滞留時間1 μ1
分散1 σ2
保持時間2 tR
保持体積2 VR
ピーク半値幅 wh
ベッド高さ L
粒子径 dp
理論段相当高さ HETP
換算段高さ h=HETP/dp
非対称係数 As
1 トレーサーシグナルの積分から導かれる滞留時間分布(RTD)曲線の一次及び二次モーメント
2 最大ピーク高さにでの時間(又は溶出体積)に対応する保持時間(保持体積)。
使用した乾燥膨潤性粒子は、Q Sepharose(商標)HP(GE Healthcare、Sweden)であり、水中で膨潤したときの平均直径が34μmの架橋アガロースビーズにテトラメチルアンモニウム基リガンドが結合した陰イオン交換体である。Q Sepharose HP粒子はアセトンに移してから室温で真空乾燥しておいたものである。
使用した乾燥膨潤性粒子は、Capto(商標)S(GE Healthcare、Sweden)であり、水中で膨潤したときの平均直径が90μmのデキストラン修飾架橋アガロースビーズにスルホン酸基リガンドが結合した陽イオン交換体である。Capto S粒子はアセトンに移してから室温で真空乾燥しておいたものである。
Claims (33)
- クロマトグラフィーカラム(1)を乾燥膨潤性粒子で充填する方法であって、a)カラムチャンバー体積の約105〜120%の液体膨潤体積Vsを与えるのに充分な量の乾燥膨潤性粒子(5)をクロマトグラフィーカラム内のカラムチャンバー(2)に移す工程と、b)カラムを閉じる工程と、c)液体をカラムに供給する工程と
を含む方法。 - さらに、工程a)の前に、乾燥膨潤性粒子の液体吸収率Vs/mdを決定し、その液体吸収率から、カラムチャンバーに移すべき乾燥膨潤性粒子の量を決定する工程を含む、請求項1記載の方法。
- 液体吸収率を5%未満の変動係数で決定する、請求項2記載の方法。
- さらに、工程c)の前に、カラムを振動に付す工程を含む、請求項1乃至請求項3のいずれか1項記載の方法。
- 工程c)において、液体を上向流方向でカラムに供給する、請求項1乃至請求項4のいずれか1項記載の方法。
- 工程c)において、液体の添加速度が粒子による毛管吸引速度を超えない、請求項1乃至請求項5のいずれか1項記載の方法。
- 工程a)が、最初に乾燥膨潤性粒子を可撓性容器(7)に移した後、可撓性容器をカラムチャンバー(2)内に入れることを含む、請求項1乃至請求項6のいずれか1項記載の方法。
- 工程a)が、ゲルの膨潤中及び/又はカラムの作動中カラムチャンバーに対する寸法安定性をもたらす剛性ハウジング(11)にカラムチャンバー(8)を移すことを含む、請求項1乃至請求項7のいずれか1項記載の方法。
- さらに、工程c)の前に、カラム又は可撓性容器を乾燥膨潤性粒子と共に放射線殺菌する工程を含む、請求項1乃至請求項8のいずれか1項記載の方法。
- 乾燥膨潤性粒子と共にカラムに供給される液体が1種以上のバイオ医薬のような生体分子を含む、請求項1乃至請求項9のいずれか1項記載の方法。
- 乾燥膨潤性粒子を含むカラムであって、粒子の量が、カラムチャンバー体積の約105〜120%の水性液体膨潤体積Vsを与えるのに充分である、カラム。
- 前記液体が20℃の0.1MNaCl水溶液である、請求項11記載のカラム。
- 前記乾燥膨潤性粒子の液体吸収率Vs/md(0.1MNaCl水溶液中、20℃)が5〜25ml/g、例えば5〜15ml/gである、請求項11又は請求項12記載のカラム。
- 前記乾燥膨潤性粒子の蒸留水中での液体吸収率が0.1MNaCl水溶液中での液体吸収率の1.5倍未満である、請求項11乃至請求項13のいずれか1項記載のカラム。
- 前記カラム体積が一定である、請求項11乃至請求項14のいずれか1項記載のカラム。
- 前記カラムが、乾燥膨潤性粒子(5)を含む可撓性容器(7,8)からなる、請求項11乃至請求項15のいずれか1項記載のカラム。
- 前記カラムが、1以上の剛性管壁(9)及び1以上の可撓性エンドピース(10)を有する1以上の管状カラムチャンバー(8)を含む、請求項11乃至請求項15のいずれか1項記載のカラム。
- 前記管状カラムチャンバーが剛性ハウジング(11)内に装着されている、請求項17記載のカラム。
- 前記カラムが成形又は押出部品からなる、請求項11乃至請求項18のいずれか1項記載のカラム。
- 前記乾燥膨潤性粒子が架橋アガロースからなる、請求項11乃至請求項19のいずれか1項記載のカラム。
- 前記乾燥膨潤性粒子が荷電リガンドを含む、請求項11乃至請求項20のいずれか1項記載のカラム。
- 前記乾燥膨潤性粒子が疎水性官能基を含むリガンドを含む、請求項11乃至請求項21のいずれか1項記載のカラム。
- 前記乾燥膨潤性粒子がアフィニティーリガンドを含む、請求項11乃至請求項22のいずれか1項記載のカラム。
- 前記液体が1種以上のバイオ医薬のような生体分子を含む、請求項11乃至請求項23のいずれか1項記載のカラム。
- 請求項1乃至請求項10のいずれか1項記載の方法で製造された、膨潤粒子を含むカラム。
- 換算段高さhが15未満、例えば10未満である、請求項25記載のカラム。
- 非対称係数Asが3未満、例えば2.5未満である、請求項25又は26記載のカラム。
- 同一バッチの乾燥膨潤性粒子から製造された、請求項11乃至請求項27のいずれか1項記載の少なくとも2つのカラム。
- 並列に接続された、請求項28記載の少なくとも2つのカラム。
- 請求項25乃至請求項29のいずれか1項記載の1以上のカラムの、1種以上のバイオ医薬のような生体分子の分離のための使用。
- 前記生体分子又はバイオ医薬がタンパク質である、請求項30記載の使用。
- 生体分子又はバイオ医薬が粒子に結合し、1種以上の不純物が洗浄液で洗浄することにより除去される、請求項30又は請求項31記載の使用。
- 1種以上の不純物が粒子に結合し、生体分子又はバイオ医薬がカラムのフロースルーで回収される、請求項30乃至請求項32のいずれか1項記載の使用。
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