Abstract
T cell epitopes restricted by several protective HLA alleles, such as B*57, B*5801, B*27, B*51 and B*13, have been very well defined over the past two decades. We investigated 32 well-known T cell epitopes restricted by protective HLA molecules among 54 Chinese men who have sex with men (MSM) at the early stage of HIV-1 infection. Subjects in our cohort carrying protective HLA types did not exhibit slow CD4 T cell count decline (P = 0.489) or low viral load set points (P = 0.500). Variations occurred in 96.88% (31/32) of the known wild-type epitopes (rate 1.85–100%), and the variation rates of the strains of two CRF01_AE lineages were significantly higher than those of non-CRF01_AE strains (76.82% vs. 48.96%, P = 0.004; 71.27% vs. 8.96%, P = 0.025). Subjects infected with CRF01_AE exhibited relatively rapid disease progression (P = 0.035). Therefore, the lack of wild-type protective T cell epitopes restricted by classic protective HLA alleles in CRF01_AE HIV-1 strains may be one of the reasons why rapid disease progression is observed in Chinese MSM with HIV-1 infection.
Similar content being viewed by others
Abbreviations
- HIV-1:
-
Human immunodeficiency virus type 1
- HLA:
-
Human leukocyte antigen
- MSM:
-
Men who have sex with men
- ELISA:
-
Enzyme-linked immunosorbent assay
- VL:
-
Viral load
- PCR-SSP:
-
Polymerase chain reaction sequence-specific primer
References
McMichael AJ, Borrow P, Tomaras GD, Goonetilleke N, Haynes BF (2010) The immune response during acute HIV-1 infection: clues for vaccine development. Nat Rev Immunol 10:11–23. https://doi.org/10.1038/nri2674
Troyer RM, McNevin J, Liu Y, Zhang SC, Krizan RW, Abraha A, Tebit DM, Zhao H, Avila S, Lobritz MA et al (2009) Variable fitness impact of HIV-1 escape mutations to cytotoxic T lymphocyte (CTL) response. PLoS Pathog 5:e1000365. https://doi.org/10.1371/journal.ppat.1000365
Allen TM, Altfeld M, Geer SC, Kalife ET, Moore C, O’Sullivan KM, DeSouza I, Feeney ME, Eldridge RL, Maier EL et al (2005) Selective escape from CD8 + T-cell responses represents a major driving force of human immunodeficiency virus type 1 (HIV-1) sequence diversity and reveals constraints on HIV-1 evolution†. J Virol 79:13239–13249. https://doi.org/10.1128/jvi.79.21.13239-13249.2005
McMichael AJ (2006) HIV vaccines. Annu Rev Immunol 24:227–255. https://doi.org/10.1146/annurev.immunol.24.021605.090605
Ranasinghe SR, Kramer HB, Wright C, Kessler BM, di Gleria K, Zhang Y, Gillespie GM, Blais ME, Culshaw A, Pichulik T et al (2011) The antiviral efficacy of HIV-specific CD8(+) T-cells to a conserved epitope is heavily dependent on the infecting HIV-1 isolate. PLoS Pathog 7:e1001341. https://doi.org/10.1371/journal.ppat.1001341
Sun J, Zhao Y, Peng Y, Han Z, Liu G, Qin L, Liu S, Sun H, Wu H, Dong T et al (2016) Multiple T-cell responses are associated with better control of acute HIV-1 infection: an observational study. Medicine 95:e4429. https://doi.org/10.1097/MD.0000000000004429
Hanke T (2014) Conserved immunogens in prime-boost strategies for the next-generation HIV-1 vaccines. Expert Opin Biol Ther 14:601–616. https://doi.org/10.1517/14712598.2014.885946
Excler JL, Robb ML, Kim JH (2015) Prospects for a globally effective HIV-1 vaccine. Vaccine 33(Suppl 4):D4–D12. https://doi.org/10.1016/j.vaccine.2015.03.059
McMichael A, Mwau M, Hanke T (2002) HIV T cell vaccines, the importance of clades. Vaccine 20:1918–1921. https://doi.org/10.1016/s0264-410x(02)00067-1
