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Targeted Cancer Therapies02:57

Targeted Cancer Therapies

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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.
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Simple proteins and protein complexes contain only amino acids. In contrast, many other proteins, called conjugated proteins, covalently bond with non-protein moieties.
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Combining two or more treatment methods increases the life span of cancer patients while reducing damage to vital organs or tissue from the overuse of a single treatment. Combination therapy also targets different cancer-inducing pathways, thus reducing the chances of developing resistance to treatment.
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Conjugation, a key component of phase II biotransformation reactions, is a vital process in drug detoxification. It involves transferring endogenous substances like glucuronic acid, sulfate, and glycine to drugs or their metabolites formed in phase I reactions. These conjugation reactions, often catalyzed by specific enzymes, transform potentially harmful metabolites into inactive, water-soluble forms easily excreted in urine or bile. By enhancing polarity and eliminating pharmacological...
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Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
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Updated: Nov 7, 2025

Initial Evaluation of Antibody-conjugates Modified with Viral-derived Peptides for Increasing Cellular Accumulation and Improving Tumor Targeting
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Polypeptides-Drug Conjugates for Anticancer Therapy.

Yu Zhang1, Pan He2, Peng Zhang1

  • 1Key Laboratory of Polymer Ecomaterials, Jilin Biomedical Polymers Engineering Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China.

Advanced Healthcare Materials
|April 30, 2021
PubMed
Summary
This summary is machine-generated.

Polypeptides-drug conjugates offer improved cancer treatment by enhancing drug delivery and reducing side effects. This review highlights advances in designing these conjugates for better therapeutic outcomes.

Keywords:
anticancer therapynanomedicinespolymer-drug conjugatespolypeptidesprodrugs

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Area of Science:

  • Biomaterials Science
  • Polymer Chemistry
  • Nanomedicine

Background:

  • Polypeptides are biodegradable polymers extensively utilized in drug delivery.
  • Their controllable synthesis and functionalization make them suitable for conjugation with therapeutic agents.
  • Polypeptides-drug conjugates aim to improve drug efficacy and patient safety.

Purpose of the Study:

  • To review recent advancements in the design and preparation of polypeptides-drug conjugates.
  • To summarize strategies for conjugating various drug types to polypeptide backbones.
  • To discuss challenges and future directions for clinical applications.

Main Methods:

  • Literature review of recent research on polypeptides-drug conjugates.
  • Analysis of conjugation strategies for different drug classes (small molecules, proteins, etc.).
  • Synthesis and characterization techniques for polypeptide-drug conjugates.

Main Results:

  • Polypeptides-drug conjugates demonstrate improved pharmacokinetics and targeted drug delivery.
  • Enhanced therapeutic efficacy and reduced systemic toxicity are observed.
  • Various conjugation strategies have been developed for diverse drug types.

Conclusions:

  • Polypeptides-drug conjugates represent a promising platform for advanced cancer therapy.
  • Further research is needed to overcome challenges in clinical translation.
  • Innovative design and preparation methods will drive future developments.