Integrated microbial and metabolic coordination orchestrates antler growth induced by guar gum and xylo-oligosaccharides.
Li. Songze S; Deng. Ruijia R; Sang. Jianan J; Zhu. Yuhang Y; Ma. Cuiliu C; Nan. Weixiao W; Wang. Tao T; Si. Huazhe H; Li. Zhipeng Z
Key Findings
- Guar gum and xylo‑oligosaccharides markedly alter the rumen microbiome, increasing butyrate‑producing bacteria and bile‑acid‑modifying microbes
- These microbiome shifts raise circulating IGF‑1, BMP2, FGF2 and specific bile acids such as taurohyodeoxycholic acid
- Elevated taurohyodeoxycholic acid directly promotes osteogenic differentiation of mesenchymal cells, linking gut metabolites to bone growth
Practical Outcomes
- Incorporating prebiotic fibers like guar gum or xylo‑oligosaccharides may modestly boost IGF‑1 and support bone or muscle health via gut‑microbiome pathways. Start with small, tolerable doses (e.g., 5‑10 g/day) and monitor any digestive effects. Human trials are needed, so treat this as a low‑risk experimental supplement rather than a proven protocol.
Summary
A study in deer showed that feeding the prebiotic fibers guar gum and xylo‑oligosaccharides reshapes the gut microbiome, boosts short‑chain fatty acids, and raises blood levels of IGF‑1 and other growth factors, which together speed up antler bone growth. While the work is animal‑based, it hints that similar fiber‑driven microbiome changes might help increase IGF‑1 and support bone or muscle health in people, though human data are still missing.
Abstract
Antlers are a unique mammalian bone organ characterized by rapid growth, a process critically dependent on nutrient availability and the gastrointestinal tract microbiome. Polysaccharides and oligosaccharides shape microbiome output, but their roles in antler development remain unclear. Here, the strongest short-chain fatty acid effect was found with guar gum (GG) and xylo-oligosaccharides, which altered the rumen microbiome in vitro incubations with six polysaccharides and oligosaccharides. GG enriched Lachnospiraceae and Oscillospiraceae, and glycoside hydrolase families, enhancing butyrate biosynthesis and amino acid catabolism, while xylo-oligosaccharides selectively enriched Selenomonadaceae, supporting vitamin and fatty acid biosynthesis in vivo in the rumen. GG increased the fecal microbiome involved in bile acid deconjugation and dihydroxylation. Targeted metabolomics demonstrated that GG elevated the circulating levels of bile acids (chenodeoxycholic acid, deoxycholic acid, taurohyodeoxycholic acid) and osteogenic factors (IGF-1, BMP2, FGF2), and resulted in free fatty acid changes in the serum. Transcriptomics and RT-PCR revealed activation of angiogenic pathways in reserve mesenchyme and osteogenic signaling in mineralized cartilage of antlers. In vitro assays demonstrated that taurohyodeoxycholic acid significantly promoted osteogenic differentiation of mesenchymal cells. Our results revealed the distinct microbial adaptations of specific carbohydrates and elucidated a "GIT-antler" axis intervention for enhancing bone growth in mammals.
Study Information
pubmed
2025
2025-10-22T00:00:00.000Z
10.1016/j.carbpol.2025.124586
111