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Dhanasiri AK, Siciliani D, Kortner TM, Krogdahl Å. Epigenetic changes in pyloric caeca of Atlantic salmon fed diets containing increasing levels of lipids and choline. Epigenetics 2024; 19:2305079. [PMID: 38281164 PMCID: PMC10824149 DOI: 10.1080/15592294.2024.2305079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 01/09/2024] [Indexed: 01/30/2024] Open
Abstract
An earlier study of ours investigating the effect of dietary lipid levels on the choline requirement of Atlantic salmon showed increasing severity of intestinal steatosis with increasing lipid levels. As choline is involved in epigenetic regulation by being the key methyl donor, pyloric caeca samples from the study were analysed for epigenetic effects of dietary lipid and choline levels. The diets varied in lipid levels between 16% and 28%, and choline levels between 1.9 and 2.3 g/kg. The diets were fed for 8 weeks to Atlantic salmon of 25 g of initial weight. Using reduced representation bisulfite sequencing (RRBS), this study revealed that increasing dietary lipid levels induced methylation differences in genes involved in membrane transport and signalling pathways, and in microRNAs important for the regulation of lipid homoeostasis. Increasing choline levels also affected genes involved in fatty acid biosynthesis and transport, lipolysis, and lipogenesis, as well as important immune genes. Our observations confirmed that choline is involved in epigenetic regulation in Atlantic salmon, as has been reported for higher vertebrates. This study showed the need for the inclusion of biomarkers of epigenetic processes in studies that must be conducted to define optimal choline levels in diets for Atlantic salmon.
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Affiliation(s)
- Anusha K.S. Dhanasiri
- Department of Paraclinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Sciences (NMBU), Ås, Norway
| | - Daphne Siciliani
- Department of Paraclinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Sciences (NMBU), Ås, Norway
| | - Trond M. Kortner
- Department of Paraclinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Sciences (NMBU), Ås, Norway
| | - Åshild Krogdahl
- Department of Paraclinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Sciences (NMBU), Ås, Norway
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Homsana A, Southisavath P, Kling K, Hattendorf J, Vorasane S, Paris DH, Sayasone S, Odermatt P, Probst-Hensch N. Steatotic liver disease among lean and non-lean individuals in Southern Lao PDR: a cross-sectional study of risk factors. Ann Med 2024; 56:2329133. [PMID: 38502916 PMCID: PMC10953781 DOI: 10.1080/07853890.2024.2329133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 02/24/2024] [Indexed: 03/21/2024] Open
Abstract
BACKGROUND Steatotic liver disease (SLD) prevalence is rising worldwide, linked to insulin resistance and obesity. SLD prevalence can surpass 10% even among those with normal weight. In Lao People's Democratic Republic (Lao PDR), where Opisthorchis viverrini (OV) trematode infection and type 2 diabetes mellitus (T2DM) are common, infection related liver morbidity such as cholangiocarcinoma (CCA) is high, but data on SLD prevalence is lacking. The objective of this study was to estimate the prevalence and explore determinants of SLD in rural southern Lao PDR for lean and non-lean populations. METHOD A cross-sectional community-based study assessed SLD prevalence using abdominal ultrasonography (US). Factors investigated for association with SLD were identified by interview, serological tests (Hepatitis B surface antigen (HBsAg); lipids and HbA1c), anthropometrical measurements, and parasitological assessments (OV infection). Uni- and multivariable logistic regression analyses with SLD as endpoint were conducted separately for lean (body mass index (BMI) <23.0 kg/m2) and non-lean (BMI ≥ 23.0 kg/m2) participants. RESULT 2,826 participants were included. SLD prevalence was 27.1% (95% confidence interval (95% CI) 24.0%-30.4%), higher among non-lean (39.8%) than lean individuals (17.4%). Lean individuals with OV infection had a statistically significant association with lower odds of SLD (adjusted odds ratio (aOR) 0.49, 95% CI 0.33 - 0.73). T2DM showed a significant positive association with SLD in both lean (aOR 3.58, 95% CI 2.28 - 5.63) and non-lean individuals (aOR 3.31, 95% CI 2.31 - 4.74) while dyslipidemia was significantly associated only in the non-lean group (aOR 1.83, 95% CI 1.09 - 3.07). Females participants exhibited elevated odds of SLD in both lean (aOR 1.43, 95% CI 1.02 - 2.01) and non-lean SLD (aOR 1.50, 95% CI 1.12 - 2.01). CONCLUSION SLD prevalence is notably high among Laotian adults in rural areas, particularly in females and in non-lean individuals. Lean individuals with OV infection exhibited lower SLD prevalence. SLD was more prevalent in individuals with T2DM, independent of BMI. SLD adds to the burden of infection-related liver morbidity in Lao PDR.
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Affiliation(s)
- Anousin Homsana
- Lao Tropical and Public Health Institute, Ministry of Health, Vientiane Capital, Lao PDR
- Swiss Tropical and Public Health Institute, Allschwil, Switzerland
- University of Basel, Basel, Switzerland
| | - Phonesavanh Southisavath
- Lao Tropical and Public Health Institute, Ministry of Health, Vientiane Capital, Lao PDR
- Swiss Tropical and Public Health Institute, Allschwil, Switzerland
- University of Basel, Basel, Switzerland
- Department of Radiology, Mahosot Hospital, Ministry of Health, Vientiane Capital, Lao PDR
| | - Kerstin Kling
- Immunization Unit, Robert Koch Institute, Berlin, Germany
| | - Jan Hattendorf
- Swiss Tropical and Public Health Institute, Allschwil, Switzerland
- University of Basel, Basel, Switzerland
| | - Savina Vorasane
- Department of Radiology, Mahosot Hospital, Ministry of Health, Vientiane Capital, Lao PDR
| | - Daniel Henry Paris
- Swiss Tropical and Public Health Institute, Allschwil, Switzerland
- University of Basel, Basel, Switzerland
| | - Somphou Sayasone
- Lao Tropical and Public Health Institute, Ministry of Health, Vientiane Capital, Lao PDR
| | - Peter Odermatt
- Swiss Tropical and Public Health Institute, Allschwil, Switzerland
- University of Basel, Basel, Switzerland
| | - Nicole Probst-Hensch
- Swiss Tropical and Public Health Institute, Allschwil, Switzerland
- University of Basel, Basel, Switzerland
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Planas AM. Role of microglia in stroke. Glia 2024; 72:1016-1053. [PMID: 38173414 DOI: 10.1002/glia.24501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 12/07/2023] [Accepted: 12/19/2023] [Indexed: 01/05/2024]
Abstract
Microglia play key roles in the post-ischemic inflammatory response and damaged tissue removal reacting rapidly to the disturbances caused by ischemia and working to restore the lost homeostasis. However, the modified environment, encompassing ionic imbalances, disruption of crucial neuron-microglia interactions, spreading depolarization, and generation of danger signals from necrotic neurons, induce morphological and phenotypic shifts in microglia. This leads them to adopt a proinflammatory profile and heighten their phagocytic activity. From day three post-ischemia, macrophages infiltrate the necrotic core while microglia amass at the periphery. Further, inflammation prompts a metabolic shift favoring glycolysis, the pentose-phosphate shunt, and lipid synthesis. These shifts, combined with phagocytic lipid intake, drive lipid droplet biogenesis, fuel anabolism, and enable microglia proliferation. Proliferating microglia release trophic factors contributing to protection and repair. However, some microglia accumulate lipids persistently and transform into dysfunctional and potentially harmful foam cells. Studies also showed microglia that either display impaired apoptotic cell clearance, or eliminate synapses, viable neurons, or endothelial cells. Yet, it will be essential to elucidate the viability of engulfed cells, the features of the local environment, the extent of tissue damage, and the temporal sequence. Ischemia provides a rich variety of region- and injury-dependent stimuli for microglia, evolving with time and generating distinct microglia phenotypes including those exhibiting proinflammatory or dysfunctional traits and others showing pro-repair features. Accurate profiling of microglia phenotypes, alongside with a more precise understanding of the associated post-ischemic tissue conditions, is a necessary step to serve as the potential foundation for focused interventions in human stroke.
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Affiliation(s)
- Anna M Planas
- Cerebrovascular Research Laboratory, Department of Neuroscience and Experimental Therapeutics, Instituto de Investigaciones Biomédicas de Barcelona (IIBB), Consejo Superior de Investigaciones Científicas (CSIC), Barcelona, Spain
- Cerebrovascular Diseases, Area of Clinical and Experimental Neuroscience, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS)-Hospital Clínic, Barcelona, Spain
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Vaage AM, Benth JŠ, Meyer HE, Holmøy T, Nakken O. Premorbid lipid levels and long-term risk of ALS-a population-based cohort study. Amyotroph Lateral Scler Frontotemporal Degener 2024; 25:358-366. [PMID: 38117120 DOI: 10.1080/21678421.2023.2295455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 12/11/2023] [Indexed: 12/21/2023]
Abstract
OBJECTIVE To assess the temporal relationship between premorbid lipid levels and long-term amyotrophic lateral sclerosis (ALS) risk. METHODS From Norwegian cardiovascular health surveys (1974-2003), we collected information on total cholesterol (TC), triglycerides (TG), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), glucose, and other cardiovascular risk factors. ALS incidence and mortality were identified through validated Norwegian health registries. The relation between premorbid lipid levels and ALS risk was assessed by Cox regression models. RESULTS Out of 640,066 study participants (51.5% females), 974 individuals (43.5% females) developed ALS. Mean follow-up time was 23.7 (SD 7.1) years among ALS cases. One mmol/l increase in LDL-C was associated with 6% increase in risk for ALS (hazard ratio 1.06 [95% CI: 1.01-1.09]). Higher levels of TC and TG were also associated with increased ALS risk, but only within the last 6-7 years prior to ALS diagnosis or death. No association between HDL-C and ALS risk was found. Adjusting for body mass index, birth cohort, smoking, and physical activity did not alter the results. CONCLUSIONS Higher levels of LDL-C are associated with increased ALS risk over 40 years later, compatible with a causal relationship. The temporal relationship between TG, TC, and ALS risk suggests that increased levels of these lipid biomarkers represent consequences of ALS.
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Affiliation(s)
- Anders Myhre Vaage
- Department of Neurology, Akershus University Hospital, Lørenskog, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Jūratė Šaltytė Benth
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Health Services Research Unit, Akershus University Hospital, Lørenskog, Norway
| | - Haakon E Meyer
- Department of Physical Health and Ageing, Norwegian Institute of Public Health, Oslo, Norway, and
- Department of Community Medicine and Global Health, University of Oslo, Oslo, Norway
| | - Trygve Holmøy
- Department of Neurology, Akershus University Hospital, Lørenskog, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Ola Nakken
- Department of Neurology, Akershus University Hospital, Lørenskog, Norway
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Doi T, Langsted A, Nordestgaard BG. Mass changes in remnant cholesterol and LDL cholesterol explain part of the results of gemfibrozil and non-gemfibrozil fibrate trials. J Intern Med 2024; 295:707-710. [PMID: 38343109 DOI: 10.1111/joim.13771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Affiliation(s)
- Takahito Doi
- Department of Clinical Biochemistry, Copenhagen University Hospital, Herlev and Gentofte, Herlev, Denmark
- The Copenhagen General Population Study, Copenhagen University Hospital, Herlev and Gentofte, Herlev, Denmark
- Faculty of Health and Medical Sciences, Institute of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Anne Langsted
- Department of Clinical Biochemistry, Copenhagen University Hospital, Herlev and Gentofte, Herlev, Denmark
- The Copenhagen General Population Study, Copenhagen University Hospital, Herlev and Gentofte, Herlev, Denmark
- Faculty of Health and Medical Sciences, Institute of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Børge G Nordestgaard
- Department of Clinical Biochemistry, Copenhagen University Hospital, Herlev and Gentofte, Herlev, Denmark
- The Copenhagen General Population Study, Copenhagen University Hospital, Herlev and Gentofte, Herlev, Denmark
- Faculty of Health and Medical Sciences, Institute of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
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Marques TC, Monteiro HF, Melo DB, Coelho WM, Salman S, Marques LR, Leão KM, Machado VS, Menta P, Dubey D, Sun F, Lima FS. Effect of rumen-protected choline on dairy cow metabolism, immunity, lactation performance, and vaginal discharge microbiome. J Dairy Sci 2024; 107:2864-2882. [PMID: 38101729 DOI: 10.3168/jds.2023-23850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 11/12/2023] [Indexed: 12/17/2023]
Abstract
Rumen-protected choline (RPC) promotes benefits in milk production, immunity, and health in dairy cows by optimizing lipid metabolism during transition period management and early lactation. However, the RPC success in dairy cows depends on choline bioavailability, which is affected by the type of protection used in rumen-protected choline. Therefore, our objectives were to determine the effects of a novel RPC on dry matter intake (DMI), identify markers of metabolism and immunity, and evaluate lactation performance. Dry Holstein (n = 48) cows at 245 ± 3 d of gestation were blocked by parity and assigned to control or RPC treatment within each block. Cows enrolled in the RPC treatment received 15 g/d of CholiGEM (Kemin Industries, Cavriago RE, Italy) from 21 d prepartum and 30 g/d of CholiGEM from calving to 21 d postpartum. During the transition period, DMI was measured daily, and blood was sampled weekly for energy-related metabolites such as β-hydroxybutyrate (BHB), glucose, and nonesterified fatty acids (NEFA), as well as immune function markers such as haptoglobin (Hp) and lipopolysaccharide-binding protein (LPB). Vaginal discharge samples were collected at the calving and 7 d postpartum and stored in microcentrifuge tubes at -80°C until 16S rRNA sequencing. The main responses of body condition score, body weight, DMI, milk yield, milk components, and immune function markers were analyzed using the GLIMMIX procedure of SAS with the effects of treatment, time, parity, and relevant covariates added to the models. The relative abundance of microbiome α-diversity was evaluated by 3 indexes (Chao1, Shannon, and Simpson) and β-diversity by principal coordinate analysis and permutational multivariate ANOVA. We found no differences in DMI in the pre- and postpartum periods. Cows fed RPC increased the yields of energy- and 3.5% fat-corrected milk and fat yield in primiparous and multiparous cows, with an interaction between treatment and parity for these lactation variables. However, we found no differences in milk protein and lactose up to 150 DIM between treatments. Glucose, NEFA, and BHB had no differences between the treatments. However, RPC decreased BHB numerically (control = 1.07 ± 0.13 vs. RPC = 0.63 ± 0.13) in multiparous on the third week postpartum and tended to reduce the incidence of subclinical ketosis (12.7% vs. 4.2%). No effects for Hp and LPB were found in cows fed RPC. Chao1, Shannon, and Simpson indexes were lower at calving in the RPC treatment than in the Control. However, no differences were found 7 d later for Chao1, Shannon, and Simpson indexes. The vaginal discharge microbiome was altered in cows fed RPC at 7 d postpartum. Fusobacterium, a common pathogen associated with metritis, was reduced in cows fed RPC. Rumen-protected choline enhanced lactation performance and health and altered the vaginal discharge microbiome which is a potential proxy for uterine healthy in dairy cows. The current study's findings corroborate that RPC is a tool to support adaptation to lactation and shed light on opportunities for further research in reproductive health.
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Affiliation(s)
- T C Marques
- Department of Population Health and Reproduction, University of California-Davis, Davis, CA 95616; Department of Animal Science, Instituto Federal Goiano, Rio Verde, Goias 75901-970, Brazil
| | - H F Monteiro
- Department of Population Health and Reproduction, University of California-Davis, Davis, CA 95616
| | - D B Melo
- Department of Population Health and Reproduction, University of California-Davis, Davis, CA 95616
| | - W M Coelho
- Department of Population Health and Reproduction, University of California-Davis, Davis, CA 95616
| | - S Salman
- Department of Population Health and Reproduction, University of California-Davis, Davis, CA 95616
| | - L R Marques
- Department of Animal Science, Instituto Federal Goiano, Rio Verde, Goias 75901-970, Brazil
| | - K M Leão
- Department of Animal Science, Instituto Federal Goiano, Rio Verde, Goias 75901-970, Brazil
| | - V S Machado
- Department of Veterinary Sciences, College of Agricultural Sciences and Natural Resources, Texas Tech University, Lubbock, TX 79409
| | - P Menta
- Department of Veterinary Sciences, College of Agricultural Sciences and Natural Resources, Texas Tech University, Lubbock, TX 79409
| | - D Dubey
- Kemin Europa NV, Herentals 2640, Belgium
| | - F Sun
- Kemin Industries Inc., Des Moines, IA 50317
| | - F S Lima
- Department of Population Health and Reproduction, University of California-Davis, Davis, CA 95616.
