1
|
Zhu J, Zou J, Wu L, Xiong S, Gao Y, Liu J, Huang G, Han W. Total duration of spontaneous blastocyst collapse during the expansion stage is an independent predictor of euploidy and live birth rates. Reprod Biomed Online 2024; 49:103863. [PMID: 38642471 DOI: 10.1016/j.rbmo.2024.103863] [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: 10/19/2023] [Revised: 01/26/2024] [Accepted: 01/30/2024] [Indexed: 04/22/2024]
Abstract
RESEARCH QUESTION Is the total duration of spontaneous blastocyst collapse to re-expansion before biopsy related to ploidy and live birth rates after single euploid blastocyst transfer? DESIGN This was a retrospective cohort study of 600 preimplantation genetic testing cycles for aneuploidy (PGT-A) cycles, involving 2203 biopsied blastocysts, at a large reproductive medicine centre. Features of spontaneous blastocyst collapse from full to expanded stage, before biopsy, were observed using an embryoscope viewer for embryos cultured in a time-lapse incubator. In total, 568 cycles of frozen blastocyst transfers, either single euploid or mosaic, were performed. Correlations between collapse features and PGT-A outcomes were evaluated, as well as live birth rate, following euploid embryo transfer. RESULTS Blastocysts with lower morphological quality or delayed development had significantly higher rates of collapse, multiple collapses, and a longer duration of collapse to re-expansion. After controlling for confounders, such as oocyte age, morphological quality of blastocyst, and day of biopsy, multivariate logistic regression revealed that the total duration of collapse to re-expansion was an independent predictor of lower euploidy rate; the multivariate OR was 0.85 (95% CI 0.77-0.95; P = 0.00). Furthermore, even with euploid embryo transfer, the probability of a live birth decreased as the total duration of collapse to re-expansion increased; the multivariate OR was 0.79 (95% CI 0.64-0.98; P = 0.033). CONCLUSION The total duration of blastocyst collapse to re-expansion could be used as a predictor of lower euploidy and live birth rate. When developing blastocyst algorithms for pregnancy prediction, the duration of spontaneous blastocyst collapse should be included as a significant variable.
Collapse
Affiliation(s)
- Jiahong Zhu
- Chongqing Clinical Research Centre for Reproductive Medicine, Chongqing Health Centre for Women and Children, Chongqing, China; Chongqing Key Laboratory of Human Embryo Engineering, Centre for Reproductive Medicine, Women and Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Jiayi Zou
- Chongqing Clinical Research Centre for Reproductive Medicine, Chongqing Health Centre for Women and Children, Chongqing, China; Chongqing Key Laboratory of Human Embryo Engineering, Centre for Reproductive Medicine, Women and Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Lihong Wu
- Chongqing Clinical Research Centre for Reproductive Medicine, Chongqing Health Centre for Women and Children, Chongqing, China; Chongqing Key Laboratory of Human Embryo Engineering, Centre for Reproductive Medicine, Women and Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Shun Xiong
- Chongqing Clinical Research Centre for Reproductive Medicine, Chongqing Health Centre for Women and Children, Chongqing, China; Chongqing Key Laboratory of Human Embryo Engineering, Centre for Reproductive Medicine, Women and Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Yang Gao
- Chongqing Clinical Research Centre for Reproductive Medicine, Chongqing Health Centre for Women and Children, Chongqing, China; Chongqing Key Laboratory of Human Embryo Engineering, Centre for Reproductive Medicine, Women and Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Junxia Liu
- Chongqing Clinical Research Centre for Reproductive Medicine, Chongqing Health Centre for Women and Children, Chongqing, China; Chongqing Key Laboratory of Human Embryo Engineering, Centre for Reproductive Medicine, Women and Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Guoning Huang
- Chongqing Clinical Research Centre for Reproductive Medicine, Chongqing Health Centre for Women and Children, Chongqing, China; Chongqing Key Laboratory of Human Embryo Engineering, Centre for Reproductive Medicine, Women and Children's Hospital of Chongqing Medical University, Chongqing, China.
| | - Wei Han
- Chongqing Clinical Research Centre for Reproductive Medicine, Chongqing Health Centre for Women and Children, Chongqing, China; Chongqing Key Laboratory of Human Embryo Engineering, Centre for Reproductive Medicine, Women and Children's Hospital of Chongqing Medical University, Chongqing, China.
