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Li F, Xiang R, Liu Y, Hu G, Jiang Q, Jia T. Approaches and challenges in identifying, quantifying, and manipulating dynamic mitochondrial genome variations. Cell Signal 2024; 117:111123. [PMID: 38417637 DOI: 10.1016/j.cellsig.2024.111123] [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: 12/07/2023] [Revised: 02/14/2024] [Accepted: 02/25/2024] [Indexed: 03/01/2024]
Abstract
Mitochondria, the cellular powerhouses, possess their own unique genetic system, including replication, transcription, and translation. Studying these processes is crucial for comprehending mitochondrial disorders, energy production, and their related diseases. Over the past decades, various approaches have been applied in detecting and quantifying mitochondrial genome variations with also the purpose of manipulation of mitochondria or mitochondrial genome for therapeutics. Understanding the scope and limitations of above strategies is not only fundamental to the understanding of basic biology but also critical for exploring disease-related novel target(s), as well to develop innovative therapies. Here, this review provides an overview of different tools and techniques for accurate mitochondrial genome variations identification, quantification, and discuss novel strategies for the manipulation of mitochondria to develop innovative therapeutic interventions, through combining the insights gained from the study of mitochondrial genetics with ongoing single cell omics combined with advanced single molecular tools.
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Affiliation(s)
- Fei Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Run Xiang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China; Department of Thoracic Surgery, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China
| | - Yue Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Guoliang Hu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China; Department of Thoracic Surgery, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China
| | - Quanbo Jiang
- Light, Nanomaterials, Nanotechnologies (L2n) Laboratory, CNRS EMR 7004, University of Technology of Troyes, 12 rue Marie Curie, 10004 Troyes, France
| | - Tao Jia
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China; CNRS-UMR9187, INSERM U1196, PSL-Research University, 91405 Orsay, France; CNRS-UMR9187, INSERM U1196, Université Paris Saclay, 91405 Orsay, France.
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Le Foll N, Pont JC, L’Hostis A, Guilbert T, Bouillaud F, Wolf JP, Ziyyat A. Cyclic FEE Peptide Improves Human Sperm Movement Parameters without Modification of Their Energy Metabolism. Int J Mol Sci 2021; 22:ijms222011263. [PMID: 34681924 PMCID: PMC8539654 DOI: 10.3390/ijms222011263] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/14/2021] [Accepted: 10/15/2021] [Indexed: 02/06/2023] Open
Abstract
Cyclic fertilin peptide (cFEE: phenylalanine, glutamic acid; glutamic acid) improves gamete interaction in humans. We investigate whether it could be via improvement of sperm movement parameters and their mitochondrial ATP production. Sperm movement parameters were studied using computer-assisted sperm analysis (CASA) in sperm samples from 38 patients with normal sperm in medium supplemented with cyclic fertilin against a control group. Sperm mitochondrial functions were studied using donor’s sperm, incubated or not with cFEE. It was evaluated by the measurement of their ATP production using bioluminescence, their respiration by high resolution oxygraphy, and of mitochondrial membrane potential (MMP) using potentiometric dyes and flow cytometry. cFEE significantly improved sperm movement parameters and percentage of hyperactivated sperm. Impact of inhibitors showed OXPHOS as the predominant energy source for sperm movement. However, cFEE had no significant impact on any of the analyzed mitochondrial bioenergetic parameters, suggesting that it could act via a more efficient use of its energy resources.
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Affiliation(s)
- Nathalie Le Foll
- Institut Cochin, Université de Paris, INSERM, CNRS, 75014 Paris, France; (N.L.F.); (J.-C.P.); (A.L.); (T.G.); (F.B.); (A.Z.)
- Service D’histologie, D’embryologie, Biologie de la Reproduction, AP-HP, Hôpital Cochin, 75014 Paris, France
| | - Jean-Christophe Pont
- Institut Cochin, Université de Paris, INSERM, CNRS, 75014 Paris, France; (N.L.F.); (J.-C.P.); (A.L.); (T.G.); (F.B.); (A.Z.)
| | - Audrey L’Hostis
- Institut Cochin, Université de Paris, INSERM, CNRS, 75014 Paris, France; (N.L.F.); (J.-C.P.); (A.L.); (T.G.); (F.B.); (A.Z.)
