Recognition Sites for Cancer-targeting Drug Delivery Systems

Siyu Guan1, Qianqian Zhang1, Jianwei Bao1

  • 1School of Pharmacy, Anhui Medical University, Hefei 230032, China.

Current Drug Metabolism
|October 4, 2019
PubMed
Abstract

Insights

Target-homing drug delivery systems offer promising cancer therapy by exploiting tumor-specific recognition sites. Further research into novel sites and targeting moieties will enhance chemotherapeutics.

Area of Science:

  • Oncology
  • Nanotechnology
  • Pharmacology

Background:

  • Target-homing drug delivery systems are crucial for advanced cancer therapy.
  • These systems enhance anticancer drug efficacy by improving solubility and site-specific distribution.
  • Targeting strategies leverage differences between cancerous and normal tissues, such as low pH and receptor overexpression.

Purpose of the Study:

  • To identify and review tumor-specific recognition sites for developing targeted drug delivery systems.
  • To optimize the design of drug delivery systems for enhanced antitumor effects.

Main Methods:

  • Literature review of cancer-specific recognition sites and abnormal tumor characteristics.
  • Compilation of data on tumor microenvironment (pH, glutathione) and cell surface receptors.
  • Analysis of tumor cell organelle dysregulation (nuclear, endoplasmic reticulum).

Main Results:

  • Identified various recognition sites in tumor tissues, cells, and organelles.
  • Highlighted the design of drug delivery systems that home in on these sites.
  • Demonstrated the potential of targeted systems to improve drug delivery for cancer treatment.

Conclusions:

  • Targeted drug delivery systems represent a significant advancement in tumor chemotherapy.
  • Continued research on novel recognition sites and targeting moieties is essential.
  • This will facilitate the clinical application of improved chemotherapeutics.

Related Concept Videos

Targeted Cancer Therapies02:57

Targeted Cancer Therapies

The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
8.6K
Transducer Mechanism: Enzyme-Linked Receptors01:27

Transducer Mechanism: Enzyme-Linked Receptors

Enzyme-linked receptors are cell-surface receptors acting as an enzyme or associating with an enzyme intracellularly. They make excellent drug targets. Drugs can bind to the extracellular ligand-binding domain or directly affect their enzymatic domain and alter their activity.
Major types that are helpful drug targets include:
3.8K
Targets for Drug Action: Overview01:26

Targets for Drug Action: Overview

Drugs target macromolecules to modify ongoing cellular processes. Primary drug targets include receptors, ion channels, transporters, and enzymes.
Receptors are either membrane-spanning or intracellular proteins, which upon binding a ligand, get activated and transmit the signal downstream to elicit a response. Drugs bind receptors, either mimicking the action of endogenous ligands or blocking the receptor activity to bring about a modified response. Nearly 35% of approved drugs target the G...
9.9K
Tissue-Drug Binding: Localization of Drugs and its Significance01:24

Tissue-Drug Binding: Localization of Drugs and its Significance

Body tissues, comprising approximately 40% of the body weight, are crucial in drug distribution and localization. These tissues can serve as drug storage sites, competing with plasma binding sites for drug molecules.
Drugs can bind to different tissue components, enhancing their distribution and localization. The factors influencing drug localization in tissues include the drug's lipophilicity, structural characteristics, tissue perfusion rate, and pH differences. These factors determine...
372
Selectins01:25

Selectins

Cell adhesion is  an essential aspect of multicellularity. While stable cell interactions usually occur between cells of the same type, transient cell interactions occur between cells of different tissue types, such as between neutrophils and endothelial cells. Selectins are one class of cell adhesion molecules (CAMs) that bind carbohydrate ligands to form transient cell adhesion. They are rod-like proteins with a long extracellular part of variable length ending with the lectin domain,...
4.1K