| |
Collapse
|
2
|
Piszker W, Simunovic M. The fusion of physics and biology in early mammalian embryogenesis. Curr Top Dev Biol 2024; 160:31-64. [PMID: 38937030 DOI: 10.1016/bs.ctdb.2024.05.001] [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: 06/29/2024]
Abstract
Biomechanics in embryogenesis is a dynamic field intertwining the physical forces and biological processes that shape the first days of a mammalian embryo. From the first cell fate bifurcation during blastulation to the complex symmetry breaking and tissue remodeling in gastrulation, mechanical cues appear critical in cell fate decisions and tissue patterning. Recent strides in mouse and human embryo culture, stem cell modeling of mammalian embryos, and biomaterial design have shed light on the role of cellular forces, cell polarization, and the extracellular matrix in influencing cell differentiation and morphogenesis. This chapter highlights the essential functions of biophysical mechanisms in blastocyst formation, embryo implantation, and early gastrulation where the interplay between the cytoskeleton and extracellular matrix stiffness orchestrates the intricacies of embryogenesis and placenta specification. The advancement of in vitro models like blastoids, gastruloids, and other types of embryoids, has begun to faithfully recapitulate human development stages, offering new avenues for exploring the biophysical underpinnings of early development. The integration of synthetic biology and advanced biomaterials is enhancing the precision with which we can mimic and study these processes. Looking ahead, we emphasize the potential of CRISPR-mediated genomic perturbations coupled with live imaging to uncover new mechanosensitive pathways and the application of engineered biomaterials to fine-tune the mechanical conditions conducive to embryonic development. This synthesis not only bridges the gap between experimental models and in vivo conditions to advancing fundamental developmental biology of mammalian embryogenesis, but also sets the stage for leveraging biomechanical insights to inform regenerative medicine.
Collapse
Affiliation(s)
- Walter Piszker
- Department of Chemical Engineering, Fu Foundation School of Engineering and Applied Sciences, Columbia University, New York, NY, United States; Columbia Stem Cell Initiative, Columbia University Irving Medical Center, New York, NY, United States
| | - Mijo Simunovic
- Department of Chemical Engineering, Fu Foundation School of Engineering and Applied Sciences, Columbia University, New York, NY, United States; Columbia Stem Cell Initiative, Columbia University Irving Medical Center, New York, NY, United States; Department of Genetics and Development, Columbia Irving Medical Center, New York, NY, United States.
| |
Collapse
|
3
|
Shim G, Breinyn IB, Martínez-Calvo A, Rao S, Cohen DJ. Bioelectric stimulation controls tissue shape and size. Nat Commun 2024; 15:2938. [PMID: 38580690 PMCID: PMC10997591 DOI: 10.1038/s41467-024-47079-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: 01/30/2024] [Accepted: 03/20/2024] [Indexed: 04/07/2024] Open
Abstract
Epithelial tissues sheath organs and electro-mechanically regulate ion and water transport to regulate development, homeostasis, and hydrostatic organ pressure. Here, we demonstrate how external electrical stimulation allows us to control these processes in living tissues. Specifically, we electrically stimulate hollow, 3D kidneyoids and gut organoids and find that physiological-strength electrical stimulation of ∼ 5 - 10 V/cm powerfully inflates hollow tissues; a process we call electro-inflation. Electro-inflation is mediated by increased ion flux through ion channels/transporters and triggers subsequent osmotic water flow into the lumen, generating hydrostatic pressure that competes against cytoskeletal tension. Our computational studies suggest that electro-inflation is strongly driven by field-induced ion crowding on the outer surface of the tissue. Electrically stimulated tissues also break symmetry in 3D resulting from electrotaxis and affecting tissue shape. The ability of electrical cues to regulate tissue size and shape emphasizes the role and importance of the electrical micro-environment for living tissues.
Collapse
Affiliation(s)
- Gawoon Shim
- Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, 08540, NJ, USA
| | - Isaac B Breinyn
- Department of Quantitative and Computational Biology, Princeton University, Princeton, 08540, NJ, USA
| | - Alejandro Martínez-Calvo
- Princeton Center for Theoretical Science, Princeton University, Princeton, 08540, NJ, USA
- Department of Chemical and Biological Engineering, Princeton University, Princeton, 08540, NJ, USA
| | - Sameeksha Rao
- Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, 08540, NJ, USA
| | - Daniel J Cohen
- Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, 08540, NJ, USA.
| |
Collapse
|
4
|
Bovyn MJ, Haas PA. Shaping epithelial lumina under pressure. Biochem Soc Trans 2024; 52:BST20230632C. [PMID: 38415294 PMCID: PMC10903447 DOI: 10.1042/bst20230632c] [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: 11/16/2023] [Revised: 02/07/2024] [Accepted: 02/08/2024] [Indexed: 02/29/2024]
Abstract
The formation of fluid- or gas-filled lumina surrounded by epithelial cells pervades development and disease. We review the balance between lumen pressure and mechanical forces from the surrounding cells that governs lumen formation. We illustrate the mechanical side of this balance in several examples of increasing complexity, and discuss how recent work is beginning to elucidate how nonlinear and active mechanics and anisotropic biomechanical structures must conspire to overcome the isotropy of pressure to form complex, non-spherical lumina.