- Service D’histologie, D’embryologie, Biologie de la Reproduction, AP-HP, Hôpital Cochin, 75014 Paris, France
| | - Thomas Guilbert
- Institut Cochin, Université de Paris, INSERM, CNRS, 75014 Paris, France; (N.L.F.); (J.-C.P.); (A.L.); (T.G.); (F.B.); (A.Z.)
| | - Frédéric Bouillaud
- Institut Cochin, Université de Paris, INSERM, CNRS, 75014 Paris, France; (N.L.F.); (J.-C.P.); (A.L.); (T.G.); (F.B.); (A.Z.)
| | - Jean-Philippe Wolf
- Institut Cochin, Université de Paris, INSERM, CNRS, 75014 Paris, France; (N.L.F.); (J.-C.P.); (A.L.); (T.G.); (F.B.); (A.Z.)
- Service D’histologie, D’embryologie, Biologie de la Reproduction, AP-HP, Hôpital Cochin, 75014 Paris, France
- Correspondence: ; Tel.: +33-(1)-58-41-37-31
| | - Ahmed Ziyyat
- Institut Cochin, Université de Paris, INSERM, CNRS, 75014 Paris, France; (N.L.F.); (J.-C.P.); (A.L.); (T.G.); (F.B.); (A.Z.)
- Service D’histologie, D’embryologie, Biologie de la Reproduction, AP-HP, Hôpital Cochin, 75014 Paris, France
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Brito MM, Angrimani DDSR, Rui BR, Kawai GKV, Losano JDA, Vannucchi CI. Effect of senescence on morphological, functional and oxidative features of fresh and cryopreserved canine sperm. Aging Male 2020; 23:279-286. [PMID: 29993302 DOI: 10.1080/13685538.2018.1487931] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The present research aimed to compare the hormonal profile, sperm quality and freezability of young and senile dogs. Dogs were assigned into Young Group (n = 11) and Senile Group (n = 11), additionally divided into Fresh Semen Group and Cryopreserved Semen Group. Males were evaluated for libido score and blood estrogen and testosterone assay. Sperm morphofunctional evaluations were performed based on Computer Assisted Sperm Analysis, morphology, mitochondrial activity, mitochondrial membrane potential, plasma and acrosomal membrane integrity, and DNA fragmentation. Sperm oxidative features were: protein oxidation, lipid peroxidation and production of advanced glycation end-products. Young dogs had higher libido score, sperm velocity average pathway, linearity of motility and mitochondrial activity index and lower percentage of major defects, total defects and proximal cytoplasmic droplet, despite the lack of difference between hormone profile of aged dogs. Fresh semen of senile dogs had increased percentage of spermatozoa with high mitochondrial membrane potential compared to young dogs and to cryopreserved sperm. Cryopreserved semen of young dogs had higher acrosomal membrane integrity compared to the Senile Group. In conclusion, sperm of aged dogs have reduced quality, signaled by higher morphological defects, ultimately altering sperm mitochondrial function and sperm kinetics. Furthermore, spermatozoa from senile dogs are more sensible to cryoinjury.
