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Jin H, Han Y, Zenker J. Cellular mechanisms of monozygotic twinning: clues from assisted reproduction. Hum Reprod Update 2024:dmae022. [PMID: 38996087 DOI: 10.1093/humupd/dmae022] [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: 02/05/2024] [Revised: 06/06/2024] [Indexed: 07/14/2024] Open
Abstract
BACKGROUND Monozygotic (MZ) twins are believed to arise from the fission of a single fertilized embryo at different stages. Monochorionic MZ twins, who share one chorion, originate from the splitting of the inner cell mass (ICM) within a single blastocyst. In the classic model for dichorionic MZ twins, the embryo splits before compaction, developing into two blastocysts. However, there are a growing number of ART cases where a single blastocyst transfer results in dichorionic MZ twins, indicating that embryo splitting may occur even after blastocyst formation. OBJECTIVE AND RATIONALE For monochorionic MZ twins, we conducted a comprehensive analysis of the cellular mechanisms involved in ICM splitting, drawing from both ART cases and animal experiments. In addition, we critically re-examine the classic early splitting model for dichorionic MZ twins. We explore cellular mechanisms leading to two separated blastocysts in ART, potentially causing dichorionic MZ twins. SEARCH METHODS Relevant studies including research articles, reviews, and conference papers were searched in the PubMed database. Cases of MZ twins from IVF clinics were found by using combinations of terms including 'monozygotic twins' with 'IVF case report', 'ART', 'single embryo transfer', or 'dichorionic'. The papers retrieved were categorized based on the implicated mechanisms or as those with unexplained mechanisms. Animal experiments relating to MZ twins were found using 'mouse embryo monozygotic twins', 'mouse 8-shaped hatching', 'zebrafish janus mutant', and 'nine-banded armadillo embryo', along with literature collected through day-to-day reading. The search was limited to articles in English, with no restrictions on publication date or species. OUTCOMES For monochorionic MZ twins, ART cases and mouse experiments demonstrate evidence that a looser ICM in blastocysts has an increased chance of ICM separation. Physical forces facilitated by blastocoel formation or 8-shaped hatching are exerted on the ICM, resulting in monochorionic MZ twins. For dichorionic MZ twins, the classic model resembles artificial cloning of mouse embryos in vitro, requiring strictly controlled splitting forces, re-joining prevention, and proper aggregation, which allows the formation of two separate human blastocysts under physiological circumstances. In contrast, ART procedures involving the transfer of a single blastocysts after atypical hatching or vitrified-warmed cycles might lead to blastocyst separation. Differences in morphology, molecular mechanisms, and timing across various animal model systems for MZ twinning can impede this research field. As discussed in future directions, recent developments of innovative in vitro models of human embryos may offer promising avenues for providing fundamental novel insights into the cellular mechanisms of MZ twinning during human embryogenesis. WIDER IMPLICATIONS Twin pregnancies pose high risks to both the fetuses and the mother. While single embryo transfer is commonly employed to prevent dizygotic twin pregnancies in ART, it cannot prevent the occurrence of MZ twins. Drawing from our understanding of the cellular mechanisms underlying monochorionic and dichorionic MZ twinning, along with insights into the genetic mechanisms, could enable improved prediction, prevention, and even intervention strategies during ART procedures. REGISTRAITON NUMBER N/A.
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Affiliation(s)
- Hongbin Jin
- Australian Regenerative Medicine Institute, Monash University, Clayton, VIC, Australia
| | - Yang Han
- Division of Cellular and Developmental Biology, Molecular and Cell Biology Department, University of California, Berkeley, CA, USA
| | - Jennifer Zenker
- Australian Regenerative Medicine Institute, Monash University, Clayton, VIC, Australia
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Yan J, Wu T, Zhang J, Gao Y, Wu JM, Wang S. Revolutionizing the female reproductive system research using microfluidic chip platform. J Nanobiotechnology 2023; 21:490. [PMID: 38111049 PMCID: PMC10729361 DOI: 10.1186/s12951-023-02258-7] [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: 08/19/2023] [Accepted: 12/07/2023] [Indexed: 12/20/2023] Open
Abstract
Comprehensively understanding the female reproductive system is crucial for safeguarding fertility and preventing diseases concerning women's health. With the capacity to simulate the intricate physio- and patho-conditions, and provide diagnostic platforms, microfluidic chips have fundamentally transformed the knowledge and management of female reproductive health, which will ultimately promote the development of more effective assisted reproductive technologies, treatments, and drug screening approaches. This review elucidates diverse microfluidic systems in mimicking the ovary, fallopian tube, uterus, placenta and cervix, and we delve into the culture of follicles and oocytes, gametes' manipulation, cryopreservation, and permeability especially. We investigate the role of microfluidics in endometriosis and hysteromyoma, and explore their applications in ovarian cancer, endometrial cancer and cervical cancer. At last, the current status of assisted reproductive technology and integrated microfluidic devices are introduced briefly. Through delineating the multifarious advantages and challenges of the microfluidic technology, we chart a definitive course for future research in the woman health field. As the microfluidic technology continues to evolve and advance, it holds great promise for revolutionizing the diagnosis and treatment of female reproductive health issues, thus propelling us into a future where we can ultimately optimize the overall wellbeing and health of women everywhere.
