Integrating Environmental Factors in Genetic Research: A New Perspective

It has long been known that there is a complex interplay between genetic factors and environmental influences in shaping behavior. Recently it has been found that genes governing behavior in the brain operate within flexible and contextually responsive regulatory networks. However, conventional genome-wide association studies (GWAS) often overlook this complexity, particularly in humans where controlling environmental variables poses challenges.

In a new perspective article publishing February 27th in the open-access journal PLOS Biology by researchers from the University of Illinois Urbana-Champaign and Rutgers University, US, the importance of integrating environmental effects into genetic research is underscored. The authors discuss how failure to do so can perpetuate deterministic thinking in genetics, as historically observed in the justification of eugenics movements and, more recently, in cases of racially motivated violence.

The authors propose expanding GWAS by incorporating environmental data, as demonstrated in studies on aggression in fruit flies, in order to get a broader understanding of the intricate nature of gene-environment interactions. Additionally, they advocate for better integration of insights from animal studies into human research. Animal experiments reveal how both genotype and environment shape brain gene regulatory networks and subsequent behavior, and these findings could better inform similar experiments with people. 

Advances in genomic technology have really illustrated how changes in the environment lead to changes not only in behavior, but in the expression of genes, in a way that's not determined just by heredity. We now understand that even the same genes can function very differently across individuals depending on their expression."

Matthew Hudson, co-author, professor of crop sciences at Illinois

Furthermore, the authors stress the importance of multidisciplinary collaboration to understand the roots of behavior, especially among the animal and human research communities. Co-author Rina Bliss, professor of sociology at Rutgers, added, "We really need these kinds of collaborations among social scientists and biologists to illuminate the complexity of gene-environment interactions, especially as they relate to human behavior." The article also suggests that emerging technologies such as brain organoids and new forms of brain imaging will be necessary to elucidate the molecular mechanisms linking genetic and environmental influences on behavior.

Ultimately, the authors stress that a paradigm shift is needed in human social and behavioral genomics towards a nuanced comprehension of gene-environment interactions. "Studying the roots of behavior holds great potential for insights that can help better understand brain function, in health and disease. We hope this article helps researchers to make the most of the opportunities while avoiding reductionist pitfalls," said coauthor Gene Robinson, Director of the Carl R. Woese Institute for Genomic Biology and professor of entomology and neuroscience at Illinois.

The authors suggest that a holistic perspective and fostering interdisciplinary collaboration could help researchers navigate the complexities of human behavior, while mitigating the risks associated with deterministic thinking in genetics.fic funding for this work.

Source:
Journal reference:

Robinson, G. E., et al. (2024) The genomic case against genetic determinism. PLOS Biology. doi.org/10.1371/journal.pbio.3002510.

Comments

The opinions expressed here are the views of the writer and do not necessarily reflect the views and opinions of AZoLifeSciences.
Post a new comment
Post

While we only use edited and approved content for Azthena answers, it may on occasions provide incorrect responses. Please confirm any data provided with the related suppliers or authors. We do not provide medical advice, if you search for medical information you must always consult a medical professional before acting on any information provided.

Your questions, but not your email details will be shared with OpenAI and retained for 30 days in accordance with their privacy principles.

Please do not ask questions that use sensitive or confidential information.

Read the full Terms & Conditions.

You might also like...
Rare YKT6 Gene Variants Linked to New Neurological Disorder