JP6370491B2 - 抗腫瘍薬の送達のための窒化ホウ素ナノ粒子の作製方法 - Google Patents
抗腫瘍薬の送達のための窒化ホウ素ナノ粒子の作製方法 Download PDFInfo
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- JP6370491B2 JP6370491B2 JP2017526841A JP2017526841A JP6370491B2 JP 6370491 B2 JP6370491 B2 JP 6370491B2 JP 2017526841 A JP2017526841 A JP 2017526841A JP 2017526841 A JP2017526841 A JP 2017526841A JP 6370491 B2 JP6370491 B2 JP 6370491B2
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- Prior art keywords
- boron nitride
- boron
- nanoparticles
- amorphous boron
- powder mixture
- Prior art date
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- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 31
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Classifications
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- A61K47/6921—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit the form being a particulate, a powder, an adsorbate, a bead or a sphere
- A61K47/6927—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit the form being a particulate, a powder, an adsorbate, a bead or a sphere the form being a solid microparticle having no hollow or gas-filled cores
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Description
本発明は、ナノ医療技術に関するものであり、より具体的には、抗腫瘍化学療法薬の送達のための輸送ナノ剤(transporting nanoagents)の開発に関する。
化学気相蒸着により球形の窒化ホウ素ナノ粒子を得る方法が知られている(US 2011/0033707(2011年2月10日公開))。上記方法によれば、直径50nm未満の窒化ホウ素ナノ粒子が得られる。上記方法においては、エーテルと、ホウ酸と、窒素との混合物をアンモニウムおよびアルゴンの雰囲気下で加熱することにより反応生成物を形成し、当該反応生成物をさらに結晶化させることにより球形ナノ粒子前駆体を形成し、当該前駆体を不活性ガス中で最終加熱する。
本発明においてもたらされる技術的成果は、十分に発達した外表面を有する50〜300nmの大きさの分散された窒化ホウ素ナノ粒子の適用により、抗腫瘍薬を有するナノコンテナの細胞への取り込み活性の向上によって抗腫瘍化学療法の効率を向上させること、および、細胞に対するナノコンテナの毒性を防止することである。
1000≦T≦1430
1.2≦ξ≦8
(式中、Tは粉末混合物の温度であり、ξは比流量(specific flows)の比FAr/FNH3であり、FArは輸送ガスの比流量であり、FNH3は反応ガスの比流量である)
で行われる。
酸化鉄 70〜91
非晶質ホウ素 9〜30
である。
酸化マグネシウム 65〜84
非晶質ホウ素 16〜35
である。
酸化錫 75〜95
非晶質ホウ素 5〜25
である。
ホウ酸 85〜92%
非晶質ホウ素 8〜15%
である。
酸化鉄 59〜86
酸化マグネシウム 5〜12
非晶質ホウ素 9〜32
である。
ホウ酸 65〜91
酸化マグネシウム 3〜10
非晶質ホウ素6〜25
である。
本発明は、以下の通り実施される。
垂直誘導炉VIN−1,6−20(Vac ETO Co.、ロシア)内で、化学気相蒸着により球形窒化ホウ素ナノ粒子を合成した。59重量%の酸化鉄と、12重量%の酸化マグネシウムと、29重量%の非晶質ホウ素とからなる十分に均質化された粉末混合物(質量:10.88g)を収容したるつぼを、炉内に載置した。作業チェンバの表面に吸着した水および酸素を除去するために、恒常的に真空排気を行いながら、反応炉の作業チェンバを300℃まで加熱した。続いて、チェンバ内をアルゴンで満たし、大気圧の状態にした。850℃まで加熱後、炉内のアルゴン輸送ガスおよびアンモニア反応ガスの流れをオープンにした。1310℃まで加熱後、当該温度を200分間にわたって維持した。合成完了後、作業チェンバを40〜50℃まで冷却し、続いて通気および開放を行った。
