A Randomized, Double-blind, Placebo-controlled Phase III Clinical Trial to Evaluate Efficacy, Safety and Immunogenicity of LIBP Recombinant COVID-19 Vaccine (CHO Cell, NVSI-06-09) and BIBP Recombinant COVID-19 Vaccine (CHO Cell, NVSI-06-09) in Healthy Population Aged 18 and Above

This clinical trial adopts a randomized, double-blind and placebo-controlled design.
A total of 16000 participants are planned to be enrolled, of which, Cohort 1: 15000 participants vaccinated with ≥2 doses of inactivated COVID-19 vaccine for ≥6 months will be randomly administered at ratio of 1:1:1 with 1 dose of LIBP-Rec-Vaccine, BIBP-Rec-Vaccine or placebo intramuscularly to the deltoid muscle of upper arm.
Cohort 2: 1000 participants vaccinated with ≥2 doses of mRNA COVID-19 vaccine for ≥6 months will be randomly administered at ratio of 1:1 with 1 dose of LIBP-Rec-Vaccine or BIBP-Rec-Vaccine intramuscularly to the deltoid muscle of upper arm.

Start Date04 Nov 2022

Sponsor / Collaborator

Lanzhou Institute of Biological Products Co. Ltd.

[+2]

NCT05293548 / Active, not recruitingPhase 2

A Randomized, Controlled Clinical Trial on Sequential Immunization of Recombinant COVID-19 Vaccine (CHO Cell, NVSI-06-09) and Inactivated COVID-19 Vaccine (Vero Cell) in Population Aged 18 Years and Above

A total of 516 healthy subjects aged 18 years and above who have been vaccinated with 2 doses/3 doses of inactivated COVID-19 vaccine, will be enrolled, and randomly assigned to experimental group and control group in a 1:1 ratio, with 258 subjects in each sequential group.

Start Date25 May 2022

Sponsor / Collaborator

Lanzhou Institute of Biological Products Co. Ltd.

[+2]

NCT05105295 / Unknown statusPhase 4

Immunogenicity and Safety of a Third Dose and Immune Persistence of BBIBP-Corv Vaccine in People With Human Immunodeficiency Virus Infected

Evaluation of immunogenicity, safety and persistence of the subjects with HIV infected received the third dose of inactivated COVID-19 vaccine .

Start Date01 Dec 2021

Sponsor / Collaborator

China National Biotec Group Co., Ltd.

[+1]

100 Clinical Results associated with Recombinant COVID-19 Vaccine (CHO cell)

100 Translational Medicine associated with Recombinant COVID-19 Vaccine (CHO cell)

100 Patents (Medical) associated with Recombinant COVID-19 Vaccine (CHO cell)

Literatures (Medical) associated with Recombinant COVID-19 Vaccine (CHO cell)

06 Jan 2024·Zhonghua yu fang yi xue za zhi [Chinese journal of preventive medicine]

[Immunogenicity, safety and immune persistence of the sequential booster with the recombinant protein-based COVID-19 vaccine (CHO cell) in healthy people aged 18-84 years].

Article

Author: Xing, B ; Cao, Y F ; Zhang, T Q ; Liao, Y T ; Hu, X S ; Yang, J ; Yao, D Y ; Lyu, H K ; Liang, Z Z ; Wang, X L ; Chen, Y P ; Ding, F

Objective: To evaluate the immunogenicity, safety, and immune persistence of the sequential booster with the recombinant protein-based COVID-19 vaccine (CHO cell) in healthy people aged 18-84 years. Methods: An open-label, multi-center trial was conducted in October 2021. The eligible healthy individuals, aged 18-84 years who had completed primary immunization with the inactivated COVID-19 vaccine 3 to 9 months before, were recruited from Shangyu district of Shaoxing and Kaihua county of Quzhou, Zhejiang province. All participants were divided into three groups based on the differences in prime-boost intervals: Group A (3-4 months), Group B (5-6 months) and Group C (7-9 months), with 320 persons per group. All participants received the recombinant COVID-19 vaccine (CHO cell). Blood samples were collected before the vaccination and after receiving the booster at 14 days, 30 days, and 180 days for analysis of GMTs, antibody positivity rates, and seroconversion rates. All adverse events were collected within one month and serious adverse events were collected within six months. The incidences of adverse reactions were analyzed after the booster. Results: The age of 960 participants was (52.3±11.5) years old, and 47.4% were males (455). The GMTs of Groups B and C were 65.26 (54.51-78.12) and 60.97 (50.61-73.45) at 14 days after the booster, both higher than Group A's 44.79 (36.94-54.30) (P value<0.05). The GMTs of Groups B and C were 23.95 (20.18-28.42) and 27.98 (23.45-33.39) at 30 days after the booster, both higher than Group A's 15.71 (13.24-18.63) (P value <0.05). At 14 days after the booster, the antibody positivity rates in Groups A, B, and C were 91.69% (276/301), 94.38% (302/320), and 93.95% (295/314), respectively. The seroconversion rates in the three groups were 90.37% (272/301), 93.75% (300/320), and 93.31% (293/314), respectively. There was no significant difference among these rates in the three groups (all P values >0.05). At 30 days after the booster, antibody positivity rates in Groups A, B, and C were 79.60% (238/299), 87.74% (279/318), and 90.48% (285/315), respectively. The seroconversion rates in the three groups were 76.92% (230/299), 85.85% (273/318), and 88.25% (278/315), respectively. There was a significant difference among these rates in the three groups (all P values <0.001). During the sequential booster immunization, the incidence of adverse events in 960 participants was 15.31% (147/960), with rates of about 14.38% (46/320), 17.50% (56/320), and 14.06% (45/320) in Groups A, B, and C, respectively. The incidence of adverse reactions was 8.02% (77/960), with rates of about 7.50% (24/320), 6.88% (22/320), and 9.69% (31/320) in Groups A, B, and C, respectively. No serious adverse events related to the booster were reported. Conclusion: Healthy individuals aged 18-84 years, who had completed primary immunization with the inactivated COVID-19 vaccine 3 to 9 months before, have good immunogenicity and safety profiles following the sequential booster with the recombinant COVID-19 vaccine (CHO cell).

