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Chao X, Guo L, Ye C, Liu A, Wang X, Ye M, Fan Z, Luan K, Chen J, Zhang C, Liu M, Zhou B, Zhang X, Li Z, Luo Q. ALKBH5 regulates chicken adipogenesis by mediating LCAT mRNA stability depending on m 6A modification. BMC Genomics 2024; 25:634. [PMID: 38918701 PMCID: PMC11197345 DOI: 10.1186/s12864-024-10537-2] [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: 01/16/2024] [Accepted: 06/17/2024] [Indexed: 06/27/2024] Open
Abstract
BACKGROUND Previous studies have demonstrated the role of N6-methyladenosine (m6A) RNA methylation in various biological processes, our research is the first to elucidate its specific impact on LCAT mRNA stability and adipogenesis in poultry. RESULTS The 6 100-day-old female chickens were categorized into high (n = 3) and low-fat chickens (n = 3) based on their abdominal fat ratios, and their abdominal fat tissues were processed for MeRIP-seq and RNA-seq. An integrated analysis of MeRIP-seq and RNA-seq omics data revealed 16 differentially expressed genes associated with to differential m6A modifications. Among them, ELOVL fatty acid elongase 2 (ELOVL2), pyruvate dehydrogenase kinase 4 (PDK4), fatty acid binding protein 9 (PMP2), fatty acid binding protein 1 (FABP1), lysosomal associated membrane protein 3 (LAMP3), lecithin-cholesterol acyltransferase (LCAT) and solute carrier family 2 member 1 (SLC2A1) have ever been reported to be associated with adipogenesis. Interestingly, LCAT was down-regulated and expressed along with decreased levels of mRNA methylation methylation in the low-fat group. Mechanistically, the highly expressed ALKBH5 gene regulates LCAT RNA demethylation and affects LCAT mRNA stability. In addition, LCAT inhibits preadipocyte proliferation and promotes preadipocyte differentiation, and plays a key role in adipogenesis. CONCLUSIONS In conclusion, ALKBH5 mediates RNA stability of LCAT through demethylation and affects chicken adipogenesis. This study provides a theoretical basis for further understanding of RNA methylation regulation in chicken adipogenesis.
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Affiliation(s)
- Xiaohuan Chao
- State Key Laboratory of Livestock and Poultry Breeding, South China Agricultural University, Guangzhou, China
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Lijin Guo
- State Key Laboratory of Livestock and Poultry Breeding, South China Agricultural University, Guangzhou, China
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Chutian Ye
- State Key Laboratory of Livestock and Poultry Breeding, South China Agricultural University, Guangzhou, China
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Aijun Liu
- State Key Laboratory of Livestock and Poultry Breeding, South China Agricultural University, Guangzhou, China
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Xiaomeng Wang
- State Key Laboratory of Livestock and Poultry Breeding, South China Agricultural University, Guangzhou, China
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Mao Ye
- State Key Laboratory of Livestock and Poultry Breeding, South China Agricultural University, Guangzhou, China
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Zhexia Fan
- State Key Laboratory of Livestock and Poultry Breeding, South China Agricultural University, Guangzhou, China
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Kang Luan
- State Key Laboratory of Livestock and Poultry Breeding, South China Agricultural University, Guangzhou, China
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Jiahao Chen
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Chunlei Zhang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Manqing Liu
- State Key Laboratory of Livestock and Poultry Breeding, South China Agricultural University, Guangzhou, China
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Bo Zhou
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Xiquan Zhang
- State Key Laboratory of Livestock and Poultry Breeding, South China Agricultural University, Guangzhou, China
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Zhenhui Li
- State Key Laboratory of Livestock and Poultry Breeding, South China Agricultural University, Guangzhou, China.
- College of Animal Science, South China Agricultural University, Guangzhou, China.
| | - Qingbin Luo
- State Key Laboratory of Livestock and Poultry Breeding, South China Agricultural University, Guangzhou, China.
- College of Animal Science, South China Agricultural University, Guangzhou, China.