78重量%のホウ酸と、4重量%の酸化マグネシウムと、18重量%の非晶質ホウ素とからなる質量11.76gの粉末混合物を、反応炉内のるつぼの中に載置した。反応炉を予め浄化して不純物を除去し、反応炉内を不活性ガスで満たし、作業温度まで加熱し、輸送ガスおよび反応物ガスを流入させた後(実施例1に記載の方法に従う)、作業温度を1190℃にし、当該温度を320分間にわたり維持した。合成の結果、直径70〜100nmの窒化ホウ素ナノ粒子の凝集体である、質量345mgの軟質の純白の粉末が得られた。
Claims (19)
- 腫瘍細胞への抗腫瘍薬送達のための窒化ホウ素ナノ粒子の作製方法であって、
反応アンモニアガスと、輸送アルゴンガスと、非晶質ホウ素および酸素担体化学物質をベースとする粉末混合物とを用いる化学気相蒸着法により、十分に発達した外表面を有する50〜300nmの大きさの球形窒化ホウ素ナノ粒子を合成することを含み、
化学蒸着は、下記条件下:
1000≦T≦1430
1.2≦ξ≦8
(式中、Tは粉末混合物の温度(℃)であり、ξは比流量の比FAr/FNH3であり、FArは輸送ガスの比流量であり、FNH3は反応ガスの比流量である)
で行われ、
次いで、得られた窒化ホウ素ナノ粒子の凝集体を超音波分散させることと、収着により抗腫瘍薬を浸透させることと、蒸留水中で洗浄することと、を含む方法。 - 上記酸素担体化学物質は、ホウ酸および/または酸化マグネシウムおよび/または酸化鉄(II)および/または酸化錫(II)および/またはこれらの混合物から選択され得る、請求項1に記載の方法。
- 上記粉末混合物における、酸化鉄および非晶質ホウ素の含有量は、以下の重量比、重量%:
酸化鉄 70〜91
非晶質ホウ素 9〜30
である、請求項2に記載の方法。 - 上記粉末混合物における、酸化マグネシウムおよび非晶質ホウ素の含有量は、以下の重量比、重量%:
酸化マグネシウム 65〜84
非晶質ホウ素 16〜35
である、請求項2に記載の方法。 - 上記粉末混合物における、酸化錫および非晶質ホウ素の含有量は、以下の重量比、重量%:
酸化錫 75〜95
非晶質ホウ素 5〜25
である、請求項2に記載の方法。 - 上記粉末混合物における、ホウ酸および非晶質ホウ素の含有量は、以下の重量比、重量%:
ホウ酸 85〜92%
非晶質ホウ素 8〜15%
である、請求項2に記載の方法。 - 上記粉末混合物における、酸化鉄、酸化マグネシウム、および非晶質ホウ素の含有量は、以下の重量比、重量%:
酸化鉄 59〜86
酸化マグネシウム 5〜12
非晶質ホウ素 9〜32
である、請求項2に記載の方法。 - 上記粉末混合物における、ホウ酸、酸化マグネシウムおよび非晶質ホウ素の含有量は、以下の重量比、重量%:
ホウ酸 65〜91
酸化マグネシウム 3〜10
非晶質ホウ素 6〜25
である、請求項2に記載の方法。 - 40〜100Wのパワーで30分間にわたって超音波処理を行うことにより、窒化ホウ素ナノ粒子を分散させることを特徴とする、請求項1に記載の方法。
- 窒化ホウ素ナノ粒子への抗腫瘍薬の収着は、マグネチックスターラーを速度250rpmで用いて、濃度0.5〜5.0mg/mlの抗腫瘍薬溶液中の上記分散されたナノ粒子を12〜24時間連続して攪拌することにより行われる、請求項1に記載の方法。
- 窒化ホウ素ナノ粒子による抗腫瘍薬の収着は、代替的に、濃度0.5〜5.0mg/mlの抗腫瘍薬溶液中の上記分散されたナノ粒子を、150Wのパワーで15〜60分間超音波処理することにより行われ得る、請求項1に記載の方法。
- 上記抗腫瘍薬は、合成抗腫瘍薬または天然抗腫瘍薬から選択される、請求項1に記載の方法。
- 上記合成抗腫瘍薬は、アルキル化薬、代謝拮抗物質、または他の群の合成薬から選択される、請求項12に記載の方法。
- 上記アルキル化合成抗腫瘍薬は、クロロエチルアミン、エチレンアミン、ニトロソウレア誘導体、またはメタンスルホン酸誘導体から選択される、請求項13に記載の方法。
- 上記代謝拮抗合成抗腫瘍薬は、葉酸拮抗物質、プリン拮抗物質、またはピリミジン拮抗物質から選択されることを特徴とする、請求項13に記載の方法。
- 上記他の群の合成抗腫瘍薬は、プロスピジナム、スピラシジン、ジカルバシン、ナツラン、シスプラチン、またはイミザドールカルボキサミドから選択されることを特徴とする、請求項13に記載の方法。
- 上記天然抗腫瘍薬は、抗生物質または植物性薬から選択されることを特徴とする、請求項12に記載の方法。
- 上記抗生物質群の上記天然抗腫瘍薬は、アドリアマイシン、ブレオマイシン、ダクチノマイシン、ルボマイシン、ブルネオマイシン、またはマイトマイシンCから選択される、請求項17に記載の方法。
- 上記自然抗腫瘍植物性薬は、コルカミン、ビンブラスチン、またはビンクリスチンから選択される、請求項17に記載の方法。
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