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Matsui K, Tani R, Yamasaki S, Ito N, Hamada A, Shintani T, Otomo T, Tokumaru K, Yanamoto S, Okamoto T. Analysis of Oral and Gut Microbiome Composition and Its Impact in Patients with Oral Squamous Cell Carcinoma. Int J Mol Sci 2024; 25:6077. [PMID: 38892262 PMCID: PMC11172797 DOI: 10.3390/ijms25116077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Revised: 05/22/2024] [Accepted: 05/30/2024] [Indexed: 06/21/2024] Open
Abstract
The impact of gut and oral microbiota on the clinical outcomes of patients with oral squamous cell carcinoma (OSCC) is unknown. We compared the bacterial composition of dental plaque and feces between patients with OSCC and healthy controls (HCs). Fecal and dental plaque samples were collected from 7 HCs and 18 patients with OSCC before treatment initiation. Terminal restriction fragment-length polymorphism analysis of 16S rRNA genes was performed. Differences in bacterial diversity between the HC and OSCC groups were examined. We compared the occupancy of each bacterial species in samples taken from patients with OSCC and HCs and analyzed the correlation between PD-L1 expression in the tumor specimens and the occupancy of each bacterial species. The gut and oral microbiota of patients with OSCC were more varied than those of HCs. Porphyromonas and Prevotella were significantly more abundant in patients with OSCC than in HCs. The abundance of Clostridium subcluster XIVa in the gut microbiota of the PD-L1-positive group was significantly greater than that in the PD-L1-negative group. The oral and gut microbiomes of patients with OSCC were in a state of dysbiosis. Our results suggest the possibility of new cancer therapies targeting these disease-specific microbiomes using probiotics and synbiotics.
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Affiliation(s)
- Kensaku Matsui
- Department of Molecular Oral Medicine and Maxillofacial Surgery, Graduate School of Biomedical and Health Science, Hiroshima University, Hiroshima 734-8553, Japan; (K.M.); (T.O.)
| | - Ryouji Tani
- Department of Oral and Maxillofacial Surgery, Hiroshima University Hospital, Hiroshima 734-8553, Japan;
| | - Sachiko Yamasaki
- Department of Oral Oncology, Graduate School of Biomedical and Health Science, Hiroshima University, Hiroshima 734-8553, Japan; (S.Y.); (A.H.); (S.Y.)
| | - Nanako Ito
- Department of Oral and Maxillofacial Surgery, Hiroshima University Hospital, Hiroshima 734-8553, Japan;
| | - Atsuko Hamada
- Department of Oral Oncology, Graduate School of Biomedical and Health Science, Hiroshima University, Hiroshima 734-8553, Japan; (S.Y.); (A.H.); (S.Y.)
| | - Tomoaki Shintani
- Center of Oral Clinical Examination, Hiroshima University Hospital, Hiroshima 734-8553, Japan;
| | - Takeshi Otomo
- NIHON KEFIA Co., Ltd., 13-16, Asahicho, Fujisawa-shi 251-0054, Japan; (T.O.); (K.T.)
| | - Koichiro Tokumaru
- NIHON KEFIA Co., Ltd., 13-16, Asahicho, Fujisawa-shi 251-0054, Japan; (T.O.); (K.T.)
| | - Souichi Yanamoto
- Department of Oral Oncology, Graduate School of Biomedical and Health Science, Hiroshima University, Hiroshima 734-8553, Japan; (S.Y.); (A.H.); (S.Y.)
| | - Tetsuji Okamoto
- Department of Molecular Oral Medicine and Maxillofacial Surgery, Graduate School of Biomedical and Health Science, Hiroshima University, Hiroshima 734-8553, Japan; (K.M.); (T.O.)
