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Modified-Release Drug Delivery Systems: Site-Targeted01:24

Modified-Release Drug Delivery Systems: Site-Targeted

Site-targeted drug delivery systems enhance therapeutic efficacy while minimizing systemic toxicity and treatment costs. Unlike conventional methods, these systems ensure precise drug delivery, improving bioavailability and reducing side effects. Targeted drug delivery is classified into three levels. First-order targeting directs drugs to the capillary beds of specific organs or tissues. Second-order targets specific cell types, such as tumor cells, using receptor-mediated interactions.
Site-Targeted Drug Delivery Systems: Polymeric Carriers01:24

Site-Targeted Drug Delivery Systems: Polymeric Carriers

Polymeric carriers enhance targeted drug delivery by increasing efficacy while minimizing off-target effects. These carriers comprise a biodegradable polymeric backbone integrated with functional elements that enable targeting, improve physicochemical properties, and regulate drug release.Targeting MechanismsThe targeting ability of polymeric carriers is mediated by a homing device, which is a molecular recognition component designed to selectively bind to specific tissues or cells. Monoclonal...

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関連する実験動画

Updated: May 18, 2026

Initial Evaluation of Antibody-conjugates Modified with Viral-derived Peptides for Increasing Cellular Accumulation and Improving Tumor Targeting
11:58

Initial Evaluation of Antibody-conjugates Modified with Viral-derived Peptides for Increasing Cellular Accumulation and Improving Tumor Targeting

Published on: March 8, 2018

細胞標的化のための抗体結合球状核酸.

Ke Zhang1, Liangliang Hao, Sarah J Hurst

  • 1Department of Chemistry and the International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA.

Journal of the American Chemical Society
|October 2, 2012
PubMed
まとめ

研究者らは,精密な遺伝子調節のための標的型球状核酸 (SNA) 構造を開発した. これらの抗体機能化されたSNAは,特定の細胞の細胞吸収と遺伝子ノックダウンの強化を示し,遺伝子療法アプリケーションの選択性を改善します.

科学分野:

  • バイオテクノロジー バイオテクノロジー
  • 分子生物学は分子生物学である.
  • ナノテクノロジー ナノテクノロジー

背景:

  • 球状核酸 (Spherical nucleic acid,SNA) 構造は強力な遺伝子調節剤である.
  • 現在のSNAコンストラクタには細胞選択性がなく,治療的な応用が制限されています.

研究 の 目的:

  • 改善された細胞選択性を持つ標的SNA構造を開発する.
  • 特定の抗原を標的にするための抗体でSNAを機能させる.

主な方法:

  • 抗体-DNA結合体によるSNA構造の非共性機能化.
  • HER2を標的にするSNAの設計と合成.
  • 標的細胞および非標的細胞における細胞吸収と遺伝子ノックダウン効率の評価.

主要な成果:

  • HER2を標的にするSNAは,選択的な細胞吸収を示した.
  • HER2を過剰発現する細胞では,遺伝子ノックダウンが著しく強化されたことが観察されました.
  • 標的型SNAは,抗体のない対照群と比較して特異性が向上した.

結論:

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Analyzing Tumor and Tissue Distribution of Target Antigen Specific Therapeutic Antibody

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Last Updated: May 18, 2026

Initial Evaluation of Antibody-conjugates Modified with Viral-derived Peptides for Increasing Cellular Accumulation and Improving Tumor Targeting
11:58

Initial Evaluation of Antibody-conjugates Modified with Viral-derived Peptides for Increasing Cellular Accumulation and Improving Tumor Targeting

Published on: March 8, 2018

Ligand Nano-cluster Arrays in a Supported Lipid Bilayer
10:34

Ligand Nano-cluster Arrays in a Supported Lipid Bilayer

Published on: April 23, 2017

Analyzing Tumor and Tissue Distribution of Target Antigen Specific Therapeutic Antibody
07:36

Analyzing Tumor and Tissue Distribution of Target Antigen Specific Therapeutic Antibody

Published on: May 16, 2020

  • 抗体媒介のターゲティングは,SNA構造の細胞選択性を高めます.
  • 標的型SNAは,選択的な遺伝子調節と潜在的な治療的介入のための有望な戦略を提供します.
  • このアプローチは,遺伝子治療のための精密ナノ医療の開発を進めています.