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Related Concept Videos

Gene Therapy00:59

Gene Therapy

Gene therapy is a technique where a gene is inserted into a person’s cells to prevent or treat a serious disease. The added gene may be a healthy version of the gene that is mutated in the patient, or it could be a different gene that inactivates or compensates for the patient’s disease-causing gene. For example, in patients with severe combined immunodeficiency (SCID) due to a mutation in the gene for the enzyme adenosine deaminase, a functioning version of the gene can be inserted. The...
Gene Therapy00:59

Gene Therapy

Gene therapy is a technique where a gene is inserted into a person’s cells to prevent or treat a serious disease. The added gene may be a healthy version of the gene that is mutated in the patient, or it could be a different gene that inactivates or compensates for the patient’s disease-causing gene. For example, in patients with severe combined immunodeficiency (SCID) due to a mutation in the gene for the enzyme adenosine deaminase, a functioning version of the gene can be inserted. The...
Microorganisms in Medicine and Therapeutics01:29

Microorganisms in Medicine and Therapeutics

Microorganisms play a fundamental role in vaccine development, gene therapy, and therapeutic production. Their biological properties are harnessed to advance medicine and public health. Beyond immunization, microorganisms contribute to gut health, antibiotic synthesis, and genetic disease treatment.Live Attenuated and Inactivated VaccinesLive attenuated vaccines, such as the measles, mumps, and rubella (MMR) vaccine, utilize weakened forms of pathogens to closely resemble natural infections.
Pharmacogenomics: Identification of New Drug Targets01:29

Pharmacogenomics: Identification of New Drug Targets

Advances in genomics have profoundly influenced drug discovery by increasing both the speed and accuracy of pharmaceutical development. Pharmacogenomics, which examines how genetic variation influences drug response, facilitates the identification of novel therapeutic targets and enables patient stratification for personalized treatment. These strategies contribute to improved drug efficacy, minimized adverse effects, and more efficient clinical trial design.Mapping genetic differences...
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...
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 specific...

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Related Experiment Video

Updated: Jun 3, 2026

Generation of Cationic Nanoliposomes for the Efficient Delivery of In Vitro Transcribed Messenger RNA
08:29

Generation of Cationic Nanoliposomes for the Efficient Delivery of In Vitro Transcribed Messenger RNA

Published on: February 1, 2019

Polycation-based gene therapy: current knowledge and new perspectives.

Marcio J Tiera1, Qin Shi, Françoise M Winnik

  • 1Orthopedic Research Laboratory, Hôpital du Sacré-Coeur de Montréal, Montreal, QC, Canada.

Current Gene Therapy
|April 2, 2011
PubMed
Summary
This summary is machine-generated.

Non-viral gene therapy faces challenges with low gene transfection efficiency. This review explores synthetic and natural polycations to enhance gene delivery across biological barriers for improved therapeutic outcomes.

Related Experiment Videos

Last Updated: Jun 3, 2026

Generation of Cationic Nanoliposomes for the Efficient Delivery of In Vitro Transcribed Messenger RNA
08:29

Generation of Cationic Nanoliposomes for the Efficient Delivery of In Vitro Transcribed Messenger RNA

Published on: February 1, 2019

Area of Science:

  • Biomedical Engineering
  • Molecular Biology
  • Gene Therapy

Background:

  • Gene therapy aims to treat diseases by delivering therapeutic genes.
  • Non-viral gene delivery systems, particularly polycation-based ones, are promising alternatives to viral vectors.
  • Insufficient transfection efficiency remains a significant hurdle for non-viral gene therapy.

Purpose of the Study:

  • To review the current state of gene therapy utilizing synthetic and natural polycations.
  • To highlight recent advancements in improving gene transfer efficiency.
  • To address challenges in overcoming biological barriers for effective gene delivery.

Main Methods:

  • Review of existing literature on polycation-based gene delivery systems.
  • Analysis of strategies to overcome extracellular and intracellular barriers.
  • Exploration of mechanisms for endosomal escape and nuclear targeting.

Main Results:

  • Polycations offer a promising approach for non-viral gene delivery.
  • Understanding cellular mechanisms has led to new polycation system designs.
  • Various strategies are being developed to enhance gene transfer efficiency.

Conclusions:

  • Advancements in polycation synthesis and understanding of cellular transport mechanisms are crucial for effective gene therapy.
  • Overcoming barriers like serum nucleases and cellular uptake is key to successful non-viral gene delivery.
  • Further research into polycation-based systems holds significant potential for improving gene therapy outcomes.