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Updated: Sep 21, 2025

Parallel Measurement of Circadian Clock Gene Expression and Hormone Secretion in Human Primary Cell Cultures
Published on: November 11, 2016
CircadiOmics: circadian omic web portal.
Muntaha Samad1,2, Forest Agostinelli3, Tomoki Sato4
1Department of Computer Science, University of California Irvine, Irvine, CA 92697, USA.
Circadian rhythms are fundamental to biology, influencing cellular processes and homeostasis. CircadiOmics is a large database supporting research on these biological rhythms using omics data.
Area of Science:
- Biology
- Chronobiology
- Bioinformatics
Background:
- Circadian rhythms are endogenous biological processes influencing molecular, cellular, and physiological functions.
- Research into circadian rhythms is expanding rapidly due to their fundamental role in homeostasis.
- High-throughput omics data is crucial for understanding complex circadian patterns.
Purpose of the Study:
- To introduce CircadiOmics, a comprehensive repository and analysis web server for omics circadian time series data.
- To provide researchers with a centralized platform for accessing and analyzing large-scale circadian datasets.
- To facilitate the study of molecular oscillations and their role in biological systems.
Main Methods:
- The CircadiOmics database aggregates data from over 290 experiments.
- It includes more than 100 million measurements across diverse tissues, organs, and species.
- Data analysis involves deriving and comparing periodicity statistics (period, amplitude, phase, P-value, q-value) using BIO_CYCLE and JTK_CYCLE.
Main Results:
- CircadiOmics hosts the largest annotated repository of omics circadian time series data.
- It enables visualization and mining of datasets for over 20 unique tissues/organs and 11 species.
- Periodicity statistics are aggregated and displayed for comparative analysis of oscillating molecular species.
Conclusions:
- CircadiOmics serves as a cutting-edge web portal for circadian omics research.
- It supports global researchers by providing extensive data and analytical tools.
- The platform advances the understanding of biological rhythms and their impact on health and disease.
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