1
|
Huang Y, Xin H, Lin Q, Yang G, Zhang Y, Cao D, Yu X. A fluorescent probe for detecting bisulfite/sulfite in lipid droplets and tracking the dynamics of lipid droplets. Talanta 2024; 279:126605. [PMID: 39084038 DOI: 10.1016/j.talanta.2024.126605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 07/01/2024] [Accepted: 07/22/2024] [Indexed: 08/02/2024]
Abstract
Intracellular lipid droplets (LDs) are important organelles regulating intracellular redox processes. Endogenous bisulfite/sulfite (HSO3-/SO32-) is one of the metabolites of thiol metabolism. The variation in HSO3-/SO32- content around LDs is closely related to cellular homeostasis. However, there is currently no effective method to visualize and quantify the dynamic changes in HSO3-/SO32- content around LDs. In this work, a fluorescent probe MC-BEN utilizing a triphenylamine basic framework was developed to selectively recognize HSO3-/SO32- via a nucleophilic addition reaction. The probe exhibits excellent anti-interference capability, short response time, outstanding photostability, and a low fluorescence detection limit (6.1 μM) for HSO3-/SO32- recognition. More interesting, there is a trend of accelerated contact between LDs and lysosomes after MC-BEN targeting LDs and reacting with endogenous/exogenous HSO3-/SO32-, which may provide new ideas for the study of intracellular lysosomal lipophagy.
Collapse
Affiliation(s)
- Yan Huang
- School of Materials Science and Engineering, University of Jinan, Jinan, 250022, Shandong, China
| | - Haotian Xin
- School of Materials Science and Engineering, University of Jinan, Jinan, 250022, Shandong, China
| | - Qiaowen Lin
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, Shandong, China
| | - Guiyi Yang
- School of Materials Science and Engineering, University of Jinan, Jinan, 250022, Shandong, China
| | - Yan Zhang
- School of Materials Science and Engineering, University of Jinan, Jinan, 250022, Shandong, China
| | - Duxia Cao
- School of Materials Science and Engineering, University of Jinan, Jinan, 250022, Shandong, China.
| | - Xiaoqiang Yu
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, Shandong, China.
| |
Collapse
|
2
|
Bisogno S, Depciuch J, Gulzar H, Heber MF, Kobiałka M, Gąsior Ł, Bereta A, Pieczara A, Fic K, Musson R, Garcia Gamero G, Pardo Martinez M, Fornés Pérez A, Tatíčková M, Holubcova Z, Barańska M, Ptak GE. Female-age-dependent changes in the lipid fingerprint of the mammalian oocytes. Hum Reprod 2024:deae225. [PMID: 39366679 DOI: 10.1093/humrep/deae225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 09/09/2024] [Indexed: 10/06/2024] Open
Abstract
STUDY QUESTION Can oocyte functionality be assessed by observing changes in their intracytoplasmic lipid droplets (LDs) profiles? SUMMARY ANSWER Lipid profile changes can reliably be detected in human oocytes; lipid changes are linked with maternal age and impaired developmental competence in a mouse model. WHAT IS KNOWN ALREADY In all cellular components, lipid damage is the earliest manifestation of oxidative stress (OS), which leads to a cascade of negative consequences for organelles and DNA. Lipid damage is marked by the accumulation of LDs. We hypothesized that impaired oocyte functionality resulting from aging and associated OS could be assessed by changes in LDs profile, hereafter called lipid fingerprint (LF). STUDY DESIGN, SIZE, DURATION To investigate if it is possible to detect differences in oocyte LF, we subjected human GV-stage oocytes to spectroscopic examinations. For this, a total of 48 oocytes derived from 26 young healthy women (under 33 years of age) with no history of infertility, enrolled in an oocyte donation program, were analyzed. Furthermore, 30 GV human oocytes from 12 women were analyzed by transmission electron microscopy (TEM). To evaluate the effect of oocytes' lipid profile changes on embryo development, a total of 52 C57BL/6 wild-type mice and 125 Gnpat+/- mice were also used. PARTICIPANTS/MATERIALS, SETTING, METHODS Human oocytes were assessed by label-free cell imaging via coherent anti-Stokes Raman spectroscopy (CARS). Further confirmation of LF changes was conducted using spontaneous Raman followed by Fourier transform infrared (FTIR) spectroscopies and TEM. Additionally, to evaluate whether LF changes are associated with developmental competence, mouse oocytes and blastocysts were evaluated using TEM and the lipid dyes BODIPY and Nile Red. Mouse embryonic exosomes were evaluated using flow cytometry, FTIR and FT-Raman spectroscopies. MAIN RESULTS AND THE ROLE OF CHANCE Here we demonstrated progressive changes in the LF of oocytes associated with the woman's age consisting of increased LDs size, area, and number. LF variations in oocytes were detectable also within individual donors. This finding makes LF assessment a promising tool to grade oocytes of the same patient, based on their quality. We next demonstrated age-associated changes in oocytes reflected by lipid peroxidation and composition changes; the accumulation of carotenoids; and alterations of structural properties of lipid bilayers. Finally, using a mouse model, we showed that LF changes in oocytes are negatively associated with the secretion of embryonic exosomes prior to implantation. Deficient exosome secretion disrupts communication between the embryo and the uterus and thus may explain recurrent implantation failures in advanced-age patients. LIMITATIONS, REASONS FOR CAUTION Due to differences in lipid content between different species' oocytes, the developmental impact of lipid oxidation and consequent LF changes may differ across mammalian oocytes. WIDER IMPLICATIONS OF THE FINDINGS Our findings open the possibility to develop an innovative tool for oocyte assessment and highlight likely functional connections between oocyte LDs and embryonic exosome secretion. By recognizing the role of oocyte LF in shaping the embryo's ability to implant, our original work points to future directions of research relevant to developmental biology and reproductive medicine. STUDY FUNDING/COMPETING INTEREST(S) This research was funded by National Science Centre of Poland, Grants: 2021/41/B/NZ3/03507 and 2019/35/B/NZ4/03547 (to G.E.P.); 2022/44/C/NZ4/00076 (to M.F.H.) and 2019/35/N/NZ3/03213 (to Ł.G.). M.F.H. is a National Agency for Academic Exchange (NAWA) fellow (GA ULM/2019/1/00097/U/00001). K.F. is a Diamond Grant fellow (Ministry of Education and Science GA 0175/DIA/2019/28). The open-access publication of this article was funded by the Priority Research Area BioS under the program "Excellence Initiative - Research University" at the Jagiellonian University in Krakow. The authors declare no competing interest. TRIAL REGISTRATION NUMBER N/A.
Collapse
Affiliation(s)
- Simona Bisogno
- Malopolska Centre of Biotechnology, Jagiellonian University in Kraków, Kraków, Poland
| | - Joanna Depciuch
- Institute of Nuclear Physics, Polish Academy of Sciences, Kraków, Poland
- Department of Biochemistry and Molecular Biology, Medical University of Lublin, Lublin, Poland
| | - Hafsa Gulzar
- Malopolska Centre of Biotechnology, Jagiellonian University in Kraków, Kraków, Poland
- Doctoral School of Exact and Natural Sciences, Jagiellonian University in Krakow, Kraków, Poland
| | - Maria Florencia Heber
- Malopolska Centre of Biotechnology, Jagiellonian University in Kraków, Kraków, Poland
| | - Michał Kobiałka
- Malopolska Centre of Biotechnology, Jagiellonian University in Kraków, Kraków, Poland
| | - Łukasz Gąsior
- Malopolska Centre of Biotechnology, Jagiellonian University in Kraków, Kraków, Poland
| | - Adrianna Bereta
- Malopolska Centre of Biotechnology, Jagiellonian University in Kraków, Kraków, Poland
| | - Anna Pieczara
- Doctoral School of Exact and Natural Sciences, Jagiellonian University in Krakow, Kraków, Poland
- Jagiellonian Centre for Experimental Therapeutics, Jagiellonian University in Krakow, Kraków, Poland
| | - Kinga Fic
- Malopolska Centre of Biotechnology, Jagiellonian University in Kraków, Kraków, Poland
| | - Richard Musson
- Malopolska Centre of Biotechnology, Jagiellonian University in Kraków, Kraków, Poland
- Doctoral School of Exact and Natural Sciences, Jagiellonian University in Krakow, Kraków, Poland
| | - Gabriel Garcia Gamero
- Malopolska Centre of Biotechnology, Jagiellonian University in Kraków, Kraków, Poland
| | - Maria Pardo Martinez
- Malopolska Centre of Biotechnology, Jagiellonian University in Kraków, Kraków, Poland
| | - Alba Fornés Pérez
- Malopolska Centre of Biotechnology, Jagiellonian University in Kraków, Kraków, Poland
| | - Martina Tatíčková
- Department of Histology and Embryology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Zuzana Holubcova
- Department of Histology and Embryology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
- Reprofit International, Brno, Czech Republic
| | - Małgorzata Barańska
- Jagiellonian Centre for Experimental Therapeutics, Jagiellonian University in Krakow, Kraków, Poland
- Faculty of Chemistry, Jagiellonian University in Kraków, Kraków, Poland
| | - Grażyna Ewa Ptak
- Malopolska Centre of Biotechnology, Jagiellonian University in Kraków, Kraków, Poland
| |
Collapse
|
3
|
Liu M, Bu Y, Wang D, Tang L, Hu D, Li L, Gan X. Simultaneous two-color visualization of lipid droplets and lysosomes for cell homeostasis monitoring using a single fluorescent probe. Analyst 2024. [PMID: 39171995 DOI: 10.1039/d4an00912f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2024]
Abstract
Lipid droplets (LDs) and lysosomes are vital organelles that play crucial roles in various physiological and pathological processes. However, simultaneous two-color visualization of these two organelles using a single probe for cell homeostasis monitoring remains a challenge due to the lack of rational design strategies. To address this issue, we have developed an aggregation-induced emission (AIE) fluorescent probe named TPE-NDI-Mor with an electron donor (D)-acceptor (A) structure, which can stain both LDs and lysosomes with high selectivity through green and red fluorescence imaging, respectively. A detailed mechanism study revealed that TPE-NDI-Mor, with a twisted intramolecular charge transfer (TICT) effect, shows a high affinity for a polar microenvironment. Additionally, the probe also demonstrates good stability, high anti-interference performance and a large Stokes shift, making it suitable for visualizing cell homeostasis and further disease diagnosis by tracking the dynamic changes of LDs and lysosomes.
Collapse
Affiliation(s)
- Mengxiao Liu
- School of Materials and Chemistry, Anhui Agricultural University, 230036 Hefei, P. R. China.
| | - Yingcui Bu
- School of Materials and Chemistry, Anhui Agricultural University, 230036 Hefei, P. R. China.
| | - Dongxiao Wang
- School of Materials and Chemistry, Anhui Agricultural University, 230036 Hefei, P. R. China.
| | - Lihua Tang
- School of Materials and Chemistry, Anhui Agricultural University, 230036 Hefei, P. R. China.
| | - Didi Hu
- School of Materials and Chemistry, Anhui Agricultural University, 230036 Hefei, P. R. China.
| | - Longchun Li
- School of Materials and Chemistry, Anhui Agricultural University, 230036 Hefei, P. R. China.
| | - Xiaoping Gan
- School of Materials and Chemistry, Anhui Agricultural University, 230036 Hefei, P. R. China.
- Key Laboratory of Agricultural Sensors, Ministry of Agriculture Rural Affairs, 230036 Hefei, P. R. China
| |
Collapse
|
4
|
Alessia C, Federica DA, Claudia P, Barbara C, Laura Z, Silvano O. A preliminary survey of the cellular responses of the black fungus Cryomyces antarcticus to long and short-term dehydration. ENVIRONMENTAL MICROBIOLOGY REPORTS 2024; 16:e13309. [PMID: 39075848 PMCID: PMC11286975 DOI: 10.1111/1758-2229.13309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 06/08/2024] [Indexed: 07/31/2024]
Abstract
The McMurdo Dry Valleys in Southern Victoria Land, Antarctica, are known for their extreme aridity, cold, and nutrient-poor conditions. These valleys provide a valuable comparison to environments on Mars. The survival of microorganisms in these areas hinges on their ability to withstand dehydration due to the limited availability of liquid water. Some microorganisms have adapted to survive extended periods of metabolic inactivity and dehydration, a physiological response to the harsh conditions in which they exist. This adaptation is significant for astrobiology studies as it allows for testing the resilience of microorganisms under extraterrestrial conditions, exploring the boundaries and potential for life beyond Earth. In this study, we examined the survivability, metabolic activity, cellular membrane integrity, and ultrastructural damage of Cryomyces antarcticus, a eukaryotic organism used for astrobiological studies, following two dehydration processes. We conducted a fast dehydration process, simulating what happens on the surface of Antarctic rocks under typical environmental conditions, and a slow dehydration process, which is commonly used in astrobiological experiments. Our findings revealed a higher percentage of damaged cells following slow dehydration treatments, confirming that rapid dehydration reflects the adaptability of microorganisms to respond to sudden and drastic changes in the Antarctic environment.
Collapse
Affiliation(s)
- Cassaro Alessia
- Department of Ecological and Biological SciencesUniversity of TusciaViterboItaly
- Department of Biological, Geological and Environmental SciencesUniversity of BolognaBolognaItaly
| | - D' Alò Federica
- Department of Ecological and Biological SciencesUniversity of TusciaViterboItaly
- Institute of Research on Terrestrial EcosystemsNational Research CouncilPorano (TR)Italy
| | - Pacelli Claudia
- Department of Ecological and Biological SciencesUniversity of TusciaViterboItaly
- Human Spaceflight and Scientific Research UnitItalian Space AgencyRomeItaly
| | - Cavalazzi Barbara
- Department of Biological, Geological and Environmental SciencesUniversity of BolognaBolognaItaly
- LE STUDIUM Institute for Advanced StudiesOrléansFrance
| | - Zucconi Laura
- Department of Ecological and Biological SciencesUniversity of TusciaViterboItaly
- Institute of Polar SciencesNational Research Council of Italy (CNR‐ISP)MessinaItaly
| | - Onofri Silvano
- Department of Ecological and Biological SciencesUniversity of TusciaViterboItaly
| |
Collapse
|
5
|
Kang N, Tan J, Yan S, Lin L, Gao Q. General autophagy-dependent and -independent lipophagic processes collaborate to regulate the overall level of lipophagy in yeast. Autophagy 2024; 20:1523-1536. [PMID: 38425021 PMCID: PMC11210923 DOI: 10.1080/15548627.2024.2325297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 02/15/2024] [Accepted: 02/26/2024] [Indexed: 03/02/2024] Open
Abstract
ABBREVIATION AP: autophagosome; ATG: autophagy related; CMA: chaperone-mediated autophagy; ESCRT: endosomal sorting complex required for transport; FA: fatty acid; LD: lipid droplet; Ld microdomains: liquid-disordered microdomains; NL: neutral lipid.