01 Dec 2023·Immunity, Inflammation and Disease

Mucosal response of inactivated and recombinant COVID‐19 vaccines in Congolese individuals

Article

Author: Heinzel, Constanze ; Kreidenweiss, Andrea ; Fendel, Rolf ; Mbama Ntabi, Jacques D. ; Kremsner, Peter G. ; Lissom, Abel ; Ntoumi, Francine ; Mouzinga, Freisnel H. ; Ngumbi, Etienne ; Djontu, Jean C. ; Batchi‐Bouyou, Armel L.

AbstractBackgroundThe efficacy of immunization against an airborne pathogen depends in part on its ability to induce antibodies at the major entry site of the virus, the mucosa. Recent studies have revealed that mucosal immunity is poorly activated after vaccination with messenger RNA vaccines, thus failing in blocking virus acquisition upon its site of initial exposure. Little information is available about the induction of mucosal immunity by inactivated and recombinant coronavirus disease 2019 (COVID‐19) vaccines. This study aims to investigate this topic.MethodsSaliva and plasma samples from 440 healthy Congolese were collected including (1) fully vaccinated 2 month postvaccination with either an inactivated or a recombinant COVID‐19 vaccine and (2) nonvaccinated control group. Total anti‐severe acute respiratory syndrome coronavirus 2 receptor‐binding domain IgG and IgA antibodies were assessed using in‐house enzyme‐linked immunosorbent assays for both specimens.FindingsAltogether, the positivity of IgG was significantly higher in plasma than in saliva samples both in vaccinated and nonvaccinated control groups. Inversely, IgA positivity was slightly higher in saliva than in plasma of vaccinated group. The overall IgG and IgA levels were respectively over 103 and 14 times lower in saliva than in plasma samples. We found a strong positive correlation between IgG in saliva and plasma also between IgA in both specimens (r = .70 for IgG and r = .52 for IgA). Interestingly, contrary to IgG, the level of salivary IgA was not different between seropositive control group and seropositive vaccinated group. No significant difference was observed between recombinant and inactivated COVID‐19 vaccines in total IgG and IgA antibody concentration release 2 months postvaccination both in plasma and saliva.ConclusionInactivated and recombinant COVID‐19 vaccines in use in the Republic of Congo poorly activated mucosal IgA‐mediated antibody response 2 months postvaccination.

01 Aug 2023·Antiviral research

Intranasal delivery of an adenovirus-vector vaccine co-expressing a modified spike protein and a genetic adjuvant confers lasting mucosal immunity against SARS-CoV-2.

Article

Author: Park, Jang Hyun ; Ku, Keun Bon ; Kang, Byeong Hoon ; Kim, Kyun-Do ; Kim, Hyeon Cheol ; Jung, Hi Eun ; Lee, Heung Kyu

The ongoing COVID-19 pandemic caused by SARS-CoV-2 infection has threatened global health. Since the first case of infection was reported in December 2019, SARS-CoV-2 has rapidly spread worldwide and caused millions of deaths. As vaccination is the best way to protect the host from invading pathogens, several vaccines have been developed to prevent the infection of SARS-CoV-2, saving numerous lives thus far. However, SARS-CoV-2 constantly changes its antigens, resulting in escape from vaccine-induced protection, and the longevity of immunity induced by vaccines remains an issue. Additionally, traditional intramuscular COVID-19 vaccines are insufficient at evoking mucosal-specific immune responses. Because the respiratory tract is the primary route of SARS-CoV-2 entry, the need for mucosal vaccines is strong. Using an adenoviral (Ad) vector platform, we generated Ad5-S.Mod, a recombinant COVID-19 vaccine that encodes modified-spike (S) antigen and the genetic adjuvant human CXCL9. Intranasal delivery of Ad5-S.Mod elicited superior airway humoral and T-cell responses over traditional intramuscular vaccines and protected mice from lethal SARS-CoV-2 infection. cDC1 cells were required for the generation of antigen-specific CD8⁺ T-cell responses and CD8⁺ tissue-resident memory T-cell development in intranasal Ad5-S.Mod vaccinated mice. Furthermore, we confirmed the efficacy of the intranasal Ad5-S.Mod vaccine in terms of transcriptional changes and identified lung macrophages as a key supporter of maintenance of lung-resident memory T and B cells. Our study demonstrates Ad5-S.Mod has the potential to confer protective immunity against SARS-CoV-2 and that lung macrophages support the maintenance of vaccine-induced tissue-resident memory lymphocytes.

100 Deals associated with Recombinant COVID-19 Vaccine (CHO cell)

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Indication	Country/Location	Organization	Date
COVID-19	AE	Sinopharm Zhongsheng Biotechnology Research Institute Co., Ltd	12 Dec 2022

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