What question did this study set out to answer?

To establish a phenotypically integrated biosynthetic model that explains how genetic variation and enzyme distribution generate heparan sulfate diversity in health and disease.

December 4, 2024Open Access

Genetic variability in proteoglycan biosynthetic genes reveals new facets of heparan sulfate diversity.

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Authors

MOMohand Ouidir OuidjaUniversité Paris-Est Créteil DBDenis BiardUniversité Paris-Est Créteil MHMinh Bao HuynhUniversité Paris-Est Créteil

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Implication

Pathway modeling uncovers distinct ubiquitous and specialized heparan sulfate synthesis branches in humans and mice, explaining disease mechanisms and linkeropathy phenotypes.

Key Points

To establish a phenotypically integrated biosynthetic model that explains how genetic variation and enzyme distribution generate heparan sulfate diversity in health and disease.
Analyzed phenotype and gene expression profiles across 51 genes within the proteoglycan biosynthetic pathway using human genetic data and mouse knockout models.
Modeled enzymatic pathway flux, substrate preferences, and feedback loops controlling heparan sulfate and chondroitin sulfate biosynthesis.
Ubiquitous enzymes (NDST1, HS2ST, and HS6ST) assemble baseline heparan sulfate chains essential for survival, embryonic development, and general tissue homeostasis.
Tissue-restricted enzymes (NDST2–4, HS6ST2–3, and HS3ST1–6) create specialized sulfation patterns that modulate cognition, adaptive behaviors, and disease vulnerability.
Enzymatic substrate hierarchies drive preferential synthesis of heparan sulfate over chondroitin sulfate from a shared tetrasaccharide linker, explaining distinct clinical linkeropathy phenotypes.

Cite This Study

Ouidja et al. (2024) studied this question.

synapsesocial.com/papers/6a88663dfc0635f4eccf11a1 https://doi.org/10.1042/ebc20240106

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Implication

Pathway modeling uncovers distinct ubiquitous and specialized heparan sulfate synthesis branches in humans and mice, explaining disease mechanisms and linkeropathy phenotypes.

Genetic variability in proteoglycan biosynthetic genes reveals new facets of heparan sulfate diversity.

Discussion

Member takes

Implication

Key Points

Cite This Study

Genetic variability in proteoglycan biosynthetic genes reveals new facets of heparan sulfate diversity.

Discussion

Member takes

Implication

Key Points

Cite This Study

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