Related Experiment Video
Updated: Aug 4, 2026

10:41
Conjugative Mating Assays for Sequence-specific Analysis of Transfer Proteins Involved in Bacterial Conjugation
Published on: January 4, 2017
Summary
Researchers are identifying the molecules responsible for passive immune transfer using transfer factor (TF). Clinical trials are evaluating TF for treating infections, cancers, and autoimmune diseases, with ongoing reviews of its components and efficacy.
Area of Science:
- Immunology
- Molecular Biology
- Pharmacology
Background:
- Passive transfer of cell-mediated immunity via cell-free materials like transfer factor (TF) is increasingly understood.
- Investigational efforts focus on identifying the specific molecules within TF responsible for its immunomodulatory effects.
- Current research aims to elucidate the mechanisms of action of TF.
Purpose of the Study:
- To critically review existing and recent data on TF components and their impact on immunological and inflammatory responses.
- To evaluate newly developed animal models for studying TF.
- To review clinical studies assessing the efficacy of TF in various disease contexts.
Main Methods:
- Literature review of past and current research on transfer factor.
- Analysis of data from ongoing clinical trials.
- Evaluation of recently developed animal models for TF research.
Main Results:
- Progress in identifying TF molecules and understanding their mechanisms.
- Ongoing clinical trials investigating TF for infections, neoplastic, and autoimmune diseases.
- Review of animal models and clinical data to assess TF efficacy.
Conclusions:
- TF shows potential for treating various diseases.
- Further research is needed to fully understand TF components and their therapeutic applications.
- Clinical trials are crucial for validating TF's efficacy and safety.
Related Concept Videos
Facilitated Transport
The chemical and physical properties of plasma membranes cause them to be selectively permeable. Since plasma membranes have both hydrophobic and hydrophilic regions, substances need to be able to transverse both regions. The hydrophobic area of membranes repels substances such as charged ions. Therefore, such substances need special membrane proteins to cross a membrane successfully. In facilitated transport, also known as facilitated diffusion, molecules and ions travel across a membrane via...
Facilitated Transport
The chemical and physical properties of plasma membranes cause them to be selectively permeable. Since plasma membranes have both hydrophobic and hydrophilic regions, substances need to be able to transverse both regions. The hydrophobic area of membranes repels substances such as charged ions. Therefore, such substances need special membrane proteins to cross a membrane successfully. In facilitated transport, also known as facilitated diffusion, molecules and ions travel across a membrane via...
Energy to Drive Translocation
Mitochondrial protein import is powered by two distinct energy sources: ATP hydrolysis and electrochemical potential across the inner membrane. Newly synthesized precursors are bound by cytosolic chaperones of the Hsp70 family, which guide them to the import receptors on the mitochondrial surface. Utilizing the energy of ATP hydrolysis, Hsp70 chaperones transfer these precursors to the TOM receptors on the mitochondrial outer membrane.
Generally, polypeptides are unfolded by two distinct...
Generally, polypeptides are unfolded by two distinct...
Protein Transport into the Inner Mitochondrial Membrane
Nuclear encoded mitochondrial precursors are imported to the inner membrane in a multistep process involving two separate translocons, TIM22 and TIM23. TIM23 is a cation-selective pore that remains closed by the N terminal segment of the protein. Negative charges on the TIM23 act as a receptor for the incoming precursor, pulling the positively charged matrix-targeting sequence for peptide insertion and translocation.
Transport of mitochondrial precursors across the TIM23 channel is driven by...
Transport of mitochondrial precursors across the TIM23 channel is driven by...
Cotranslational Protein Translocation
Translocation of proteins across membranes is an ancient process that occurs even in bacteria and archaebacteria. In fact, the components of the translocation machinery are still conserved between prokaryotes and eukaryotes.
Sec61 channel partners for cotranslational translocation
During cotranslational translocation, the Sec61 channel partners with the signal recognition particle (SRP), the signal recognition particle receptor (SR), and the ribosomes to transport the nascent polypeptide chain...
Sec61 channel partners for cotranslational translocation
During cotranslational translocation, the Sec61 channel partners with the signal recognition particle (SRP), the signal recognition particle receptor (SR), and the ribosomes to transport the nascent polypeptide chain...
Facilitated Diffusion
The plasma membrane, a critical structure in cellular biology, houses an array of transporters, or carrier proteins, interspersed within its lipid bilayer. These proteins play a crucial role in solute transport through facilitated diffusion, a form of passive diffusion that uses transporters to move the molecules across the membrane.
In this process, substrates such as organic compounds and ions interact with a transporter on one side, triggering conformational changes in proteins that enable...
In this process, substrates such as organic compounds and ions interact with a transporter on one side, triggering conformational changes in proteins that enable...