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Affiliation(s)
- Jinfeng Yan
- National Clinical Research Center for Obstetrical and Gynecological Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1095, Jiefang Avenue, Wuhan, 430030, China
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
- Engineering Research Center of Ceramic Materials for Additive Manufacturing, Ministry of Education, Wuhan, 430074, China
| | - Tong Wu
- National Clinical Research Center for Obstetrical and Gynecological Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1095, Jiefang Avenue, Wuhan, 430030, China
| | - Jinjin Zhang
- National Clinical Research Center for Obstetrical and Gynecological Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1095, Jiefang Avenue, Wuhan, 430030, China
| | - Yueyue Gao
- National Clinical Research Center for Obstetrical and Gynecological Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1095, Jiefang Avenue, Wuhan, 430030, China
| | - Jia-Min Wu
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.
- Engineering Research Center of Ceramic Materials for Additive Manufacturing, Ministry of Education, Wuhan, 430074, China.
| | - Shixuan Wang
- National Clinical Research Center for Obstetrical and Gynecological Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
- Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1095, Jiefang Avenue, Wuhan, 430030, China.
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3
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Xia T, Umezu K, Scully DM, Wang S, Larina IV. In vivo volumetric depth-resolved imaging of cilia metachronal waves using dynamic optical coherence tomography. OPTICA 2023; 10:1439-1451. [PMID: 38665775 PMCID: PMC11044847 DOI: 10.1364/optica.499927] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 09/21/2023] [Indexed: 04/28/2024]
Abstract
Motile cilia are dynamic hair-like structures covering epithelial surfaces in multiple organs. The periodic coordinated beating of cilia creates waves propagating along the surface, known as the metachronal waves, which transport fluids and mucus along the epithelium. Motile ciliopathies result from disrupted coordinated cilia beating and are associated with serious clinical complications, including reproductive disorders. Despite the recognized clinical significance, research of cilia dynamics is extremely limited. Here, we present quantitative imaging of cilia metachronal waves volumetrically through tissue layers using dynamic optical coherence tomography (OCT). Our method relies on spatiotemporal mapping of the phase of intensity fluctuations in OCT images caused by the ciliary beating. We validated our new method ex vivo and implemented it in vivo to visualize cilia metachronal wave propagation within the mouse fallopian tube. This method can be extended to the assessment of physiological cilia function and ciliary dyskinesias in various organ systems, contributing to better management of pathologies associated with motile ciliopathies.
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Affiliation(s)
- Tian Xia
- Department of Integrative Physiology, Baylor College of Medicine, Houston, Texas 77030, USA
| | - Kohei Umezu
- Department of Integrative Physiology, Baylor College of Medicine, Houston, Texas 77030, USA
| | - Deirdre M. Scully
- Department of Integrative Physiology, Baylor College of Medicine, Houston, Texas 77030, USA
| | - Shang Wang
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030, USA
| | - Irina V. Larina
- Department of Integrative Physiology, Baylor College of Medicine, Houston, Texas 77030, USA
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Hockenberry A, Slack E, Stadtmueller BM. License to Clump: Secretory IgA Structure-Function Relationships Across Scales. Annu Rev Microbiol 2023; 77:645-668. [PMID: 37713459 DOI: 10.1146/annurev-micro-032521-041803] [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: 09/17/2023]
Abstract
Secretory antibodies are the only component of our adaptive immune system capable of attacking mucosal pathogens topologically outside of our bodies. All secretory antibody classes are (a) relatively resistant to harsh proteolytic environments and (b) polymeric. Recent elucidation of the structure of secretory IgA (SIgA) has begun to shed light on SIgA functions at the nanoscale. We can now begin to unravel the structure-function relationships of these molecules, for example, by understanding how the bent conformation of SIgA enables robust cross-linking between adjacent growing bacteria. Many mysteries remain, such as the structural basis of protease resistance and the role of noncanonical bacteria-IgA interactions. In this review, we explore the structure-function relationships of IgA from the nano- to the metascale, with a strong focus on how the seemingly banal "license to clump" can have potent effects on bacterial physiology and colonization.