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Lee M, Park J, Kim OK, Kim D, Han MJ, Kim SH, Kim TH, Lee J. Lactobacillus reuteri NCIMB 30242 (LRC) Inhibits Cholesterol Synthesis and Stimulates Cholesterol Excretion in Animal and Cell Models. J Med Food 2023; 26:529-539. [PMID: 37594559 DOI: 10.1089/jmf.2022.k.0137] [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] [Indexed: 08/19/2023] Open
Abstract
In this study, we evaluated the effects of Lactobacillus reuteri NCIMB (LRC™) supplementation on hypercholesterolemia by researching its effects on cellular cholesterol metabolism in hypercholesterolemic rats (KHGASP-22-170) and HepG2 cell line. Rats were separated into six groups after adaptation and were then fed a normal control (NC), a high-cholesterol diet (HC), or a HC supplemented with simvastatin 15 mg/kg body weight (positive control [PC]), LRC 1 × 109 colony-forming units (CFU)/rat/day, LRC 4 × 109 CFU/rat/day, or LRC 1 × 1010 CFU/rat/day (1 × 109, 4 × 109, or 1 × 1010). The rats were dissected to study the effects of LRC on cholesterol metabolism and intestinal excretion at the end of experimental period. We discovered that LRC mainly participated in the restraint of 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase, the uptake of low-density lipoprotein (LDL) cholesterol into tissues, partially in the transport of cholesteryl esters into high density lipoprotein for maturation, and intestinal excretion of cholesterol. These results are supported by the expression of transcription factors and enzymes such as HMG-CoA reductase, SREBP2, CYP7A1, CETP, and LCAT in both messenger RNA (mRNA) and protein levels in serum and hepatic tissue. Furthermore, the LRC treatment in HepG2 significantly reduced the mRNA expression of HMG-CoA reductase, SREBP2, and CEPT and significantly increased the mRNA expression of LDL-receptor, LCAT, and CYP7A1 at all doses. Hence, we suggest that LRC supplementation could alleviate the serum cholesterol level by inhibiting the intracellular cholesterol synthesis, and augmenting excretion of intestinal cholesterol.
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Affiliation(s)
- Minhee Lee
- Department of Medical Nutrition, Kyung Hee University, Yongin, Korea
| | - Jeongjin Park
- Division of Food and Nutrition and Human Ecology Research Institute, Chonnam National University, Gwangju, Korea
| | - Ok-Kyung Kim
- Division of Food and Nutrition and Human Ecology Research Institute, Chonnam National University, Gwangju, Korea
| | - Dakyung Kim
- Department of Medical Nutrition, Kyung Hee University, Yongin, Korea
| | | | | | | | - Jeongmin Lee
- Department of Medical Nutrition, Kyung Hee University, Yongin, Korea
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Wang L, Shan T. Factors inducing transdifferentiation of myoblasts into adipocytes. J Cell Physiol 2020; 236:2276-2289. [PMID: 32989814 DOI: 10.1002/jcp.30074] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 09/08/2020] [Accepted: 09/14/2020] [Indexed: 12/15/2022]
Abstract
Fat infiltration in skeletal muscle is observed in several myopathies, is associated with muscular dysfunction, and is strongly correlated with insulin resistance, diabetes, obesity, and aging. In animal production, skeletal muscle fat (also known as intermuscular and intramuscular fat) is positively related to meat quality including tenderness, flavor, and juiciness. Thus, understanding the cell origin and regulation mechanism of skeletal muscle fat infiltration is important for developing therapies against human myopathies as well as for improving meat quality. Notably, age, sarcopenia, oxidative stress, injury, and regeneration can activate adipogenic differentiation potential in myoblasts and affect fat accumulation in skeletal muscle. In addition, several transcriptional and nutritional factors can directly induce transdifferentiation of myoblasts into adipocytes. In this review, we focused on the recent progress in understanding the muscle-to-adipocyte differentiation and summarized and discussed the genetic, nutritional, and physiological factors that can induce transdifferentiation of myoblasts into adipocytes. Moreover, the regulatory roles and mechanisms of these factors during the transdifferentiation process were also discussed.