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Affiliation(s)
- Maíra Morales Brito
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | - Daniel de Souza Ramos Angrimani
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | - Bruno Rogério Rui
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | | | - João Diego Agostini Losano
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | - Camila Infantosi Vannucchi
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
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Nguyen VV, Ponchunchoovong S, Kupittayanant S, Kupittayanant P. Effects of egg yolk and soybean lecithin on sperm quality determined by computer-assisted sperm analysis and confocal laser scanning microscope in chilled canine sperm. Vet Med Sci 2019; 5:345-360. [PMID: 30848107 PMCID: PMC6682803 DOI: 10.1002/vms3.158] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
The reduction of spermatozoa survival time is a major problem of canine chilled sperm for artificial insemination. The aim of the study was to improve the quality of canine chilled sperm during storage time. We therefore, evaluated the effects of eight treatments with different levels of soybean lecithin concentration (1, 3 and 5%) and egg yolk (20%) in Tris-citric-fructose or Tris-citric-fructose-mineral salts extender on chilled canine sperm quality during 10 days of storage. The sperm motility was analysed by computer-assisted sperm analysis (CASA), whereas plasma membrane integrity, acrosome membrane integrity and mitochondrial membrane potential parameters were determined using a fluorescent staining combination of propidium iodide (PI), Hoechst 33342 (H342), fluorescein isothiocyanate-conjugated Pisum sativum agglutinin (FITC-PSA) and 5,5',6,6'-tetrachloro-1,1',3,3'-tetraethylbenzimidazolyl-carbocyanine iodide (JC-1) by confocal laser scanning microscope. The results showed that egg yolk was found to be better than soybean lecithin in Tris-citric-fructose or Tris-citric-fructose-mineral salts extender for maintaining the quality of chilled canine sperm within 10 days of storage (P < 0.05). Although egg yolk in Tris-citric-fructose extender could maintain the motility better than other extenders, egg yolk in Tris-citric-fructose-mineral salts extender was the highest in intact plasma membrane, intact acrosome membrane and high mitochondrial membrane potential (P < 0.05). In contrast, the sperm quality of soybean lecithin in Tris-citric-fructose-mineral salts extender was lower than that of soybean lecithin in Tris-citric-fructose extender, and soybean lecithin 1% was greater than soybean lecithin 3% and 5% in plasma membrane integrity, acrosome membrane integrity and mitochondrial membrane potential (P < 0.05). In conclusion, soybean lecithin cannot replace egg yolk in Tris-citric-fructose or Tris-citric-fructose-mineral salts extenders, and egg yolk in Tris-citric-fructose-mineral salts extender is superior to other extenders in chilling canine sperm.
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Affiliation(s)
- Vui V. Nguyen
- School of Animal Technology and InnovationInstitute of Agricultural TechnologySuranaree University of TechnologyNakhon RatchasimaThailand
| | - Samorn Ponchunchoovong
- School of Animal Technology and InnovationInstitute of Agricultural TechnologySuranaree University of TechnologyNakhon RatchasimaThailand
| | - Sajeera Kupittayanant
- School of PreclinicInstitute of ScienceSuranaree University of TechnologyNakhon RatchasimaThailand
| | - Pakanit Kupittayanant
- School of Animal Technology and InnovationInstitute of Agricultural TechnologySuranaree University of TechnologyNakhon RatchasimaThailand
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Fu J, Yang Q, Li Y, Li P, Wang L, Li X. A mechanism by which Astragalus polysaccharide protects against ROS toxicity through inhibiting the protein dephosphorylation of boar sperm preserved at 4 °C. J Cell Physiol 2018; 233:5267-5280. [PMID: 29231961 DOI: 10.1002/jcp.26321] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 12/01/2017] [Indexed: 01/08/2023]
Abstract
Numerous studies have shown that Astragalus polysaccharide (APS) has strong antioxidant effects and high practical value for preserving semen at low temperatures in vitro. However, to date, little attention has been paid to the precise mechanism of APS in sperm preservation at 4 °C. Thus, to gain further insight into the protective effects of APS, the present study was performed to assess the changes in sperm quality parameters, antioxidant capacity, ATP content, and protein phosphorylation levels. Here, we demonstrated that supplementation with APS could effectively preserve boar sperm quality parameters such as sperm motility, acrosome integrity, and mitochondrial membrane potential. Moreover, we found that the positive effects of APS on boar sperm quality were mainly due to the elimination of excessive mitochondrial ROS, the improvement of antioxidant capacities and the enhancement of ATP levels. Interestingly, by conducting a series of studies on protein phosphorylation, we also discovered that APS could protect boar sperm from oxidative stress and energy deficiency through inhibiting the protein dephosphorylation caused by ROS via the cAMP-PKA signaling pathway. To our knowledge, this is the first exploration of the molecular mechanism underlying the protective roles of APS toward ROS toxicity from the perspective of energy metabolism and protein modification. This study comprehensively provides novel insights into the action mechanism of the protective effects of antioxidants on sperm stored at 4 °C and reveals the practical feasibility of using APS as a boar semen extender supplement for assisted reproductive technology.
