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Relationship between functional profile of HIV-1 specific CD8 T cells and epitope variability with the selection of escape mutants in acute HIV-1 infection
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نویسنده
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ferrari g. ,korber b. ,goonetilleke n. ,liu m.k.p. ,turnbull e.l. ,salazar-gonzalez j.f. ,hawkins n. ,self s. ,watson s. ,betts m.r. ,gay c. ,mcghee k. ,pellegrino p. ,williams i. ,tomaras g.d. ,haynes b.f. ,gray c.m. ,borrow p. ,roederer m. ,mcmichael a.j. ,weinhold k.j.
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منبع
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plos pathogens - 2011 - دوره : 7 - شماره : 2
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چکیده
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In the present study,we analyzed the functional profile of cd8+ t-cell responses directed against autologous transmitted/founder hiv-1 isolates during acute and early infection,and examined whether multifunctionality is required for selection of virus escape mutations. seven anti-retroviral therapy-naïve subjects were studied in detail between 1 and 87 weeks following onset of symptoms of acute hiv-1 infection. synthetic peptides representing the autologous transmitted/founder hiv-1 sequences were used in multiparameter flow cytometry assays to determine the functionality of hiv-1-specific cd8+ t memory cells. in all seven patients,the earliest t cell responses were predominantly oligofunctional,although the relative contribution of multifunctional cell responses increased significantly with time from infection. interestingly,only the magnitude of the total and not of the poly-functional t-cell responses was significantly associated with the selection of escape mutants. however,the high contribution of mip-1β-producing cd8+ t-cells to the total response suggests that mechanisms not limited to cytotoxicity could be exerting immune pressure during acute infection. lastly,we show that epitope entropy,reflecting the capacity of the epitope to tolerate mutational change and defined as the diversity of epitope sequences at the population level,was also correlated with rate of emergence of escape mutants.
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آدرس
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department of surgery,duke university medical center,durham,nc, United States, los alamos national laboratory,theoretical division,los alamos,nm, United States, university of oxford,weatherall institute of molecular medicine,oxford, United Kingdom, university of oxford,weatherall institute of molecular medicine,oxford, United Kingdom, nuffield department of clinical medicine,university of oxford,the jenner institute,newbury, United Kingdom, department of microbiology,university of alabama at birmingham,birmingham,al, United States, vid fred hutchinson cancer research center,seattle,wa, United States, vid fred hutchinson cancer research center,seattle,wa, United States, los alamos national laboratory,theoretical division,los alamos,nm,united states,departmental of statistical sciences,baylor university,waco,tx, United States, department of microbiology,university of pennsylvania school of medicine,philadelphia,pa, United States, department of medicine,university of north carolina at chapel hill,chapel hill,nc, United States, department of medicine,duke university medical center,durham,nc, United States, centre for sexual health and hiv research,mortimer market centre,london, United Kingdom, centre for sexual health and hiv research,mortimer market centre,london, United Kingdom, department of surgery,duke university medical center,durham,nc,united states,department of immunology,duke university medical center,durham,nc, United States, department of medicine,duke university medical center,durham,nc,united states,department of immunology,duke university medical center,durham,nc, United States, aids research unit,national institute for communicable diseases,johannesburg, South Africa, nuffield department of clinical medicine,university of oxford,the jenner institute,newbury, United Kingdom, vaccine research center,national institute of health,bethesda,md, United States, university of oxford,weatherall institute of molecular medicine,oxford, United Kingdom, department of surgery,duke university medical center,durham,nc,united states,department of immunology,duke university medical center,durham,nc, United States
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Authors
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