Abstract: Absence of this stabilizing interaction in Gln151-->Met HIV-1 RT mutant may be a key factor for the known drug resistance of this mutant toward dideoxy-type drugs and AZT (Shirasaka T et al., 1995, Proc Natl Acad Sci USA 92:2398-2402: Iversen AK et al., 1996, J Virol 70:1086-1090).
Comparative fitness of multi-dideoxynucleoside-resistant human immunodeficiency virus type 1 (HIV-1) in an In vitro competitive HIV-1 replication assay.
Abstract: We examined whether human immunodeficiency virus type 1 (HIV-1) fitness was altered upon the acquisition of a set or subset of five mutations (A62V, V75I, F77L, F116Y, and Q151M) in the pol gene, which confers resistance to multiple dideoxynucleosides (MDR), as well as the zidovudine resistance-associated mutation T215Y, using a competitive HIV-1 replication assay in a setting of an HXB2D genetic background.
Highly drug-resistant HIV-1 clinical isolates are cross-resistant to many antiretroviral compounds in current clinical development.
Abstract: The isolates included one multinucleoside-resistant virus containing the Q151M mutation, and four clinical isolates containing multiple RT and protease resistance mutations.
Multiple drug resistance genotype causing failure of antiretroviral treatment in an HIV-infected patient heavily exposed to nucleoside analogues.
PMID: 10421048
1999
European journal of clinical microbiology & infectious diseases
Abstract: A point mutation nested PCR assay showed that the patient carried a virus with a codon Q151M mutation, which confers multiple drug resistance to nucleoside analogues.
Abstract: Genetic sequence analysis showed that, despite none of the classically associated mutations to Q151M being present at the beginning of treatment, continuous genetic evolution under selective drug pressure allowed the virus to accumulate mutations at codons 62, 74 and 116 over time.
Emergence of zidovudine and multidrug-resistance mutations in the HIV-1 reverse transcriptase gene in therapy-naive patients receiving stavudine plus didanosine combination therapy. STADI Group.
Abstract: Among the 39 subjects, 18 (46%) developed mutations: one developed the Val75Thr/Ala mutation, four (10%) developed a Gln151Met multidrug-resistance mutation (MDR), associated in one of them with the Phe77Leu and the Phe116Tyr MDR mutations and 14 (36%) developed one or more zidovudine-specific mutations (Met41Leu, Asp67Asn, Lys70Arg, Leu210Trp, Thr215Tyr/Phe).
Abstract: The development of a Met41Leu zidovudine-specific mutation was associated with the development of a Gln151Met mutation in one patient.
Fast genotypic detection of drug resistance mutations in the HIV-1 reverse transcriptase gene of treatment-naive patients.
Abstract: Additionally, a selective polymerase chain reaction (PCR) for the multiple dideoxynucleoside resistance (MddNR) mutation Q151M was performed.
The impact of multidideoxynucleoside resistance-conferring mutations in human immunodeficiency virus type 1 reverse transcriptase on polymerase fidelity and error specificity.
Abstract: The Q151M RT mutant generated new hot spots, which were not observed for wild-type HIV-1 RT previously.
Abstract: The appearance, in the reverse transcriptase (RT), of the Q151M mutation in such variants precedes the sequential appearance of three or four additional mutations, resulting in a highly resistant virus.
Abstract: The overall error rates for the wild-type, the Q151M, and the VILYM RTs were 4.5 x 10(-5), 4.0 x 10(-5), and 2.3 x 10(-5) per nucleotide, respectively.
Abstract: Therefore, we have examined wild-type HIV-1BH10 RT and two nucleoside analog-resistant variants, the Q151M and
Altered drug sensitivity, fitness, and evolution of human immunodeficiency virus type 1 with pol gene mutations conferring multi-dideoxynucleoside resistance.
PMID: 9593005
1998
The Journal of infectious diseases
Abstract: Investigations were done to determine whether the replication kinetics of human immunodeficiency virus (HIV)-1 were altered when the virus acquired a set or subsets of five mutations (A62V, V75I, F77L, F116Y, and Q151M) in the pol gene conferring resistance to multiple dideoxynucleosides.
Emergence of multi-dideoxynucleoside-resistant human immunodeficiency virus type 1 variants, viral sequence variation, and disease progression in patients receiving antiretroviral chemotherapy.
PMID: 9607827
1998
The Journal of infectious diseases
Abstract: Q151M was among the first of the substitutions to appear.
Abstract: A set of five reverse transcriptase mutations, which include Q151M, is known to confer multi-dideoxynucleoside resistance (MDR) in human immunodeficiency virus type 1 (HIV-1).
Multiple dideoxynucleoside analogue-resistant (MddNR) HIV-1 strains isolated from patients from different European countries.
Abstract: DESIGN AND METHODS: Blood samples from patients after > or = 6 months of treatment with multiple ddN were screened for the MddNR mutation Q151M.
Abstract: Viruses typically contained amino acid substitutions V75F, F77L, F116Y and Q151M in the RT gene.