- School of Medical Sciences, University of East Asia, Shimonoseki 751-8503, Japan
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Sodum N, Mattila O, Sharma R, Kamakura R, Lehto VP, Walkowiak J, Herzig KH, Raza GS. Nutrient Combinations Sensed by L-Cell Receptors Potentiate GLP-1 Secretion. Int J Mol Sci 2024; 25:1087. [PMID: 38256160 PMCID: PMC10816371 DOI: 10.3390/ijms25021087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 01/11/2024] [Accepted: 01/14/2024] [Indexed: 01/24/2024] Open
Abstract
Obesity is a risk factor for cardiometabolic diseases. Nutrients stimulate GLP-1 release; however, GLP-1 has a short half-life (<2 min), and only <10-15% reaches the systemic circulation. Human L-cells are localized in the distal ileum and colon, while most nutrients are absorbed in the proximal intestine. We hypothesized that combinations of amino acids and fatty acids potentiate GLP-1 release via different L-cell receptors. GLP-1 secretion was studied in the mouse enteroendocrine STC-1 cells. Cells were pre-incubated with buffer for 1 h and treated with nutrients: alpha-linolenic acid (αLA), phenylalanine (Phe), tryptophan (Trp), and their combinations αLA+Phe and αLA+Trp with dipeptidyl peptidase-4 (DPP4) inhibitor. After 1 h GLP-1 in supernatants was measured and cell lysates taken for qPCR. αLA (12.5 µM) significantly stimulated GLP-1 secretion compared with the control. Phe (6.25-25 mM) and Trp (2.5-10 mM) showed a clear dose response for GLP-1 secretion. The combination of αLA (6.25 µM) and either Phe (12.5 mM) or Trp (5 mM) significantly increased GLP-1 secretion compared with αLA, Phe, or Trp individually. The combination of αLA and Trp upregulated GPR120 expression and potentiated GLP-1 secretion. These nutrient combinations could be used in sustained-delivery formulations to the colon to prolong GLP-1 release for diminishing appetite and preventing obesity.
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Affiliation(s)
- Nalini Sodum
- Research Unit of Biomedicine and Internal Medicine, Biocentre of Oulu, Medical Research Center, University of Oulu, Oulu University Hospital, Aapistie 5, 90220 Oulu, Finland; (N.S.); (O.M.); (R.S.); (K.-H.H.)
| | - Orvokki Mattila
- Research Unit of Biomedicine and Internal Medicine, Biocentre of Oulu, Medical Research Center, University of Oulu, Oulu University Hospital, Aapistie 5, 90220 Oulu, Finland; (N.S.); (O.M.); (R.S.); (K.-H.H.)
| | - Ravikant Sharma
- Research Unit of Biomedicine and Internal Medicine, Biocentre of Oulu, Medical Research Center, University of Oulu, Oulu University Hospital, Aapistie 5, 90220 Oulu, Finland; (N.S.); (O.M.); (R.S.); (K.-H.H.)
| | - Remi Kamakura
- Research Unit of Biomedicine and Internal Medicine, Biocentre of Oulu, Medical Research Center, University of Oulu, Oulu University Hospital, Aapistie 5, 90220 Oulu, Finland; (N.S.); (O.M.); (R.S.); (K.-H.H.)
| | - Vesa-Pekka Lehto
- Department of Technical Physics, Faculty of Science, Forestry and Technology, University of Eastern Finland, 70210 Kuopio, Finland;
| | - Jaroslaw Walkowiak
- Department of Gastroenterology and Metabolism, Poznan University of Medical Sciences, 60572 Poznań, Poland;
| | - Karl-Heinz Herzig
- Research Unit of Biomedicine and Internal Medicine, Biocentre of Oulu, Medical Research Center, University of Oulu, Oulu University Hospital, Aapistie 5, 90220 Oulu, Finland; (N.S.); (O.M.); (R.S.); (K.-H.H.)
- Department of Gastroenterology and Metabolism, Poznan University of Medical Sciences, 60572 Poznań, Poland;
| | - Ghulam Shere Raza
- Research Unit of Biomedicine and Internal Medicine, Biocentre of Oulu, Medical Research Center, University of Oulu, Oulu University Hospital, Aapistie 5, 90220 Oulu, Finland; (N.S.); (O.M.); (R.S.); (K.-H.H.)
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