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Calreticulin as an Adjuvant In Vivo to Promote Dendritic Cell Maturation and Enhance Antigen-Specific T Lymphocyte Responses against Melanoma. J Immunol Res 2022; 2022:8802004. [PMID: 35983078 PMCID: PMC9381296 DOI: 10.1155/2022/8802004] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 07/08/2022] [Indexed: 11/18/2022] Open
Abstract
An endoplasmic reticulum resident protein, calreticulin (CRT), participates in many cellular processes. CRT is a tumor-associated antigen with an important role in antitumor immunity. Previously, we reported that the recombinant CRT fragment 39-272 (CRT/39-272) exhibited superior immunobiological activity, activating macrophages to release cytokines and promoting dendritic cell (DC) maturation. However, the effect of CRT/39-272 in vivo, especially its adjuvant effect on in vivo antitumor immune responses, was not fully investigated. In this study, we constructed a fusion protein linking CRT/39-272 to an ovalbumin (OVA) peptide (residues 182–297, OVAp) and used the fusion protein (OVAp-CRT) to examine the adjuvant effect of CRT. We investigated whether CRT/39-272 could induce bone marrow-derived DC maturation and strongly promote the proliferation of OVA-specific T cells in vitro. Compared with OVAp, OVAp-CRT induced stronger antigen-specific T lymphocyte responses, including antigen-specific T cell proliferation, interferon-γ secretion, and cytotoxic T lymphocyte responses. OVAp-CRT-immunized mice generated significantly increased OVAp-specific antibody and CD4+/CD8+ memory T cells, which mediated long-term protective effects. OVAp-CRT upregulated CD40, CD80, and CD86 expressions in splenic conventional DCs. Furthermore, OVAp-CRT protected immunized mice against OVA-expressing B16 melanoma cells in vivo. Moreover, mice that were adoptively transferred with OVAp-CRT-pulsed DCs showed inhibited tumor growth and prolonged mouse survival. Our results demonstrate that CRT/39-272 can be used as a potential new adjuvant for tumor vaccines, and this finding may be useful in tumor vaccine development.
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Richert L, Lelièvre JD, Lacabaratz C, Hardel L, Hocini H, Wiedemann A, Lucht F, Poizot-Martin I, Bauduin C, Diallo A, Rieux V, Rouch E, Surenaud M, Lefebvre C, Foucat E, Tisserand P, Guillaumat L, Durand M, Hejblum B, Launay O, Thiébaut R, Lévy Y. T Cell Immunogenicity, Gene Expression Profile, and Safety of Four Heterologous Prime-Boost Combinations of HIV Vaccine Candidates in Healthy Volunteers: Results of the Randomized Multi-Arm Phase I/II ANRS VRI01 Trial. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2022; 208:2663-2674. [PMID: 35613727 DOI: 10.4049/jimmunol.2101076] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 04/03/2022] [Indexed: 06/15/2023]
Abstract
Heterologous prime-boost strategies are of interest for HIV vaccine development. The order of prime-boost components could be important for the induction of T cell responses. In this phase I/II multi-arm trial, three vaccine candidates were used as prime or boost: modified vaccinia Ankara (MVA) HIV-B (coding for Gag, Pol, Nef); HIV LIPO-5 (five lipopeptides from Gag, Pol, Nef); DNA GTU-MultiHIV B (coding for Rev, Nef, Tat, Gag, Env gp160 clade B). Healthy human volunteers (n = 92) were randomized to four groups: 1) MVA at weeks 0/8 + LIPO-5 at weeks 20/28 (M/L); 2) LIPO-5 at weeks 0/8 + MVA at weeks 20/28 (L/M); 3) DNA at weeks 0/4/12 + LIPO-5 at weeks 20/28 (G/L); 4) DNA at weeks 0/4/12 + MVA at weeks 20/28 (G/M). The frequency of IFN-γ-ELISPOT responders at week 30 was 33, 43, 0, and 74%, respectively. Only MVA-receiving groups were further analyzed (n = 62). Frequency of HIV-specific cytokine-positive (IFN-γ, IL-2, or TNF-α) CD4+ T cells increased significantly from week 0 to week 30 (median change of 0.06, 0.11, and 0.10% for M/L, L/M, and G/M, respectively), mainly after MVA vaccinations, and was sustained until week 52. HIV-specific CD8+ T cell responses increased significantly at week 30 in M/L and G/M (median change of 0.02 and 0.05%). Significant whole-blood gene expression changes were observed 2 wk after the first MVA injection, regardless of its use as prime or boost. An MVA gene signature was identified, including 86 genes mainly related to cell cycle pathways. Three prime-boost strategies led to CD4+ and CD8+ T cell responses and to a whole-blood gene expression signature primarily due to their MVA HIV-B component.
