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Huster D, Maiti S, Herrmann A. Phospholipid Membranes as Chemically and Functionally Tunable Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2312898. [PMID: 38456771 DOI: 10.1002/adma.202312898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 02/12/2024] [Indexed: 03/09/2024]
Abstract
The sheet-like lipid bilayer is the fundamental structural component of all cell membranes. Its building blocks are phospholipids and cholesterol. Their amphiphilic structure spontaneously leads to the formation of a bilayer in aqueous environment. Lipids are not just structural elements. Individual lipid species, the lipid membrane structure, and lipid dynamics influence and regulate membrane protein function. An exciting field is emerging where the membrane-associated material properties of different bilayer systems are used in designing innovative solutions for widespread applications across various fields, such as the food industry, cosmetics, nano- and biomedicine, drug storage and delivery, biotechnology, nano- and biosensors, and computing. Here, the authors summarize what is known about how lipids determine the properties and functions of biological membranes and how this has been or can be translated into innovative applications. Based on recent progress in the understanding of membrane structure, dynamics, and physical properties, a perspective is provided on how membrane-controlled regulation of protein functions can extend current applications and even offer new applications.
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Affiliation(s)
- Daniel Huster
- Institute of Medical Physics and Biophysics, University of Leipzig, Härtelstr. 16/18, D-04107, Leipzig, Germany
| | - Sudipta Maiti
- Department of Chemical Sciences, Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai, 400 005, India
| | - Andreas Herrmann
- Freie Universität Berlin, Department Chemistry and Biochemistry, SupraFAB, Altensteinstr. 23a, D-14195, Berlin, Germany
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Ezoe K, Onogi S, Sawado A, Amagai A, Kato K. Maternal and obstetric outcomes following the transfer of embryos warmed with fatty acid-supplemented solutions. BMC Pregnancy Childbirth 2024; 24:343. [PMID: 38704546 PMCID: PMC11069166 DOI: 10.1186/s12884-024-06546-4] [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: 01/01/2024] [Accepted: 04/26/2024] [Indexed: 05/06/2024] Open
Abstract
BACKGROUND Vitrification procedures decrease intracytoplasmic lipid content and impair developmental competence. Adding fatty acids (FAs) to the warming solution has been shown to recover the lipid content of the cytoplasm and improve developmental competence and pregnancy outcomes. However, the influence of the FA supplementation on live birth rates after embryo transfers and perinatal outcomes remains unknown. In the present study, we examined the influence of FA-supplemented warming solutions on live birth rates, pregnancy complications, and neonatal outcomes after single vitrified-warmed cleavage-stage embryo transfers (SVCTs). METHODS The clinical records of 701 treatment cycles in 701 women who underwent SVCTs were retrospectively analyzed. Vitrified embryos were warmed using solutions (from April 2022 to June 2022, control group) or FA-supplemented solutions (from July 2022 to September 2022, FA group). The live birth rate, pregnancy complications, and perinatal outcomes were compared between the control and FA groups. RESULTS The live birth rate per transfer was significantly higher in the FA group than in the control group. Multivariate logistic regression analysis further demonstrated a higher probability of live births in the FA group than in the control group. Miscarriage rates, the incidence and types of pregnancy complications, the cesarean section rate, gestational age, incidence of preterm delivery, birth length and weight, incidence of low birth weight, infant sex, and incidence of birth defects were all comparable between the control and FA groups. Multivariate logistic regression analysis further demonstrated no adverse effects of FA-supplemented warming solutions. CONCLUSIONS FA-supplemented warming solutions improved live birth rates after SVCTs without exerting any adverse effects on maternal and obstetric outcomes. Therefore, FA-supplemented solutions can be considered safe and effective for improving clinical outcomes and reducing patient burden.
