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← Older revision		Revision as of 00:59, 27 February 2025
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	[[Category:Chemistry]]		[[Category:Chemistry]]
	[[Category:Bioconjugation]]		[[Category:Bioconjugation]]
			<gallery>
			File:Ibritumomab_tiuxetan_structure_v01.svg\|Ibritumomab tiuxetan structure
			File:Bioconjugation_strategies_for_lysine_residues.tif\|Bioconjugation strategies for lysine residues
			File:Bioconjugation_strategies_for_cysteine_residues.tif\|Bioconjugation strategies for cysteine residues
			File:Bioconjugation_strategies_for_tyrosine_residues.tif\|Bioconjugation strategies for tyrosine residues
			File:Figure_4._Bioconjugation_strategies_for_N-terminus.tif\|Bioconjugation strategies for N-terminus
			File:Figure_5._Bioconjugation_strategies_for_C-terminus.tif\|Bioconjugation strategies for C-terminus
			File:Figure_6._Bioconjugation_strategies_for_targeting_ketones_and_aldehydes.jpg\|Bioconjugation strategies for targeting ketones and aldehydes
			File:Figure_7._Nucleophilic_catalysis_of_oxime_ligation.jpg\|Nucleophilic catalysis of oxime ligation
			</gallery>

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Bioconjugation

Bioconjugation is a chemical strategy used to form a stable covalent link between two molecules, one of which is typically a biomolecule. This process is crucial in the development of various biotechnological and therapeutic applications, including the creation of [[antibody-drug conjugates]], [[biosensors]], and [[imaging agents]].

== Overview ==
Bioconjugation involves the attachment of a biomolecule, such as a [[protein]], [[nucleic acid]], or [[carbohydrate]], to another molecule, which can be a small synthetic compound, another biomolecule, or a [[nanoparticle]]. The goal is to combine the unique properties of each component to create a new entity with enhanced or novel functionalities.

== Techniques ==
Several techniques are employed in bioconjugation, each with its own advantages and limitations. Some of the most common methods include:

=== Amide Bond Formation ===
Amide bond formation is one of the most widely used bioconjugation techniques. It involves the reaction between a carboxylic acid group and an amine group to form an amide bond. This method is often used to attach peptides to other molecules.

=== Click Chemistry ===
[[Click chemistry]] is a class of bioconjugation reactions that are highly efficient, selective, and occur under mild conditions. The most popular click chemistry reaction is the copper-catalyzed azide-alkyne cycloaddition (CuAAC), which forms a stable triazole linkage.

=== Thiol-Maleimide Reaction ===
The thiol-maleimide reaction is a specific and efficient method for conjugating molecules containing thiol groups, such as cysteine residues in proteins, to maleimide-functionalized compounds.

=== Enzymatic Conjugation ===
Enzymatic methods utilize enzymes to catalyze the formation of covalent bonds between biomolecules. These methods are often highly specific and can occur under physiological conditions.

== Applications ==
Bioconjugation has a wide range of applications in various fields:

=== Therapeutics ===
In therapeutics, bioconjugation is used to create [[antibody-drug conjugates]] (ADCs), which are designed to deliver cytotoxic drugs specifically to cancer cells, minimizing damage to healthy tissues.

=== Diagnostics ===
Bioconjugation is employed in the development of [[biosensors]] and diagnostic assays, where biomolecules are conjugated to reporter molecules to detect specific analytes.

=== Imaging ===
In medical imaging, bioconjugation is used to attach imaging agents to targeting molecules, allowing for the visualization of specific tissues or disease sites.

== Challenges ==
Despite its many applications, bioconjugation faces several challenges, including:

* '''Specificity:''' Achieving selective conjugation without affecting the biological activity of the biomolecule.
* '''Stability:''' Ensuring the stability of the conjugate under physiological conditions.
* '''Scalability:''' Developing methods that are scalable for industrial applications.

== Also see ==
* [[Antibody-drug conjugate]]
* [[Click chemistry]]
* [[Biosensor]]
* [[Protein engineering]]

{{Biotechnology}}
{{Chemistry}}

[[Category:Biotechnology]]
[[Category:Chemistry]]
[[Category:Bioconjugation]]

Bioconjugation - Revision history

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