Santra S, Korber BT, Muldoon M, Barouch DH, Nabel GJ, Gao F, Hahn BH, Haynes BF, Letvin NL (2008) A centralized gene-based HIV-1 vaccine elicits broad cross-clade cellular immune responses in rhesus monkeys. Proc Natl Acad Sci USA 105:10489–10494. https://doi.org/10.1073/pnas.0803352105
Gao X, Bashirova A, Iversen AKN, Phair J, Goedert JJ, Buchbinder S, Hoots K, Vlahov D, Altfeld M, O’Brien SJ et al (2005) AIDS restriction HLA allotypes target distinct intervals of HIV-1 pathogenesis. Nat Med 11:1290–1292. https://doi.org/10.1038/nm1333
Zhang Y, Peng Y, Yan H, Xu K, Saito M, Wu H, Chen X, Ranasinghe S, Kuse N, Powell T et al (2011) Multilayered defense in HLA-B51-associated HIV viral control. J Immunol 187:684–691. https://doi.org/10.4049/jimmunol.1100316
Leslie A, Matthews PC, Listgarten J, Carlson JM, Kadie C, Ndung’u T, Brander C, Coovadia H, Walker BD, Heckerman D et al (2010) Additive contribution of HLA class I alleles in the immune control of HIV-1 infection. J Virol 84:9879–9888. https://doi.org/10.1128/jvi.00320-10
Martinez-Picado J, Prado JG, Fry EE, Pfafferott K, Leslie A, Chetty S, Thobakgale C, Honeyborne I, Crawford H, Matthews P et al (2006) Fitness cost of escape mutations in p24 Gag in association with control of human immunodeficiency virus type 1. J Virol 80:3617–3623. https://doi.org/10.1128/JVI.80.7.3617-3623.2006
Goulder PJ, Phillips RE, Colbert RA, McAdam S, Ogg G, Nowak MA, Giangrande P, Luzzi G, Morgan B, Edwards A et al (1997) Late escape from an immunodominant cytotoxic T-lymphocyte response associated with progression to AIDS. Nat Med 3:212–217
Crawford H, Matthews PC, Schaefer M, Carlson JM, Leslie A, Kilembe W, Allen S, Ndung’u T, Heckerman D, Hunter E et al (2010) The hypervariable HIV-1 capsid protein residues comprise HLA-driven CD8 + T-cell escape mutations and covarying HLA-independent polymorphisms. J Virol 85:1384–1390. https://doi.org/10.1128/jvi.01879-10
Han X, An M, Zhang M, Zhao B, Wu H, Liang S, Chen X, Zhuang M, Yan H, Fu J et al (2013) Identification of 3 distinct HIV-1 founding strains responsible for expanding epidemic among men who have sex with men in 9 Chinese cities. J Acquir Immune Defic Syndr. 64:16–24. https://doi.org/10.1097/QAI.0b013e3182932210
An M, Han X, Xu J, Chu Z, Jia M, Wu H, Lu L, Takebe Y, Shang H (2012) Reconstituting the epidemic history of HIV strain CRF01_AE among men who have sex with men (MSM) in Liaoning, northeastern China: implications for the expanding epidemic among MSM in China. J Virol 86:12402–12406. https://doi.org/10.1128/JVI.00262-12
Jiang S, He X, Xing H, Ruan Y, Hong K, Cheng C, Hu Y, Xin R, Wei J, Feng Y et al (2012) A comprehensive mapping of HIV-1 genotypes in various risk groups and regions across China based on a nationwide molecular epidemiologic survey. PLoS One 7:e47289. https://doi.org/10.1371/journal.pone.0047289
Pai NP, Ng OT, Lin L, Laeyendecker O, Quinn TC, Sun YJ, Lee CC, Leo YS (2011) Increased rate of CD4 + T-cell decline and faster time to antiretroviral therapy in HIV-1 subtype CRF01_AE infected seroconverters in Singapore. PLoS One 6:e15738. https://doi.org/10.1371/journal.pone.0015738
Time (2000) from HIV-1 seroconversion to AIDS and death before widespread use of highly-active antiretroviral therapy: a collaborative re-analysis. Lancet 355:1131–1137. https://doi.org/10.1016/s0140-6736(00)02061-4
Li Y, Han Y, Xie J, Gu L, Li W, Wang H, Lv W, Song X, Li Y, Routy JP et al (2014) CRF01_AE subtype is associated with X4 tropism and fast HIV progression in Chinese patients infected through sexual transmission. AIDS 28:521–530. https://doi.org/10.1097/QAD.0000000000000125
