Macaca fascicularis, or the cynomolgus macaque, is widely used in biomedical research because many aspects of its anatomy, physiology, genetics, and immune function are relevant to corresponding human systems. Cynomolgus macaque samples therefore support comparative and translational research in fields such as immunology, toxicology, pharmacology, neuroscience, and biomarker research. However, similarities and differences are endpoint-specific, so results obtained with cynomolgus macaque materials should be interpreted within the context of the particular assay and research question. In this blog post, we discuss characteristics of cynomolgus macaque samples and selected research applications for serum and other blood-derived materials.
Cyno Monkey Samples
Cynomolgus macaques are evolutionarily closer to humans than commonly used rodent research species, but genetic and physiological similarity does not ensure that a particular experimental result will translate directly to humans. The suitability of cynomolgus macaque samples depends on the biological pathway, analyte, assay, and study objective. Comparative studies using these samples can help researchers characterize species similarities and differences, assess assay performance, and generate hypotheses for subsequent studies using human samples.
Cynomolgus macaque blood-derived materials can serve as research samples, assay matrices, or controls during exploratory assay development when they are appropriate for the target and method. For example, cynomolgus macaque peripheral blood mononuclear cells have been used in in vitro studies of Fc-dependent functions such as antibody-dependent cellular cytotoxicity (ADCC). Researchers should account for donor-to-donor and species-related variability, including genetic variation that may affect Fc receptor-associated ADCC, rather than assuming that results will directly predict responses in human cells.
Cynomolgus macaque plasma and serum can be used to characterize analytes and establish study-specific baseline values or reference intervals. Those values may vary with factors such as age, sex, housing conditions, sedation protocol, collection method, and analytical platform. Accordingly, reference data should be matched to the relevant population and method and should not be presented as predictive of results in human samples.
Cyno Monkey Serum
Serum prepared from cynomolgus macaque blood can be used as an experimental matrix, source of endogenous analytes, control material, or reagent in appropriately designed in vitro research assays. Its suitability for ELISA, ELISpot, western blotting, complement assays, or other methods depends on the specific protocol, analyte, validation plan, and required functional activity; serum should not be described generically as a blocking reagent without product- and method-specific support. Studies of cynomolgus macaque complement have identified both similarities to and quantitative differences from human complement. For example, Xu and colleagues reported nearly identical regulation by human decay-accelerating factor in the tested human and cynomolgus sera, while several measured complement titers differed. These findings support the use of cynomolgus complement serum in defined comparative research applications but do not establish general equivalence to human complement serum.
These materials are intended for laboratory research use only and are not intended for diagnostic, therapeutic, prophylactic, or other clinical use. The examples discussed here describe research applications and do not establish that a particular product is suitable for every assay or experimental system.
If you are looking for cynomolgus macaque materials for laboratory research, Innovative Research offers ELISA kits, purified proteins, serum, complement serum, plasma, whole blood, urine and other biofluids, cerebrospinal fluid, lysates, and other products. Product availability, specifications, and suitability vary by material and intended research method. Review the applicable product information and certificate of analysis before use, and contact sales@innov-research.com to discuss your research requirements. For Research Use Only. Not for use in diagnostic procedures. All products are for research use only and are not intended for diagnostic, therapeutic, prophylactic, or other clinical use.
Citations
Higashino A, Sakate R, Kameoka Y, et al. Whole-genome sequencing and analysis of the Malaysian cynomolgus macaque (Macaca fascicularis) genome. Genome Biology. 2012;13:R58. doi:10.1186/gb-2012-13-7-r58. PMID: 22747675.
Sanford JC, Wu H, Abdiche Y, Harney JA, Chaparro-Riggers J, Adkins K. Single nucleotide polymorphisms in the FcγR3A and TAP1 genes impact ADCC in cynomolgus monkey PBMCs. Immunogenetics. 2017;69:241-253. doi:10.1007/s00251-017-0970-1. PMID: 28154890. Bakker J, Maaskant A, Wegman M, et al. Reference intervals and percentiles for hematologic and serum biochemical values in captive bred rhesus and cynomolgus macaques. Animals. 2023;13:445. doi:10.3390/ani13030445. PMID: 36766334.
Xu H, Kitano E, Sato Y, Kobayashi C, Firdawes S, Kitamura H, Fukuzawa M, Miyagawa S. Studies of monkey complement: measurement of cynomolgus monkey CH50, ACH50, C4, C2 and C3. Xenotransplantation. 2008;15:14-19. doi:10.1111/j.1399-3089.2007.00438.x. PMID: 18333909. Xu H, Kitano E, Sato Y, et al. Investigation of cynomolgus monkey complement. Transplantation Proceedings. 2008;40:607-608. doi:10.1016/j.transproceed.2008.01.008. PMID: 18374142.
Yue Zhao, Guowen Liu, Aida Angeles, Lora L. Hamuro, Kevin J. Trouba, Bonnie Wang, Renuka C. Pillutla, Binodh S. DeSilva, Mark E. Arnold, Jim X. Shen, Development and validation of a liquid chromatography tandem mass spectrometry assay for the quantitation of a protein therapeutic in cynomolgus monkey serum, Journal of Chromatography B, Volume 988, 2015, Pages 81-87, ISSN 1570-0232, https://doi.org/10.1016/j.jchromb.2015.02.007. (https://www.sciencedirect.com/science/article/pii/S1570023215000926)
Carrasco-Triguero M, Davis H, Zhu Y, Coleman D, Nazzal D, Vu P, Kaur S. Application of a Plug-and-Play Immunogenicity Assay in Cynomolgus Monkey Serum for ADCs at Early Stages of Drug Development. J Immunol Res. 2016;2016:2618575. doi: 10.1155/2016/2618575. Epub 2016 Mar 22. PMID: 27092313; PMCID: PMC4820625. https://pmc.ncbi.nlm.nih.gov/articles/PMC4820625/
