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Olver DJ, Heres P, Paredes E, Benson JD. Rational synthesis of total damage during cryoprotectant equilibration: modelling and experimental validation of osmomechanical, temperature, and cytotoxic damage in sea urchin ( Paracentrotus lividus) oocytes. PeerJ 2023; 11:e15539. [PMID: 37671360 PMCID: PMC10476611 DOI: 10.7717/peerj.15539] [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: 01/24/2023] [Accepted: 05/21/2023] [Indexed: 09/07/2023] Open
Abstract
Sea urchins (e.g., Paracentrotus lividus) are important for both aquaculture and as model species. Despite their importance, biobanking of urchin oocytes by cryopreservation is currently not possible. Optimized cryoprotectant loading may enable novel vitrification methods and thus successful cryopreservation of oocytes. One method for determining an optimized loading protocol uses membrane characteristics and models of damage, namely osmomechanical damage, temperature damage (e.g., chill injury) and cytotoxicity. Here we present and experimentally evaluate existing and novel models of these damage modalities as a function of time and temperature. In osmomechanical damage experiments, oocytes were exposed for 2 to 30 minutes in hypertonic NaCl or sucrose supplemented seawater or in hypotonic diluted seawater. In temperature damage experiments, oocytes were exposed to 1.7 °C, 10 °C, or 20 °C for 2 to 90 minutes. Cytotoxicity was investigated by exposing oocytes to solutions of Me2SO for 2 to 30 minutes. We identified a time-dependent osmotic damage model, a temperature-dependent damage model, and a temperature and time-dependent cytotoxicity model. We combined these models to estimate total damage during a cryoprotectant loading protocol and determined the optimal loading protocol for any given goal intracellular cryoprotectant concentration. Given our fitted models, we find sea urchin oocytes can only be loaded to 13% Me2SO v/v with about 50% survival. This synthesis of multiple damage modalities is the first of its kind and enables a novel approach to modelling cryoprotectant equilibration survival for cells in general.
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Affiliation(s)
- Dominic J. Olver
- Department of Biology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Pablo Heres
- Departamento de Ecología y Biología Animal, ECOCOST Lab, Centro de Investigación Mariña, Universidade de Vigo, Vigo, Spain
| | - Estefania Paredes
- Departamento de Ecología y Biología Animal, ECOCOST Lab, Centro de Investigación Mariña, Universidade de Vigo, Vigo, Spain
| | - James D. Benson
- Department of Biology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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Toh EC, Liu KL, Tsai S, Lin C. Cryopreservation and Cryobanking of Cells from 100 Coral Species. Cells 2022; 11:cells11172668. [PMID: 36078076 PMCID: PMC9454506 DOI: 10.3390/cells11172668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/17/2022] [Accepted: 08/24/2022] [Indexed: 11/16/2022] Open
Abstract
When coral species become extinct, their genetic resources cannot be recovered. Coral cryobanks can be employed to preserve coral samples and thereby maintain the availability of the samples and increase their potential to be restocked. In this study, we developed a procedure to determine coral species-specific requirements for cryobank freezing through determining suitable cryoprotective agents (CPAs), CPA concentrations, equilibration times, holding durations, viability rates, and cell amounts for banked coral cells, and we established the first ever coral cell cryobank. Coral cells, including supporting and gland cells, epidermal nematocysts, Symbiodiniaceae and symbiotic endoderm cells (SEC) were found from the extracted protocol. Approximately half of the corals from the experimental corals consisted of spindle and cluster cells. Gastrodermal nematocysts were the least common. The overall concentration of Symbiodiniaceae in the coral cells was 8.6%. Freezing using DMSO as a CPA was suitable for approximately half of the corals, and for the other half of species, successful cell cryopreservation was achieved using MeOH and EG. EG and DMSO had similar suitabilities for Acanthastrea, Euphyllia, Favites, Lobophyllia, Pavona, Seriatopora, and Turbinaria, as did EG and MeOH for Acropora, Echinopyllia, and Sinularia and MeOH and DMSO for Platygyra after freezing. At least 14 straws from each species of coral were cryobanked in this study, totaling more than 1884 straws (0.5 mL) with an average concentration of 6.4 × 106 per mL. The results of this study may serve as a framework for cryobanks worldwide and contribute to the long-term conservation of coral reefs.
