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Updated: Jul 16, 2026

06:07
Screening for Phytoestrogens using a Cell-based Estrogen Receptor β Reporter Assay
Published on: June 7, 2020
[Lignan: an important natural estrogen from plants]
Xin Li1, Jian-Ping Yuan, Xin Liu
1College of Life Sciences and Food Engineering Research Center of State Education Ministry, Sun Yat-Sen University, Guangzhou 510275, China.
Summary
Lignans, plant compounds with estrogenic effects, show potential in preventing hormone-related cancers. Further research is needed to understand their anticancer mechanisms, genic toxicity, and optimal dosage for health benefits.
Area of Science:
- Phytochemistry and Pharmacology
- Molecular Biology
- Toxicology
Context:
- Lignans are phytoestrogens with antioxidant, antitumor, and antiviral properties.
- They show promise in preventing hormone-dependent diseases like breast and prostate cancer.
- Key scientific questions remain regarding their genic toxicity, anticancer mechanisms, and effective dosages.
Purpose:
- To systematically review existing literature on lignans.
- To cover their classification, distribution, metabolism, pharmacological activities, and analytical methods.
- To provide a prospective outlook for future lignan research.
Summary:
- This review consolidates current knowledge on lignans, highlighting their diverse bioactivities and potential health benefits, particularly in hormone-related diseases.
- It addresses critical knowledge gaps concerning the genotoxicity of lignan metabolites, detailed anticancer mechanisms, and dosage requirements for efficacy.
- The paper examines various aspects including lignan classification, natural distribution, metabolic pathways, pharmacological effects, and analytical techniques.
Impact:
- Provides a comprehensive overview for researchers in nutrition, pharmacology, and oncology.
- Identifies crucial areas for future investigation into lignan's therapeutic potential and safety.
- Aims to guide the development of lignan-based strategies for disease prevention and treatment.
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Plant Hormones
Plant hormones—or phytohormones—are chemical molecules that modulate one or more physiological processes of a plant. In animals, hormones are often produced in specific glands and circulated via the circulatory system. However, plants lack hormone-producing glands.
Plant Hormones
Plant hormones—or phytohormones—are chemical molecules that modulate one or more physiological processes of a plant. In animals, hormones are often produced in specific glands and circulated via the circulatory system. However, plants lack hormone-producing glands.
Gonadal and Placental Hormones
The gonads, namely the testes in males and the ovaries in females, are pivotal in producing gonadal hormones that orchestrate the intricate processes of sexual development and reproduction.
In males, testosterone is the primary gonadal androgen. It plays a central role in the maturation of male reproductive organs — the penis and testes. Additionally, testosterone is instrumental in the development of secondary sexual characteristics — a deep voice as well as facial and pubic hair growth — and...
In males, testosterone is the primary gonadal androgen. It plays a central role in the maturation of male reproductive organs — the penis and testes. Additionally, testosterone is instrumental in the development of secondary sexual characteristics — a deep voice as well as facial and pubic hair growth — and...
Types of Hormones
Hormones are classified into four main groups: steroids, eicosanoids, amino acid-based derivatives, and peptide hormones.
Steroids and eicosanoids fall under the category of lipid-soluble hormones. Steroids are derived from cholesterol and feature four interconnected carbon rings with variable side chains. Notable examples include estradiol from ovaries and testosterone from testes, exemplifying the critical roles of these lipid-soluble hormones in reproductive physiology. Eicosanoids, derived...
Steroids and eicosanoids fall under the category of lipid-soluble hormones. Steroids are derived from cholesterol and feature four interconnected carbon rings with variable side chains. Notable examples include estradiol from ovaries and testosterone from testes, exemplifying the critical roles of these lipid-soluble hormones in reproductive physiology. Eicosanoids, derived...
Transducer Mechanism: Nuclear Receptors
Nuclear receptors, or NRs, are unique transcription factors that regulate gene transcription and affect the cellular pathways involved in reproduction, development, or metabolism. Their ability to be stimulated by small lipophilic ligands and control vital cellular processes makes them ideal drug targets. Nearly 10-15% of currently prescribed drugs target these receptors.
About 48 different soluble family members of nuclear receptors are identified that can be divided into two main classes:
About 48 different soluble family members of nuclear receptors are identified that can be divided into two main classes:
Hormonal Regulation
Hormones regulate a significant portion of digestion through activation of the neuroendocrine system. The neuroendocrine system of digestion contains many different hormones all with multiple functions that are both, directly and indirectly, involved in digestion.

