The present invention relates to a method for the rapid and reliable detection of drug-induced mutations in the reverse transcriptase gene allowing the simultaneous characterization of a range of codons involved in drug resistance using specific sets of probes optimized to function together in a reverse-hybridization assay. More particularly, the present invention relates to a method for determining the susceptibility to antiviral drugs of HIV strains present in a biological sample, comprising: (i) if need be releasing, isolating or concentrating the polynucleic acids present in the sample; (ii) if need be amplifying the relevant part of the reverse transcriptase genes present in said sample with at least one suitable primer pair; (iii) hybridizing the polynucleic acids of step (i) or (ii) with at least two RT gene probes hybridizing specifically to one or more target sequences with said probes being applied to known locations on a solid support and with said probes being capable of simultaneously hybridizing to their respective target regions under appropriate hybridization and wash conditions allowing the detection of homologous targets, or said probes hybridizing specifically with a sequence complementary to any of said target sequences, or a sequence wherein T is replaced by U; (iv) detecting the hybrids formed in step (iii); (v) inferring the nucleotide sequence at the codons of interest and/or the amino acids of the codons of interest and/or antiviral drug resistance spectrum, and possibly the type of HIV isolates involved from the differential hybridization signal(s) obtained in step (iv).
本发明涉及一种快速、可靠地检测逆转录酶
基因中药物诱导突变的方法,该方法可利用经过优化的特定探针组在逆向杂交试验中共同发挥作用,同时鉴定一系列涉及耐药性的密码子。更具体地说,本发明涉及一种确定
生物样本中存在的艾滋病毒菌株对抗病毒药物敏感性的方法,该方法包括:(i) 必要时释放、分离或浓缩样品中的多聚核酸; (ii) 必要时用至少一对合适的引物扩增所述样品中存在的逆转录酶
基因的相关部分;(iii) 将步骤(i)或(ii)中的多聚核酸与至少两个与一个或多个目标序列特异性杂交的 RT
基因探针杂交,所述探针应用于固体支持物上的已知位置,在适当的杂交和洗 涤条件下,所述探针能够同时与各自的目标区域杂交,从而检测同源目标,或所述探针 与任何所述目标序列的互补序列或 T 被 U 取代的序列特异性杂交;(iv) 检测步骤(iii)中形成的杂交体; (v) 根据步骤(iv)中获得的不同杂交信号,推断相关密码子的核苷酸序列和/或相关密码子的
氨基酸和/或抗病毒药物耐药谱,以及可能涉及的艾滋病毒分离株的类型。