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Affiliation(s)
- En-Chun Toh
- Institute of Marine Biology, National Dong Hwa University, Pingtung 944401, Taiwan
| | - Kuan-Lin Liu
- Institute of Marine Biology, National Dong Hwa University, Pingtung 944401, Taiwan
| | - Sujune Tsai
- Department of Post Modern Agriculture, Mingdao University, Peetow, Changhua 52345, Taiwan
- Correspondence: (S.T.); (C.L.); Tel.: +886-925750025 (S.T.); +886-08-88825036 (C.L.)
| | - Chiahsin Lin
- Institute of Marine Biology, National Dong Hwa University, Pingtung 944401, Taiwan
- National Museum of Marine Biology & Aquarium, Checheng, Pingtung 944, Taiwan
- Correspondence: (S.T.); (C.L.); Tel.: +886-925750025 (S.T.); +886-08-88825036 (C.L.)
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3
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Cirino L, Tsai S, Wen ZH, Wang LH, Chen HK, Cheng JO, Lin C. Lipid profiling in chilled coral larvae. Cryobiology 2021; 102:56-67. [PMID: 34329639 DOI: 10.1016/j.cryobiol.2021.07.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 07/22/2021] [Accepted: 07/23/2021] [Indexed: 01/08/2023]
Abstract
Coral reefs are disappearing worldwide as a result of several harmful human activities. The establishment of cryobanks can secure a future for these ecosystems. To design effective cryopreservation protocols, basic proprieties such as chilling tolerance and lipid content must be assessed. In the present study, we investigated chilling sensitivity and the effect of chilling exposure on the lipid content and composition of larvae belonging to 2 common Indo-Pacific corals: Seriatopora caliendrum and Pocillopora verrucosa. The viability of coral larvae incubated with 0.5, 1, and 2 M ethylene glycol (EG), propylene glycol (PG), dimethyl sulfoxide (Me2SO), methanol, or glycerol and kept at 5 °C for different time periods was documented. In addition, we investigated the content of cholesterol, triacylglycerol (TAG), wax ester (WE), sterol ester (SE), lysophosphatidylcholine, phosphatidylcholine, phosphatidylethanolamine, and several fatty acid (FA) classes in coral propagules incubated with 1 M PG or EG and kept at 5 °C for 6 h. Moreover, we examined seasonal changes in the aforementioned lipid classes in coral larvae. S. caliendrum incubated with 0.5 M PG or Me2SO and chilled for 2 h exhibited a viability rate of 11 ± 11%, whereas P. verrucosa exhibited a viability rate of 22 ± 14% after being chilled for 4 h. Furthermore, the results indicated that chilling exposure did not affect the content of any investigated lipid class in either species. The higher concentration of SE in P. verrucosa compared to S. caliendrum larvae may have contributed to the different cryotolerance displayed by the 2 larval species. A year-round lipid analysis of both coral larvae species revealed trends of homeoviscous adaptation and seasonal enhancement of lipid fluxes from symbionts to the host. During winter, the cholesterol/phospholipid ratio significantly increased, and P. verrucosa larvae exhibited an averagely decrease in FA chain lengths. During spring and summer, intracellular lipid content in the form of TAGs and WEs significantly increased in both species, and the average content of Symbiodiniaceae-derived FAs increased in P. verrucosa larvae. We concluded that the low cryotolerance displayed by S. caliendrum and P. verrucosa larvae is attributable to their chilling-sensitive membrane lipid profile and the high intracellular lipid content provided by their endosymbionts.
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Affiliation(s)
- Luca Cirino
- Department of Marine Biotechnology and Resources, National Sun Yai-sen University, Kaohsiung, Taiwan; National Museum of Marine Biology & Aquarium, Pingtung, Taiwan
| | - Sujune Tsai
- Department of Post Modern Agriculture, Mingdao University, Chang Hua, Taiwan.
| | - Zhi-Hong Wen
- Department of Marine Biotechnology and Resources, National Sun Yai-sen University, Kaohsiung, Taiwan
| | - Li-Hsueh Wang
- National Museum of Marine Biology & Aquarium, Pingtung, Taiwan; Institute of Marine Biology, National Dong Hwa University, Pingtung, Taiwan
| | - Hung-Kai Chen
- National Museum of Marine Biology & Aquarium, Pingtung, Taiwan
| | - Jing-O Cheng
- National Museum of Marine Biology & Aquarium, Pingtung, Taiwan
| | - Chiahsin Lin
- National Museum of Marine Biology & Aquarium, Pingtung, Taiwan; Institute of Marine Biology, National Dong Hwa University, Pingtung, Taiwan.
