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IL-21 and IFNalpha therapy rescues terminally-differentiated NK cells and limit SIV reservoir in ART-treated macaques [cohort3]

ABSTRACT: IL-21 and IFNalpha therapy rescues terminally-differentiated NK cells and limit SIV reservoir in ART-treated macaques [cohort3]

PROVIDER: PRJNA686109 | ENA |

REPOSITORIES: ENA

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IL-21 and IFNalpha therapy rescues terminally-differentiated NK cells and limit SIV reservoir in ART-treated macaques [cohort3]

Project description:Unlike HIV infection, which progresses to AIDS absent suppressive anti-retroviral therapy (ART), nonpathogenic infections in natural hosts, such African green monkeys (AGMs), are characterized by a lack of gut microbial translocation and robust secondary lymphoid Natural Killer (NK) cell responses resulting in absence of chronic inflammation and limited SIV dissemination in lymph nodes (LN) B-cell-follicles, respectively. In a pathogenic infection model (i.e. ART-treated, SIVmac239-infected rhesus macaques; RMs), sequential Interleukin (IL)-21 and interferon (IFN)-alpha therapy generated terminally-differentiated blood NK cells (NKG2a/clowCD16+) with potent HLA-E-restricted activity in response to SIV-ENV peptides in contrast to control RMs, where less differentiated, IFN-gamma+ NK cells predominated. The frequency and cytolytic activity of NKG2a/clowCD16+ NK cells correlated with a reduction of replication-competent SIV in LN during ART and viral rebound delay following analytical treatment interruption. These data demonstrate that AGM-like NK cell differentiation profiles can be rescued in RMs to promote viral clearance in tissues.

2021-02-22 | GSE163442 | GEO

IL-21 and IFNalpha therapy rescues terminally-differentiated NK cells and limit SIV reservoir in ART-treated macaques [cohort2]

2021-02-22 | GSE163441 | GEO

IL-21 and IFNalpha therapy rescues terminally-differentiated NK cells and limit SIV reservoir in ART-treated macaques [cohort1]

2021-02-22 | GSE163440 | GEO

IL-21 and IFNalpha therapy rescues terminally-differentiated NK cells and limit SIV reservoir in ART-treated macaques

Project description:IL-21 and IFNalpha therapy rescues terminally-differentiated NK cells and limit SIV reservoir in ART-treated macaques

| PRJNA686106 | ENA

IL-21 and IFNalpha therapy rescues terminally-differentiated NK cells and limit SIV reservoir in ART-treated macaques [cohort1]

Project description:IL-21 and IFNalpha therapy rescues terminally-differentiated NK cells and limit SIV reservoir in ART-treated macaques [cohort1]

| PRJNA686107 | ENA

IL-21 and IFNalpha therapy rescues terminally-differentiated NK cells and limit SIV reservoir in ART-treated macaques [cohort2]

Project description:IL-21 and IFNalpha therapy rescues terminally-differentiated NK cells and limit SIV reservoir in ART-treated macaques [cohort2]

| PRJNA686108 | ENA

IL-21 and IFNalpha therapy rescues terminally-differentiated NK cells and limit SIV reservoir in ART-treated macaques

Project description:This SuperSeries is composed of the SubSeries listed below.

2021-02-22 | GSE163443 | GEO

IFNalpha-blockade during ART-treated SIV infection lowers tissue vDNA, rescues immune function, and improves overall health

Project description:The induction of type I interferons during acute viral infections drives local and systemic anti-viral responses. However, in chornic virus infection these type I interferon driven responses can be detrimental and can be characterized impaired immune responses (greater T cell exhaustion) and an overall decline in health outcomes. To parse out the role of type I IFN and assess the therapeutic impact of blocking type I IFN, we administered IFN-a blocking antibody to a cohort of SIV-infected ART treated Maccaca mulata. After 9 weeks of treatment (1 injection per week), we observed a significant reduction in the SIV-DNA levels in the lymphnode. This reduced SIV reservoir was seem with a systemic increase in immune cell subset signatures associated with better CD8 T cell function and lower plasma levels of TGF-beta. In addition, upon interruption of ART (16 weeks after ART initiation and after 16 rounds of anti-IFNa infusion), we observed that the non-human primates that underwent type I interferon blockade maintained better overall health and hemoglobin levels.

2021-09-27 | GSE184495 | GEO

IL-21 and IFNα therapy rescues terminally differentiated NK cells and limits SIV reservoir in ART-treated macaques.

Project description: Not available

| S-EPMC8129202 | biostudies-literature

IFNalpha-blockade during ART-treated SIV infection lowers tissue vDNA, rescues immune function, and improves overall health

Project description:IFNalpha-blockade during ART-treated SIV infection lowers tissue vDNA, rescues immune function, and improves overall health

| PRJNA764769 | ENA