• HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
Friday, October 24, 2025
BIOENGINEER.ORG
No Result
View All Result
  • Login
  • HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
  • HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
No Result
View All Result
Bioengineer.org
No Result
View All Result
Home NEWS Science News Biology

A new approach to predicting the binding properties of forever chemicals (PFAS) and human PPARα

Bioengineer by Bioengineer
January 16, 2024
in Biology
Reading Time: 3 mins read
0
Screening of PFAS binding potential to PPARα using an explainable machine learning approach
Share on FacebookShare on TwitterShare on LinkedinShare on RedditShare on Telegram

Per- and polyfluoroalkyl substances (PFAS) are widely used in various products as water-repellents and stain-resistant coatings. PFAS are called “Forever chemicals” due to their exceptional thermal and chemical stability, and have been found globally in the environment, humans, and wildlife. Long-chain perfluoroalkyl acids, including perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS), are persistent, bioaccumulative, and toxic. Globally, PFOA- and PFOS-related substances are regulated by the Stockholm Convention on Persistent Organic Pollutants (POPs). A key toxicological aspect of PFAS, especially PFOA and PFOS, is their disruption of lipid metabolism through interaction with the PPARα, essential in lipid metabolism, energy balance, and cell differentiation. PFAS binding to PPARα disrupts signaling pathways, causing various biological effects. However, the potential hazards (e.g., bioactivity, bioaccumulation, and toxicity) of thousands of PFAS types, including next-generation alternative PFAS is limited. In this study, we developed an explainable machine learning approach to predict the binding affinity of PFAS-PPARα.

Screening of PFAS binding potential to PPARα using an explainable machine learning approach

Credit: Graduate School of Agriculture, Ehime University

Per- and polyfluoroalkyl substances (PFAS) are widely used in various products as water-repellents and stain-resistant coatings. PFAS are called “Forever chemicals” due to their exceptional thermal and chemical stability, and have been found globally in the environment, humans, and wildlife. Long-chain perfluoroalkyl acids, including perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS), are persistent, bioaccumulative, and toxic. Globally, PFOA- and PFOS-related substances are regulated by the Stockholm Convention on Persistent Organic Pollutants (POPs). A key toxicological aspect of PFAS, especially PFOA and PFOS, is their disruption of lipid metabolism through interaction with the PPARα, essential in lipid metabolism, energy balance, and cell differentiation. PFAS binding to PPARα disrupts signaling pathways, causing various biological effects. However, the potential hazards (e.g., bioactivity, bioaccumulation, and toxicity) of thousands of PFAS types, including next-generation alternative PFAS is limited. In this study, we developed an explainable machine learning approach to predict the binding affinity of PFAS-PPARα.

We obtained SMILES data for 6,798 PFAS from the U.S. EPA database and used Molecular Operating Environment (MOE) to calculate 206 molecular descriptors and binding affinity (i.e., S-score) to PPARα for each PFAS. Results revealed that 4,089 PFAS exhibited S-scores lower than those of both PFOA (S-score = -5.03 kcal/mol) and PFOS (S-score = -5.09 kcal/mol). Through the systematic and objective selection of important molecular descriptors, we developed a machine learning model with good predictive performance using only three descriptors (R2=0.72). The molecular size (b_single) and electrostatic properties (BCUT_PEOE_3 and PEOE_VSA_PPOS) are important for PPARα-PFAS binding. Alternative PFAS are considered safer than their legacy predecessors. However, we found that alternative PFAS with many carbon atoms and ether groups exhibited a higher binding affinity for PPARα than legacy PFOA and PFOS. Our novel approach outperforms traditional QSAR and machine learning approaches in terms of interpretability, thereby providing deeper insight into the molecular mechanism of PFAS toxicity.

In the present study, the machine learning model successfully predicted the binding affinity of PFAS to human PPARα and predicted key molecular characteristics in the binding. Although this study focused on PFAS-PPARα binding, our approach is also relevant to other ligand-receptor binding and other structure-property relationship studies. This study was limited to ligand-receptor binding. Future research could improve the accuracy of toxicity predictions by incorporating more features. Such studies would involve not only the structural details of PFAS but also information about downstream signal transduction pathways, thereby potentially enabling more precise toxicity predictions. However, limitations exist. We focused on the interaction with PPARα, whereas PFAS could induce toxicity through other receptors. Notably, a high binding score does not always reflect toxicity. Thus, the actual toxicity must be experimentally verified. Despite these limitations, our method allows for rapid, cost-effective PFAS screening, providing a preliminary understanding their potential toxicity and guiding further in-depth experimental investigations.



Journal

Environmental Science & Technology

DOI

10.1021/acs.est.3c06561

Share12Tweet8Share2ShareShareShare2

Related Posts

blank

Boosting Yeast Efficiency as Biofactories for Valuable Plant Compound Production

October 24, 2025
Boosting Plant Growth: Indigenous Bacteria Against Nematodes

Boosting Plant Growth: Indigenous Bacteria Against Nematodes

October 24, 2025

Chemoenzymatic Creation of Medium- and Long-Chain TAGs

October 24, 2025

Indigenous Bacteria Boost Plant Growth, Combat Nematodes

October 24, 2025

POPULAR NEWS

  • Sperm MicroRNAs: Crucial Mediators of Paternal Exercise Capacity Transmission

    1280 shares
    Share 511 Tweet 320
  • Stinkbug Leg Organ Hosts Symbiotic Fungi That Protect Eggs from Parasitic Wasps

    309 shares
    Share 124 Tweet 77
  • ESMO 2025: mRNA COVID Vaccines Enhance Efficacy of Cancer Immunotherapy

    188 shares
    Share 75 Tweet 47
  • New Study Suggests ALS and MS May Stem from Common Environmental Factor

    133 shares
    Share 53 Tweet 33

About

We bring you the latest biotechnology news from best research centers and universities around the world. Check our website.

Follow us

Recent News

Knee Savers: Impact on Knee Joint Stress

FDA Greenlights Innovative Menopause Treatment Targeting Hot Flashes and Night Sweats

Evaluating Stakeholder Insights on Malaria Prevention in Malawi

Subscribe to Blog via Email

Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Join 66 other subscribers
  • Contact Us

Bioengineer.org © Copyright 2023 All Rights Reserved.

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In
No Result
View All Result
  • Homepages
    • Home Page 1
    • Home Page 2
  • News
  • National
  • Business
  • Health
  • Lifestyle
  • Science

Bioengineer.org © Copyright 2023 All Rights Reserved.