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Kullapanich C, Jandang S, Palasuk M, Viyakarn V, Chavanich S, Somboonna N. First dynamics of bacterial community during development of Acropora humilis larvae in aquaculture. Sci Rep 2021; 11:11762. [PMID: 34083731 PMCID: PMC8175334 DOI: 10.1038/s41598-021-91379-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 05/19/2021] [Indexed: 11/20/2022] Open
Abstract
A symbiosis of bacterial community (sometimes called microbiota) play essential roles in developmental life cycle and health of coral, starting since a larva. For examples, coral bacterial holobionts function nitrogen fixation, carbon supply, sulfur cycling and antibiotic production. Yet, a study of the dynamic of bacteria associated coral larvae development is complicated owning to a vast diversity and culturable difficulty of bacteria; hence this type of study remains unexplored for Acropora humilis larvae in Thai sea. This study represented the first to utilize 16S rRNA gene sequencing to describe the timely bacterial compositions during successfully cultured and reared A. humilis larval transformation in aquaculture (gametes were collected from Sattahip Bay, Chonburi province, Thailand), from gamete spawning (0 h) and fertilization stage (1 h), to embryonic cleavage (8 h), round cell development (28, 39 and 41 h), and planula formation (48 h). The sequencing results as estimated by Good’s coverage at genus level covered 99.65 ± 0.24% of total bacteria. While core phyla of bacteria were observed (Proteobacteria, Actinobacteria, Firmicutes and Bacteroidetes), changes in bacterial population structures and differential predominant core bacterial orders were denoted for each larval developmental stage, from fertilization to embryonic cleavage and subsequently from the embryonic cleavage to round cell development (P = 0.007). For instances, Pseudoalteromonas and Oceanospirillales were found prevalent at 8 h, and Rhizobiales were at 48 h. The bacterial population structures from the round cell stage, particularly at 41 h, showed gradual drift towards those of the planula formation stage, suggesting microbial selection. Overall, this study provides preliminary insights into the dynamics of bacterial community and their potentially functional association (estimated from the bacterial compositions) during the developmental embryonic A. humilis in a cultivation system in Southeast Asia region.
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Affiliation(s)
- Chitrasak Kullapanich
- Department of Microbiology, Faculty of Science, Chulalongkorn University, Phyathai Road, Pathumwan, Bangkok, 10330, Thailand.,Microbiome Research Unit for Probiotics in Food and Cosmetics, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand
| | - Suppakarn Jandang
- Reef Biology Research Group, Department of Marine Science, Faculty of Science, Chulalongkorn University, Phyathai Road, Pathumwan, Bangkok, 10330, Thailand
| | - Matanee Palasuk
- Department of Microbiology, Faculty of Science, Chulalongkorn University, Phyathai Road, Pathumwan, Bangkok, 10330, Thailand.,Microbiome Research Unit for Probiotics in Food and Cosmetics, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand
| | - Voranop Viyakarn
- Reef Biology Research Group, Department of Marine Science, Faculty of Science, Chulalongkorn University, Phyathai Road, Pathumwan, Bangkok, 10330, Thailand
| | - Suchana Chavanich
- Reef Biology Research Group, Department of Marine Science, Faculty of Science, Chulalongkorn University, Phyathai Road, Pathumwan, Bangkok, 10330, Thailand. .,Center of Excellence for Marine Biotechnology, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand.
| | - Naraporn Somboonna
- Department of Microbiology, Faculty of Science, Chulalongkorn University, Phyathai Road, Pathumwan, Bangkok, 10330, Thailand. .,Microbiome Research Unit for Probiotics in Food and Cosmetics, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand.
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5
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Gao W, Li L, Zhang X, Luo L, He Y, Cong C, Gao D. Nanomagnetic liposome-encapsulated parthenolide and indocyanine green for targeting and chemo-photothermal antitumor therapy. Nanomedicine (Lond) 2020; 15:871-890. [PMID: 32223505 DOI: 10.2217/nnm-2019-0038] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Aim: To synthesize a drug-delivery system with chemo-photothermal function and magnetic targeting, to validate its antitumor effect. Materials & methods: Parthenolide (PTL), employing chemotherapy and indocyanine green (ICG) providing phototherapy, were encased separately in the lipid and aqueous phases of liposomes (Lips). The Fe3O4 nanoparticles (MNPs), endowing magnetic targeting, were modified on the surface of Lips. The antitumor effects were investigated in vitro and in vivo. Results: ICG-PTL-Lips@MNPs showed outstanding synergistic antitumor efficacy in vitro and in vivo. Especially, after 14-day treatment, the tumor volumes decreased significantly and the biotoxicity was very low. Conclusion: The designed ICG-PTL-Lips@MNPs possess synergistic effects of chemotherapy, photothermal and targeting therapy, which are expected to provide an alternative way to further improve antitumor efficacy.