Collapse
Affiliation(s)
- Na Kang
- School of Biomedical Sciences, Hunan University, Changsha, Hunan, China
| | - Jinling Tan
- School of Biomedical Sciences, Hunan University, Changsha, Hunan, China
| | - Sisi Yan
- School of Biomedical Sciences, Hunan University, Changsha, Hunan, China
| | - Leiying Lin
- School of Biomedical Sciences, Hunan University, Changsha, Hunan, China
| | - Qiang Gao
- Hunan Key Laboratory of Animal Models and Molecular Medicine, School of Biomedical Sciences, Hunan University, Changsha, Hunan, China
| |
Collapse
|
6
|
Macke AJ, Divita TE, Pachikov AN, Mahalingam S, Bellamkonda R, Rasineni K, Casey CA, Petrosyan A. Alcohol-induced Golgiphagy is triggered by the downregulation of Golgi GTPase RAB3D. Autophagy 2024; 20:1537-1558. [PMID: 38591519 PMCID: PMC11210917 DOI: 10.1080/15548627.2024.2329476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 02/21/2024] [Accepted: 03/07/2024] [Indexed: 04/10/2024] Open
Abstract
The development of alcohol-associated liver disease (ALD) is associated with disorganized Golgi apparatus and accelerated phagophore formation. While Golgi membranes may contribute to phagophores, association between Golgi alterations and macroautophagy/autophagy remains unclear. GOLGA4/p230 (golgin A4), a dimeric Golgi matrix protein, participates in phagophore formation, but the underlying mechanism is elusive. Our prior research identified ethanol (EtOH)-induced Golgi scattering, disrupting intra-Golgi trafficking and depleting RAB3D GTPase from the trans-Golgi. Employing various techniques, we analyzed diverse cellular and animal models representing chronic and chronic/binge alcohol consumption. In trans-Golgi of non-treated hepatocytes, we found a triple complex formed between RAB3D, GOLGA4, and MYH10/NMIIB (myosin, heavy polypeptide 10, non-muscle). However, EtOH-induced RAB3D downregulation led to MYH10 segregation from the Golgi, accompanied by Golgi fragmentation and tethering of the MYH10 isoform, MYH9/NMIIA, to dispersed Golgi membranes. EtOH-activated autophagic flux is evident through increased WIPI2 recruitment to the Golgi, phagophore formation, enhanced LC3B lipidation, and reduced SQSTM1/p62. Although GOLGA4 dimerization and intra-Golgi localization are unaffected, loss of RAB3D leads to an extension of the cytoplasmic N terminal domain of GOLGA4, forming GOLGA4-positive phagophores. Autophagy inhibition by hydroxychloroquine (HCQ) prevents alcohol-mediated Golgi disorganization, restores distribution of ASGR (asialoglycoprotein receptor), and mitigates COL (collagen) deposition and steatosis. In contrast to short-term exposure to HCQ, extended co-treatment with both EtOH and HCQ results in the depletion of LC3B protein via proteasomal degradation. Thus, (a) RAB3D deficiency and GOLGA4 conformational changes are pivotal in MYH9-driven, EtOH-mediated Golgiphagy, and (b) HCQ treatment holds promise as a therapeutic approach for alcohol-induced liver injury.Abbreviation: ACTB: actin, beta; ALD: alcohol-associated liver disease; ASGR: asialoglycoprotein receptor; AV: autophagic vacuoles; EM: electron microscopy; ER: endoplasmic reticulum; EtOH: ethanol; HCQ: hydroxychloroquine; IP: immunoprecipitation; KD: knockdown; KO: knockout; MYH10/NMIIB: myosin, heavy polypeptide 10, non-muscle; MYH9/NMIIA: myosin, heavy polypeptide 9, non-muscle; PLA: proximity ligation assay; ORO: Oil Red O staining; PM: plasma membrane; TGN: trans-Golgi network; SIM: structured illumination super-resolution microscopy.
Collapse
Affiliation(s)
- Amanda J. Macke
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
- The Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, USA
| | - Taylor E. Divita
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
- The Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, USA
| | - Artem N. Pachikov
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
- The Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, USA
| | - Sundararajan Mahalingam
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
- Omaha Western Iowa Health Care System, VA Service, Department of Research Service, Omaha, NE, USA
| | - Ramesh Bellamkonda
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
- Omaha Western Iowa Health Care System, VA Service, Department of Research Service, Omaha, NE, USA
| | - Karuna Rasineni
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
- Omaha Western Iowa Health Care System, VA Service, Department of Research Service, Omaha, NE, USA
| | - Carol A. Casey
- Omaha Western Iowa Health Care System, VA Service, Department of Research Service, Omaha, NE, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Armen Petrosyan
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
- The Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, USA
| |
Collapse
|
7
|
Huang YZ, Liu Y, Zhu R, Ma X, Xin S, Zhu B, Dong XP. Multi-omics Analysis of Volatile Flavor Components in Pacific Chub and Spanish Mackerel during Freezing using GC-MS-O. Food Chem 2024; 443:138534. [PMID: 38320377 DOI: 10.1016/j.foodchem.2024.138534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 12/15/2023] [Accepted: 01/20/2024] [Indexed: 02/08/2024]
Abstract
This study employed gas chromatography-mass spectrometry with olfactory (GC-MS-O) and multi-omics methods to investigate the changes in volatile flavor compounds during the freezing process of Pacific chub mackerel (Scomber japonicus) from Japan and China, and Spanish mackerel (Scomberomorus niphonius). A total of 18 volatile flavor compounds were identified, and significant differences in volatile flavor components were observed among samples frozen for 1 week, 1 year, and 2 years. The results of the Partial least squares regression (PLSR) indicated that the fishy odor was correlated with independent variables such as fatty acids (FA 22:4, FA 28:6, FA 24:4), differentially expressed genes (Gene.2425 (NDUFA5), Gene.38 (GPX1), and Gene.2844 (DAD1)). Classification and regression tree (CART) analysis revealed that the peak area values of fatty acids (FA 22:5, FA 20:4) and fatty acid esters of hydroxy fatty acids (FAHFA 18:0/22:3) were the main differentiating factors for fishy odor perception.
Collapse
Affiliation(s)
- Yi-Zhen Huang
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China; Academy of Food Interdisciplinary Science, Dalian Technology Innovation Center for Chinese Prepared Food, Dalian Polytechnic University, Dalian 116034, Liaoning, China
| | - Yu Liu
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China; Academy of Food Interdisciplinary Science, Dalian Technology Innovation Center for Chinese Prepared Food, Dalian Polytechnic University, Dalian 116034, Liaoning, China
| | - Rui Zhu
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China; Academy of Food Interdisciplinary Science, Dalian Technology Innovation Center for Chinese Prepared Food, Dalian Polytechnic University, Dalian 116034, Liaoning, China
| | - Xiaoxiao Ma
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China; Academy of Food Interdisciplinary Science, Dalian Technology Innovation Center for Chinese Prepared Food, Dalian Polytechnic University, Dalian 116034, Liaoning, China
| | - Songlin Xin
- Sichuan Tourism University, no.459, Hongling Road, Longquanyi District, Chengdu 610100, Sichuan Province, China
| | - Beiwei Zhu
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China; Academy of Food Interdisciplinary Science, Dalian Technology Innovation Center for Chinese Prepared Food, Dalian Polytechnic University, Dalian 116034, Liaoning, China.
| | - Xiu-Ping Dong
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China; Academy of Food Interdisciplinary Science, Dalian Technology Innovation Center for Chinese Prepared Food, Dalian Polytechnic University, Dalian 116034, Liaoning, China.
| |
Collapse
|
8
|
Yin J, Chen HL, Grigsby-Brown A, He Y, Cotten ML, Short J, Dermady A, Lei J, Gibbs M, Cheng ES, Zhang D, Long C, Xu L, Zhong T, Abzalimov R, Haider M, Sun R, He Y, Zhou Q, Tjandra N, Yuan Q. Glia-derived secretory fatty acid binding protein Obp44a regulates lipid storage and efflux in the developing Drosophila brain. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.10.588417. [PMID: 38645138 PMCID: PMC11030299 DOI: 10.1101/2024.04.10.588417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/23/2024]
Abstract
Glia derived secretory factors play diverse roles in supporting the development, physiology, and stress responses of the central nervous system (CNS). Through transcriptomics and imaging analyses, we have identified Obp44a as one of the most abundantly produced secretory proteins from Drosophila CNS glia. Protein structure homology modeling and Nuclear Magnetic Resonance (NMR) experiments reveal Obp44a as a fatty acid binding protein (FABP) with a high affinity towards long-chain fatty acids in both native and oxidized forms. Further analyses demonstrate that Obp44a effectively infiltrates the neuropil, traffics between neuron and glia, and is secreted into hemolymph, acting as a lipid chaperone and scavenger to regulate lipid and redox homeostasis in the developing brain. In agreement with this essential role, deficiency of Obp44a leads to anatomical and behavioral deficits in adult animals and elevated oxidized lipid levels. Collectively, our findings unveil the crucial involvement of a noncanonical lipid chaperone to shuttle fatty acids within and outside the brain, as needed to maintain a healthy brain lipid environment. These findings could inspire the design of novel approaches to restore lipid homeostasis that is dysregulated in CNS diseases.
Collapse
Affiliation(s)
- Jun Yin
- Dendrite Morphogenesis and Plasticity Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD
| | - Hsueh-Ling Chen
- Dendrite Morphogenesis and Plasticity Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD
| | - Anna Grigsby-Brown
- Dendrite Morphogenesis and Plasticity Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD
| | - Yi He
- Fermentation Facility, Biochemistry and Biophysics Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD
| | - Myriam L Cotten
- Department of Biochemistry and Biophysics, Oregon State University, Corvallis, OR
| | - Jacob Short
- Dendrite Morphogenesis and Plasticity Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD
| | - Aidan Dermady
- Dendrite Morphogenesis and Plasticity Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD
| | - Jingce Lei
- Dendrite Morphogenesis and Plasticity Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD
| | - Mary Gibbs
- Dendrite Morphogenesis and Plasticity Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD
| | - Ethan S Cheng
- Dendrite Morphogenesis and Plasticity Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD
| | - Dean Zhang
- Dendrite Morphogenesis and Plasticity Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD
| | - Caixia Long
- Dendrite Morphogenesis and Plasticity Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD
| | - Lele Xu
- Advanced Science Research Center, The City University of New York, New York, NY
- Ph.D. Program in Biology, The Graduate Center of the City University of New York, New York, NY
| | - Tiffany Zhong
- Neuroscience Program, Princeton University, Princeton, NJ
| | - Rinat Abzalimov
- Advanced Science Research Center, The City University of New York, New York, NY
| | - Mariam Haider
- Department of Cell and Developmental Biology, Vanderbilt Brain Institute, Center for Structural Biology, Vanderbilt Kennedy Center, Vanderbilt University, Nashville, TN
| | - Rong Sun
- Department of Cell and Developmental Biology, Vanderbilt Brain Institute, Center for Structural Biology, Vanderbilt Kennedy Center, Vanderbilt University, Nashville, TN
| | - Ye He
- Advanced Science Research Center, The City University of New York, New York, NY
- Ph.D. Program in Biology, The Graduate Center of the City University of New York, New York, NY
| | - Qiangjun Zhou
- Department of Cell and Developmental Biology, Vanderbilt Brain Institute, Center for Structural Biology, Vanderbilt Kennedy Center, Vanderbilt University, Nashville, TN
| | - Nico Tjandra
- Laboratory of Molecular Biophysics, Biochemistry and Biophysics Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD
| | - Quan Yuan
- Dendrite Morphogenesis and Plasticity Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD
| |
Collapse
|
9
|
Peng K, Cui K, Li P, Liu X, Du Y, Xu H, Yang X, Lu S, Liang X. Mogroside V alleviates the heat stress-induced disruption of the porcine oocyte in vitro maturation. Theriogenology 2024; 217:37-50. [PMID: 38244353 DOI: 10.1016/j.theriogenology.2024.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 01/05/2024] [Accepted: 01/06/2024] [Indexed: 01/22/2024]
Abstract
Heat stress (HS) is a stressor that negatively affect female reproduction. Specially, oocytes are very sensitive to HS. It has been demonstrated that some active compounds can protect oocyte from HS. We previously found that Mogroside V (MV), extracted from Siraitia grosvenorii (Luo Han Guo), can protect oocyte from many kinds of stresses. However, how MV alleviates HS-induced disruption of oocyte maturation remains unknown. In this study, we treated the HS-induced porcine oocytes with MV to examine their maturation and quality. Our findings demonstrate that MV can effectively alleviate HS-induced porcine oocyte abnormal cumulus cell expansion, decrease of first polar body extrusion rate, spindle assembly and chromosome separation abnormalities, indicating MV attenuates oocyte mature defects. We further observed that MV can effectively alleviate HS-induced cortical granule distribution abnormality and decrease of blastocyst formation rate after parthenogenesis activation. In addition, MV treatment reversed mitochondrial dysfunction and lipid droplet content decrease, reduced reactive oxygen species levels, early apoptosis and DNA damage in porcine oocytes after HS. Collectively, this study suggests that MV can effectively protect porcine oocytes from HS.
