Related Experiment Video
Updated: Mar 27, 2026
10:07
Measuring Sperm Guidance and Motility within the Caenorhabditis elegans Hermaphrodite Reproductive Tract
Published on: June 6, 2019
13.1K
Sperm hyperactivation drives a circling-and-wandering swimming behavior.
Meisam Zaferani1,2,3, Yanis Baouche4, Yamilka Lago-Alvarez5
1Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ, USA. mzaferani@princeton.edu.
Nature Communications
|March 25, 2026
Summary
Sperm hyperactivation, a key to fertilization, involves distinct swimming patterns. This study reveals how circling-and-wandering motility aids sperm navigation in complex environments like the female reproductive tract.
Area of Science:
- Reproductive Biology
- Biophysics
- Cellular Motility
Background:
- Sperm undergo capacitation, including hyperactivation, for fertilization.
- The role of hyperactivation in sperm migration through the female reproductive tract is not fully understood.
Purpose of the Study:
- To investigate bull sperm hyperactivation and swimming dynamics in simulated female reproductive tract environments.
- To elucidate the mechanisms by which hyperactivation facilitates sperm migration.
Main Methods:
- Profiling bull sperm hyperactivation and swimming behavior.
- Utilizing microfluidic surfaces to mimic reproductive tract confinement.
- Employing stochastic simulations of active transport in porous media.
Main Results:
- Identified three sperm swim gaits: wandering, circling, and circling-and-wandering.
- Wandering sperm exhibit higher diffusivity than circling sperm.
- Circling-and-wandering motility enhances sperm spreading in complex geometries.
Conclusions:
- Wandering and circling sperm exhibit distinct interactions with surfaces.
- Circling-and-wandering behavior provides a flexible mechanism for sperm migration.
- Findings offer insights into the physical aspects of sperm transport in vivo.
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