Transient low pH treatment enhances infection of lentiviral vector pseudotypes with a targeting Sindbis envelope

Virology. 2006 Nov 10;355(1):71-81. doi: 10.1016/j.virol.2006.07.015. Epub 2006 Aug 14.


Efficient transduction of primary hematopoietic cell types by oncoretroviral vectors and lentiviral vectors with a variety of different envelope pseudotypes has proven to be difficult. We recently developed a lentiviral vector based upon a modified Sindbis virus envelope that allows targeted transduction via antibody recognition to specific cells in unfractionated cell populations. However, similar to other envelope pseudotypes, the utility of this vector for some primary hematopoietic cells was limited by low transduction efficiencies. Here, we report that transient treatment of cells with low pH culture medium immediately following infection results in marked enhancements in transduction efficiency for primary hematopoietic cells. In combination with antibody directed targeting, this simple technique expands the utility of targeting transduction to specific cells in mixed populations of primary cells.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Cell Line
  • Cells, Cultured
  • Culture Media / chemistry
  • Flow Cytometry
  • Genes, Reporter
  • Genetic Therapy / methods*
  • Genetic Vectors*
  • Green Fluorescent Proteins / analysis
  • Green Fluorescent Proteins / genetics
  • Humans
  • Hydrogen-Ion Concentration
  • Lentivirus / genetics*
  • Lentivirus / physiology
  • Lymphocytes / virology*
  • Sindbis Virus*
  • Transduction, Genetic*
  • Viral Envelope Proteins / genetics
  • Viral Envelope Proteins / physiology*


  • Culture Media
  • Viral Envelope Proteins
  • enhanced green fluorescent protein
  • Green Fluorescent Proteins