Gut Microbiome and Plasma Metabolomic Analysis in Patients with Myelodysplastic Syndrome

Abstract

Myelodysplastic syndrome (MDS) is a heterogeneous group of clonal hematopoietic stem cell disorders. Studies have shown the involvement of an abnormal immune system in MDS pathogenesis. The gut microbiota are known to influence host immunity and metabolism, thereby contributing to the development of hematopoietic diseases. In this study, we performed gut microbiome and plasma metabolomic analyses in patients with MDS and healthy controls. We found that patients with MDS had a different gut microbial composition compared to controls. The gut microbiota in MDS patients showed a continuous evolutionary relationship from the phylum to the species level. At the species level, the abundance of Haemophilus parainfluenzae, Streptococcus luteciae, Clostridium citroniae, and Gemmiger formicilis increased, while that of Prevotella copri decreased in MDS patients compared to controls. Moreover, abundance of bacterial genera correlated with the percentage of lymphocyte subsets in patients with MDS. Metabolomic analysis showed that the concentrations of hypoxanthine and pyroglutamic acid were increased, while that of 3a,7a-dihydroxy-5b-cholestan was decreased in MDS patients compared to controls. In conclusion, gut microbiome and plasma metabolomics are altered in patients with MDS, which may be involved in the immunopathogenesis of the disease.

Semi‐captive Przewalski's gazelles cope with winter adversity by adjusting their gut bacterial communities

“…The relative abundance of these 2 potential pathogens was higher in summer (Table 1). Streptococcus luteciae can cause infectious diseases and colitis‐associated colorectal cancer in animals or humans (Liang et al 2014, Jiang et al 2022; Table ). Clostridium perfringens can lead to neurological lesions and enteritis in animals or humans (Uzal and Kelly 1998, Uzal et al 2002, Kiu and Hall 2018; Table ).…”

The causal relationship of gut microbiota in progression of seven common hematological malignancie

“…Their ndings revealed that Prevotella heparinolytica stimulated the differentiation of Th17 cells that colonize the intestinal tract of VK*MYC mice and subsequently enter the BM of transgenic mice, thereby expediting the progression of MM. At the same time, several clinical studies found the GM of patients with hematologic malignancies exhibit dysbiosis compared with healthy individuals (Jiang et al, 2022;Zhang et al, 2019). The dysbiosis of GM has the potential to induce alterations in GM-derived metabolites, which act as signaling molecules and substrates for immune and metabolic responses.…”

The causal relationship of gut microbiota in progression of seven common hematological malignancies

“…Their ndings revealed that Prevotella heparinolytica stimulated the differentiation of Th17 cells that colonize the intestinal tract of VK*MYC mice and subsequently enter the BM of transgenic mice, thereby expediting the progression of MM. At the same time, several clinical studies found the GM of patients with hematologic malignancies exhibit dysbiosis compared with healthy individuals [10,11]. The dysbiosis of GM has the potential to induce alterations in GM-derived metabolites, which act as signaling molecules and substrates for immune and metabolic responses.…”