Collapse
Affiliation(s)
- Ke Peng
- College of Animal Science & Technology, Guangxi University, Nanning, Guangxi 530004, China; Guangxi Key Laboratory of Animal Breeding & Disease Control and Prevention, Guangxi University, Nanning, Guangxi 530004, China
| | - Kexin Cui
- College of Animal Science & Technology, Guangxi University, Nanning, Guangxi 530004, China; Guangxi Key Laboratory of Animal Breeding & Disease Control and Prevention, Guangxi University, Nanning, Guangxi 530004, China
| | - Pan Li
- College of Animal Science & Technology, Guangxi University, Nanning, Guangxi 530004, China; Guangxi Key Laboratory of Animal Breeding & Disease Control and Prevention, Guangxi University, Nanning, Guangxi 530004, China
| | - Xinxin Liu
- College of Animal Science & Technology, Guangxi University, Nanning, Guangxi 530004, China; Guangxi Key Laboratory of Animal Breeding & Disease Control and Prevention, Guangxi University, Nanning, Guangxi 530004, China
| | - Ya Du
- College of Animal Science & Technology, Guangxi University, Nanning, Guangxi 530004, China; Guangxi Key Laboratory of Animal Breeding & Disease Control and Prevention, Guangxi University, Nanning, Guangxi 530004, China
| | - Huiyan Xu
- College of Animal Science & Technology, Guangxi University, Nanning, Guangxi 530004, China; Guangxi Key Laboratory of Animal Breeding & Disease Control and Prevention, Guangxi University, Nanning, Guangxi 530004, China
| | - Xiaogan Yang
- College of Animal Science & Technology, Guangxi University, Nanning, Guangxi 530004, China; Guangxi Key Laboratory of Animal Breeding & Disease Control and Prevention, Guangxi University, Nanning, Guangxi 530004, China
| | - Shengsheng Lu
- College of Animal Science & Technology, Guangxi University, Nanning, Guangxi 530004, China; Guangxi Key Laboratory of Animal Breeding & Disease Control and Prevention, Guangxi University, Nanning, Guangxi 530004, China
| | - Xingwei Liang
- College of Animal Science & Technology, Guangxi University, Nanning, Guangxi 530004, China; Guangxi Key Laboratory of Animal Breeding & Disease Control and Prevention, Guangxi University, Nanning, Guangxi 530004, China.
| |
Collapse
|
10
|
Sood C, Verma JK, Basak R, Kapoor A, Gupta S, Mukhopadhyay A. Leishmania highjack host lipid body for its proliferation in macrophages by overexpressing host Rab18 and TRAPPC9 by downregulating miR-1914-3p expression. PLoS Pathog 2024; 20:e1012024. [PMID: 38412149 PMCID: PMC10898768 DOI: 10.1371/journal.ppat.1012024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Accepted: 02/05/2024] [Indexed: 02/29/2024] Open
Abstract
Lipids stored in lipid-bodies (LBs) in host cells are potential sources of fatty acids for pathogens. However, the mechanism of recruitment of LBs from the host cells by pathogens to acquire fatty acids is not known. Here, we have found that Leishmania specifically upregulates the expression of host Rab18 and its GEF, TRAPPC9 by downregulating the expression of miR-1914-3p by reducing the level of Dicer in macrophages via their metalloprotease gp63. Our results also show that miR-1914-3p negatively regulates the expression of Rab18 and its GEF in cells. Subsequently, Leishmania containing parasitophorous vacuoles (Ld-PVs) recruit and retain host Rab18 and TRAPPC9. Leishmania infection also induces LB biogenesis in host cells and recruits LBs on Ld-PVs and acquires FLC12-labeled fatty acids from LBs. Moreover, overexpression of miR-1914-3p in macrophages significantly inhibits the recruitment of LBs and thereby suppresses the multiplication of parasites in macrophages as parasites are unable to acquire fatty acids. These results demonstrate a novel mechanism how Leishmania acquire fatty acids from LBs for their growth in macrophages.
Collapse
Affiliation(s)
- Chandni Sood
- National Institute of Immunology, New Delhi, India
| | - Jitender Kumar Verma
- Kusuma School of Biological Sciences, Indian Institute of Technology, Hauz Khas, New Delhi, India
- National Institute of Immunology, New Delhi, India
| | - Rituparna Basak
- Kusuma School of Biological Sciences, Indian Institute of Technology, Hauz Khas, New Delhi, India
| | - Anjali Kapoor
- Kusuma School of Biological Sciences, Indian Institute of Technology, Hauz Khas, New Delhi, India
| | - Swarnima Gupta
- Kusuma School of Biological Sciences, Indian Institute of Technology, Hauz Khas, New Delhi, India
| | - Amitabha Mukhopadhyay
- Kusuma School of Biological Sciences, Indian Institute of Technology, Hauz Khas, New Delhi, India
- National Institute of Immunology, New Delhi, India
| |
Collapse
|
11
|
Xiong WJ, Lai XL, Lu J, Li LS, Zhang JX, Duan X. O-GlcNAcylation orchestrates porcine oocyte maturation through maintaining mitochondrial dynamics and function. Mol Hum Reprod 2024; 30:gaae003. [PMID: 38265252 DOI: 10.1093/molehr/gaae003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 12/24/2023] [Indexed: 01/25/2024] Open
Abstract
O-linked β-N-acetylglucosamine (O-GlcNAc) modification exists widely in cells, playing a crucial role in the regulation of important biological processes such as transcription, translation, metabolism, and the cell cycle. O-GlcNAc modification is an inducible reversible dynamic protein post-translational modification, which regulates complex cellular activities through transient glycosylation and deglycosylation. O-GlcNAc glycosylation is specifically regulated by O-GlcNAc glycosyltransferase (O-GlcNAc transferase, OGT) and O-GlcNAc glycoside hydrolase (O-GlcNAcase). However, the mechanisms underlying the effects of O-GlcNAc modification on the female reproductive system, especially oocyte quality, remain unclear. Here, we found that after OGT was inhibited, porcine oocytes failed to extrude the first polar body and exhibited abnormal actin and microtubule assembly. Meanwhile, the mitochondrial dynamics and function were also disrupted after inhibition of OGT function, resulting in the occurrence of oxidative stress and autophagy. Collectively, these results inform our understanding of the importance of the glycosylation process for oocyte maturation, especially for the maturation quality of porcine oocytes, and the alteration of O-GlcNAc in oocytes to regulate cellular events deserves further investigation.
Collapse
Affiliation(s)
- Wen-Jie Xiong
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, College of Animal Science and Technology & College of Veterinary Medicine, Zhejiang A&F University, Hangzhou, China
| | - Xin-Le Lai
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, College of Animal Science and Technology & College of Veterinary Medicine, Zhejiang A&F University, Hangzhou, China
| | - Jie Lu
- Department of Cardiovascular Surgery, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Li-Shu Li
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, College of Animal Science and Technology & College of Veterinary Medicine, Zhejiang A&F University, Hangzhou, China
| | - Jin-Xin Zhang
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, College of Animal Science and Technology & College of Veterinary Medicine, Zhejiang A&F University, Hangzhou, China
| | - Xing Duan
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, College of Animal Science and Technology & College of Veterinary Medicine, Zhejiang A&F University, Hangzhou, China
| |
Collapse
|
12
|
Du W, Gu Y, Zhou X, Wang Z, Wang S. Rational design and comparison of three curcumin-based fluorescent probes for viscosity detection in living cells and zebrafish. Analyst 2024; 149:789-799. [PMID: 38113057 DOI: 10.1039/d3an01837g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
Viscosity is a crucial indicator of the cellular microenvironment, which can affect the normal level of cellular metabolism. Aberrant levels of viscosity can result in the emergence of a variety of physiological problems including diabetes, Parkinson's disease, inflammation, etc. Therefore, it is crucial to exploit effective assays that can detect viscosity levels in living cells and organisms. Three new nitrogen-containing heterocyclic fluorescent probes, CNO, CNN and CNNB, were designed and prepared by coupling curcumin with isoxazole, pyrazole, and phenylpyrazole rings, respectively. The fluorescence response properties of these probes to the viscosity level were analyzed in parallel. All the probes, CNO, CNN and CNNB, exhibited a significantly enhanced fluorescence response to viscosity in a broad pH range with excellent photostability, sensitivity and anti-interference ability. The sensing mechanisms of these probes for viscosity were verified by DFT calculations. In addition, these probes were successfully employed for detecting viscosity levels in living HeLa cells and zebrafish. This research compares the viscosity-responsive capabilities of curcumin-based fluorescent probes containing different nitrogen-containing heterocyclic structures, and provides a new design strategy and guidance for developing curcumin-based fluorescent probes for viscosity analysis.
Collapse
Affiliation(s)
- Wenhao Du
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China.
| | - Yue Gu
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China.
| | - Xin Zhou
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China.
| | - Zhonglong Wang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China.
| | - Shifa Wang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China.
| |
Collapse
|
13
|
Yuan Z, Cai K, Li J, Chen R, Zhang F, Tan X, Jiu Y, Chang H, Hu B, Zhang W, Ding B. ATG14 targets lipid droplets and acts as an autophagic receptor for syntaxin18-regulated lipid droplet turnover. Nat Commun 2024; 15:631. [PMID: 38245527 PMCID: PMC10799895 DOI: 10.1038/s41467-024-44978-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 01/09/2024] [Indexed: 01/22/2024] Open
Abstract
Lipid droplets (LDs) are dynamic lipid storage organelles that can be degraded by autophagy machinery to release neutral lipids, a process called lipophagy. However, specific receptors and regulation mechanisms for lipophagy remain largely unknown. Here, we identify that ATG14, the core unit of the PI3KC3-C1 complex, also targets LD and acts as an autophagic receptor that facilitates LD degradation. A negative regulator, Syntaxin18 (STX18) binds ATG14, disrupting the ATG14-ATG8 family members interactions and subverting the PI3KC3-C1 complex formation. Knockdown of STX18 activates lipophagy dependent on ATG14 not only as the core unit of PI3KC3-C1 complex but also as the autophagic receptor, resulting in the degradation of LD-associated anti-viral protein Viperin. Furthermore, coronavirus M protein binds STX18 and subverts the STX18-ATG14 interaction to induce lipophagy and degrade Viperin, facilitating virus production. Altogether, our data provide a previously undescribed mechanism for additional roles of ATG14 in lipid metabolism and virus production.
Collapse
Affiliation(s)
- Zhen Yuan
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Kun Cai
- Institute of Health Inspection and Testing, Hubei Provincial Center for Disease Control and Prevention, Wuhan, Hubei, 430079, China
| | - Jiajia Li
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Ruifeng Chen
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Fuhai Zhang
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Xuan Tan
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Yaming Jiu
- Unit of Cell Biology and Imaging Study of Pathogen Host Interaction, The Center for Microbes, Development and Health, Key Laboratory of Molecular Virology and Immunology, Shanghai Institute of Immunity and Infection, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Haishuang Chang
- Shanghai Institute of Precision Medicine, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Bing Hu
- Institute of Health Inspection and Testing, Hubei Provincial Center for Disease Control and Prevention, Wuhan, Hubei, 430079, China
| | - Weiyi Zhang
- Department of Applied Biology, College of Natural Resources and Life Science, Dong-A University, Busan, 49315, Republic of Korea
| | - Binbin Ding
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China.
- Cell Architecture Research Institute, Huazhong University of Science and Technology, Wuhan, Hubei, China.
- Guangzhou National Laboratory; State Key Laboratory of Respiratory Disease, Guangzhou, Guangzhou, Guangdong, 510000, China.
| |
Collapse
|
14
|
Zhao T, Tan XY, Pantopoulos K, Xu JJ, Zheng H, Xu YC, Song YF, Luo Z. miR-20a-5p targeting mfn2-mediated mitochondria-lipid droplet contacts regulated differential changes in hepatic lipid metabolism induced by two Mn sources in yellow catfish. JOURNAL OF HAZARDOUS MATERIALS 2024; 462:132749. [PMID: 37871441 DOI: 10.1016/j.jhazmat.2023.132749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 10/05/2023] [Accepted: 10/07/2023] [Indexed: 10/25/2023]
Abstract
Understanding the hazards of different forms of metal elements provided innovative insights into their toxicity and environmental risk assessment. To date, few studies had been conducted to investigate the differential effects and mechanisms of MnO2 NPs and MnSO4, two widely distributed environmental pollutants, on hepatic toxicity and lipid metabolism since lipid metabolism-relevant parameters were broadly used as biomarkers for risk assessment of hazardous contaminants. Thus, using yellow catfish Pelteobagrus fulvidraco, an ecologically and economically important freshwater fish as the model, the present study investigated the differential effects and mechanisms of MnO2 NPs and MnSO4 influencing hepatic lipid metabolism. Compared to MnSO4, MnO2 NPs increased hepatic Mn content, induced lipotoxicity, up-regulated the mRNA expression of lipogenic genes, increased peridroplet mitochondrial (PDM) contents, intensified the contact between mitochondria and lipid droplets (LDs), and downregulated miR-20a-5p abundance. Importantly, miR-20a-5p targeted mfn2, which mediated the contact between mitochondria and LDs and influenced changes in lipid metabolism induced by MnO2 NPs. Mechanistically, the direct Mfn2-Plin2 binding and Mfn2 GTPase activity promoted the MnO2 NPs-induced interactions between mitochondria and LDs, which in turn influenced MnO2 NPs-induced changes in hepatic lipid metabolism. For the first time, our findings indicated the significant differences between the changes in body metabolism induced by nanoparticles and inorganic elements, which helped to illuminate different mechanisms governing the responses of aquatic vertebrates to hazardous metal pollutants (MnO2 NPs and MnSO4).
Collapse
Affiliation(s)
- Tao Zhao
- Hubei Hongshan Laboratory, Fishery College, Huazhong Agricultural University, Wuhan 430070, China
| | - Xiao-Ying Tan
- Hubei Hongshan Laboratory, Fishery College, Huazhong Agricultural University, Wuhan 430070, China
| | - Kostas Pantopoulos
- Lady Davis Institute for Medical Research and Department of Medicine, McGill University, Montreal, Quebec H3T1E2, Canada
| | - Jie-Jie Xu
- Hubei Hongshan Laboratory, Fishery College, Huazhong Agricultural University, Wuhan 430070, China
| | - Hua Zheng
- Hubei Hongshan Laboratory, Fishery College, Huazhong Agricultural University, Wuhan 430070, China
| | - Yi-Chuang Xu
- Hubei Hongshan Laboratory, Fishery College, Huazhong Agricultural University, Wuhan 430070, China
| | - Yu-Feng Song
- Hubei Hongshan Laboratory, Fishery College, Huazhong Agricultural University, Wuhan 430070, China
| | - Zhi Luo
- Hubei Hongshan Laboratory, Fishery College, Huazhong Agricultural University, Wuhan 430070, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China.
| |
Collapse
|
15
|
Mukherjee S, Schäfer LV. Thermodynamic forces from protein and water govern condensate formation of an intrinsically disordered protein domain. Nat Commun 2023; 14:5892. [PMID: 37735186 PMCID: PMC10514047 DOI: 10.1038/s41467-023-41586-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 09/08/2023] [Indexed: 09/23/2023] Open
Abstract
Liquid-liquid phase separation (LLPS) can drive a multitude of cellular processes by compartmentalizing biological cells via the formation of dense liquid biomolecular condensates, which can function as membraneless organelles. Despite its importance, the molecular-level understanding of the underlying thermodynamics of this process remains incomplete. In this study, we use atomistic molecular dynamics simulations of the low complexity domain (LCD) of human fused in sarcoma (FUS) protein to investigate the contributions of water and protein molecules to the free energy changes that govern LLPS. Both protein and water components are found to have comparably sizeable thermodynamic contributions to the formation of FUS condensates. Moreover, we quantify the counteracting effects of water molecules that are released into the bulk upon condensate formation and the waters retained within the protein droplets. Among the various factors considered, solvation entropy and protein interaction enthalpy are identified as the most important contributions, while solvation enthalpy and protein entropy changes are smaller. These results provide detailed molecular insights on the intricate thermodynamic interplay between protein- and solvation-related forces underlying the formation of biomolecular condensates.