Collapse
Affiliation(s)
- Matthew J. Bovyn
- Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Straße 38, 01187 Dresden, Germany
- Max Planck Institute of Molecular Cell Biology and Genetics, Pfotenhauerstraße 108, 01307 Dresden, Germany
- Center for Systems Biology Dresden, Pfotenhauerstraße 108, 01307 Dresden, Germany
| | - Pierre A. Haas
- Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Straße 38, 01187 Dresden, Germany
- Max Planck Institute of Molecular Cell Biology and Genetics, Pfotenhauerstraße 108, 01307 Dresden, Germany
- Center for Systems Biology Dresden, Pfotenhauerstraße 108, 01307 Dresden, Germany
| |
Collapse
|
5
|
Dinet C, Torres-Sánchez A, Lanfranco R, Di Michele L, Arroyo M, Staykova M. Patterning and dynamics of membrane adhesion under hydraulic stress. Nat Commun 2023; 14:7445. [PMID: 37978292 PMCID: PMC10656516 DOI: 10.1038/s41467-023-43246-7] [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: 04/30/2023] [Accepted: 11/02/2023] [Indexed: 11/19/2023] Open
Abstract
Hydraulic fracturing plays a major role in cavity formation during embryonic development, when pressurized fluid opens microlumens at cell-cell contacts, which evolve to form a single large lumen. However, the fundamental physical mechanisms behind these processes remain masked by the complexity and specificity of biological systems. Here, we show that adhered lipid vesicles subjected to osmotic stress form hydraulic microlumens similar to those in cells. Combining vesicle experiments with theoretical modelling and numerical simulations, we provide a physical framework for the hydraulic reconfiguration of cell-cell adhesions. We map the conditions for microlumen formation from a pristine adhesion, the emerging dynamical patterns and their subsequent maturation. We demonstrate control of the fracturing process depending on the applied pressure gradients and the type and density of membrane bonds. Our experiments further reveal an unexpected, passive transition of microlumens to closed buds that suggests a physical route to adhesion remodeling by endocytosis.
Collapse
Affiliation(s)
- Céline Dinet
- Department of Physics, Durham University, Durham, UK
- Laboratoire de Chimie Bactérienne, Institut de Microbiologie de la Méditerranée, CNRS-Aix-Marseille University, 31 Chemin Joseph Aiguier, 13009, Marseille, France
| | - Alejandro Torres-Sánchez
- Universitat Politècnica de Catalunya-BarcelonaTech, 08034, Barcelona, Spain
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, 08028, Barcelona, Spain
- European Molecular Biology Laboratory (EMBL-Barcelona), 08003, Barcelona, Spain
| | - Roberta Lanfranco
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | - Lorenzo Di Michele
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK
- Department of Chemistry, Imperial College of London, London, UK
| | - Marino Arroyo
- Universitat Politècnica de Catalunya-BarcelonaTech, 08034, Barcelona, Spain.
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, 08028, Barcelona, Spain.
- Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 08034, Barcelona, Spain.
| | | |
Collapse
|
6
|
Moratal S, Zrzavá M, Hrabar J, Dea-Ayuela MA, López-Ramon J, Mladineo I. Fecundity, in vitro early larval development and karyotype of the zoonotic nematode Anisakis pegreffii. Vet Parasitol 2023; 323:110050. [PMID: 37837730 DOI: 10.1016/j.vetpar.2023.110050] [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: 06/11/2023] [Revised: 09/27/2023] [Accepted: 10/07/2023] [Indexed: 10/16/2023]
Abstract
The in vitro life cycle of zoonotic helminths is an essential tool for -omic translational studies focused on disease control and treatment. Anisakiosis is an emerging zoonosis contracted by the ingestion of raw or undercooked fish infected with the third stage larvae (L3) of two sibling species Anisakis simplex sensu stricto (s.s.) and Anisakis pegreffii, the latter being the predominant species in the Mediterranean basin. Recently, in vitro culture of A. pegreffii has been developed to enable fast and large-scale production of fertile adults. However, the conditions for larval development from hatching to infective L3 were not fulfilled to complete the cycle. Herein, we used a Drosophila medium supplemented with chicken serum and adjusted different osmolarities to maintain the culture of L3 hatched from eggs for up to 17 weeks. The highest survival rate was observed in the medium with the highest osmolarities, which also allowed the highest larval exsheathment rate. Key morphological features of embryogenesis and postembryogenesis studied by transmission electron microscopy revealed that the excretory gland cell is differentiated already up to 48 h post-hatching. Extracellular vesicles and cell-free mitochondria are discharged between the two cuticle sheets of the second stage larvae (L2). Contemporarly cultivated, two populations of adult A. simplex s.s. and A. pegreffii reached an average production of 29,914.05 (± 27,629.36) and 24,370.96 (± 12,564.86) eggs/day/female, respectively. The chromosome spreads of A. pegreffii obtained from mature gonads suggests a diploid karyotype formula of 2n = 18. The development of a reliable protocol for the in vitro culture of a polyxenous nematode such as Anisakis spp. will serve to screen for much needed novel drug targets, but also to study the intricated and unknown ecological and physiological traits of these trophically transmitted marine nematodes.
Collapse
Affiliation(s)
- Samantha Moratal
- Laboratory of Functional Helminthology, Institute of Parasitology, Biology Centre Czech Academy of Sciences, Branišovská 1160/31, 37005 České Budějovice, Czechia; Servicio de Análisis, Investigación y Gestión de Animales Silvestres (SAIGAS), Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities, C/ Tirant lo Blanc, Alfara del Patriarca, 46115 Valencia, Spain.