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Tian Q, Chung H, Wen D. The role of lipids in genome integrity and pluripotency. Biochem Soc Trans 2024; 52:639-650. [PMID: 38506536 DOI: 10.1042/bst20230479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 03/05/2024] [Accepted: 03/11/2024] [Indexed: 03/21/2024]
Abstract
Pluripotent stem cells (PSCs), comprising embryonic stem cells (ESCs) and induced pluripotent stem cells (iPSCs), offer immense potential for regenerative medicine due to their ability to differentiate into all cell types of the adult body. A critical aspect of harnessing this potential is understanding their metabolic requirements during derivation, maintenance, and differentiation in vitro. Traditional culture methods using fetal bovine serum often lead to issues such as heterogeneous cell populations and diminished pluripotency. Although the chemically-defined 2i/LIF medium has provided solutions to some of these challenges, prolonged culturing of these cells, especially female ESCs, raises concerns related to genome integrity. This review discusses the pivotal role of lipids in genome stability and pluripotency of stem cells. Notably, the introduction of lipid-rich albumin, AlbuMAX, into the 2i/LIF culture medium offers a promising avenue for enhancing the genomic stability and pluripotency of cultured ESCs. We further explore the unique characteristics of lipid-induced pluripotent stem cells (LIP-ESCs), emphasizing their potential in regenerative medicine and pluripotency research.
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Affiliation(s)
- Qiyu Tian
- Ronald O. Perelman and Claudia Cohen Center for Reproductive Medicine, Weill Cornell Medicine, New York, NY 10065, U.S.A
| | - Hoyoung Chung
- Ronald O. Perelman and Claudia Cohen Center for Reproductive Medicine, Weill Cornell Medicine, New York, NY 10065, U.S.A
| | - Duancheng Wen
- Ronald O. Perelman and Claudia Cohen Center for Reproductive Medicine, Weill Cornell Medicine, New York, NY 10065, U.S.A
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Wong ND, Fan W, Hu X, Ballantyne C, Hoodgeveen RC, Tsai MY, Browne A, Budoff MJ. Lipoprotein(a) and Long-Term Cardiovascular Risk in a Multi-Ethnic Pooled Prospective Cohort. J Am Coll Cardiol 2024; 83:1511-1525. [PMID: 38631771 DOI: 10.1016/j.jacc.2024.02.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 02/02/2024] [Accepted: 02/21/2024] [Indexed: 04/19/2024]
Abstract
BACKGROUND Lipoprotein(a) (Lp[a]) is a causal genetic risk factor for atherosclerotic cardiovascular disease (ASCVD). There are limited long-term follow-up data from large U.S. population cohorts. OBJECTIVES This study examined the relationship of Lp(a) with ASCVD outcomes in a large, pooled, multi-ethnic U.S. COHORT METHODS The study included data on Lp(a) and ASCVD outcomes from 5 U.S. PROSPECTIVE STUDIES MESA (Multi-Ethnic Study of Atherosclerosis), CARDIA (Coronary Artery Risk Development in Young Adults), JHS (Jackson Heart Study), FHS-OS (Framingham Heart Study-Offspring), and ARIC (Atherosclerosis Risk In Communities). Lp(a) levels were classified on the basis of cohort-specific percentiles. Multivariable Cox regression related Lp(a) with composite incident ASCVD events by risk group and diabetes status. RESULTS The study included 27,756 persons without previous ASCVD who were aged 20 to 79 years, including 55.0% women, 35.6% Black participants, and 7.6% patients with diabetes, with mean follow-up of 21.1 years. Compared with Lp(a) levels <50th percentile, Lp(a) levels in the 50th to <75th, 75th to <90th, and ≥90th percentiles had adjusted HRs of 1.06 (95% CI: 0.99-1.14), 1.18 (95% CI: 1.09-1.28), and 1.46 (95% CI: 1.33-1.59), respectively for ASCVD events. Elevated Lp(a) predicted incident ASCVD events similarly by risk group, sex, and race or ethnic groups, but more strongly in patients with vs without diabetes (interaction P = 0.0056), with HRs for Lp(a) levels ≥90th percentile of 1.92 (95% CI: 1.50-2.45) and 1.41 (95% CI: 1.28-1.55), respectively. Lp(a) also individually predicted myocardial infarction, revascularization, stroke, and coronary heart disease death, but not total mortality. CONCLUSIONS The study shows, in a large U.S. pooled cohort, that higher Lp(a) levels are associated with an increased ASCVD risk, including in patients with diabetes.
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Affiliation(s)
- Nathan D Wong
- Division of Cardiology, University of California-Irvine, Irvine, California, USA; Department of Epidemiology and Biostatistics, University of California-Irvine, Irvine, California, USA.
| | - Wenjun Fan
- Division of Cardiology, University of California-Irvine, Irvine, California, USA; Department of Epidemiology and Biostatistics, University of California-Irvine, Irvine, California, USA
| | - Xingdi Hu
- Novartis Pharmaceuticals Corporation, East Hanover, New Jersey, USA
| | - Christie Ballantyne
- Division of Cardiology, Baylor College of Medicine and the Texas Heart Institute, Houston, Texas, USA
| | - Ron C Hoodgeveen
- Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Michael Y Tsai
- Department of Laboratory Medicine and Pathology, University of Minnesota Medical School, Minneapolis, Minnesota, USA
| | - Auris Browne
- Novartis Pharmaceuticals Corporation, East Hanover, New Jersey, USA
| | - Matthew J Budoff
- Division of Cardiology, Lundquist Institute, Harbor-UCLA Medical Center, Torrance, California, USA
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Schwartz GG. Lipoprotein(a): An Equal Opportunity Risk Factor. J Am Coll Cardiol 2024; 83:1526-1528. [PMID: 38631772 DOI: 10.1016/j.jacc.2024.03.356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Accepted: 03/06/2024] [Indexed: 04/19/2024]
Affiliation(s)
- Gregory G Schwartz
- Rocky Mountain Regional VA Medical Center and University of Colorado School of Medicine, Aurora, Colorado, USA.
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Ding S, Hamm JN, Bale NJ, Sinninghe Damsté JS, Spang A. Selective lipid recruitment by an archaeal DPANN symbiont from its host. Nat Commun 2024; 15:3405. [PMID: 38649682 PMCID: PMC11035636 DOI: 10.1038/s41467-024-47750-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 04/11/2024] [Indexed: 04/25/2024] Open
Abstract
The symbiont Ca. Nanohaloarchaeum antarcticus is obligately dependent on its host Halorubrum lacusprofundi for lipids and other metabolites due to its lack of certain biosynthetic genes. However, it remains unclear which specific lipids or metabolites are acquired from its host, and how the host responds to infection. Here, we explored the lipidome dynamics of the Ca. Nha. antarcticus - Hrr. lacusprofundi symbiotic relationship during co-cultivation. By using a comprehensive untargeted lipidomic methodology, our study reveals that Ca. Nha. antarcticus selectively recruits 110 lipid species from its host, i.e., nearly two-thirds of the total number of host lipids. Lipid profiles of co-cultures displayed shifts in abundances of bacterioruberins and menaquinones and changes in degree of bilayer-forming glycerolipid unsaturation. This likely results in increased membrane fluidity and improved resistance to membrane disruptions, consistent with compensation for higher metabolic load and mechanical stress on host membranes when in contact with Ca. Nha. antarcticus cells. Notably, our findings differ from previous observations of other DPANN symbiont-host systems, where no differences in lipidome composition were reported. Altogether, our work emphasizes the strength of employing untargeted lipidomics approaches to provide details into the dynamics underlying a DPANN symbiont-host system.
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Affiliation(s)
- Su Ding
- Department of Marine Microbiology and Biogeochemistry, NIOZ Royal Institute for Sea Research, Texel, The Netherlands.
| | - Joshua N Hamm
- Department of Marine Microbiology and Biogeochemistry, NIOZ Royal Institute for Sea Research, Texel, The Netherlands.
| | - Nicole J Bale
- Department of Marine Microbiology and Biogeochemistry, NIOZ Royal Institute for Sea Research, Texel, The Netherlands
| | - Jaap S Sinninghe Damsté
- Department of Marine Microbiology and Biogeochemistry, NIOZ Royal Institute for Sea Research, Texel, The Netherlands
- Department of Earth Sciences, Faculty of Geosciences, Utrecht University, Utrecht, The Netherlands
| | - Anja Spang
- Department of Marine Microbiology and Biogeochemistry, NIOZ Royal Institute for Sea Research, Texel, The Netherlands
- Department of Evolutionary & Population Biology, Institute for Biodiversity and Ecosystem Dynamics (IBED), University of Amsterdam, Amsterdam, The Netherlands
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Oz S, Saar G, Olszakier S, Heinrich R, Kompanets MO, Berlin S. Revealing the MRI-Contrast in Optically Cleared Brains. Adv Sci (Weinh) 2024:e2400316. [PMID: 38647385 DOI: 10.1002/advs.202400316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 04/10/2024] [Indexed: 04/25/2024]
Abstract
The current consensus holds that optically-cleared specimens are unsuitable for Magnetic Resonance Imaging (MRI); exhibiting absence of contrast. Prior studies combined MRI with tissue-clearing techniques relying on the latter's ability to eliminate lipids, thereby fostering the assumption that lipids constitute the primary source of ex vivo MRI-contrast. Nevertheless, these findings contradict an extensive body of literature that underscores the contribution of other features to contrast. Furthermore, it remains unknown whether non-delipidating clearing methods can produce MRI-compatible specimens or whether MRI-contrast can be re-established. These limitations hinder the development of multimodal MRI-light-microscopy (LM) imaging approaches. This study assesses the relation between MRI-contrast, and delipidation in optically-cleared whole brains following different tissue-clearing approaches. It is demonstrated that uDISCO and ECi-brains are MRI-compatible upon tissue rehydration, despite both methods' substantial delipidating-nature. It is also demonstrated that, whereas Scale-clearing preserves most lipids, Scale-cleared brain lack MRI-contrast. Furthermore, MRI-contrast is restored to lipid-free CLARITY-brains without introducing lipids. Our results thereby dissociate between the essentiality of lipids to MRI-contrast. A tight association is found between tissue expansion, hyperhydration and loss of MRI-contrast. These findings then enabled us to develop a multimodal MRI-LM-imaging approach, opening new avenues to bridge between the micro- and mesoscale for biomedical research and clinical applications.
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Affiliation(s)
- Shimrit Oz
- Department of Neuroscience, Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, 3525433, Israel
| | - Galit Saar
- Biomedical Core Facility, Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, 3525433, Israel
| | - Shunit Olszakier
- Department of Neuroscience, Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, 3525433, Israel
| | - Ronit Heinrich
- Department of Neuroscience, Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, 3525433, Israel
| | - Mykhail O Kompanets
- L.M. Litvinenko Institute of Physico-Organic Chemistry and Coal Chemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Shai Berlin
- Department of Neuroscience, Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, 3525433, Israel
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12
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Abodi M, Mazzocchi A, Risé P, Marangoni F, Agostoni C, Milani GP. Salivary fatty acids in humans: a comprehensive literature review. Clin Chem Lab Med 2024; 0:cclm-2024-0177. [PMID: 38634552 DOI: 10.1515/cclm-2024-0177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 04/10/2024] [Indexed: 04/19/2024]
Abstract
Fatty acids (FAs) exert diverse biological functions in humans, influencing physiological responses and, ultimately, health and disease risk. The analysis of FAs in human samples has significant implications and attracts interest in diagnostics and research. The standard method for assessing FA profiles involves the collection of blood samples, which can be inconvenient, invasive, and potentially painful, particularly for young individuals outside hospital settings. Saliva emerged as a promising alternative for evaluating FA profiles in both clinical and research settings. However, to the best of our knowledge, an updated synthesis of the related evidence is unavailable. This comprehensive review aims to summarize data on FA analysis and highlight the potential of the use of salivary FAs as a biomarker in health and disease. Over the past decade, there has been a growing interest in studying salivary FAs in chronic diseases, and more recently, researchers have explored the prognostic value of FAs in acute conditions to check the availability of a non-invasive sampling methodology. A deeper understanding of salivary FAs could have relevant implications both for healthy individuals and patients, particularly in elucidating the correlation between the dietary lipidic content and salivary FA level, Finally, it is crucial to address the standardization of the methods as the sampling, processing, and analysis of saliva are heterogeneous among studies, and limited correlation between blood FAs and salivary FAs is available.
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Affiliation(s)
- Martina Abodi
- Department of Clinical Sciences and Community Health, 9304 University of Milan , Milan, Italy
| | - Alessandra Mazzocchi
- Department of Clinical Sciences and Community Health, 9304 University of Milan , Milan, Italy
| | - Patrizia Risé
- Department of Pharmaceutical Sciences, 9304 University of Milan , Milan, Italy
| | | | - Carlo Agostoni
- Department of Clinical Sciences and Community Health, 9304 University of Milan , Milan, Italy
- Pediatric Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Gregorio Paolo Milani
- Department of Clinical Sciences and Community Health, 9304 University of Milan , Milan, Italy
- Pediatric Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
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13
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Zirem Y, Ledoux L, Roussel L, Maurage CA, Tirilly P, Le Rhun É, Meresse B, Yagnik G, Lim MJ, Rothschild KJ, Duhamel M, Salzet M, Fournier I. Real-time glioblastoma tumor microenvironment assessment by SpiderMass for improved patient management. Cell Rep Med 2024; 5:101482. [PMID: 38552622 PMCID: PMC11031375 DOI: 10.1016/j.xcrm.2024.101482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 01/15/2024] [Accepted: 03/01/2024] [Indexed: 04/19/2024]
Abstract
Glioblastoma is a highly heterogeneous and infiltrative form of brain cancer associated with a poor outcome and limited therapeutic effectiveness. The extent of the surgery is related to survival. Reaching an accurate diagnosis and prognosis assessment by the time of the initial surgery is therefore paramount in the management of glioblastoma. To this end, we are studying the performance of SpiderMass, an ambient ionization mass spectrometry technology that can be used in vivo without invasiveness, coupled to our recently established artificial intelligence pipeline. We demonstrate that we can both stratify isocitrate dehydrogenase (IDH)-wild-type glioblastoma patients into molecular sub-groups and achieve an accurate diagnosis with over 90% accuracy after cross-validation. Interestingly, the developed method offers the same accuracy for prognosis. In addition, we are testing the potential of an immunoscoring strategy based on SpiderMass fingerprints, showing the association between prognosis and immune cell infiltration, to predict patient outcome.
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Affiliation(s)
- Yanis Zirem
- Université de Lille, Inserm, CHU Lille, U1192 - Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, 59000 Lille, France
| | - Léa Ledoux
- Université de Lille, Inserm, CHU Lille, U1192 - Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, 59000 Lille, France
| | - Lucas Roussel
- Université de Lille, Inserm, CHU Lille, U1192 - Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, 59000 Lille, France
| | | | - Pierre Tirilly
- Université de Lille, CNRS, Centrale Lille, UMR 9189 CRIStAL, 59000 Lille, France
| | - Émilie Le Rhun
- Université de Lille, Inserm, CHU Lille, U1192 - Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, 59000 Lille, France; Departments of Neurosurgery and Neurology, Clinical Neuroscience Center, University Hospital of Zurich, University of Zurich, Zurich, Switzerland
| | - Bertrand Meresse
- Université de Lille, Inserm, CHU Lille, U1286 - INFINITE - Institute for Translational Research in Inflammation, 59000 Lille, France
| | | | | | - Kenneth J Rothschild
- AmberGen, Inc., Billerica, MA, USA; Department of Physics and Photonics Center, Boston University, Boston, MA, USA
| | - Marie Duhamel
- Université de Lille, Inserm, CHU Lille, U1192 - Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, 59000 Lille, France
| | - Michel Salzet
- Université de Lille, Inserm, CHU Lille, U1192 - Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, 59000 Lille, France; Institut Universitaire de France (IUF), Paris, France.
| | - Isabelle Fournier
- Université de Lille, Inserm, CHU Lille, U1192 - Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, 59000 Lille, France; Institut Universitaire de France (IUF), Paris, France.
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14
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Nadezhdin KD, Correia L, Shalygin A, Aktolun M, Neuberger A, Gudermann T, Kurnikova MG, Chubanov V, Sobolevsky AI. Structural basis of selective TRPM7 inhibition by the anticancer agent CCT128930. Cell Rep 2024; 43:114108. [PMID: 38615321 DOI: 10.1016/j.celrep.2024.114108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 03/07/2024] [Accepted: 03/28/2024] [Indexed: 04/16/2024] Open
Abstract
TRP channels are implicated in various diseases, but high structural similarity between them makes selective pharmacological modulation challenging. Here, we study the molecular mechanism underlying specific inhibition of the TRPM7 channel, which is essential for cancer cell proliferation, by the anticancer agent CCT128930 (CCT). Using cryo-EM, functional analysis, and MD simulations, we show that CCT binds to a vanilloid-like (VL) site, stabilizing TRPM7 in the closed non-conducting state. Similar to other allosteric inhibitors of TRPM7, NS8593 and VER155008, binding of CCT is accompanied by displacement of a lipid that resides in the VL site in the apo condition. Moreover, we demonstrate the principal role of several residues in the VL site enabling CCT to inhibit TRPM7 without impacting the homologous TRPM6 channel. Hence, our results uncover the central role of the VL site for the selective interaction of TRPM7 with small molecules that can be explored in future drug design.