Collapse
Affiliation(s)
- Saumyak Mukherjee
- Center for Theoretical Chemistry, Ruhr University Bochum, D-44780, Bochum, Germany
| | - Lars V Schäfer
- Center for Theoretical Chemistry, Ruhr University Bochum, D-44780, Bochum, Germany.
| |
Collapse
|
16
|
Delmas D, Cotte AK, Connat JL, Hermetet F, Bouyer F, Aires V. Emergence of Lipid Droplets in the Mechanisms of Carcinogenesis and Therapeutic Responses. Cancers (Basel) 2023; 15:4100. [PMID: 37627128 PMCID: PMC10452604 DOI: 10.3390/cancers15164100] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/04/2023] [Accepted: 08/09/2023] [Indexed: 08/27/2023] Open
Abstract
Cancer shares common risk factors with cardiovascular diseases such as dyslipidemia, obesity and inflammation. In both cases, dysregulations of lipid metabolism occur, and lipid vesicles emerge as important factors that can influence carcinogenesis. In this review, the role of different lipids known to be involved in cancer and its response to treatments is detailed. In particular, lipid droplets (LDs), initially described for their role in lipid storage, exert multiple functions, from the physiological prevention of LD coalescence and regulation of endoplasmic reticulum homeostasis to pathological involvement in tumor progression and aggressiveness. Analysis of LDs highlights the importance of phosphatidylcholine metabolism and the diversity of lipid synthesis enzymes. In many cancers, the phosphatidylcholine pathways are disrupted, modifying the expression of genes coding for metabolic enzymes. Tumor microenvironment conditions, such as hypoxia, different types of stress or inflammatory conditions, are also important determinants of LD behavior in cancer cells. Therefore, LDs represent therapeutic targets in cancer, and many lipid mediators have emerged as potential biomarkers for cancer onset, progression, and/or resistance.
Collapse
Affiliation(s)
- Dominique Delmas
- UFR of Heatlh Sciences, Université de Bourgogne, 21000 Dijon, France; (A.K.C.); (J.-L.C.); (F.H.); (F.B.); (V.A.)
- INSERM Research Center U1231—Bioactive Molecules and Health Research Group, Cancer and Adaptive Immune Response Team, 21000 Dijon, France
- Centre de Lutte Contre le Cancer Georges François Leclerc, 21000 Dijon, France
| | - Alexia K. Cotte
- UFR of Heatlh Sciences, Université de Bourgogne, 21000 Dijon, France; (A.K.C.); (J.-L.C.); (F.H.); (F.B.); (V.A.)
- INSERM Research Center U1231—Bioactive Molecules and Health Research Group, Cancer and Adaptive Immune Response Team, 21000 Dijon, France
| | - Jean-Louis Connat
- UFR of Heatlh Sciences, Université de Bourgogne, 21000 Dijon, France; (A.K.C.); (J.-L.C.); (F.H.); (F.B.); (V.A.)
- INSERM Research Center U1231—Bioactive Molecules and Health Research Group, Cancer and Adaptive Immune Response Team, 21000 Dijon, France
| | - François Hermetet
- UFR of Heatlh Sciences, Université de Bourgogne, 21000 Dijon, France; (A.K.C.); (J.-L.C.); (F.H.); (F.B.); (V.A.)
- INSERM Research Center U1231—Bioactive Molecules and Health Research Group, Cancer and Adaptive Immune Response Team, 21000 Dijon, France
| | - Florence Bouyer
- UFR of Heatlh Sciences, Université de Bourgogne, 21000 Dijon, France; (A.K.C.); (J.-L.C.); (F.H.); (F.B.); (V.A.)
- INSERM Research Center U1231—Bioactive Molecules and Health Research Group, Cancer and Adaptive Immune Response Team, 21000 Dijon, France
| | - Virginie Aires
- UFR of Heatlh Sciences, Université de Bourgogne, 21000 Dijon, France; (A.K.C.); (J.-L.C.); (F.H.); (F.B.); (V.A.)
- INSERM Research Center U1231—Bioactive Molecules and Health Research Group, Cancer and Adaptive Immune Response Team, 21000 Dijon, France
| |
Collapse
|
17
|
Bisogno S, Gąsior Ł, Ptak GE. Nile Red and BODIPY Staining of Lipid Droplets in Mouse Oocytes and Embryos. Methods Mol Biol 2023; 2566:205-212. [PMID: 36152253 DOI: 10.1007/978-1-0716-2675-7_16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Lipid droplets (LDs) are intracellular structures composed of hydrophobic lipids. Their amount in oocytes and embryos varies among the mammalian species and even among different strains of the same species. Here we describe a method to stain LDs, which can be applied to previously fixed mouse oocytes and embryos. This method is based on fluorescent dyes, Nile red and BODIPY, which allow visualization and quantification of LDs using conventional and confocal fluorescence microscopy.
Collapse
Affiliation(s)
- Simona Bisogno
- Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland
| | - Łukasz Gąsior
- Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland
| | - Grażyna E Ptak
- Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland.
| |
Collapse
|
18
|
Zhang E. Hepatic PLIN5 Deficiency Impairs Lipogenesis through Mitochondrial Dysfunction. Int J Mol Sci 2022; 23:15598. [PMID: 36555245 PMCID: PMC9779494 DOI: 10.3390/ijms232415598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/01/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022] Open
Abstract
Regulation of lipid droplets (LDs) metabolism is the core of controlling intracellular fatty acids (FAs) fluxes, and perilipin 5 (PLIN5) plays a key role in this process. Our previous studies have found that hepatic PLIN5 deficiency reduces LDs accumulation, but the trafficking of FAs produced from this pathway and the interaction between mitochondria and LDs in this process are largely unknown. Here, we found that the deficiency of PLIN5 decreases LDs accumulation by increasing FAs efflux. In addition, the decreased lipogenesis of PLIN5-deficient hepatocytes is accompanied by mitochondrial dysfunction, suggesting that PLIN5 plays an important role in mediating the interaction between LDs and mitochondria. Importantly, PLIN5 ablation negates oxidative capacity differences of peri-droplet and cytosolic mitochondria. In summary, these data indicate that PLIN5 plays a vital role in maintaining mitochondrial-mediated lipogenesis, which provides an important new perspective on the regulation of liver lipid storage and the relationship between PLIN5 and mitochondria.
Collapse
Affiliation(s)
- Enxiang Zhang
- Key Laboratory of Growth Regulation and Transformation Research of Zhejiang Province, School of Life Sciences, Westlake Institute for Advanced Study, Westlake University, Hangzhou 310024, China;
- Department of Cell Biology, Duke University Medical Center, Durham, NC 27710, USA
- Duke Regeneration Center, Duke University Medical Center, Durham, NC 27710, USA
| |
Collapse
|
19
|
Kleiboeker B, Lodhi IJ. Peroxisomal regulation of energy homeostasis: Effect on obesity and related metabolic disorders. Mol Metab 2022; 65:101577. [PMID: 35988716 PMCID: PMC9442330 DOI: 10.1016/j.molmet.2022.101577] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 08/01/2022] [Accepted: 08/16/2022] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND Peroxisomes are single membrane-bound organelles named for their role in hydrogen peroxide production and catabolism. However, their cellular functions extend well beyond reactive oxygen species (ROS) metabolism and include fatty acid oxidation of unique substrates that cannot be catabolized in mitochondria, and synthesis of ether lipids and bile acids. Metabolic functions of peroxisomes involve crosstalk with other organelles, including mitochondria, endoplasmic reticulum, lipid droplets and lysosomes. Emerging studies suggest that peroxisomes are important regulators of energy homeostasis and that disruption of peroxisomal functions influences the risk for obesity and the associated metabolic disorders, including type 2 diabetes and hepatic steatosis. SCOPE OF REVIEW Here, we focus on the role of peroxisomes in ether lipid synthesis, β-oxidation and ROS metabolism, given that these functions have been most widely studied and have physiologically relevant implications in systemic metabolism and obesity. Efforts are made to mechanistically link these cellular and systemic processes. MAJOR CONCLUSIONS Circulating plasmalogens, a form of ether lipids, have been identified as inversely correlated biomarkers of obesity. Ether lipids influence metabolic homeostasis through multiple mechanisms, including regulation of mitochondrial morphology and respiration affecting brown fat-mediated thermogenesis, and through regulation of adipose tissue development. Peroxisomal β-oxidation also affects metabolic homeostasis through generation of signaling molecules, such as acetyl-CoA and ROS that inhibit hydrolysis of stored lipids, contributing to development of hepatic steatosis. Oxidative stress resulting from increased peroxisomal β-oxidation-generated ROS in the context of obesity mediates β-cell lipotoxicity. A better understanding of the roles peroxisomes play in regulating and responding to obesity and its complications will provide new opportunities for their treatment.
Collapse
Affiliation(s)
- Brian Kleiboeker
- Division of Endocrinology, Metabolism & Lipid Research, Washington University School of Medicine, St. Louis, MO 63110 USA
| | - Irfan J Lodhi
- Division of Endocrinology, Metabolism & Lipid Research, Washington University School of Medicine, St. Louis, MO 63110 USA.
| |
Collapse
|
20
|
Huang S, Liu Z, Cao W, Li H, Zhang W, Cui Y, Hu S, Luo M, Zhu Y, Zhao Q, Xie L, Gao C, Xiao S, Jiang L. The plant ESCRT component FREE1 regulates peroxisome-mediated turnover of lipid droplets in germinating Arabidopsis seedlings. THE PLANT CELL 2022; 34:4255-4273. [PMID: 35775937 PMCID: PMC9614499 DOI: 10.1093/plcell/koac195] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 06/20/2022] [Indexed: 05/28/2023]
Abstract
Lipid droplets (LDs) stored during seed development are mobilized and provide essential energy and lipids to support seedling growth upon germination. Triacylglycerols (TAGs) are the main neutral lipids stored in LDs. The lipase SUGAR DEPENDENT 1 (SDP1), which hydrolyzes TAGs in Arabidopsis thaliana, is localized on peroxisomes and traffics to the LD surface through peroxisomal extension, but the underlying mechanism remains elusive. Here, we report a previously unknown function of a plant-unique endosomal sorting complex required for transport (ESCRT) component FYVE DOMAIN PROTEIN REQUIRED FOR ENDOSOMAL SORTING 1 (FREE1) in regulating peroxisome/SDP1-mediated LD turnover in Arabidopsis. We showed that LD degradation was impaired in germinating free1 mutant; moreover, the tubulation of SDP1- or PEROXIN 11e (PEX11e)-marked peroxisomes and the migration of SDP1-positive peroxisomes to the LD surface were altered in the free1 mutant. Electron tomography analysis showed that peroxisomes failed to form tubules to engulf LDs in free1, unlike in the wild-type. FREE1 interacted directly with both PEX11e and SDP1, suggesting that these interactions may regulate peroxisomal extension and trafficking of the lipase SDP1 to LDs. Taken together, our results demonstrate a pivotal role for FREE1 in LD degradation in germinating seedlings via regulating peroxisomal tubulation and SDP1 targeting.
Collapse
Affiliation(s)
- Shuxian Huang
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, China
| | - Zhiqi Liu
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, China
| | - Wenhan Cao
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, China
| | - Hongbo Li
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University (SCNU), Guangzhou, 510631, China
| | - Wenxin Zhang
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, China
| | - Yong Cui
- School of Life Sciences, State Key Laboratory of Cellular Stress Biology, Xiamen University, Xiamen, 361102, China
| | - Shuai Hu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, China
| | - Mengqian Luo
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, China
| | - Ying Zhu
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, China
| | - Qiong Zhao
- School of Life Sciences, East China Normal University, Shanghai, 200062, China
| | - Lijuan Xie
- College of Plant Protection, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, 510642, China
| | - Caiji Gao
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University (SCNU), Guangzhou, 510631, China
| | - Shi Xiao
- School of Life Sciences, State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, Sun Yat-sen University, Guangzhou, 510275, China
| | | |
Collapse
|
21
|
Bonatto D. The multiple roles of lipid metabolism in yeast physiology during beer fermentation. Genet Mol Biol 2022; 45:e20210325. [PMID: 36149459 PMCID: PMC9511687 DOI: 10.1590/1678-4685-gmb-2021-0325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 07/17/2022] [Indexed: 11/21/2022] Open
Abstract
The ability of brewing yeasts (Saccharomyces cerevisiae and Saccharomyces pastorianus) to cope with the toxic effects of ethanol during beer fermentation depends on the modulation of lipid and lipid droplets (LDs) biosynthesis, which affects membrane fluidity. However, it has been demonstrated that lipids and LDs can modulate different biological mechanisms associated to ethanol tolerance, including proteostasis and autophagy, leading to the hypothesis that lipid and LDs biosynthesis are integrative processes necessary for ethanol tolerance in yeast. Supporting this hypothesis, a transcriptome and systems biology analyses indicated the upregulation of autophagy, lipid biosynthesis, and proteostasis (ALP)-associated genes in lager yeast during beer fermentation, whose respective proteins interact in a shortest-pathway ALP network. These results indicated a cross-communication between various pathways linked to inter-organelle autophagy, lipid metabolism, and proteostasis (ALP) during lager beer fermentation, thus highlighting the importance of lipids for beer fermentation.
Collapse
Affiliation(s)
- Diego Bonatto
- Universidade Federal do Rio Grande do Sul, Centro de Biotecnologia da UFRGS, Laboratório de Biologia Molecular e Computacional, Departamento de Biologia Molecular e Biotecnologia, Porto Alegre, RS, Brazil
| |
Collapse
|
22
|
Jung Y, Jin JH, Kim Y, Oh JH, Moon H, Jeong H, Kim J, Park YK, Oh Y, Park S, Kim D. Development of a fluorescent nanoprobe based on an amphiphilic single-benzene-based fluorophore for lipid droplet detection and its practical applications. Org Biomol Chem 2022; 20:5423-5433. [PMID: 35758412 DOI: 10.1039/d2ob00830k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lipid droplets (LDs) are crucial biological organelles connected with metabolic pathways in biological systems and diseases. To monitor the locations and accumulation of LDs in lipid-related diseases, the development of a visualization tool for LDs has gained importance. In particular, LD visualization using fluorescent probes has gained attention. Herein, a new fluorescent nanoprobe, BMeS-Ali, is developed that can sense LDs based on an amphiphilic single benzene-based fluorophore (SBBF). BMeS-Ali consists of hydrophilic (-NH2) and hydrophobic (-C12H25) moieties and exists as a micelle nanostructure in aqueous media. BMeS-Ali has a weak fluorescence, but its emission was dramatically enhanced upon exposure to the LD components such as oleic acids (OA) by reassembling its nano-formulation. BMeS-Ali showed a selective LD staining ability and great biocompatibility in cells (cancer cells and stem cells). It also showed a practical sensing ability towards biologically derived lipids and can be applied to the visualization of human fingerprints. We found that the nanoprobe BMeS-Ali has significant potential to serve as a practical dye and sensor for lipids, especially for LD imaging in the biomedical research area and broader industrial applications.
