脳脊髄薬物送達におけるトランスレーショナルバリアを克服するためのマルチモーダルアプローチ
Christopher Kadamus1, Suna Sibi2, Reshma Bharadwaj3
1Device, Delivery, and Connected Solutions, Eli Lilly and Company, Boston, MA, USA.
Expert opinion on drug delivery
|December 12, 2025
まとめ
神経学的薬物送達におけるギャップを埋めるには、前臨床データをヒトに適用する際の課題を克服する必要があります。調和のとれたイメージングとマルチモーダルモデリングは、効果的な脳脊髄液(CSF)送達プラットフォームを開発するための鍵となります。
科学分野:
- 神経学
- 薬理学
- 生物医学工学
背景:
- 前臨床的神経学的薬物送達所見をヒトに適用することは困難です。
- 動物モデルとヒトの間の神経解剖学的および生理学的差異は、脳脊髄液(CSF)送達のためのデータ外挿を妨げます。
- CSFへの直接投与のための既存の方法は、重大なトランスレーショナルバリアに直面しています。
研究 の 目的:
- CSFを介した薬物送達におけるトランスレーショナルバリアに関する専門家の見解を統合すること。
- 前臨床的神経学的薬物送達所見のトランスレーションを改善するための戦略的アプローチを特定すること。
- 次世代CNS送達プラットフォームを開発するためのロードマップを提案すること。
主な方法:
- 文献分析を、前臨床からヒトへのトランスレーション、神経画像、CSFフロー特性評価に分類しました。
- 巨視的側面(送達方法、CSFフロー、神経解剖学的特徴)に焦点を当てました。
- 理論的、実験的、臨床的データを考慮した仮説駆動型フレームワーク。
主要な成果:
- 神経画像技術の活用は、主要な戦略的アプローチです。
- 階層化された複数種にわたるモデリングは、ヒトの中枢神経系(CNS)のダイナミクスをより正確に近似することができます。
- グリンパティックシステムと実質分布の強化は、有望な分野です。
結論:
- 画像処理、モデリング、生物学的検証を組み合わせた統合フレームワークを推奨します。
- 調和のとれた画像処理とマルチモーダルモデリングは、CNS送達研究に不可欠です。
- これらの基礎的なステップは、高度なCNS送達プラットフォームの開発を加速します。
関連する概念動画
Drug Delivery: Parenteral Route
1.4K
The parenteral route is a critical method of drug administration. It delivers compounds directly into the systemic circulation and bypasses the gastrointestinal tract. This approach is particularly advantageous for drugs that exhibit poor absorption or instability when administered orally.
There are three primary parenteral routes: intravenous (IV), intramuscular (IM), and subcutaneous (SC). The IV route introduces the drug directly into the bloodstream, ensuring immediate action. The IM route...
There are three primary parenteral routes: intravenous (IV), intramuscular (IM), and subcutaneous (SC). The IV route introduces the drug directly into the bloodstream, ensuring immediate action. The IM route...
1.4K
Drug Delivery: Miscellaneous Routes
694
Drug delivery methods like oral inhalation, nasal sprays, transdermal patches, eye drops, intravitreal injection, and rectal administration provide localized effects with reduced toxicity.
Oral inhalation and nasal sprays swiftly transfer drugs across the respiratory epithelium's mucosal layer. Inhaled glucocorticoids and bronchodilators directly target lung conditions such as asthma, while fluticasone nasal spray mitigates allergic rhinitis.
Transdermal patches transport drugs...
Oral inhalation and nasal sprays swiftly transfer drugs across the respiratory epithelium's mucosal layer. Inhaled glucocorticoids and bronchodilators directly target lung conditions such as asthma, while fluticasone nasal spray mitigates allergic rhinitis.
Transdermal patches transport drugs...
694
Drug Delivery: Overview
701
The selection of a drug's delivery route depends upon its physicochemical properties, including lipid or water solubility and ionization, as well as the therapeutic requirement, such as immediate or sustained effect. These routes can be divided into three primary categories: enteral, parenteral, and topical.
Enteral delivery involves administering drugs directly through swallowing, sublingual placement, or buccal application. Orally administered drugs predominantly navigate the...
Enteral delivery involves administering drugs directly through swallowing, sublingual placement, or buccal application. Orally administered drugs predominantly navigate the...
701
Factors Affecting Drug Distribution: Physiological Barriers
656
Drug distribution in the body is intricately regulated by various physiological barriers that control the passage of substances. These include the capillary endothelial barrier, the blood-brain, blood-cerebrospinal fluid, blood-placental, and blood-testis barriers.
The capillary endothelial barrier allows only smaller molecules below 600 Da (Daltons) to pass through. It also restricts drugs like heparin that are bound to blood components, limiting their movement within the bloodstream.
The...
The capillary endothelial barrier allows only smaller molecules below 600 Da (Daltons) to pass through. It also restricts drugs like heparin that are bound to blood components, limiting their movement within the bloodstream.
The...
656
Cellular Membranes and Drug Transport
1.4K
Drugs must traverse multiple biological barriers, such as multi-layered skin, single-layered intestinal epithelium, and the plasma membrane, to reach their target sites within the body. The plasma membrane, a highly structured composite of phospholipids, carbohydrates, and proteins, is the cell's protective boundary, facilitating selective substance exchange.
Phospholipids arrange themselves into a bilayer, with hydrophilic heads oriented outward and hydrophobic tails facing inward.
Phospholipids arrange themselves into a bilayer, with hydrophilic heads oriented outward and hydrophobic tails facing inward.
1.4K
Mechanisms of Drug Absorption: Paracellular, Transcellular, and Vesicular Transport
1.5K
Drugs need to permeate cell membranes to reach their target sites after administration. Orally administered drugs must transcend intestinal epithelial membrane barriers to infiltrate the systemic circulation. Drugs with a molecular weight of less than 500 Daltons diffuse through gaps between neighboring cells, called paracellular pathways.
However, most drugs use the transcellular route, traversing directly through the cell membranes via two mechanisms: passive and active transport. Passive...
However, most drugs use the transcellular route, traversing directly through the cell membranes via two mechanisms: passive and active transport. Passive...
1.5K