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Affiliation(s)
- Laura Richert
- University of Bordeaux, INSERM, Bordeaux Population Health Research Center, UMR1219, Bordeaux, France
- Inria SISTM Team, Talence, France
- CHU de Bordeaux, Service d'Information Médicale, Bordeaux, France
- Vaccine Research Institute, Créteil, France
| | - Jean-Daniel Lelièvre
- Vaccine Research Institute, Créteil, France
- INSERM U955, Université Paris-Est Créteil, Créteil, France
- Groupe Henri-Mondor Albert-Chenevier, AP-HP, Créteil, France
| | - Christine Lacabaratz
- Vaccine Research Institute, Créteil, France
- INSERM U955, Université Paris-Est Créteil, Créteil, France
| | - Lucile Hardel
- University of Bordeaux, INSERM, Bordeaux Population Health Research Center, UMR1219, Bordeaux, France
- Vaccine Research Institute, Créteil, France
| | - Hakim Hocini
- Vaccine Research Institute, Créteil, France
- INSERM U955, Université Paris-Est Créteil, Créteil, France
| | - Aurélie Wiedemann
- Vaccine Research Institute, Créteil, France
- INSERM U955, Université Paris-Est Créteil, Créteil, France
| | - Frédéric Lucht
- CHU de Saint Etienne, Saint-Priest-en-Jarez, France
- Université Jean Monnet and Université de Lyon, Saint-Etienne, France
| | - Isabelle Poizot-Martin
- Aix-Marseille Université, APHM, INSERM, IRD, SESSTIM, Sciences Economiques & Sociales de la Santé & Traitement de l'Information Médicale, ISSPAM, APHM Sainte-Marguerite, Service d'Immuno-Hématologie Clinique, Marseille, France
| | - Claire Bauduin
- University of Bordeaux, INSERM, Bordeaux Population Health Research Center, UMR1219, Bordeaux, France
- Vaccine Research Institute, Créteil, France
| | | | - Véronique Rieux
- Vaccine Research Institute, Créteil, France
- INSERM-ANRS, Paris, France
| | - Elodie Rouch
- University of Bordeaux, INSERM, Bordeaux Population Health Research Center, UMR1219, Bordeaux, France
- Vaccine Research Institute, Créteil, France
| | - Mathieu Surenaud
- Vaccine Research Institute, Créteil, France
- INSERM U955, Université Paris-Est Créteil, Créteil, France
| | - Cécile Lefebvre
- Vaccine Research Institute, Créteil, France
- INSERM U955, Université Paris-Est Créteil, Créteil, France
| | - Emile Foucat
- Vaccine Research Institute, Créteil, France
- INSERM U955, Université Paris-Est Créteil, Créteil, France
| | - Pascaline Tisserand
- Vaccine Research Institute, Créteil, France
- INSERM U955, Université Paris-Est Créteil, Créteil, France
| | - Lydia Guillaumat
- Vaccine Research Institute, Créteil, France
- INSERM U955, Université Paris-Est Créteil, Créteil, France
| | - Mélany Durand
- University of Bordeaux, INSERM, Bordeaux Population Health Research Center, UMR1219, Bordeaux, France
- Inria SISTM Team, Talence, France
- Vaccine Research Institute, Créteil, France
| | - Boris Hejblum
- University of Bordeaux, INSERM, Bordeaux Population Health Research Center, UMR1219, Bordeaux, France
- Inria SISTM Team, Talence, France
- Vaccine Research Institute, Créteil, France
| | - Odile Launay
- CIC 1417 F-CRIN I-REIVAC, INSERM, Hôpital Cochin, AP-HP, Paris, France; and
- Université Paris Descartes, Paris, France
| | - Rodolphe Thiébaut
- University of Bordeaux, INSERM, Bordeaux Population Health Research Center, UMR1219, Bordeaux, France
- Inria SISTM Team, Talence, France
- CHU de Bordeaux, Service d'Information Médicale, Bordeaux, France
- Vaccine Research Institute, Créteil, France
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A Randomized Placebo-Controlled Efficacy Study of a Prime Boost Therapeutic Vaccination Strategy in HIV-1-Infected Individuals: VRI02 ANRS 149 LIGHT Phase II Trial. J Virol 2021; 95:JVI.02165-20. [PMID: 33568510 PMCID: PMC8104102 DOI: 10.1128/jvi.02165-20] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 02/01/2021] [Indexed: 12/29/2022] Open
Abstract
In this placebo-controlled phase II randomized clinical trial, we evaluated the safety and immunogenicity of a therapeutic prime-boost vaccine strategy using a recombinant DNA vaccine (GTU-MultiHIV B clade) followed by a boost vaccination with a lipopeptide vaccine (HIV-LIPO-5) in HIV-infected patients on combined antiretroviral therapy. We show here that this prime-boost strategy is well tolerated, consistently with previous studies in HIV-1-infected individuals and healthy volunteers who received each vaccine component individually. In this placebo-controlled phase II randomized clinical trial, 103 human immunodeficiency virus type 1 (HIV-1)-infected patients under cART (combined antiretroviral