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Affiliation(s)
- Jieli Fu
- Shanghai Key Lab of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai, 200240, China
| | - Qiangzhen Yang
- Shanghai Key Lab of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai, 200240, China
| | - Yuhua Li
- Shanghai Key Lab of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai, 200240, China
| | - Peifei Li
- Shanghai Key Lab of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai, 200240, China
| | - Lirui Wang
- Shanghai Key Lab of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai, 200240, China
| | - Xinhong Li
- Shanghai Key Lab of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai, 200240, China
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Feugang JM, Liao SF, Willard ST, Ryan PL. In-depth proteomic analysis of boar spermatozoa through shotgun and gel-based methods. BMC Genomics 2018; 19:62. [PMID: 29347914 PMCID: PMC5774113 DOI: 10.1186/s12864-018-4442-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 01/10/2018] [Indexed: 01/14/2023] Open
Abstract
Background Mature spermatozoa contain numerous epididymal and seminal plasma proteins, which full identification through high-throughput technologies may allow for a better understanding of the sperm biology. Therefore, we conducted a global proteomic analysis of boar spermatozoa through shotgun and gel-based methodologies. Results The total proteins were extracted from mature spermatozoa and subjecsted to proteome analyses. Functional analyses of gene ontology representations and pathway enrichments were conducted on the shotgun dataset, followed by immunology and gene expression validations. Shotgun and gel-based approaches allowed the detection of 2728 proteins and 2123 spots, respectively. Approximately 38% and 59% of total proteins were respectively fully and partially annotated, and 3% were unknown. Gene ontology analysis indicated high proportions of proteins associated with intracellular and cytoplasm localizations, protein and nucleic acid binding, hydrolase and transferase activities, and cellular, metabolic, and regulation of biological processes. Proteins associated with phosphorylation processes and mitochondrial membranes, nucleic acid binding, and phosphate and phosphorous metabolics represented 77% of the dataset. Pathways associated with oxidative phosphorylation, citrate cycle, and extra-cellular matrix-receptor interaction were significantly enriched. Protein complex, intracellular organelle, cytoskeletal parts, fertilization and reproduction, and gap junction pathway were significantly enriched within the top 116 highly abundant proteins. Nine randomly selected protein candidates were confirmed with gel-based identification, immunofluorescence detection, and mRNA expression. Conclusions This study offers an in-depth proteomic mapping of mature boar spermatozoa that will enable comparative and discovery research for the improvement of male fertility. Electronic supplementary material The online version of this article (10.1186/s12864-018-4442-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jean M Feugang
- Department of Animal and Dairy Sciences, Mississippi State University, Mississippi State, MS, 39762, USA.
| | - Shengfa F Liao
- Department of Animal and Dairy Sciences, Mississippi State University, Mississippi State, MS, 39762, USA
| | - Scott T Willard
- Department of Animal and Dairy Sciences, Mississippi State University, Mississippi State, MS, 39762, USA.,Department of Biochemistry, Molecular Biology, Entomology and Plant Pathology, Mississippi State University, Mississippi State, MS, 39762, USA
| | - Peter L Ryan
- Department of Animal and Dairy Sciences, Mississippi State University, Mississippi State, MS, 39762, USA.,Department of Pathobiology and Population Medicine, Mississippi State University, Mississippi State, MS, 39762, USA
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Fu J, Li Y, Wang L, Zhen L, Yang Q, Li P, Li X. Bovine serum albumin and skim-milk improve boar sperm motility by enhancing energy metabolism and protein modifications during liquid storage at 17 °C. Theriogenology 2017; 102:87-97. [PMID: 28756326 DOI: 10.1016/j.theriogenology.2017.07.020] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 07/18/2017] [Accepted: 07/19/2017] [Indexed: 12/26/2022]
Abstract
Both bovine serum albumin (BSA) and skim-milk have been reported to improve sperm quality, primarily by enhancing sperm motility, but the underlying molecular mechanism remains unknown. In this study, boar semen samples were collected and diluted with Androstar® Plus extender containing different concentrations (0, 2, 4 g/l) of BSA and skim-milk. On days 0, 3, 5 and 7, the sperm motility parameters were determined using computer-assisted sperm analysis (CASA), and the ATP concentrations, glyceraldehyde-3-phosphate dehydrogenase (GAPDH) activity and mitochondrial membrane potential were evaluated using commercial kits. The levels of protein phosphorylation, acylation and ubiquitination were analyzed by western blot. The results showed that supplementation with BSA and skim-milk provided higher sperm motility parameters, ATP levels, GAPDH activity and mitochondrial membrane potential than the control group (P < 0.05). Interestingly, we found that the levels of protein phosphorylation, acetylation and succinylation of the spermatozoa in the treated groups were dramatically higher than those in the control group (P < 0.05). Though the protein ubiquitination level had a decreasing trend, the change in ubiquitination modification was not significantly different between the control group and treated groups. Moreover, the changes in protein modifications between the BSA treated group and skim-milk treated group were not distinctly dissimilar. Taken together, these results suggest that BSA and skim-milk had a positive role in the regulation of boar sperm motility by influencing sperm protein modifications changes as well as increasing the GAPDH activity, mitochondrial membrane potential, and intracellular ATP content. This research provides novel insights into the molecular mechanisms underlying BSA and skim-milk protective effects on boar sperm in the male reproductive system and suggests the feasibility of using skim-milk instead of BSA as a boar semen extender supplement.
