Nanopreparations to overcome multidrug resistance in cancer
Niravkumar R Patel1, Bhushan S Pattni, Abraham H Abouzeid
1Center for Pharmaceutical Biotechnology and Nanomedicine, Northeastern University, Boston, MA 02115, USA.
Abstract:
Multidrug resistance is the most widely exploited phenomenon by which cancer eludes chemotherapy. Broad variety of factors, ranging from the cellular ones, such as over-expression of efflux transporters, defective apoptotic machineries, and altered molecular targets, to the physiological factors such as higher interstitial fluid pressure, low extracellular pH, and formation of irregular tumor vasculature are responsible for multidrug resistance. A combination of various undesirable factors associated with biological surroundings together with poor solubility and instability of many potential therapeutic small & large molecules within the biological systems and systemic toxicity of chemotherapeutic agents has necessitated the need for nano-preparations to optimize drug delivery. The physiology of solid tumors presents numerous challenges for successful therapy. However, it also offers unique opportunities for the use of nanotechnology. Nanoparticles, up to 400 nm in size, have shown great promise for carrying, protecting and delivering potential therapeutic molecules with diverse physiological properties. In this review, various factors responsible for the MDR and the use of nanotechnology to overcome the MDR, the use of spheroid culture as well as the current technique of producing microtumor tissues in vitro are discussed in detail.
Insights
Multidrug resistance in cancer hinders chemotherapy. Nanotechnology offers a promising approach to overcome this challenge by optimizing drug delivery and improving therapeutic efficacy.
Area of Science:
- Oncology
- Nanotechnology
- Drug Delivery
Background:
- Multidrug resistance (MDR) is a major obstacle in cancer chemotherapy, driven by cellular and physiological factors.
- These factors include efflux transporters, apoptosis defects, altered targets, high interstitial pressure, low pH, and irregular tumor vasculature.
- Poor drug solubility, instability, and systemic toxicity further complicate effective cancer treatment.
Purpose of the Study:
- To review the multifaceted factors contributing to multidrug resistance in cancer.
- To explore the application of nanotechnology in overcoming multidrug resistance.
- To discuss spheroid culture and in vitro microtumor models for studying MDR.
Main Methods:
- Literature review of factors causing multidrug resistance.
- Analysis of nanotechnology-based strategies for drug delivery in cancer.
- Examination of spheroid culture and microtumor tissue production techniques.
Main Results:
- Nanoparticles (up to 400 nm) show potential for carrying and delivering therapeutic molecules.
- Nanotechnology can address challenges posed by tumor physiology and drug properties.
- Spheroid cultures and in vitro microtumor models offer valuable research platforms.
Conclusions:
- Nanotechnology presents a viable strategy to overcome multidrug resistance in cancer therapy.
- Optimized drug delivery systems are crucial for enhancing treatment outcomes.
- Advanced in vitro models are essential for studying and combating MDR.
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