| | - Magda Zrzavá
- Faculty of Science, University of South Bohemia, Branišovská 1760/31a, 37005, České Budějovice, Czechia; Institute of Entomology, Biology Centre Czech Academy of Sciences, Branišovská 1160/31, 37005, České Budějovice, Czechia
| | - Jerko Hrabar
- Laboratory of Aquaculture, Institute of Oceanography and Fisheries, 21000 Split, Croatia
| | - María Auxiliadora Dea-Ayuela
- Departamento de Farmacia, Facultad de Ciencias de la Salud, Universidad Cardenal Herrera-CEU, CEU Universitites, C/ Santiago Ramón y Cajal, Alfara del Patriarca, 46115 Valencia, Spain
| | - Jordi López-Ramon
- Servicio de Análisis, Investigación y Gestión de Animales Silvestres (SAIGAS), Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities, C/ Tirant lo Blanc, Alfara del Patriarca, 46115 Valencia, Spain; Wildlife Ecology & Health Group (WE&H), Facultat de Veterinària, Universitat Autònoma de Barcelona (UAB), Travessera dels Turons, Bellaterra, 08193 Barcelona, Spain
| | - Ivona Mladineo
- Laboratory of Functional Helminthology, Institute of Parasitology, Biology Centre Czech Academy of Sciences, Branišovská 1160/31, 37005 České Budějovice, Czechia
| |
Collapse
|
7
|
Bickendorf K, Qi F, Peirce K, Natalwala J, Chapple V, Liu Y. Spontaneous collapse as a prognostic marker for human blastocysts: a systematic review and meta-analysis. Hum Reprod 2023; 38:1891-1900. [PMID: 37581900 PMCID: PMC10546075 DOI: 10.1093/humrep/dead166] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 08/01/2023] [Indexed: 08/16/2023] Open
Abstract
STUDY QUESTION Is spontaneous collapse (SC) by human blastocysts a prognostic factor in IVF treatment? SUMMARY ANSWER SC in human blastocyst is associated with reduced euploid embryo and pregnancy rates. WHAT IS KNOWN ALREADY SC of the human blastocyst is a phenomenon that was revealed relatively recently following the clinical application of time-lapse monitoring in IVF laboratories. The ploidy and clinical prognosis of affected blastocysts are still poorly understood, with inconsistent reports. Systematic reviews and meta-analyses on this topic are currently absent in the literature but its potential as a marker of embryo viability holds great clinical value. In this study, we aimed to comprehensively evaluate the potential of SC as a prognostic factor in regard to ploidy status, and pregnancy, live birth and miscarriage rates. STUDY DESIGN, SIZE, DURATION A systematic review and meta-analysis were performed according to PRISMA guidelines, with a protocol registered with PROSPERO (CRD42022373749). A search of MEDLINE, EMBASE, and the Cochrane Library for relevant studies was carried out on 10 October 2022, using key words relevant to 'blastocyst collapse' and 'time-lapse imaging'. PARTICIPANTS/MATERIALS, SETTING, METHODS Two independent reviewers systematically screened and evaluated each study in terms of participants, exposure, comparator, and outcomes (PECO). The Quality In Prognosis Studies tool was used for quality assessment. Data were extracted according to Cochrane methods. Pregnancy, live birth, ploidy, or miscarriage data were summarized by risk ratios (RRs) or odds ratios and their 95% CIs. All meta-analyses were performed with random-effects models. MAIN RESULTS AND THE ROLE OF CHANCE Following removal of duplicates, a total of 196 records were identified by the initial search. After screening according to PECO, 19 articles were included for further eligibility assessment. For meta-analysis, seven retrospective cohort studies were eventually included. After data pooling, the incidence of blastocyst SC was 37.0% (2516/6801) among seven studies (ranging from 17.4% to 56.2%). SC was associated with significantly lower clinical pregnancy rates (two studies, n = 736; RR = 0.77, 95% CI = 0.62-0.95; I2 = 30%), ongoing pregnancy rates (five studies, n = 2503; RR = 0.66, 95% CI = 0.53-0.83; I2 = 60%), and reduced euploidy rates (three studies, n = 3569; RR = 0.70, 95% CI = 0.59-0.83; I2 = 69%). Nevertheless, live birth rates (two studies, n = 816; RR = 0.76, 95% CI = 0.55-1.04; I2 = 56%) and miscarriage rate (four studies, n = 1358; RR = 1.31, 95% CI = 0.95-1.80; I2 = 0%) did not differ between blastocysts with or without SC. There was, however, significant heterogeneity between the studies included for evaluation of ongoing pregnancy rates (I2 = 60%, P = 0.04), live birth rates (I2 = 56%, P = 0.13), and ploidy rates (I2 = 69%, P = 0.04). Subgroup analyses were conducted according to different definitions of SC, number of collapse events, and whether the transferred blastocyst had undergone preimplantation genetic testing for aneuploidy; with inconclusive findings across subgroups. LIMITATIONS, REASONS FOR CAUTION All studies in the meta-analysis were retrospective with varying levels of heterogeneity for different outcomes. Not all studies had accounted for potential confounding factors, therefore only unadjusted data could be used in the main meta-analysis. Studies employed slightly different strategies when defining blastocyst SC. Standardization in the definition for SC is needed to improve comparability between future studies. WIDER IMPLICATIONS OF THE FINDINGS Our results indicate that blastocyst SC has negative implications for a pregnancy. Such blastocysts should be given a low ranking when selecting from a cohort for intrauterine transfer. Blastocyst SC should be considered as a contributing variable when building blastocyst algorithms to predict pregnancy or live birth. STUDY FUNDING/COMPETING INTEREST(S) There is no external funding to report. All authors report no conflict of interest. REGISTRATION NUMBER PROSPERO 2022 CRD42022373749.