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Affiliation(s)
- Kirill D Nadezhdin
- Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY, USA
| | - Leonor Correia
- Walther-Straub Institute of Pharmacology and Toxicology, LMU Munich, Munich, Germany
| | - Alexey Shalygin
- Comprehensive Pneumology Center, a Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Muhammed Aktolun
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Arthur Neuberger
- Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY, USA
| | - Thomas Gudermann
- Walther-Straub Institute of Pharmacology and Toxicology, LMU Munich, Munich, Germany; Comprehensive Pneumology Center, a Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Maria G Kurnikova
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Vladimir Chubanov
- Walther-Straub Institute of Pharmacology and Toxicology, LMU Munich, Munich, Germany.
| | - Alexander I Sobolevsky
- Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY, USA.
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15
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Rutkowsky JM, Roland Z, Valenzuela A, Nguyen AB, Park HH, Six N, Dursun I, Kim K, Lein PJ, Ramsey JJ. The impact of continuous and intermittent ketogenic diets on cognitive behavior, motor function, and blood lipids in TgF344-AD rats. Aging (Albany NY) 2024; 16:5811-5828. [PMID: 38613791 DOI: 10.18632/aging.205741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 03/13/2024] [Indexed: 04/15/2024]
Abstract
Studies suggest that ketogenic diets (KD) may improve memory in mouse models of aging and Alzheimer's disease (AD). This study determined whether a continuous or intermittent KD (IKD) enhanced cognitive behavior in the TgF344-AD rat model of AD. At 6 months-old, TgF344-AD and wild-type (WT) littermates were placed on a control (CD), KD, or IKD (morning CD and afternoon KD) provided as two meals per day for 2 or 6 months. Cognitive and motor behavior and circulating β-hydroxybutyrate (BHB), AD biomarkers and blood lipids were assessed. Animals on a KD diet had elevated circulating BHB, with IKD levels intermediate to CD and KD. TgF344-AD rats displayed impaired spatial learning memory in the Barnes maze at 8 and 12 months of age and impaired motor coordination at 12 months of age. Neither KD nor IKD improved performance compared to CD. At 12 months of age, TgF344-AD animals had elevated blood lipids. IKD reduced lipids to WT levels with KD further reducing cholesterol below WT levels. This study shows that at 8 or 12 months of age, KD or IKD intervention did not improve measures of cognitive or motor behavior in TgF344-AD rats; however, both IKD and KD positively impacted circulating lipids.
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Affiliation(s)
- Jennifer M Rutkowsky
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
| | - Zabrisky Roland
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
| | - Anthony Valenzuela
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
| | - An B Nguyen
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
| | - Heui Hye Park
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
| | - Natalie Six
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
| | - Ilknur Dursun
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
- Department of Physiology, School of Medicine, Istinye University, Istanbul 34396, Turkey
| | - Kyoungmi Kim
- Department of Public Health Sciences, School of Medicine, University of California, Davis, CA 95616, USA
| | - Pamela J Lein
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
- The MIND Institute, School of Medicine, University of California, Davis, CA 95817, USA
- Center for Neuroscience, University of California, Davis, CA 95616, USA
| | - Jon J Ramsey
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
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16
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Kimura T, Miyashita K, Fukamachi I, Fukamachi K, Ogura K, Yokoyama E, Tsunekawa K, Nagasawa T, Ploug M, Yang Y, Song W, Young SG, Beigneux AP, Nakajima K, Murakami M. Quantification of lipoprotein lipase in mouse plasma with a sandwich enzyme-linked immunosorbent assay. J Lipid Res 2024; 65:100532. [PMID: 38608546 PMCID: PMC11017283 DOI: 10.1016/j.jlr.2024.100532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 03/03/2024] [Accepted: 03/06/2024] [Indexed: 04/14/2024] Open
Abstract
To support in vivo and in vitro studies of intravascular triglyceride metabolism in mice, we created rat monoclonal antibodies (mAbs) against mouse LPL. Two mAbs, mAbs 23A1 and 31A5, were used to develop a sandwich ELISA for mouse LPL. The detection of mouse LPL by the ELISA was linear in concentrations ranging from 0.31 ng/ml to 20 ng/ml. The sensitivity of the ELISA made it possible to quantify LPL in serum and in both pre-heparin and post-heparin plasma samples (including in grossly lipemic samples). LPL mass and activity levels in the post-heparin plasma were lower in Gpihbp1-/- mice than in wild-type mice. In both groups of mice, LPL mass and activity levels were positively correlated. Our mAb-based sandwich ELISA for mouse LPL will be useful for any investigator who uses mouse models to study LPL-mediated intravascular lipolysis.
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Affiliation(s)
- Takao Kimura
- Department of Clinical Laboratory Medicine, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan; Clinical Laboratory Center, Gunma University Hospital, Maebashi, Gunma, Japan.
| | | | | | | | - Kazumi Ogura
- Immuno-Biological Laboratories, Fujioka, Gunma, Japan
| | | | - Katsuhiko Tsunekawa
- Department of Clinical Laboratory Medicine, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan; Clinical Laboratory Center, Gunma University Hospital, Maebashi, Gunma, Japan
| | - Takumi Nagasawa
- Department of Clinical Laboratory Medicine, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan; Clinical Laboratory Center, Gunma University Hospital, Maebashi, Gunma, Japan
| | - Michael Ploug
- Finsen Laboratory, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark; Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
| | - Ye Yang
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - Wenxin Song
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - Stephen G Young
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, USA; Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - Anne P Beigneux
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - Katsuyuki Nakajima
- Department of Clinical Laboratory Medicine, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Masami Murakami
- Department of Clinical Laboratory Medicine, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan; Clinical Laboratory Center, Gunma University Hospital, Maebashi, Gunma, Japan
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17
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Pan H, Shim A, Lubin MB, Belin BJ. Hopanoid lipids promote soybean -Bradyrhizobium symbiosis. mBio 2024; 15:e0247823. [PMID: 38445860 PMCID: PMC11005386 DOI: 10.1128/mbio.02478-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 01/04/2024] [Indexed: 03/07/2024] Open
Abstract
The symbioses between leguminous plants and nitrogen-fixing bacteria known as rhizobia are well known for promoting plant growth and sustainably increasing soil nitrogen. Recent evidence indicates that hopanoids, a family of steroid-like lipids, promote Bradyrhizobium symbioses with tropical legumes. To characterize hopanoids in Bradyrhizobium symbiosis with soybean, we validated a recently published cumate-inducible hopanoid mutant of Bradyrhizobium diazoefficiens USDA110, Pcu-shc::∆shc. GC-MS analysis showed that this strain does not produce hopanoids without cumate induction, and under this condition, is impaired in growth in rich medium and under osmotic, temperature, and pH stress. In planta, Pcu-shc::∆shc is an inefficient soybean symbiont with significantly lower rates of nitrogen fixation and low survival within the host tissue. RNA-seq revealed that hopanoid loss reduces the expression of flagellar motility and chemotaxis-related genes, further confirmed by swim plate assays, and enhances the expression of genes related to nitrogen metabolism and protein secretion. These results suggest that hopanoids provide a significant fitness advantage to B. diazoefficiens in legume hosts and provide a foundation for future mechanistic studies of hopanoid function in protein secretion and motility. A major problem for global sustainability is feeding our exponentially growing human population while available arable land decreases. Harnessing the power of plant-beneficial microbes is a potential solution, including increasing our reliance on the symbioses of leguminous plants and nitrogen-fixing rhizobia. This study examines the role of hopanoid lipids in the symbiosis between Bradyrhizobium diazoefficiens USDA110, an important commercial inoculant strain, and its economically significant host soybean. Our research extends our knowledge of the functions of bacterial lipids in symbiosis to an agricultural context, which may one day help improve the practical applications of plant-beneficial microbes in agriculture.
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Affiliation(s)
- Huiqiao Pan
- Department of Embryology, Carnegie Institution for Science, Baltimore, Maryland, USA
| | - Ashley Shim
- Department of Embryology, Carnegie Institution for Science, Baltimore, Maryland, USA
- Department of Biology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Matthew B. Lubin
- Department of Embryology, Carnegie Institution for Science, Baltimore, Maryland, USA
- Department of Biology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Brittany J. Belin
- Department of Embryology, Carnegie Institution for Science, Baltimore, Maryland, USA
- Department of Biology, Johns Hopkins University, Baltimore, Maryland, USA
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18
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Amssayef A, Soulaimani B, Qabouche A, Abbad A, Eddouks M. Antihyperlipidemic effect and GC-MS analysis of phytoconstituents from Laurus nobilis essential oil in rat. Nat Prod Res 2024:1-7. [PMID: 38597184 DOI: 10.1080/14786419.2024.2340760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 03/31/2024] [Indexed: 04/11/2024]
Abstract
This study aimed to evaluate the effect of Laurus nobilis (L. nobilis) essential oil (EOs) (80 mg/kg) on Triton WR-1339-induced dyslipidemia in Wistar rats. The effect of L. nobilis essential oil (80 mg/kg) on lipid and lipoprotein profile was examined on Triton WR-1339-induced dyslipidemia in rats. Furthermore, the phytochemical evaluation was performed by GC-MS. In Addition, the acute toxicity of this EO was evaluated at a dose of 2 g/kg. The results revealed that the main constituents of L. nobilis EO were 1,8-cineole (39.5%), linalool (13.09%), and a-terpineol (11.55%). Furthermore, the EO did not cause any signs of toxicity or mortality, and the acute lethal dose 50 (LD50) was estimated to be higher than 2 g/kg. L. nobilis EO ameliorated lipid parameters and atherogenic indices. In conclusion, the study demonstrates that L. nobilis essential oils possess antidyslipidemic activity in acute model of hyperlipidaemia.
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Affiliation(s)
- Ayoub Amssayef
- Team of Ethnopharmacology and Pharmacognosy, Faculty of Sciences and Techniques Errachidia, Moulay Ismail University of Meknes, Errachidia, Morocco
| | - Bouchra Soulaimani
- Laboratory of Microbial Biotechnologies, Agrosciences and Environment, Labeled Research Unit-CNRST N°4, Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakech, Morocco
| | - Adil Qabouche
- Team of Ethnopharmacology and Pharmacognosy, Faculty of Sciences and Techniques Errachidia, Moulay Ismail University of Meknes, Errachidia, Morocco
| | - Abdelaziz Abbad
- Laboratory of Microbial Biotechnologies, Agrosciences and Environment, Labeled Research Unit-CNRST N°4, Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakech, Morocco
| | - Mohamed Eddouks
- Team of Ethnopharmacology and Pharmacognosy, Faculty of Sciences and Techniques Errachidia, Moulay Ismail University of Meknes, Errachidia, Morocco
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19
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Adams SA, Gurajapu A, Qiang A, Gerbaulet M, Schulz S, Tsutsui ND, Ramirez SR, Gillespie RG. Chemical species recognition in an adaptive radiation of Hawaiian Tetragnatha spiders (Araneae: Tetragnathidae). Proc Biol Sci 2024; 291:20232340. [PMID: 38593845 PMCID: PMC11003775 DOI: 10.1098/rspb.2023.2340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 03/05/2024] [Indexed: 04/11/2024] Open
Abstract
Studies of adaptive radiations have played a central role in our understanding of reproductive isolation. Yet the focus has been on human-biased visual and auditory signals, leaving gaps in our knowledge of other modalities. To date, studies on chemical signals in adaptive radiations have focused on systems with multimodal signalling, making it difficult to isolate the role chemicals play in reproductive isolation. In this study we examine the use of chemical signals in the species recognition and adaptive radiation of Hawaiian Tetragnatha spiders by focusing on entire communities of co-occurring species, and conducting behavioural assays in conjunction with chemical analysis of their silks using gas chromatography-mass spectrometry. Male spiders significantly preferred the silk extracts of conspecific mates over those of sympatric heterospecifics. The compounds found in the silk extracts, long chain alkyl methyl ethers, were remarkably species-specific in the combination and quantity. The differences in the profile were greatest between co-occurring species and between closely related sibling species. Lastly, there were significant differences in the chemical profile between two populations of a particular species. These findings provide key insights into the role chemical signals play in the attainment and maintenance of reproductive barriers between closely related co-occurring species.
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Affiliation(s)
- Seira A. Adams
- Department of Environmental Science, Policy, and Management, University of California, 130 Mulford Hall, #3114, Berkeley, CA 94720, USA
- Center for Population Biology, University of California, 2320 Storer Hall, Davis, CA 95616, USA
- Department of Evolution and Ecology, University of California, 2320 Storer Hall, Davis, CA 95616, USA
| | - Anjali Gurajapu
- Department of Environmental Science, Policy, and Management, University of California, 130 Mulford Hall, #3114, Berkeley, CA 94720, USA
| | - Albert Qiang
- Department of Environmental Science, Policy, and Management, University of California, 130 Mulford Hall, #3114, Berkeley, CA 94720, USA
| | - Moritz Gerbaulet
- Institute of Organic Chemistry, Technische Universität Braunschweig, Hagenring 30, Braunschweig 38106, Germany
| | - Stefan Schulz
- Institute of Organic Chemistry, Technische Universität Braunschweig, Hagenring 30, Braunschweig 38106, Germany
| | - Neil D. Tsutsui
- Department of Environmental Science, Policy, and Management, University of California, 130 Mulford Hall, #3114, Berkeley, CA 94720, USA
| | - Santiago R. Ramirez
- Center for Population Biology, University of California, 2320 Storer Hall, Davis, CA 95616, USA
- Department of Evolution and Ecology, University of California, 2320 Storer Hall, Davis, CA 95616, USA
| | - Rosemary G. Gillespie
- Department of Environmental Science, Policy, and Management, University of California, 130 Mulford Hall, #3114, Berkeley, CA 94720, USA
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20
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Contreras-Zentella ML, Alatriste-Contreras MG, Suárez-Cuenca JA, Hernández-Muñoz R. Gender effect of glucose, insulin/glucagon ratio, lipids, and nitrogen-metabolites on serum HGF and EGF levels in patients with diabetes type 2. Front Mol Biosci 2024; 11:1362305. [PMID: 38654922 PMCID: PMC11035728 DOI: 10.3389/fmolb.2024.1362305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Accepted: 03/22/2024] [Indexed: 04/26/2024] Open
Abstract
Hepatocyte growth factor (HGF) exhibits potent growth-inducing properties across various tissues, while epidermal growth factor (EGF) acts as a molecular integration point for diverse stimuli. HGF plays a crucial role in hepatic metabolism, tissue repair, and offers protective effects on epithelial and non-epithelial organs, in addition to its involvement in reducing apoptosis and inflammation, underscoring its anti-inflammatory capabilities. The HGF-Met system is instrumental in hepatic metabolism and enhancing insulin sensitivity in animal diabetes models. Similarly, the EGF and its receptor tyrosine kinase family (EGFR) are critical in regulating cell growth, proliferation, migration, and differentiation in both healthy and diseased states, with EGF also contributing to insulin sensitivity. In this observational study, we aimed to identify correlations between serum levels of HGF and EGF, insulin, glucagon, glucose, and primary serum lipids in patients with type 2 diabetes mellitus (DM), taking into account the impact of gender. We noted differences in the management of glucose, insulin, and glucagon between healthy men and women, potentially due to the distinct influences of sexual hormones on the development of type 2 DM. Additionally, metabolites such as glucose, albumin, direct bilirubin, nitrites, and ammonia might influence serum levels of growth factors and hormones. In summary, our results highlight the regulatory role of insulin and glucagon in serum glucose and lipids, along with variations in HGF and EGF levels, which are affected by gender. This link is especially significant in DM, where impaired cell proliferation or repair mechanisms lead to metabolic changes. The gender-based differences in growth factors point to their involvement in the pathophysiology of the disease.
