SCIENCE & TECHNOLOGY

The Science of Cellular Therapeutics


Defining the Biological Product

Cell therapies are inherently complex


Unlike traditional pharmaceutical compounds that can often be defined by a specific molecular structure, cellular products consist of dynamic living populations whose characteristics may change in response to their biological and manufacturing environment.

Understanding the product therefore requires multidimensional characterization.

Allogeneic UC-MSC Platform

A central area of the TISTR and Vega Wellness development program is allogeneic umbilical cord-derived mesenchymal stromal/stem cell technology.

Umbilical cord tissue provides a source of mesenchymal stromal cells that can be isolated, expanded and characterized within controlled manufacturing processes.

Development of a reproducible allogeneic platform requires control across:

Donor Qualification
     ↓
Tissue Procurement
     ↓
Cell Isolation
     ↓
 Cell Banking
     ↓
   Expansion
     ↓
  Harvesting
     ↓
  Formulation
      ↓
 Quality Control
      ↓
     Release


Variability introduced at any stage may potentially influence the final cellular product.

Cellular Identity

Cellular Integrity

Cellular Integrity

Cell identity is established through a combination of biological characteristics rather than cell count alone.

Depending on the stage and purpose of development, characterization strategies may incorporate:

  • Phenotypic marker profiling
  • Morphological evaluation
  • Growth characteristics
  • Differentiation-associated testing
  • Functional characterization

Cellular Integrity

Cellular Integrity

Cellular Integrity

Manufacturing processes must preserve appropriate cellular characteristics during expansion.

Relevant parameters may include:

  • Viability
  • Population doubling
  • Passage number
  • Senescence
  • Chromosomal stability
  • Cellular morphology
  • Functional characteristics

Potency

Cellular Integrity

Potency

High viability is important but viability does not by itself demonstrate biological function.

Potency assays are intended to evaluate measurable biological activity associated with a product’s proposed mechanism or functional characteristics.

Depending on the investigational application, research may evaluate biological functions associated with:

  • Immunomodulatory activity
  • Cell-signaling pathways
  • Paracrine signaling
  • Cytokine modulation
  • Tissue-supportive mechanisms
  • Extracellular-vesicle signaling

Potency development is therefore an important component of advanced cellular-product characterization.