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<p>The search for probiotic microorganisms that can be applied beyond gut health has advanced into areas that seek to promote longevity and to prevent neurodegenerative diseases. In this study, we have investigated non-<i>Saccharomyces</i> strains isolated from the Amazon, Cerrado, and Pantanal biomes and evaluated how they affect <i>Caenorhabditis elegans</i>. During our initial screening, based on increased body size and population, we selected eight yeast strains and characterized their cells. Then, we selected three of these strains for in vivo testing. <i>Cryptococcus sp._T038</i> and <i>Cryptococcus sp._T248</i> prolonged longevity and reduced the effects of thermal and oxidative stress in <i>C. elegans</i>. <i>Hanseniaspora opuntiae_W164</i> and <i>Saccharomyces boulardii_SB</i> delayed beta-amyloid-induced paralysis in <i>C. elegans CL4176</i>. The antioxidant genes of the <i>DAF-2/SKN-1</i> pathway were activated by <i>Cryptococcus_T038 and _T248</i> and <i>H. opuntiae_W164</i> in <i>C. elegans</i> strain <i>LD1171 (GCS-1p::GFP)</i> and by <i>Cryptococcus_T038</i>, <i>H. opuntiae_W164</i>, and <i>S. boulardii_SB</i> in <i>C. elegans</i> strain <i>CF1553 (SOD-3p::GFP).</i> These data reinforce that wild yeasts are potential functional probiotics.</p>

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Non-Saccharomyces yeasts contribute to longevity, mitigated protein toxicity, and protection against abiotic stress in Caenorhabditis elegans

  • 期刊论文

  • 发表日期：

    2026年1月20日

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  • Juliana Ferreira de Morais dos Santos,
  • Ivani Souza Mello,
  • Ivan Luiz Santos da Cruz,
  • Marcos Antônio Soares

摘要

The search for probiotic microorganisms that can be applied beyond gut health has advanced into areas that seek to promote longevity and to prevent neurodegenerative diseases. In this study, we have investigated non-Saccharomyces strains isolated from the Amazon, Cerrado, and Pantanal biomes and evaluated how they affect Caenorhabditis elegans. During our initial screening, based on increased body size and population, we selected eight yeast strains and characterized their cells. Then, we selected three of these strains for in vivo testing. Cryptococcus sp._T038 and Cryptococcus sp._T248 prolonged longevity and reduced the effects of thermal and oxidative stress in C. elegans. Hanseniaspora opuntiae_W164 and Saccharomyces boulardii_SB delayed beta-amyloid-induced paralysis in C. elegans CL4176. The antioxidant genes of the DAF-2/SKN-1 pathway were activated by Cryptococcus_T038 and _T248 and H. opuntiae_W164 in C. elegans strain LD1171 (GCS-1p::GFP) and by Cryptococcus_T038, H. opuntiae_W164, and S. boulardii_SB in C. elegans strain CF1553 (SOD-3p::GFP). These data reinforce that wild yeasts are potential functional probiotics.