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Affiliation(s)
- Martha Lucinda Contreras-Zentella
- Departamento de Biología Celular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
| | - Martha Gabriela Alatriste-Contreras
- Departamento de Métodos Cuantitativos, División de Estudios Profesionales, Facultad de Economía, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
| | - Juan Antonio Suárez-Cuenca
- Departamento de Medicina Interna, Hospital General “Xoco”, Secretaría de Salud (SS), Mexico City, Mexico
| | - Rolando Hernández-Muñoz
- Departamento de Biología Celular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
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21
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Assobhi B, Ennasry H, Latique S, Kara M, Alaoui Mhamdi M, Bahhou J. Influence of salinity, nitrogen and phosphorus concentrations on the physiological and biochemical characteristics of two Chlorophyceae isolated from Fez freshwater, Morocco. Sci Rep 2024; 14:8259. [PMID: 38589560 PMCID: PMC11001895 DOI: 10.1038/s41598-024-58864-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Accepted: 04/03/2024] [Indexed: 04/10/2024] Open
Abstract
Microalgae are widely exploited for numerous biotechnology applications, including biofuels. In this context, Chlamydomonas debaryana and Chlorococcum sp. were isolated from Fez freshwater (Morocco), and their growth and lipid and carbohydrate production were assessed at different concentrations of NaCl, NaNO3, and K2HPO4. The results indicate a small positive variation in growth parameters linked to nutrient enrichment, with no considerable variation in carbohydrate and lipid levels in both algae. Moreover, a negative variation was recorded at increased salinity and nutrient limitation, accompanied by lipid and carbohydrate accumulation. Chlorococcum sp. showed better adaptation to salt stress below 200 mM NaCl. Furthermore, its growth and biomass productivity were strongly reduced by nitrogen depletion, and its lipid production reached 47.64% DW at 3.52 mM NaNO3. As for Chlamydomonas debaryana, a substantial reduction in growth was induced by nutrient depletion, a maximal carbohydrate level was produced at less than 8.82 mM NaNO3 (40.59% DW). The effect of phosphorus was less significant. However, a concentration of 0.115 mM K2HPO4 increased lipid and carbohydrate content without compromising biomass productivity. The results suggest that growing the two Chlorophyceae under these conditions seems interesting for biofuel production, but the loss of biomass requires a more efficient strategy to maximize lipid and carbohydrate accumulation without loss of productivity.
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Affiliation(s)
- Bouchra Assobhi
- Laboratory of Biotechnology, Conservation and Valorization of Natural Resources, Faculty of Sciences Dhar El Mahraz, Sidi Mohamed Ben Abdellah University, Fez, Morocco.
| | - Houda Ennasry
- Laboratory of Biotechnology, Conservation and Valorization of Natural Resources, Faculty of Sciences Dhar El Mahraz, Sidi Mohamed Ben Abdellah University, Fez, Morocco
| | - Salma Latique
- Laboratory of Biotechnology, Conservation and Valorization of Natural Resources, Faculty of Sciences Dhar El Mahraz, Sidi Mohamed Ben Abdellah University, Fez, Morocco
- Laboratory of Toxicology and Pharmacology, Faculty of Medicine and Pharmacy, Sidi Mohamed Ben Abdellah University, Fez, Morocco
| | - Mohammed Kara
- Laboratory of Biotechnology, Conservation and Valorization of Natural Resources, Faculty of Sciences Dhar El Mahraz, Sidi Mohamed Ben Abdellah University, Fez, Morocco
| | - Mohammed Alaoui Mhamdi
- Laboratory of Biotechnology, Conservation and Valorization of Natural Resources, Faculty of Sciences Dhar El Mahraz, Sidi Mohamed Ben Abdellah University, Fez, Morocco
| | - Jamila Bahhou
- Laboratory of Biotechnology, Conservation and Valorization of Natural Resources, Faculty of Sciences Dhar El Mahraz, Sidi Mohamed Ben Abdellah University, Fez, Morocco
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22
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Liu Y, Wang W, Cui X, Lyu J, Xie Y. Exploring Genetic Associations of 3 Types of Risk Factors With Ischemic Stroke: An Integrated Bioinformatics Study. Stroke 2024. [PMID: 38591222 DOI: 10.1161/strokeaha.123.044424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 03/29/2024] [Indexed: 04/10/2024]
Abstract
BACKGROUND Ischemic stroke (IS) is a major cause of disability and mortality worldwide. Increasing evidence suggests a strong association between blood pressure, blood glucose, circulating lipids, and IS. Nonetheless, the genetic association of these 3 risk factors with IS remains elusive. METHODS We screened genetic instruments related to blood pressure, blood glucose, and circulating lipids and paired them with IS genome-wide association study data to conduct Mendelian randomization analysis. Positive Mendelian randomization findings were then subjected to colocalization analysis. Subsequently, we utilized the Gene Expression Omnibus data set to perform differential expression analysis, aiming to identify differentially expressed associated genes. We determined the importance scores of these differentially expressed associated genes through 4 machine learning models and constructed a nomogram based on these findings. RESULTS The combined results of the Mendelian randomization analysis indicate that blood pressure (systolic blood pressure: odds ratio [OR], 1.02 [95% CI, 1.01-1.02]; diastolic blood pressure: OR, 1.03 [95% CI, 1.03-1.04]) and some circulating lipids (low-density lipoprotein cholesterol: OR, 1.06 [95% CI, 1.01-1.12]; apoA1: OR, 0.95 [95% CI, 0.92-0.98]; apoB: OR, 1.05 [95% CI, 1.01-1.09]; eicosapentaenoic acid: OR, 2.36 [95% CI, 1.41-3.96]) have causal relationships with the risk of IS onset. We identified 73 genes that are linked to blood pressure and circulating lipids in the context of IS, and 16 are differentially expressed associated genes. FURIN, MAN2A2, HDDC3, ALDH2, and TOMM40 were identified as feature genes for constructing the nomogram that provides a quantitative prediction of the risk of IS onset. CONCLUSIONS This study indicates that there are causal links between blood pressure, certain circulating lipids, and the development of IS. The potential mechanisms underlying these causal relationships involve the regulation of lipid metabolism, blood pressure, DNA repair and methylation, cell apoptosis and autophagy, immune inflammation, and neuronal protection, among others.
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Affiliation(s)
- Yi Liu
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing. (Y.L., W.W., X.C., Y.X.)
| | - Weili Wang
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing. (Y.L., W.W., X.C., Y.X.)
| | - Xin Cui
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing. (Y.L., W.W., X.C., Y.X.)
| | - Jian Lyu
- NMPA Key Laboratory for Clinical Research and Evaluation of Traditional Chinese Medicine, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing. (J.L.)
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing. (J.L.)
| | - Yanming Xie
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing. (Y.L., W.W., X.C., Y.X.)
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23
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Ansell TB, Healy M, Coupland CE, Sansom MSP, Siebold C. Mapping structural and dynamic divergence across the MBOAT family. Structure 2024:S0969-2126(24)00096-0. [PMID: 38636523 DOI: 10.1016/j.str.2024.03.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 02/09/2024] [Accepted: 03/22/2024] [Indexed: 04/20/2024]
Abstract
Membrane-bound O-acyltransferases (MBOATs) are membrane-embedded enzymes that catalyze acyl chain transfer to a diverse group of substrates, including lipids, small molecules, and proteins. MBOATs share a conserved structural core, despite wide-ranging functional specificity across both prokaryotes and eukaryotes. The structural basis of catalytic specificity, regulation and interactions with the surrounding environment remain uncertain. Here, we combine comparative molecular dynamics (MD) simulations with bioinformatics to assess molecular and interactional divergence across the family. In simulations, MBOATs differentially distort the bilayer depending on their substrate type. Additionally, we identify lipid binding sites surrounding reactant gates in the surrounding membrane. Complementary bioinformatic analyses reveal a conserved role for re-entrant loop-2 in MBOAT fold stabilization and a key hydrogen bond bridging DGAT1 dimerization. Finally, we predict differences in MBOAT solvation and water gating properties. These data are pertinent to the design of MBOAT-specific inhibitors that encompass dynamic information within cellular mimetic environments.
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Affiliation(s)
- T Bertie Ansell
- Department of Biochemistry, South Parks Road, Oxford OX1 3QU, UK; Division of CryoEM and Bioimaging, SSRL, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA; Department of Biology, Stanford University, Stanford, CA 94305, USA.
| | - Megan Healy
- Department of Biochemistry, South Parks Road, Oxford OX1 3QU, UK
| | - Claire E Coupland
- Division of Structural Biology, Wellcome Centre for Human Genetics, Roosevelt Drive, Oxford OX3 7BN, UK; Molecular Medicine Program, The Hospital for Sick Children, 686 Bay Street, Toronto M5G 0A4, Canada
| | - Mark S P Sansom
- Department of Biochemistry, South Parks Road, Oxford OX1 3QU, UK
| | - Christian Siebold
- Division of Structural Biology, Wellcome Centre for Human Genetics, Roosevelt Drive, Oxford OX3 7BN, UK
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24
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Lodge S, Litton E, Gray N, Ryan M, Millet O, Fear M, Raby E, Currie A, Wood F, Holmes E, Wist J, Nicholson JK. Stratification of Sepsis Patients on Admission into the Intensive Care Unit According to Differential Plasma Metabolic Phenotypes. J Proteome Res 2024; 23:1328-1340. [PMID: 38513133 PMCID: PMC11002934 DOI: 10.1021/acs.jproteome.3c00803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 02/15/2024] [Accepted: 03/07/2024] [Indexed: 03/23/2024]
Abstract
Delayed diagnosis of patients with sepsis or septic shock is associated with increased mortality and morbidity. UPLC-MS and NMR spectroscopy were used to measure panels of lipoproteins, lipids, biogenic amines, amino acids, and tryptophan pathway metabolites in blood plasma samples collected from 152 patients within 48 h of admission into the Intensive Care Unit (ICU) where 62 patients had no sepsis, 71 patients had sepsis, and 19 patients had septic shock. Patients with sepsis or septic shock had higher concentrations of neopterin and lower levels of HDL cholesterol and phospholipid particles in comparison to nonsepsis patients. Septic shock could be differentiated from sepsis patients based on different concentrations of 10 lipids, including significantly lower concentrations of five phosphatidylcholine species, three cholesterol esters, one dihydroceramide, and one phosphatidylethanolamine. The Supramolecular Phospholipid Composite (SPC) was reduced in all ICU patients, while the composite markers of acute phase glycoproteins were increased in the sepsis and septic shock patients within 48 h admission into ICU. We show that the plasma metabolic phenotype obtained within 48 h of ICU admission is diagnostic for the presence of sepsis and that septic shock can be differentiated from sepsis based on the lipid profile.
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Affiliation(s)
- Samantha Lodge
- Australian
National Phenome Center, Health Futures Institute, Murdoch University, Harry Perkins Building, Perth, WA6150, Australia
- Center
for Computational and Systems Medicine, Health Futures Institute, Murdoch University, Harry Perkins Building, Perth, WA 6150, Australia
| | - Edward Litton
- Intensive
Care Unit, Fiona Stanley Hospital, Murdoch, WA 6150, Australia
- Intensive
Care Unit, St John of God Hospital, Subiaco, WA 6009, Australia
- School
of Medicine, University of Western Australia, Crawley, WA 6009, Australia
| | - Nicola Gray
- Australian
National Phenome Center, Health Futures Institute, Murdoch University, Harry Perkins Building, Perth, WA6150, Australia
- Center
for Computational and Systems Medicine, Health Futures Institute, Murdoch University, Harry Perkins Building, Perth, WA 6150, Australia
| | - Monique Ryan
- Australian
National Phenome Center, Health Futures Institute, Murdoch University, Harry Perkins Building, Perth, WA6150, Australia
- Center
for Computational and Systems Medicine, Health Futures Institute, Murdoch University, Harry Perkins Building, Perth, WA 6150, Australia
| | - Oscar Millet
- Precision
Medicine and Metabolism Laboratory, CIC
bioGUNE, Parque Tecnológico
de Bizkaia, Bld. 800, Derio 48160, Spain
| | - Mark Fear
- Burn
Injury Research Unit, School of Biomedical Sciences, University of Western Australia, Perth, WA 6009, Australia
- Fiona
Wood Foundation, Perth, WA 6150, Australia
| | - Edward Raby
- Department
of Infectious Diseases, Fiona Stanley Hospital, Murdoch, WA 6150, Australia
| | - Andrew Currie
- School
of Medical, Molecular & Forensic Sciences, Murdoch University, Perth, WA 6150, Australia
- Centre
for Molecular Medicine & Innovative Therapeutics, Murdoch University, Perth, WA 6150, Australia
- Wesfarmers
Centre for Vaccines and Infectious Diseases, Telethon Kids Institute, University of Western Australia, Perth, WA 6009, Australia
| | - Fiona Wood
- Burn
Injury Research Unit, School of Biomedical Sciences, University of Western Australia, Perth, WA 6009, Australia
- Fiona
Wood Foundation, Perth, WA 6150, Australia
- Burns
service of Western Australia, WA Department
of Health, Murdoch, WA 6150, Australia
| | - Elaine Holmes
- Center
for Computational and Systems Medicine, Health Futures Institute, Murdoch University, Harry Perkins Building, Perth, WA 6150, Australia
- Institute
of Global Health Innovation, Faculty of Medicine, Imperial College London, Level 1, Faculty Building, South Kensington Campus, London SW7 2NA, U.K.
| | - Julien Wist
- Australian
National Phenome Center, Health Futures Institute, Murdoch University, Harry Perkins Building, Perth, WA6150, Australia
- Center
for Computational and Systems Medicine, Health Futures Institute, Murdoch University, Harry Perkins Building, Perth, WA 6150, Australia
- Chemistry
Department, Universidad del Valle, Cali 76001, Colombia
- Department of Metabolism, Digestion and
Reproduction, Faculty of Medicine, Imperial
College London, Sir Alexander
Fleming Building, South Kensington, London SW7 2AZ, U.K.
| | - Jeremy K. Nicholson
- Australian
National Phenome Center, Health Futures Institute, Murdoch University, Harry Perkins Building, Perth, WA6150, Australia
- Department of Metabolism, Digestion and
Reproduction, Faculty of Medicine, Imperial
College London, Sir Alexander
Fleming Building, South Kensington, London SW7 2AZ, U.K.
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25
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Ruscica M, Macchi C, Gandini S, Macis D, Guerrieri-Gonzaga A, Aristarco V, Serrano D, Lazzeroni M, Rizzuto AS, Gaeta A, Corsini A, Gulisano M, Johansson H, Bonanni B. Prognostic Value of PCSK9 Levels in Premenopausal Women at Risk of Breast Cancer-Evidence from a 17-Year Follow-Up Study. Cancers (Basel) 2024; 16:1411. [PMID: 38611089 PMCID: PMC11011028 DOI: 10.3390/cancers16071411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 03/28/2024] [Accepted: 04/03/2024] [Indexed: 04/14/2024] Open
Abstract
BACKGROUND AND AIM The involvement of cholesterol in cancer development remains a topic of debate, and its association with breast cancer has yet to be consistently demonstrated. Considering that circulating cholesterol levels depend on several concomitant processes, we tested the liability of plasma levels of proprotein convertase subtilisin/kexin type 9 (PCSK9), one of the key regulators of cholesterol levels, as a prognostic biomarker in the context of breast neoplastic events. METHODS Within a prospective randomized breast cancer prevention trial we measured baseline plasma levels of PCSK9. A total of 235 at-risk premenopausal women were randomized and followed up for 17 years. Participants enrolled in this placebo-controlled, phase II, double-blind trial were randomly assigned to receive either tamoxifen 5 mg/d or fenretinide 200 mg/d, both agents, or placebo for 2 years. The associations with breast cancer events were evaluated through competing risk and Cox regression survival models, adjusted for randomization strata (5-year Gail risk ≥ 1.3% vs. intraepithelial neoplasia or small invasive breast cancer of favorable prognosis), age, and treatment allocation. PCSK9 associations with biomarkers linked to breast cancer risk were assessed on blood samples collected at baseline. RESULTS The plasmatic PCSK9 median and interquartile range were 207 ng/mL and 170-252 ng/mL, respectively. Over a median follow-up period of 17 years and 89 breast neoplastic events, disease-free survival curves showed a hazard ratio of 1.002 (95% CI: 0.999-1.005, p = 0.22) for women with PCSK9 plasma levels ≥ 207 ng/mL compared to women with levels below 207 ng/mL. No differences between randomization strata were observed. We found a negative correlation between PCSK9 and estradiol (r = -0.305), maintained even after partial adjustment for BMI and age (r = -0.287). Cholesterol (r = 0.266), LDL-C (r = 0.207), non-HDL-C (r = 0.246), remnant cholesterol (r = 0.233), and triglycerides (r = 0.233) also correlated with PCSK9. CONCLUSIONS In premenopausal women at risk of early-stage breast cancer, PCSK9 did not appear to have a role as a prognostic biomarker of breast neoplastic events. Larger studies are warranted investigating patients in different settings.
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Affiliation(s)
- Massimiliano Ruscica
- Department of Pharmacological and Biomolecular Sciences “Rodolfo Paoletti”, Università degli Studi di Milano, 20122 Milan, Italy; (M.R.); (C.M.); (A.C.)