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Affiliation(s)
- Alyson Hockenberry
- Department of Environmental Microbiology, Swiss Federal Institute of Aquatic Science and Technology (EAWAG), Dübendorf, Switzerland
- Department of Environmental Systems Science (D-USYS), ETH Zürich, Zürich, Switzerland;
| | - Emma Slack
- Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland;
- Botnar Research Centre for Child Health, Basel, Switzerland
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | - Beth M Stadtmueller
- Department of Biochemistry, Center for Biophysics and Quantitative Biology, and Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana, Illinois, USA;
- Department of Biomedical and Translational Sciences, Carle Illinois College of Medicine, University of Illinois, Urbana, Illinois, USA
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5
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Hu Y, Cao X, Zhao Y, Jin Y, Li F, Xu B, Zhao M, Chen Y, Du B, Sun Y, Zhang L. The Function of Spag6 to Repair Brain Edema Damage After Cerebral Ischemic Stroke-reperfusion. Neuroscience 2023; 522:132-149. [PMID: 37169167 DOI: 10.1016/j.neuroscience.2023.04.014] [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: 01/29/2023] [Revised: 04/12/2023] [Accepted: 04/19/2023] [Indexed: 05/13/2023]
Abstract
Sperm associated antigen 6 (Spag6) is the PF16 homolog of Chlamydomonas and participates in the regulation of cilia movement. Studies have shown that Spag6 is expressed in the brain, and its loss will lead to cerebral edema caused by a defect in motor cilium function in ependymal cells. However, it has not been reported whether the limited or extensive cerebral edema resulting from ischemic strokes is related to the expression regulation of Spag6. Therefore, this study aimed to investigate the effect and related mechanism of Spag6 in alleviating Cerebral Ischemic stroke-reperfusion (CIS/R) damage. Our experimental results showed that Spag6 overexpression alleviated CIS/R-mediated motor cilia structural disorder, improved cerebral edema, inhibited nerve injuries in rats with cerebral ischemia, and alleviated synaptic and dendritic spinal injuries by regulating the expressions of synaptic-related proteins such as CaMKII, PSD95, and CREB. Based on significant changes in PI3K/AKT-mTOR signaling pathway activity after CIS/R determination, we determined that Spag6 regulates the abnormal expression of CIS/R-induced inflammatory factors NF-κB, NLRP3, IL-10, and the autophagy-related proteins Beclin-1, LC3, and P62 by activating the PI3K/AKT-mTOR signaling pathway. This inhibits inflammation and autophagy in the brain tissue. In summary, this study revealed that Spag6 alleviates brain edema damage after CIS/R by maintaining the structural function of the motor cilium, regulating the PI3K/AKT-mTOR signaling pathway, and inhibiting inflammation and autophagy reaction.
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Affiliation(s)
- Yiming Hu
- Environmental Toxicology Laboratory, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Public Health, Wuhan University of Science and Technology, Wuhan 430065, China
| | - Xiaolu Cao
- Environmental Toxicology Laboratory, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Medicine, Wuhan University of Science and Technology, Wuhan 430065, China.
| | - Yujie Zhao
- Qiaoxi Center for Disease Control and Prevention, Shijiazhuang, China
| | - Yang Jin
- Department of Biology, College of Arts and Science, New York University, New York, United States
| | - Fengqin Li
- Environmental Toxicology Laboratory, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Medicine, Wuhan University of Science and Technology, Wuhan 430065, China
| | - Bingmei Xu
- Environmental Toxicology Laboratory, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Medicine, Wuhan University of Science and Technology, Wuhan 430065, China
| | - Minghui Zhao
- Environmental Toxicology Laboratory, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Medicine, Wuhan University of Science and Technology, Wuhan 430065, China
| | - Yajun Chen
- Environmental Toxicology Laboratory, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Medicine, Wuhan University of Science and Technology, Wuhan 430065, China
| | - Bingxue Du
- Environmental Toxicology Laboratory, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Public Health, Wuhan University of Science and Technology, Wuhan 430065, China
| | - Yu Sun
- Environmental Toxicology Laboratory, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Public Health, Wuhan University of Science and Technology, Wuhan 430065, China
| | - Ling Zhang
- Environmental Toxicology Laboratory, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Public Health, Wuhan University of Science and Technology, Wuhan 430065, China
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Light-sheet laser speckle imaging for cilia motility assessment. Comput Struct Biotechnol J 2023; 21:1661-1669. [PMID: 36874161 PMCID: PMC9978471 DOI: 10.1016/j.csbj.2023.02.036] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 02/18/2023] [Accepted: 02/18/2023] [Indexed: 02/22/2023] Open
Abstract
Mucociliary clearance is an important innate defense mechanism predominantly mediated by ciliated cells in the upper respiratory tract. Ciliary motility on the respiratory epithelium surface and mucus pathogen trapping assist in maintaining healthy airways. Optical imaging methods have been used to obtain several indicators for assessing ciliary movement. Light-sheet laser speckle imaging (LSH-LSI) is a label-free and non-invasive optical technique for three-dimensional and quantitative mapping of velocities of microscopic scatterers. Here, we propose to use an inverted LSH-LSI platform to study cilia motility. We have experimentally confirmed that LSH-LSI can reliably measure the ciliary beating frequency and has the potential to provide many additional quantitative indicators for characterizing the ciliary beating pattern without labeling. For example, the asymmetry between the power stroke and the recovery stroke is apparent in the local velocity waveform. PIV (particle imaging velocimetry) analysis of laser speckle data could determine the cilia motion directions in different phases.