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Affiliation(s)
- Wenbin Gao
- Applying Chemistry Key Laboratory of Hebei Province, Department of Bioengineer, Yanshan University, No. 438 Hebei Street, Qinhuangdao, 066004, PR China
| | - Lei Li
- Applying Chemistry Key Laboratory of Hebei Province, Department of Bioengineer, Yanshan University, No. 438 Hebei Street, Qinhuangdao, 066004, PR China.,State Key Laboratory of Metastable Materials Science & Technology, Yanshan University, No. 438 Hebei Street, Qinhuangdao, 066004, PR China
| | - Xuwu Zhang
- Applying Chemistry Key Laboratory of Hebei Province, Department of Bioengineer, Yanshan University, No. 438 Hebei Street, Qinhuangdao, 066004, PR China
| | - Liyao Luo
- Applying Chemistry Key Laboratory of Hebei Province, Department of Bioengineer, Yanshan University, No. 438 Hebei Street, Qinhuangdao, 066004, PR China
| | - Yuchu He
- Applying Chemistry Key Laboratory of Hebei Province, Department of Bioengineer, Yanshan University, No. 438 Hebei Street, Qinhuangdao, 066004, PR China
| | - Cong Cong
- Applying Chemistry Key Laboratory of Hebei Province, Department of Bioengineer, Yanshan University, No. 438 Hebei Street, Qinhuangdao, 066004, PR China.,Hebei Province Asparagus Industry Technology Research Institute, No. 12 Donghai Road, Qinhuangdao, 066318, PR China
| | - Dawei Gao
- Applying Chemistry Key Laboratory of Hebei Province, Department of Bioengineer, Yanshan University, No. 438 Hebei Street, Qinhuangdao, 066004, PR China.,State Key Laboratory of Metastable Materials Science & Technology, Yanshan University, No. 438 Hebei Street, Qinhuangdao, 066004, PR China.,Hebei Province Asparagus Industry Technology Research Institute, No. 12 Donghai Road, Qinhuangdao, 066318, PR China
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6
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Cirino L, Wen ZH, Hsieh K, Huang CL, Leong QL, Wang LH, Chen CS, Daly J, Tsai S, Lin C. First instance of settlement by cryopreserved coral larvae in symbiotic association with dinoflagellates. Sci Rep 2019; 9:18851. [PMID: 31827193 PMCID: PMC6906398 DOI: 10.1038/s41598-019-55374-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 11/03/2019] [Indexed: 02/05/2023] Open
Abstract
Coral reefs are suffering on a global scale due to human impacts, thereby necessitating cryopreservation efforts. The objective of this study was to develop a suitable vitrification and laser warming protocol for larvae of the scleractinian coral Seriatopora caliendrum, which inherit their dinoflagellate algal symbionts vertically. Toxicity experiments were conducted with the cryoprotectants (CPAs) ethylene glycol (EG), propylene glycol (PG), dimethyl sulfoxide (DMSO), glycerol (GLY), and methanol (METH; listed in order from least to most toxic), and larvae were subjected to vitrification and laser warming using 2 M EG + 1 M PG and 2 M EG + 1 M DMSO. Vitrification and laser warming (300 V, 10 ms pulse width, 2 mm beam diameter) using a vitrification solution of 2 M EG + 1 M PG, 40% w/v Ficoll, and 10% v/v gold nanobars (GNB) at a final concentration of 1.2 × 1018 GNB/mL and a characteristic wavelength of 535 nm resulted in larvae with vitality and settlement percentages of 55 and 9%, respectively. This represents the first successful instance of cryopreservation of coral larvae that proceeded to settle upon warming, and suggests that the vitrification and ultra-fast laser warming approach may be applicable to other threatened marine species.