- Department of Cardio-Thoracic-Vascular Diseases, Foundation IRCCS Cà Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | - Chiara Macchi
- Department of Pharmacological and Biomolecular Sciences “Rodolfo Paoletti”, Università degli Studi di Milano, 20122 Milan, Italy; (M.R.); (C.M.); (A.C.)
| | - Sara Gandini
- Department of Experimental Oncology, IEO, European Institute of Oncology IRCCS, 20141 Milan, Italy; (S.G.); (A.G.)
| | - Debora Macis
- Division of Cancer Prevention and Genetics, IEO, European Institute of Oncology IRCCS, 20141 Milan, Italy; (D.M.); (A.G.-G.); (V.A.); (D.S.); (M.L.); (B.B.)
| | - Aliana Guerrieri-Gonzaga
- Division of Cancer Prevention and Genetics, IEO, European Institute of Oncology IRCCS, 20141 Milan, Italy; (D.M.); (A.G.-G.); (V.A.); (D.S.); (M.L.); (B.B.)
| | - Valentina Aristarco
- Division of Cancer Prevention and Genetics, IEO, European Institute of Oncology IRCCS, 20141 Milan, Italy; (D.M.); (A.G.-G.); (V.A.); (D.S.); (M.L.); (B.B.)
| | - Davide Serrano
- Division of Cancer Prevention and Genetics, IEO, European Institute of Oncology IRCCS, 20141 Milan, Italy; (D.M.); (A.G.-G.); (V.A.); (D.S.); (M.L.); (B.B.)
| | - Matteo Lazzeroni
- Division of Cancer Prevention and Genetics, IEO, European Institute of Oncology IRCCS, 20141 Milan, Italy; (D.M.); (A.G.-G.); (V.A.); (D.S.); (M.L.); (B.B.)
| | | | - Aurora Gaeta
- Department of Experimental Oncology, IEO, European Institute of Oncology IRCCS, 20141 Milan, Italy; (S.G.); (A.G.)
- Department of Statistics and Quantitative Methods, University of Milan-Bicocca, 20126 Milan, Italy
| | - Alberto Corsini
- Department of Pharmacological and Biomolecular Sciences “Rodolfo Paoletti”, Università degli Studi di Milano, 20122 Milan, Italy; (M.R.); (C.M.); (A.C.)
| | | | - Harriet Johansson
- Division of Cancer Prevention and Genetics, IEO, European Institute of Oncology IRCCS, 20141 Milan, Italy; (D.M.); (A.G.-G.); (V.A.); (D.S.); (M.L.); (B.B.)
| | - Bernardo Bonanni
- Division of Cancer Prevention and Genetics, IEO, European Institute of Oncology IRCCS, 20141 Milan, Italy; (D.M.); (A.G.-G.); (V.A.); (D.S.); (M.L.); (B.B.)
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26
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Stojek K, Bobrowska-Korczak B, Kusińska B, Czerwonka M, Decruyenaere J, Decock L, Klama J, Mueller S, Ponette Q, Scherer-Lorenzen M, Verheyen K, Jaroszewicz B. Factors affecting composition of fatty acids in wild-growing forest mushrooms. Mycologia 2024:1-11. [PMID: 38573224 DOI: 10.1080/00275514.2024.2325045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Accepted: 02/20/2024] [Indexed: 04/05/2024]
Abstract
The importance of mushrooms as a food source is continually increasing. To investigate how environmental factors affect the nutritional value of mushrooms, we harvested them in eastern Poland, south-central Germany, and northwestern Belgium in plots with similar environmental conditions but varying in tree species composition and richness. We used gas chromatography-mass spectrometry (GC-MS) to analyze the fatty acid (FA) content of the mushrooms. Fungal species identity explained the largest part (40%) of the total variation in FA concentration and composition. Environmental factors accounted for 1-12% of variation. The concentration of FA, especially saturated fatty acids, decreased with increasing understory cover and increasing nitrogen concentration in the topsoil. The effect of tree species richness or tree species identity was negligible. Our results suggest that the nutritional value of mushrooms depends mainly on the species identity of fungi, but that their FA content is slightly higher in forests with less undergrowth and in nitrogen-poor soils.
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Affiliation(s)
- Katarzyna Stojek
- Faculty of Biology, University of Warsaw, Białowieża Geobotanical Station, Sportowa 19, Białowieża 17230, Poland
| | | | - Barbara Kusińska
- Faculty of Biology, University of Warsaw, Białowieża Geobotanical Station, Sportowa 19, Białowieża 17230, Poland
| | - Małgorzata Czerwonka
- Faculty of Pharmacy, Medical University of Warsaw, Stefana Banacha 1, Warszawa 02097, Poland
- School of Health and Medical Sciences, University of Economics and Human Sciences in Warsaw, Okopowa 59, Warsaw 01043, Poland
| | - Julien Decruyenaere
- Earth and Life Institute, Université catholique de Louvain, Croix du Sud 2 box L7.05.24, Louvain-la-Neuve 1348, Belgium
| | - Lucas Decock
- Forest & Nature Lab, Department of Environment, Faculty of Bioscience Engineering, Ghent University, Geraardsbergsesteenweg 267, Melle Gontrode 9090, Belgium
| | - Johanna Klama
- Faculty of Biology, University of Freiburg, Geobotany. Schänzelstr. 1, Freiburg 79104, Germany
| | - Sandra Mueller
- Faculty of Biology, University of Freiburg, Geobotany. Schänzelstr. 1, Freiburg 79104, Germany
| | - Quentin Ponette
- Earth and Life Institute, Université catholique de Louvain, Croix du Sud 2 box L7.05.24, Louvain-la-Neuve 1348, Belgium
| | | | - Kris Verheyen
- Forest & Nature Lab, Department of Environment, Faculty of Bioscience Engineering, Ghent University, Geraardsbergsesteenweg 267, Melle Gontrode 9090, Belgium
| | - Bogdan Jaroszewicz
- Faculty of Biology, University of Warsaw, Białowieża Geobotanical Station, Sportowa 19, Białowieża 17230, Poland
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27
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Kalinichenko L, Kornhuber J, Sinning S, Haase J, Müller CP. Serotonin Signaling through Lipid Membranes. ACS Chem Neurosci 2024; 15:1298-1320. [PMID: 38499042 PMCID: PMC10995955 DOI: 10.1021/acschemneuro.3c00823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 02/22/2024] [Accepted: 02/27/2024] [Indexed: 03/20/2024] Open
Abstract
Serotonin (5-HT) is a vital modulatory neurotransmitter responsible for regulating most behaviors in the brain. An inefficient 5-HT synaptic function is often linked to various mental disorders. Primarily, membrane proteins controlling the expression and activity of 5-HT synthesis, storage, release, receptor activation, and inactivation are critical to 5-HT signaling in synaptic and extra-synaptic sites. Moreover, these signals represent information transmission across membranes. Although the lipid membrane environment is often viewed as fairly stable, emerging research suggests significant functional lipid-protein interactions with many synaptic 5-HT proteins. These protein-lipid interactions extend to almost all the primary lipid classes that form the plasma membrane. Collectively, these lipid classes and lipid-protein interactions affect 5-HT synaptic efficacy at the synapse. The highly dynamic lipid composition of synaptic membranes suggests that these lipids and their interactions with proteins may contribute to the plasticity of the 5-HT synapse. Therefore, this broader protein-lipid model of the 5-HT synapse necessitates a reconsideration of 5-HT's role in various associated mental disorders.
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Affiliation(s)
- Liubov
S. Kalinichenko
- Department
of Psychiatry and Psychotherapy, University
Clinic, Friedrich-Alexander-University of Erlangen-Nürnberg, Schwabachanlage 6, 91054, Erlangen, Germany
| | - Johannes Kornhuber
- Department
of Psychiatry and Psychotherapy, University
Clinic, Friedrich-Alexander-University of Erlangen-Nürnberg, Schwabachanlage 6, 91054, Erlangen, Germany
| | - Steffen Sinning
- Department
of Forensic Medicine, Aarhus University, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
| | - Jana Haase
- School
of Biomolecular and Biomedical Science, UCD Conway Institute, University College Dublin, Dublin, Ireland
| | - Christian P. Müller
- Department
of Psychiatry and Psychotherapy, University
Clinic, Friedrich-Alexander-University of Erlangen-Nürnberg, Schwabachanlage 6, 91054, Erlangen, Germany
- Institute
of Psychopharmacology, Central Institute of Mental Health, Medical
Faculty Mannheim, Heidelberg University, 69047, Mannheim, Germany
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Miklavcic JJ, Paterson N, Hahn-Holbrook J, Glynn L. Impact of FADS genotype on polyunsaturated fatty acid content in human milk extracellular vesicles: A genetic association study. JPEN J Parenter Enteral Nutr 2024. [PMID: 38566550 DOI: 10.1002/jpen.2628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 03/12/2024] [Accepted: 03/15/2024] [Indexed: 04/04/2024]
Abstract
BACKGROUND Extracellular vesicles in human milk are critical in supporting newborn growth and development. Bioavailability of dietary extracellular vesicles may depend on the composition of membrane lipids. Single-nucleotide polymorphisms (SNPs) in the fatty acid desaturase gene cluster impact the content of long-chain polyunsaturated fatty acids in human milk phospholipids. This study investigated the relation between variation in FADS1 and FADS2 with the content of polyunsaturated fatty acids in extracellular vesicles from human milk. METHODS Milk was obtained from a cohort of mothers (N = 70) at 2-4 weeks of lactation. SNPs in the FADS gene locus were determined using pyrosequencing for rs174546 in FADS1 and rs174575 in FADS2. Quantitative lipidomic analysis of polyunsaturated fatty acids in human milk and extracellular vesicles from human milk was completed by gas chromatography-mass spectrometry. RESULTS The rs174546 and rs174575 genotypes were independent predictors of the arachidonic acid content in extracellular vesicles. The rs174546 genotype also predicted eicosapentaenoic acid and docosahexaenoic acid in extracellular vesicles. The reduced content of long-chain polyunsaturated fatty acids in extracellular vesicles in human milk may be due to lower fatty acid desaturase activity in mothers who are carriers of the A allele in rs174546 or the G allele in rs174575. CONCLUSION The polyunsaturated fatty acid composition of milk extracellular vesicles is predicted by the FADS genotype. These findings yield novel insights regarding extracellular vesicle content and composition that can inform the design of future research to explore how lipid metabolites impact the bioavailability of human milk extracellular vesicles.
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Affiliation(s)
- John J Miklavcic
- Schmid College of Science and Technology, Chapman University, Orange, California, USA
- School of Pharmacy, Chapman University, Irvine, California, USA
| | - Natalie Paterson
- Schmid College of Science and Technology, Chapman University, Orange, California, USA
| | - Jennifer Hahn-Holbrook
- Department of Psychological Services, University of California, Merced, Merced, California, USA
| | - Laura Glynn
- Crean College of Science, Chapman University, Orange, California, USA
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Pabst G, Keller S. Exploring membrane asymmetry and its effects on membrane proteins. Trends Biochem Sci 2024; 49:333-345. [PMID: 38355393 DOI: 10.1016/j.tibs.2024.01.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 01/08/2024] [Accepted: 01/19/2024] [Indexed: 02/16/2024]
Abstract
Plasma membranes utilize free energy to maintain highly asymmetric, non-equilibrium distributions of lipids and proteins between their two leaflets. In this review we discuss recent progress in quantitative research enabled by using compositionally controlled asymmetric model membranes. Both experimental and computational studies have shed light on the nuanced mechanisms that govern the structural and dynamic coupling between compositionally distinct bilayer leaflets. This coupling can increase the membrane bending rigidity and induce order - or lipid domains - across the membrane. Furthermore, emerging evidence indicates that integral membrane proteins not only respond to asymmetric lipid distributions but also exhibit intriguing asymmetric properties themselves. We propose strategies to advance experimental research, aiming for a deeper, quantitative understanding of membrane asymmetry, which carries profound implications for cellular physiology.
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Affiliation(s)
- Georg Pabst
- Biophysics, Institute of Molecular Bioscience (IMB), NAWI Graz, University of Graz, Graz 8010, Austria; BioTechMed-Graz, Graz, Austria; Field of Excellence BioHealth, University of Graz, Graz, Austria.
| | - Sandro Keller
- Biophysics, Institute of Molecular Bioscience (IMB), NAWI Graz, University of Graz, Graz 8010, Austria; BioTechMed-Graz, Graz, Austria; Field of Excellence BioHealth, University of Graz, Graz, Austria
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30
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Yang C, Lin ZI, Zhang X, Xu Z, Xu G, Wang YM, Tsai TH, Cheng PW, Law WC, Yong KT, Chen CK. Recent Advances in Engineering Carriers for siRNA Delivery. Macromol Biosci 2024; 24:e2300362. [PMID: 38150293 DOI: 10.1002/mabi.202300362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 11/29/2023] [Indexed: 12/28/2023]
Abstract
RNA interference (RNAi) technology has been a promising treatment strategy for combating intractable diseases. However, the applications of RNAi in clinical are hampered by extracellular and intracellular barriers. To overcome these barriers, various siRNA delivery systems have been developed in the past two decades. The first approved RNAi therapeutic, Patisiran (ONPATTRO) using lipids as the carrier, for the treatment of amyloidosis is one of the most important milestones. This has greatly encouraged researchers to work on creating new functional siRNA carriers. In this review, the recent advances in siRNA carriers consisting of lipids, polymers, and polymer-modified inorganic particles for cancer therapy are summarized. Representative examples are presented to show the structural design of the carriers in order to overcome the delivery hurdles associated with RNAi therapies. Finally, the existing challenges and future perspective for developing RNAi as a clinical modality will be discussed and proposed. It is believed that the addressed contributions in this review will promote the development of siRNA delivery systems for future clinical applications.
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Affiliation(s)
- Chengbin Yang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Zheng-Ian Lin
- Polymeric Biomaterials Laboratory, Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
| | - Xinmeng Zhang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Zhourui Xu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Gaixia Xu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Yu-Min Wang
- Polymeric Biomaterials Laboratory, Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
| | - Tzu-Hsien Tsai
- Division of Cardiology and Department of Internal Medicine, Ditmanson Medical Foundation Chiayi Christian Hospital, Chiayi, 60002, Taiwan
| | - Pei-Wen Cheng
- Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung, 81362, Taiwan
- Department of Biomedical Sciences, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
| | - Wing-Cheung Law
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, 999077, P. R. China
| | - Ken-Tye Yong
- School of Biomedical Engineering, The University of Sydney, Sydney, New South Wales, 2006, Australia
| | - Chih-Kuang Chen
- Polymeric Biomaterials Laboratory, Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
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Bikov A, Bailly S, Testelmans D, Fanfulla F, Pataka A, Bouloukaki I, Hein H, Dogas Z, Basoglu OK, Staats R, Parati G, Lombardi C, Grote L, Mihaicuta S. The relationship between periodic limb movement during sleep and dyslipidaemia in patients with obstructive sleep apnea. J Sleep Res 2024; 33:e14012. [PMID: 37596874 DOI: 10.1111/jsr.14012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 07/16/2023] [Accepted: 07/18/2023] [Indexed: 08/20/2023]
Abstract
Periodic limb movements during sleep and obstructive sleep apnea are both associated with increased sympathetic tone, and have been proposed as risk factors for heart diseases and, in particular, cardiovascular disease. As sympathetic system activation may lead to dyslipidaemia, periodic limb movements during sleep could be an additional risk factor for cardiovascular disease in patients with obstructive sleep apnea. The aim of the study was to determine whether the presence of periodic limb movements during sleep affects serum lipid levels in obstructive sleep apnea. Total cholesterol, low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, non- high-density lipoprotein cholesterol and triglyceride levels were investigated in 4138 patients with obstructive sleep apnea in the European Sleep Apnea Database (ESADA) cohort, divided into those with periodic limb movements during sleep index ≥ 15 per hr (n = 628) and controls (n = 3510). ANCOVA adjusted for age, sex, body mass index, apnea-hypopnea index, alcohol intake, smoking status, diabetes, insomnia and study site was used to assess differences in lipids between periodic limb movements during sleep and controls. Patients with periodic limb movements during sleep (24% female, 54.4 ± 12.1 years, body mass index 31.9 ± 5.8 kg m-2 , apnea-hypopnea index 36.7 ± 25.4 per hr) had higher triglyceride (1.81 ± 1.04 versus 1.69 ± 0.90 mmol L-1 , p = 0.002) and lower high-density lipoprotein cholesterol (1.19 ± 0.34 versus 1.24 ± 0.37 mmol L-1 , p = 0.002) levels, whilst there was no difference in either total cholesterol (4.98 ± 1.10 versus 4.94 ± 1.07 mmol L-1 ), low-density lipoprotein cholesterol (3.04 ± 0.96 versus 2.98 ± 0.98 mmol L-1 ) or non- high-density lipoprotein cholesterol (3.78 ± 1.10 versus 3.70 ± 1.05 mmol L-1 ) concentrations (all p > 0.05). The results remained unchanged after most sensitivity analyses. Patients with obstructive sleep apnea with periodic limb movements during sleep had more prevalent cardiovascular disease (11% versus 6%, p < 0.01). Periodic limb movements during sleep in obstructive sleep apnea is associated with dyslipidaemia independently of important confounders. Our results highlight periodic limb movements during sleep as an additional risk factor for cardiovascular disease in obstructive sleep apnea.