treatment) were randomized 2:1 to receive either 3 doses of DNA GTU-MultiHIV B (coding for Rev, Nef, Tat, Gag, and gp160) at week 0 (W0), W4, and W12, followed by 2 doses of LIPO-5 vaccine containing long peptides from Gag, Pol, and Nef at W20 and W24, or placebo. Analytical treatment interruption (ATI) was performed between W36 to W48. At W28, vaccinees experienced an increase in functional CD4+ T-cell responses (P < 0.001 for each cytokine compared to W0) measured, predominantly against Gag and Pol/Env, and an increase in HIV-specific CD8+ T cells producing interleukin 2 (IL-2) and tumor necrosis factor alpha (TNF-α) (P = 0.001 and 0.013, respectively), predominantly against Pol/Env and Nef. However, analysis of T-cell subsets by mass cytometry in a subpopulation showed an increase in the W28/W0 ratio for memory CD8+ T cells coexpressing exhaustion and senescence markers such as PD-1/TIGIT (P = 0.004) and CD27/CD57 (P = 0.044) in vaccinees compared to the placebo group. During ATI, all patients experienced viral rebound, with the maximum observed HIV RNA level at W42 (median, 4.63 log10 copies [cp]/ml; interquartile range [IQR], 4.00 to 5.09), without any difference between arms. No patient resumed cART for CD4 cell count drop. Globally, the vaccine strategy was safe. However, a secondary HIV transmission during ATI was observed. These data show that the prime-boost combination of DNA and LIPO-5 vaccines elicited broad and polyfunctional T cells. The contrast between the quality of immune responses and the lack of potent viral control underscores the need for combined immunomodulatory strategies. (This study has been registered at ClinicalTrials.gov under registration no. NCT01492985.) IMPORTANCE In this placebo-controlled phase II randomized clinical trial, we evaluated the safety and immunogenicity of a therapeutic prime-boost vaccine strategy using a recombinant DNA vaccine (GTU-MultiHIV B clade) followed by a boost vaccination with a lipopeptide vaccine (HIV-LIPO-5) in HIV-infected patients on combined antiretroviral therapy. We show here that this prime-boost strategy is well tolerated, consistently with previous studies in HIV-1-infected individuals and healthy volunteers who received each vaccine component individually. Compared to the placebo group, vaccinees elicited strong and polyfunctional HIV-specific CD4+ and CD8+ T-cell responses. However, these immune responses presented some qualitative defects and were not able to control viremia following antiretroviral treatment interruption, as no difference in HIV viral rebound was observed in the vaccine and placebo groups. Several lessons were learned from these results, pointing out the urgent need to combine vaccine strategies with other immune-based interventions.
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Abstract
Vaccination represents one of the major advances in the field of health. The first vaccines were produced on a rather empirical concept based on the so-called 3I strategy: isolation, inactivation, injection. More recently, protein vaccines have emerged. However, the emergence of new pathogens, the inefficiency of these vaccine strategies to protect against several infections, the need to be able to develop new vaccines quickly and at low cost have led to the development of new types of vaccines. In this context vaccines based on the use of the nucleic acid coding sequences of the antigens of interest (viral vectors, DNA vaccines, RNA vaccines) have been developed in order to improve the efficiency of the currently available vaccines and to propose generic platforms potentially usable against a large number of different pathogens. In addition to the use of these new vaccines, ongoing vaccine research is benefiting from technological developments aimed at optimally delivering vaccines, targeting, for example, dendritic cells, and better characterizing the antigens of interest through the use of vaccines of reverse vaccinology.
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Affiliation(s)
- Jean-Daniel Lelièvre
- Vaccine Research Institute, CHU Henri Mondor, 51 avenue Maréchal de Lattre de Tassigny, 94010 Créteil, France
- Service d’immunologie clinique et maladies infectieuses, CHU Henri Mondor, APHP, 51 avenue Maréchal de Lattre de Tassigny, 94010 Créteil, France
- IMRB, équipe 16, CHU Henri Mondor, 51 avenue Maréchal de Lattre de Tassigny, 94010 Créteil, France
- UPEC, 8, rue du Général Sarrail 94010 Créteil Cedex, France
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