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7
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Wang M, Zhu T, Liu C, Jin L, Fei P, Zhang B. Oviduct-mimicking microfluidic chips decreased the ROS concentration in the in vitro fertilized embryos of CD-1 mice. Biomed Pharmacother 2022; 154:113567. [PMID: 36007278 DOI: 10.1016/j.biopha.2022.113567] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 08/07/2022] [Accepted: 08/15/2022] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND The process of the assisted reproductive technology (ART) cycle is extremely complicated, and various factors in each step may influence the final clinical outcomes; thus, optimizing culture conditions for embryos is crucial in the ART cycle, particularly when the traditional petri-dish method remains unchanged for decades. In the current study, we intend to culture embryos in a dynamic environment on chips to optimize the embryo culture conditions. METHODS Multilayer soft lithography technology was utilized to establish a microfluidics-based oviduct. Mouse primary oviduct epithelial cells were identified by immunofluorescence staining and then loaded into the chip to coculture with the embryos. The development potential parameters of embryos on chips with cells, on chips without cells, and in drops were compared, as well as reactive oxygen species (ROS) in embryos. RESULTS There were no obvious differences regarding the fertilization rate, 4-Cell embryo rate, cleavage rate, high-quality embryo rate, or blastocyst formation rate. However, the intracellular ROS levels in 4-Cell stage embryos on chips with cells were statistically significantly lower than those in drops (P < 0.001). This organ-on-chip device allowed the probability of mammalian embryo culture in a microfluidic-based manner. CONCLUSIONS Our findings demonstrated that this novel oviduct-on-chip model may optimize embryo culture conditions by reducing intracellular ROS levels, which may be a competent alternative to the existing stable embryo culture system.
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Affiliation(s)
- Meng Wang
- Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tingting Zhu
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China
| | - Chang Liu
- Reproductive Medicine Center, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, China
| | - Lei Jin
- Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Peng Fei
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China
| | - Bo Zhang
- Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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Xu M, Sun T, Tang X, Lu K, Jiang Y, Cao S, Wang Y. Title: CO 2 and HCl-induced seawater acidification impair the ingestion and digestion of blue mussel Mytilus edulis. CHEMOSPHERE 2020; 240:124821. [PMID: 31546185 DOI: 10.1016/j.chemosphere.2019.124821] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 09/05/2019] [Accepted: 09/08/2019] [Indexed: 06/10/2023]
Abstract
Anthropogenic CO2 emissions lead to seawater acidification that reportedly exerts deleterious impacts on marine organisms, especially on calcifying organisms such as mussels. A 21-day experiment focusing on the impacts of seawater acidification on the blue mussel, Mytilus edulis, was performed in this study, within which two acidifying treatments, CO2 enrichment and HCl addition, were applied. Two acidifying pH values (7.7 and 7.1) and the alteration of the key physiological processes of ingestion and digestion were estimated. To thoroughly investigate the impact of acidification on mussels, a histopathological study approach was adopted. The results showed that: (1) Seawater acidification induced either by CO2 enrichment or HCl addition impaired the gill structure. Transmission electron microscope (TEM) results suggested that the most obvious impacts were inflammatory lesions and edema, while more distinct alterations, including endoplasmic reticulum edema, nuclear condensation and chromatin plate-like condensation, were placed in the CO2-treated groups compared to HCl-treated specimens. The ciliary activity of the CO2 group was significantly inhibited simultaneously, leading to an obstacle in food intake. (2) Seawater acidification prominently damaged the structure of digestive glands, and the enzymatic activities of amylase, protease and lipase significantly decreased, which might indicate that the digestion was suppressed. The negative impacts induced by the CO2 group were more severe than that by the HCl group. The present results suggest that acidification interferes with the processes of ingestion and digestion, which potentially inhibits the energy intake of mussels.
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Affiliation(s)
- Mengxue Xu
- Department of Marine Ecology, College of Marine Life Science, Ocean University of China, Qingdao, 266003, China; Pilot Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China.
| | - Tianli Sun
- National Marine Hazard Mitigation Service, Beijing, 100194, China.
| | - Xuexi Tang
- Department of Marine Ecology, College of Marine Life Science, Ocean University of China, Qingdao, 266003, China; Pilot Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China.
| | - Keyu Lu
- Department of Geography, University College London, London, UK.
| | - Yongshun Jiang
- Department of Marine Ecology, College of Marine Life Science, Ocean University of China, Qingdao, 266003, China.
| | - Sai Cao
- Department of Marine Ecology, College of Marine Life Science, Ocean University of China, Qingdao, 266003, China; Pilot Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China.
| | - You Wang
- Department of Marine Ecology, College of Marine Life Science, Ocean University of China, Qingdao, 266003, China; Pilot Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China.
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Xu H, Dauparas J, Das D, Lauga E, Wu Y. Self-organization of swimmers drives long-range fluid transport in bacterial colonies. Nat Commun 2019; 10:1792. [PMID: 30996269 PMCID: PMC6470179 DOI: 10.1038/s41467-019-09818-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 03/28/2019] [Indexed: 01/08/2023] Open
Abstract
Motile subpopulations in microbial communities are believed to be important for dispersal, quest for food, and material transport. Here, we show that motile cells in sessile colonies of peritrichously flagellated bacteria can self-organize into two adjacent, centimeter-scale motile rings surrounding the entire colony. The motile rings arise from spontaneous segregation of a homogeneous swimmer suspension that mimics a phase separation; the process is mediated by intercellular interactions and shear-induced depletion. As a result of this self-organization, cells drive fluid flows that circulate around the colony at a constant peak speed of ~30 µm s−1, providing a stable and high-speed avenue for directed material transport at the macroscopic scale. Our findings present a unique form of bacterial self-organization that influences population structure and material distribution in colonies. Motile and non-motile subpopulations often coexist in bacterial communities. Here, Xu et al. show that motile cells in colonies of common flagellated bacteria can self-organize into two adjacent motile rings, driving stable flows of fluid and materials around the colony.
