Excessive fatty acid oxidation induces muscle atrophy in cancer cachexia

Fukawa, Tomoya; Yan-Jiang, Benjamin Chua; Min-Wen, Jason Chua; Jun-Hao, Elwin Tan; Huang, Dan; Qian, Chao Nan; Ong, Pauline; Li, Zhimei; Chen, Shuwen; Mak, Shi Ya; Lim, Wan Jun; Kanayama, Hiro Omi; Mohan, Rosmin Elsa; Wang, Ruiqi Rachel; Lai, Jiunn Herng; Chua, Clarinda; Ong, Hock Soo; Tan, Ker Kan; Ho, Ying Swan; Tan, Iain Beehuat; Teh, Bin Tean; Shyh‐Chang, Ng

doi:10.1038/nm.4093

Cited by 183 publications

(195 citation statements)

References 32 publications

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“…PAF-R are mainly expressed by mesenchymal cells, which may explain the implication of adipose, muscle, liver, and heart tissue, as well as gut barrier and brain dysfunctions in cachexia, supporting our proposed model (31,32,(62)(63)(64). Also, the described crosstalk between wasting of fat tissue and skeletal muscle is compatible with the proposed mechanism (65)(66)(67).…”

Section: Discussionsupporting

confidence: 85%

Multi-omics Analysis of Serum Samples Demonstrates Reprogramming of Organ Functions Via Systemic Calcium Mobilization and Platelet Activation in Metastatic Melanoma

Muqaku

Eisinger

Meier

et al. 2017

Molecular & Cellular Proteomics

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Pathophysiologies of cancer-associated syndromes such as cachexia are poorly understood and no routine biomarkers have been established, yet. Using shotgun proteomics, known marker molecules including PMEL, CRP, SAA, and CSPG4 were found deregulated in patients with metastatic melanoma. Targeted analysis of 58 selected proteins with multiple reaction monitoring was applied for independent data verification. In three patients, two of which suffered from cachexia, a tissue damage signature was determined, consisting of nine proteins, PLTP, CD14, TIMP1, S10A8, S10A9, GP1BA, PTPRJ, CD44, and C4A, as well as increased levels of glycine and asparagine, and decreased levels of polyunsaturated phosphatidylcholine concentrations, as determined by targeted metabolomics. Remarkably, these molecules are known to be involved in key processes of cancer cachexia. Based on these results, we propose a model how metastatic melanoma may lead to reprogramming of organ functions via formation of platelet activating factors from long-chain polyunsaturated phosphatidylcholines under oxidative conditions and via systemic induction of intracellular calcium mobilization. Calcium mobilization in platelets was demonstrated to alter levels of several of these marker molecules. Additionally, platelets from melanoma patients proved to be in a rather exhausted state, and platelet-derived eicosanoids implicated in tumor growth were found massively increased in blood from three melanoma patients. Platelets were thus identified Serum is the most important diagnostic sample type because of its minimal invasive access, a relatively high stability and its comprehensive representation of the physiological state of an individual. The latest technological development of mass spectrometric instruments, such as high resolution orbitrap instruments, improved substantially the quality and reliability of serum proteomics data (1). Shotgun proteomics analysis using the orbitrap technology is mainly applied for protein screening purposes (2). This method allows performing untargeted analyses, applicable for hypothesis-generating clinical applications. Targeted proteomics using triple-quadrupole mass spectrometric instruments, represents a complementary approach which is applied for protein quantification, hypotheses verification and validation (3). Enormous efforts have been invested in the last decades focusing on serum biomarker discovery (4). However, mass spectrometrybased proteomics analyses hardly managed to cope with biological variation. As a consequence, almost no clinically validated biomarker has emerged from these investigations yet, and a lot of questions about pathophysiological mechanisms remain unanswered.Using mass spectrometry-based proteomics, we have previously investigated melanoma and neighboring stroma cells, focusing on the identification of biomarkers associated with intrinsic and extrinsic drug resistance (5). In the present article, we followed the question how metastatic melanoma may reprogram distant organ functions, and how these...