Chu M, Zhang W, Zhang X, Jiang W, Huan X, Meng X, Zhu B, Yang Y, Tao Y, Tian T et al (2017) HIV-1 CRF01_AE strain is associated with faster HIV/AIDS progression in Jiangsu Province, China. Sci Rep 7:1570. https://doi.org/10.1038/s41598-017-01858-2
Brener J, Gall A, Batorsky R, Riddell L, Buus S, Leitman E, Kellam P, Allen T, Goulder P, Matthews PC (2015) Disease progression despite protective HLA expression in an HIV-infected transmission pair. Retrovirology 12:55. https://doi.org/10.1186/s12977-015-0179-z
Huang X, Lodi S, Fox Z, Li W, Phillips A, Porter K, Lutsar I, Kelleher A, Li N, Xu X et al (2013) Rate of CD4 decline and HIV-RNA change following HIV seroconversion in men who have sex with men: a comparison between the Beijing PRIMO and CASCADE cohorts. J Acquir Immune Defic Syndr 62:441–446. https://doi.org/10.1097/QAI.0b013e31827f5c9a
Goonetilleke N, Liu MKP, Salazar-Gonzalez JF, Ferrari G, Giorgi E, Ganusov VV, Keele BF, Learn GH, Turnbull EL, Salazar MG et al (2009) The first T cell response to transmitted/founder virus contributes to the control of acute viremia in HIV-1 infection. J Exp Med 206:1253–1272. https://doi.org/10.1084/jem.20090365
Deng K, Pertea M, Rongvaux A, Wang L, Durand CM, Ghiaur G, Lai J, McHugh HL, Hao H, Zhang H et al (2015) Broad CTL response is required to clear latent HIV-1 due to dominance of escape mutations. Nature 517:381–385. https://doi.org/10.1038/nature14053
McMichael AJ, Rowland-Jones SL (2001) Cellular immune responses to HIV. Nature 410:980–987. https://doi.org/10.1038/35073658
Carlson JM, Du VY, Pfeifer N, Bansal A, Tan VY, Power K, Brumme CJ, Kreimer A, DeZiel CE, Fusi N et al (2016) Impact of pre-adapted HIV transmission. Nat Med 22:606–613. https://doi.org/10.1038/nm.4100
Pereyra F, Heckerman D, Carlson JM, Kadie C, Soghoian DZ, Karel D, Goldenthal A, Davis OB, DeZiel CE, Lin T et al (2014) HIV control is mediated in part by CD8 + T-cell targeting of specific epitopes. J Virol 88:12937–12948. https://doi.org/10.1128/jvi.01004-14
Han X, Xu J, Chu Z, Dai D, Lu C, Wang X, Zhao L, Zhang C, Ji Y, Zhang H et al (2011) Screening acute HIV infections among Chinese men who have sex with men from voluntary counseling & testing centers. PLoS ONE 6:e28792. https://doi.org/10.1371/journal.pone.0028792
Huang X, Chen H, Li W, Li H, Jin X, Perelson AS, Fox Z, Zhang T, Xu X, Wu H (2012) Precise determination of time to reach viral load set point after acute HIV-1 infection. J Acquir Immune Defic Syndr 61:448–454. https://doi.org/10.1097/QAI.0b013e31827146e0
Jiang F, Han X, Zhang H, Zhao B, An M, Xu J, Chu Z, Dong T, Shang H Multi-layered Gag-specific immunodominant responses contribute to improved viral control in the CRF01_AE subtype of HIV-1-infected MSM subjects. BMC Immunol 2016, 17, 28, https://doi.org/10.1186/s12865-016-0166-8
Fiebig EW, Wright DJ, Rawal BD, Garrett PE, Schumacher RT, Peddada L, Heldebrant C, Smith R, Conrad A, Kleinman SH et al (2003) Dynamics of HIV viremia and antibody seroconversion in plasma donors: implications for diagnosis and staging of primary HIV infection. Aids 17:1871–1879. https://doi.org/10.1097/01.aids.0000076308.76477.b8
Hu QH, Xu JJ, Zou HC, Liu J, Zhang J, Ding HB, Qian HZ, Li SR, Liu Y, Jiang YJ et al (2014) Risk factors associated with prevalent and incident syphilis among an HIV-infected cohort in Northeast China. BMC Infect Dis 14:658. https://doi.org/10.1186/s12879-014-0658-1
Hu QH, Xu JJ, Chu ZX, Zhang J, Yu YQ, Yu H, Ding HB, Jiang YJ, Geng WQ, Wang N et al (2017) Prevalence and determinants of herpes simplex virus type 2 (HSV-2)/syphilis co-infection and HSV-2 mono-infection among human immunodeficiency virus positive men who have sex with men: a cross-sectional study in Northeast China. Jpn J Infect Dis 70:284–289. https://doi.org/10.7883/yoken.JJID.2016.177