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Affiliation(s)
- Haoran Xu
- Department of Physics and Shenzhen Research Institute, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People's Republic of China
| | - Justas Dauparas
- Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge, CB3 0WA, UK
| | - Debasish Das
- Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge, CB3 0WA, UK
| | - Eric Lauga
- Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge, CB3 0WA, UK
| | - Yilin Wu
- Department of Physics and Shenzhen Research Institute, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People's Republic of China.
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Hassan A, Parent S, Mathieu H, Zaouter C, Molidperee S, Bagu ET, Barchi S, Villemure I, Patten SA, Moldovan F. Adolescent idiopathic scoliosis associated POC5 mutation impairs cell cycle, cilia length and centrosome protein interactions. PLoS One 2019; 14:e0213269. [PMID: 30845169 PMCID: PMC6405090 DOI: 10.1371/journal.pone.0213269] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Accepted: 02/19/2019] [Indexed: 01/11/2023] Open
Abstract
Adolescent Idiopathic Scoliosis (AIS) is a spinal deformity that affects approximately 3 percent of human adolescents. Although the etiology and molecular basis of AIS is unclear, several genes such as POC5 have been identified as possible causes of the condition. In order to understand the role of POC5 in the pathogenesis of AIS, we investigated the subcellular localization of POC5 in cilia of cells over-expressing either the wild type (wt) or an AIS-related POC5 variant POC5A429V. Mutation of POC5 was found to alter its subcellular localization and to induce ciliary retraction. Furthermore, we observed an impaired cell-cycle progression with the accumulation of cells in the S-phase in cells expressing POC5A429V. Using immunoprecipitation coupled to mass spectrometry, we identified specific protein interaction partners of POC5, most of which were components of cilia and cytoskeleton. Several of these interactions were altered upon mutation of POC5. Altogether, our results demonstrate major cellular alterations, disturbances in centrosome protein interactions and cilia retraction in cells expressing an AIS-related POC5 mutation. Our study suggests that defects in centrosomes and cilia may underlie AIS pathogenesis.
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Affiliation(s)
- Amani Hassan
- Faculty of Dentistry, Université de Montréal, Montréal, Québec, Canada
- CHU Sainte-Justine Research Center, Montréal, Québec, Canada
| | - Stefan Parent
- CHU Sainte-Justine Research Center, Montréal, Québec, Canada
| | - Hélène Mathieu
- CHU Sainte-Justine Research Center, Montréal, Québec, Canada
| | | | | | - Edward T. Bagu
- Department of Basic Biomedical Sciences, Sanford Medical School, University of South Dakota, Vermillion, SD, United States of America
| | - Soraya Barchi
- CHU Sainte-Justine Research Center, Montréal, Québec, Canada
| | | | - Shunmoogum A. Patten
- INRS–Institut Armand-Frappier, Université du Québec, Laval, Montréal, Québec, Canada
| | - Florina Moldovan
- Faculty of Dentistry, Université de Montréal, Montréal, Québec, Canada
- CHU Sainte-Justine Research Center, Montréal, Québec, Canada
- * E-mail:
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Gil DA, Sharick JT, Mancha S, Gamm UA, Choma MA, Skala MC. Redox imaging and optical coherence tomography of the respiratory ciliated epithelium. JOURNAL OF BIOMEDICAL OPTICS 2019; 24:1-4. [PMID: 30701725 PMCID: PMC6985682 DOI: 10.1117/1.jbo.24.1.010501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 01/16/2019] [Indexed: 05/17/2023]
Abstract
Optical coherence tomography (OCT) is an emerging technology for in vivo airway and lung imaging. However, OCT lacks sensitivity to the metabolic changes caused by inflammation, which drives chronic respiratory diseases such as asthma and chronic obstructive pulmonary disorder. Redox imaging (RI) is a label-free technique that uses the autofluorescence of the metabolic coenzymes NAD(P)H and flavin adenine dinucleotide (FAD) to probe cellular metabolism and could provide complimentary information to OCT for airway and lung imaging. We demonstrate OCT and RI of respiratory ciliated epithelial function in ex vivo mouse tracheae. We applied RI to measure cellular metabolism via the redox ratio [intensity of NAD(P)H divided by FAD] and particle tracking velocimetry OCT to quantify cilia-driven fluid flow. To model mitochondrial dysfunction, a key aspect of the inflammatory process, cyanide was used to inhibit oxidative metabolism and reduce ciliary motility. Cyanide exposure over 20 min significantly increased the redox ratio and reversed cilia-driven fluid flow. We propose that RI provides complementary information to OCT to assess inflammation in the airway and lungs.
