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Updated: Sep 6, 2025
Compact Quantum Dots for Single-molecule Imaging
Published on: October 9, 2012
Organic quantum dots: An ultrasmall nanoplatform for cancer theranostics
Namdev Dhas1, Monarch Pastagia2, Akanksha Sharma3
1Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal 576104, Karnataka, India.
Abstract:
Tumours are the second leading cause of death globally, generating alterations in biological interactions and, as a result, malfunctioning of crucial genetic traits. Technological advancements have made it possible to identify tumours at the cellular level, making transcriptional gene variations and other genetic variables more easily investigated. Standard chemotherapy is seen as a non-specific treatment that has the potential to destroy healthy cells while also causing systemic toxicity in individuals. As a result, developing new technologies has become a pressing necessity. QDs are semiconductor particles with diameters ranging from 2 to 10 nanometers. QDs have grabbed the interest of many researchers due to their unique characteristics, including compact size, large surface area, surface charges, and precise targeting. QD-based drug carriers are well known among the many nanocarriers. Using QDs as a delivery approach enhances solubility, lengthens retention time, and reduces the harmful effects of loaded medicines. Several varieties of quantum dots used in drug administration are discussed in this article, along with their chemical and physical characteristics and manufacturing methods. Furthermore, it discusses the role of QDs in biological, medicinal, and theranostic applications.
Insights
Quantum dots (QDs) offer a promising nanocarrier for targeted drug delivery, enhancing solubility and reducing toxicity in cancer treatment. This review explores QD applications in medicine and theranostics.
Area of Science:
- Nanotechnology
- Biomedical Engineering
- Materials Science
Background:
- Tumors are a leading global cause of death, with conventional chemotherapy causing significant toxicity.
- Advancements allow cellular-level tumor identification and investigation of genetic variations.
- There is a critical need for novel, targeted therapeutic technologies.
Purpose of the Study:
- To review various types of quantum dots (QDs) used in drug delivery.
- To discuss the chemical, physical, and manufacturing characteristics of QDs.
- To explore the biological, medicinal, and theranostic applications of QDs.
Main Methods:
- Review of scientific literature on quantum dots for drug delivery.
- Analysis of QD properties including size, surface area, and charge.
- Examination of QD manufacturing techniques.
Main Results:
- Quantum dots (2-10 nm semiconductor particles) exhibit unique properties like precise targeting and large surface area.
- QD-based drug carriers improve drug solubility, prolong retention time, and minimize side effects.
- Various QD types are suitable for diverse drug administration strategies.
Conclusions:
- Quantum dots represent a significant advancement in nanocarrier technology for drug delivery.
- QDs offer enhanced efficacy and reduced toxicity compared to traditional chemotherapy.
- Their versatile applications span biological, medicinal, and theranostic fields.