Collapse
Affiliation(s)
- Yuna Jung
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea.
| | - Ji Hye Jin
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea.
| | - Youngseo Kim
- Department of Chemistry, Korea University, Seoul, 02841, Republic of Korea
| | - Ji Hyeon Oh
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea.
| | - Heechang Moon
- Department of Biomedical Science, Graduate School of Biomedical Science and Engineering, Hanyang University, Seoul 04763, Korea
| | - Huisu Jeong
- Department of Biomedical Science, Graduate School of Biomedical Science and Engineering, Hanyang University, Seoul 04763, Korea
| | - Jaehoon Kim
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea.
| | - Yoon Kyung Park
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea.
| | - Yohan Oh
- Department of Biomedical Science, Graduate School of Biomedical Science and Engineering, Hanyang University, Seoul 04763, Korea.,Department of Biochemistry and Molecular Biology, College of Medicine, Hanyang University, Seoul 04763, Korea
| | - Sungnam Park
- Department of Chemistry, Korea University, Seoul, 02841, Republic of Korea
| | - Dokyoung Kim
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea. .,Medical Research Center for Bioreaction to Reactive Oxygen Species and Biomedical Science Institute, Kyung Hee University, Seoul 02447, Republic of Korea.,Department of Anatomy and Neurobiology, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea.,Center for Converging Humanities, Kyung Hee University, Seoul 02447, Republic of Korea.,KHU-KIST Department of Converging Science and Technology, Kyung Hee University, Seoul 02447, Republic of Korea
| |
Collapse
|
23
|
Varma SC, Rajput AS, Kumar A. Rheocoalescence: Relaxation Time through Coalescence of Droplets. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00249] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sarath Chandra Varma
- Department of Mechanical Engineering, Indian Institute of Science, Bangalore 560012, India
| | - Abhineet Singh Rajput
- Department of Mechanical Engineering, Indian Institute of Science, Bangalore 560012, India
| | - Aloke Kumar
- Department of Mechanical Engineering, Indian Institute of Science, Bangalore 560012, India
| |
Collapse
|
24
|
Septin 9 and phosphoinositides regulate lysosome localization and their association with lipid droplets. iScience 2022; 25:104288. [PMID: 35573204 PMCID: PMC9097704 DOI: 10.1016/j.isci.2022.104288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 12/21/2021] [Accepted: 04/20/2022] [Indexed: 11/23/2022] Open
Abstract
The accumulation of lipid droplets (LDs) in the liver is a hallmark of steatosis, which is often associated with lysosomal dysfunction. Nevertheless, the underlying mechanisms remain unclear. Here, using Huh7 cells loaded with oleate as a model to study LD metabolism, we show that cellular content and distribution of LDs are correlated with those of the lysosome and regulated by oleate and septin 9. High expression of septin 9 promotes perinuclear clustering of lysosomes which co-localized with Golgi and not with their surrounding LDs. On the other hand, knockdown of septin 9 disperses the two organelles which colocalize at the cell periphery. The Rab7 is present around these peripheral LDs. PtdIns5P which binds septin 9 and MTMR3 which converts PtdIns(3,5)P2 into PtdIns(5) recapitulates the effects of septin 9. By contrast, PtdIns(3,5)P2 promotes LD/lysosome co-localization. Overall, our data reveal a phosphoinositide/septin 9-dependent mechanism that regulates LD behavior through the control of their association with lysosomes. Septin 9 is regulates oleate-induced lysosome perinuclear clustering Septin 9 and MTs regulate oleate-induced lysosome co-localization with Golgi LDs with high septin 9 have less interaction with Rab7 and LAMP1 PIs have specific effects on LD and lysosome
Collapse
|
25
|
Ma L, Li DH, Xu Z. HECTD2 Represses Cell Proliferation in Colorectal Cancer through Driving Ubiquitination and Degradation of LPCAT1. Mol Biol 2022. [DOI: 10.1134/s0026893322040070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
26
|
Pino-de la Fuente F, Bórquez JC, Díaz-Castro F, Espinosa A, Chiong M, Troncoso R. Exercise regulation of hepatic lipid droplet metabolism. Life Sci 2022; 298:120522. [PMID: 35367244 DOI: 10.1016/j.lfs.2022.120522] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 03/16/2022] [Accepted: 03/27/2022] [Indexed: 01/02/2023]
Abstract
Lipid droplets (LD) are not just lipid stores. They are now recognized as highly dynamic organelles, having a life cycle that includes biogenesis, growth, steady-state, transport, and catabolism. Importantly, LD exhibit different features in terms of size, number, lipid composition, proteins, and interaction with other organelles, and all these features exert an impact on cellular homeostasis. The imbalance of LD function causes non-alcoholic fatty liver disease (NAFLD). Studies show that exercise attenuates NAFLD by decreasing LD content; however, reports show metabolic benefits without changes in LD amount (intrahepatic triglyceride levels) in NAFLD. Due to the multiple effects of exercise in LD features, we think that these metabolic benefits occur through changes in LD features in NAFLD, rather than only the reduction in content. Exercise increases energy mobilization and utilization from storages such as LD, and is one of the non-pharmacological treatments against NAFLD. Therefore, exercise modification of LD could be a target for NAFLD treatment. Here, we review the most up-to-date literature on this topic, and focus on recent findings showing that LD features could play an important role in the severity of NAFLD.
Collapse
Affiliation(s)
- Francisco Pino-de la Fuente
- Laboratorio de Investigación en Nutrición y Actividad Física (LABINAF), Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile; Departamento de Tecnología Médica, Facultad de Medicina, Universidad de Chile, Chile; Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
| | - Juan Carlos Bórquez
- Laboratorio de Investigación en Nutrición y Actividad Física (LABINAF), Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile
| | - Francisco Díaz-Castro
- Laboratorio de Investigación en Nutrición y Actividad Física (LABINAF), Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile
| | - Alejandra Espinosa
- Departamento de Tecnología Médica, Facultad de Medicina, Universidad de Chile, Chile
| | - Mario Chiong
- Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
| | - Rodrigo Troncoso
- Laboratorio de Investigación en Nutrición y Actividad Física (LABINAF), Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile; Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile.
| |
Collapse
|
27
|
Luo S, Yang M, Zhao H, Han Y, Jiang N, Yang J, Chen W, Li C, Liu Y, Zhao C, Sun L. Caveolin-1 Regulates Cellular Metabolism: A Potential Therapeutic Target in Kidney Disease. Front Pharmacol 2021; 12:768100. [PMID: 34955837 PMCID: PMC8703113 DOI: 10.3389/fphar.2021.768100] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 11/08/2021] [Indexed: 01/09/2023] Open
Abstract
The kidney is an energy-consuming organ, and cellular metabolism plays an indispensable role in kidney-related diseases. Caveolin-1 (Cav-1), a multifunctional membrane protein, is the main component of caveolae on the plasma membrane. Caveolae are represented by tiny invaginations that are abundant on the plasma membrane and that serve as a platform to regulate cellular endocytosis, stress responses, and signal transduction. However, caveolae have received increasing attention as a metabolic platform that mediates the endocytosis of albumin, cholesterol, and glucose, participates in cellular metabolic reprogramming and is involved in the progression of kidney disease. It is worth noting that caveolae mainly depend on Cav-1 to perform the abovementioned cellular functions. Furthermore, the mechanism by which Cav-1 regulates cellular metabolism and participates in the pathophysiology of kidney diseases has not been completely elucidated. In this review, we introduce the structure and function of Cav-1 and its functions in regulating cellular metabolism, autophagy, and oxidative stress, focusing on the relationship between Cav-1 in cellular metabolism and kidney disease; in addition, Cav-1 that serves as a potential therapeutic target for treatment of kidney disease is also described.
Collapse
Affiliation(s)
- Shilu Luo
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, China
| | - Ming Yang
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, China
| | - Hao Zhao
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, China
| | - Yachun Han
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, China
| | - Na Jiang
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, China
| | - Jinfei Yang
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, China
| | - Wei Chen
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, China
| | - Chenrui Li
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, China
| | - Yan Liu
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, China
| | - Chanyue Zhao
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, China
| | - Lin Sun
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, China
| |
Collapse
|
28
|
de Lima-Souza RA, Rodrigues NDM, Scarini JF, Silva MFS, Tincani AJ, Egal ESA, Altemani A, Mariano FV. Metabolic alterations in carcinoma ex pleomorphic adenoma development of lacrimal glands. Int Ophthalmol 2021; 42:1101-1109. [PMID: 34757565 DOI: 10.1007/s10792-021-02096-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 10/21/2021] [Indexed: 11/24/2022]
Abstract
PURPOSE To evaluate metabolic alterations along with the carcinoma ex pleomorphic adneoma (CXPA) development of lacrimal glands (LG). METHODS Four samples of the normal LG (NLG), 9 of pleomorphic adenoma (PA), 4 of residual PA (rPA), and 4 of CXPA of LG were included. GLUT-1, HIF-1α, FASN, and adipophilin by immunohistochemical stains were performed in the selected cases. RESULTS Was observed higher expression of markers associated with glycolytic and lipid metabolism in the tumor tissue samples when compared to the NLG samples. Additionally, GLUT-1, FASN, and Adipophilin were more expressed in CXPA samples while HIF-1α in PA samples. CONCLUSIONS In conclusion, our results demonstrate overexpression of FASN and Adipophilin in CXPA which may reflect a metabolic shift toward lipogenesis in cancer cells.
Collapse
Affiliation(s)
- Reydson Alcides de Lima-Souza
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil.,Department of Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Natália de Magalhães Rodrigues
- Department of Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - João Figueira Scarini
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil.,Department of Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Mário Fernandez Sobral Silva
- Department of Surgery, Head and Neck Surgery, School of Medical Sciences, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Alfio José Tincani
- Department of Surgery, Head and Neck Surgery, School of Medical Sciences, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Erika Said Abu Egal
- Department of Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil.,Department of Pathology, School of Medicine, University of Utah (UU), Salt Lake City, UT, USA
| | - Albina Altemani
- Department of Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Fernanda Viviane Mariano
- Department of Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil.
| |
Collapse
|
29
|
PIAS1 Regulates Hepatitis C Virus-Induced Lipid Droplet Accumulation by Controlling Septin 9 and Microtubule Filament Assembly. Pathogens 2021; 10:pathogens10101327. [PMID: 34684276 PMCID: PMC8537804 DOI: 10.3390/pathogens10101327] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 10/07/2021] [Accepted: 10/13/2021] [Indexed: 01/22/2023] Open
Abstract
Chronic hepatitis C virus (HCV) infection often leads to fibrosis and chronic hepatitis, then cirrhosis and ultimately hepatocellular carcinoma (HCC). The processes of the HVC life cycle involve intimate interactions between viral and host cell proteins and lipid metabolism. However, the molecules and mechanisms involved in this tripartite interaction remain poorly understood. Herein, we show that the infection of HCC-derived Huh7.5 cells with HCV promotes upregulation of the protein inhibitor of activated STAT1 (PIAS1). Reciprocally, PIAS1 regulated the expression of HCV core protein and HCV-induced LD accumulation and impaired HCV replication. Furthermore, PIAS1 controlled HCV-promoted septin 9 filament formation and microtubule polymerization. Subsequently, we found that PIAS1 interacted with septin 9 and controlled its assembly on filaments, which thus affected septin 9-induced lipid droplet accumulation. Taken together, these data reveal that PIAS1 regulates the accumulation of lipid droplets and offer a meaningful insight into how HCV interacts with host proteins.
Collapse
|
30
|
Neuroprotective Effects of Palmatine via the Enhancement of Antioxidant Defense and Small Heat Shock Protein Expression in A β-Transgenic Caenorhabditis elegans. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:9966223. [PMID: 34567416 PMCID: PMC8460366 DOI: 10.1155/2021/9966223] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 06/02/2021] [Accepted: 08/20/2021] [Indexed: 01/09/2023]
Abstract
Palmatine is a naturally occurring isoquinoline alkaloid that has been reported to display neuroprotective effects against amyloid-β- (Aβ-) induced neurotoxicity. However, the mechanisms underlying the neuroprotective activities of palmatine remain poorly characterized in vivo. We employed transgenic Caenorhabditis elegans models containing human Aβ1-42 to investigate the effects and possible mechanisms of palmatine-mediated neuroprotection. Treatment with palmatine significantly delayed the paralytic process and reduced the elevated reactive oxygen species levels in Aβ-transgenic C. elegans. In addition, it increased oxidative stress resistance without affecting the lifespan of wild-type C. elegans. Pathway analysis suggested that the differentially expressed genes were related mainly to aging, detoxification, and lipid metabolism. Real-time PCR indicated that resistance-related genes such as sod-3 and shsp were significantly upregulated, while the lipid metabolism-related gene fat-5 was downregulated. Further studies demonstrated that the inhibitory effects of palmatine on Aβ toxicity were attributable to the free radical-scavenging capacity and that the upregulated expression of resistance-related genes, especially shsp, whose expression was regulated by HSF-1, played crucial roles in protecting cells from Aβ-induced toxicity. The research showed that there were significantly fewer Aβ deposits in transgenic CL2006 nematodes treated with palmatine than in control nematodes. In addition, our study found that Aβ-induced toxicity was accompanied by dysregulation of lipid metabolism, leading to excessive fat accumulation in Aβ-transgenic CL4176 nematodes. The alleviation of lipid disorder by palmatine should be attributed not only to the reduction in fat synthesis but also to the inhibition of Aβ aggregation and toxicity, which jointly maintained metabolic homeostasis. This study provides new insights into the in vivo neuroprotective effects of palmatine against Aβ aggregation and toxicity and provides valuable targets for the prevention and treatment of AD.
Collapse
|
31
|
Renne MF, Hariri H. Lipid Droplet-Organelle Contact Sites as Hubs for Fatty Acid Metabolism, Trafficking, and Metabolic Channeling. Front Cell Dev Biol 2021; 9:726261. [PMID: 34595176 PMCID: PMC8477659 DOI: 10.3389/fcell.2021.726261] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 08/12/2021] [Indexed: 01/21/2023] Open
Abstract
Cells prepare for fluctuations in nutrient availability by storing energy in the form of neutral lipids in organelles called Lipid Droplets (LDs). Upon starvation, fatty acids (FAs) released from LDs are trafficked to different cellular compartments to be utilized for membrane biogenesis or as a source of energy. Despite the biochemical pathways being known in detail, the spatio-temporal regulation of FA synthesis, storage, release, and breakdown is not completely understood. Recent studies suggest that FA trafficking and metabolism are facilitated by inter-organelle contact sites that form between LDs and other cellular compartments such as the Endoplasmic Reticulum (ER), mitochondria, peroxisomes, and lysosomes. LD-LD contact sites are also sites where FAs are transferred in a directional manner to support LD growth and expansion. As the storage site of neutral lipids, LDs play a central role in FA homeostasis. In this mini review, we highlight the role of LD contact sites with other organelles in FA trafficking, channeling, and metabolism and discuss the implications for these pathways on cellular lipid and energy homeostasis.