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Affiliation(s)
- Kenji Ezoe
- Kato Ladies Clinic, 7-20-3 Nishishinjyuku, Shinjyuku-ku, Tokyo, 160-0023, Japan
| | - Sachie Onogi
- Kato Ladies Clinic, 7-20-3 Nishishinjyuku, Shinjyuku-ku, Tokyo, 160-0023, Japan
| | - Ayano Sawado
- Kato Ladies Clinic, 7-20-3 Nishishinjyuku, Shinjyuku-ku, Tokyo, 160-0023, Japan
| | - Ayumi Amagai
- Kato Ladies Clinic, 7-20-3 Nishishinjyuku, Shinjyuku-ku, Tokyo, 160-0023, Japan
| | - Keiichi Kato
- Kato Ladies Clinic, 7-20-3 Nishishinjyuku, Shinjyuku-ku, Tokyo, 160-0023, Japan.
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Sawado A, Ezoe K, Miki T, Ohata K, Amagai A, Shimazaki K, Okimura T, Kato K. Fatty acid supplementation during warming improves pregnancy outcomes after frozen blastocyst transfers: a propensity score-matched study. Sci Rep 2024; 14:9343. [PMID: 38653766 PMCID: PMC11039611 DOI: 10.1038/s41598-024-60136-0] [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: 01/02/2024] [Accepted: 04/19/2024] [Indexed: 04/25/2024] Open
Abstract
This study aimed to examine the viability of human blastocysts after warming with fatty acids (FAs) using an in vitro outgrowth model and to assess pregnancy outcomes after a single vitrified-warmed blastocyst transfer (SVBT). For the experimental study, we used 446 discarded vitrified human blastocysts donated for research purposes by consenting couples. The blastocysts were warmed using FA-supplemented (FA group) or non-FA-supplemented (control group) solutions. The outgrowth area was significantly larger in the FA group (P = 0.0428), despite comparable blastocyst adhesion rates between the groups. Furthermore, the incidence of outgrowth degeneration was significantly lower in the FA group than in the control group (P = 0.0158). For the clinical study, we retrospectively analyzed the treatment records of women who underwent SVBT in natural cycles between January and August 2022. Multiple covariates that affected the outcomes were used for propensity score matching as follows: 1342 patients in the FA group were matched to 2316 patients in the control group. Pregnancy outcomes were compared between the groups. The rates of implantation, clinical pregnancy, and ongoing pregnancy significantly increased in the FA group after SVBTs (P = 0.0091-0.0266). These results indicate that warming solutions supplemented with FAs improve blastocyst outgrowth and pregnancy outcomes after SVBTs.
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Affiliation(s)
- Ayano Sawado
- Kato Ladies Clinic, 7-20-3 Nishishinjuku, Shinjyuku-ku, Tokyo, 160-0023, Japan
| | - Kenji Ezoe
- Kato Ladies Clinic, 7-20-3 Nishishinjuku, Shinjyuku-ku, Tokyo, 160-0023, Japan.
| | - Tetsuya Miki
- Kato Ladies Clinic, 7-20-3 Nishishinjuku, Shinjyuku-ku, Tokyo, 160-0023, Japan
| | - Kazuki Ohata
- Kato Ladies Clinic, 7-20-3 Nishishinjuku, Shinjyuku-ku, Tokyo, 160-0023, Japan
| | - Ayumi Amagai
- Kato Ladies Clinic, 7-20-3 Nishishinjuku, Shinjyuku-ku, Tokyo, 160-0023, Japan
| | - Kiyoe Shimazaki
- Kato Ladies Clinic, 7-20-3 Nishishinjuku, Shinjyuku-ku, Tokyo, 160-0023, Japan
| | - Tadashi Okimura
- Kato Ladies Clinic, 7-20-3 Nishishinjuku, Shinjyuku-ku, Tokyo, 160-0023, Japan
| | - Keiichi Kato
- Kato Ladies Clinic, 7-20-3 Nishishinjuku, Shinjyuku-ku, Tokyo, 160-0023, Japan.
