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Eric Lameignere: Female Reproductive Tract-on-a-Chip Technology Could Transform Functional Sperm Selection
May 14, 2026, 10:07

Eric Lameignere: Female Reproductive Tract-on-a-Chip Technology Could Transform Functional Sperm Selection

Eric Lameignere, Co-Founder at MovaLife microrobotics, shared a post on LinkedIn:

“Reproducing nature: a microfluidic ‘Female Reproductive Tract on a Chip’

A Chinese research team describes an original experimental device for sperm selection: the Female Reproductive Tract on a Chip (FRToC), a biomimetic microfluidic system designed to replicate the key mechanisms of natural sperm selection occurring within the female reproductive tract.

Unlike conventional methods based on a single criterion, typically density or motility, FRToC relies on a multi-step functional selection, through a sequence of physiologically barriers.

The device consists of interconnected microchambers and microchannels made of biocompatible materials. Spermatozoa sequentially encounter:

  • narrow microchannels promoting boundary following
  • a viscoelastic region mimicking cervical mucus, selecting sperm capable of maintaining coherent motility under constraint a dense matrix simulating the cumulus oophorus environment surrounding the oocyte

The authors evaluated the biological impact of FRToC across several key parameters:

  • Sperm DNA fragmentation (DFI), measured by SCSA, decreases dramatically from initially high values (≈35–60%) to ~0.7%, compared to ~5% with conventional selction methods
  • Motility and kinematic parameters (VCL, VSL, VAP, LIN), assessed by CASA, are preserved
  • Intracellular oxidative stress, measured using ROS fluorescent probes, is significantly reduced, with enrichment in antioxidant enzymes such as catalase
  • Chromosomal integrity, assessed via single-cell CNV analysis, shows disappearance of segmental alterations observed pre-selection (up to 25% depending on patients)

The trade-off: FRToC yield remains low — around 1 to 5% of initial spermatozoa .

At MovaLife microrobotics, we follow these biomimetic approaches with great interest. While yield remains a critical parameter that may limit applicability in conventional IVF, it could make such technologies particularly relevant for ICSI, where selection quality outweighs quantity.”

Read more.

Title: Female Reproductive Tract-on-a-Chip for Selecting Sperm with Ultra-Low DNA Fragmentation Index

Authors: Jing Dai, Han Shan, Yifan Gu, Mingde Zheng, Li Lou, Pingyuan Xie, Shen Zhang, Zheng Sun, Fei Gong, Guangxiu Lu, Ge Lin, Zeyu Chen

Eric Lameignere: Female Reproductive Tract-on-a-Chip Technology Could Transform Functional Sperm Selection

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antioxidant enzymes biomimetic microfluidic system cervical mucus Chromosomal Integrity CNV analysis coherent motility conventional IVF conventional methods critical parameter Eric Lameignere experimental device Fei Gong female reproductive tract Fertility Fertility News FRToC Ge Lin Guangxiu Lu Han Shan interconnected microchambers Jing Dai Kinematic parameters Li Lou LIN matrix simulating microchannels Mingde Zheng MovaLife Microrobotics oxidative stress physiologically barriers Pingyuan Xie Reproducing nature reproductive health Reproductive Medicine ROS fluorescent probes SCSA Shen Zhang Sperm DNA Fragmentation Sperm Selection VAP VCL VSL Yifan Gu Zeyu Chen Zheng Sun
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