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Affiliation(s)
- Daniel A. Gil
- University of Wisconsin–Madison, Department of Biomedical Engineering, Madison, Wisconsin, United States
- Morgridge Institute for Research, Madison, Wisconsin, United States
| | - Joe T. Sharick
- Morgridge Institute for Research, Madison, Wisconsin, United States
- Vanderbilt University, Department of Biomedical Engineering, Nashville, Tennessee, United States
| | - Sophie Mancha
- University of Wisconsin–Madison, Department of Biomedical Engineering, Madison, Wisconsin, United States
- Morgridge Institute for Research, Madison, Wisconsin, United States
| | - Ute A. Gamm
- Yale University, Department of Diagnostic Radiology, New Haven, Connecticut, United States
| | - Michael A. Choma
- Yale University, Department of Diagnostic Radiology, New Haven, Connecticut, United States
- Yale University, Department of Biomedical Engineering, New Haven, Connecticut, United States
- Yale University, Department of Pediatrics, New Haven, Connecticut, United States
- Yale University, Department of Applied Physics, New Haven, Connecticut, United States
| | - Melissa C. Skala
- University of Wisconsin–Madison, Department of Biomedical Engineering, Madison, Wisconsin, United States
- Morgridge Institute for Research, Madison, Wisconsin, United States
- Address all correspondence to Melissa C. Skala, E-mail:
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12
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Hanasoge S, Hesketh PJ, Alexeev A. Microfluidic pumping using artificial magnetic cilia. MICROSYSTEMS & NANOENGINEERING 2018; 4:11. [PMID: 31057899 PMCID: PMC6161502 DOI: 10.1038/s41378-018-0010-9] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 01/20/2018] [Accepted: 02/07/2018] [Indexed: 05/24/2023]
Abstract
One of the vital functions of naturally occurring cilia is fluid transport. Biological cilia use spatially asymmetric strokes to generate a net fluid flow that can be utilized for feeding, swimming, and other functions. Biomimetic synthetic cilia with similar asymmetric beating can be useful for fluid manipulations in lab-on-chip devices. In this paper, we demonstrate the microfluidic pumping by magnetically actuated synthetic cilia arranged in multi-row arrays. We use a microchannel loop to visualize flow created by the ciliary array and to examine pumping for a range of cilia and microchannel parameters. We show that magnetic cilia can achieve flow rates of up to 11 μl/min with the pressure drop of ~1 Pa. Such magnetic ciliary array can be useful in microfluidic applications requiring rapid and controlled fluid transport.
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Affiliation(s)
- Srinivas Hanasoge
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332 USA
| | - Peter J. Hesketh
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332 USA
| | - Alexander Alexeev
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332 USA
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13
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Yoshimoto Y, Nishie T, Ito S, Kobayashi Y, Yamamoto Y, Okuda K, Kimura K. Adrenomedullin regulates the speed of oviductal fluid flow in cattle. Mol Reprod Dev 2017. [DOI: 10.1002/mrd.22852] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Yuka Yoshimoto
- Laboratory of Animal Reproductive Physiology, Graduate School of Environmental and Life Science; Okayama University; Okayama Japan
| | - Takumi Nishie
- Laboratory of Animal Reproductive Physiology, Graduate School of Environmental and Life Science; Okayama University; Okayama Japan
| | - Sayaka Ito
- Laboratory of Animal Reproductive Physiology, Graduate School of Environmental and Life Science; Okayama University; Okayama Japan
| | - Yoshihiko Kobayashi
- Laboratory of Animal Reproductive Physiology, Graduate School of Environmental and Life Science; Okayama University; Okayama Japan
| | - Yuki Yamamoto
- Laboratory of Animal Reproductive Physiology, Graduate School of Environmental and Life Science; Okayama University; Okayama Japan
| | - Kiyoshi Okuda
- Laboratory of Animal Reproductive Physiology, Graduate School of Environmental and Life Science; Okayama University; Okayama Japan
- Obihiro University of Agriculture and Veterinary Medicine; Hokkaido Japan
| | - Koji Kimura
- Laboratory of Animal Reproductive Physiology, Graduate School of Environmental and Life Science; Okayama University; Okayama Japan
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14
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Sencan I, Huang BK, Bian Y, Mis E, Khokha MK, Cao H, Choma M. Ultrahigh-speed, phase-sensitive full-field interferometric confocal microscopy for quantitative microscale physiology. BIOMEDICAL OPTICS EXPRESS 2016; 7:4674-4684. [PMID: 27896006 PMCID: PMC5119606 DOI: 10.1364/boe.7.004674] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 10/17/2016] [Accepted: 10/17/2016] [Indexed: 05/05/2023]
Abstract
We developed ultra-high-speed, phase-sensitive, full-field reflection interferometric confocal microscopy (FFICM) for the quantitative characterization of in vivo microscale biological motions and flows. We demonstrated 2D frame rates in excess of 1 kHz and pixel throughput rates up to 125 MHz. These fast FFICM frame rates were enabled by the use of a low spatial coherence, high-power laser source. Specifically, we used a dense vertical cavity surface emitting laser (VCSEL) array that synthesized low spatial coherence light through a large number of narrowband, mutually-incoherent emitters. Off-axis interferometry enabled single-shot acquisition of the complex-valued interferometric signal. We characterized the system performance (~2 μm lateral resolution, ~8 μm axial gating depth) with a well-known target. We also demonstrated the use of this highly parallelized confocal microscopy platform for visualization and quantification of cilia-driven surface flows and cilia beat frequency in an important animal model (Xenopus embryos) with >1 kHz frame rate. Such frame rates are needed to see large changes in local flow velocity over small distance (high shear flow), in this case, local flow around a single ciliated cell. More generally, our results are an important demonstration of low-spatial coherence, high-power lasers in high-performance, quantitative biomedical imaging.
