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Tumor Immunotherapy

Tumor Immunotherapy

Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.

Molecules and Compounds

Molecules and Compounds

Atoms and Molecules

Overview of Advanced Functional Groups

Overview of Advanced Functional Groups

Functional groups are groups of atoms with specific chemical properties that occur within organic molecules and are sometimes denoted as “R”. Functional groups can “functionalize” a compound by enabling it to adopt different physical and chemical properties.
Types of Advanced Functional Groups
The table below summarizes some of the major functional groups in organic chemistry.

Extraction: Advanced Methods

Extraction: Advanced Methods

Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...

Positive Regulator Molecules

Positive Regulator Molecules

To consistently produce healthy cells, the cell cycle—the process that generates daughter cells—must be precisely regulated.

Sample Preparation for Analysis: Advanced Techniques

Sample Preparation for Analysis: Advanced Techniques

Accurate analysis of complex samples often requires advanced preparation techniques to achieve reliable and reproducible results. Samples containing inorganic or organic materials can be challenging to dissolve or decompose effectively. Standard sample preparation methods include acid digestion, fusion, dry ashing, and wet digestion.
Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...

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Computer-Aided Three-Dimensional Visualization in the Treatment of Locally Advanced Thyroid Cancer

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Recent advances in small molecule based cancer immunotherapy.

Binbin Cheng¹, Wei-En Yuan², Jing Su²

¹School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, China.

European Journal of Medicinal Chemistry

|August 21, 2018

Summary

Small molecule immuno-oncology agents offer improved drug delivery and safety profiles compared to traditional antibodies for cancer treatment. These agents show promise in overcoming antibody limitations and achieving synergistic effects in combination therapies.

Keywords:

Cancer immunotherapy Crystal structures Immuno-oncology Inhibitors Small molecules

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Area of Science:

Oncology
Immunology
Pharmacology

Background:

Cancer immunotherapy increasingly uses antibodies, which have efficacy but poor pharmacokinetics (e.g., penetration, bioavailability) and production challenges.
Antibodies can be immunogenic, leading to side effects and high manufacturing costs.

Purpose of the Study:

To review advances in small molecule immuno-oncology agents.
To highlight their potential to overcome limitations of antibody-based therapies.
To discuss small molecules in clinical trials, preclinical studies, and their target interactions.

Main Methods:

Review of current clinical and preclinical small molecule immuno-oncology studies.
Analysis of reported crystal structures of small molecules and their target proteins.
Elucidation of tumorigenesis mechanisms for key targets (PD1/PD-L1, RORγt, Sting, IDO, TLRs).

Main Results:

Small molecule agents generally exhibit favorable pharmacokinetics (oral bioavailability, tissue penetration, half-life).
Many small molecules demonstrate high selectivity, efficacy, and benign toxicity profiles.
Structural data reveals binding interactions between small molecules and targets like PD1/PD-L1, RORγt, Sting, IDO, and TLRs.

Conclusions:

Small molecule immuno-oncology agents represent a promising alternative and complement to antibody therapies.
Their favorable properties suggest potential for synergistic effects when combined with antibodies.
Further research into small molecules targeting key pathways is crucial for advancing cancer immunotherapy.