Collapse
Affiliation(s)
| | - Fang Qi
- Systematic Review Solutions Ltd, Shanghai, China
| | - Kelli Peirce
- Fertility North, Joondalup, Western Australia, Australia
| | - Jay Natalwala
- Fertility North, Joondalup, Western Australia, Australia
| | | | - Yanhe Liu
- Fertility North, Joondalup, Western Australia, Australia
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia
- School of Human Sciences, University of Western Australia, Crawley, Western Australia, Australia
- School of Health Sciences and Medicine, Bond University, Robina, Queensland, Australia
| |
Collapse
|
8
|
Ali O, Cheddadi I, Landrein B, Long Y. Revisiting the relationship between turgor pressure and plant cell growth. THE NEW PHYTOLOGIST 2023; 238:62-69. [PMID: 36527246 DOI: 10.1111/nph.18683] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 11/23/2022] [Indexed: 06/17/2023]
Abstract
Growth is central to plant morphogenesis. Plant cells are encased in rigid cell walls, and they must overcome physical confinement to grow to specific sizes and shapes. Cell wall tension and turgor pressure are the main mechanical components impacting plant cell growth. Cell wall mechanics has been the focus of most plant biomechanical studies, and turgor pressure was often considered as a constant and largely passive component. Nevertheless, it is increasingly accepted that turgor pressure plays a significant role in plant growth. Numerous theoretical and experimental studies suggest that turgor pressure can be both spatially inhomogeneous and actively modulated during morphogenesis. Here, we revisit the pressure-growth relationship by reviewing recent advances in investigating the interactions between cellular/tissular pressure and growth.
Collapse
Affiliation(s)
- Olivier Ali
- Laboratoire Reproduction et Développement des Plantes, Université de Lyon, ENS de Lyon, UCB Lyon 1, CNRS, INRAE, INRIA, Lyon Cedex 07, 69364, France
| | - Ibrahim Cheddadi
- Laboratoire Reproduction et Développement des Plantes, Université de Lyon, ENS de Lyon, UCB Lyon 1, CNRS, INRAE, INRIA, Lyon Cedex 07, 69364, France
- Univ. Grenoble Alpes, CNRS, UMR 5525, VetAgro Sup, Grenoble INP, TIMC, 38000, Grenoble, France
| | - Benoit Landrein
- Laboratoire Reproduction et Développement des Plantes, Université de Lyon, ENS de Lyon, UCB Lyon 1, CNRS, INRAE, INRIA, Lyon Cedex 07, 69364, France
| | - Yuchen Long
- Department of Biological Sciences, The National University of Singapore, Singapore, 117543, Singapore
- Mechanobiology Institute, The National University of Singapore, Singapore, 117411, Singapore
| |
Collapse
|
9
|
Choudhury MI, Benson MA, Sun SX. Trans-epithelial fluid flow and mechanics of epithelial morphogenesis. Semin Cell Dev Biol 2022; 131:146-159. [PMID: 35659163 DOI: 10.1016/j.semcdb.2022.05.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 05/22/2022] [Accepted: 05/23/2022] [Indexed: 12/14/2022]
Abstract
Active fluid transport across epithelial monolayers is emerging as a major driving force of tissue morphogenesis in a variety of healthy and diseased systems, as well as during embryonic development. Cells use directional transport of ions and osmotic gradients to drive fluid flow across the cell surface, in the process also building up fluid pressure. The basic physics of this process is described by the osmotic engine model, which also underlies actin-independent cell migration. Recently, the trans-epithelial fluid flux and the hydraulic pressure gradient have been explicitly measured for a variety of cellular and tissue model systems across various species. For the kidney, it was shown that tubular epithelial cells behave as active mechanical fluid pumps: the trans-epithelial fluid flux depends on the hydraulic pressure difference across the epithelial layer. When a stall pressure is reached, the fluid flux vanishes. Hydraulic forces generated from active fluid pumping are important in tissue morphogenesis and homeostasis, and could also underlie multiple morphogenic events seen in other developmental contexts. In this review, we highlight findings that examined the role of trans-epithelial fluid flux and hydraulic pressure gradient in driving tissue-scale morphogenesis. We also review organ pathophysiology due to impaired fluid pumping and the loss of hydraulic pressure sensing at the cellular scale. Finally, we draw an analogy between cellular fluidic pumps and a connected network of water pumps in a city. The dynamics of fluid transport in an active and adaptive network is determined globally at the systemic level, and transport in such a network is best when each pump is operating at its optimal efficiency.