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Affiliation(s)
- Luca Cirino
- Department of Marine Biotechnology and Resources, National Sun Yai-sen University, Kaohsiung, Taiwan
- National Museum of Marine Biology & Aquarium, Pingtung, Taiwan
| | - Zhi-Hong Wen
- Department of Marine Biotechnology and Resources, National Sun Yai-sen University, Kaohsiung, Taiwan
| | - Kevin Hsieh
- He Wei Precision Company Limited, Hsinchu, Taiwan
| | - Cheng-Liang Huang
- Department of Applied Chemistry, National Chiayi University, Chiayi, Taiwan
| | - Qi Lun Leong
- Department of Applied Chemistry, National Chiayi University, Chiayi, Taiwan
| | - Li-Hsueh Wang
- National Museum of Marine Biology & Aquarium, Pingtung, Taiwan
- Institute of Marine Biology, National Dong Hwa University, Pingtung, Taiwan
| | - Chii-Shiarng Chen
- Department of Marine Biotechnology and Resources, National Sun Yai-sen University, Kaohsiung, Taiwan
- National Museum of Marine Biology & Aquarium, Pingtung, Taiwan
- Institute of Marine Biology, National Dong Hwa University, Pingtung, Taiwan
| | - Jonathan Daly
- Smithsonian Conservation Biology Institute, Washington, USA
- Hawaii Institute of Marine Biology, Hawaii, USA
| | - Sujune Tsai
- Department of Post Modern Agriculture, Mingdao University, Chang Hua, Taiwan.
| | - Chiahsin Lin
- National Museum of Marine Biology & Aquarium, Pingtung, Taiwan.
- Institute of Marine Biology, National Dong Hwa University, Pingtung, Taiwan.
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Lin C, Thongpoo P, Juri C, Wang LH, Meng PJ, Kuo FW, Tsai S. Cryopreservation of a Thermotolerant Lineage of the Coral Reef Dinoflagellate Symbiodinium. Biopreserv Biobank 2019; 17:520-529. [DOI: 10.1089/bio.2019.0019] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Chiahsin Lin
- National Museum of Marine Biology and Aquarium, Pingtung, Taiwan
- Institute of Marine Biology, National Dong Hwa University, Pingtung, Taiwan
| | - Preeyanuch Thongpoo
- Department of Science (Biology), Faculty of Science and Technology, Phuket Rajabhat University, Muang Phuket, Thailand
| | - Cynthia Juri
- National Museum of Marine Biology and Aquarium, Pingtung, Taiwan
| | - Li-Hsueh Wang
- National Museum of Marine Biology and Aquarium, Pingtung, Taiwan
- Institute of Marine Biology, National Dong Hwa University, Pingtung, Taiwan
| | - Pei-Jie Meng
- National Museum of Marine Biology and Aquarium, Pingtung, Taiwan
- Institute of Marine Biology, National Dong Hwa University, Pingtung, Taiwan
| | - Fu-Wen Kuo
- National Museum of Marine Biology and Aquarium, Pingtung, Taiwan
| | - Sujune Tsai
- Department of Post Modern Agriculture, Mingdao University, Chang Hua, Taiwan
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8
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Zhang X, Liu Y, Luo L, Li L, Xing S, Yin T, Bian K, Zhu R, Gao D. A chemo-photothermal synergetic antitumor drug delivery system: Gold nanoshell coated wedelolactone liposome. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 101:505-512. [PMID: 31029345 DOI: 10.1016/j.msec.2019.04.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 08/08/2018] [Accepted: 04/03/2019] [Indexed: 12/21/2022]
Abstract
In this study, an antitumor drug delivery system, gold nanoshell coated wedelolactone liposomes (AuNS-Wed-Lip), were designed and synthesized. In the drug delivery system, wedelolactone liposome and gold-nanoshell were linked by l-cysteine, which had been shown an effective nanocarrier for antitumor drug delivery, on-demand drug release, and phototherapy under near-infrared (NIR) light irradiation. It was capable of absorbing 780-850 nm NIR light and converting light energy to heat rapidly. The hyperthermia promoted wedelolactone release rapidly from the systems. The release amount of AuNS-Wed-Lip under NIR irradiation reached up to 97.34% over 8 h, achieving the on-demand drug release. Moreover, a high inhibition rate up to 95.73% for 143B tumor cells by AuNS-Wed-Lip upon laser irradiation at 808 nm was observed. The excellent inhibition efficacy was also displayed in vivo antitumor study with S180 tumor-bearing mice. The results demonstrated that AuNS-Wed-Lip, as an antitumor drug delivery system, achieved chemo-photothermal synergetic effect, which has great potential in cancer therapy.
