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An elemental diet protects mouse salivary glands from 5-fluorouracil-induced atrophy.

ABSTRACT: In cancer patients, an elemental diet (ED) reduces adverse effects of chemotherapy, including oral mucositis. However, the detailed mechanism(s) of the healing effects of an ED remains unclear. In this study, the protective effects of the ED, Elental®, were examined against 5-fluorouracil (5-FU)-induced oral mucositis and salivary gland atrophy in mice. Mucositis was induced in female ICR mice by injection of 5-FU. The mice were orally administered Elental® (ED group) or saline (control group). After treatment, whole transcriptome analysis and network analysis were conducted to understand the mechanism(s) of action of Elental® against oral mucositis. Whole transcriptome analysis and Ingenuity Pathways Analysis (IPA) data suggested that Elental® contributed to the recovery of mitochondrial function in 5-FU-damaged salivary glands.

ORGANISM(S): Mus musculus

PROVIDER: GSE196407 | GEO | 2022/05/05

REPOSITORIES: GEO

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Transcriptome analysis of normal oral cells and oral cancer cells treated with elemental diet (ED) Elental®

Project description:Purpose: Previously, we have reported the effectiveness of elemental diet (ED) Elental® against radiotherapy- or chemoradiotherapy- induced oral mucositis (Support Care Cancer 2016, Mol Clin Oncol 2019). However, administration of additional nutrition or ED in oral cancer patients might also provide extra nutrition for cancer cells, which could result in cancer development. At present, it is still unclear whether the beneficial effect of ED can be expected to surpass its possible harmful effect on oral cancer treatment. In the present study, we tried to clarify whether Elental® has different effects on human oral keratinocyte (HOK) cells compared to oral squamous cell carcinoma (OSCC) cells (HSC2). Method: Gene expression profiles of HOK cells and HSC2 cells treated with Elental® were generated by deep sequencing. Results: Whole transcriptome analysis data suggested that Elental® helped in the proliferation and survival of HOK through the induction of ERK. Moreover, Elental® added stress to HSC2 through the induction of endoplasmic reticulum stress response marker, BiP. Our results showed that Elental® might add stress to HSC2, and provide growth stimulation to HOK. Conclusion: Whole transcriptome analysis showed different gene expression profile between HOK cells and HSC2 cells treated with Elental®, suggesting that effects of Elental® might differ between normal oral cells and oral cancer cells.

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Transcriptome analysis of normal oral cells and oral cancer cells treated with elemental diet (ED) Elental®

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The salivary proteome in relation to oral mucositis in autologous hematopoietic stem cell transplantation recipients: a labelled and label-free proteomics approach -DIAdata

Project description:Decreased salivary flow rates and/or changes in protein composition reported after autologous hematopoietic stem cell transplantation (ASCT) reduces the protective function of saliva. This might be associated with the development of oral mucositis (OM), an inflammation of the oral mucosa as a result of chemotherapy before ASCT which affects patients, quality of life and risk factor for systemic infections. In this study, a TMT-labelled proteomics experiment, a label-free quantification (LFQ) proteomics experiment and a DIA-MS proteomics experiment were used to identify differences in the salivary proteome between patients with ulcerative OM (uOM; WHO score 2) and those without (nOM).

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An elemental diet protects mouse salivary glands from 5-fluorouracil-induced atrophy.

Project description:An elemental diet protects mouse salivary glands from 5-fluorouracil-induced atrophy.

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The salivary proteome in relation to oral mucositis in autologous hematopoietic stem cell transplantation recipients: a labelled and label-free proteomics approach-DDALFQ

Project description:Decreased salivary flow rates and/or changes in protein composition reported after autologous hematopoietic stem cell transplantation (ASCT) reduces the protective function of saliva. This might be associated with the development of oral mucositis (OM), an inflammation of the oral mucosa as a result of chemotherapy before ASCT which affects patients? quality of life and risk factor for systemic infections. In this study, a TMT-labelled proteomics experiment, a label-free quantification (LFQ) proteomics experiment and a DIA-MS proteomics experiment were used to identify differences in the salivary proteome between patients with ulcerative OM (uOM; WHO score ? 2) and those without (nOM). For the TMT-labelled experiment, saliva samples of 5 uOM and 5 nOM were pooled at different time points: baseline, 1, 2, and 3 weeks after ASCT and 3 months after ASCT. A different salivary proteome was suggested by a distinct clustering of the OM pools at baseline, week 2 and week 3 after ASCT.

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