Salazar-Gonzalez JF, Bailes E, Pham KT, Salazar MG, Guffey MB, Keele BF, Derdeyn CA, Farmer P, Hunter E, Allen S et al (2008) Deciphering human immunodeficiency virus type 1 transmission and early envelope diversification by single-genome amplification and sequencing. J Virol 82:3952–3970. https://doi.org/10.1128/jvi.02660-07
Zhang H, Zhao B, Han X, Wang Z, Liu B, Lu C, Zhang M, Liu J, Chen O, Hu Q et al (2013) Associations of HLA class I antigen specificities and haplotypes with disease progression in HIV-1-infected Hans in Northern China. Human Immunol 74:1636–1642. https://doi.org/10.1016/j.humimm.2013.08.287
Ngumbela KC, Day CL, Mncube Z, Nair K, Ramduth D, Thobakgale C, Moodley E, Reddy S, de Pierres C, Mkhwanazi N et al (2008) Targeting of a CD8 T cell env epitope presented by HLA-B*5802 is associated with markers of HIV disease progression and lack of selection pressure. AIDS Res Hum Retrovir 24:72–82. https://doi.org/10.1089/aid.2007.0124
Llano A, Williams A, Olvera A, Silva-Arrieta S, Brander C (2013) Best-characterized HIV-1 CTL epitopes: the 2013 update. In: Yusim K et al (eds) HIV Molecular Immunology, Theoretical Biology and Biophysics Group, Los Alamos National Laboratory, Los Alamos, New Mexico, pp 3–25
Honeyborne I, Prendergast A, Pereyra F, Leslie A, Crawford H, Payne R, Reddy S, Bishop K, Moodley E, Nair K et al (2007) Control of human immunodeficiency virus type 1 is associated with HLA-B*13 and targeting of multiple gag-specific CD8 + T-cell epitopes. J Virol 81:3667–3672. https://doi.org/10.1128/jvi.02689-06
Zhang H, Han X, Zhao B, An M, Wang Z, Jiang F, Xu J, Zhang Z, Dong T, Shang H (2015) Multilayered HIV-1 gag-specific T-cell responses contribute to slow progression in HLA-A*30-B*13-C*06-positive patients. AIDS 29:993–1002. https://doi.org/10.1097/QAD.0000000000000652
Goulder PJR, Bunce M, Krausa P, McIntyre K, Crowley S, Morgan B, Edwards A, Giangrande P, Phillips RE, McMichael AJ, Novel (1996) Cross-restricted, conserved, and immunodominant cytotoxic T lymphocyte epitopes in slow progressors in HIV type 1 infection. Aids Res Hum Retrovir 12:1691–1698. https://doi.org/10.1089/aid.1996.12.1691
Kiepiela P, Leslie AJ, Honeyborne I, Ramduth D, Thobakgale C, Chetty S, Rathnavalu P, Moore C, Pfafferott KJ, Hilton L et al (2004) Dominant influence of HLA-B in mediating the potential co-evolution of HIV and HLA. Nature 432:769–775. https://doi.org/10.1038/nature03113
Ferre AL, Lemongello D, Hunt PW, Morris MM, Garcia JC, Pollard RB, Yee HF Jr, Martin JN, Deeks SG, Shacklett BL (2010) Immunodominant HIV-specific CD8 + T-cell responses are common to blood and gastrointestinal mucosa, and Gag-specific responses dominate in rectal mucosa of HIV controllers. J Virol 84:10354–10365. https://doi.org/10.1128/JVI.00803-10
Altfeld M, Kalife ET, Qi Y, Streeck H, Lichterfeld M, Johnston MN, Burgett N, Swartz ME, Yang A, Alter G et al (2006) HLA alleles associated with delayed progression to AIDS contribute strongly to the initial CD8(+) T cell response against HIV-1. PLoS Med 3:e403. https://doi.org/10.1371/journal.pmed.0030403
Goulder PJ, Walker BD (2012) HIV and HLA class I: an evolving relationship. Immunity 37:426–440. https://doi.org/10.1016/j.immuni.2012.09.005
Chikata T, Carlson JM, Tamura Y, Borghan MA, Naruto T, Hashimoto M, Murakoshi H, Le AQ, Mallal S, John M et al (2014) Host-specific adaptation of HIV-1 subtype B in the Japanese population. J Virol 88:4764–4775. https://doi.org/10.1128/jvi.00147-14