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Affiliation(s)
- Liyi Wang
- College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang, China
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Zhejiang University, Hangzhou, China
- Zhejiang Provincial Laboratory of Feed and Animal Nutrition, Hangzhou, China
| | - Tizhong Shan
- College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang, China
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Zhejiang University, Hangzhou, China
- Zhejiang Provincial Laboratory of Feed and Animal Nutrition, Hangzhou, China
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Norum KR, Remaley AT, Miettinen HE, Strøm EH, Balbo BEP, Sampaio CATL, Wiig I, Kuivenhoven JA, Calabresi L, Tesmer JJ, Zhou M, Ng DS, Skeie B, Karathanasis SK, Manthei KA, Retterstøl K. Lecithin:cholesterol acyltransferase: symposium on 50 years of biomedical research from its discovery to latest findings. J Lipid Res 2020; 61:1142-1149. [PMID: 32482717 PMCID: PMC7397740 DOI: 10.1194/jlr.s120000720] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 05/21/2020] [Indexed: 01/04/2023] Open
Abstract
LCAT converts free cholesterol to cholesteryl esters in the process of reverse cholesterol transport. Familial LCAT deficiency (FLD) is a genetic disease that was first described by Kaare R. Norum and Egil Gjone in 1967. This report is a summary from a 2017 symposium where Dr. Norum recounted the history of FLD and leading experts on LCAT shared their results. The Tesmer laboratory shared structural findings on LCAT and the close homolog, lysosomal phospholipase A2. Results from studies of FLD patients in Finland, Brazil, Norway, and Italy were presented, as well as the status of a patient registry. Drs. Kuivenhoven and Calabresi presented data from carriers of genetic mutations suggesting that FLD does not necessarily accelerate atherosclerosis. Dr. Ng shared that LCAT-null mice were protected from diet-induced obesity, insulin resistance, and nonalcoholic fatty liver disease. Dr. Zhou presented multiple innovations for increasing LCAT activity for therapeutic purposes, whereas Dr. Remaley showed results from treatment of an FLD patient with recombinant human LCAT (rhLCAT). Dr. Karathanasis showed that rhLCAT infusion in mice stimulates cholesterol efflux and suggested that it could also enhance cholesterol efflux from macrophages. While the role of LCAT in atherosclerosis remains elusive, the consensus is that a continued study of both the enzyme and disease will lead toward better treatments for patients with heart disease and FLD.
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Affiliation(s)
- Kaare R Norum
- Department of Nutrition, University of Oslo, Oslo, Norway
| | | | - Helena E Miettinen
- Department of Medicine, University of Helsinki and University Central Hospital, Helsinki, Finland
| | - Erik H Strøm
- Departments of Pathology Oslo University Hospital, Oslo, Norway
| | - Bruno E P Balbo
- Division of Nephrology and Molecular Medicine Department of Medicine, University of São Paulo School of Medicine, São Paulo, Brazil
| | - Carlos A T L Sampaio
- Division of Nephrology and Molecular Medicine Department of Medicine, University of São Paulo School of Medicine, São Paulo, Brazil
| | - Ingrid Wiig
- Centre for Rare Disorders, Oslo University Hospital, Oslo, Norway
| | - Jan Albert Kuivenhoven
- Department of Pediatrics, Section Molecular Genetics, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Laura Calabresi
- Center E. Grossi Paoletti, Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy
| | - John J Tesmer
- Department of Biological Sciences, Purdue University, West Lafayette, IN
| | - Mingyue Zhou
- Cardiometabolic Disorder Research, AMGEN, San Francisco, CA
| | - Dominic S Ng
- Department of Medicine, University of Toronto and Keenan Research Center, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Canada
| | - Bjørn Skeie
- Anesthesiology, Oslo University Hospital, Oslo, Norway
| | | | - Kelly A Manthei
- Life Sciences Institute, University of Michigan, Ann Arbor, MI
| | - Kjetil Retterstøl
- Department of Nutrition, University of Oslo, Oslo, Norway .,Department of Endocrinology, Morbid Obesity, and Preventive Medicine, Lipid Clinic, Oslo University Hospital, Oslo, Norway
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Jiang J, Li P, Ling H, Xu Z, Yi B, Zhu S. MiR-499/PRDM16 axis modulates the adipogenic differentiation of mouse skeletal muscle satellite cells. Hum Cell 2018; 31:282-291. [PMID: 30097922 DOI: 10.1007/s13577-018-0210-5] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 05/03/2018] [Indexed: 01/08/2023]
Abstract
Obesity is associated with increased risks of diverse diseases; brown adipose tissue (BAT) can increase energy expenditure and protect against obesity by increasing the decomposition of white adipose tissue (WAT) to enhance the non-coupled oxidative phosphorylation of fatty acid in adipocytes and contributes to weight loss. However, BAT is abundant in only small rodents and newborn humans, but not in adults. PRDM16 is a key factor that induces the differentiation of skeletal muscle precursors to brown adipocytes and simultaneously inhibits myogenic differentiation. In the present study, we set insulin-induced skeletal muscle satellite cells (SMSCs) adipogenic differentiation model, as confirmed by the contents of adipogenic markers PRDM16, UCP1 and PGC1α and myogenic markers MyoD1 and MyoG. We selected miR-499 as candidate miRNA, which might regulate PRDM16 to affect SMSCs adipogenic differentiation. Possibly through directly binding to PRDM16 3'-UTR, miR-499 negatively regulated PRDM16 expression and hindered SMSCs adipogenic differentiation by reducing adipogenic markers PRDM16, UCP1 and PGC1α and increasing myogenic markers MyoD1 and MyoG. PRDM16 overexpression could partially reverse the effect of miR-499 on the above markers and SMSCs adipogenic differentiation. Taken together, miR-499/PRDM16 axis can affect the balance between SMSC myogenic and adipogenic differentiation, targeting miR-499 to rescue PRDM16 expression, thus promoting SMSCs adipogenic differentiation may be a promising strategy for obesity treatment.
