<![CDATA[Pengembangan obat terapi keganasan di Indonesia sering kali terkendala karena ketidakmampuan menyediakan hewan model untuk uji preklinis. Hewan model tersebut adalah hewan model dengan massa keganasan yang mempunyai karakteristik khusus, bukan sekedar dengan massa tumor. Pada umumnya untuk tujuan tersebut digunakan hewan model yang tidak mempunyai daya tahan tubuh dan dipelihara dalam lingkungan yang steril. Fasilitas sistem perkandangan yang steril ini yang belum ada di Indonesia. Tujuan penelitian ini mengembangkan metode penyediaan hewan model mencit pengganti nude mice dengan daya tahan tubuh yang rendah, tetapi mampu hidup dalam lingkungan fasilitas pemeliharaan yang tidak steril. Penelitian dilakukan di Laboratorium Hewan dan Laboratorium Sitogenetik Pusat Teknologi Radioisotop dan Radiofarmaka, Batan, Serpong sejak bulan Juli sampai November 2014. Galur sel SKBR-3 diinokulasi pada 2 kelompok mencit sehat (Mus musculus) strain Balb/c, yaitu kelompok perlakuan dan kontrol, masing-masing 8 ekor. Cyclosporine A, agen penurun daya tahan tubuh hanya diberikan pada kelompok perlakuan sebelum dan setelah inokulasi. Pada kedua kelompok, pertumbuhan tumor secara makroskopik tidak terlihat di tempat inokulasi, tetapi tampak perbedaan bermakna antara kelompok perlakuan dan kontrol pada kadar leukosit (p:0,01), limfosit (p:0,01), monosit (p:0,01), dan segmen neutrofil (p:0,01). Pada 2 mencit kelompok perlakuan didapatkan gambaran sel degenerasi bengkak keruh di hati. Metode ini terbukti dapat menurunkan daya tahan tubuh hewan coba mencit (Mus musculus) strain Balb/c, walaupun belum mampu menumbuhkan keganasan. [MKB. 2016;48(1):39–44]Kata kunci: Ca payudara HER2 positif, hewan coba model onkologiDesigning Animal Models for HER2 Positive Breast Cancer Using Immunosuppressive AgentAbstractThe development of therapeutic drug for malignancy in Indonesia is often constrained because of the inability to provide animal models for preclinical study. These animal models are an animal model with a malignancy mass which have special characteristics, not just the tumor mass. Animal models that are usually used for this purpose is immunodeficient animals. This animal must be kept in sterile animal care, but the facility is not readily available in Indonesia. The purpose of this study was to develop a method for providing an animal model of nude mice replacement that has fairly low immunity but are still able to live in non-sterile animal care facilities. The study was conducted at the Laboratory Animal and Cytogenetics, Center for Radioisotope and Radiopharmaceuticals Technology, Batan, Serpong in the period of July to November 2014. SKBR-3 cell lines were inoculated on two groups of immunocompetent mice (Mus musculus) strain Balb/c, namely the treatment group (n=8) and controls (n=8). Cyclosporine A as an immunosupressan agent was given only to the treatment group before and after SKBR 3 inoculation. No macroscopically visible tumor growth at the site of inoculation in both of groups. There was a significant difference between the treatment group and the control group in leukocyte levels (p: 0.01), lymphocytes (p: 0.01), monocytes (p: 0.01), and neutrophil segments (p: 0.01). Two treatment groups of mice obtained cloudy degeneration in the liver. This method has significantly reduced the immunity of mice (Mus musclus) strain Balb/c but still cannot grow malignancies in experimental animals. [MKB. 2016;48(1):39–44]Key words: HER2 positive breast cancer, oncology animal models DOI: 10.15395/mkb.v48n1.732]]>
