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Article ; Online: Effects of co-culture of cumulus oocyte complexes with denuded oocytes during in vitro maturation on the developmental competence of cloned bovine embryos.

Ha, A-N / Fakruzzaman, M / Lee, K-L / Bang, J-I / Deb, G-K / Wang, Z / Kong, I-K

Reproduction in domestic animals = Zuchthygiene

2015 Volume 50, Issue 2, Page(s) 292–298

Abstract: This study evaluated the effects of co-culture of immature cumulus oocyte complexes (COCs) with denuded immature oocytes (DO) during in vitro maturation on the developmental competence and quality of cloned bovine embryos. We demonstrated that ... ...

Abstract	This study evaluated the effects of co-culture of immature cumulus oocyte complexes (COCs) with denuded immature oocytes (DO) during in vitro maturation on the developmental competence and quality of cloned bovine embryos. We demonstrated that developmental competence, judged by the blastocyst formation rate, was significantly higher in the co-cultured somatic cell nuclear transfer (SCNT+DO, 37.1 ± 1.1%) group than that in the non-co-cultured somatic cell nuclear transfer (SCNT-DO, 25.1 ± 0.9%) group and was very similar to that in the control IVF (IVF, 38.8 ± 2.8%) group. Moreover, the total cell number per blastocyst in the SCNT+DO group (101.7 ± 6.2) was higher than that in the SCNT-DO group (81.7 ± 4.3), while still less than that in the IVF group (133.3 ± 6.0). Furthermore, our data showed that mRNA levels of the methylation-related genes DNMT1 and DNMT3a in the SCNT+DO group were similar to that in the IVF group, while they were significantly higher in the SCNT-DO group. Similarly, while the mRNA levels of the deacetylation-related genes HDAC2 and HDAC3 were significantly higher in the SCNT-DO group, they were comparable between the IVF and SCNT+DO groups. However, the mRNA levels of HDAC1 and DNMT3B were significantly higher in the SCNT+DO group than in the other groups. In conclusion, the present study demonstrated that co-culture of COCs with DO improves the in vitro developmental competence and quality of cloned embryos, as evidenced by increased total cell number.
MeSH term(s)	Animals ; Cattle/embryology ; Cloning, Organism ; Coculture Techniques/methods ; Coculture Techniques/veterinary ; Cumulus Cells/cytology ; Cumulus Cells/physiology ; Embryo, Mammalian/cytology ; Embryo, Mammalian/physiology ; Embryonic Development/physiology ; Gene Expression Regulation, Developmental/physiology ; In Vitro Oocyte Maturation Techniques/methods ; In Vitro Oocyte Maturation Techniques/veterinary ; Oocytes/cytology ; Oocytes/physiology
Language	English
Publishing date	2015-04
Publishing country	Germany
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	1015187-4
ISSN	1439-0531 ; 0936-6768
ISSN (online)	1439-0531
ISSN	0936-6768
DOI	10.1111/rda.12487
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Coculturing denuded oocytes during the in vitro maturation of bovine cumulus oocyte complexes exerts a synergistic effect on embryo development

Dey, S.R / Deb, G.K / Ha, A.N / Lee, J.I / Bang, J.I / Lee, K.L / Kong, I.K

Theriogenology. 2012 Apr. 1, v. 77, no. 6

2012

Abstract: The present study examined the effect of coculturing cumulus oocyte complexes (COCs) and denuded oocytes (DOs) during in vitro maturation (IVM) on nuclear and cytoplasmic maturation, zona pellucida (ZP) hardening, the pattern of fertilization and ... ...