Collapse
Affiliation(s)
- Mike F. Renne
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | - Hanaa Hariri
- Department of Biological Sciences, Wayne State University, Detroit, MI, United States
| |
Collapse
|
32
|
Abstract
Lipid droplets (LDs) are stored in the embryo throughout the preimplantation development. Yet, the role of LDs in the embryo remains unknown. Embryonic diapause (ED) is a temporary arrest of an embryo when it waits for the uterine receptivity signal to implant. We provide evidence that LDs play a crucial role in maintaining ED. Diapausing embryos exhibit increased release of exosomes reflecting elevated embryonic signaling to the mother. During ED, the decrease in lipid is caused by a switch from carbohydrate metabolism to lipid catabolism. We have also shown that presence of LDs in the oocytes of various mammals positively corelates with their species-specific length of diapause. Our results reveal the functional role of LDs in embryonic development. Embryonic diapause (ED) is a temporary arrest of an embryo at the blastocyst stage when it waits for the uterine receptivity signal to implant. ED used by over 100 species may also occur in normally “nondiapausing” mammals when the uterine receptivity signal is blocked or delayed. A large number of lipid droplets (LDs) are stored throughout the preimplantation embryo development, but the amount of lipids varies greatly across different mammalian species. Yet, the role of LDs in the mammalian egg and embryo remains unknown. Here, using a mouse model, we provide evidence that LDs play a crucial role in maintaining ED. By mechanical removal of LDs from zygotes, we demonstrated that delipidated embryos are unable to survive during ED. LDs are not essential for normal prompt implantation, without ED. We further demonstrated that with the progression of ED, the amount of intracellular lipid reduces, and composition changes. This decrease in lipid is caused by a switch from carbohydrate metabolism to lipid catabolism in diapausing blastocysts, which also exhibit increased release of exosomes reflecting elevated embryonic signaling to the mother. We have also shown that presence of LDs in the oocytes of various mammals positively corelates with their species-specific length of diapause. Our results reveal the functional role of LDs in embryonic development. These results can help to develop diagnostic techniques and treatment of recurrent implantation failure and will likely ignite further studies in developmental biology and reproductive medicine fields.
Collapse
|
33
|
Liang T, Wen D, Chen G, Chan A, Chen Z, Li H, Wang Z, Han X, Jiang L, Zhu JJ, Gu Z. Adipocyte-Derived Anticancer Lipid Droplets. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2100629. [PMID: 33987883 DOI: 10.1002/adma.202100629] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 03/26/2021] [Indexed: 06/12/2023]
Abstract
Engineering of efficient and safe materials remains a challenge for cancer therapy. Here, the lipid droplet, an organelle in adipocytes, is demonstrated to be a controllable and biocompatible vehicle to deliver anticancer drugs. It is validated that isolated lipid droplets maintain their key physiological functions to interact with other organelles and augment the therapeutic effect of cancer photodynamic therapy by encapsulation with a lipid-conjugated photosensitizer (Pyrolipid) through a variety of pathways, including generation of reactive oxygen species (ROS); lipid peroxidation; and endoplasmic reticulum (ER) stress. As such, the IC50 value of Pyrolipid is reduced by 6.0-fold when loaded into the lipid droplet. Of note, in vivo results demonstrate that engineered lipid droplets induce significant inhibition of tumor growth with minimal side effects.
Collapse
Affiliation(s)
- Tingxizi Liang
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- State Key Laboratory of Analytical Chemistry and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry & Chemical Engineering, Nanjing University, Nanjing, 210023, China
- Jonsson Comprehensive Cancer Center, California NanoSystems Institute, Los Angeles, CA, 90095, USA
| | - Di Wen
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Jonsson Comprehensive Cancer Center, California NanoSystems Institute, Los Angeles, CA, 90095, USA
| | - Guojun Chen
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Jonsson Comprehensive Cancer Center, California NanoSystems Institute, Los Angeles, CA, 90095, USA
| | - Amanda Chan
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Jonsson Comprehensive Cancer Center, California NanoSystems Institute, Los Angeles, CA, 90095, USA
| | - Zhaowei Chen
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Jonsson Comprehensive Cancer Center, California NanoSystems Institute, Los Angeles, CA, 90095, USA
| | - Hongjun Li
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Jonsson Comprehensive Cancer Center, California NanoSystems Institute, Los Angeles, CA, 90095, USA
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Zejun Wang
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Jonsson Comprehensive Cancer Center, California NanoSystems Institute, Los Angeles, CA, 90095, USA
| | - Xiao Han
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Jonsson Comprehensive Cancer Center, California NanoSystems Institute, Los Angeles, CA, 90095, USA
| | - Liping Jiang
- State Key Laboratory of Analytical Chemistry and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry & Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Jun-Jie Zhu
- State Key Laboratory of Analytical Chemistry and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry & Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Zhen Gu
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Jonsson Comprehensive Cancer Center, California NanoSystems Institute, Los Angeles, CA, 90095, USA
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
- Zhejiang Laboratory of Systems & Precision Medicine, Zhejiang University Medical Center, Hangzhou, 311121, China
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, 310016, China
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| |
Collapse
|
34
|
Liu R, Lee JH, Li J, Yu R, Tan L, Xia Y, Zheng Y, Bian XL, Lorenzi PL, Chen Q, Lu Z. Choline kinase alpha 2 acts as a protein kinase to promote lipolysis of lipid droplets. Mol Cell 2021; 81:2722-2735.e9. [PMID: 34077757 DOI: 10.1016/j.molcel.2021.05.005] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/02/2021] [Accepted: 05/07/2021] [Indexed: 02/08/2023]
Abstract
Lipid droplets are important for cancer cell growth and survival. However, the mechanism underlying the initiation of lipid droplet lipolysis is not well understood. We demonstrate here that glucose deprivation induces the binding of choline kinase (CHK) α2 to lipid droplets, which is sequentially mediated by AMPK-dependent CHKα2 S279 phosphorylation and KAT5-dependent CHKα2 K247 acetylation. Importantly, CHKα2 with altered catalytic domain conformation functions as a protein kinase and phosphorylates PLIN2 at Y232 and PLIN3 at Y251. The phosphorylated PLIN2/3 dissociate from lipid droplets and are degraded by Hsc70-mediated autophagy, thereby promoting lipid droplet lipolysis, fatty acid oxidation, and brain tumor growth. In addition, levels of CHKα2 S279 phosphorylation, CHKα2 K247 acetylation, and PLIN2/3 phosphorylation are positively correlated with one another in human glioblastoma specimens and are associated with poor prognosis in glioblastoma patients. These findings underscore the role of CHKα2 as a protein kinase in lipolysis and glioblastoma development.
Collapse
Affiliation(s)
- Rui Liu
- Zhejiang Provincial Key Laboratory of Pancreatic Disease, The First Affiliated Hospital, and Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, 310029, China; State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, China.
| | - Jong-Ho Lee
- Department of Health Sciences, The Graduate School of Dong-A University, Busan, 49315, Republic of Korea; Department of Biological Sciences, Dong-A University, Busan 49315, Republic of Korea
| | - Jingyi Li
- The Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, Sichuan, 610051, China
| | - Rilei Yu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong 266003, China
| | - Lin Tan
- The Proteomics and Metabolomics Core Facility, Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA
| | - Yan Xia
- Department of Neuro-Oncology and Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yanhua Zheng
- Department of Neuro-Oncology and Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Xue-Li Bian
- The Affiliated Hospital of Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong 266071, China
| | - Philip L Lorenzi
- The Proteomics and Metabolomics Core Facility, Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA
| | - Qianming Chen
- Stomatology Hospital, School of Stomatology, Cancer Center, Zhejiang University School of Medicine, and Key Laboratory of Oral Biomedical Research of Zhejiang Province, Clinical Research Center of Oral Diseases of Zhejiang Province, Hangzhou, 310006, Zhejiang, China.
| | - Zhimin Lu
- Zhejiang Provincial Key Laboratory of Pancreatic Disease, The First Affiliated Hospital, and Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, 310029, China; Zhejiang University Cancer Center, Hangzhou, 310029, China.
| |
Collapse
|
35
|
Kim SR, Hong JH, Sung SY, Kim YH, Chun SH, Lee HW, Lee JS, Ko YH. Efficacy of concurrent chemoradiotherapy for patients with limited-disease small-cell lung cancer: a retrospective, nationwide, population-based cohort study. BMC Cancer 2021; 21:340. [PMID: 33789628 PMCID: PMC8011172 DOI: 10.1186/s12885-021-08082-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 03/22/2021] [Indexed: 11/10/2022] Open
Abstract
Background Small-cell lung cancer (SCLC) is a highly proliferative, rapidly growing tumor with a poor prognosis, even in cases of limited disease (LD). Timely and accurate high-intensity therapy is necessary. For concurrent chemoradiotherapy (CCRT), etoposide/platinum (EP)-based regimens are recommended, although irinotecan/platinum (IP)-based regimens are also effective with radiotherapy. This large-scale, retrospective, nationwide cohort study aimed to analyze the efficacy of CCRT in patients with LD-SCLC. Methods Population data registered between January 2008 and December 2018 was extracted from the Health Insurance Review and Assessment Service of Korea database. Survival outcomes of 4446 LD-SCLC patients who received CCRT were analyzed. Results Patients who received EP-CCRT (n = 4187) showed better time to first subsequent therapy (TFST: 11.2 months) and overall survival (OS: 22.2 months) than those who received IP-CCRT (n = 259; TFST: 9.6 months, P = 0.0477; OS: 16.4 months, P < 0.0001). When CCRT failed, dual-agent chemotherapy (n = 925; OS: 9.1 months) provided a better survival benefit than single-agent chemotherapy (n = 815; OS: 7.5 months). IP-based chemotherapy resulted in better OS (9.6 months) than EP-based chemotherapy (7.1 months, P = 0.017) in platinum-resistant relapsed patients; the opposite was observed for platinum-sensitive relapsed patients (OS: EP, 17.2 months; IP, 6.6 months; P < 0.0001). Poisson regression analysis demonstrated that age, EP-CCRT, and hypercholesterolemia retained significant associations with OS after adjustment for all variables. Conclusion In the Korean population, the effects of EP-CCRT on OS and TFST are significantly more favorable than those of IP-CCRT. Supplementary Information The online version contains supplementary material available at 10.1186/s12885-021-08082-2.
Collapse
Affiliation(s)
- Seo Ree Kim
- Division of Oncology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - Ji Hyung Hong
- Division of Oncology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - Soo-Yoon Sung
- Department of Radiation Oncology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Yeo Hyung Kim
- Department of Rehabilitation Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sang Hoon Chun
- Division of Oncology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - Hyun Woo Lee
- Department of Hematology-Oncology, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Jung Soo Lee
- Department of Rehabilitation Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Yoon Ho Ko
- Division of Oncology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea. .,Cancer Research Institute, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea.
| |
Collapse
|
36
|
Savva C, Helguero LA, González-Granillo M, Couto D, Melo T, Li X, Angelin B, Domingues MR, Kutter C, Korach-André M. Obese mother offspring have hepatic lipidic modulation that contributes to sex-dependent metabolic adaptation later in life. Commun Biol 2021; 4:14. [PMID: 33398027 PMCID: PMC7782679 DOI: 10.1038/s42003-020-01513-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 11/24/2020] [Indexed: 02/05/2023] Open
Abstract
With the increasing prevalence of obesity in women of reproductive age, there is an urgent need to understand the metabolic impact on the fetus. Sex-related susceptibility to liver diseases has been demonstrated but the underlying mechanism remains unclear. Here we report that maternal obesity impacts lipid metabolism differently in female and male offspring. Males, but not females, gained more weight and had impaired insulin sensitivity when born from obese mothers compared to control. Although lipid mass was similar in the livers of female and male offspring, sex-specific modifications in the composition of fatty acids, triglycerides and phospholipids was observed. These overall changes could be linked to sex-specific regulation of genes controlling metabolic pathways. Our findings revised the current assumption that sex-dependent susceptibility to metabolic disorders is caused by sex-specific postnatal regulation and instead we provide molecular evidence supporting in utero metabolic adaptations in the offspring of obese mothers.
Collapse
Affiliation(s)
- Christina Savva
- Department of Medicine, Cardio Metabolic Unit (CMU) and KI/AZ Integrated Cardio Metabolic Center (ICMC), Karolinska Institute at Karolinska University Hospital Huddinge, Stockholm, Sweden
- Clinical Department of Endocrinology, Metabolism and Diabetes, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Luisa A Helguero
- Institute of Biomedicine, Department of Medical Sciences, University of Aveiro, Aveiro, Portugal
| | - Marcela González-Granillo
- Department of Medicine, Cardio Metabolic Unit (CMU) and KI/AZ Integrated Cardio Metabolic Center (ICMC), Karolinska Institute at Karolinska University Hospital Huddinge, Stockholm, Sweden
- Clinical Department of Endocrinology, Metabolism and Diabetes, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Daniela Couto
- CESAM, Centre for Environmental and Marine Studies, Department of Chemistry, University of Aveiro, Santiago University Campus, Aveiro, Portugal
- Mass Spectrometry Centre, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Santiago University Campus, Aveiro, Portugal
| | - Tânia Melo
- CESAM, Centre for Environmental and Marine Studies, Department of Chemistry, University of Aveiro, Santiago University Campus, Aveiro, Portugal
- Mass Spectrometry Centre, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Santiago University Campus, Aveiro, Portugal
| | - Xidan Li
- Department of Medicine, Cardio Metabolic Unit (CMU) and KI/AZ Integrated Cardio Metabolic Center (ICMC), Karolinska Institute at Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Bo Angelin
- Department of Medicine, Cardio Metabolic Unit (CMU) and KI/AZ Integrated Cardio Metabolic Center (ICMC), Karolinska Institute at Karolinska University Hospital Huddinge, Stockholm, Sweden
- Clinical Department of Endocrinology, Metabolism and Diabetes, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Maria Rosário Domingues
- CESAM, Centre for Environmental and Marine Studies, Department of Chemistry, University of Aveiro, Santiago University Campus, Aveiro, Portugal
- Mass Spectrometry Centre, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Santiago University Campus, Aveiro, Portugal
| | - Claudia Kutter
- Department of Microbiology, Tumor and Cell Biology, Science for Life Laboratory, Karolinska Institute, Stockholm, Sweden
| | - Marion Korach-André
- Department of Medicine, Cardio Metabolic Unit (CMU) and KI/AZ Integrated Cardio Metabolic Center (ICMC), Karolinska Institute at Karolinska University Hospital Huddinge, Stockholm, Sweden.
- Clinical Department of Endocrinology, Metabolism and Diabetes, Karolinska University Hospital Huddinge, Stockholm, Sweden.
| |
Collapse
|
37
|
Tavares VDS, de Castro MV, Souza RDSO, Gonçalves IKA, Lima JB, Borges VDM, Araújo-Santos T. Lipid droplets of protozoan parasites: survival and pathogenicity. Mem Inst Oswaldo Cruz 2021; 116:e210270. [PMID: 35195194 PMCID: PMC8851939 DOI: 10.1590/0074-02760210270] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 12/14/2021] [Indexed: 12/04/2022] Open
Abstract
Lipid droplets (LDs; lipid bodies) are intracellular sites of lipid storage and metabolism present in all cell types. Eukaryotic LDs are involved in eicosanoid production during several inflammatory conditions, including infection by protozoan parasites. In parasites, LDs play a role in the acquisition of cholesterol and other neutral lipids from the host. The number of LDs increases during parasite differentiation, and the biogenesis of these organelles use specific signaling pathways involving protein kinases. In addition, LDs are important in cellular protection against lipotoxicity. Recently, these organelles have been implicated in eicosanoid and specialised lipid metabolism. In this article, we revise the main functions of protozoan parasite LDs and discuss future directions in the comprehension of these organelles in the context of pathogen virulence.
