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Updated: Jan 5, 2026

Preparation and Gene Modification of Nonhuman Primate Hematopoietic Stem and Progenitor Cells

Preparation and Gene Modification of Nonhuman Primate Hematopoietic Stem and Progenitor Cells

Published on: February 15, 2019

Viagra Enables Efficient, Single-Day Hematopoietic Stem Cell Mobilization.

Stephanie Smith-Berdan¹, Alyssa Bercasio¹, Smrithi Rajendiran¹

¹Institute for the Biology of Stem Cells, Department of Biomolecular Engineering, University of California, 1156 High Street, Santa Cruz, CA 95064, USA.

Stem Cell Reports

|October 15, 2019

Summary

Hematopoietic stem cell (HSC) transplantation is vital for treating blood disorders. A new, single-day method using Viagra and AMD3100 efficiently mobilizes HSCs, offering a promising alternative to current lengthy procedures.

Keywords:

CXCR4 antagonist FDA-approved drugs HSC mobilization Viagra curative treatment hematopoietic stem cell transplantation plerixafor sildenafil citrate vascular integrity vasodilators

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Area of Science:

Hematology
Pharmacology
Cell Biology

Background:

Hematopoietic stem cell (HSC) transplantation is a critical therapy for blood and immune disorders.
Current methods for collecting donor HSCs are inefficient and limit treatment accessibility.
Previous research indicated that modulating vascular integrity can induce HSC mobilization.

Purpose of the Study:

To investigate if FDA-approved vasodilators can effectively mobilize HSCs.
To evaluate a novel, rapid HSC mobilization regimen for potential clinical use.

Main Methods:

Testing the efficacy of Viagra (sildenafil citrate) and AMD3100 in mobilizing HSCs.
Comparing the mobilization levels achieved with a novel 2-hour regimen to the standard 5-day G-CSF regimen.

Main Results:

A single oral dose of Viagra combined with a single injection of AMD3100 rapidly mobilized HSCs.
The 2-hour regimen achieved HSC mobilization levels comparable to the standard 5-day G-CSF treatment.
This demonstrates the potential of FDA-approved drugs for efficient HSC mobilization.

Conclusions:

Vascular integrity plays a crucial role in regulating HSC trafficking.
A single-day regimen using Viagra and AMD3100 is an attractive and efficient method for HSC mobilization.
This approach offers a promising alternative for improving HSC transplantation therapies.