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Kargari M, Sharafi M, Torshizi MAK, Hezavehei M, Zanganeh Z. Effects of hydroxytyrosol on post-thaw quality of rooster sperm. Reprod Domest Anim 2024; 59:e14588. [PMID: 38822558 DOI: 10.1111/rda.14588] [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: 12/11/2023] [Revised: 04/02/2024] [Accepted: 04/29/2024] [Indexed: 06/03/2024]
Abstract
Semen cryopreservation is one of the most important reproduction techniques in the livestock and poultry industry. Cryopreservation induces cold stress, generating reactive oxygen species (ROS) and oxidative stress causing structural and biochemical damages in sperm. In this study, we evaluated the effects of the hydroxytyrosol (HT), as an antioxidant, at the concentrations of 0, 25, 50, and 100 μg/mL on post-thaw semen quality metrics in rooster. Semen samples were collected twice a week from 10 roosters (29 weeks), processed and frozen according to experimental groups. Different quality parameters, including total motility, progressive motility, viability, morphology, membrane integrity, and malondialdehyde were measured after thawing. Results showed that 25 and 50 μg/mL of HT produced the highest percentage of total motility (51.01 ± 2.19 and 50.15 ± 2.19, respectively) and progressive motility (35.74 ± 1.34 and 35.15 ± 1.34, respectively), membrane integrity (48.00 ± 2.18 and 46.75 ± 2.18, respectively) as well as viability (53.00 ± 2.17 and 52.50 ± 2.17, respectively) compared with the other groups (p < .05). The group with 25 μg/mL of HT showed the lowest significant (p < .05) MDA concentration (1.81 ± 0.25). Our results showed that the effect of HT was not dose-dependent and optimum concentration of HT could improve functional parameters of rooster sperm after freezing-thawing. These findings suggest that HT may have protective effects on the rooster sperm during the freezing-thawing process.
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Affiliation(s)
- Mohammad Kargari
- Department of Poultry Science, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
| | - Mohsen Sharafi
- Department of Poultry Science, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
| | | | - Maryam Hezavehei
- Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Zeynab Zanganeh
- Department of Poultry Science, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
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Aktar A, Cakmak S, Toker MB, Cakmak İ, Bağci K, Uzun ÜC, Alcay S. Effects of alpha lipoic acid supplementation on post-thaw quality of drone semen. Cryobiology 2024; 114:104849. [PMID: 38242276 DOI: 10.1016/j.cryobiol.2024.104849] [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: 09/11/2023] [Revised: 01/09/2024] [Accepted: 01/14/2024] [Indexed: 01/21/2024]
Abstract
This study aimed to determine the effect of alpha-lipoic acid (ALA) on post-thaw quality of bee semen. In the study, semen from sexually mature drone were collected. A series of experiments were carried out in which the retrieved semen was diluted with diluents containing different ALA concentrations or without ALA supplement (control). Cryopreserved sperm were thawed, and evaluated for motility (phase-contrast microscope), plasma and acrosomal membrane integrity, mitochondrial membrane potential, and DNA fregmantation. The results obtained showed that the highest motility after thawing was observed in the groups containing ALA 0.25 mmol (P < 0.05). Likewise, plasma membrane integrity was found to be better preserved in the ALA 0.25 mmol-added group than in other groups. Acrosomal integrity were also higher in the ALA-containing groups than in the control group (P < 0.05). The results of this study show that ALA supplementation especially at 0.25 mmol improved post-thawed sperm motility, plasma membrane functionality, and mitochondrial membrane potantial quality of honeybee semen.
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Affiliation(s)
- Ahmet Aktar
- Bursa Uludağ Üniversitesi Veteriner Fakültesi, Dölerme ve Suni Tohumlama A.D., Görükle Kampüsü, Bursa, Turkey.
