The problem with fragile payloads
Nucleic acids and proteins are easily broken down, and many cannot cross a cell membrane on their own. Left unprotected, most of a dose never reaches its target.
Delivery is therefore not a finishing touch. For many payloads it decides whether the idea works at all.
What a lipid shell does
A liposome is a lipid shell around a watery core. It shields the payload in transit and can be tuned to release it where it is needed. Lipid nanoparticles follow a related idea, with a different internal structure suited to nucleic acids.
Because the shell is made of lipids, the same basic approach can be adapted for oral, topical and research uses.
Choosing the shell
Choosing lipids is a balance between protection, release and tolerability. A shell that protects strongly may release slowly, and a gentle one may be less stable in storage.
That is why formulation is developed alongside the payload rather than after it, and why stability should be part of the first conversation, not an afterthought.
- A lipid shell protects fragile payloads and helps them reach cells.
- Liposomes and lipid nanoparticles are related but not identical.
- Protection, release and tolerability must be balanced for each payload.
Common questions
What is the difference between a liposome and a lipid nanoparticle?
Both are lipid-based carriers. A liposome has a watery core inside a lipid bilayer, while a lipid nanoparticle has a more complex internal structure, often used for nucleic acids.
Can liposomes carry proteins as well as RNA?
Yes. Liposomes can enclose proteins, nucleic acids and small molecules, although each payload needs its own formulation work.
Why does stability matter so early?
A formulation that looks good on day one but changes in storage is not ready to use, so stability data should shape design from the start.
