Endometrial Receptivity and HOX Gene Regulation
Summary
Endometrial receptivity denotes the brief physiological period in the mid-secretory phase when the uterine lining acquires the capacity to support embryo attachment and implantation. This state is orchestrated by a complex interplay of steroid hormones, transcription factors and signalling molecules. Among these, the homeobox (HOX) transcription factors, notably HOXA10 and HOXA11, play a pivotal role in directing endometrial differentiation. Their expression is induced by oestrogen and progesterone and is necessary for the regulation of downstream effectors such as β3-integrin, osteopontin and cytokines that facilitate stromal decidualisation, epithelial adhesion and immune modulation. Dysregulation of HOX gene expression or function—through genetic, epigenetic or post-translational mechanisms—has been implicated in infertility, recurrent implantation failure and uterine pathologies such as adenomyosis. Recent advances have elucidated multiple layers of HOX regulation, including mRNA methylation, protein phosphorylation, acetylation and interactions with non-coding RNAs. A deeper understanding of these processes holds promise for novel diagnostics to assess the ‘implantation window’, as well as targeted therapies to restore or enhance receptivity in assisted reproductive technologies. The global significance of this research extends to improving clinical pregnancy rates and offering insights into uterine health across diverse patient populations.
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Endometrial Receptivity and HOX Gene Regulation publication trend
The graph below shows the total number of articles in endometrial receptivity and hox gene regulation across all publications each year (not limited to Nature Index journals).
Technical terms
Endometrial receptivity: The transient physiological state of the endometrium that permits embryo attachment and implantation during a defined period in the menstrual cycle.
HOXA10: A homeobox transcription factor that regulates gene networks essential for endometrial differentiation, stromal decidualisation and epithelial adhesion.
Cytokine: A small secreted protein that mediates intercellular signalling in immune, inflammatory and tissue-remodelling processes.
STAT3: Signal transducer and activator of transcription 3; a transcription factor activated by phosphorylation in response to cytokines, which modulates target gene expression.
Phosphorylation: The enzymatic addition of a phosphate group to a protein, altering its activity, localisation or stability.
Deacetylation: The enzymatic removal of an acetyl group from a protein, affecting its conformation and function.
References
- Endometrial Injury Upregulates Expression of Receptivity Genes in Women with Implantation Failure. International Journal of Environmental Research and Public Health (2023).
- Decreased intracellular IL-33 impairs endometrial receptivity in women with adenomyosis. Frontiers in Endocrinology (2022).
- FHL1 mediates HOXA10 deacetylation via SIRT2 to enhance blastocyst-epithelial adhesion. Cell Death Discovery (2022).
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