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Affiliation(s)
- Xuwu Zhang
- Applying Chemistry Key Lab of Hebei Province, Department of Bioengineer, Yanshan University, No.438 Hebei Street, Qinhuangdao 066004, China
| | - Yanping Liu
- Applying Chemistry Key Lab of Hebei Province, Department of Bioengineer, Yanshan University, No.438 Hebei Street, Qinhuangdao 066004, China
| | - Liyao Luo
- Applying Chemistry Key Lab of Hebei Province, Department of Bioengineer, Yanshan University, No.438 Hebei Street, Qinhuangdao 066004, China
| | - Lei Li
- Applying Chemistry Key Lab of Hebei Province, Department of Bioengineer, Yanshan University, No.438 Hebei Street, Qinhuangdao 066004, China
| | - Shanshan Xing
- Applying Chemistry Key Lab of Hebei Province, Department of Bioengineer, Yanshan University, No.438 Hebei Street, Qinhuangdao 066004, China
| | - Tian Yin
- Applying Chemistry Key Lab of Hebei Province, Department of Bioengineer, Yanshan University, No.438 Hebei Street, Qinhuangdao 066004, China
| | - Kexin Bian
- Applying Chemistry Key Lab of Hebei Province, Department of Bioengineer, Yanshan University, No.438 Hebei Street, Qinhuangdao 066004, China
| | - Ruiyan Zhu
- Applying Chemistry Key Lab of Hebei Province, Department of Bioengineer, Yanshan University, No.438 Hebei Street, Qinhuangdao 066004, China; Hebei Province Asparagus Industry Technology Research Institute, China
| | - Dawei Gao
- Applying Chemistry Key Lab of Hebei Province, Department of Bioengineer, Yanshan University, No.438 Hebei Street, Qinhuangdao 066004, China.
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Fedry J, Forcina J, Legrand P, Péhau-Arnaudet G, Haouz A, Johnson M, Rey FA, Krey T. Evolutionary diversification of the HAP2 membrane insertion motifs to drive gamete fusion across eukaryotes. PLoS Biol 2018; 16:e2006357. [PMID: 30102690 PMCID: PMC6089408 DOI: 10.1371/journal.pbio.2006357] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Accepted: 07/09/2018] [Indexed: 12/20/2022] Open
Abstract
HAPLESS2 (HAP2) is a broadly conserved, gamete-expressed transmembrane protein that was shown recently to be structurally homologous to viral class II fusion proteins, which initiate fusion with host cells via insertion of fusion loops into the host membrane. However, the functional conformation of the HAP2 fusion loops has remained unknown, as the reported X-ray structure of Chlamydomonas reinhardtii HAP2 lacked this critical region. Here, we report a structure-guided alignment that reveals diversification of the proposed HAP2 fusion loops. Representative crystal structures show that in flowering plants, HAP2 has a single prominent fusion loop projecting an amphipathic helix at its apex, while in trypanosomes, three small nonpolar loops of HAP2 are poised to interact with the target membrane. A detailed structure-function analysis of the Arabidopsis HAP2 amphipathic fusion helix defines key residues that are essential for membrane insertion and for gamete fusion. Our study suggests that HAP2 may have evolved multiple modes of membrane insertion to accommodate the diversity of membrane environments it has encountered during eukaryotic evolution. The fusion of gamete plasma membranes is the fundamental cellular event that brings two parental cells together to form a new individual, yet we know surprisingly little about this process at the molecular level. HAPLESS 2 (HAP2) is a conserved sperm plasma membrane protein that is essential for gamete fusion in a diverse array of eukaryotes. It was recently shown to share a common ancestor with viral proteins that drive fusion of the viral envelope with host membranes, but its mechanism of action remained elusive, since the reported structure did not resolve the proposed membrane interaction surface. Here, we report two new HAP2 structures revealing that HAP2 has evolved diverse membrane interaction surfaces. In the flowering plants, HAP2 uses an amphipathic helix that presents nonpolar residues to the target membrane; in trypanosomes, the membrane interaction surface comprises three shallow nonpolar loops.
