Maternal Leucine-Rich Diet Minimises Muscle Mass Loss in Tumour-bearing Adult Rat Offspring by Improving the Balance of Muscle Protein Synthesis and Degradation

Author(s)

da Silva Miyaguti, Natalia Angelo ^[1] ; Pereira de Oliveira, Sarah Christine ^[1] ; Cintra Gomes-Marcondes, Maria Cristina ^[1]

Affiliation

^[1] Univ Estadual Campinas, UNICAMP, Dept Struct & Funct Biol, Lab Nutr & Canc, Biol Inst, Rua Monteiro Lobato 255, BR-13083862 Campinas, SP - Brazil

• Document type: Journal article
• Source: BIOMOLECULES; v. 9, n. 6 JUN 2019.
• Web of Science Citations: 0

Abstract

Cachexia syndrome can affect cancer patients and new prevention strategies are required. Maternal nutritional supplementation can modify metabolic programming in the offspring, which lasts until adulthood. This could be a good approach against diseases such as cancer. A 3% leucine-rich diet treatment improved muscle protein turnover by modifying the mTOR and proteolytic pathways, thus we analysed whether maternal supplementation could ameliorate muscle protein turnover in adult offspring tumour-bearing rats. Pregnant Wistar rats received a control diet or 3% leucine-rich diet during pregnancy/lactation, and their weaned male offspring received a control diet until adulthood when they were distributed into following groups (n = 7-8 per group): C, Control; W, tumour-bearing; L, without tumour with a maternal leucine-rich diet; and WL, tumour-bearing with a maternal leucine-rich diet. Protein synthesis and degradation were assessed in the gastrocnemius muscle, focusing on the mTOR pathway, which was extensively altered in W group. However, the WL adult offspring showed no decrease in muscle weight, higher food intake, ameliorated muscle turnover, activated mTOR and p70S6K, and maintained muscle cathepsin H and calpain activities. Maternal leucine nutritional supplementation could be a positive strategy to improve muscle protein balance in cancer cachexia-induced muscle damage in adult offspring rats. (AU)

• FAPESP's process: 17/10809-2 - Evaluation of DNA methylation profile in muscle and tumour tissue in adult rats, walker 256 tumour bearing, from offspring of rats submitted to COD liver oil diet
• Grantee: Sarah Christine Pereira de Oliveira
• Support Opportunities: Scholarships in Brazil - Master
• FAPESP's process: 17/02739-4 - Nutrition and cancer: study of molecular, proteomic and metabolomic aspects of experimental model of cachexia
• Grantee: Maria Cristina Cintra Gomes Marcondes
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 14/13334-7 - Nutrition and cancer: metabolomic, and proteomic profile of muscle, placental, fetal, and tumor cell signaling pathways in Walker-256 tumour-bearing pregnant rats submitted to leucine nutritional supplementation
• Grantee: Maria Cristina Cintra Gomes Marcondes
• Support Opportunities: Regular Research Grants