Abstract	The present study examined the effect of coculturing cumulus oocyte complexes (COCs) and denuded oocytes (DOs) during in vitro maturation (IVM) on nuclear and cytoplasmic maturation, zona pellucida (ZP) hardening, the pattern of fertilization and glutathione peroxidase 1 (GPX1) gene expression in the oocyte. Furthermore, the rate of embryonic development and the quality of blastocysts were examined for both COCs and DOs. Three IVM conditions were studied: 1) the coculture of 12 COCs and 60 DOs, 2) COC control with 12 COCs, and 3) DO control with 60 DOs. The IVM was performed in a 120-μl droplet of TCM199-based IVM medium. Following IVM, in vitro fertilization (IVF) and in vitro culture (IVC) were conducted separately for the COCs and DOs (DO coculture) from the IVM coculture group. Coculturing COCs and DOs increased the percentage of oocytes reaching the blastocyst stage and the total number of cells per blastocyst in both the COC coculture (44.4 ± 8.6 vs 26.7 ± 9.7%, P < 0.01, and 137.9 ± 24.9 vs 121.7 ± 21.1, P < 0.05) and the DO coculture (20.5 ± 5.0 vs 11.1 ± 2.5%, P < 0.01, and 121.9 ± 27.5 vs 112.3 ± 33.2, P < 0.05) compared to their respective control groups. The synergistic effects of coculturing were detected as increased nuclear and cytoplasmic maturation, the prevention of ZP hardening, increased monospermic fertilization and increased expression of GPX1 in the oocytes in response to endogenous oocyte-secreted factors. In conclusion, coculturing COCs and DOs may be an effective culture system for both intact COCs and immature DOs.
Keywords	cattle ; coculture ; embryogenesis ; gene expression ; glutathione peroxidase ; in vitro fertilization ; oocytes ; synergism ; zona pellucida
Language	English
Dates of publication	2012-0401
Size	p. 1064-1077.
Publishing place	Elsevier Inc.
Document type	Article
ZDB-ID	189232-0
ISSN	1879-3231 ; 0093-691X
ISSN (online)	1879-3231
ISSN	0093-691X
DOI	10.1016/j.theriogenology.2011.10.009
Database	NAL-Catalogue (AGRICOLA)

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Article: Effect of Semen Collection Methods on the Post-thaw Viability of Cat Semen

Ha, A.N., Gyeongsang National University, Jinju, Republic of Korea / Yoon, J.H., Gyeongsang National University, Jinju, Republic of Korea / Kim, Y.G., Gyeongsang National University, Jinju, Republic of Korea / Jo, A.R., Gyeongsang National University, Jinju, Republic of Korea / Lee, K.R., Gyeongsang National University, Jinju, Republic of Korea / Kong, I.K., Gyeongsang National University, Jinju, Republic of Korea

Reproductive and Developmental Biology

(Mar 2011) Volume v. 35, Issue (1), Page(s) p. 55–60

Abstract: The objective of this study was carried out to evaluate the efficiency of sperm collection methods on the post-thaw viability of cat semen. The cat semen was collected by artificial virginal (AV) and electronic ejaculate (EE) methods. The composition of ... ...

Abstract	The objective of this study was carried out to evaluate the efficiency of sperm collection methods on the post-thaw viability of cat semen. The cat semen was collected by artificial virginal (AV) and electronic ejaculate (EE) methods. The composition of semen extender was consisted of Tris-buffer supplemented with 20% egg yolk and 1% P/S antibiotics in Ext Ⅰ, and more added 8% glycerol, 1.0% Equex STM paste of total volume in Ext Ⅱ. The collected semen was adjusted the concentration and then diluted in Ext Ⅰ for optimal concentration. The diluted semen was cooling to 5℃ temperature in refrigerator for at least 2 hrs and then diluted stepwise with Ext Ⅱ for at least 1 hrs. After an equilibration for 1 hrs, the cooled semen was packaged in 0.5 ml straw and then freezing on the LN₂ vapor over 5 cm above from LN₂ and then immersed directly in LN₂ for cryopreservation. The frozen semen was thawed in 38℃ water for 15 sec and then evaluated the motility, viability, and morphology. Post-thaw semen were calculated the motility by SMI (sperm motility index). The live-dead sperm was evaluated by Eosin-B and morphological evaluation was by Diff-quik kit staining. The post-thaw concentration (89×10∨6 /ml vs. 128×10∨6 /ml), viability (22.6±10.6% vs. 37.1±26.1%), morphological normality (27.0±50.2% vs. 45.6±123.0%) of EE and AV groups were not significant different, but the post-thaw motility was significant lower in EE than that in AV group (53.1±3.6 vs. 73.6±5.7) (p less than 0.05). In conclusion, semen collection methods did not significant different between EE and AV groups except of post-thaw motility and so both semen collection methods could be applied in feline semen collection methods.
Keywords	CATS ; SEMEN ; FREEZING ; BIOLOGICAL PRESERVATION ; CHAT ; SPERME ; CONGELATION ; CONSERVATION BIOLOGIQUE ; GATO ; SEMEN ; CONGELACION ; CONSERVACION BIOLOGICA
Language	Korean
Document type	Article
ISSN	1738-2432
Database	AGRIS - International Information System for the Agricultural Sciences and Technology