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Affiliation(s)
- Juan Jiang
- Department of General Surgery, Third Xiangya Hospital, Central South University, 138 Tongzipo Street, Changsha, 410013, Hunan, People's Republic of China
| | - PengZhou Li
- Department of General Surgery, Third Xiangya Hospital, Central South University, 138 Tongzipo Street, Changsha, 410013, Hunan, People's Republic of China
| | - Hao Ling
- Department of General Surgery, Third Xiangya Hospital, Central South University, 138 Tongzipo Street, Changsha, 410013, Hunan, People's Republic of China
| | - ZhouZhou Xu
- Department of General Surgery, Third Xiangya Hospital, Central South University, 138 Tongzipo Street, Changsha, 410013, Hunan, People's Republic of China
| | - Bo Yi
- Department of General Surgery, Third Xiangya Hospital, Central South University, 138 Tongzipo Street, Changsha, 410013, Hunan, People's Republic of China.
| | - Shaihong Zhu
- Department of General Surgery, Third Xiangya Hospital, Central South University, 138 Tongzipo Street, Changsha, 410013, Hunan, People's Republic of China.
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Abstract
PURPOSE OF REVIEW Lecithin cholesterol acyltyransferase (LCAT) deficiency is a rare monogenic disorder causing lipoprotein dysregulation and multiple organ dysfunctions, including renal impairment. LCAT knockout mice have been shown informative in elucidating mechanisms of many major clinical morbid phenotypes. Extended characterization of the LDL receptor/LCAT double knockout (Ldlr/Lcat-DKO or DKO) mice had led to the discovery of a number of novel protective metabolic phenotypes, including resistance to obesity, nonalcoholic steatohepatitis (NASH) and insulin resistance. We seek to integrate the findings to explore novel pathogenic pathways. RECENT FINDINGS The chow fed DKO mice were found more insulin sensitive than their Ldlr-KO controls. Joint analyses of the three strains (DKO, Ldlr-KO and wild-type) revealed differential metabolic responses to a high cholesterol diet (HCD) vs. high-fat diet (HFD). DKO mice are protected from HFD-induced obesity, hepatic endoplasmic reticulum (ER) stress, insulin resistance, ER cholesterol and NASH markers (steatosis and inflammasomes). Joint analysis revealed the HFD-induced NASH is dependent on de-novo hepatic cholesterol biosynthesis. DKO mice are protected from HCD-induced hepatic ER stress, ER cholesterol, but not NASH, the latter likely due to cholesterol crystal accumulation. DKO mice were found to develop ectopic brown adipose tissue (BAT) in skeletal muscle. Ectopic BAT derived in part from myoblast in utero and from adult satellite cells. Primed expression of PRDM16 and UCP in quiescent satellite cell caused by LCAT deficiency synergizes with cell cholesterol depletion to induce satellite cell-to-BAT transdifferentiation. SUMMARY Metabolic phenotyping of selective LCAT null mice led to the discovery of novel metabolically protective pathways.
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Ng DS. Emerging role of notch 1 signaling in brown adipogenesis. Curr Opin Lipidol 2017; 28:218-219. [PMID: 28272156 DOI: 10.1097/mol.0000000000000403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Dominic S Ng
- aDepartment of Medicine, Keenan Research Centre, Li Ka Shing Knowledge Institute, St Michael's Hospital bDepartment of Physiology, Faculty of Medicine cDepartment of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
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