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Updated: Aug 17, 2026

Evaluating the Effectiveness of Cancer Drug Sensitization In Vitro and In Vivo
Published on: February 6, 2015
Conventional and prospective molecular targets in antitumour drug design. Concepts in antitumour research
1I. Institute of Pathology and Experimental Cancer Research, Semmelweis Medical University, Budapest, Hungary.
Abstract:
To introduce a rationale in a drug development program the molecular base of the pathological lesion must be carefully considered both for selecting test compounds and to apply the most appropriate assay systems. From the beginning of antitumour drug research the principal aim has always been to select chemical compounds which could selectively inhibit tumour growth. This strategy was in full harmony with the concept that tumours are build up by fast proliferating cells. Research based on this concept has resulted in the development of more than 40 cytostatic agents, which are rather diverse in their chemical properties, but all act on one of the molecular mechanisms participating in cell proliferation. However the unsatisfactory therapeutic responses which could be obtained by the cytostatic agents focused the attention on those molecular events in the tumour cells which may be more closely related to the progression of the malignant disease.
Insights
Understanding the molecular basis of cancer is crucial for developing effective anticancer drugs. This involves selecting appropriate compounds and assays to target tumor growth and progression, moving beyond traditional cytostatic agents.
Area of Science:
- Oncology
- Pharmacology
- Molecular Biology
Background:
- Anticancer drug development requires a deep understanding of the molecular underpinnings of pathological lesions.
- Historically, anticancer research focused on inhibiting rapidly proliferating tumor cells, leading to over 40 cytostatic agents.
- These agents target various molecular mechanisms involved in cell proliferation.
Purpose of the Study:
- To establish a rationale for drug development programs by considering the molecular basis of pathological lesions.
- To guide the selection of appropriate chemical compounds and assay systems for anticancer drug discovery.
- To shift focus towards molecular events critical for malignant disease progression, addressing limitations of current cytostatic agents.
Main Methods:
- Review of existing anticancer drug development strategies.
- Analysis of molecular mechanisms underlying tumor cell proliferation and disease progression.
- Evaluation of the efficacy of cytostatic agents in relation to therapeutic responses.
Main Results:
- The development of over 40 cytostatic agents targeting cell proliferation.
- Identification of limitations in therapeutic responses to existing cytostatic agents.
- Emerging focus on molecular events directly related to malignant disease progression.
Conclusions:
- A thorough understanding of the molecular basis of cancer is essential for rational drug development.
- Future anticancer drug discovery should prioritize targeting molecular events driving disease progression over general cell proliferation.
- This approach aims to improve therapeutic outcomes by addressing the complexities of malignant diseases.
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