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PCS-1 Development of Mouse Parthenogenetic Embryos in Phosphate Free Medium Vista Budiariati; Dwi Budiono; Mokhamad Fahrudin; Berry Juliandi; Ratih Rinendyaputri; Arief Boediono
Hemera Zoa Proceedings of the 20th FAVA & the 15th KIVNAS PDHI 2018
Publisher : Hemera Zoa

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Abstract

Parthenogenesis is an artificial oocytes activation process without paternal contribution so that embryos will develop without fertilization [3]. The process of parthenogenesis as a reproductive strategy occurs in species of insect, pisces, or amphibian, which not require any implantation. Naturally, parthenogenesis is not common in mammals, but by understanding cellular mechanism during fertilization, it is possible to artificially activate mammalian oocytes.Blastocyst, derived from parthenogenesis, can be used for developmental study, embryo reconstruction, and one of potential source for pluripotent stem cells. Unfortunately, previous studies reported that parthenogenetic embryo did not achieve exhilarating blastocyst rate.One of the component that has been predicted to inhibit parthenogenetic embryo development is phosphate. Haraguchi et al. (1996)    reported that phosphate caused a negative effect on in vitro culture of AKR/N mice fertilized embryos, removal of phosphate elements was significantly improved the blastocyst rate up to 42.6% [1]. The effects of phosphate also became an interesting finding in the study that reported mouse fertilized embryos could well developed in modified medium rat 1 cell embryo medium (MR1ECM) which not contained any phosphate [2].The effect of phosphate on in vitro culture of mouse parthenogenetic embryo has not been clear. The aim of this research was to analyze inhibitory effect caused by phosphate in the medium and compare the development pattern between parthenogenetic and fertilized embryos in order to reach optimal production of parthenogenetic blastocyst for further purposes.  
Simple method to isolation and culture of neuron progenitor cells (NPCs) from whole brain post-natal rat Masagus Zainuri; Ratih Rinendyaputri; Ariyani Noviantari; Ni Ketut Susilarini
Health Science Journal of Indonesia Vol 9 No 2 (2018)
Publisher : Sekretariat Badan Penelitian dan Pengembangan Kesehatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22435/hsji.v9i2.644

Abstract

Latar Belakang: Neurobiologi dipelajari menggunakan sel neuron dari kultur primer atau menggunakancell line tergantung pada tujuan penelitian yang akan dilakukan. Berbagai metode dikembangkan untukmendapatkan sel neuron pada bagian korteks, hipokampus atau dari semua jaringan otak dari otak fetusatau tikus yang baru lahir. Sel neuron tidak mampu berproliferasi sehingga perlu dikembangkan isolasineuron progenitor cells (NPCs). Penelitian ini bertujuan untuk mengembangkan metode isolasi NPCs darijaringan utuh otak tikus yang baru lahir secara mudah dan praktis. Metode: Jaringan otak diperoleh dari tikus Sprague Dawley umur 2 hari. Eksperimen dilakukan dalam duatahap yaitu memasukkan jaringan otak dalam tripsin 0,05% diinkubasi selama 10 menit, menambahkanmedium kultur, disaring dengan pori membran dan sentrifugasi selama 10 menit. Tahap selanjutnya membuang supernatan, tambahkan dengan HBSS-glukosa, dimasukkan ke dalam larutan Ficoll 35% dan 65% kemudian sentrifugasi, selanjutnya supernatan ditanam di cawan kemudian dipindahkan lagi pada cawan yang telah dilapisi dengan poly-D-lysine. Karakterisasi dilakukan dengan imunositokimia penanda neuron (NeuN danmicrotubule-associated protein 2-MAP2) dan flow cytometry (PSANCAM+ and A2B5-). Hasil: Dalam waktu kurang dari satu jam dengan menggunakan metode ini dapat diperoleh NPCs. Hasilmenunjukkan bahwa diperoleh lebih dari 95% sel dengan PSANCAM+ dan A2B5-. Setelah dikultur selama4 hari, sel positif terhadap NeuN and MAP2. Kesimpulan: Telah berhasil dikembangkan metode isolasi NPCs dari jaringan utuh otak tikus baru lahiryang mudah dan praktis dengan viabilitas dan kemurnian tinggi. (Health Science Journal of Indonesia2018;9(2):63- 9) Kata kunci: tikus baru lahir, neuron progenitor cells (NPCs), isolasi Abstract Background: Neurobiology is studied by neuron cells from primary cultures or cell lines dependingon the purpose of the research. Various methods were developed to obtain neuron cells in the cortex,hippocampus or from all brain tissue from the fetal brain or newborn mice. Neuron cells are unable toproliferate therefore the isolation of neuron progenitor cells (NPCs) needs to be developed. This studyaims to develop a method of isolating NPCs from intact tissue of newborn mouse brains easily and practically. Methods: Brain tissue was obtained from Sprague Dawley rats aged 2 days. Experiments were carried out in two stages which included add trypsin 0,05% to brain tissue and then incubated for 10 minutes, adding culture medium, then filtered with pore size membrane and centrifuging for 10 minutes. The next step is to remove the supernatant then add with HBSS-glucose, put it in a 35% and 65% Ficoll solution and centrifugation, then the supernatant is planted in dish and then transferred again to the dish with poly-D-lysine cup. Characterization of neuron marker was carried out by immunocytochemistry (NeuN and microtubule-associated protein 2-MAP2) and flow cytometry (PSANCAM + and A2B5-). Results: In this study, our result show that this method does not take longer than one hours and more than95% cells that obtained are expressing PSANCAM+ and A2B5-. After 4 days culture, cells exhibit positivefor neuron marker as MAP2 and NeuN. Conclusion: Successfully developed the easy and practical method to isolate NPCs from the whole brainof post-natal rat with high viability and purity. (Health Science Journal of Indonesia 2018;9(2):63-9) Keyword: post-natal rat, neuron progenitor cells (NPCs), isolation
Efek dimethyl sulfoxide (DMSO) terhadap Karakteristik Sel Punca Limbal (SPL) Tikus Ratih Rinendyaputri; Frans Dany; Uly Alfi Nikmah - Pusat Biomedis dan Teknologi Dasar Kesehatan Balitbangkes, Kemenkes RI
Indonesian Journal on Medical Science Vol 5 No 1 (2018): IJMS 2018
Publisher : Unit Penelitian dan Pengabdian Masyarakat Politeknik Kesehatan Bhakti Mulial

