As a company specializing in advanced therapeutic drug discovery, CD Formulation understandS the critical role of toxicology analysis in nucleic acid drug development. With an experienced toxicology research team, advanced analytical instruments, and technology platforms, we are able to provide our clients with comprehensive toxicology solutions for nucleic acid drugs.
Toxicology is the study of the damage that drugs may cause to the organism under certain conditions. It is an essential aspect of nucleic acid drug development, crucial for the initial clinical trials of new drugs, and holds significant importance for identifying and managing clinical risks. The toxicity assessment of nucleic acid drugs typically involves safety pharmacology experiments, general toxicology experiments, genotoxicity experiments, reproductive toxicity experiments, and carcinogenicity experiments. Technical guidelines encompass relevant guidelines on drug safety evaluation from the U.S. FDA and ICH. A systematic toxicological analysis of nucleic acid drugs aids in recognizing and managing potential safety risks, serving as a fundamental basis for optimal drug design, preclinical evaluation, and clinical application. This process ensures that these innovative therapeutic approaches are safe and effective, ultimately benefiting patients.
Fig.1 In vitro models of target-organ toxicity. (Pognan F, et al., 2023)
Based on FDA expectations and regulatory guidance, our drug toxicology testing will meet all of your specific requirements. We have years of experience providing toxicology, pharmacology, and analytical services to the nucleic acid formulation industry. With a team of experts who have extensive experience in nucleic acid formulation testing, we can assist you with everything from evaluating drug development to scale-up. Our services include:
The program includes safety pharmacology experiments on the respiratory, central, and cardiovascular systems in a variety of animal species, such as mice, rats, and monkeys. We can conduct in vitro hERG experiments to further evaluate the cardiovascular risks that the drug may induce. Apart from the three core systems mentioned above, additional hepatic and renal safety pharmacology experiments also need to be considered because some nucleic acid drugs are metabolized by the liver and excreted by the kidneys, respectively.
General toxicology encompasses single and repeated dose studies of various durations, including up to 2-year carcinogenicity studies. Depending on client and regulatory requirements, we are capable of conducting both GLP and non-GLP studies of different species, scale, frequency, intricacy, and adherence to regulations.
In addition to traditional assays, we can analyze the efficacy endpoints of nucleic acid drugs to further confirm the drug's ability to bind to the target mRNA in tissues and generate the appropriate pharmacological effect during extended administration.
Genotoxicity studies are crucial components of preclinical safety evaluations of drugs and are closely linked to other studies, particularly toxicology assessments like carcinogenicity tests and reproductive toxicity tests. They serve as a vital step for drugs to progress into clinical trials and marketing. Our genotoxicity study services encompass the Ames test, Mini-Ames test, chromosomal aberration test, and micronucleus test.
Nucleic acid drugs typically follow a segmented reproduction testing strategy, which includes fertility and early embryo developmental toxicity tests, embryo-fetus developmental toxicity tests, and perinatal developmental toxicity tests. The animal species chosen are predominantly mice, rats, and rabbits, and the dosing method generally mirrors the intended clinical route of administration. Furthermore, toxicology experiments on young animals are also conducted based on the target population.
In accordance with ICH S1A guidelines, we provide carcinogenicity studies for nucleic acid drugs. Long-term carcinogenicity studies are usually carried out in rats over a 2-year period, while 6-month carcinogenicity studies are conducted in transgenic mice using the clinically recommended route of administration.
Platforms | Descriptions |
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Animal Model Platform | Acute, sub-acute, and chronic toxicity tests are conducted using small laboratory animals such as mice and rats to assess the systemic toxicity of drugs. |
Molecular Biology Platform | We utilize RT-PCR, Western blot, and other techniques to detect the effects of nucleic acid drugs on cell signaling pathways and gene expression. |
Immunology Platform | Evaluate the activity of immune cells and inflammatory response using flow cytometry, ELISA, and other techniques. |
Genetic Toxicology Platform | Detect genotoxicity and assess potential DNA damage using the Ames test, mouse micronucleus test, and other techniques. |
Biochemical Analysis Platform | The automatic biochemical analyzer is used to measure the liver and kidney function indexes, reflecting organ toxicity. |
Metabolic Kinetics Platform | Analyze the absorption, distribution, metabolism, and excretion of drugs in the body using LC-MS/MS. |
Fig.2 Flow chart of nucleic acid drugs toxicology analysis. (CD Formulation)
With our professional team and advanced technology, CD Formulation is committed to providing high-quality and reliable toxicological analysis of nucleic acid drugs for our clients. This will contribute to the safe and effective application of this emerging therapy for the benefit of patients. Contact us and we can help you with drug development.
Technology: Toxicology analysis for drug discovery
Journal: Toxicologic pathology
IF: 1.4
Published: 2010
Results:
Most of the drug candidates currently in development are directed at cancer therapy. Many of these chemotherapeutic drug candidates target new targets, often with unique toxicological profiles. Since many of these new targets are not specific to cancer cells, therapeutic margins may not exist. Decision making in such cases is one of the most challenging issues that any pharmacotoxicologist/pathologist or regulator will face. Non-clinical development scientists must compress time to provide treatment options for cancer patients who have failed conventional therapy. To support this goal, the U.S. Food and Drug Administration created an oncology-specific paradigm for nonclinical testing and introduced strategies to accelerate the development and approval of successful drug candidates. Drug toxicology testing strategies must not only meet the minimum requirements of the regulations, but also strive to reduce the high attrition rates of current oncology drug candidates.
Fig.3 Toxicology/pathology activities to support oncology drug discovery. (Maziasz T, et al., 2010)
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