Efficient vaccine delivery platform

Aberas vaccine delivery platform – BERA, is based on Outer Membrane Vesicles (OMVs) derived from genetically optimized Gram-negative bacteria. It is as a plug-and-play system where known or novel antigens can be engineered into our delivery platform. Abera’s propriety technology allows for high-density decoration of the OMVs with recombinant antigens and other functional proteins for the development of effective vaccines and immunotherapeutic.

Abera has developed a unique vaccine platform based on Gram-negative bacteria and derived Outer Membrane Vesicles (OMVs) that can be decorated on the surface with multiple antigens of choice at a high density. Abera’s platforms have several unique characteristics as explained on the right.


Using Outer Membrane Vesicles for antigen delivery

Outer Membrane Vesicles (OMVs) are nanosized spherical structures that pinch-off spontaneously from Gram-negative bacteria and can be easily harvested. OMVs have strong intrinsic adjuvant activity and are potent stimulators of humoral and cellular immune responses, which makes them highly suitable as delivery platform for antigens.


Safe vaccination

OMVs cannot replicate and thus have an improved safety profile compared to whole-cell based bacterial vaccines. Moreover, we engineered our OMV-production hosts to circumvent the natural reactogenicity of bacteria. This resulted in a potent, yet entirely safe vaccine delivery platform as demonstrated in certified toxicity studies.


A platform for multivalent vaccines

Abera uses genetically modified Salmonella bacteria with hyper-production properties for . On the surface of the OMVs we can display multiple recombinant antigens and other functional proteins at a very high density to obtain stronger and more varied immune responses. Hence, our vaccines can induce immunity to multiple pathogens or pathogen variants at the same time.


Versatile administration

Vaccines based on Abera’s vaccine delivery platform can be administered nasally and orally for induction of local mucosal responses in addition to systemic immunity. Moreover, elimination at the mucosa blocks transmission of pathogens between individuals.

In addition, needle-free administration has a lower demand for trained medical personnel and equipment, which makes it more cost-efficient compared to injection of the vaccine.

Abera’s platform is also compatible with other administration routes depending on what is suitable for specific indications and pathogens.


Cost-effective and fast production

Many vaccines are complex and expensive to produce with hundreds of process steps, long lead times and expensive materials. In contrast, vaccines based on Abera’s bacterial-based platform can be designed and manufactured in 7-14 days. The platform enables production of large quantities of the vaccine at a low-cost through a well-proven fermentation process and easy harvesting methods. The speed of development enables us to design and try vaccine candidates in a cost-efficient process to find the most suitable candidates for further development.

Do you find our technology interesting and would like to discuss a collaboration? Don’t hesitate to contact us.




BERA is Abera’s highly efficient platform for the display of antigens at the surface of outer membrane vesicles (OMVs). OMVs are small vesicles that naturally shed from Gram-negative bacteria. Unlike the parental bacteria, OMVs cannot replicate and thus have an improved safety profile.