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Morgan PK, Pernes G, Huynh K, Giles C, Paul S, Smith AAT, Mellett NA, Liang A, van Buuren-Milne T, Veiga CB, Collins TJC, Xu Y, Lee MKS, De Silva TM, Meikle PJ, Lancaster GI, Murphy AJ. A lipid atlas of human and mouse immune cells provides insights into ferroptosis susceptibility. Nat Cell Biol 2024; 26:645-659. [PMID: 38589531 DOI: 10.1038/s41556-024-01377-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 02/19/2024] [Indexed: 04/10/2024]
Abstract
The cellular lipidome comprises thousands of unique lipid species. Here, using mass spectrometry-based targeted lipidomics, we characterize the lipid landscape of human and mouse immune cells ( www.cellularlipidatlas.com ). Using this resource, we show that immune cells have unique lipidomic signatures and that processes such as activation, maturation and development impact immune cell lipid composition. To demonstrate the potential of this resource to provide insights into immune cell biology, we determine how a cell-specific lipid trait-differences in the abundance of polyunsaturated fatty acid-containing glycerophospholipids (PUFA-PLs)-influences immune cell biology. First, we show that differences in PUFA-PL content underpin the differential susceptibility of immune cells to ferroptosis. Second, we show that low PUFA-PL content promotes resistance to ferroptosis in activated neutrophils. In summary, we show that the lipid landscape is a defining feature of immune cell identity and that cell-specific lipid phenotypes underpin aspects of immune cell physiology.
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Affiliation(s)
- Pooranee K Morgan
- Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia
- Baker Department of Cardiovascular Research, Translation and Implementation, La Trobe University, Melbourne, Victoria, Australia
| | - Gerard Pernes
- Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia
- Department of Immunology, Monash University, Melbourne, Victoria, Australia
| | - Kevin Huynh
- Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia
- Baker Department of Cardiovascular Research, Translation and Implementation, La Trobe University, Melbourne, Victoria, Australia
- Baker Department of Cardiometabolic Health, University of Melbourne, Melbourne, Victoria, Australia
| | - Corey Giles
- Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia
- Baker Department of Cardiovascular Research, Translation and Implementation, La Trobe University, Melbourne, Victoria, Australia
- Baker Department of Cardiometabolic Health, University of Melbourne, Melbourne, Victoria, Australia
| | - Sudip Paul
- Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia
| | | | | | - Amy Liang
- Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia
| | | | | | - Thomas J C Collins
- Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia
- Department of Immunology, Monash University, Melbourne, Victoria, Australia
| | - Yangsong Xu
- Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia
- Baker Department of Cardiometabolic Health, University of Melbourne, Melbourne, Victoria, Australia
| | - Man K S Lee
- Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia
- Baker Department of Cardiometabolic Health, University of Melbourne, Melbourne, Victoria, Australia
| | - T Michael De Silva
- Department of Microbiology, Anatomy, Physiology and Pharmacology, La Trobe University, Melbourne, Victoria, Australia
| | - Peter J Meikle
- Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia
- Baker Department of Cardiovascular Research, Translation and Implementation, La Trobe University, Melbourne, Victoria, Australia
- Baker Department of Cardiometabolic Health, University of Melbourne, Melbourne, Victoria, Australia
| | - Graeme I Lancaster
- Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia.
- Department of Immunology, Monash University, Melbourne, Victoria, Australia.
- Baker Department of Cardiometabolic Health, University of Melbourne, Melbourne, Victoria, Australia.
| | - Andrew J Murphy
- Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia.
- Baker Department of Cardiovascular Research, Translation and Implementation, La Trobe University, Melbourne, Victoria, Australia.
- Department of Immunology, Monash University, Melbourne, Victoria, Australia.
- Baker Department of Cardiometabolic Health, University of Melbourne, Melbourne, Victoria, Australia.
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