| | - Selvinar Cakmak
- Bursa Uludağ Üniversitesi, Arıcılık Geliştirme-Uygulama ve Araştırma Merkezi-AGAM, Görükle Kampüsü, Bursa, Turkey
| | - Mehmed Berk Toker
- Bursa Uludağ Üniversitesi Veteriner Fakültesi, Dölerme ve Suni Tohumlama A.D., Görükle Kampüsü, Bursa, Turkey
| | - İbrahim Cakmak
- Bursa Uludağ Üniversitesi, Arıcılık Geliştirme-Uygulama ve Araştırma Merkezi-AGAM, Görükle Kampüsü, Bursa, Turkey
| | - Kemal Bağci
- Bursa Uludağ Üniversitesi Veteriner Fakültesi, Dölerme ve Suni Tohumlama A.D., Görükle Kampüsü, Bursa, Turkey
| | - Ümit Can Uzun
- Bursa Uludağ Üniversitesi Veteriner Fakültesi, Dölerme ve Suni Tohumlama A.D., Görükle Kampüsü, Bursa, Turkey
| | - Selim Alcay
- Bursa Uludağ Üniversitesi Veteriner Fakültesi, Dölerme ve Suni Tohumlama A.D., Görükle Kampüsü, Bursa, Turkey
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Sameni M, Moradbeigi P, Hosseini S, Ghaderian SMH, Jajarmi V, Miladipour AH, Basati H, Abbasi M, Salehi M. ZIF-8 Nanoparticle: A Valuable Tool for Improving Gene Delivery in Sperm-Mediated Gene Transfer. Biol Proced Online 2024; 26:4. [PMID: 38279129 PMCID: PMC10811821 DOI: 10.1186/s12575-024-00229-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Accepted: 01/11/2024] [Indexed: 01/28/2024] Open
Abstract
Metal-organic frameworks (MOFs) are porous materials with unique characteristics that make them well-suited for drug delivery and gene therapy applications. Among the MOFs, zeolitic imidazolate framework-8 (ZIF-8) has emerged as a promising candidate for delivering exogenous DNA into cells. However, the potential of ZIF-8 as a vector for sperm-mediated gene transfer (SMGT) has not yet been thoroughly explored.This investigation aimed to explore the potential of ZIF-8 as a vector for enhancing genetic transfer and transgenesis rates by delivering exogenous DNA into sperm cells. To test this hypothesis, we employed ZIF-8 to deliver a plasmid expressing green fluorescent protein (GFP) into mouse sperm cells and evaluated the efficiency of DNA uptake. Our findings demonstrate that ZIF-8 can efficiently load and deliver exogenous DNA into mouse sperm cells, increasing GFP expression in vitro. These results suggest that ZIF-8 is a valuable tool for enhancing genetic transfer in SMGT, with important implications for developing genetically modified animals for research and commercial purposes. Additionally, our study highlights the potential of ZIF-8 as a novel class of vectors for gene delivery in reproductive biology.Overall, our study provides a foundation for further research into using ZIF-8 and other MOFs as gene delivery systems in reproductive biology and underscores the potential of these materials as promising vectors for gene therapy and drug delivery.
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Affiliation(s)
- Marzieh Sameni
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Parisa Moradbeigi
- Department of Clinical Sciences, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
| | - Sara Hosseini
- Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Hasti Noavaran Gene Royan, Tehran, Iran
| | | | - Vahid Jajarmi
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Amir Hossein Miladipour
- Department of Nephrology, Clinical Research and Development Center at Shahid Modarres Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hojat Basati
- Tissue Engineering Department, TISSUEHUB Co, Tehran, Iran
- Department of Chemical Engineering, Faculty of Engineering, Tehran University, Tehran, Iran
| | - Maryam Abbasi
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
- Zhino-Gene Research Services Co, Tehran, Iran
| | - Mohammad Salehi
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
- Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Hassan MAE, Khalil WA, Abdelnour SA, Aman RM. Supplementation of Alpha-lipoic acid-loaded nanoliposomes in semen extender improves freezability of buffalo spermatozoa. Sci Rep 2022; 12:22464. [PMID: 36577772 PMCID: PMC9797474 DOI: 10.1038/s41598-022-26960-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Accepted: 12/22/2022] [Indexed: 12/29/2022] Open
Abstract
This research was designed to explore the protective effect of alpha-lipoic acid-loaded nanoliposomes (ALAN) during cryopreservation of buffalo sperm. Buffalo semen was cryopreserved in a tris-citrate egg yolk extender without any supplement (ALAN0, control group) or with ALAN at levels of 25, 50, 75 or 150 µg (ALAN25, ALAN50, ALAN75 and ALAN150, respectively). The ALAN had a size of 171.80 nm and a negative zeta potential (- 43.40 mV). The progressive motility, vitality and membrane integrity significantly improved in all ALAN groups (except ALAN25 for membrane integrity). ALAN150 group exhibited the best values of progressive sperm motility, vitality and membrane integrity after thawing at 37 °C for 30 s or incubated for 2 h at 37 °C and 5% CO2 compared with those in other groups. Both ALAN75 and ALAN150 groups significantly improved the TAC, GR and catalase, while lipid peroxidation and early apoptotic spermatozoa significantly decreased in ALAN150 group followed by ALAN75 group. Collectively, the adding ALAN to buffalo semen freezing extender plays a substantial shielding function against cryodamage by preserving the sperm functional parameters.