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Affiliation(s)
- Ikbal Sencan
- Department of Radiology and Biomedical Imaging, Yale University, New Haven, CT 06511, USA; Current affiliation: MGH/HST Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA;
| | - Brendan K Huang
- Biomedical Engineering, Yale University, New Haven, CT 06511, USA
| | - Yong Bian
- Department of Radiology and Biomedical Imaging, Yale University, New Haven, CT 06511, USA; Current affiliation: Department of Otology and Laryngology, Harvard Medical School, Massachusetts Eye and Ear Infirmary 243 Charles Street, Boston, MA 02114, USA
| | - Emily Mis
- Pediatrics, Yale University, New Haven, CT 06511, USA
| | | | - Hui Cao
- Applied Physics, Yale University, New Haven, CT 06511, USA
| | - Michael Choma
- Department of Radiology and Biomedical Imaging, Yale University, New Haven, CT 06511, USA; Biomedical Engineering, Yale University, New Haven, CT 06511, USA; Pediatrics, Yale University, New Haven, CT 06511, USA; Applied Physics, Yale University, New Haven, CT 06511, USA;
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15
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Effect of Fluid Viscosity on the Cilia-Generated Flow on a Mouse Tracheal Lumen. Ann Biomed Eng 2016; 45:1048-1057. [DOI: 10.1007/s10439-016-1743-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 09/23/2016] [Indexed: 10/20/2022]
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16
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Zhou KC, Huang BK, Gamm UA, Bhandari V, Khokha MK, Choma MA. Particle streak velocimetry-optical coherence tomography: a novel method for multidimensional imaging of microscale fluid flows. BIOMEDICAL OPTICS EXPRESS 2016; 7:1590-603. [PMID: 27375926 PMCID: PMC4929663 DOI: 10.1364/boe.7.001590] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 03/24/2016] [Accepted: 03/25/2016] [Indexed: 05/21/2023]
Abstract
We present a new OCT method for flow speed quantification and directional velocimetry: particle streak velocimetry-OCT (PSV-OCT). PSV-OCT generates two-dimensional, 2.5-vector component (vx ,|vy |,vz ) maps of microscale flow velocity fields. Knowledge of 2.5-vector components also enables the estimation of total flow speed. The enabling insight behind PSV-OCT is that tracer particles in sparsely-seeded fluid flow trace out streaks in (x,z,t)-space. The streak orientations in x-t and z-t yield vx and vz , respectively. The in-plane (x-z plane) residence time yields the out-of-plane speed |vy |. Vector component values are generated by fitting streaks to a model of image formation that incorporates equations of motion in 3D space. We demonstrate cross-sectional estimation of (vx ,|vy |,vz ) in two important animal models in ciliary biology: Xenopus embryos (tadpoles) and mouse trachea.
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Affiliation(s)
- Kevin C Zhou
- Department of Biomedical Engineering, Yale University, 55 Prospect St., New Haven, Connecticut 06520, USA; Current affiliation: Department of Biomedical Engineering, Duke University, Fitzpatrick CIEMAS, 101 Science Dr., NC 27708, USA;
| | - Brendan K Huang
- Department of Biomedical Engineering, Yale University, 55 Prospect St., New Haven, Connecticut 06520, USA
| | - Ute A Gamm
- Department of Radiology & Biomedical Imaging, Yale University, 333 Cedar St., New Haven, Connecticut 06510, USA
| | - Vineet Bhandari
- Department of Pediatrics, Yale University, 333 Cedar St., New Haven, Connecticut 06510, USA
| | - Mustafa K Khokha
- Department of Pediatrics, Yale University, 333 Cedar St., New Haven, Connecticut 06510, USA; Department of Genetics, Yale University, 333 Cedar St., New Haven, Connecticut 06510, USA
| | - Michael A Choma
- Department of Biomedical Engineering, Yale University, 55 Prospect St., New Haven, Connecticut 06520, USA; Department of Radiology & Biomedical Imaging, Yale University, 333 Cedar St., New Haven, Connecticut 06510, USA; Department of Pediatrics, Yale University, 333 Cedar St., New Haven, Connecticut 06510, USA; Department of Applied Physics, Yale University, P.O. Box 208267, New Haven, Connecticut 06520, USA;
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17
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Huang BK, Gamm UA, Bhandari V, Khokha MK, Choma MA. Three-dimensional, three-vector-component velocimetry of cilia-driven fluid flow using correlation-based approaches in optical coherence tomography. BIOMEDICAL OPTICS EXPRESS 2015; 6:3515-38. [PMID: 26417520 PMCID: PMC4574676 DOI: 10.1364/boe.6.003515] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Revised: 08/02/2015] [Accepted: 08/07/2015] [Indexed: 05/21/2023]
Abstract
Microscale quantification of cilia-driven fluid flow is an emerging area in medical physiology, including pulmonary and central nervous system physiology. Cilia-driven fluid flow is most completely described by a three-dimensional, three-component (3D3C) vector field. Here, we generate 3D3C velocimetry measurements by synthesizing higher dimensional data from lower dimensional measurements obtained using two separate optical coherence tomography (OCT)-based approaches: digital particle image velocimetry (DPIV) and dynamic light scattering (DLS)-OCT. Building on previous work, we first demonstrate directional DLS-OCT for 1D2C velocimetry measurements in the sub-1 mm/s regime (sub-2.5 inch/minute regime) of cilia-driven fluid flow in Xenopus epithelium, an important animal model of the ciliated respiratory tract. We then extend our analysis toward 3D3C measurements in Xenopus using both DLS-OCT and DPIV. We demonstrate the use of DPIV-based approaches towards flow imaging of Xenopus cerebrospinal fluid and mouse trachea, two other important ciliary systems. Both of these flows typically fall in the sub-100 μm/s regime (sub-0.25 inch/minute regime). Lastly, we develop a framework for optimizing the signal-to-noise ratio of 3D3C flow velocity measurements synthesized from 2D2C measures in non-orthogonal planes. In all, 3D3C OCT-based velocimetry has the potential to comprehensively characterize the flow performance of biological ciliated surfaces.