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Abstract

Abstact : The number of donor limbal stem cells (LSCs) is limited despite their large demand for management of LSC deficiency-related corneal opacity, requiring propagation of these cells in vitro. Production of LSCs can be done through isolation and culture of limbal tissue in vitro and cryopreservation of LSCs is utilized to maintain the availability of LSCs. Upon cryopreservation, cryoprotectants are required to protect cells from thermal injury. Dimethyl sulfoxide (DMSO) is a commonly used cryoprotectant for cryopreservation but the effect of its use on LSCs are still seldomly reported. This study aimed to determine the effect of the use of DMSO in cryopreservation of LSC. The study was conducted at the Stem Cell Laboratory, Center for Biomedical and Basic Technology of Health, NIHRD Ministry of Health. This research was performed by culturing and observation of  LSCs characteristic after cryopreservation. Meanwhile, level of LSC proliferation was determined by calculating population doubling (PD) and population doubling time (PDT) besides analyzing their gene expression using markers such as CD90 (Thy1) and Krt12. The results showed that PD and PDT in LSC control and post-cryopreservation without DMSO and cryopreservation using DMSO accordingly are 1.33 and 143.03, 150.65 and 1.15, and 1.31 and 155. Meanwhile, CD90 (Thy1) gene expression and Krt12 expression in the cryopreserved group with and without DMSO compared with their respective controls are 2.7 and 4.51, 2.55 and 1:44, respectively. In this study, DMSO for the cryopreservation did not affect at the LSC characteristics of rat.Key word : limbus stem cell, LSC, cryopreservation, dimethyl sulfoxide, DMSO Abstrak : Jumlah donor sel punca limbal (SPL) sangat terbatas padahal kebutuhannya cukup besar untuk penatalaksanaan kekeruhan kornea akibat defisiensi sel tersebut sehingga SPL perlu diperbanyak secara in vitro. Produksi SPL secara in vitro dapat dilakukan dengan melakukan isolasi dan kultur dari jaringan limbal, dan metode simpan beku atau kriopreservasi SPL digunakan untuk menjaga ketersediaan SPL. Pada saat kriopreservasi, dibutuhkan krioprotektan yang dapat melindungi sel dari kerusakan termal saat kriopreservasi. Dimethyl sulfoxide (DMSO) merupakan salah satu krioprotektan yang umum digunakan untuk kriopreservasi namun efek penggunaan pada SPL masih sangat jarang dilaporkan. Penelitian ini bertujuan untuk mengetahui efek penggunaan DMSO pada kriopreservasi SPL. Penelitian dilakukan di Laboratorium Stem Cell Pusat Biomedis dan Teknologi Dasar Kesehatan Badan Litbangkes. Penelitian ini dilakukan dengan melakukan kultur SPL tikus menggunakan metode eksplan secara in vitro pada cawan petri. Pengamatan terhadap karakteristik SPL pasca kriopreservasi dilakukan dengan pengamatan terhadap morfologi SPL secara mikroskopis dan mengetahui tingkat proliferasi SPL dengan menghitung population doubling (PD) dan population doubling time (PDT) serta menganalisis ekspresi gen CD90 (Thy1) dan Krt12 sebagai marker SPL. Hasil penelitian menunjukkan bahwa PD dan PDT pada SPL kontrol dan pasca kriopreservasi tanpa DMSO dan kriopreservasi dengan DMSO secara berturut-turut adalah 1.33 dan 143.03, 1.15 dan 150.65 serta 1.31 dan 155. Sedangkan tingkat ekspresi gen CD90 (Thy1) dan Krt12 SPL pada penggunaan dan tanpa DMSO dibandingkan dengan kontrol masing-masing adalah 2,7 dan 4,51 serat 2,55 dan 1,44 kali. Pada penelitian ini, DMSO tidak  mengubah  karakteristik SPL tikus. Kata kunci: sel punca limbal, SPL, kriopreservasi, dimethyl sulfoxide, DMSO