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Affiliation(s)
- Jieli Fu
- Shanghai Key Lab of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai 200240, China
| | - Yuhua Li
- Shanghai Key Lab of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai 200240, China
| | - Lirui Wang
- Shanghai Key Lab of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai 200240, China
| | - Linqing Zhen
- Shanghai Key Lab of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai 200240, China
| | - Qiangzhen Yang
- Shanghai Key Lab of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai 200240, China
| | - Peifei Li
- Shanghai Key Lab of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai 200240, China
| | - Xinhong Li
- Shanghai Key Lab of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai 200240, China.
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Greulich KO. Manipulation of cells with laser microbeam scissors and optical tweezers: a review. REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2017; 80:026601. [PMID: 28008877 DOI: 10.1088/1361-6633/80/2/026601] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The use of laser microbeams and optical tweezers in a wide field of biological applications from genomic to immunology is discussed. Microperforation is used to introduce a well-defined amount of molecules into cells for genetic engineering and optical imaging. The microwelding of two cells induced by a laser microbeam combines their genetic outfit. Microdissection allows specific regions of genomes to be isolated from a whole set of chromosomes. Handling the cells with optical tweezers supports investigation on the attack of immune systems against diseased or cancerous cells. With the help of laser microbeams, heart infarction can be simulated, and optical tweezers support studies on the heartbeat. Finally, laser microbeams are used to induce DNA damage in living cells for studies on cancer and ageing.
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Chandsawangbhuwana C, Shi LZ, Zhu Q, Berns MW. Real-time calcium measurements of live optically trapped microorganisms. JOURNAL OF BIOPHOTONICS 2014; 7:571-579. [PMID: 23576396 DOI: 10.1002/jbio.201200209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Revised: 02/06/2013] [Accepted: 03/18/2013] [Indexed: 06/02/2023]
Abstract
A system has been developed that allows for the real-time measurement of calcium dynamics in swimming sperm. Specifically, the ratiometric dye Indo-I is used as a fluorescent indicator of intracellular calcium dynamics. The dual emissions are collected by a high-sensitivity back-illuminated CCD camera coupled to a Dual-View imaging system. From the CCD, the images are sent to a custom developed algorithm which processes the images and outputs the calcium measurements in real-time. Additionally, sperm velocity and position data are processed and outputted in real-time. The velocity and position data are obtained using a separate coupled red light (>670 nm) phase contrast imaging setup that does not optically interfere with the fluorescent imaging. Using this system the effects of optical trapping on calcium dynamics was determined. Optical trapping of sperm with a decaying focused laser power of 510 mW to 3 mW over 8 seconds causes a statistically insignificant change in calcium dynamics between in-trap and out-of-trap conditions. Progesterone, a calcium activator, was added and sperm were trapped under the 8 second power decay conditions. Progesterone treated sperm has a statistically higher average calcium level than untreated sperm, but shows no statistical difference between progesterone treated in-trap and out-of-trap conditions. Trapping at 16 seconds at 510 mW without decay, which have been shown to decrease sperm motility, shows a statistical difference between baseline pre-trap and in-trap intracellular calcium levels.