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Article: Development of New Vitrification Method for Preimplantation Mouse Embryo

Ha, A.N., Gyeongsang National University, Jinju, Republic of Korea / Fakruzzaman, M., Gyeongsang National University, Jinju, Republic of Korea / Lee, K.L., Gyeongsang National University, Jinju, Republic of Korea / Wang, E., Gyeongsang National University, Jinju, Republic of Korea / Lee, J.I., Gyeongsang National University, Jinju, Republic of Korea / Min, C.S., Gyeongsangnamdo Agricultural Research and Extension Services, jinju, Republic of Korea / Kong, I.K., Institute of Agricultural and Life Science, Jinju, Republic of Korea

Journal of Embryo Transfer

(Jun 2013) Volume v. 28, Issue (2), Page(s) p. 141–147

Abstract: The purpose of this study was attempted to new methods in mammalian embryos vitrification. This method was affected to increase of the embryo vitrification efficiency and it would be applied to the field of embryo transfer to recipient by modified ... ...

Abstract	The purpose of this study was attempted to new methods in mammalian embryos vitrification. This method was affected to increase of the embryo vitrification efficiency and it would be applied to the field of embryo transfer to recipient by modified loading method of embryo into 0.25 ml plastic straw. The frozen mouse embryos were carried out warmed from two different cell stages (8-cell and blastocyst, respectively) by attachment of an embryo in the vitrification straw (aV) method. All groups were cultured in M-16 medium to determine the development and survivability for 24 h, respectively. Results shown that, the survivability of two different groups were significantly different (94.8% vs. 70.9%). Total cell number was not significantly different the non-frozen blastocyst (99.7 ± 12.4) compared to the post-thaw blastocyst (94.8 ± 15.1). From the 8-cell embryo, total cell number of frozen blastocysts were significantly lower than others groups (74.7 ± 14.6, p0.05). In the case of cell death analysis, the blastocysts from non-frozen and frozen-thawed 8-cell group were not different (0.0 ± 0.0 vs. 1.9 ± 3.1, p0.05). However, the apoptotic nuclei of blastocyst were significantly observed the frozen-thawed group (5.4 ± 4.4) compared to non-frozen group (p0.05). Therefore, this new method of embryos using in-straw dilution and direct transfer into other species would be more simple procedure of embryo transfer rather than step-wise dilution method and cryopreservation vessels, so we can be applied in animal as well as human embryo cryopreservation in further.
Keywords	VITRIFICATION ; VITRIFICACION
Language	English
Document type	Article
ISSN	1225-4991
Database	AGRIS - International Information System for the Agricultural Sciences and Technology

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Article: Effect of the Artificial Shrinkage on the Development of the Vitrified Bovine Embryos

Ha, A.N., Gyeongsang National University, Jinju, Republic of Korea / Cho, S.J., Gyeongsang National University, Jinju, Republic of Korea / Deb, Gautam-Kumar, Gyeongsang National University, Jinju, Republic of Korea / Bang, J.I., Gyeongsang National University, Jinju, Republic of Korea / Kwon, T.H., Gyeongsang National University, Jinju, Republic of Korea / Choi, B.H., Gyeongsang National University, Jinju, Republic of Korea / Kong, I.K., Gyeongsang National University, Jinju, Republic of Korea

Journal of Embryo Transfer

(Mar 2010) Volume v. 25, Issue (1), Page(s) p. 9–14

Abstract: This study was conducted to find out the effects of artificial shrinkage (AS) on post-thaw development of bovine embryos. The blastocoelic cavity of blastocyst was punctured to remove its fluid contents and then incubated in the holding medium (HM) for ... ...