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Affiliation(s)
- Andras Bikov
- Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
- Division of Infection, Immunity & Respiratory Medicine, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK
| | - Sebastien Bailly
- Grenoble Alpes University, Inserm, CHU Grenoble Alpes, Grenoble, France
| | - Dries Testelmans
- Department of Pneumology, University Hospitals Leuven, Leuven, Belgium
- Department of Chronic Diseases and Metabolism, Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), Leuven, Belgium
| | - Francesco Fanfulla
- Sleep Medicine Unit - Istituti Clinici Scientifici Maugeri - Istituto Scientifico di Pavia e Montescano IRCCS, Pavia, Italy
| | - Athanasia Pataka
- Respiratory Failure Unit, School of Medicine, G Papanikolaou Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Izolde Bouloukaki
- Sleep Disorders Center, Department of Respiratory Medicine, School of Medicine, University of Crete, Heraklion, Greece
| | - Holger Hein
- Private practice for Sleep Medicine and Sleep Disorders Center, Reinbek, Germany
| | - Zoran Dogas
- Sleep Medicine Center, Department of Neuroscience, University of Split School of Medicine, Split, Croatia
| | - Ozen K Basoglu
- Department of Respiratory Medicine, Faculty of Medicine, Ege University, Izmir, Turkey
| | - Richard Staats
- Thorax Department, Centro Hospitalar Universitario Lisboa Norte, Lisbon, Portugal
- Instituto de Saúde Ambiental - ISAMB; Faculty of Medicine, University of Lisbon, Lisbon, Portugal
| | - Gianfranco Parati
- Sleep Center-Department of Cardiology, IRCCS, Istituto Auxologico Italiano, San Luca Hospital, Milan, Italy
- Department of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy
| | - Carolina Lombardi
- Sleep Center-Department of Cardiology, IRCCS, Istituto Auxologico Italiano, San Luca Hospital, Milan, Italy
- Department of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy
| | - Ludger Grote
- Center for Sleep and Wake Disorders, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Pulmonary Medicine, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Stefan Mihaicuta
- Center for Research and Innovation in Precision Medicine of Respiratory Diseases, Department of Pulmonology, "Victor Babes" University of Medicine and Pharmacy Timisoara, Timisoara, Romania
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Habib L, Nassif LA, Abboud M, Michael‐Jubeli R, Tfayli A, Lteif R. Noninvasive evaluation of the skin barrier in reconstructed human epidermis using speckle analysis: Correlation with Raman microspectroscopy. Skin Res Technol 2024; 30:e13708. [PMID: 38634247 PMCID: PMC11024505 DOI: 10.1111/srt.13708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 04/02/2024] [Indexed: 04/19/2024]
Abstract
BACKGROUND Reconstructed epidermis models, obtained from 3D keratinocytes culture, have gained significant prominence as prototypes for safety and efficacy testing in skin research. To effectively evaluate these models, it is essential to perform molecular and functional characterization. The skin's barrier function is one of the essential aspects of the epidermis that needs to be assessed. A noninvasive method is thus required for the evaluation of the skin barrier in these models. With this perspective, the aim of this feasibility study is to apply the speckle technique for the assessment of the skin barrier in the Reconstructed Human Epidermis (RHE). MATERIALS AND METHODS Speckle analysis as well as Raman microspectroscopy were performed on RHE samples at two maturation days, D17 and D20. RESULTS Between D17 and D20, our study showed an increase in various Raman parameters, including stratum corneum percentage, lateral lipid packing, lipid-to-protein ratio, and protein secondary structure. Furthermore, the degree of light polarization and the speckle grain size also increased over this period. CONCLUSION The speckle technique proved to be effective for evaluating the skin barrier in Reconstructed Human Epidermis (RHE) models. Comparison with Raman validates this approach and provides comprehensive molecular and functional characterization of reconstructive skin models.
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Affiliation(s)
- Léa Habib
- Laboratoire d’étude cinétique en milieu hétérogène (LECH)Faculté des SciencesUniversité Saint JosephBeirutLebanon
- Unité Universitaire Interdisciplinaire Lip(Sys): Lipides, Systèmes analytiques et biologiques, Faculté de pharmacieUniversité Paris‐SaclayOrsayFrance
| | - Léa Abi Nassif
- Physics Department, UR TVA, Faculté des sciencesUniversité Saint JosephBeirutLebanon
| | - Marie Abboud
- Physics Department, UR TVA, Faculté des sciencesUniversité Saint JosephBeirutLebanon
| | - Rime Michael‐Jubeli
- Unité Universitaire Interdisciplinaire Lip(Sys): Lipides, Systèmes analytiques et biologiques, Faculté de pharmacieUniversité Paris‐SaclayOrsayFrance
| | - Ali Tfayli
- Unité Universitaire Interdisciplinaire Lip(Sys): Lipides, Systèmes analytiques et biologiques, Faculté de pharmacieUniversité Paris‐SaclayOrsayFrance
| | - Roger Lteif
- Laboratoire d’étude cinétique en milieu hétérogène (LECH)Faculté des SciencesUniversité Saint JosephBeirutLebanon
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Couëdelo L, Lennon S, Abrous H, Chamekh I, Bouju C, Griffon H, Vaysse C, Larvol L, Breton G. In Vivo Absorption and Lymphatic Bioavailability of Docosahexaenoic Acid from Microalgal Oil According to Its Physical and Chemical Form of Vectorization. Nutrients 2024; 16:1014. [PMID: 38613047 PMCID: PMC11013230 DOI: 10.3390/nu16071014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 03/20/2024] [Accepted: 03/22/2024] [Indexed: 04/14/2024] Open
Abstract
Docosahexaenoic acid (DHA) is an essential fatty acid (FA) with proven pro-health effects, but improving its bioavailability is becoming a public health issue. The bioavailability of DHA from microalgal (A) oil has been comprehensively assessed, particularly in terms of the molecular structuring capabilities offered by A-oil. Here, we explored the impact of five DHA-rich formulas differing in terms of (i) molecular structure, i.e., ethyl ester (EE), monoglyceride (MG), or triglyceride (TG), and (ii) supramolecular form, i.e., emulsified TG or TG + phospholipids (PL blend) on the lymphatic kinetics of DHA absorption and the lipid characteristics of the resulting lipoproteins. We demonstrated in rats that the conventional A-DHA TG structure afforded more effective DHA absorption than the EE structure (+23%). Furthermore, the A-DHA MG and A-DHA emulsions were the better DHA vectors (AUC: 89% and +42%, respectively) due to improved lipolysis. The A-DHA MG and A-DHA emulsion presented the richest DHA content in TG (+40%) and PL (+50%) of lymphatic chylomicrons, which could affect the metabolic fate of DHA. We concluded that structuring A-DHA in TG or EE form would better serve for tissue and hepatic metabolism whereas A-DHA in MG and emulsion form could better target nerve tissues.
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Affiliation(s)
- Leslie Couëdelo
- ITERG, Nutrition Life Sciences, 33610 Bordeaux, France; (H.A.); (I.C.); (C.B.); (H.G.); (C.V.)
| | | | - Hélène Abrous
- ITERG, Nutrition Life Sciences, 33610 Bordeaux, France; (H.A.); (I.C.); (C.B.); (H.G.); (C.V.)
| | - Ikram Chamekh
- ITERG, Nutrition Life Sciences, 33610 Bordeaux, France; (H.A.); (I.C.); (C.B.); (H.G.); (C.V.)
| | - Corentin Bouju
- ITERG, Nutrition Life Sciences, 33610 Bordeaux, France; (H.A.); (I.C.); (C.B.); (H.G.); (C.V.)
| | - Hugues Griffon
- ITERG, Nutrition Life Sciences, 33610 Bordeaux, France; (H.A.); (I.C.); (C.B.); (H.G.); (C.V.)
| | - Carole Vaysse
- ITERG, Nutrition Life Sciences, 33610 Bordeaux, France; (H.A.); (I.C.); (C.B.); (H.G.); (C.V.)
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Zabielski P, Imierska M, Roszczyc-Owsiejczuk K, Kuźmicki M, Rogalski P, Daniluk J, Błachnio-Zabielska AU. The Role of Acyl-CoA Synthetase 1 in Bioactive Lipid Accumulation and the Development of Hepatic Insulin Resistance. Nutrients 2024; 16:1003. [PMID: 38613036 PMCID: PMC11013895 DOI: 10.3390/nu16071003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 03/25/2024] [Accepted: 03/27/2024] [Indexed: 04/14/2024] Open
Abstract
The liver plays a crucial role in glucose metabolism. Obesity and a diet rich in fats (HFD) contribute to the accumulation of intracellular lipids. The aim of the study was to explore the involvement of acyl-CoA synthetase 1 (ACSL1) in bioactive lipid accumulation and the induction of liver insulin resistance (InsR) in animals fed an HFD. The experiments were performed on male C57BL/6 mice divided into the following experimental groups: 1. Animals fed a control diet; 2. animals fed HFD; and 3. HFD-fed animals with the hepatic ACSL1 gene silenced through a hydrodynamic gene delivery technique. Long-chain acyl-CoAs, sphingolipids, and diacylglycerols were measured by LC/MS/MS. Glycogen was measured by means of a commercially available kit. The protein expression and phosphorylation state of the insulin pathway was estimated by Western blot. HFD-fed mice developed InsR, manifested as an increase in fasting blood glucose levels (202.5 mg/dL vs. 130.5 mg/dL in the control group) and inhibition of the insulin pathway, which resulted in an increase in the rate of gluconeogenesis (0.420 vs. 0.208 in the control group) and a decrease in the hepatic glycogen content (1.17 μg/mg vs. 2.32 μg/mg in the control group). Hepatic ACSL1 silencing resulted in decreased lipid content and improved insulin sensitivity, accounting for the decreased rate of gluconeogenesis (0.348 vs. 0.420 in HFD(+/+)) and the increased glycogen content (4.3 μg/mg vs. 1.17 μg/mg in HFD(+/+)). The elevation of gluconeogenesis and the decrease in glycogenesis in the hepatic tissue of HFD-fed mice resulted from cellular lipid accumulation. Inhibition of lipid synthesis through silencing ACSL1 alleviated HFD-induced hepatic InsR.
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Affiliation(s)
- Piotr Zabielski
- Medical Biology Department, Medical University of Bialystok, 15-222 Bialystok, Poland;
| | - Monika Imierska
- Hygiene, Epidemiology and Metabolic Disorders Department, Medical University of Bialystok, Mickiewicza 2c, 15-222 Bialystok, Poland; (M.I.); (K.R.-O.)
| | - Kamila Roszczyc-Owsiejczuk
- Hygiene, Epidemiology and Metabolic Disorders Department, Medical University of Bialystok, Mickiewicza 2c, 15-222 Bialystok, Poland; (M.I.); (K.R.-O.)
| | - Mariusz Kuźmicki
- Gynecology and Gynecological Oncology Department, Medical University of Bialystok, 15-276 Bialystok, Poland;
| | - Paweł Rogalski
- Gastroenterology and Internal Medicine Department, Medical University of Bialystok, 15-276 Bialystok, Poland; (P.R.); (J.D.)
| | - Jarosław Daniluk
- Gastroenterology and Internal Medicine Department, Medical University of Bialystok, 15-276 Bialystok, Poland; (P.R.); (J.D.)
| | - Agnieszka U. Błachnio-Zabielska
- Hygiene, Epidemiology and Metabolic Disorders Department, Medical University of Bialystok, Mickiewicza 2c, 15-222 Bialystok, Poland; (M.I.); (K.R.-O.)
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Zhang YX, Zhang YD, Shi YP. Novel Small Molecule Matrix Screening for Simultaneous MALDI Mass Spectrometry Imaging of Multiple Lipids and Phytohormones. J Agric Food Chem 2024; 72:6762-6771. [PMID: 38478706 DOI: 10.1021/acs.jafc.4c00309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
Most of the traditional matrices cannot simultaneously image multiple lipids and phytohormones, so screening and discovery of novel matrices stand as essential approaches for broadening the application scope of matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI). In this work, 12 organic small molecule compounds were comprehensively screened and investigated as potential MALDI matrices for simultaneous imaging analysis of various lipids and phytohormones. In the positive ionization mode, p-nitroaniline, m-nitroaniline, and 2-aminoterephthalic acid displayed good performance for the highly sensitive detection of lysophosphatidylcholines (LPCs), phosphatidylcholines (PCs), and triacylglycerols (TGs). Furthermore, p-nitroaniline possessed excellent characteristics of strong ultraviolet absorption and homogeneous cocrystallization, making it a desirable matrix for MALDI-MSI analysis of eight plant hormones. Compared with conventional matrices (2,5-dihydroxybenzoic acid (DHB), α-cyano-4-hydroxycinnamic acid (CHCA), and 9-aminoacridine (9-AA), the use of p-nitroaniline resulted in higher ionization efficiency, superior sensitivity, and clearer imaging images in dual polarity mode. Our research offers valuable guidance and new ideas for future endeavors in matrix screening.
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Affiliation(s)
- Yan-Xia Zhang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Yi-Da Zhang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
| | - Yan-Ping Shi
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
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Kasprzak-Drozd K, Niziński P, Kasprzak P, Kondracka A, Oniszczuk T, Rusinek A, Oniszczuk A. Does Resveratrol Improve Metabolic Dysfunction-Associated Steatotic Liver Disease (MASLD)? Int J Mol Sci 2024; 25:3746. [PMID: 38612556 PMCID: PMC11012111 DOI: 10.3390/ijms25073746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 03/22/2024] [Accepted: 03/23/2024] [Indexed: 04/14/2024] Open
Abstract
Metabolic dysfunction-associated steatotic liver disease (MASLD) is influenced by a variety of factors, including environmental and genetic factors. The most significant outcome is the alteration of free fatty acid and triglyceride metabolism. Lipotoxicity, impaired autophagy, chronic inflammation, and oxidative stress, as well as coexisting insulin resistance, obesity, and changes in the composition of gut microbiota, are also considered crucial factors in the pathogenesis of MASLD. Resveratrol is a polyphenolic compound that belongs to the stilbene subgroup. This review summarises the available information on the therapeutic effects of resveratrol against MASLD. Resveratrol has demonstrated promising antisteatotic, antioxidant, and anti-inflammatory activities in liver cells in in vitro and animal studies. Resveratrol has been associated with inhibiting the NF-κB pathway, activating the SIRT-1 and AMPK pathways, normalizing the intestinal microbiome, and alleviating intestinal inflammation. However, clinical studies have yielded inconclusive results regarding the efficacy of resveratrol in alleviating hepatic steatosis or reducing any of the parameters found in MASLD in human patients. The lack of homogeneity between studies, low bioavailability of resveratrol, and population variability when compared to animal models could be the reasons for this.
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Affiliation(s)
- Kamila Kasprzak-Drozd
- Department of Inorganic Chemistry, Medical University of Lublin, Chodźki 4a, 20-093 Lublin, Poland; (K.K.-D.); (A.R.)
| | - Przemysław Niziński
- Department of Pharmacology, Medical University of Lublin, Radziwiłłowska 11, 20-080 Lublin, Poland;
| | - Paulina Kasprzak
- Department of Conservative Dentistry with Endodontics, Medical University of Lublin, Chodźki 6, 20-093 Lublin, Poland;
| | - Adrianna Kondracka
- Department of Obstetrics and Pathology of Pregnancy, Medical University of Lublin, Staszica 16, 20-081 Lublin, Poland;
| | - Tomasz Oniszczuk
- Department of Thermal Technology and Food Process Engineering, University of Life Sciences in Lublin, Głęboka 31, 20-612 Lublin, Poland;
| | - Agata Rusinek
- Department of Inorganic Chemistry, Medical University of Lublin, Chodźki 4a, 20-093 Lublin, Poland; (K.K.-D.); (A.R.)
| | - Anna Oniszczuk
- Department of Inorganic Chemistry, Medical University of Lublin, Chodźki 4a, 20-093 Lublin, Poland; (K.K.-D.); (A.R.)