Collapse
Affiliation(s)
| | | | | | | | - Jonilson Berlink Lima
- Universidade Federal do Oeste da Bahia, Brasil; Fundação Oswaldo Cruz-Fiocruz, Brasil
| | | | - Théo Araújo-Santos
- Universidade Federal do Oeste da Bahia, Brasil; Fundação Oswaldo Cruz-Fiocruz, Brasil
| |
Collapse
|
38
|
Klemm RW. Getting in Touch Is an Important Step: Control of Metabolism at Organelle Contact Sites. CONTACT (THOUSAND OAKS (VENTURA COUNTY, CALIF.)) 2021; 4:2515256421993708. [PMID: 37366381 PMCID: PMC10243586 DOI: 10.1177/2515256421993708] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 01/19/2021] [Accepted: 01/19/2021] [Indexed: 06/28/2023]
Abstract
Metabolic pathways are often spread over several organelles and need to be functionally integrated by controlled organelle communication. Physical organelle contact-sites have emerged as critical hubs in the regulation of cellular metabolism, but the molecular understanding of mechanisms that mediate formation or regulation of organelle interfaces was until recently relatively limited. Mitochondria are central organelles in anabolic and catabolic pathways and therefore interact with a number of other cellular compartments including the endoplasmic reticulum (ER) and lipid droplets (LDs). An interesting set of recent work has shed new light on the molecular basis forming these contact sites. This brief overview describes the discovery of unanticipated functions of contact sites between the ER, mitochondria and LDs in de novo synthesis of storage lipids of brown and white adipocytes. Interestingly, the factors involved in mediating the interaction between these organelles are subject to unexpected modes of regulation through newly uncovered Phospho-FFAT motifs. These results suggest dynamic regulation of contact sites between organelles and indicate that spatial organization of organelles within the cell contributes to the control of metabolism.
Collapse
Affiliation(s)
- Robin W. Klemm
- Department of Physiology,
Anatomy and Genetics, University of Oxford, UK
| |
Collapse
|
39
|
Varma SC, Saha A, Mukherjee S, Bandopadhyay A, Kumar A, Chakraborty S. Universality in coalescence of polymeric fluids. SOFT MATTER 2020; 16:10921-10927. [PMID: 33136111 DOI: 10.1039/d0sm01663b] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A pendant drop merging with a sessile drop and subsequently forming a single daughter drop is known to exhibit complex topologies. But their dynamics are yet to be probed for fluids exhibiting characteristic relaxation time scales while undergoing the deformation process. Here, we unveil a universal temporal evolution of the neck radius of the daughter drop during the coalescence of two polymeric drops. Such a generalization does not rely on the existence of previously explored viscous and inertial dominated regimes for simpler fluids but is fundamentally premised on a unique topographical evolution with essential features of interest exclusively smaller than the dominant scales of the flow. Our findings are substantiated by a theoretical model that considers the drops under coalescence to be partially viscous and partially elastic in nature. These results are substantiated with high-speed imaging experiments on drops of polyacrylamide (PAM), polyvinyl alcohol (PVA), polyethylene oxide (PEO), and polyethylene glycol (PEG). The observations herein are expected to hold importance for a plethora of diverse processes ranging from biophysics and microfluidics to the processing of materials in a wide variety of industrial applications.
Collapse
Affiliation(s)
- Sarath Chandra Varma
- Department of Mechanical Engineering, Indian Institute of Science, Bengaluru, Karnataka-560012, India.
| | | | | | | | | | | |
Collapse
|
40
|
Cui L, Liu P. Two Types of Contact Between Lipid Droplets and Mitochondria. Front Cell Dev Biol 2020; 8:618322. [PMID: 33385001 PMCID: PMC7769837 DOI: 10.3389/fcell.2020.618322] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 11/25/2020] [Indexed: 12/11/2022] Open
Abstract
Lipid droplets (LDs) and mitochondria are essential organelles involved in cellular lipid metabolism and energy homeostasis. Accumulated studies have revealed that the physical contact between these two organelles is important for their functions. Current understanding of the contact between cellular organelles is highly dynamic, fitting a "kiss-and-run" model. The same pattern of contact between LDs and mitochondria has been reported and several proteins are found to mediate this contact, such as perilipin1 (PLIN1) and PLIN5. Another format of the contact has also been found and termed anchoring. LD-anchored mitochondria (LDAM) are identified in oxidative tissues including brown adipose tissue (BAT), skeletal muscle, and heart muscle, and this anchoring between these two organelles is conserved from mouse to monkey. Moreover, this anchoring is generated during the brown/beige adipocyte differentiation. In this review, we will summarize previous studies on the interaction between LDs and mitochondria, categorize the types of the contacts into dynamic and stable/anchored, present their similarities and differences, discuss their potential distinct molecular mechanism, and finally propose a working hypothesis that may explain why and how cells use two patterns of contact between LDs and mitochondria.
Collapse
Affiliation(s)
- Liujuan Cui
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Pingsheng Liu
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| |
Collapse
|
41
|
Huang J, Chen X, Zhang F, Lin M, Lin G, Zhang Z. Lipid Droplet Metabolism Across Eukaryotes: Evidence from Yeast to Humans. J EVOL BIOCHEM PHYS+ 2020. [DOI: 10.1134/s0022093020050026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
42
|
Andreadou I, Tsoumani M, Vilahur G, Ikonomidis I, Badimon L, Varga ZV, Ferdinandy P, Schulz R. PCSK9 in Myocardial Infarction and Cardioprotection: Importance of Lipid Metabolism and Inflammation. Front Physiol 2020; 11:602497. [PMID: 33262707 PMCID: PMC7688516 DOI: 10.3389/fphys.2020.602497] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 10/26/2020] [Indexed: 12/12/2022] Open
Abstract
Extensive evidence from epidemiologic, genetic, and clinical intervention studies has indisputably shown that elevated low-density lipoprotein cholesterol (LDL-C) concentrations play a central role in the pathophysiology of atherosclerotic cardiovascular disease. Apart from LDL-C, also triglycerides independently modulate cardiovascular risk. Reduction of proprotein convertase subtilisin/kexin type 9 (PCSK9) has emerged as a therapeutic target for reducing plasma LDL-C, but it is also associated with a reduction in triglyceride levels potentially through modulation of the expression of free fatty acid transporters. Preclinical data indicate that PCSK9 is up-regulated in the ischaemic heart and decreasing PCSK9 expression impacts on infarct size, post infarct inflammation and remodeling as well as cardiac dysfunction following ischaemia/reperfusion. Clinical data support that notion in that PCSK9 inhibition is associated with reductions in the incidence of myocardial infarction, stroke, and coronary revascularization and an improvement of endothelial function in subjects with increased cardiovascular risk. The aim of the current review is to summarize the current knowledge on the importance of free fatty acid metabolism on myocardial ischaemia/reperfusion injury and to provide an update on recent evidence on the role of hyperlipidemia and PCSK9 in myocardial infarction and cardioprotection.
Collapse
Affiliation(s)
- Ioanna Andreadou
- Laboratory of Pharmacology, Faculty of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece
| | - Maria Tsoumani
- Laboratory of Pharmacology, Faculty of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece
| | - Gemma Vilahur
- Cardiovascular Program-ICCC, Research Institute-Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, Barcelona, Spain.,CIBERCV, Instituto Salud Carlos III, Madrid, Spain
| | - Ignatios Ikonomidis
- Second Cardiology Department, Attikon Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Lina Badimon
- Cardiovascular Program-ICCC, Research Institute-Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, Barcelona, Spain.,CIBERCV, Instituto Salud Carlos III, Madrid, Spain.,Cardiovascular Research Chair, Autonomous University of Barcelona (UAB), Barcelona Spain
| | - Zoltán V Varga
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary.,HCEMM-SU Cardiometabolic Immunology Research Group, Budapest, Hungary
| | - Péter Ferdinandy
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary.,Pharmahungary Group, Szeged, Hungary
| | - Rainer Schulz
- Institute for Physiology, Justus-Liebig University Giessen, Giessen, Germany
| |
Collapse
|
43
|
Zhou Y, Li P, Wang X, Wu C, Fan N, Liu X, Wu L, Zhang W, Zhang W, Liu Z, Tang B. In situ visualization of peroxisomal viscosity in the liver of mice with non-alcoholic fatty liver disease by near-infrared fluorescence and photoacoustic imaging. Chem Sci 2020; 11:12149-12156. [PMID: 34094429 PMCID: PMC8163019 DOI: 10.1039/d0sc02922j] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Accepted: 10/02/2020] [Indexed: 12/15/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) can gradually develop into hepatic failure, and early diagnosis is crucial to improve treatment efficiency. The occurrence of NAFLD is closely related to lipid metabolism. Peroxisomes act as the first and main site for lipid metabolism in the hepatocytes, so abnormal lipid metabolism might directly affect peroxisomal viscosity. Herein, we developed a new near-infrared fluorescence (NIRF) and photoacoustic (PA) imaging probe (PV-1) for the real-time visualization of peroxisomal viscosity in vivo. This PV-1 encompasses the malononitrile group as the rotor, which emits strong NIRF (at 705 nm) and PA (at 680 nm) signals when rotation is hindered as viscosity increases. Through dual-mode imaging, we discovered distinctly higher viscosity in the liver of NAFLD mice for the first time. We further found the remarkable amelioration of NAFLD upon treatment with N-acetylcysteine (NAC). Therefore, we anticipate that the PV-1 imaging method is promising for the early diagnosis and prognostic evaluation of NAFLD.
Collapse
Affiliation(s)
- Yongqing Zhou
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University Jinan 250014 People's Republic of China
| | - Ping Li
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University Jinan 250014 People's Republic of China
| | - Xin Wang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University Jinan 250014 People's Republic of China
| | - Chuanchen Wu
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University Jinan 250014 People's Republic of China
| | - Nannan Fan
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University Jinan 250014 People's Republic of China
| | - Xiaoning Liu
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University Jinan 250014 People's Republic of China
| | - Lijie Wu
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University Jinan 250014 People's Republic of China
| | - Wei Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University Jinan 250014 People's Republic of China
| | - Wen Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University Jinan 250014 People's Republic of China
| | - Zhenzhen Liu
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University Jinan 250014 People's Republic of China
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University Jinan 250014 People's Republic of China
| |
Collapse
|
44
|
Kubalová D, Káňovičová P, Veselá P, Awadová T, Džugasová V, Daum G, Malínský J, Balážová M. The lipid droplet protein Pgc1 controls the subcellular distribution of phosphatidylglycerol. FEMS Yeast Res 2020; 19:5524364. [PMID: 31247640 DOI: 10.1093/femsyr/foz045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Accepted: 06/26/2019] [Indexed: 12/12/2022] Open
Abstract
The biosynthesis of yeast phosphatidylglycerol (PG) takes place in the inner mitochondrial membrane. Outside mitochondria, the abundance of PG is low. Here, we present evidence that the subcellular distribution of PG is maintained by the locally controlled enzymatic activity of the PG-specific phospholipase, Pgc1. A fluorescently labeled Pgc1 protein accumulates on the surface of lipid droplets (LD). We show, however, that LD are not only dispensable for Pgc1-mediated PG degradation, but do not even host any phospholipase activity of Pgc1. Our in vitro assays document the capability of LD-accumulated Pgc1 to degrade PG upon entry to the membranes of the endoplasmic reticulum, mitochondria and even of artificial phospholipid vesicles. Fluorescence recovery after photobleaching analysis confirms the continuous exchange of GFP-Pgc1 within the individual LD in situ, suggesting that a steady-state equilibrium exists between LD and membranes to regulate the immediate phospholipase activity of Pgc1. In this model, LD serve as a storage place and shelter Pgc1, preventing its untimely degradation, while both phospholipase activity and degradation of the enzyme occur in the membranes.
Collapse
Affiliation(s)
- Dominika Kubalová
- Department of Membrane Biochemistry, Institute of Animal Biochemistry and Genetics, Centre of Biosciences, Slovak Academy of Sciences, 84005 Bratislava, Slovakia
| | - Paulína Káňovičová
- Department of Membrane Biochemistry, Institute of Animal Biochemistry and Genetics, Centre of Biosciences, Slovak Academy of Sciences, 84005 Bratislava, Slovakia
| | - Petra Veselá
- Department of Microscopy, Institute of Experimental Medicine, Academy of Sciences of the Czech Republic,14220 Prague, Czech Republic
| | - Thuraya Awadová
- Department of Microscopy, Institute of Experimental Medicine, Academy of Sciences of the Czech Republic,14220 Prague, Czech Republic
| | - Vladimíra Džugasová
- Department of Genetics, Faculty of Natural Sciences, Comenius University, 84215 Bratislava, Slovakia
| | - Günther Daum
- Institute of Biochemistry, Graz University of Technology, 8010 Graz, Austria
| | - Jan Malínský
- Department of Microscopy, Institute of Experimental Medicine, Academy of Sciences of the Czech Republic,14220 Prague, Czech Republic
| | - Mária Balážová
- Department of Membrane Biochemistry, Institute of Animal Biochemistry and Genetics, Centre of Biosciences, Slovak Academy of Sciences, 84005 Bratislava, Slovakia
| |
Collapse
|
45
|
Fujimoto M, Matsuzaki I, Nishitsuji K, Yamamoto Y, Murakami D, Yoshikawa T, Fukui A, Mori Y, Nishino M, Takahashi Y, Iwahashi Y, Warigaya K, Kojima F, Jinnin M, Murata SI. Adipophilin expression in cutaneous malignant melanoma is associated with high proliferation and poor clinical prognosis. J Transl Med 2020; 100:727-737. [PMID: 31857696 DOI: 10.1038/s41374-019-0358-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 11/01/2019] [Accepted: 11/12/2019] [Indexed: 12/12/2022] Open
Abstract
Adipophilin (ADP) is a primary protein component of lipid droplets (LDs). For more than half a century, certain types of cancer cells have been known to contain LDs in their cytoplasm. However, the pathological significance of ADP or LDs in cancer remains unclear. In the present study, we investigated the association between ADP and other pathological characteristics in cutaneous malignant melanomas to clarify the role of ADP in melanoma cells. We immunostained whole paraffin sections of primary cutaneous melanomas obtained from 90 cases for ADP, after which we analyzed the correlation between ADP immunohistochemistry (IHC) and patient survival data. We also studied the relationship between the ADP IHC score and in situ hybridization (ISH) score of ADP mRNA, and the Ki67-labeling index (Ki67-LI) by using tissue microarrays consisting of 74 primary cutaneous malignant melanomas, 19 metastasizing melanomas, and 29 melanocytic nevi. Finally, we analyzed the relationship between ADP expression and cell proliferation in cutaneous melanoma cell lines. We found that high ADP expression was associated with poor metastasis-free survival, disease-specific survival, and overall survival rates of patients with cutaneous melanomas (P < 0.05). By linear regression analysis, ADP IHC was correlated with increasing ADP mRNA ISH H-scores and Ki67-LI scores in melanocytic lesions (P < 0.01). ADP IHC and ADP ISH H-scores and Ki67-LI scores were greater in pT3-4 melanomas than in pT1-2 melanomas. In cell-based assays, cells with increased ADP expression showed higher proliferation rates compared with those of low-ADP cells. Thus, ADP expression in malignant melanoma was significantly associated with high cell proliferation and poor clinical prognosis. Our results thus indicate a significant association between ADP and melanoma progression, and we propose that ADP may be a novel marker of aggressive cutaneous melanoma with a lipogenic phenotype.