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Affiliation(s)
- Mahmoud A. E. Hassan
- grid.418376.f0000 0004 1800 7673Animal Production Research Institute, Agriculture Research Centre, Ministry of Agriculture, Dokki, Giza, 12619 Egypt
| | - Wael A. Khalil
- grid.10251.370000000103426662Department of Animal Production, Faculty of Agriculture, Mansoura University, Mansoura, 35516 Egypt
| | - Sameh A. Abdelnour
- grid.31451.320000 0001 2158 2757Department of Animal Production, Faculty of Agriculture, Zagazig University, Zagazig, 44511 Egypt
| | - Reham Mokhtar Aman
- grid.10251.370000000103426662Department of Pharmaceutics, Faculty of Pharmacy, Mansoura University, Mansoura, Dakahlia, 35516 Egypt
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Najafi A, Daghigh Kia H, Hamishehkar H. Does alpha-lipoic acid-loaded nanostructured lipid carriers improve post-thawed sperm quality and ameliorate apoptosis-related genes of rooster sperm? Poult Sci 2020; 100:357-365. [PMID: 33357700 PMCID: PMC7772701 DOI: 10.1016/j.psj.2020.10.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 08/22/2020] [Accepted: 10/06/2020] [Indexed: 12/04/2022] Open
Abstract
Oxidative stress could be prevented by antioxidant-loaded nanoparticles. The purpose of this study was to assess the effects of 10 (A10), 20 (A20), 30 (A30), 40 (A40), and 50 (A50) μM alpha-lipoic acid and alpha-lipoic acid nanostructured lipid carriers (ALN) at 10 (ALN10), 20 (ALN20), 30 (ALN30), 40 (ALN40), and 50 (ALN50) μM on post-thawed sperm quality, fertility, and apoptosis-related genes of rooster sperm. The extender supplemented with ALN30 led to higher total and progressive motility, straight-line velocity, and linearity in comparison to the control group. The ALN30 resulted in higher percentage of mitochondria activity and glutathione peroxidase level compared with control (P < 0.05). The extender supplemented with ALN30 led to lower percentage of apoptotic sperm, when compared with the control. CASPASE 3 expression in ALN30 was lower (P < 0.05) than the other groups. The results showed that BCL-2 mRNA expression of sperm was significantly (P < 0.05) higher in ALN30 compared with the other groups (P < 0.05). Higher percentages of fertility and hatchability rates were observed in ALN30 group. The results indicate that ALN30 could be regarded as a novel potential cryoprotectant for the cryopreservation of rooster semen. Therefore, nanostructured lipid carriers improve not only the active compound (such as alpha-lipoic acid) of biomedical applicability but also the potential for industrial application in sperm cryopreservation.
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Affiliation(s)
- Abouzar Najafi
- Department of Animal Science, College of Agriculture, University of Tabriz, Tabriz, Iran
| | - Hossein Daghigh Kia
- Department of Animal Science, College of Agriculture, University of Tabriz, Tabriz, Iran.
| | - Hamed Hamishehkar
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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İnanan BE, Kanyılmaz M. Effect of alpha-lipoic acid on oxidative stress, viability and motility in the common carp (Cyprinus carpio) spermatozoa after short-term storage and cryopreservation. Cryobiology 2020; 94:73-79. [PMID: 32315650 DOI: 10.1016/j.cryobiol.2020.04.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 03/18/2020] [Accepted: 04/14/2020] [Indexed: 01/02/2023]
Abstract
As known for different metabolic functions, α-lipoic acid (ALA) has been tested for spermatozoa preservation of animals as well as of human, but not for fish spermatozoa. The present study determined the effects of ALA on short and long-term (cryopreservation) preservation of common carp (Cyprinus carpio) spermatozoa, for the first time. For that, spermatozoa were diluted in extenders containing 0 (control), 0.025, 0.05, 0.1, 0.5, 1, 2, 5, and 10 mM of ALA concentrations in both short-term preservation and cryopreservation. Spermatozoa motility parameters by computer-assisted semen analysis, viability, lipid peroxidation and catalase activity in spermatozoa were conducted in both 2nd and 120th hours of short-term storage and post-thaw samples. Higher percentages of total spermatozoa motility (80 ± 3) and viability (87 ± 3) were observed in 0.5 mM ALA group after 120 h of incubation. In post-thaw samples, higher percentages of these parameters were in 1 mM ALA group (74 ± 3 and 83 ± 2, respectively). Moreover, the results have shown that the addition of ALA until concentrations of 2 mM improved especially spermatozoa curvilinear velocity, maintained viability, and suppressed excessive lipid peroxidation during the preservations. In conclusion, the additions of 0.5 mM ALA for short-term preservation and 1 mM ALA for cryopreservation were the optimal concentrations, and shown the protective effects on common carp spermatozoa, when considering all measured parameters together.