Abstract	This study was conducted to find out the effects of artificial shrinkage (AS) on post-thaw development of bovine embryos. The blastocoelic cavity of blastocyst was punctured to remove its fluid contents and then incubated in the holding medium (HM) for 10 min. The punctured and non-punctured (control) blastocysts were equilibrated in vitrification solution 1 (VS1; TCM-199+20% FBS+10% EG) for 5 min and vitrification solution 2 (VS2; TCM199+20% FBS+35% EG+5% PVP+0.5 M Sucrose) for 1 min and vitrified by direct dropping into the liquid nitrogen. Vitrified blastocysts (punctured and control) were thawed and cultured in vitro (12 hr) for studying survival and hatching rates. The levels of shrinkage were measured by the volume of the blastocyst during equilibration in VS1 (at 1, 3 and 5 min of equilibration) and VS2 (at 30 and 60 sec of equilibration) that was considering the volume of non-punctured blastocyst in HM as 100%. The levels of shrinkage were higher in punctured group (62.4, 64.6, 64.3% at 1, 3 and 5 min in VS1; 50.6 and 52.7% at 30 and 60 sec in VS2) than control group (84.8, 86.6, 86.4% at 1, 3 and 5 min in VS1; 72.1 and 68.8% at 30 and 60 sec in VS2), but within each group the levels of shrinkage were similar. The survival (90.9%) and hatching (50.0%) rates of vitrified blastocysts at 12 hr post-thaw were higher in punctured group than that in control group (76.9% and 0.0% respectively). We confirmed that vitrification solutions (VS1 and VS2) have no toxic effect on the survival of blastocysts because the survival rates of blastocysts exposed to VS1 and VS2 for 24 hr were similar between punctured and control groups (94.3 vs. 96.0%; p greater than 0.05). In conclusion, the preliminary data show that AS of blastocyst may improve survival and hatching rate after thawing.
Keywords	VITRIFICATION ; BOVINAE ; ANIMAL EMBRYOS ; VITRIFICATION ; BOVINAE ; EMBRYON ANIMAL ; VITRIFICACION ; BOVINA ; EMBRIONES ANIMALES
Language	English
Document type	Article
ISSN	1225-4991
Database	AGRIS - International Information System for the Agricultural Sciences and Technology

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Article: Possible Application of Artificial Insemination Buffer for Increasing Production Efficiency of Female Cow Offspring

Journal of Embryo Transfer

(Dec 2011) Volume v. 26, Issue (4), Page(s) p. 277–282

Abstract: The present research was carried out to evaluate the possibility of increasing female offspring production ratios using artificial insemination buffer (AIB) before artificial insemination (AI). In this experiment, we optimized AIB composition, made an ... ...

Abstract	The present research was carried out to evaluate the possibility of increasing female offspring production ratios using artificial insemination buffer (AIB) before artificial insemination (AI). In this experiment, we optimized AIB composition, made an AIB gun and analyze factors affecting AI non-return rate after AIB treatment. The AIB was made with the base of Tris-buffer supplemented with L-arginine and several other chemicals that might reduce the motility of male sperm compared to the female counterpart, therefore, increasing the possibility of fertilization by female sperm. AIB must be deposited into 2∨nd to 4∨th cervix by AIB gun. After 15 min of AIB deposition, frozen semen was deposited into the same place. A total of 348 cattle were inseminated with AIB insemination, and there were no significant differences between AIB and traditional AI non-return rates (56.8% vs. 55.7%). The AI non-return rate in AIB group, however, differed significantly among 7 Hanwoo farms. The parturition numbers (1∨st to 7∨th) of cows did not affect AIB AI rate. The proportion of AIB AI success rates was significantly higher in Hanwoo cows than in dairy cows (61.0% vs. 48.7%), but the average AI success rate did not differ significantly between AIB and conventional AI (56.8% vs. 55.7%). The female offspring production rate in 2∨nd to 4∨th cervix deposition place was significantly higher than that in the uterus body (77.7% vs. 59.6%, p less than 0.05). The injection volume of AIB in 5 and 10 ml was significantly higher than that in 2 ml (77.7%, 78.7% vs. 51.8%, p less than 0.05), but there were no differences in AIB injection volume between 5 and 10 ml. The best exposure time of AIB in the cervix was 10 to 15 min rather than 5 min (79.2%, 77.2% vs. 52.6%, p less than 0.05). AIB therefore needs to have an exposure time of at least over 10 min for a higher production rate of female offspring. In conclusion, AIB could be used in AI industry to increase the female offspring ratio and AIB AI can increase the AI success rate.
Keywords	ARTIFICIAL INSEMINATION ; COWS ; FEMALES ; INSEMINATION ARTIFICIELLE ; VACHE ; FEMELLE ; INSEMINACION ARTIFICIAL ; VACA ; HEMBRA
Language	English
Document type	Article
ISSN	1225-4991
Database	AGRIS - International Information System for the Agricultural Sciences and Technology

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Article: Establishment of Cryopreservation of Leopard Cat Semen Collected by Electro-ejaculation Method

Journal of Embryo Transfer

(Dec 2011) Volume v. 26, Issue (4), Page(s) p. 245–250

Abstract: The aim of this study was to evaluate the post-thawed characteristics of leopard cat semen. In this experiment, semen was collected from two leopard cats (A and B) at wild animal center in Seoul Grand Park in Korea. After collection, the sperms were ... ...

