Use of Nanovesicles from Orange Juice to Reverse Diet-Induced Gut Modifications in Diet-Induced Obese Mice

Emmanuelle Berger (1) , Pascal Colosetti (1) , Audrey Jalabert (1) , Emmanuelle Meugnier (1) , Oscar Wiklander (2) , Juliette Jouhet (3) , Elisabeth Errazuriz-Cerda (4) , Stéphanie Chanon (1) , Dhanu Gupta (2) , Gilles Rautureau (5) , Alain Geloen (1) , Samir El-Andaloussi (2) , Baptiste Panthu (1) , Jennifer Rieusset (1) , Sophie Rome (1)

1 CarMeN - Cardiovasculaire, métabolisme, diabétologie et nutrition
2 Department of Laboratory Medicine, Karolinska Institutet,
3 LIPID
4 UCBL - Université Claude Bernard Lyon 1
5 CRMN - Centre de RMN à très hauts champs de Lyon

We have determined whether orange juice-derived nanovesicles (ONVs) could be used for the treatment of obesity-associated intestinal complications. ONVs were characterized by lipidomic, metabolomic, electron microscopy. In vitro, intestinal barriers (IBs = Caco-2+HT-29-MTX) were treated with ONVs and co-cultured with adipocytes to monitor IB fat release. In vivo, obesity was induced with a high-fat, high-sucrose diet (HFHSD mice) for 12 weeks. Then, half of HFHSD mice were gavaged with ONVs. One-month ONV treatment did not modify HFHSD-induced insulin resistance but reversed diet-induced gut modifications. In the jejunum, ONVs increased villi size, reduced triglyceride content, and modulated mRNA levels of genes involved in immune response (tumor necrosis factor [TNF]-α and interleukin [IL]-1β), barrier permeability (CLDN1, OCLN, ZO1), fat absorption, and chylomicron release. ONVs targeted microsomal triglyceride transfer protein (MTP) and angiopoietin-like protein-4 (ANGPTL4), two therapeutic targets to reduce plasma lipids and inflammation in gastrointestinal diseases. Interestingly, ONV treatment did not aggravate liver steatosis, as MTP mRNA was increased in the liver. Therefore, ONVs protected both intestine and the liver from fat overload associated with the HFHSD. As ONVs concentrated amino acids and bioactive lipids versus orange juice, which are deficient in obese patients, the use of ONVs as a dietary supplement could bring physiological relevant compounds in the jejunum to accelerate the restoration of intestinal functions during weight loss in obese patients.

Mots clés: ANGPTL4; MTP; diet-induced gut modifications; dietary supplement; edible plant; extracellular vesicles; jejunum; lipid metabolism; obesity; triglycerides; villi size

Domaines: Alimentation et Nutrition; Biochimie, Biologie Moléculaire; Médecine humaine et pathologie

Emmanuelle Berger, Pascal Colosetti, Audrey Jalabert, Emmanuelle Meugnier, Oscar Wiklander, et al.. Use of Nanovesicles from Orange Juice to Reverse Diet-Induced Gut Modifications in Diet-Induced Obese Mice. Molecular Therapy - Methods and Clinical Development, 2020, 18, pp.880-892. ⟨10.1016/j.omtm.2020.08.009⟩. ⟨hal-02952992⟩