Flow Dynamics and HSPC Homing in Bone Marrow Microvessels.

Abstract:

:Measurements of flow velocities at the level of individual arterial vessels and sinusoidal capillaries are crucial for understanding the dynamics of hematopoietic stem and progenitor cell homing in the bone marrow vasculature. We have developed two complementary intravital two-photon imaging approaches to determine blood flow dynamics and velocities in multiple vessel segments by capturing the motion of red blood cells. High-resolution spatiotemporal measurements through a cranial window to determine short-time dynamics of flowing blood cells and repetitive centerline scans were used to obtain a detailed flow-profile map with hemodynamic parameters. In addition, we observed the homing of individual hematopoietic stem and progenitor cells and obtained detailed information on their homing behavior. With our imaging setup, we determined flow patterns at cellular resolution, blood flow velocities and wall shear stress in small arterial vessels and highly branched sinusoidal capillaries, and the cellular dynamics of hematopoietic stem and progenitor cell homing.

journal_name

Cell Rep

journal_title

Cell reports

authors

Bixel MG,Kusumbe AP,Ramasamy SK,Sivaraj KK,Butz S,Vestweber D,Adams RH

doi

10.1016/j.celrep.2017.01.042

subject

Has Abstract

pub_date

2017-02-14 00:00:00

pages

1804-1816

issue

7

issn

2211-1247

pii

S2211-1247(17)30097-9

journal_volume

18

pub_type

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