Collapse
Affiliation(s)
- Mohammad Ikbal Choudhury
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218, United States; Institute of NanoBioTechnology, Johns Hopkins University, Baltimore, MD 21218, United States; Department of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, United States
| | - Morgan A Benson
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21218, United States; Institute of NanoBioTechnology, Johns Hopkins University, Baltimore, MD 21218, United States
| | - Sean X Sun
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218, United States; Institute of NanoBioTechnology, Johns Hopkins University, Baltimore, MD 21218, United States; Center for Cell Dynamics, Johns Hopkins University, Baltimore, MD 21218, United States.
| |
Collapse
|
10
|
Fuji K, Tanida S, Sano M, Nonomura M, Riveline D, Honda H, Hiraiwa T. Computational approaches for simulating luminogenesis. Semin Cell Dev Biol 2022; 131:173-185. [PMID: 35773151 DOI: 10.1016/j.semcdb.2022.05.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 05/24/2022] [Accepted: 05/24/2022] [Indexed: 12/14/2022]
Abstract
Lumens, liquid-filled cavities surrounded by polarized tissue cells, are elementary units involved in the morphogenesis of organs. Theoretical modeling and computations, which can integrate various factors involved in biophysics of morphogenesis of cell assembly and lumens, may play significant roles to elucidate the mechanisms in formation of such complex tissue with lumens. However, up to present, it has not been documented well what computational approaches or frameworks can be applied for this purpose and how we can choose the appropriate approach for each problem. In this review, we report some typical lumen morphologies and basic mechanisms for the development of lumens, focusing on three keywords - mechanics, hydraulics and geometry - while outlining pros and cons of the current main computational strategies. We also describe brief guidance of readouts, i.e., what we should measure in experiments to make the comparison with the model's assumptions and predictions.
Collapse
Affiliation(s)
- Kana Fuji
- Universal Biology Institute, Graduate School of Science, the University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Sakurako Tanida
- Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, Japan
| | - Masaki Sano
- Institute of Natural Sciences, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Makiko Nonomura
- Department of Mathematical Information Engineering, College of Industrial Technology, Nihon University, 1-2-1 Izumicho, Narashino-shi, Chiba 275-8575, Japan
| | - Daniel Riveline
- Laboratory of Cell Physics IGBMC, CNRS, INSERM and Université de Strasbourg, Strasbourg, France
| | - Hisao Honda
- Division of Cell Physiology, Department of Physiology and Cell Biology, Graduate School of Medicine Kobe University, Kobe, Hyogo, Japan
| | - Tetsuya Hiraiwa
- Mechanobiology Institute, Singapore, National University of Singapore, 117411, Singapore.
| |
Collapse
|
11
|
Bagnat M, Daga B, Di Talia S. Morphogenetic Roles of Hydrostatic Pressure in Animal Development. Annu Rev Cell Dev Biol 2022; 38:375-394. [PMID: 35804476 PMCID: PMC9675319 DOI: 10.1146/annurev-cellbio-120320-033250] [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] [Indexed: 11/09/2022]
Abstract
During organismal development, organs and systems are built following a genetic blueprint that produces structures capable of performing specific physiological functions. Interestingly, we have learned that the physiological activities of developing tissues also contribute to their own morphogenesis. Specifically, physiological activities such as fluid secretion and cell contractility generate hydrostatic pressure that can act as a morphogenetic force. Here, we first review the role of hydrostatic pressure in tube formation during animal development and discuss mathematical models of lumen formation. We then illustrate specific roles of the notochord as a hydrostatic scaffold in anterior-posterior axis development in chordates. Finally, we cover some examples of how fluid flows influence morphogenetic processes in other developmental contexts. Understanding how fluid forces act during development will be key for uncovering the self-organizing principles that control morphogenesis.
Collapse
Affiliation(s)
- Michel Bagnat
- Department of Cell Biology, Duke University, Durham, North Carolina, USA;
| | - Bijoy Daga
- Department of Cell Biology, Duke University, Durham, North Carolina, USA;
| | - Stefano Di Talia
- Department of Cell Biology, Duke University, Durham, North Carolina, USA;
- Department of Orthopaedic Surgery, Duke University, Durham, North Carolina, USA
| |
Collapse
|
12
|
Cimadomo D, Marconetto A, Trio S, Chiappetta V, Innocenti F, Albricci L, Erlich I, Ben-Meir A, Har-Vardi I, Kantor B, Sakov A, Coticchio G, Borini A, Ubaldi FM, Rienzi L. Human blastocyst spontaneous collapse is associated with worse morphological quality and higher degeneration and aneuploidy rates: a comprehensive analysis standardized through artificial intelligence. Hum Reprod 2022; 37:2291-2306. [PMID: 35939563 DOI: 10.1093/humrep/deac175] [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: 04/01/2022] [Revised: 07/12/2022] [Indexed: 11/13/2022] Open
Abstract
STUDY QUESTION What are the factors associated with human blastocyst spontaneous collapse and the consequences of this event? SUMMARY ANSWER Approximately 50% of blastocysts collapsed, especially when non-viable, morphologically poor and/or aneuploid. WHAT IS KNOWN ALREADY Time-lapse microscopy (TLM) is a powerful tool to observe preimplantation development dynamics. Lately, artificial intelligence (AI) has been harnessed to automate and standardize such observations. Here, we adopted AI to comprehensively portray blastocyst spontaneous collapse, namely the phenomenon of reduction in size of the embryo accompanied by efflux of blastocoel fluid and the detachment of the trophectoderm (TE) from the zona pellucida (ZP). Although the underlying causes are unknown, blastocyst spontaneous collapse deserves attention as a possible marker of reduced competence. STUDY DESIGN, SIZE, DURATION An observational study was carried out, including 2348 TLM