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Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

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Cell Adhesion Molecules - Types and Functions

Cell adhesion molecules (CAMs) are pivotal to multicellularity and the coordinated functioning of tissues and organ systems. They enable physical interactions between cells and provide mechanical strength to tissues. They also function as receptors for signal transmission across the plasma membrane. The CAMs are broadly classified into four families - integrins, cadherins, selectins, and immunoglobulin-like CAMs (IgCAMs).
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Immunoglobulin-like cell adhesion molecules or Ig-CAMs are a versatile group of cell surface glycoproteins belonging to the immunoglobulin protein superfamily. Ig-CAMs possess the characteristic immunoglobulin protein domains and other domains such as the fibronectin type III domain. The Ig domains are glycosylated to varying degrees in different Ig-CAMs.
Ig-CAMs exhibit either homophilic binding (to other Ig-CAMs) or heterophilic binding (to other ligands such as integrins). While most Ig-CAMs...
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Improving a drug's stability in the gastrointestinal (GI) tract is paramount for enhancing its bioavailability and therapeutic effectiveness. Various strategies are employed to protect the drug from the harsh gastric milieu and to ensure its release and absorption at the desired site within the GI tract.Polymer coatings are one such method used to shield drugs from the stomach's acidic environment. By preventing premature drug release, these coatings improve the bioavailability of unstable...
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Stimuli-activated drug delivery systems are designed to release drugs in response to specific physical, chemical, or biological stimuli. These systems often utilize hydrogels—three-dimensional, hydrophilic polymer networks capable of swelling in aqueous environments and retaining significant fluid volumes. Upon exposure to particular stimuli, these hydrogels undergo structural transitions that allow the embedded drug to be released. Due to this adaptive behavior, such systems are also called...
Site-Targeted Drug Delivery Systems: Polymeric Carriers01:24

Site-Targeted Drug Delivery Systems: Polymeric Carriers

Polymeric carriers enhance targeted drug delivery by increasing efficacy while minimizing off-target effects. These carriers comprise a biodegradable polymeric backbone integrated with functional elements that enable targeting, improve physicochemical properties, and regulate drug release.Targeting MechanismsThe targeting ability of polymeric carriers is mediated by a homing device, which is a molecular recognition component designed to selectively bind to specific tissues or cells. Monoclonal...

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Biomimetic Materials to Characterize Bacteria-host Interactions
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Immunomodulatory bioadhesive technologies.

Xiaoyi Lan1, Evan Johnston2, Tianqin Ning3

  • 1Department of Surgery, McGill University, 1650 Cedar Avenue, Montreal, Quebec, H3G 1A3, Canada; Department of Mechanical Engineering, McGill University, 817 Sherbrooke St W, Montreal, Quebec, H3A 0C3, Canada.

Biomaterials
|March 29, 2025
PubMed
Summary
This summary is machine-generated.

Immunomodulatory bioadhesives combine adhesion and immune modulation for better wound healing and cancer therapy. These advanced materials offer improved outcomes over traditional methods, with ongoing research addressing stability challenges.

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Area of Science:

  • Biomaterials Science
  • Immunology
  • Regenerative Medicine

Background:

  • Bioadhesives are crucial in medicine and engineering for wound care, tissue engineering, and surgery.
  • They offer advantages over sutures and staples, including less tissue damage and improved healing.
  • Recent advancements integrate immunoengineering, creating bioadhesives that modulate local immune responses.

Purpose of the Study:

  • To review the interplay between bioadhesion and immunomodulation in advanced biomaterials.
  • To highlight the chemical and physical strategies for modulating immune responses.
  • To discuss applications in wound healing, tissue regeneration, and cancer therapy.

Main Methods:

  • Literature review focusing on the mechanobiological coupling of bioadhesion and immunomodulation.
  • Analysis of strategies for immune response modulation via bioadhesives.
  • Examination of current and potential applications in clinical settings.

Main Results:

  • Immunomodulatory bioadhesives demonstrate dual functionality, benefiting wound management and cancer treatment.
  • These materials can reduce inflammation in wounds and implants or enhance immune responses for cancer therapy.
  • Synergy between bioadhesion and immunoengineering offers novel therapeutic avenues.

Conclusions:

  • Immunomodulatory bioadhesives hold significant promise for diverse medical applications.
  • Further research is needed to overcome challenges in long-term stability and effectiveness.
  • Harnessing bioadhesion and immunomodulation can revolutionize treatments in regenerative medicine and oncology.