Abstract	The aim of this study was to evaluate the post-thawed characteristics of leopard cat semen. In this experiment, semen was collected from two leopard cats (A and B) at wild animal center in Seoul Grand Park in Korea. After collection, the sperms were washed with D-PBS and diluted by the freezing medium (Irvine science, USA) and stored in liquid nitrogen. The post-thawed concentration was 357×10∨6 sperms/ml for A and 97×10∨6 sperms/ml for B. The viability of post-thawed sperm from A and B individual was 24.0% and 19.0%, respectively. Pre-freezing motility of A and B individual semen was 68.54% and 56.65. Leopard cat A had more normal sperm than that of B (69.5% vs. 54.5%). Acrosome integrity analysis detected live (14.5% vs. 9.0%), damage (39.0% vs. 44.0%) and dead (46.0% vs. 47.0%) in leopard cat A and B, respectively. The present results concluded that leopard cat semen can be collected successfully by electro-ejaculation method and cryopreserved successfullyfor future use in different assisted reproductive technologies. The cryopreservation protocol needs to be modified for increasing post-thawed viability of leopard cat spermatozoa.
Keywords	SEMEN ; FREEZING ; BIOLOGICAL PRESERVATION ; SPERME ; CONGELATION ; CONSERVATION BIOLOGIQUE ; SEMEN ; CONGELACION ; CONSERVACION BIOLOGICA
Language	English
Document type	Article
ISSN	1225-4991
Database	AGRIS - International Information System for the Agricultural Sciences and Technology

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Article ; Online: A functional genomics screen identifying blood cell development genes in Drosophila by undergraduates participating in a course-based research experience.

Evans, Cory J / Olson, John M / Mondal, Bama Charan / Kandimalla, Pratyush / Abbasi, Ariano / Abdusamad, Mai M / Acosta, Osvaldo / Ainsworth, Julia A / Akram, Haris M / Albert, Ralph B / Alegria-Leal, Elitzander / Alexander, Kai Y / Ayala, Angelica C / Balashova, Nataliya S / Barber, Rebecca M / Bassi, Harmanjit / Bennion, Sean P / Beyder, Miriam / Bhatt, Kush V /