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Ozturk S, Dursun MA, Yildirim T, Sargin F, Sargin ZG, Ozan ZT. Traditional and nontraditional lipid parameters in Helicobacter pylori infection. Biomark Med 2024. [PMID: 38530363 DOI: 10.2217/bmm-2023-0453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/27/2024] Open
Abstract
Aims: This study sought to evaluate the relationship between Helicobacter pylori infection and traditional and nontraditional lipid parameters, including atherogenic index of plasma, cardiogenic risk ratio, atherogenic coefficient and remnant cholesterol. Methods: After the application of exclusion criteria, 309 patients were allocated according to the absence (n = 52) or presence (n = 257) of H. pylori infection. Results: Total cholesterol, low-density lipoprotein cholesterol (LDL-C) and non-high-density lipoprotein cholesterol (non-HDL-C) levels were nonsignificantly higher, and HDL-C levels were nonsignificantly lower, in the H. pylori-infected patient group. Triglyceride-to-HDL-C ratio, LDL-C-to-HDL-C ratio, atherogenic index of plasma, cardiogenic risk ratio, atherogenic coefficient and remnant cholesterol were comparable among groups. Conclusion: There was no significant association between H. pylori infection and traditional and nontraditional novel lipid parameters and indices.
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Affiliation(s)
- Selcuk Ozturk
- Kırıkkale Yuksek Ihtisas Hospital, Department of Cardiology, Kırıkkale, Turkey
| | - Muhammed A Dursun
- Kestel State Hospital, Department of Internal Medicine, Bursa, Turkey
| | - Tekin Yildirim
- Yozgat Bozok University Faculty of Medicine, Department of Internal Medicine, Yozgat, Turkey
| | - Fatih Sargin
- Kırıkkale Yuksek Ihtisas Hospital, Department of Anesthesiology, Kırıkkale, Turkey
| | - Zeynep G Sargin
- Kırıkkale University Faculty of Medicine, Department of Gastroenterology, Kırıkkale, Turkey
| | - Zeynep T Ozan
- Yozgat Bozok University Faculty of Medicine, Department of Internal Medicine, Yozgat, Turkey
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Rossi I, Marodin G, Lupo MG, Adorni MP, Papotti B, Dall’Acqua S, Ferri N. Gene Silencing of Angiopoietin-like 3 (ANGPTL3) Induced De Novo Lipogenesis and Lipid Accumulation in Huh7 Cell Line. Int J Mol Sci 2024; 25:3708. [PMID: 38612519 PMCID: PMC11011473 DOI: 10.3390/ijms25073708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 03/21/2024] [Accepted: 03/22/2024] [Indexed: 04/14/2024] Open
Abstract
Angiopoietin-like 3 (ANGPTL3) is a hepatokine acting as a negative regulator of lipoprotein lipase (LPL). Vupanorsen, an ANGPTL3 directed antisense oligonucleotide, showed an unexpected increase in liver fat content in humans. Here, we investigated the molecular mechanism linking ANGPTL3 silencing to hepatocyte fat accumulation. Human hepatocarcinoma Huh7 cells were treated with small interfering RNA (siRNA) directed to ANGPTL3, human recombinant ANGPTL3 (recANGPTL3), or their combination. Using Western blot, Oil Red-O, biochemical assays, and ELISA, we analyzed the expression of genes and proteins involved in lipid metabolism. Oil Red-O staining demonstrated that lipid content increased after 48 h of ANGPTL3 silencing (5.89 ± 0.33 fold), incubation with recANGPTL3 (4.08 ± 0.35 fold), or their combination (8.56 ± 0.18 fold), compared to untreated cells. This effect was also confirmed in Huh7-LX2 spheroids. A total of 48 h of ANGPTL3 silencing induced the expression of genes involved in the de novo lipogenesis, such as fatty acid synthase, stearoyl-CoA desaturase, ATP citrate lyase, and Acetyl-Coenzyme A Carboxylase 1 together with the proprotein convertase subtilisin/kexin 9 (PCSK9). Time-course experiments revealed that 6 h post transfection with ANGPTL3-siRNA, the cholesterol esterification by Acyl-coenzyme A cholesterol acyltransferase (ACAT) was reduced, as well as total cholesterol content, while an opposite effect was observed at 48 h. Under the same experimental conditions, no differences in secreted apoB and PCSK9 were observed. Since PCSK9 was altered by the treatment, we tested a possible co-regulation between the two genes. The effect of ANGPTL3-siRNA on the expression of genes involved in the de novo lipogenesis was not counteracted by gene silencing of PCSK9. In conclusion, our in vitro study suggests that ANGPTL3 silencing determines lipid accumulation in Huh7 cells by inducing the de novo lipogenesis independently from PCSK9.
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Affiliation(s)
- Ilaria Rossi
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, 35131 Padova, Italy; (I.R.); (G.M.); (S.D.)
| | - Giorgia Marodin
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, 35131 Padova, Italy; (I.R.); (G.M.); (S.D.)
| | | | - Maria Pia Adorni
- Department of Medicine and Surgery, University of Parma, Via Volturno 39/F, 43125 Parma, Italy;
| | - Bianca Papotti
- Department of Food and Drug, University of Parma, Viale delle Scienze 27/A, 43124 Parma, Italy;
| | - Stefano Dall’Acqua
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, 35131 Padova, Italy; (I.R.); (G.M.); (S.D.)
| | - Nicola Ferri
- Department of Medicine, University of Padova, 35128 Padova, Italy;
- Veneto Institute of Molecular Medicine (VIMM), Via Orus, 2, 35129 Padova, Italy
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Pires da Silva A, Kelleher R, Reynoldson L. Decoding lifespan secrets: the role of the gonad in Caenorhabditis elegans aging. Front Aging 2024; 5:1380016. [PMID: 38605866 PMCID: PMC11008531 DOI: 10.3389/fragi.2024.1380016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 03/18/2024] [Indexed: 04/13/2024]
Abstract
The gonad has become a central organ for understanding aging in C. elegans, as removing the proliferating stem cells in the germline results in significant lifespan extension. Similarly, when starvation in late larval stages leads to the quiescence of germline stem cells the adult nematode enters reproductive diapause, associated with an extended lifespan. This review summarizes recent advancements in identifying the mechanisms behind gonad-mediated lifespan extension, including comparisons with other nematodes and the role of lipid signaling and transcriptional changes. Given that the gonad also mediates lifespan regulation in other invertebrates and vertebrates, elucidating the underlying mechanisms may help to gain new insights into the mechanisms and evolution of aging.
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Kelson CO, Zaytseva YY. Altered lipid metabolism in APC-driven colorectal cancer: the potential for therapeutic intervention. Front Oncol 2024; 14:1343061. [PMID: 38590663 PMCID: PMC10999677 DOI: 10.3389/fonc.2024.1343061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 03/12/2024] [Indexed: 04/10/2024] Open
Abstract
Altered lipid metabolism is a well-recognized feature of solid cancers, including colorectal cancer. In colorectal cancer, upregulation of lipid metabolism contributes to initiation, progression, and metastasis; thus, aberrant lipid metabolism contributes to a poor patient outcome. The inactivating mutation of APC, a vital tumor suppressor in the Wnt signaling pathway, is a key event that occurs early in the majority of colorectal cancer cases. The potential crosstalk between lipid metabolism and APC-driven colorectal cancer is poorly understood. This review collectively highlights and summarizes the limited understanding between mutations in APC and the upregulation of Wnt/beta-catenin signaling and lipid metabolism. The interconnection between APC inactivation and aberrant lipid metabolism activates Wnt/beta-catenin signaling which causes transcriptome, epigenetic, and microbiome changes to promote colorectal cancer initiation and progression. Furthermore, the downstream effects of this collaborative effort between aberrant Wnt/beta-catenin signaling and lipid metabolism are enhanced stemness, cellular proliferation, prooncogenic signaling, and survival. Understanding the mechanistic link between APC inactivation and alterations in lipid metabolism may foster identification of new therapeutic targets to enable development of more efficacious strategies for prevention and/or treatment of colorectal cancer.
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Affiliation(s)
- Courtney O. Kelson
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY, United States
| | - Yekaterina Y. Zaytseva
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY, United States
- Markey Cancer Center, University of Kentucky, Lexington, KY, United States
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Wüstner D, Egebjerg JM, Lauritsen L. Dynamic Mode Decomposition of Multiphoton and Stimulated Emission Depletion Microscopy Data for Analysis of Fluorescent Probes in Cellular Membranes. Sensors (Basel) 2024; 24:2096. [PMID: 38610307 PMCID: PMC11013970 DOI: 10.3390/s24072096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Revised: 03/14/2024] [Accepted: 03/21/2024] [Indexed: 04/14/2024]
Abstract
An analysis of the membrane organization and intracellular trafficking of lipids often relies on multiphoton (MP) and super-resolution microscopy of fluorescent lipid probes. A disadvantage of particularly intrinsically fluorescent lipid probes, such as the cholesterol and ergosterol analogue, dehydroergosterol (DHE), is their low MP absorption cross-section, resulting in a low signal-to-noise ratio (SNR) in live-cell imaging. Stimulated emission depletion (STED) microscopy of membrane probes like Nile Red enables one to resolve membrane features beyond the diffraction limit but exposes the sample to a lot of excitation light and suffers from a low SNR and photobleaching. Here, dynamic mode decomposition (DMD) and its variant, higher-order DMD (HoDMD), are applied to efficiently reconstruct and denoise the MP and STED microscopy data of lipid probes, allowing for an improved visualization of the membranes in cells. HoDMD also allows us to decompose and reconstruct two-photon polarimetry images of TopFluor-cholesterol in model and cellular membranes. Finally, DMD is shown to not only reconstruct and denoise 3D-STED image stacks of Nile Red-labeled cells but also to predict unseen image frames, thereby allowing for interpolation images along the optical axis. This important feature of DMD can be used to reduce the number of image acquisitions, thereby minimizing the light exposure of biological samples without compromising image quality. Thus, DMD as a computational tool enables gentler live-cell imaging of fluorescent probes in cellular membranes by MP and STED microscopy.
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Affiliation(s)
- Daniel Wüstner
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, DK-5230 Odense M, Denmark; (J.M.E.); (L.L.)
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Kisioglu B, Tamer F. Impact of lipid emulsions in parenteral nutrition on platelets: a literature review. J Nutr Sci 2024; 13:e18. [PMID: 38572365 PMCID: PMC10988153 DOI: 10.1017/jns.2024.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/07/2024] [Accepted: 02/16/2024] [Indexed: 04/05/2024] Open
Abstract
Lipid emulsions are essential components of parenteral nutrition solutions that provide energy and essential fatty acids. The complexity of the formulations of lipid emulsions may lead to adverse outcomes such as platelet reactivity and changes in platelet aggregation and related coagulation. Platelets are responsible for haemostasis; they activate and demonstrate morphological changes upon extracellular factors to maintain blood fluidity and vascular integrity. Although parenteral nutrition lipid emulsions are generally found safe with regard to modulation of platelet activity, studies are still accumulating. Thus, this review aims to investigate platelet-related changes by parenteral nutrition lipid emulsions in human studies. Studies have pointed out patients at risk of bleeding and increased platelet aggregation responses due to the administration of lipid emulsions. Lipid emulsions may further benefit patients at high risk of thrombosis due to anti-thrombotic effects and should be cautiously used in patients with thrombocytopenia. The reported platelet-related changes might be associated with the fatty acid change in the plasma membranes of platelets following changes in platelet synthesis and plasma levels of eicosanoids. In conclusion, studies investigating platelets and parenteral nutrition should be supported to minimize the adverse effects and to benefit from the potential protective effects of parenteral nutrition lipid emulsions.
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Affiliation(s)
- Betul Kisioglu
- Hacettepe University, Faculty of Health Sciences, Department of Nutrition and Dietetics, Ankara, Turkey
- Duzce University, Faculty of Health Sciences, Department of Nutrition and Dietetics, Duzce, Turkey
| | - Funda Tamer
- Hacettepe University, Faculty of Health Sciences, Department of Nutrition and Dietetics, Ankara, Turkey
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Kumpf VJ, Gray B, Monczka J, Zeraschi S, Klek S. Parenteral nutrition at home/long-term parenteral nutrition. Am J Health Syst Pharm 2024:zxae081. [PMID: 38527076 DOI: 10.1093/ajhp/zxae081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Indexed: 03/27/2024] Open
Abstract
DISCLAIMER In an effort to expedite the publication of articles, AJHP is posting manuscripts online as soon as possible after acceptance. Accepted manuscripts have been peer-reviewed and copyedited, but are posted online before technical formatting and author proofing. These manuscripts are not the final version of record and will be replaced with the final article (formatted per AJHP style and proofed by the authors) at a later time. PURPOSE Some diseases require that patients receive parenteral nutrition (PN) over a prolonged time period. Long-term administration of PN can further complicate an already complex therapy, posing additional risk of potential complications. This article is based on presentations and discussions held at the International Safety and Quality of PN Summit, providing insights into aspects of home PN (HPN) and examples of good HPN practice. SUMMARY One critical step in the HPN process is when patients transition from a hospital to a home setting, and vice versa. Generally, electronic PN ordering is not feasible in an HPN setting, leading to potential difficulties in communication and coordination. HPN requires that patients (or their home caregivers) administer PN, and thus their education and competency are crucial. Likewise, the choice of PN formulation is of great importance. For example, using more modern intravenous lipid emulsions containing medium-chain triglycerides, olive oil, and/or fish oil can provide benefits in terms of liver function during long-term HPN. Internationally, there are wide variations in delivery of HPN, with compounded PN dominating in some countries while others make greater use of market-authorized multichamber bags (MCBs). Patient-related factors, institutional considerations, and the availability of different MCB formulations, are also contributing factors guiding formulation and delivery system preferences. CONCLUSION Education and communication remain key components of a successful HPN process. The information shared here may help to motivate efforts to improve HPN processes and to consider the often-differing perspectives of patients and their healthcare professionals.
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Affiliation(s)
- Vanessa J Kumpf
- Center for Human Nutrition, Vanderbilt University Medical Center, Nashville, TN, USA
| | | | | | - Sarah Zeraschi
- Pharmacy Department and Nutrition and Intestinal Failure Services, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Stanislaw Klek
- Surgical Oncology Clinic, The Maria Sklodowska-Curie National Cancer Institute, Krakow, Poland
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Delgado-Ramírez M, López-Serrano AL, Sánchez-Armass S, Meza U, Rodríguez-Menchaca AA. Crosstalk between cholesterol and PIP 2 in the regulation of Kv7.2/Kv7.3 channels. Biol Chem 2024; 405:161-165. [PMID: 37552610 DOI: 10.1515/hsz-2023-0204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 07/25/2023] [Indexed: 08/10/2023]
Abstract
The activity of neuronal Kv7.2/Kv7.3 channels is critically dependent on PIP2 and finely modulated by cholesterol. Here, we report the crosstalk between cholesterol and PIP2 in the regulation of Kv7.2/Kv7.3 channels. Our results show that currents passing through Kv7.2/Kv7.3 channels in cholesterol-depleted cells, by acute application of methyl-β-cyclodextrin (MβCD), were less sensitive to PIP2 dephosphorylation strategies than those of control cells, suggesting that cholesterol depletion enhances the Kv7.2/Kv7.3-PIP2 interaction. In contrast, the sensitivity of Kv7.2/Kv7.3 channels to acute membrane cholesterol depletion by MβCD was not altered in mutant channels with different apparent affinities for PIP2.
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Affiliation(s)
- Mayra Delgado-Ramírez
- Departamento de Fisiología y Biofísica, Facultad de Medicina, Universidad Autónoma de San Luis Potosí, Av. Venustiano Carranza #2405, Col. Los Filtros, San Luis Potosí, SLP, 78210, México
| | - Ana Laura López-Serrano
- Departamento de Fisiología y Biofísica, Facultad de Medicina, Universidad Autónoma de San Luis Potosí, Av. Venustiano Carranza #2405, Col. Los Filtros, San Luis Potosí, SLP, 78210, México
| | - Sergio Sánchez-Armass
- Departamento de Fisiología y Biofísica, Facultad de Medicina, Universidad Autónoma de San Luis Potosí, Av. Venustiano Carranza #2405, Col. Los Filtros, San Luis Potosí, SLP, 78210, México
| | - Ulises Meza
- Departamento de Fisiología y Biofísica, Facultad de Medicina, Universidad Autónoma de San Luis Potosí, Av. Venustiano Carranza #2405, Col. Los Filtros, San Luis Potosí, SLP, 78210, México
| | - Aldo A Rodríguez-Menchaca
- Departamento de Fisiología y Biofísica, Facultad de Medicina, Universidad Autónoma de San Luis Potosí, Av. Venustiano Carranza #2405, Col. Los Filtros, San Luis Potosí, SLP, 78210, México
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Yin Y, Wang J, Li J. A concise and scalable chemoenzymatic synthesis of prostaglandins. Nat Commun 2024; 15:2523. [PMID: 38514642 PMCID: PMC10957970 DOI: 10.1038/s41467-024-46960-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Accepted: 03/15/2024] [Indexed: 03/23/2024] Open
Abstract
Prostaglandins have garnered significant attention from synthetic chemists due to their exceptional biological activities. In this report, we present a concise chemoenzymatic synthesis method for several representative prostaglandins, achieved in 5 to 7 steps. Notably, the common intermediate bromohydrin, a radical equivalent of Corey lactone, is chemoenzymatically synthesized in only two steps, which allows us to complete the synthesis of prostaglandin F2α in five steps on a 10-gram scale. The chiral cyclopentane core is introduced with high enantioselectivity, while the lipid chains are sequentially incorporated through a cost-effective process involving bromohydrin formation, nickel-catalyzed cross-couplings, and Wittig reactions. This cost-efficient synthesis route for prostaglandins holds the potential to make prostaglandin-related drugs more affordable and facilitate easier access to their analogues.