Carlson JM, Le AQ, Shahid A, Brumme ZL (2015) HIV-1 adaptation to HLA: a window into virus-host immune interactions. Trends Microbiol 23:212–224. https://doi.org/10.1016/j.tim.2014.12.008
Kloverpris HN, Leslie A, Goulder P (2015) Role of HLA adaptation in HIV evolution. Front Immunol 6:665. https://doi.org/10.3389/fimmu.2015.00665
Payne R, Muenchhoff M, Mann J, Roberts HE, Matthews P, Adland E, Hempenstall A, Huang KH, Brockman M, Brumme Z et al (2014) Impact of HLA-driven HIV adaptation on virulence in populations of high HIV seroprevalence. Proc Natl Acad Sci USA 111:E5393–E5400. https://doi.org/10.1073/pnas.1413339111
Kawashima Y, Pfafferott K, Frater J, Matthews P, Payne R, Addo M, Gatanaga H, Fujiwara M, Hachiya A, Koizumi H et al (2009) Adaptation of HIV-1 to human leukocyte antigen class I. Nature 458:641–645. https://doi.org/10.1038/nature07746
Katoh J, Kawana-Tachikawa A, Shimizu A, Zhu D, Han C, Nakamura H, Koga M, Kikuchi T, Adachi E, Koibuchi T et al (2016) Rapid HIV-1 disease progression in individuals infected with a virus adapted to its host population. PLoS One 11:e0150397. https://doi.org/10.1371/journal.pone.0150397
Kawashima Y, Kuse N, Gatanaga H, Naruto T, Fujiwara M, Dohki S, Akahoshi T, Maenaka K, Goulder P, Oka S et al (2010) Long-term control of HIV-1 in hemophiliacs carrying slow-progressing allele HLA-B*5101. J Virol 84:7151–7160. https://doi.org/10.1128/JVI.00171-10
Zhang X, Huang X, Xia W, Li W, Zhang T, Wu H, Xu X, Yan H (2013) HLA-B*44 is associated with a lower viral set point and slow CD4 decline in a cohort of Chinese homosexual men acutely infected with HIV-1. Clin Vaccine Immunol 20:1048–1054. https://doi.org/10.1128/CVI.00015-13
Dong T, Zhang Y, Xu KY, Yan H, James I, Peng Y, Blais ME, Gaudieri S, Chen X, Lun W et al (2011) Extensive HLA-driven viral diversity following a narrow-source HIV-1 outbreak in rural China. Blood 118:98–106. https://doi.org/10.1182/blood-2010-06-291963
Koup RA, Safrit JT, Cao Y, Andrews CA, McLeod G, Borkowsky W, Farthing C, Ho DD (1994) Temporal association of cellular immune responses with the initial control of viremia in primary human immunodeficiency virus type 1 syndrome. J Virol 68:4650–4655
Borrow P, Lewicki H, Hahn BH, Shaw GM, Oldstone MB (1994) Virus-specific CD8 + cytotoxic T-lymphocyte activity associated with control of viremia in primary human immunodeficiency virus type 1 infection. J Virol 68:6103–6110
Christie NM, Willer DO, Lobritz MA, Chan JK, Arts EJ, Ostrowski MA, Cochrane A, Luscher MA, MacDonald KS (2009) Viral fitness implications of variation within an immunodominant CD8 + T-cell epitope of HIV-1. Virology 388:137–146. https://doi.org/10.1016/j.virol.2009.03.003
Leslie AJ, Pfafferott KJ, Chetty P, Draenert R, Addo MM, Feeney M, Tang Y, Holmes EC, Allen T, Prado JG et al (2004) HIV evolution: CTL escape mutation and reversion after transmission. Nat Med 10:282–289. https://doi.org/10.1038/nm992
Schneidewind A, Brockman MA, Sidney J, Wang YE, Chen H, Suscovich TJ, Li B, Adam RI, Allgaier RL, Mothe BR et al (2008) Structural and functional constraints limit options for cytotoxic T-lymphocyte escape in the immunodominant HLA-B27-restricted epitope in human immunodeficiency virus type 1 capsid. J Virol 82:5594–5605. https://doi.org/10.1128/jvi.02356-07
Setiawan LC, Gijsbers EF, van Nuenen AC, Kootstra NA (2015) Viral evolution in HLA-B27-restricted CTL epitopes in HIV-1 infected individuals. J Gen Virol. https://doi.org/10.1099/vir.0.000148
