Instituto de Medicina Regional (IMR), Universidad Nacional del Nordeste (UNNE), Av. Las Heras 727, (3500) Resistencia, Chaco, Argentina.
Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Godoy Cruz 2290, (C1425FQB) Ciudad Autónoma de Buenos Aires, Argentina.
Microb Genom. 2024 Oct;10(10). doi: 10.1099/mgen.0.001302.
Paracoccidioidomycosis is a severe systemic endemic mycosis caused by spp. which mainly affects individuals in Latin America. Progress in genomics has been slow, as evidenced by the incomplete reference databases available. Next-generation sequencing is a valuable tool for epidemiological surveillance and genomic characterization. With the ability to sequence long reads without the need for prior amplification, Oxford Nanopore Technology (ONT) offers several advantages, but high-quality and high-quantity DNA samples are required to achieve satisfactory results. Due to the low concentration of DNA in clinical samples and inefficient culture isolation methods, DNA extraction can be a significant barrier to genomic studies of this genus. This study proposes a method to obtain a high-coverage genome assembly for using an improved DNA extraction method suitable for sequencing with ONT. The assembly obtained was comparable in size to those constructed from available data from Illumina technology. To our knowledge, this is the first genome assembly of sp. of such a large size constructed using ONT.
球孢子菌病是一种由 spp.引起的严重系统性地方流行真菌病,主要影响拉丁美洲的个体。由于可用的参考数据库不完整,进展缓慢。下一代测序是一种用于流行病学监测和基因组特征描述的有价值的工具。牛津纳米孔技术(ONT)无需事先扩增即可进行长读测序,具有多种优势,但需要高质量和高数量的 DNA 样本才能获得满意的结果。由于临床样本中 DNA 的浓度较低,以及培养分离方法效率低下,因此 DNA 提取可能是该属基因组研究的一个重大障碍。本研究提出了一种使用适合 ONT 测序的改良 DNA 提取方法获得高覆盖率 基因组组装的方法。所获得的组装与使用 Illumina 技术获得的现有数据构建的组装大小相当。据我们所知,这是使用 ONT 构建的如此大规模的 sp.的第一个基因组组装。