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Affiliation(s)
- Yunpeng Yin
- Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs and Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai, China
| | - Jinxin Wang
- Department of Phytochemistry, School of Pharmacy, Second Military Medical University, Shanghai, China
| | - Jian Li
- Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs and Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai, China.
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Lane BJ, Ma Y, Yan N, Wang B, Ackermann K, Karamanos TK, Bode BE, Pliotas C. Monitoring the conformational ensemble and lipid environment of a mechanosensitive channel under cyclodextrin-induced membrane tension. Structure 2024:S0969-2126(24)00080-7. [PMID: 38521071 DOI: 10.1016/j.str.2024.02.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 12/29/2023] [Accepted: 02/27/2024] [Indexed: 03/25/2024]
Abstract
Membrane forces shift the equilibria of mechanosensitive channels enabling them to convert mechanical cues into electrical signals. Molecular tools to stabilize and methods to capture their highly dynamic states are lacking. Cyclodextrins can mimic tension through the sequestering of lipids from membranes. Here we probe the conformational ensemble of MscS by EPR spectroscopy, the lipid environment with NMR, and function with electrophysiology under cyclodextrin-induced tension. We show the extent of MscS activation depends on the cyclodextrin-to-lipid ratio, and that lipids are depleted slower when MscS is present. This has implications in MscS' activation kinetics when distinct membrane scaffolds such as nanodiscs or liposomes are used. We find MscS transits from closed to sub-conducting state(s) before it desensitizes, due to the lack of lipid availability in its vicinity required for closure. Our approach allows for monitoring tension-sensitive states in membrane proteins and screening molecules capable of inducing molecular tension in bilayers.
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Affiliation(s)
- Benjamin J Lane
- Astbury Centre for Structural Molecular Biology, School of Biomedical Sciences, University of Leeds, Leeds LS2 9JT, UK
| | - Yue Ma
- School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic and Health Science Centre, The University of Manchester, Manchester M13 9PT, UK
| | - Nana Yan
- Astbury Centre for Structural Molecular Biology, School of Biomedical Sciences, University of Leeds, Leeds LS2 9JT, UK
| | - Bolin Wang
- School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic and Health Science Centre, The University of Manchester, Manchester M13 9PT, UK
| | - Katrin Ackermann
- EaStCHEM School of Chemistry, Biomedical Sciences Research Complex and Centre of Magnetic Resonance, University of St Andrews, St Andrews KY16 9ST, UK
| | - Theodoros K Karamanos
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London SW7 2AZ, UK
| | - Bela E Bode
- EaStCHEM School of Chemistry, Biomedical Sciences Research Complex and Centre of Magnetic Resonance, University of St Andrews, St Andrews KY16 9ST, UK
| | - Christos Pliotas
- Astbury Centre for Structural Molecular Biology, School of Biomedical Sciences, University of Leeds, Leeds LS2 9JT, UK; School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic and Health Science Centre, The University of Manchester, Manchester M13 9PT, UK; Manchester Institute of Biotechnology, The University of Manchester, Manchester M1 7DN, UK.
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Johnson AM, Charre-Perales J, Todd A, Arguelles-Ramos M, Ali AAB. The impact of dietary oregano essential oil supplementation on fatty acid composition and lipid stability in eggs stored at room temperature. Br Poult Sci 2024:1-8. [PMID: 38507293 DOI: 10.1080/00071668.2024.2326886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 02/17/2024] [Indexed: 03/22/2024]
Abstract
1. In many countries, eggs are not refrigerated and must be stored at room temperature. The objective of this study was to explore the effects of dietary oregano oil (275 mg/ kg; ORE) versus an unsupplemented control diet (CON) on laying hens on the shelf life and fatty acid profile of eggs.2. Treatments were randomly distributed into 10 pens containing 27 birds each. A total of 200 eggs were collected from both groups on the same day and were stored for either 0, 10, 21 and 35 d. At each storage time, egg yolks were analysed for fatty acid profile and lipid peroxidation.3. The main indicator of lipid peroxidation, malondialdehyde (MDA), was significantly lower in ORE eggs compared to CON eggs (p = 0.001). Storage time had a significant impact on MDA concentrations (p = 0.023), with the highest found after 35 d. Significant differences were found for individual fatty acids, saturated (SFA), monounsaturated (MUFA) and polyunsaturated fatty acids (PUFA). Palmitic acid, stearic acid, oleic acid, linoleic acid and arachidonic acid were significantly lower in ORE eggs compared to CON eggs (p < 0.05). Palmitoleic acid (p = 0.002), linolenic acid (p = 0.001) and docosahexaenoic acid (DHA, p = 0.001) were significantly higher in ORE eggs.4. Storage only affected oleic, linolenic, linoleic, arachidonic and docosahexaenoic acids (p < 0.05). Total SFA, MUFA, n-6 and ratio of n-3 to n-6 (n-3:n-6) PUFA were significantly higher in CON eggs (p < 0.05). The ratio of SFA to PUFA (SFA:PUFA, p = 0.005) and total n-3 PUFA (p = 0.001) were significantly higher in ORE eggs.5. The n-3:n-6 ratio was significantly impacted by treatment (p = 0.021) and storage (p = 0.031) with no significant interaction. This ratio is important for human health indication and could lead to the development of designer eggs.
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Affiliation(s)
- A M Johnson
- Department of Animal and Veterinary Sciences, Clemson University, Clemson, SC, USA
| | - J Charre-Perales
- Department of Animal and Veterinary Sciences, Clemson University, Clemson, SC, USA
| | - A Todd
- College of Arts and Sciences, University of South Carolina, Columbia, SC, USA
| | - M Arguelles-Ramos
- Department of Animal and Veterinary Sciences, Clemson University, Clemson, SC, USA
| | - A A B Ali
- Department of Animal and Veterinary Sciences, Clemson University, Clemson, SC, USA
- Animal Behavior and Management, Veterinary Medicine, Cairo University, Cairo, Egypt
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Butler CA, Mendoza Arvilla A, Milinkeviciute G, Da Cunha C, Kawauchi S, Rezaie N, Liang HY, Javonillo D, Thach A, Wang S, Collins S, Walker A, Shi KX, Neumann J, Gomez-Arboledas A, Henningfield CM, Hohsfield LA, Mapstone M, Tenner AJ, LaFerla FM, Mortazavi A, MacGregor GR, Green KN. The Abca7 V1613M variant reduces Aβ generation, plaque load, and neuronal damage. Alzheimers Dement 2024. [PMID: 38506634 DOI: 10.1002/alz.13783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 12/21/2023] [Accepted: 12/23/2023] [Indexed: 03/21/2024]
Abstract
BACKGROUND Variants in ABCA7, a member of the ABC transporter superfamily, have been associated with increased risk for developing late onset Alzheimer's disease (LOAD). METHODS CRISPR-Cas9 was used to generate an Abca7V1613M variant in mice, modeling the homologous human ABCA7V1599M variant, and extensive characterization was performed. RESULTS Abca7V1613M microglia show differential gene expression profiles upon lipopolysaccharide challenge and increased phagocytic capacity. Homozygous Abca7V1613M mice display elevated circulating cholesterol and altered brain lipid composition. When crossed with 5xFAD mice, homozygous Abca7V1613M mice display fewer Thioflavin S-positive plaques, decreased amyloid beta (Aβ) peptides, and altered amyloid precursor protein processing and trafficking. They also exhibit reduced Aβ-associated inflammation, gliosis, and neuronal damage. DISCUSSION Overall, homozygosity for the Abca7V1613M variant influences phagocytosis, response to inflammation, lipid metabolism, Aβ pathology, and neuronal damage in mice. This variant may confer a gain of function and offer a protective effect against Alzheimer's disease-related pathology. HIGHLIGHTS ABCA7 recognized as a top 10 risk gene for developing Alzheimer's disease. Loss of function mutations result in increased risk for LOAD. V1613M variant reduces amyloid beta plaque burden in 5xFAD mice. V1613M variant modulates APP processing and trafficking in 5xFAD mice. V1613M variant reduces amyloid beta-associated damage in 5xFAD mice.
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Affiliation(s)
- Claire A Butler
- Department of Neurobiology and Behavior, University of California, Irvine, California, USA
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, California, USA
| | - Adrian Mendoza Arvilla
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, California, USA
| | - Giedre Milinkeviciute
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, California, USA
| | - Celia Da Cunha
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, California, USA
| | - Shimako Kawauchi
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, California, USA
- Transgenic Mouse Facility, ULAR, Office of Research, University of California, Irvine, California, USA
| | - Narges Rezaie
- Department of Developmental and Cell Biology, University of California, Irvine, California, USA
- Center for Complex Biological Systems, University of California, Irvine, California, USA
| | - Heidi Y Liang
- Department of Developmental and Cell Biology, University of California, Irvine, California, USA
- Center for Complex Biological Systems, University of California, Irvine, California, USA
| | - Dominic Javonillo
- Department of Neurobiology and Behavior, University of California, Irvine, California, USA
| | - Annie Thach
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, California, USA
| | - Shuling Wang
- Transgenic Mouse Facility, ULAR, Office of Research, University of California, Irvine, California, USA
| | - Sherilyn Collins
- Transgenic Mouse Facility, ULAR, Office of Research, University of California, Irvine, California, USA
| | - Amber Walker
- Transgenic Mouse Facility, ULAR, Office of Research, University of California, Irvine, California, USA
| | - Kai-Xuan Shi
- Transgenic Mouse Facility, ULAR, Office of Research, University of California, Irvine, California, USA
| | - Jonathan Neumann
- Transgenic Mouse Facility, ULAR, Office of Research, University of California, Irvine, California, USA
| | - Angela Gomez-Arboledas
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, California, USA
| | - Caden M Henningfield
- Department of Neurobiology and Behavior, University of California, Irvine, California, USA
| | - Lindsay A Hohsfield
- Department of Neurobiology and Behavior, University of California, Irvine, California, USA
| | - Mark Mapstone
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, California, USA
- Department of Neurology, University of California, Irvine, California, USA
| | - Andrea J Tenner
- Department of Neurobiology and Behavior, University of California, Irvine, California, USA
- Department of Molecular Biology & Biochemistry, University of California, Irvine, California, USA
- Department of Pathology and Laboratory Medicine, University of California, Irvine, California, USA
| | - Frank M LaFerla
- Department of Neurobiology and Behavior, University of California, Irvine, California, USA
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, California, USA
| | - Ali Mortazavi
- Department of Developmental and Cell Biology, University of California, Irvine, California, USA
- Center for Complex Biological Systems, University of California, Irvine, California, USA
| | - Grant R MacGregor
- Transgenic Mouse Facility, ULAR, Office of Research, University of California, Irvine, California, USA
- Department of Developmental and Cell Biology, University of California, Irvine, California, USA
| | - Kim N Green
- Department of Neurobiology and Behavior, University of California, Irvine, California, USA
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, California, USA
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49
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Marosvölgyi T, Mintál K, Farkas N, Sipos Z, Makszin L, Szabó É, Tóth A, Kocsis B, Kovács K, Hormay E, Lénárd L, Karádi Z, Bufa A. Antibiotics and probiotics-induced effects on the total fatty acid composition of feces in a rat model. Sci Rep 2024; 14:6542. [PMID: 38503819 PMCID: PMC10951306 DOI: 10.1038/s41598-024-57046-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 03/13/2024] [Indexed: 03/21/2024] Open
Abstract
Fatty acids (FAs) play important roles as membrane components and signal transduction molecules. Changes in short chain FA (SCFA) composition are associated with gut microbiota modifications. However, the effect of bacteria-driven changes on the detailed FA spectrum has not been explored yet. We investigated the effect of antibiotics (ABx) and/or probiotics, in four treatment groups on rat stool FA composition. Principal component analysis indicated that the chromatogram profiles of the treatment groups differ, which was also observed at different time points. Linear mixed effects models showed that in the parameters compared (sampling times, treatments. and their interactions), both the weight percentage and the concentration of FAs were affected by ABx and probiotic administration. This study found that the gut microbiome defines trans and branched saturated FAs, most saturated FAs, and unsaturated FAs with less carbon atoms. These results are among the first ones to demonstrate the restoring effects of a probiotic mixture on a substantial part of the altered total FA spectrum, and also revealed a previously unknown relationship between gut bacteria and a larger group of FAs. These findings suggest that intestinal bacteria produce not only SCFAs but also other FAs that may affect the host's physiological processes.
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Affiliation(s)
- Tamás Marosvölgyi
- Institute of Bioanalysis, Medical School, University of Pécs, Pécs, 7624, Hungary
| | - Kitti Mintál
- Institute of Physiology, Medical School, University of Pécs, Pécs, 7624, Hungary
- Medical and Engineering Multidisciplinary Cellular Bioimpedance Research Group, Szentágothai Research Centre, University of Pécs, Pécs, 7624, Hungary
| | - Nelli Farkas
- Institute of Bioanalysis, Medical School, University of Pécs, Pécs, 7624, Hungary
| | - Zoltán Sipos
- Institute of Bioanalysis, Medical School, University of Pécs, Pécs, 7624, Hungary
| | - Lilla Makszin
- Institute of Bioanalysis, Medical School, University of Pécs, Pécs, 7624, Hungary
| | - Éva Szabó
- Department of Biochemistry and Medical Chemistry, Medical School, University of Pécs, Pécs, 7624, Hungary.
| | - Attila Tóth
- Institute of Physiology, Medical School, University of Pécs, Pécs, 7624, Hungary
- Medical and Engineering Multidisciplinary Cellular Bioimpedance Research Group, Szentágothai Research Centre, University of Pécs, Pécs, 7624, Hungary
| | - Béla Kocsis
- Department of Medical Microbiology and Immunology, Medical School, University of Pécs, Pécs, 7624, Hungary
| | - Krisztina Kovács
- Department of Medical Microbiology and Immunology, Medical School, University of Pécs, Pécs, 7624, Hungary
| | - Edina Hormay
- Institute of Physiology, Medical School, University of Pécs, Pécs, 7624, Hungary
- Medical and Engineering Multidisciplinary Cellular Bioimpedance Research Group, Szentágothai Research Centre, University of Pécs, Pécs, 7624, Hungary
| | - László Lénárd
- Institute of Physiology, Medical School, University of Pécs, Pécs, 7624, Hungary
- Medical and Engineering Multidisciplinary Cellular Bioimpedance Research Group, Szentágothai Research Centre, University of Pécs, Pécs, 7624, Hungary
| | - Zoltán Karádi
- Institute of Physiology, Medical School, University of Pécs, Pécs, 7624, Hungary
- Medical and Engineering Multidisciplinary Cellular Bioimpedance Research Group, Szentágothai Research Centre, University of Pécs, Pécs, 7624, Hungary
| | - Anita Bufa
- Institute of Bioanalysis, Medical School, University of Pécs, Pécs, 7624, Hungary
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50
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Kotlyarov S. Involvement of Lipids and Lipid Mediators in Inflammation and Atherogenesis. Curr Med Chem 2024; 31:CMC-EPUB-139274. [PMID: 38504569 DOI: 10.2174/0109298673303369240312092913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 02/22/2024] [Accepted: 02/27/2024] [Indexed: 03/21/2024]
Abstract
Atherosclerosis is the pathophysiological basis for major diseases, such as coronary heart disease, cerebral stroke, and peripheral arterial disease, which have become epidemic in modern Western society. Atherosclerosis has a complex nature that involves mutually related immune and metabolic mechanisms. Many cells of the vascular wall and peripheral bloodstream, including endothelial cells, monocytes and macrophages, platelets, and others, are involved in the development and progression of atherosclerosis. These cells perform a number of innate immune functions, disorders of which are associated with atherosclerosis. Furthermore, lipids are not only a morphological substrate but also important participants in the development of atherosclerosis. They are involved in the development and resolution of inflammation and mediate vascular cell function.
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