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Affiliation(s)
- Burak Evren İnanan
- Department of Veterinary Science, Eskil Vocational School, Aksaray University, 68800, Aksaray, Turkey.
| | - Mahir Kanyılmaz
- Mediterranean Fisheries Research, Production and Training Institute, 07192, Antalya, Turkey; Department of Resource Management and Fisheries Structures, General Directorate of Fisheries and Aquaculture, 06800, Ankara, Turkey
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Ren F, Feng T, Dai G, Wang Y, Zhu H, Hu J. Lycopene and alpha-lipoic acid improve semen antioxidant enzymes activity and cashmere goat sperm function after cryopreservation. Cryobiology 2018; 84:27-32. [DOI: 10.1016/j.cryobiol.2018.08.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Revised: 07/01/2018] [Accepted: 08/09/2018] [Indexed: 01/12/2023]
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Prathima P, Venkaiah K, Pavani R, Daveedu T, Munikumar M, Gobinath M, Valli M, Sainath SB. α-lipoic acid inhibits oxidative stress in testis and attenuates testicular toxicity in rats exposed to carbimazole during embryonic period. Toxicol Rep 2017; 4:373-381. [PMID: 28959662 PMCID: PMC5615143 DOI: 10.1016/j.toxrep.2017.06.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 06/14/2017] [Accepted: 06/22/2017] [Indexed: 11/16/2022] Open
Abstract
The intrauterine exposure of carbiamzole (CBZ) on male fertility is not well defined. CBZ exposure in utero results in spermatotoxic effects and impaired steroidogenesis in offspring rats at their adulthood. Gestational exposure to CBZ augmented testicular oxidative damage in offspring rats. α-lipoic acid supplementation with its antioxidant properties ameliorated diminished male reproductive health in rats exposed to CBZ prenatally.
The aim of this study was to evaluate the probable protective effect of α-lipoic acid against testicular toxicity in rats exposed to carbimazole during the embryonic period. Time-mated pregnant rats were exposed to carbimazole from the embryonic days 9–21. After completion of the gestation period, all the rats were allowed to deliver pups and weaned. At postnatal day 100, F1 male pups were assessed for the selected reproductive endpoints. Gestational exposure to carbimazole decreased the reproductive organ indices, testicular daily sperm count, epididymal sperm variables viz., sperm count, viable sperm, motile sperm and HOS-tail coiled sperms. Significant decrease in the activity levels of 3β- and 17β-hydroxysteroid dehydrogenases and expression of StAR mRNA levels with a significant increase in the total cholesterol levels were observed in the testis of experimental rats over the controls. These events were also accompanied by a significant reduction in the serum testosterone levels in CBZ exposed rats, indicating reduced steroidogenesis. In addition, the deterioration of the testicular architecture and reduced fertility ability were noticed in the carbimazole exposed rats. Significant reduction in the activity levels of superoxide dismutase, catalase, glutathione reductase, glutathione peroxidase and reduced glutathione content with a significant increase in the levels of lipid peroxidation were observed in the testis of carbimazole exposed rats over the controls. Conversely, supplementation of α-lipoic acid (70 mg/Kg bodyweight) ameliorated the male reproductive health in rats exposed to carbimazole during the embryonic period as evidenced by enhanced reproductive organ weights, selected sperm variables, testicular steroidogenesis, and testicular enzymatic and non-enzymatic antioxidants. To conclude, diminished testicular antioxidant balance associated with reduced spermatogenesis and steroidogenesis might be responsible for the suppressed reproduction in rats exposed to the carbimazole transplacentally. On the other hand, α-lipoic acid through its antioxidant and steroidogenic properties mitigated testicular toxicity which eventually restored the male reproductive health of carbimazole-exposed rats.