Bhoot, Chinmay / Bradshaw, Aaron W / Brannigan, Tierney G / Cao, Boyu / Cashell, Yancey Y / Chai, Timothy / Chan, Alex W / Chan, Carissa / Chang, Inho / Chang, Jonathan / Chang, Michael T / Chang, Patrick W / Chang, Stephen / Chari, Neel / Chassiakos, Alexander J / Chen, Iris E / Chen, Vivian K / Chen, Zheying / Cheng, Marsha R / Chiang, Mimi / Chiu, Vivian / Choi, Sharon / Chung, Jun Ho / Contreras, Liset / Corona, Edgar / Cruz, Courtney J / Cruz, Renae L / Dang, Jefferson M / Dasari, Suhas P / De La Fuente, Justin R O / Del Rio, Oscar M A / Dennis, Emily R / Dertsakyan, Petros S / Dey, Ipsita / Distler, Rachel S / Dong, Zhiqiao / Dorman, Leah C / Douglass, Mark A / Ehresman, Allysen B / Fu, Ivy H / Fua, Andrea / Full, Sean M / Ghaffari-Rafi, Arash / Ghani, Asmar Abdul / Giap, Bosco / Gill, Sonia / Gill, Zafar S / Gills, Nicholas J / Godavarthi, Sindhuja / Golnazarian, Talin / Goyal, Raghav / Gray, Ricardo / Grunfeld, Alexander M / Gu, Kelly M / Gutierrez, Natalia C / Ha, An N / Hamid, Iman / Hanson, Ashley / Hao, Celesti / He, Chongbin / He, Mengshi / Hedtke, Joshua P / Hernandez, Ysrael K / Hlaing, Hnin / Hobby, Faith A / Hoi, Karen / Hope, Ashley C / Hosseinian, Sahra M / Hsu, Alice / Hsueh, Jennifer / Hu, Eileen / Hu, Spencer S / Huang, Stephanie / Huang, Wilson / Huynh, Melanie / Javier, Carmen / Jeon, Na Eun / Ji, Sunjong / Johal, Jasmin / John, Amala / Johnson, Lauren / Kadakia, Saurin / Kakade, Namrata / Kamel, Sarah / Kaur, Ravinder / Khatra, Jagteshwar S / Kho, Jeffrey A / Kim, Caleb / Kim, Emily Jin-Kyung / Kim, Hee Jong / Kim, Hyun Wook / Kim, Jin Hee / Kim, Seong Ah / Kim, Woo Kyeom / Kit, Brian / La, Cindy / Lai, Jonathan / Lam, Vivian / Le, Nguyen Khoi / Lee, Chi Ju / Lee, Dana / Lee, Dong Yeon / Lee, James / Lee, Jason / Lee, Jessica / Lee, Ju-Yeon / Lee, Sharon / Lee, Terrence C / Lee, Victoria / Li, Amber J / Li, Jialing / Libro, Alexandra M / Lien, Irvin C / Lim, Mia / Lin, Jeffrey M / Liu, Connie Y / Liu, Steven C / Louie, Irene / Lu, Shijia W / Luo, William Y / Luu, Tiffany / Madrigal, Josef T / Mai, Yishan / Miya, Darron I / Mohammadi, Mina / Mohanta, Sayonika / Mokwena, Tebogo / Montoya, Tonatiuh / Mould, Dallas L / Murata, Mark R / Muthaiya, Janani / Naicker, Seethim / Neebe, Mallory R / Ngo, Amy / Ngo, Duy Q / Ngo, Jamie A / Nguyen, Anh T / Nguyen, Huy C X / Nguyen, Rina H / Nguyen, Thao T T / Nguyen, Vincent T / Nishida, Kevin / Oh, Seo-Kyung / Omi, Kristen M / Onglatco, Mary C / Almazan, Guadalupe Ortega / Paguntalan, Jahzeel / Panchal, Maharshi / Pang, Stephanie / Parikh, Harin B / Patel, Purvi D / Patel, Trisha H / Petersen, Julia E / Pham, Steven / Phan-Everson, Tien M / Pokhriyal, Megha / Popovich, Davis W / Quaal, Adam T / Querubin, Karl / Resendiz, Anabel / Riabkova, Nadezhda / Rong, Fred / Salarkia, Sarah / Sama, Nateli / Sang, Elaine / Sanville, David A / Schoen, Emily R / Shen, Zhouyang / Siangchin, Ken / Sibal, Gabrielle / Sin, Garuem / Sjarif, Jasmine / Smith, Christopher J / Soeboer, Annisa N / Sosa, Cristian / Spitters, Derek / Stender, Bryan / Su, Chloe C / Summapund, Jenny / Sun, Beatrice J / Sutanto, Christine / Tan, Jaime S / Tan, Nguon L / Tangmatitam, Parich / Trac, Cindy K / Tran, Conny / Tran, Daniel / Tran, Duy / Tran, Vina / Truong, Patrick A / Tsai, Brandon L / Tsai, Pei-Hua / Tsui, C Kimberly / Uriu, Jackson K / Venkatesh, Sanan / Vo, Maique / Vo, Nhat-Thi / Vo, Phuong / Voros, Timothy C / Wan, Yuan / Wang, Eric / Wang, Jeffrey / Wang, Michael K / Wang, Yuxuan / Wei, Siman / Wilson, Matthew N / Wong, Daniel / Wu, Elliott / Xing, Hanning / Xu, Jason P / Yaftaly, Sahar / Yan, Kimberly / Yang, Evan / Yang, Rebecca / Yao, Tony / Yeo, Patricia / Yip, Vivian / Yogi, Puja / Young, Gloria Chin / Yung, Maggie M / Zai, Alexander / Zhang, Christine / Zhang, Xiao X / Zhao, Zijun / Zhou, Raymond / Zhou, Ziqi / Abutouk, Mona / Aguirre, Brian / Ao, Chon / Baranoff, Alexis / Beniwal, Angad / Cai, Zijie / Chan, Ryan / Chien, Kenneth Chang / Chaudhary, Umar / Chin, Patrick / Chowdhury, Praptee / Dalie, Jamlah / Du, Eric Y / Estrada, Alec / Feng, Erwin / Ghaly, Monica / Graf, Rose / Hernandez, Eduardo / Herrera, Kevin / Ho, Vivien W / Honeychurch, Kaitlyn / Hou, Yurianna / Huang, Jo M / Ishii, Momoko / James, Nicholas / Jang, Gah-Eun / Jin, Daphne / Juarez, Jesse / Kesaf, Ayse Elif / Khalsa, Sat Kartar / Kim, Hannah / Kovsky, Jenna / Kuang, Chak Lon / Kumar, Shraddha / Lam, Gloria / Lee, Ceejay / Lee, Grace / Li, Li / Lin, Joshua / Liu, Josephine / Ly, Janice / Ma, Austin / Markovic, Hannah / Medina, Cristian / Mungcal, Jonelle / Naranbaatar, Bilguudei / Patel, Kayla / Petersen, Lauren / Phan, Amanda / Phung, Malcolm / Priasti, Nadiyah / Ruano, Nancy / Salim, Tanveer / Schnell, Kristen / Shah, Paras / Shen, Jinhua / Stutzman, Nathan / Sukhina, Alisa / Tian, Rayna / Vega-Loza, Andrea / Wang, Joyce / Wang, Jun / Watanabe, Rina / Wei, Brandon / Xie, Lillian / Ye, Jessica / Zhao, Jeffrey / Zimmerman, Jill / Bracken, Colton / Capili, Jason / Char, Andrew / Chen, Michel / Huang, Pingdi / Ji, Sena / Kim, Emily / Kim, Kenneth / Ko, Julie / Laput, Sean Louise G / Law, Sam / Lee, Sang Kuk / Lee, Olivia / Lim, David / Lin, Eric / Marik, Kyle / Mytych, Josh / O'Laughlin, Andie / Pak, Jensen / Park, Claire / Ryu, Ruth / Shinde, Ashwin / Sosa, Manny / Waite, Nick / Williams, Mane / Wong, Richard / Woo, Jocelyn / Woo, Jonathan / Yepuri, Vishaal / Yim, Dorothy / Huynh, Dan / Wijiewarnasurya, Dinali / Shapiro, Casey / Levis-Fitzgerald, Marc / Jaworski, Leslie / Lopatto, David / Clark, Ira E / Johnson, Tracy / Banerjee, Utpal