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Affiliation(s)
- Brendan K. Huang
- Department of Biomedical Engineering, Yale University, 55 Prospect St., New Haven, Connecticut 06520,
USA
| | - Ute A. Gamm
- Department of Diagnostic Radiology, Yale University, 333 Cedar St., New Haven, Connecticut 06510,
USA
| | - Vineet Bhandari
- Department of Pediatrics, Yale University, 333 Cedar St., New Haven, Connecticut 06510,
USA
- Current affiliations: Drexel University College of Medicine, Philadelphia, PA, 19129,
USA
- St. Christopher’s Hospital for Children, Philadelphia, PA, 19134,
USA
| | - Mustafa K. Khokha
- Department of Pediatrics, Yale University, 333 Cedar St., New Haven, Connecticut 06510,
USA
- Department of Genetics, Yale University, 333 Cedar St., New Haven, Connecticut 06510,
USA
| | - Michael A. Choma
- Department of Biomedical Engineering, Yale University, 55 Prospect St., New Haven, Connecticut 06520,
USA
- Department of Diagnostic Radiology, Yale University, 333 Cedar St., New Haven, Connecticut 06510,
USA
- Department of Pediatrics, Yale University, 333 Cedar St., New Haven, Connecticut 06510,
USA
- Department of Applied Physics, PO Box 208267, Yale University, New Haven, Connecticut 06520,
USA
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18
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Huang BK, Gamm UA, Jonas S, Khokha MK, Choma MA. Quantitative optical coherence tomography imaging of intermediate flow defect phenotypes in ciliary physiology and pathophysiology. JOURNAL OF BIOMEDICAL OPTICS 2015; 20:030502. [PMID: 25751026 PMCID: PMC4352652 DOI: 10.1117/1.jbo.20.3.030502] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Accepted: 02/19/2015] [Indexed: 05/04/2023]
Abstract
Cilia-driven fluid flow is a critical yet poorly understood aspect of pulmonary physiology. Here, we demonstrate that optical coherence tomography-based particle tracking velocimetry can be used to quantify subtle variability in cilia-driven flow performance in Xenopus, an important animal model of ciliary biology. Changes in flow performance were quantified in the setting of normal development, as well as in response to three types of perturbations: mechanical (increased fluid viscosity), pharmacological (disrupted serotonin signaling), and genetic (diminished ciliary motor protein expression). Of note, we demonstrate decreased flow secondary to gene knockdown of kif3a, a protein involved in ciliogenesis, as well as a dose-response decrease in flow secondary to knockdown of dnah9, an important ciliary motor protein.
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Affiliation(s)
- Brendan K. Huang
- Yale University, Department of Biomedical Engineering, 55 Prospect Street, New Haven, Connecticut 06511, United States
- Address all correspondence to: Brendan K. Huang, E-mail:
| | - Ute A. Gamm
- Yale School of Medicine, Department of Diagnostic Radiology, P.O. Box 208043, New Haven, Connecticut 06520, United States
| | - Stephan Jonas
- Yale School of Medicine, Department of Diagnostic Radiology, P.O. Box 208043, New Haven, Connecticut 06520, United States
| | - Mustafa K. Khokha
- Yale School of Medicine, Department of Pediatrics, P.O. Box 208064, New Haven, Connecticut 06520, United States
- Yale School of Medicine, Department of Genetics, 333 Cedar Street, New Haven, Connecticut 06510, United States
| | - Michael A. Choma
- Yale University, Department of Biomedical Engineering, 55 Prospect Street, New Haven, Connecticut 06511, United States
- Yale School of Medicine, Department of Diagnostic Radiology, P.O. Box 208043, New Haven, Connecticut 06520, United States
- Yale School of Medicine, Department of Pediatrics, P.O. Box 208064, New Haven, Connecticut 06520, United States
- Yale University, Department of Applied Physics, P.O. Box 208267, New Haven, Connecticut 06520, United States
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