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Affiliation(s)
- Juliette Fedry
- Unité de Virologie Structurale, Institut Pasteur, Paris, France
- CNRS UMR 3569, Paris, France
- Universite Paris Descartes Sorbonne Paris Cité, Institut Pasteur, Paris, France
- Institute of Virology, Hannover Medical School, Hannover, Germany
| | - Jennifer Forcina
- Brown University, Department of Molecular Biology, Cell Biology, and Biochemistry, Providence, Rhode Island, United States of America
| | - Pierre Legrand
- Synchrotron SOLEIL, L'Orme des Merisiers, Gif-sur-Yvette, France
| | | | - Ahmed Haouz
- Protéopôle, CNRS UMR 3528, Institut Pasteur, Paris, France
| | - Mark Johnson
- Brown University, Department of Molecular Biology, Cell Biology, and Biochemistry, Providence, Rhode Island, United States of America
- * E-mail: (MJ); (FAR); (TK)
| | - Felix A. Rey
- Unité de Virologie Structurale, Institut Pasteur, Paris, France
- CNRS UMR 3569, Paris, France
- * E-mail: (MJ); (FAR); (TK)
| | - Thomas Krey
- Unité de Virologie Structurale, Institut Pasteur, Paris, France
- CNRS UMR 3569, Paris, France
- Institute of Virology, Hannover Medical School, Hannover, Germany
- German Center for Infection Research (DZIF), Hannover, Germany
- * E-mail: (MJ); (FAR); (TK)
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Li F, Yang H, Bie N, Xu Q, Yong T, Wang Q, Gan L, Yang X. Zwitterionic Temperature/Redox-Sensitive Nanogels for Near-Infrared Light-Triggered Synergistic Thermo-Chemotherapy. ACS APPLIED MATERIALS & INTERFACES 2017; 9:23564-23573. [PMID: 28665111 DOI: 10.1021/acsami.7b08047] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Ideal anticancer nano drug delivery systems (NDDSs) need to overcome a series of physiological barriers including blood circulation, tumor accumulation, tumor penetration, internalization by cancer cells, lysosomal escape, and on-demand intracellular drug release following systemic administration. However, it remains a big challenge to construct NDDSs that can overcome all the barriers at the same time. Here, we develop zwitterionic temperature/redox-sensitive nanogels loaded with near-infrared (NIR) dye Indocyanine green (ICG) and anticancer drug doxorubicin (I/D@NG). I/D@NG exhibits enhanced photothermal effects, and NIR irradiation markedly decreases its diameter. NIR irradiation at tumor sites significantly enhances tumor accumulation, tumor penetration, and cellular uptake of I/D@NG with prolonged blood circulation time. Furthermore, I/D@NG can effectively escape from lysosomes by singlet oxygen-induced lysosomal disruption, and DOX is then sufficiently released from the nanogels to the nucleus in response to high intracellular GSH and photothermal effects. This nanoplatform for thermo-chemotherapy not only efficiently exerts synergistic cytotoxicity but also overcomes all the physiological barriers of therapeutic agent, thereby providing a substantial in vivo anticancer effect. The multiple functions of I/D@NG provide new insights into designing nanoplatforms for synergistic cancer therapy.
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Affiliation(s)
- Fuying Li
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, China
| | - Hao Yang
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, China
| | - Nana Bie
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, China
| | - Qingbo Xu
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, China
| | - Tuying Yong
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, China
| | - Qin Wang
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology , Wuhan 430074, China
| | - Lu Gan
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, China
| | - Xiangliang Yang
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, China
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Zhang X, Li N, Liu Y, Ji B, Wang Q, Wang M, Dai K, Gao D. On-demand drug release of ICG-liposomal wedelolactone combined photothermal therapy for tumor. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2016; 12:2019-2029. [DOI: 10.1016/j.nano.2016.05.013] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Revised: 04/06/2016] [Accepted: 05/18/2016] [Indexed: 01/16/2023]
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12
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Tsai S, Yen W, Chavanich S, Viyakarn V, Lin C. Development of Cryopreservation Techniques for Gorgonian (Junceella juncea) Oocytes through Vitrification. PLoS One 2015; 10:e0123409. [PMID: 26010144 PMCID: PMC4444251 DOI: 10.1371/journal.pone.0123409] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Accepted: 02/19/2015] [Indexed: 11/30/2022] Open
Abstract
Gorgonian corals are slowly declining due to human interaction and environmental impacts. Cryopreservation of gorgonian corals is an ex-situ method of conservation, ensuring future reproduction. The present study assessed the vitrification properties of cryoprotectant (CPT) mixtures using the cryotop, cryoloop and open pulled straw (OPS) cryopereservation methods prior to experimentation on gorgonian (Junceella juncea) oocytes. Investigations of the equilibration and vitrification solutions’ (ES and VS) effect on oocytes throughout different incubation periods were conducted. The cryotop method was found to be the most successful in ensuring vitrification. The most favourable VS was composed of propylene glycol (PG), ethylene glycol (EG) and methanol with concentrations of 3.5M, 1.5M and 2M respectively. Experiments were performed using the cryotop method to cryopreserve Junceella juncea oocytes using VS2, the solution had the least impact on oocytes at 5°C rather than at 26°C. The success of the vitrification procedures was determined by adenosine triphosphate (ATP) levels in cooled-thaw oocytes and the highest viability obtained from the present study was 76.6 ± 6.2%. This study provides information regarding gorgonian corals’ tolerance and viability throughout vitrification to further advance the vitrification protocol on whip corals.