G3 (Bethesda, Md.)

2021 Volume 11, Issue 1

Abstract: Undergraduate students participating in the UCLA Undergraduate Research Consortium for Functional Genomics (URCFG) have conducted a two-phased screen using RNA interference (RNAi) in combination with fluorescent reporter proteins to identify genes ... ...

Abstract	Undergraduate students participating in the UCLA Undergraduate Research Consortium for Functional Genomics (URCFG) have conducted a two-phased screen using RNA interference (RNAi) in combination with fluorescent reporter proteins to identify genes important for hematopoiesis in Drosophila. This screen disrupted the function of approximately 3500 genes and identified 137 candidate genes for which loss of function leads to observable changes in the hematopoietic development. Targeting RNAi to maturing, progenitor, and regulatory cell types identified key subsets that either limit or promote blood cell maturation. Bioinformatic analysis reveals gene enrichment in several previously uncharacterized areas, including RNA processing and export and vesicular trafficking. Lastly, the participation of students in this course-based undergraduate research experience (CURE) correlated with increased learning gains across several areas, as well as increased STEM retention, indicating that authentic, student-driven research in the form of a CURE represents an impactful and enriching pedagogical approach.
MeSH term(s)	Animals ; Blood Cells ; Drosophila/genetics ; Genomics/education ; Humans ; Students ; Universities
Language	English
Publishing date	2021-02-12
Publishing country	England
Document type	Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
ZDB-ID	2629978-1
ISSN	2160-1836 ; 2160-1836
ISSN (online)	2160-1836
ISSN	2160-1836
DOI	10.1093/g3journal/jkaa028
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Article: Coculturing denuded oocytes during the in vitro maturation of bovine cumulus oocyte complexes exerts a synergistic effect on embryo development

Dey, S.R. / Deb, G.K. / Ha, A.N. / Lee, J.I. / Bang, J.I. / Lee, K.L. / Kong, I.K.

