Related Experiment Video
Updated: Jul 18, 2026

06:49
Methods for Studying Uterine Contributions to Pregnancy Establishment in an Ovariectomized Mouse Model
Published on: April 7, 2023
Racemic progesterone: predicted in silico and produced in the solid state
Robert W Lancaster1, Panagiotis G Karamertzanis, Ashley T Hulme
1Department of Chemistry, University College London, London, UKWC1H 0AJ.
Summary
Researchers computationally predicted and validated a specific crystal structure formed by mixing synthetic and natural progesterone. This finding advances understanding of steroid crystallization and drug formulation.
Area of Science:
- Crystallography
- Computational Chemistry
- Organic Chemistry
Background:
- Progesterone is a vital steroid hormone.
- Understanding steroid crystallization is crucial for pharmaceutical development.
- Chiral molecules and their mirror images (enantiomers) can form distinct crystal structures.
Purpose of the Study:
- To computationally predict the crystal structure formed by mixing progesterone and its synthetic mirror image (enantiomer).
- To experimentally validate the computational prediction of a specific racemic crystal structure.
Main Methods:
- Utilized computational modeling to predict the crystal packing of a progesterone enantiomer mixture.
- Performed experimental crystallization and structural analysis to confirm the predicted racemic structure.
Main Results:
- A specific racemic crystal structure was computationally predicted for the mixture of progesterone and its enantiomer.
- Experimental validation confirmed the formation of the predicted racemic crystal structure.
Conclusions:
- Computational predictions can accurately determine the crystal structures of chiral steroid mixtures.
- This work provides insights into the crystallization behavior of progesterone enantiomers.
- Validated methods for predicting and characterizing steroid crystal forms are essential for drug development.
Related Concept Videos
Production of Pharmaceuticals
Industrial insulin production uses genetically engineered E. coli expressing a proinsulin gene controlled by a tryptophan promoter and containing a methionine linker for later cleavage. The cells also carry ampicillin resistance for selective growth. Seed cultures are stored at −80 °C and production begins by thawing a small amount to inoculate starter cultures, which are progressively scaled to a 50,000-L bioreactor. In the bioreactor, E. coli grow in nutrient-rich media under sterile, tightly...
Intrauterine Drug Delivery Systems
Controlled-release systems for intravaginal and intrauterine drug delivery have been developed primarily for the administration of contraceptive steroid hormones. These delivery routes circumvent first-pass hepatic metabolism, thereby enhancing bioavailability and allowing for reduced systemic dosages compared to oral administration. Such approaches contribute to improved therapeutic efficacy and patient compliance, particularly in long-term contraceptive regimens.Intravaginal Drug Delivery...

