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Related Concept Videos

Conjugated Proteins02:50

Conjugated Proteins

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Simple proteins and protein complexes contain only amino acids. In contrast, many other proteins, called conjugated proteins, covalently bond with non-protein moieties.
Nucleoproteins are protein complexes that contain nucleic acids, categorized as deoxyribonucleoproteins (DNPs) or ribonucleoproteins (RNPs) respectively. The nucleosome is a typical example of a DNP where nuclear DNA is associated with histone proteins. The major antigen for the Covid-19 virus SARS-CoV is an RNP that is critical...
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Drugs target macromolecules to modify ongoing cellular processes. Primary drug targets include receptors, ion channels, transporters, and enzymes.
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Conjugation01:19

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Conjugation is a form of horizontal gene transfer that primarily occurs in bacteria and some archaea, promoting genetic diversity and adaptation. Bacteria can acquire resistance genes through conjugative plasmids, allowing them to survive antibiotic treatments that would otherwise be lethal. This process involves direct contact between cells through specialized structures such as the sex pilus and is mediated by conjugative plasmids, including the F (fertility) factor.Conjugation requires...
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Mechanism of Conjugation01:19

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Bacterial conjugation is a mechanism of horizontal gene transfer that enables the exchange of genetic material between bacterial cells through direct contact. This process is facilitated by a donor cell carrying a conjugative plasmid, which encodes genes necessary for pilus formation, DNA replication, and transfer. The conjugative plasmid plays a central role in initiating and executing the transfer of genetic material.The tra region of the conjugative plasmid encodes proteins responsible for...
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Clinically Relevant Drug Product Specifications: Methods of Establishment01:29

Clinically Relevant Drug Product Specifications: Methods of Establishment

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Product specifications define the acceptable quality of a pharmaceutical product by ensuring identity, purity, potency, and strength. These specifications serve as benchmarks during development, manufacturing, and post-approval quality control. Clinically relevant specifications are particularly important because they directly relate to a drug's safety and efficacy in clinical use.Dissolution studies are critical biopharmaceutic tools that link in vitro behavior to in vivo performance. They...
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Related Experiment Video

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Conjugative Mating Assays for Sequence-specific Analysis of Transfer Proteins Involved in Bacterial Conjugation
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Bisphosphonate conjugation for bone specific drug targeting.

Kristen B Farrell1, Alexander Karpeisky1, Douglas H Thamm2

  • 1MBC Pharma Inc., 12635 East Montview Blvd., Aurora, CO 80045-0100, United States of America.

Bone Reports
|July 12, 2018
PubMed
Summary

Bisphosphonate conjugates offer targeted drug delivery to bone, improving treatments for bone disorders and cancer. This approach enhances drug localization by utilizing bone

Keywords:
BisphosphonatesBone-targetingCancer induced bone diseaseDrug conjugatesInfectionOsteomyelitis

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Area of Science:

  • Bone Biology and Therapeutics
  • Drug Delivery Systems
  • Oncology

Background:

  • Bone disorders and cancers present treatment challenges due to difficulties in drug delivery.
  • Targeting drugs to bone is crucial for effective therapeutic interventions.
  • Bisphosphonates are a class of molecules that bind to hydroxyapatite in bone.

Purpose of the Study:

  • To review the use of bisphosphonate conjugates for bone-targeted therapies.
  • To discuss bisphosphonate-based imaging agents, nanoparticles, and drug conjugates.
  • To explore linker design and the progress of bisphosphonate conjugate research.

Main Methods:

  • Review of existing literature on bisphosphonate conjugates and bone-targeting strategies.
  • Analysis of bisphosphonate binding to hydroxyapatite for drug localization.
  • Discussion of conjugation techniques for delivering antineoplastic agents and other drugs.

Main Results:

  • Bisphosphonates effectively target bone, inhibiting osteoclast resorption and treating bone disorders.
  • Bisphosphonate conjugates show success in treating osteoporosis, bone neoplasms, and refining bone imaging.
  • Ongoing research expands the potential of bisphosphonate-based therapeutics.

Conclusions:

  • Bisphosphonate conjugation represents a promising strategy for bone-targeted drug delivery.
  • This approach has significant implications for treating bone diseases and cancers.
  • Further research is expanding the clinical applications of bisphosphonate-based therapies.