Theriogenology

Volume v. 77,, Issue no. 6

Abstract	The present study examined the effect of coculturing cumulus oocyte complexes (COCs) and denuded oocytes (DOs) during in vitro maturation (IVM) on nuclear and cytoplasmic maturation, zona pellucida (ZP) hardening, the pattern of fertilization and glutathione peroxidase 1 (GPX1) gene expression in the oocyte. Furthermore, the rate of embryonic development and the quality of blastocysts were examined for both COCs and DOs. Three IVM conditions were studied: 1) the coculture of 12 COCs and 60 DOs, 2) COC control with 12 COCs, and 3) DO control with 60 DOs. The IVM was performed in a 120-μl droplet of TCM199-based IVM medium. Following IVM, in vitro fertilization (IVF) and in vitro culture (IVC) were conducted separately for the COCs and DOs (DO coculture) from the IVM coculture group. Coculturing COCs and DOs increased the percentage of oocytes reaching the blastocyst stage and the total number of cells per blastocyst in both the COC coculture (44.4 ± 8.6 vs 26.7 ± 9.7%, P < 0.01, and 137.9 ± 24.9 vs 121.7 ± 21.1, P < 0.05) and the DO coculture (20.5 ± 5.0 vs 11.1 ± 2.5%, P < 0.01, and 121.9 ± 27.5 vs 112.3 ± 33.2, P < 0.05) compared to their respective control groups. The synergistic effects of coculturing were detected as increased nuclear and cytoplasmic maturation, the prevention of ZP hardening, increased monospermic fertilization and increased expression of GPX1 in the oocytes in response to endogenous oocyte-secreted factors. In conclusion, coculturing COCs and DOs may be an effective culture system for both intact COCs and immature DOs.
Keywords	zona pellucida ; in vitro fertilization ; synergism ; oocytes ; gene expression ; cattle ; coculture ; glutathione peroxidase ; embryogenesis
Language	English
Document type	Article
ISSN	0093-691X
Database	AGRIS - International Information System for the Agricultural Sciences and Technology

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Article: Coculturing denuded oocytes during the in vitro maturation of bovine cumulus oocyte complexes exerts a synergistic effect on embryo development

Dey, S.R. / Deb, G.K. / Ha, A.N. / Lee, J.I. / Bang, J.I. / Lee, K.L. / Kong, I.K.

Theriogenology

Volume v. 77,, Issue no. 6

Abstract	The present study examined the effect of coculturing cumulus oocyte complexes (COCs) and denuded oocytes (DOs) during in vitro maturation (IVM) on nuclear and cytoplasmic maturation, zona pellucida (ZP) hardening, the pattern of fertilization and glutathione peroxidase 1 (GPX1) gene expression in the oocyte. Furthermore, the rate of embryonic development and the quality of blastocysts were examined for both COCs and DOs. Three IVM conditions were studied: 1) the coculture of 12 COCs and 60 DOs, 2) COC control with 12 COCs, and 3) DO control with 60 DOs. The IVM was performed in a 120-μl droplet of TCM199-based IVM medium. Following IVM, in vitro fertilization (IVF) and in vitro culture (IVC) were conducted separately for the COCs and DOs (DO coculture) from the IVM coculture group. Coculturing COCs and DOs increased the percentage of oocytes reaching the blastocyst stage and the total number of cells per blastocyst in both the COC coculture (44.4 ± 8.6 vs 26.7 ± 9.7%, P < 0.01, and 137.9 ± 24.9 vs 121.7 ± 21.1, P < 0.05) and the DO coculture (20.5 ± 5.0 vs 11.1 ± 2.5%, P < 0.01, and 121.9 ± 27.5 vs 112.3 ± 33.2, P < 0.05) compared to their respective control groups. The synergistic effects of coculturing were detected as increased nuclear and cytoplasmic maturation, the prevention of ZP hardening, increased monospermic fertilization and increased expression of GPX1 in the oocytes in response to endogenous oocyte-secreted factors. In conclusion, coculturing COCs and DOs may be an effective culture system for both intact COCs and immature DOs.
Keywords	zona pellucida ; in vitro fertilization ; synergism ; oocytes ; gene expression ; cattle ; coculture ; glutathione peroxidase ; embryogenesis
Language	English
Document type	Article
ISSN	0093-691X
Database	AGRIS - International Information System for the Agricultural Sciences and Technology

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

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