videos recorded during preimplantation genetic testing for aneuploidies (PGT-A, n = 720) cycles performed between January 2013 and December 2020. All embryos in the analysis at least reached the time of starting blastulation (tSB), 1943 of them reached full expansion, and were biopsied and then vitrified. PARTICIPANTS/MATERIALS, SETTING, METHODS ICSI, blastocyst culture, TE biopsy without Day 3 ZP drilling, comprehensive chromosome testing and vitrification were performed. The AI software automatically registered tSB and time of expanding blastocyst (tEB), start and end time of each collapse, time between consecutive collapses, embryo proper area, percentage of shrinkage, embryo:ZP ratio at embryo collapse, time of biopsy (t-biopsy) and related area of the fully (re-)expanded blastocyst before biopsy, time between the last collapse and biopsy. Blastocyst morphological quality was defined according to both Gardner's criteria and an AI-generated implantation score. Euploidy rate per biopsied blastocyst and live birth rate (LBR) per euploid single embryo transfer (SET) were the main outcomes. All significant associations were confirmed through regression analyses. All couple, cycle and embryo main features were also investigated for possible associations with blastocyst spontaneous collapse. MAIN RESULTS AND THE ROLE OF CHANCE At least one collapsing embryo (either viable or subsequently undergoing degeneration) was recorded in 559 cycles (77.6%) and in 498 cycles (69.2%) if considering only viable blastocysts. The prevalence of blastocyst spontaneous collapse after the tSB, but before the achievement of full expansion, was 50% (N = 1168/2348), irrespective of cycle and/or couple characteristics. Blastocyst degeneration was 13% among non-collapsing embryos, while it was 18%, 20%, 26% and 39% among embryos collapsing once, twice, three times or ≥4 times, respectively. The results showed that 47.3% (N = 918/1943) of the viable blastocysts experienced at least one spontaneous collapse (ranging from 1 up to 9). Although starting from similar tSB, the number of spontaneous collapses was associated with a delay in both tEB and time of biopsy. Of note, the worse the quality of a blastocyst, the more and the longer its spontaneous collapses. Blastocyst spontaneous collapse was significantly associated with lower euploidy rates (47% in non-collapsing and 38%, 32%, 31% and 20% in blastocysts collapsing once, twice, three times or ≥4 times, respectively; multivariate odds ratio 0.78, 95%CI 0.62-0.98, adjusted P = 0.03). The difference in the LBR after euploid vitrified-warmed SET was not significant (46% and 39% in non-collapsing and collapsing blastocysts, respectively). LIMITATIONS, REASONS FOR CAUTION An association between chromosomal mosaicism and blastocyst collapse cannot be reliably assessed on a single TE biopsy. Gestational and perinatal outcomes were not evaluated. Other culture strategies and media should be tested for their association with blastocyst spontaneous collapse. Future studies with a larger sample size are needed to investigate putative impacts on clinical outcomes after euploid transfers. WIDER IMPLICATIONS OF THE FINDINGS These results demonstrate the synergistic power of TLM and AI to increase the throughput of embryo preimplantation development observation. They also highlight the transition from compaction to full blastocyst as a delicate morphogenetic process. Blastocyst spontaneous collapse is common and associates with inherently lower competence, but additional data are required to deepen our knowledge on its causes and consequences. STUDY FUNDING/COMPETING INTEREST(S) There is no external funding to report. I.E., A.B.-M., I.H.-V. and B.K. are Fairtility employees. I.E. and B.K. also have stock or stock options of Fairtility. TRIAL REGISTRATION NUMBER N/A.
Collapse
Affiliation(s)
| | - Anabella Marconetto
- University Institute of Reproductive Medicine, National University of Córdoba, Córdoba, Argentina
| | | | | | | | | | | | - Assaf Ben-Meir
- Fairtilty Ltd, Tel Aviv, Israel.,IVF Unit, Department of Obstetrics and Gynecology, Hadassah Medical Organization and Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Iris Har-Vardi
- Fairtilty Ltd, Tel Aviv, Israel.,Fertility and IVF unit, Department of Obstetrics and Gynecology, Soroka University Medical Center and the Faculty of Health Sciences Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | | | | | | | | | | | - Laura Rienzi
- GeneraLife IVF, Clinica Valle Giulia, Rome, Italy.,Department of Biomolecular Sciences, University of Urbino "Carlo Bo", Urbino, Italy
| |
Collapse
|
13
|
Ichikawa T, Zhang HT, Panavaite L, Erzberger A, Fabrèges D, Snajder R, Wolny A, Korotkevich E, Tsuchida-Straeten N, Hufnagel L, Kreshuk A, Hiiragi T. An ex vivo system to study cellular dynamics underlying mouse peri-implantation development. Dev Cell 2022; 57:373-386.e9. [PMID: 35063082 PMCID: PMC8826647 DOI: 10.1016/j.devcel.2021.12.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 08/23/2021] [Accepted: 12/23/2021] [Indexed: 01/09/2023]
Abstract
Upon implantation, mammalian embryos undergo major morphogenesis and key developmental processes such as body axis specification and gastrulation. However, limited accessibility obscures the study of these crucial processes. Here, we develop an ex vivo Matrigel-collagen-based culture to recapitulate mouse development from E4.5 to E6.0. Our system not only recapitulates embryonic growth, axis initiation, and overall 3D architecture in 49% of the cases, but its compatibility with light-sheet microscopy also enables the study of cellular dynamics through automatic cell segmentation. We find that, upon implantation, release of the increasing tension in the polar trophectoderm is necessary for its constriction and invagination. The resulting extra-embryonic ectoderm plays a key role in growth, morphogenesis, and patterning of the neighboring epiblast, which subsequently gives rise to all embryonic tissues. This 3D ex vivo system thus offers unprecedented access to peri-implantation development for in toto monitoring, measurement, and spatiotemporally controlled perturbation, revealing a mechano-chemical interplay between extra-embryonic and embryonic tissues.