Collapse
Affiliation(s)
- Masakazu Fujimoto
- Department of Diagnostic Pathology, Wakayama Medical University, Wakayama, Japan.
| | - Ibu Matsuzaki
- Department of Diagnostic Pathology, Wakayama Medical University, Wakayama, Japan
| | | | - Yuki Yamamoto
- Department of Dermatology, Wakayama Medical University, Wakayama, Japan
| | - Daisuke Murakami
- Second Department of Surgery, Wakayama Medical University, Wakayama, Japan
| | - Takanori Yoshikawa
- Clinical Study Support Center, Wakayama Medical University, Wakayama, Japan
| | - Ayaka Fukui
- Department of Diagnostic Pathology, Wakayama Medical University, Wakayama, Japan
| | - Yuuki Mori
- Department of Diagnostic Pathology, Wakayama Medical University, Wakayama, Japan
| | - Masaru Nishino
- Department of Diagnostic Pathology, Wakayama Medical University, Wakayama, Japan
| | - Yuichi Takahashi
- Department of Diagnostic Pathology, Wakayama Medical University, Wakayama, Japan
| | - Yoshifumi Iwahashi
- Department of Diagnostic Pathology, Wakayama Medical University, Wakayama, Japan
| | - Kenji Warigaya
- Department of Diagnostic Pathology, Wakayama Medical University, Wakayama, Japan
| | - Fumiyoshi Kojima
- Department of Diagnostic Pathology, Wakayama Medical University, Wakayama, Japan
| | - Masatoshi Jinnin
- Department of Dermatology, Wakayama Medical University, Wakayama, Japan
| | - Shin-Ichi Murata
- Department of Diagnostic Pathology, Wakayama Medical University, Wakayama, Japan
| |
Collapse
|
46
|
Liu G, Wang J, Zhang G, Zhang H, Zhu Y, Xu H, Kong L, Tian Y, Zhu X, Zhou H. Dynamic cyclic behaviors of lipid droplets monitored by two-photon fluorescence probe with high photostability. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 228:117766. [PMID: 31718977 DOI: 10.1016/j.saa.2019.117766] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 11/04/2019] [Accepted: 11/04/2019] [Indexed: 06/10/2023]
Abstract
Lipid droplets (LDs) are organelles featuring in intracellular storage of neutral lipids, which are involved with many biological processes. Monitoring the dynamical cyclic behaviors of cellular LDs poses great importance for early disease diagnosis. Herein, two coumarin-based LDs-specific fluorescence probes exhibited "turn-on" and two-photon fluorescence triggered by breaking their aggregation states. By virtue of establishing oil/water emulsions model to simulate LDs, the behaviors of "turn-on" fluorescence were elucidated, which benefited for the enhancement of selectivity of the probes to LDs. Then, we highlight a LDs-specific coumarin-based two-photon probe (L1) with high photo-stability to monitor the dynamic cyclic behaviors of LDs in cells, unraveling the changes of LDs quantity during lipophagy and the reproduction of LDs to prevent lipotoxicity. We believe the probe offers a convenient way to investigate the biology of LDs.
Collapse
Affiliation(s)
- Gang Liu
- College of Chemistry and Chemical Engineering, Anhui University, Key Laboratory of Functional Inorganic Materials Chemistry of Anhui Province, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Anhui University) Ministry of Education, Hefei 230601, PR China
| | - Junjun Wang
- College of Chemistry and Chemical Engineering, Anhui University, Key Laboratory of Functional Inorganic Materials Chemistry of Anhui Province, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Anhui University) Ministry of Education, Hefei 230601, PR China
| | - Gaojian Zhang
- Institute of Physical Science and Information Technology, Faculty of Health Sciences, Anhui University, Hefei 230601, PR China
| | - Huihui Zhang
- College of Chemistry and Chemical Engineering, Anhui University, Key Laboratory of Functional Inorganic Materials Chemistry of Anhui Province, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Anhui University) Ministry of Education, Hefei 230601, PR China
| | - Yin Zhu
- College of Chemistry and Chemical Engineering, Anhui University, Key Laboratory of Functional Inorganic Materials Chemistry of Anhui Province, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Anhui University) Ministry of Education, Hefei 230601, PR China
| | - Hongkang Xu
- College of Chemistry and Chemical Engineering, Anhui University, Key Laboratory of Functional Inorganic Materials Chemistry of Anhui Province, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Anhui University) Ministry of Education, Hefei 230601, PR China
| | - Lin Kong
- College of Chemistry and Chemical Engineering, Anhui University, Key Laboratory of Functional Inorganic Materials Chemistry of Anhui Province, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Anhui University) Ministry of Education, Hefei 230601, PR China
| | - Yupeng Tian
- College of Chemistry and Chemical Engineering, Anhui University, Key Laboratory of Functional Inorganic Materials Chemistry of Anhui Province, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Anhui University) Ministry of Education, Hefei 230601, PR China
| | - Xiaojiao Zhu
- College of Chemistry and Chemical Engineering, Anhui University, Key Laboratory of Functional Inorganic Materials Chemistry of Anhui Province, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Anhui University) Ministry of Education, Hefei 230601, PR China.
| | - Hongping Zhou
- College of Chemistry and Chemical Engineering, Anhui University, Key Laboratory of Functional Inorganic Materials Chemistry of Anhui Province, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Anhui University) Ministry of Education, Hefei 230601, PR China.
| |
Collapse
|
47
|
Song YF, Hogstrand C, Ling SC, Chen GH, Luo Z. Creb-Pgc1α pathway modulates the interaction between lipid droplets and mitochondria and influences high fat diet-induced changes of lipid metabolism in the liver and isolated hepatocytes of yellow catfish. J Nutr Biochem 2020; 80:108364. [PMID: 32199344 DOI: 10.1016/j.jnutbio.2020.108364] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 01/04/2020] [Accepted: 02/21/2020] [Indexed: 12/14/2022]
Abstract
Although the crucial role of lipid droplets (LDs), mitochondria (MT) and their interactions in regulating lipid metabolism are well accepted, the mechanism of LDs-MT interactions in high fat diet (HFD)-induced changes of lipid metabolism remains unknown. Thus, this study was conducted to determine the mechanism of LDs-MT interactions in HFD-induced changes of lipid accumulation. We found that HFD not only up-regulated the expression of key proteins linked with TAG biosynthesis, but also increased the expression of proteins involved in lipolysis and fatty acid (FA) oxidation in LDs, including Rab32 (the only Rab protein associated with the MT). FA-induced LDs accumulation coincided with increased mitochondrial biogenesis, suggesting the potential LDs-MT interaction in hepatocytes after FA incubation. Also, FA incubation markedly increased the localization of Rab32 into LDs and MT, which confirmed the LDs-MT interaction and indicated the involvement of Rab32 in LDs-MT interaction following FA incubation. Inhibitors of Creb-Pgc1α pathway significantly blocked the localization of Rab32 into LDs and MT, and significantly reduced FA-induced LDs lipolysis by targeting Atgl and Plin5. Meanwhile, the FA-enhanced LDs accumulation, and mitochondrial biogenesis, fusion and oxidation were also significantly repressed. These indicated the regulatory role of Creb-Pgc1α in Rab32-mediated LDs-MT interactions and lipolysis after FA incubation. Taken together, these results revealed a novel mechanism of HFD- and FA-induced LDs-MT interactions in regulating hepatic LDs lipolysis, which provided new insight into the crosstalk between LDs-MT interaction and their potential role in HFD-induced hepatic steatosis.
Collapse
Affiliation(s)
- Yu-Feng Song
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Fishery College, Huazhong Agricultural University, Wuhan 430070, China
| | - Christer Hogstrand
- Diabetes and Nutritional Sciences Division, School of Medicine, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London, SE1 9NH, UK
| | - Shi-Cheng Ling
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Fishery College, Huazhong Agricultural University, Wuhan 430070, China
| | - Guang-Hui Chen
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Fishery College, Huazhong Agricultural University, Wuhan 430070, China
| | - Zhi Luo
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Fishery College, Huazhong Agricultural University, Wuhan 430070, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China.
| |
Collapse
|
48
|
Jana P, Siva A, Soppina V, Kanvah S. Live-cell imaging of lipid droplets using solvatochromic coumarin derivatives. Org Biomol Chem 2020; 18:5608-5616. [DOI: 10.1039/d0ob01277g] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Lipid droplets (LDs), the lipid-rich intracellular organelles were selectively detected using simple coumarin containing fluorophores.
Collapse
Affiliation(s)
- Palash Jana
- Department of Chemistry
- Indian Institute of Technology Gandhinagar
- Gandhinagar 382355
- India
| | - Aravintha Siva
- Department of Biological Engineering
- Indian Institute of Technology Gandhinagar
- Gandhinagar 382355
- India
| | - Virupakshi Soppina
- Department of Biological Engineering
- Indian Institute of Technology Gandhinagar
- Gandhinagar 382355
- India
| | - Sriram Kanvah
- Department of Chemistry
- Indian Institute of Technology Gandhinagar
- Gandhinagar 382355
- India
| |
Collapse
|
49
|
Schrader M, Kamoshita M, Islinger M. Organelle interplay-peroxisome interactions in health and disease. J Inherit Metab Dis 2020; 43:71-89. [PMID: 30864148 PMCID: PMC7041636 DOI: 10.1002/jimd.12083] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 02/28/2019] [Accepted: 03/06/2019] [Indexed: 01/04/2023]
Abstract
Peroxisomes are multifunctional, dynamic, membrane-bound organelles with important functions in cellular lipid metabolism, rendering them essential for human health and development. Important roles for peroxisomes in signaling and the fine-tuning of cellular processes are emerging, which integrate them in a complex network of interacting cellular compartments. Like many other organelles, peroxisomes communicate through membrane contact sites. For example, peroxisomal growth, positioning, and lipid metabolism involves contacts with the endoplasmic reticulum (ER). Here, we discuss the most recent findings on peroxisome-organelle interactions including peroxisome-ER interplay at membrane contacts sites, and functional interplay with mitochondria, lysosomes, and lipid droplets in mammalian cells. We address tether proteins, metabolic cooperation, and the impact of peroxisome interactions on human health and disease.
Collapse
Affiliation(s)
- Michael Schrader
- College of Life and Environmental Sciences, BiosciencesUniversity of ExeterExeterUK
| | - Maki Kamoshita
- College of Life and Environmental Sciences, BiosciencesUniversity of ExeterExeterUK
| | - Markus Islinger
- Institute of Neuroanatomy, Center for Biomedicine and Medical Technology Mannheim, Medical Faculty ManheimUniversity of HeidelbergMannheimGermany
| |
Collapse
|
50
|
Nardi F, Fitchev P, Brooks KM, Franco OE, Cheng K, Hayward SW, Welte MA, Crawford SE. Lipid droplet velocity is a microenvironmental sensor of aggressive tumors regulated by V-ATPase and PEDF. J Transl Med 2019; 99:1822-1834. [PMID: 31409893 PMCID: PMC7289525 DOI: 10.1038/s41374-019-0296-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 06/04/2019] [Accepted: 06/05/2019] [Indexed: 12/19/2022] Open
Abstract
Lipid droplets (LDs) utilize microtubules (MTs) to participate in intracellular trafficking of cargo proteins. Cancer cells accumulate LDs and acidify their tumor microenvironment (TME) by increasing the proton pump V-ATPase. However, it is not known whether these two metabolic changes are mechanistically related or influence LD movement. We postulated that LD density and velocity are progressively increased with tumor aggressiveness and are dependent on V-ATPase and the lipolysis regulator pigment epithelium-derived factor (PEDF). LD density was assessed in human prostate cancer (PCa) specimens across Gleason scores (GS) 6-8. LD distribution and velocity were analyzed in low and highly aggressive tumors using live-cell imaging and in cells exposed to low pH and/or treated with V-ATPase inhibitors. The MT network was disrupted and analyzed by α-tubulin staining. LD density positively correlated with advancing GS in human tumors. Acidification promoted peripheral localization and clustering of LDs. Highly aggressive prostate, breast, and pancreatic cell lines had significantly higher maximum LD velocity (LDVmax) than less aggressive and benign cells. LDVmax was MT-dependent and suppressed by blocking V-ATPase directly or indirectly with PEDF. Upon lowering pH, LDs moved to the cell periphery and carried metalloproteinases. These results suggest that acidification of the TME can alter intracellular LD movement and augment velocity in cancer. Restoration of PEDF or blockade of V-ATPase can normalize LD distribution and decrease velocity. This study identifies V-ATPase and PEDF as new modulators of LD trafficking in the cancer microenvironment.
Collapse
Affiliation(s)
- Francesca Nardi
- Department of Surgery, NorthShore University Research Institute, Affiliate of University of Chicago Pritzker School of Medicine, Evanston, IL 60201
| | - Philip Fitchev
- Department of Surgery, NorthShore University Research Institute, Affiliate of University of Chicago Pritzker School of Medicine, Evanston, IL 60201
| | - Kyrsten M. Brooks
- Department of Pathology, Saint Louis University School of Medicine, 1402 South Grand Blvd., Saint Louis, MO 63104
| | - Omar E. Franco
- Department of Surgery, NorthShore University Research Institute, Affiliate of University of Chicago Pritzker School of Medicine, Evanston, IL 60201
| | - Kevin Cheng
- Department of Pathology, Saint Louis University School of Medicine, 1402 South Grand Blvd., Saint Louis, MO 63104
| | - Simon W. Hayward
- Department of Surgery, NorthShore University Research Institute, Affiliate of University of Chicago Pritzker School of Medicine, Evanston, IL 60201
| | - Michael A. Welte
- Department of Biology, University of Rochester, RC Box 270211, Rochester, NY 14627
| | - Susan E. Crawford
- Department of Surgery, NorthShore University Research Institute, Affiliate of University of Chicago Pritzker School of Medicine, Evanston, IL 60201,Department of Pathology, Saint Louis University School of Medicine, 1402 South Grand Blvd., Saint Louis, MO 63104
| |
Collapse
|