Prophylactic orthosteric inhibition of leukocyte integrin CD11b/CD18 prevents long-term fibrotic kidney failure in cynomolgus monkeys

Abbas Dehnadi, A. Benedict Cosimi, Rex Neal Smith, Xiangen Li, José L. Alonso, Terry K. Means and M. Amin Arnaout ()
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Abbas Dehnadi: Massachusetts General Hospital
A. Benedict Cosimi: Massachusetts General Hospital
Rex Neal Smith: Harvard Medical School
Xiangen Li: Harvard Medical School
José L. Alonso: Harvard Medical School
Terry K. Means: Harvard Medical School
M. Amin Arnaout: Harvard Medical School

Nature Communications, 2017, vol. 8, issue 1, 1-11

Abstract: Abstract Ischaemic acute kidney injury (AKI), an inflammatory disease process, often progresses to chronic kidney disease (CKD), with no available effective prophylaxis. This is in part due to lack of clinically relevant CKD models in non-human primates. Here we demonstrate that inhibition of the archetypal innate immune receptor CD11b/CD18 prevents progression of AKI to CKD in cynomolgus monkeys. Severe ischaemia-reperfusion injury of the right kidney, with subsequent periods of the left ureter ligation, causes irreversible right kidney failure 3, 6 or 9 months after AKI. Moreover, prophylactic inactivation of CD11b/CD18, using the orthosteric CD11b/CD18 inhibitor mAb107, improves microvascular perfusion and histopathology, reduces intrarenal pro-inflammatory mediators and salvages kidney function long term. These studies reveal an important early role of CD11b+ leukocytes in post-ischaemic kidney fibrosis and failure, and suggest a potential early therapeutic intervention to mitigate progression of ischaemic AKI to CKD in humans.

Date: 2017
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DOI: 10.1038/ncomms13899

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