Ammaranond P, van Bockel DJ, Petoumenos K, McMurchie M, Finlayson R, Middleton MG, Davenport MP, Venturi V, Suzuki K, Gelgor L et al (2011) HIV immune escape at an immunodominant epitope in HLA-B*27-positive individuals predicts viral load outcome. J Immunol 186:479–488. https://doi.org/10.4049/jimmunol.0903227
Feeney ME, Tang Y, Roosevelt KA, Leslie AJ, McIntosh K, Karthas N, Walker BD, Goulder PJ (2004) Immune escape precedes breakthrough human immunodeficiency virus type 1 viremia and broadening of the cytotoxic T-lymphocyte response in an HLA-B27-positive long-term-nonprogressing child. J Virol 78:8927–8930. https://doi.org/10.1128/jvi.78.16.8927-8930.2004
Miura T, Brockman MA, Schneidewind A, Lobritz M, Pereyra F, Rathod A, Block BL, Brumme ZL, Brumme CJ, Baker B et al (2009) HLA-B57/B*5801 human immunodeficiency virus type 1 elite controllers select for rare gag variants associated with reduced viral replication capacity and strong cytotoxic T-lymphocyte [corrected] recognition. J Virol 83:2743–2755. https://doi.org/10.1128/JVI.02265-08
Gijsbers EF, Feenstra KA, van Nuenen AC, Navis M, Heringa J, Schuitemaker H, Kootstra NA (2013) HIV-1 replication fitness of HLA-B*57/58:01 CTL escape variants is restored by the accumulation of compensatory mutations in gag. PLoS One 8:e81235. https://doi.org/10.1371/journal.pone.0081235
Pant Pai N, Shivkumar S, Cajas JM (2012) Does genetic diversity of HIV-1 non-B subtypes differentially impact disease progression in treatment-naive HIV-1-infected individuals? A systematic review of evidence: 1996–2010. J Acquir Immune Defic Syndr 59:382–388. https://doi.org/10.1097/QAI.0b013e31824a0628
Kiwanuka N, Robb M, Laeyendecker O, Kigozi G, Wabwire-Mangen F, Makumbi FE, Nalugoda F, Kagaayi J, Eller M, Eller LA et al (2009) HIV-1 viral subtype differences in the rate of CD4 + T-cell decline among HIV seroincident antiretroviral naive persons in Rakai District, Uganda. J Acquir Immune Defic Syndrom. https://doi.org/10.1097/QAI.0b013e3181c98fc0
Keller M, Lu Y, Lalonde RG, Klein MB (2009) Impact of HIV-1 viral subtype on CD4 + T-cell decline and clinical outcomes in antiretroviral naive patients receiving universal healthcare. Aids. https://doi.org/10.1097/QAD.0b013e328326f77f
Yuan R, Cheng H, Chen LS, Zhang X, Wang B (2016) Prevalence of different HIV-1 subtypes in sexual transmission in China: a systematic review and meta-analysis. Epidemiol Infect 144:2144–2153. https://doi.org/10.1017/s0950268816000212
Funding
This work was supported by mega projects of national science research for the 13th Five-Year Plan (2017ZX10201101), “Innovation Team Development Program 2016 (IRT_16R70)” of The Ministry of Education, and Natural Science Foundations (81871637,81371787,81701985).
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of interest
The authors declare that they have no conflict of interest.
Ethical approval
All procedures performed in this study involving human participants were in accordance with the ethical standards of Medical Research Ethics Committee of the First Affiliated Hospital of China Medical University.
Informed consent
All subjects provided informed consent for this study.
Additional information
Publisher’s Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
He, C., Han, X., Zhang, H. et al. High polymorphism rates in well-known T cell epitopes restricted by protective HLA alleles during HIV infection are associated with rapid disease progression in early-infected MSM in China. Med Microbiol Immunol 208, 239–251 (2019). https://doi.org/10.1007/s00430-019-00585-x
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00430-019-00585-x