Collapse
Affiliation(s)
- Takafumi Ichikawa
- European Molecular Biology Laboratory (EMBL), 69117 Heidelberg, Germany
| | - Hui Ting Zhang
- European Molecular Biology Laboratory (EMBL), 69117 Heidelberg, Germany; Collaboration for PhD degree between EMBL and Heidelberg University, Faculty of Biosciences, Heidelberg, Germany
| | - Laura Panavaite
- European Molecular Biology Laboratory (EMBL), 69117 Heidelberg, Germany; Collaboration for PhD degree between EMBL and Heidelberg University, Faculty of Biosciences, Heidelberg, Germany
| | - Anna Erzberger
- European Molecular Biology Laboratory (EMBL), 69117 Heidelberg, Germany.
| | - Dimitri Fabrèges
- European Molecular Biology Laboratory (EMBL), 69117 Heidelberg, Germany
| | - Rene Snajder
- European Molecular Biology Laboratory (EMBL), 69117 Heidelberg, Germany
| | - Adrian Wolny
- European Molecular Biology Laboratory (EMBL), 69117 Heidelberg, Germany
| | | | | | - Lars Hufnagel
- European Molecular Biology Laboratory (EMBL), 69117 Heidelberg, Germany
| | - Anna Kreshuk
- European Molecular Biology Laboratory (EMBL), 69117 Heidelberg, Germany
| | - Takashi Hiiragi
- European Molecular Biology Laboratory (EMBL), 69117 Heidelberg, Germany; Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, 606-8501 Kyoto, Japan.
| |
Collapse
|
14
|
Herrera-Delgado E, Maître JL. A theoretical understanding of mammalian preimplantation development. Cells Dev 2021; 168:203752. [PMID: 34634520 DOI: 10.1016/j.cdev.2021.203752] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 09/30/2021] [Accepted: 09/30/2021] [Indexed: 11/28/2022]
Abstract
The blastocyst has long been a hallmark system of study in developmental biology due to its importance in mammalian development and clinical relevance for assisted reproductive technologies. In recent years, the blastocyst is emerging as a system of study for mathematical modelling. In this review, we compile, to our knowledge, all models describing preimplantation development. Coupled with experiments, these models have provided insight regarding the morphogenesis and cell-fate specification throughout preimplantation development. In the case of cell-fate specification, theoretical models have provided mechanisms explaining how proportion of cell types are established and maintained when confronted to perturbations. For cell-shape based models, they have described quantitatively how mechanical forces sculpt the blastocyst and even predicted how morphogenesis could be manipulated. As theoretical biology develops, we believe the next critical stage in modelling involves an integration of cell fate and mechanics to provide integrative models of development at distinct spatiotemporal scales. We discuss how, building on a balanced base of mechanical and chemical models, the preimplantation embryo will play a key role in integrating these two faces of the same coin.
Collapse
Affiliation(s)
| | - Jean-Léon Maître
- Institut Curie, PSL Research University, CNRS UMR3215, INSERM U934, Paris, France.
| |
Collapse
|
15
|
Torres-Sánchez A, Winter MK, Salbreux G. Tissue hydraulics: Physics of lumen formation and interaction. Cells Dev 2021; 168:203724. [PMID: 34339904 DOI: 10.1016/j.cdev.2021.203724] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 07/08/2021] [Accepted: 07/20/2021] [Indexed: 11/29/2022]
Abstract
Lumen formation plays an essential role in the morphogenesis of tissues during development. Here we review the physical principles that play a role in the growth and coarsening of lumens. Solute pumping by the cell, hydraulic flows driven by differences of osmotic and hydrostatic pressures, balance of forces between extracellular fluids and cell-generated cytoskeletal forces, and electro-osmotic effects have been implicated in determining the dynamics and steady-state of lumens. We use the framework of linear irreversible thermodynamics to discuss the relevant force, time and length scales involved in these processes. We focus on order of magnitude estimates of physical parameters controlling lumen formation and coarsening.
Collapse
Affiliation(s)
| | - Max Kerr Winter
- The Francis Crick Institute, 1 Midland Road, NW1 1AT, United Kingdom
| | - Guillaume Salbreux
- The Francis Crick Institute, 1 Midland Road, NW1 1AT, United Kingdom; University of Geneva, Quai Ernest Ansermet 30, 1205 Genève, Switzerland.
| |
Collapse
|