Related Experiment Video
Updated: Sep 6, 2026

Analysis of Targeted Viral Protein Nanoparticles Delivered to HER2+ Tumors
Published on: June 18, 2013
Current development of targeted oligonucleotide-based cancer therapies: Perspective on HER2-positive breast cancer
Worapol Ngamcherdtrakul1, David J Castro1, Shenda Gu2
1Department of Biomedical Engineering, Oregon Health and Science University, 3303 SW Bond Ave, Portland, OR 97239, USA; PDX Pharmaceuticals, LLC, 3303 SW Bond Ave, Portland, OR 97239, USA.
Abstract:
This Review discusses the various types of non-coding oligonucleotides, which have garnered extensive interest as new alternatives for targeted cancer therapies over small molecule inhibitors and monoclonal antibodies. These oligonucleotides can target any hallmark of cancer, no longer limited to so-called "druggable" targets. Thus, any identified gene that plays a key role in cancer progression or drug resistance can be exploited with oligonucleotides. Among them, small-interfering RNAs (siRNAs) are frequently utilized for gene silencing due to the robust and well established mechanism of RNA interference. Despite promising advantages, clinical translation of siRNAs is hindered by the lack of effective delivery platforms. This Review provides general criteria and consideration of nanoparticle development for systemic siRNA delivery. Different classes of nanoparticle candidates for siRNA delivery are discussed, and the progress in clinical trials for systemic cancer treatment is reviewed. Lastly, this Review presents HER2 (human epidermal growth factor receptor type 2)-positive breast cancer as one example that could benefit significantly from siRNA technology. How siRNA-based therapeutics can overcome cancer resistance to such therapies is discussed.
Insights
Non-coding oligonucleotides offer novel cancer therapies by targeting key genes. Nanoparticle delivery systems are crucial for advancing small interfering RNA (siRNA) cancer treatments, addressing challenges in clinical translation.
Area of Science:
- Oncology
- Molecular Biology
- Biotechnology
Background:
- Non-coding oligonucleotides represent a promising therapeutic class for cancer, offering broader targetability than traditional small molecules or monoclonal antibodies.
- Oligonucleotides can target any gene involved in cancer progression or drug resistance, expanding therapeutic options.
- Small interfering RNAs (siRNAs) are particularly effective for gene silencing via RNA interference, but clinical application is limited by delivery challenges.
Purpose of the Study:
- To review nanoparticle development for systemic delivery of small interfering RNAs (siRNAs) in cancer therapy.
- To discuss criteria and considerations for creating effective siRNA delivery platforms.
- To examine the progress of siRNA-based cancer treatments in clinical trials.
Main Methods:
- Review of current literature on non-coding oligonucleotides and nanoparticle delivery systems.
- Analysis of different nanoparticle candidates for systemic siRNA delivery.
- Examination of clinical trial data for siRNA-based cancer therapeutics.
Main Results:
- Various classes of nanoparticles show potential for systemic siRNA delivery.
- Clinical trials are underway for siRNA-based cancer treatments, with some showing promise.
- HER2-positive breast cancer is highlighted as a potential beneficiary of siRNA technology.
Conclusions:
- Nanoparticle-mediated delivery is essential for the clinical success of siRNA cancer therapies.
- siRNA technology holds potential to overcome existing cancer treatment resistance.
- Further development of effective delivery platforms is critical for realizing the full therapeutic potential of siRNAs in oncology.
More Related Videos
14:20Polymalic Acid-based Nano Biopolymers for Targeting of Multiple Tumor Markers: An Opportunity for Personalized Medicine?
Published on: June 13, 2014
13:19Quantifying Antibody-Dependent Cellular Cytotoxicity in a Tumor Spheroid Model: Application for Drug Discovery
Published on: April 26, 2024
Related Concept Videos
Cancer Therapies
However, cancer treatments can pose several challenges, as therapies used to kill cancer cells are generally also toxic to normal cells. Moreover, cancer cells mutate rapidly and can develop resistance to chemical agents or radiation therapy. Besides, all types of cancer cells may not respond to the same therapy. Some cancer cells respond to one...
Targeted Cancer Therapies
There are several types of targeted therapies against specific...
Combination Therapies and Personalized Medicine
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...
Targeted Cancer Therapies
There are several types of targeted therapies against specific...
Tumor Immunotherapy
Cancer Vaccines
Cancer vaccines come in two categories: preventive (prophylactic) and treatment (active). Preventive vaccines, such as the Human Papillomavirus (HPV) vaccine, protect against viruses that cause certain...