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Affiliation(s)
- P Prathima
- Department of Biotechnology, Vikrama Simhapuri University, Nellore-524003, AP, India, India
| | - K Venkaiah
- Department of Biotechnology, Vikrama Simhapuri University, Nellore-524003, AP, India, India
| | - R Pavani
- Department of Biotechnology, Vikrama Simhapuri University, Nellore-524003, AP, India, India
| | - T Daveedu
- Department of Biotechnology, Vikrama Simhapuri University, Nellore-524003, AP, India, India
| | - M Munikumar
- Biomedical Informatics Centre, National Institute of Nutrition-ICMR, Jamia Islamia (Post), Hyderabad-500007, Telangana, India, India
| | - M Gobinath
- Department of Pharmacy, Ratnam Institute of Pharmacy, Nellore-524346, AP, India
| | - M Valli
- Department of Genetics, Narayana Medical College, Nellore-524003, AP, India
| | - S B Sainath
- Department of Biotechnology, Vikrama Simhapuri University, Nellore-524003, AP, India, India
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Evaluation of ram semen enrichment with oleic acid on different spermatozoa parameters during low temperature liquid storage. Small Rumin Res 2017. [DOI: 10.1016/j.smallrumres.2017.03.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Fayyaz MH, Ahmad M, Ahmad N. Survival of buffalo bull spermatozoa: effect on structure and function due to alpha-lipoic acid and cholesterol-loaded cyclodextrin. Andrologia 2016; 49. [DOI: 10.1111/and.12652] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/13/2016] [Indexed: 12/18/2022] Open
Affiliation(s)
- M. H. Fayyaz
- Department of Theriogenology; University of Veterinary and Animal Sciences; Lahore Pakistan
- Arid Zone Research Institute; Pakistan Agricultural Research Council; Bahawalpur Pakistan
| | - M. Ahmad
- Department of Theriogenology; University of Veterinary and Animal Sciences; Lahore Pakistan
| | - N. Ahmad
- Department of Theriogenology; University of Veterinary and Animal Sciences; Lahore Pakistan
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11
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Abstract
SummaryAlpha-lipoic acid (ALA) is known to be a natural antioxidant. The aim of the present study was to evaluate the cryoprotective effect of ALA on the motility of boar spermatozoa and its antioxidant effect on boar spermatozoa during freezing–thawing. Different concentrations (2.0, 4.0, 6.0, 8.0 or 10.0 mg/ml) of ALA were added to the extender used to freeze boar semen, and the effects on the quality and endogenous antioxidant enzyme activities of frozen–thawed spermatozoa were assessed. The results indicated that the addition of ALA to the extender resulted in a higher percentage of motile spermatozoa post-thaw (P < 0.05). The activities of superoxide dismutase, lactate dehydrogenase, glutamic-oxaloacetic transaminase and catalase improved after adding ALA to the extender (P < 0.05). Artificial insemination results showed that pregnancy rate and litter size were significantly higher at 6.0 mg/ml in the ALA group than in the control group (P < 0.05). In conclusion, ALA conferred a cryoprotective capacity to the extender used for boar semen during the process of freezing–thawing, and the optimal concentration of ALA for the frozen extender was 6.0 mg/ml.
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Methionine supplementation improves ram sperm parameters during liquid storage at 5 °C. Cryobiology 2012; 65:335-7. [DOI: 10.1016/j.cryobiol.2012.09.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Revised: 08/12/2012] [Accepted: 09/10/2012] [Indexed: 11/19/2022]
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Zhou W, Gong C, Xue R, Cao G, Cao J, Ye A, Weng H, Wang Y. Germline transformation of the silkworm Bombyx mori L. by sperm-mediated gene transfer. Biol Reprod 2012; 87:144. [PMID: 23100618 DOI: 10.1095/biolreprod.112.102822] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The domesticated silkworm Bombyx mori L. has important roles in basic biological research and applied science. To explore the practical use of transgenic technology in agricultural silkworm varieties, we fused the neomycin-resistance gene (Neo(R)) and the green fluorescent protein gene (gfp) into the piggyBac-based transposon vector and transduced it into silkworms by sperm-mediated gene transfer (SMGT). Fluorescence observation indicated the positive rate of G0 egg-batches is 72.7%. After screening against the antibiotic G418, development of individual larvae in the same brood showed significant size differences. PCR detection indicated the existence of gfp and Neo(R) and confirmed the positive rate of transgenesis as 0.47%. Southern blot analysis confirmed the presence of the exogenous genes in the genome of G7 larvae. These results show that our strategy is practical and markedly improves the efficiency of SMGT.
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Affiliation(s)
- Wenlin Zhou
- Sericulture Research Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
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