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Affiliation(s)
- Sujune Tsai
- Department of Biotechnology, Mingdao University, Peetow, Chang Hua, Taiwan
- Department of Post Modern Agriculture, Mingdao University, Peetow, Chang Hua, Taiwan
| | - Wish Yen
- Institute of Biochemistry & Environmental Science, University of Ottawa, Ottawa, ON, Canada
| | - Suchana Chavanich
- Reef Biology Research Group, Department of Marine Science, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Voranop Viyakarn
- Reef Biology Research Group, Department of Marine Science, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Chiahsin Lin
- National Museum of Marine Biology & Aquarium, Checheng, Pingtung, Taiwan
- Institute of Marine Biology, National Dong Hwa University, Checheng, Pingtung, Taiwan
- * E-mail:
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Feuillassier L, Martinez L, Romans P, Engelmann-Sylvestre I, Masanet P, Barthélémy D, Engelmann F. Survival of tissue balls from the coral Pocillopora damicornis L. exposed to cryoprotectant solutions. Cryobiology 2014; 69:376-85. [PMID: 25238734 DOI: 10.1016/j.cryobiol.2014.08.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 07/18/2014] [Accepted: 08/12/2014] [Indexed: 10/24/2022]
Abstract
In this study, the tolerance of tissue balls (TBs, 100-300 μm in diameter) from the coral Pocillopora damicornis produced using mechanical excision to exposure to cryoprotectant (CPA) solutions was tested. TBs were treated for 20 min at room temperature with solutions of ethylene glycol (EG), methanol (Met), glycerol (Gly) or dimethyl sulfoxide (Me2SO) at concentrations between 1.0 and 4.5M. Two parameters were used to evaluate the survival of TBs following CPA treatment. The Undamaged Duration of Tissue Balls (expressed in h) corresponded to the time period during which the membrane surface of TBs remained smooth and their motility was preserved. Tissue Ball Regression (expressed in μm/h) corresponded to the size reduction of TBs over time. TBs tolerated exposure to all CPAs tested at the three lower concentrations employed (1.0 M, 1.5 M and 2.0 M). No survival was achieved following exposure to a 4.5 M CPA solution. At concentrations of 3.0 and 4.0 M, higher Undamaged Duration of Tissue Balls and lower Tissue Ball Regression were obtained following treatment with EG compared to the other three CPAs. Our experiments show that TBs constitute a good experimental material to evaluate CPA toxicity on corals using large numbers of samples. Performing preliminary experiments with TBs may allow reducing the number of tests carried out with less easily available coral forms such as planulae, thereby preserving larval stocks.
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Affiliation(s)
- Lionel Feuillassier
- Sorbonne Universités, UPMC Univ Paris 06, UMS 2348, Centre de Ressources Biologiques Marines, Observatoire Océanologique de Banyuls sur mer, F-75005 Paris, France; IRD, UMR DIADE, 911 Avenue Agropolis, BP 64501, 34394 Montpellier Cedex 5, France
| | - Lucie Martinez
- Sorbonne Universités, UPMC Univ Paris 06, UMS 2348, Centre de Ressources Biologiques Marines, Observatoire Océanologique de Banyuls sur mer, F-75005 Paris, France
| | - Pascal Romans
- Sorbonne Universités, UPMC Univ Paris 06, UMS 2348, Centre de Ressources Biologiques Marines, Observatoire Océanologique de Banyuls sur mer, F-75005 Paris, France
| | | | - Patrick Masanet
- Aquarium de Canet-en-Roussillon, 2 boulevard de la Jetée, 66140 Canet-en-Roussillon, France
| | - Dominique Barthélémy
- Océanopolis, Port de plaisance du Moulin Blanc, BP91039, 29210 Brest Cedex 1, France
| | - Florent Engelmann
- IRD, UMR DIADE, 911 Avenue Agropolis, BP 64501, 34394 Montpellier Cedex 5, France.
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