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Related Concept Videos

Regulation of Nuclear Protein Sorting01:45

Regulation of Nuclear Protein Sorting

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Nuclear protein sorting regulates nucleus composition and gene expression, crucial for determining the fate of a eukaryotic cell. Hence, the entry and exit of molecules across the nuclear envelope is a tightly controlled process. Nuclear protein sorting can be inhibited by one of the following ways: 1) masking cargo signal sequences, 2) modifying the nuclear receptor's affinity for cargo, 3) controlling the nuclear pore size, 4) retaining the cargo during its transit to the cytosol or the...
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In eukaryotes, transcription and translation are compartmentalized; an mRNA is first synthesized in the nucleus and then selectively transported to the cytoplasm for protein synthesis. Before transport, a pre-mRNA undergoes several steps of post-transcriptional modifications including splicing, 5' capping, and the addition of a poly-adenine tail. Various proteins bind to the pre-mRNA during these modifications. The mRNA transport takes place with the help of multiple proteins playing...
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Membrane Fluidity01:26

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Membrane fluidity is explained by the fluid mosaic model of the cell membrane, which describes the plasma membrane structure as a mosaic of components—including phospholipids, cholesterol, proteins, and carbohydrates—that gives the membrane a fluid character.
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Directing Proteins to the Rough Endoplasmic Reticulum01:34

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The organelle-specific signaling sequences direct proteins synthesized in the cytosol to their final destination like ER, mitochondria, peroxisomes, etc. Some of the proteins directed to ER are then trafficked via vesicles to other organelles within the cell or the extracellular environment through the Golgi complex. For example, the rough ER synthesizes soluble proteins for transportation to the lysosomes or secretion out of the cell. It can also synthesize transmembrane proteins that can...
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Before mRNAs are exported to the cytoplasm, it is crucial to check each mRNA for structural and functional integrity. Eukaryotic cells use several different mechanisms, collectively known as mRNA surveillance, to look for irregularities in mRNAs. Irregular or aberrant mRNA are rapidly degraded by various enzymes. If a defective mRNA escapes the surveillance, it would be translated into a protein which would either be non-functional or not function properly. One of the primary irregularities in...
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RNA editing is a post-transcriptional modification where a precursor mRNA (pre-mRNA) nucleotide sequence is changed by base insertion, deletion, or modification. The extent of RNA editing varies from a few hundred bases, in mitochondrial DNA of trypanosomes, to a just single base, in nuclear genes of mammals. Even a single base change in the pre-mRNA can convert a codon for one amino acid into the codon for another amino acid or a stop codon. This type of re-coding can significantly affect the...
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Related Experiment Video

Updated: Jan 11, 2026

Preparation, Purification, and Use of Fatty Acid-containing Liposomes
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Resolving the mRNA Encapsulation-Release Trade-off via Compensatory Forces in Engineered Ionizable Lipids.

Weixiang Gao1,2, Kang An1,2, Yishan Ma1,2

  • 1State Key Laboratory of Biopharmaceutical Preparation and Delivery, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China.

Advanced Materials (Deerfield Beach, Fla.)
|November 17, 2025
PubMed
Summary
This summary is machine-generated.

Engineered lipid nanoparticles (LNPs) overcome mRNA delivery challenges by balancing encapsulation and release. This innovation enhances mRNA translation for improved cancer therapy and gene editing applications.

Keywords:
compensatory forcegene editinglipid nanoparticlemRNA vaccineshort‐range interaction

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Generation of Cationic Nanoliposomes for the Efficient Delivery of In Vitro Transcribed Messenger RNA
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Area of Science:

  • Biotechnology
  • Materials Science
  • Molecular Biology

Background:

  • Messenger RNA (mRNA) delivery via lipid nanoparticles (LNPs) faces a key challenge: balancing stable encapsulation with efficient intracellular release.
  • This trade-off limits the therapeutic potential of mRNA-based treatments.

Purpose of the Study:

  • To engineer LNPs that optimize mRNA encapsulation and intracellular release through compensatory force engineering.
  • To develop a computational-experimental framework for designing ionizable lipids (ILs) with specific short-range interaction motifs.

Main Methods:

  • Developed a "contact number" metric using a computational-experimental framework to guide LNP design.
  • Incorporated short-range interaction motifs (urea, carbamate) into ionizable lipid structures.
  • Evaluated LNP performance in mRNA translation, T cell responses, tumor inhibition, and gene editing efficiency.

Main Results:

  • Engineered LNPs (OT13-LNPs) demonstrated optimal mRNA encapsulation and enhanced endosomal escape, leading to improved mRNA translation.
  • OT13-LNPs showed a 1.7-fold increase in antigen-specific T cell responses and 77.9% tumor inhibition in melanoma models.
  • In hepatic gene editing, OT13-LNPs achieved comparable on-target editing efficiency to commercial LNPs but a significantly stronger silencing effect (>90% vs. ~58% TTR reduction).

Conclusions:

  • Compensatory force engineering offers a promising strategy for developing next-generation mRNA therapeutics.
  • The developed LNP system shows potential for applications in oncology, gene editing, and infectious diseases.