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Affiliation(s)
- Charlie Chandsawangbhuwana
- Department of Bioengineering, University of California, San Diego, 9500 Gilman Dr., La Jolla, CA 92093, USA
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Rotational dynamics of optically trapped human spermatozoa. ScientificWorldJournal 2014; 2014:154367. [PMID: 24600321 PMCID: PMC3926395 DOI: 10.1155/2014/154367] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Accepted: 11/21/2013] [Indexed: 11/27/2022] Open
Abstract
Introduction. Optical trapping is a laser-based method for probing the physiological and mechanical properties of cells in a noninvasive manner. As sperm motility is an important criterion for assessing the male fertility potential, this technique is used to study sperm cell motility behavior and rotational dynamics. Methods and Patients. An integrated optical system with near-infrared laser beam has been used to analyze rotational dynamics of live sperm cells from oligozoospermic and asthenozoospermic cases and compared with controls. Results. The linear, translational motion of the sperm is converted into rotational motion on being optically trapped, without causing any adverse effect on spermatozoa. The rotational speed of sperm cells from infertile men is observed to be significantly less as compared to controls. Conclusions. Distinguishing normal and abnormal sperm cells on the basis of beat frequency above 5.6 Hz may be an important step in modern reproductive biology to sort and select good quality spermatozoa. The application of laser-assisted technique in biology has the potential to be a valuable tool for assessment of sperm fertilization capacity for improving assisted reproductive technology.
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Treulen F, Sánchez R, Risopatrón J. Effects of Seminal Fluid Fractions on Plasma and Acrosome Membrane Integrity and Mitochondrial Membrane Potential Determined by Flow Cytometry in Chilled Canine Spermatozoa. Reprod Domest Anim 2012; 47:1043-8. [DOI: 10.1111/j.1439-0531.2012.02011.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Three powerful research tools from single cells into single molecules: AFM, laser tweezers, and Raman spectroscopy. Appl Biochem Biotechnol 2011; 165:485-96. [PMID: 21556902 DOI: 10.1007/s12010-011-9267-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2010] [Accepted: 04/18/2011] [Indexed: 01/11/2023]
Abstract
By using three physical techniques (atomic force microscopy (AFM), laser tweezers, and Raman spectroscopy), many excellent works in single-cell/molecule research have been accomplished. In this review, we present a brief introduction to the principles of these three techniques, and their capabilities toward single-cell/molecule research are highlighted. Afterward, the advances in single-cell/molecule research that have been facilitated by these three techniques are described. Following this, their complementary assets for single-cell/molecule research are analyzed, and the necessity of integrating the functions of these three techniques into one instrument is proposed.
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Cheuquemán C, Bravo P, Treulén F, Giojalas L, Villegas J, Sánchez R, Risopatrón J. Sperm membrane functionality in the dog assessed by flow cytometry. Reprod Domest Anim 2011; 47:39-43. [PMID: 21535242 DOI: 10.1111/j.1439-0531.2011.01798.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The objective assessment of sperm function increases the chances of predicting the fertilizing capacity of a fresh semen sample or diagnosing infertility problems. In this study, the available flow cytometry technique was used to determine the membrane functional capacity of canine spermatozoa. The second fractions of ejaculates from six dogs were pooled, and samples (n = 26) processed to determine the variables: sperm viability and plasma membrane integrity by Sybr-14/Pi staining; phosphatidylserine (PS) translocation by Annexin-V-FITC/PI labelling; acrosome membrane integrity by FITC-conjugated Pisum sativum agglutinin/PI labelling; and mitochondrial membrane potential (ΔΨm) by staining with JC-1. Means for the 26 examined samples indicated that 82.66 ± 2.8% of the viable spermatozoa showed an intact plasma membrane, 8.4 ± 2.6% were moribund, 72.7 ± 16% had an intact acrosome, 80.9 ± 17% had high ΔΨm and 8.1 ± 11% had PS translocation with a PS translocation index of 2.1 ± 3%. Motility was only correlated with PS translocation (R = 0.3901; p = 0.0488), and acrosome membrane integrity was correlated with PS translocation (R = -0.5816; p = 0.0018). This study provides objective physiological data on the functional capacity of canine spermatozoa.
