The DOI matches its Crossref record; 40 of the 40 references it cites were found in a registry or an index.
High-accuracy determination of internal circadian time from a single blood sample
Open accessAbstract
BACKGROUND: The circadian clock is a fundamental and pervasive biological program that coordinates 24-hour rhythms in physiology, metabolism, and behavior, and it is essential to health. Whereas therapy adapted to time of day is increasingly reported to be highly successful, it needs to be personalized, since internal circadian time is different for each individual. In addition, internal time is not a stable trait, but is influenced by many factors, including genetic predisposition, age, sex, environmental light levels, and season. An easy and convenient diagnostic tool is currently missing. METHODS: To establish a validated test, we followed a 3-stage biomarker development strategy: (a) using circadian transcriptomics of blood monocytes from 12 individuals in a constant routine protocol combined with machine learning approaches, we identified biomarkers for internal time; and these biomarkers (b) were migrated to a clinically relevant gene expression profiling platform (NanoString) and (c) were externally validated using an independent study with 28 early or late chronotypes. RESULTS: We developed a highly accurate and simple assay (BodyTime) to estimate the internal circadian time in humans from a single blood sample. Our assay needs only a small set of blood-based transcript biomarkers and is as accurate as the current gold standard method, dim-light melatonin onset, at smaller monetary, time, and sample-number cost. CONCLUSION: The BodyTime assay provides a new diagnostic tool for personalization of health care according to the patient's circadian clock. FUNDING: This study was supported by the Bundesministerium für Bildung und Forschung, Germany (FKZ: 13N13160 and 13N13162) and Intellux GmbH, Germany.
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“We chose to use peripheral blood monocytes as source material for gene expression profiling, because (a) blood is an easily accessible source of human cells and (b) monocytes constitute a homogenous blood cell population and have been shown to possess a high-amplitude circadian clock (24, 25) in contrast to other PBMC…”
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Circadian rhythms and disorders of the timing of sleep
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Circadian disruption: what do we actually mean?
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Melatonin effects on glucose metabolism: time to unlock the controversy
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Metadata
- Authors
- Wittenbrink, N., Ananthasubramaniam, B., Münch, M., Koller, B., Maier, B., Weschke, C., Bes, F., de Zeeuw, J., Nowozin, C., Wahnschaffe, A., Wisniewski, S., Zaleska, M., Bartok, O., Ashwal-Fluss, R., Lammert, H., Herzel, H., Hummel, M., Kadener, S., Kunz, D., & Kramer, A.
- Venue
- Journal of Clinical Investigation
- Published
- 2018-08-06
- Volume
- 128
- Issue
- 9
- Pages
- 3826-3839
- ISSN
- 0021-9738 (ISSN-L)
- 1558-8238
- OpenAlex
- W2810448772
- Cited by
- 266
- References
- 40
- FWCI
- 13.16
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Wittenbrink, N., Ananthasubramaniam, B., Münch, M., Koller, B., Maier, B., Weschke, C., Bes, F., de Zeeuw, J., Nowozin, C., Wahnschaffe, A., Wisniewski, S., Zaleska, M., Bartok, O., Ashwal-Fluss, R., Lammert, H., Herzel, H., Hummel, M., Kadener, S., Kunz, D., & Kramer, A. (2018). High-accuracy determination of internal circadian time from a single blood sample. Journal of Clinical Investigation. https://doi.org/10.1172/jci120874
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