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Section: Discussionsupporting

confidence: 85%

Multi-omics Analysis of Serum Samples Demonstrates Reprogramming of Organ Functions Via Systemic Calcium Mobilization and Platelet Activation in Metastatic Melanoma

Muqaku

Eisinger

Meier

et al. 2017

Molecular & Cellular Proteomics

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“…It should be noted that not all cancers necessarily cause cachexia 38. Similarly, skeletal muscle regeneration can be affected by more than just cancer.…”

Section: Discussionmentioning

confidence: 99%

Comprehensive proteome analysis of human skeletal muscle in cachexia and sarcopenia: a pilot study

Ebhardt

Degen

Tadini

et al. 2017

J cachexia sarcopenia muscle

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BackgroundCancer cachexia (cancer‐induced muscle wasting) is found in a subgroup of cancer patients leaving the patients with a poor prognosis for survival due to a lower tolerance of the chemotherapeutic drug. The cause of the muscle wasting in these patients is not fully understood, and no predictive biomarker exists to identify these patients early on. Skeletal muscle loss is an inevitable consequence of advancing age. As cancer frequently occurs in old age, identifying and differentiating the molecular mechanisms mediating muscle wasting in cancer cachexia vs. age‐related sarcopenia are a challenge. However, the ability to distinguish between them is critical for early intervention, and simple measures of body weight may not be sufficiently sensitive to detect cachexia early.MethodsWe used a range of omics approaches: (i) undepleted proteome was quantified using advanced high mass accuracy mass spectrometers in SWATH‐MS acquisition mode; (ii) phospho epitopes were quantified using protein arrays; and (iii) morphology was assessed using fluorescent microscopy.ResultsWe quantified the soluble proteome of muscle biopsies from cancer cachexia patients and compared them with cohorts of cancer patients and healthy individuals with and without age‐related muscle loss (aka age‐related sarcopenia). Comparing the proteomes of these cohorts, we quantified changes in muscle contractile myosins and energy metabolism allowing for a clear identification of cachexia patients. In an in vitro time lapse experiment, we mimicked cancer cachexia and identified signal transduction pathways governing cell fusion to play a pivotal role in preventing muscle regeneration.ConclusionsThe work presented here lays the foundation for further understanding of muscle wasting diseases and holds the promise of overcoming ambiguous weight loss as a measure for defining cachexia to be replaced by a precise protein signature.

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“…In another model of cancer cachexia, incubation of human muscle cells with cachectic conditioned media led to upregulation of fatty acid metabolism pathways and in increase in acyl-carnitines. This process was associated with muscle atrophy, and inhibition of FA metabolism attenuated atrophy (Fukawa et al 2016). These studies demonstrate similarities to our present work, but differences may be due to the methodologies employed (NMR), the differences in the metabolite kinetics between disease processes, age differences, and the lack of ongoing atrophy in the clinically relevant present model.…”

Section: Discussionmentioning

confidence: 99%

Lung injury-induced skeletal muscle wasting in aged mice is linked to alterations in long chain fatty acid metabolism

et al. 2016

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Introduction Older patients are more likely to acquire and die from acute respiratory distress syndrome (ARDS) and muscle weakness may be more clinically significant in older persons. Recent data implicate muscle ring finger protein 1 (MuRF1) in lung injury-induced skeletal muscle atrophy in young mice and identify an alternative role for MuRF1 in cardiac metabolism regulation through inhibition of fatty acid oxidation. Objectives To develop a model of lung injury-induced muscle wasting in old mice and to evaluate the skeletal muscle metabolomic profile of adult and old acute lung injury (ALI) mice. Methods Young (2 month), adult (6 month) and old (20 month) male C57Bl6J mice underwent Sham (intratracheal H2O) or ALI [intratracheal E. coli lipopolysaccharide (i.t. LPS)] conditions and muscle functional testing. Metabolomic analysis on gastrocnemius muscle was performed using gas chromatography-mass spectrometry (GC-MS). Results Old ALI mice had increased mortality and failed to recover skeletal muscle function compared to adult ALI mice. Muscle MuRF1 expression was increased in old ALI mice at day 3. Non-targeted muscle metabolomics revealed alterations in amino acid biosynthesis and fatty acid metabolism in old ALI mice. Targeted metabolomics of fatty acid intermediates (acyl-carnitines) and amino acids revealed a reduction in long chain acyl-carnitines in old ALI mice. Conclusion This study demonstrates age-associated susceptibility to ALI-induced muscle wasting which parallels a metabolomic profile suggestive of altered muscle fatty acid metabolism. MuRF1 activation may contribute to both atrophy and impaired fatty acid oxidation, which may synergistically impair muscle function in old ALI mice.

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Excessive fatty acid oxidation induces muscle atrophy in cancer cachexia

Cited by 183 publications

References 32 publications

Multi-omics Analysis of Serum Samples Demonstrates Reprogramming of Organ Functions Via Systemic Calcium Mobilization and Platelet Activation in Metastatic Melanoma

Multi-omics Analysis of Serum Samples Demonstrates Reprogramming of Organ Functions Via Systemic Calcium Mobilization and Platelet Activation in Metastatic Melanoma

Comprehensive proteome analysis of human skeletal muscle in cachexia and sarcopenia: a pilot study

Lung injury-induced skeletal muscle wasting in aged mice is linked to alterations in long chain fatty acid metabolism

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