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Affiliation(s)
- C Cheuquemán
- Faculty of Medicine, University of La Frontera, Temuco, Chile
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Shi LZ, Nascimento J, Botvinick E, Durrant B, Berns MW. An interdisciplinary systems approach to study sperm physiology and evolution. WILEY INTERDISCIPLINARY REVIEWS-SYSTEMS BIOLOGY AND MEDICINE 2011; 3:36-47. [PMID: 21064038 DOI: 10.1002/wsbm.106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Optical trapping is a noninvasive biophotonic tool that has been developed to study the physiological and biomechanical properties of cells. The custom-designed optical system is built to direct near-infrared laser light into an inverted microscope to create a single-point three-dimensional gradient laser trap at the microscope focal point. A real-time automated tracking and trapping system (RATTS) is described that provides a remote user-friendly robotic interface. The combination of laser tweezers, fluorescent imaging, and RATTS can measure sperm swimming speed and swimming force simultaneously with mitochondrial membrane potential (MMP). The roles of two sources of adenosine triphosphate in sperm motility/energetics are studied: oxidative phosphorylation, which occurs in the mitochondria located in the sperm midpiece, and glycolysis, which occurs along the length of the sperm tail (flagellum). The effects of glucose, oxidative phosphorylation inhibitors, and glycolytic inhibitors on human sperm motility are studied. This combination of photonic physical and engineering tools has been used to examine the evolutionary effect of sperm competition in primates. The results demonstrate a correlation between mating type and sperm motility: sperm from polygamous (multi-partner) primate species swim faster and with greater force than sperm from polygynous (single partner) primate species. In summary, engineering and biological systems are combined to provide a powerful interdisciplinary approach to study the complex biological systems that drive the sperm toward the egg.
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Affiliation(s)
- Linda Z Shi
- The Institute of Engineering in Medicine, University of California, San Diego, CA, USA
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15
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Volpe S, Leoci R, Aiudi G, Lacalandra GM. Relationship between motility and mitochondrial functional status in canine spermatozoa. Reprod Domest Anim 2010; 44 Suppl 2:275-8. [PMID: 19754585 DOI: 10.1111/j.1439-0531.2009.01457.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Inner mitochondrial membrane potential (IMM) is considered a sensitive indicator for the energetic status and motility of spermatozoa. The relationship between sperm motility parameters evaluated by Computer Assisted Sperm motility Analyzer and plasma membrane integrity and IMM assessed by triple staining (PI/SYBR-14 and JC-1) was evaluated in 10 dogs of unknown fertility. Sperm motility showed large variations ranging from 10% to 98%. Proportion of viable sperm cells and of spermatozoa with high IMM ranged from 74% to 99% and from 53% to 87%, respectively. The presence of a high IMM assessed by JC-1 was more strongly correlated to sperm viability (r = 1) than to sperm motility (r = 0.778). Our results indicate that JC-1 is suitable for detection of IMM changes in canine spermatozoa, but it should always be associated with an objective motility analysis to avoid incorrect evaluation of potential sperm fertility. Ejaculates with a low motility rate showed an unexpectedly high proportion of sperm with high IMM, suggesting that mitochondrial respiration could not be sufficient to support sperm motility, although it may be important for sperm survival in the female genital tract.
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Affiliation(s)
- S Volpe
- Department of Animal Production, Faculty of Veterinary Medicine, University of Bari, Bari, Italy.
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16
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Nascimento JM, Shi LZ, Tam J, Chandsawangbhuwana C, Durrant B, Botvinick EL, Berns MW. Comparison of glycolysis and oxidative phosphorylation as energy sources for mammalian sperm motility, using the combination of fluorescence imaging, laser tweezers, and real-time automated tracking and trapping. J Cell Physiol 2008; 217:745-51. [PMID: 18683212 DOI: 10.1002/jcp.21549] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The combination of laser tweezers, fluorescent imaging, and real-time automated tracking and trapping (RATTS) can measure sperm swimming speed and swimming force simultaneously with mitochondrial membrane potential (MMP). This approach is used to study the roles of two sources of ATP in sperm motility: oxidative phosphorylation, which occurs in the mitochondria located in the sperm midpiece and glycolysis, which occurs along the length of the sperm tail (flagellum). The relationships between (a) swimming speed and MMP and (b) swimming force and MMP are studied in dog and human sperm. The effects of glucose, oxidative phosphorylation inhibitors and glycolytic inhibitors on human sperm motility are examined. The results indicate that oxidative phosphorylation does contribute some ATP for human sperm motility, but not enough to sustain high motility. The glycolytic pathway is shown to be a primary source of energy for human sperm motility.
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Affiliation(s)
- Jaclyn M Nascimento
- Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, California 92039, USA.
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