Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 278.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 278.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\27468760
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Leukoc+Biol
2017 ; 101
(2
): 367-376
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Frontline Science: Coincidental null mutation of Csf2r? in a colony of PI3K?-/-
mice causes alveolar macrophage deficiency and fatal respiratory viral infection
#MMPMID27468760
Schneider C
; Nobs SP
; Heer AK
; Hirsch E
; Penninger J
; Siggs OM
; Kopf M
J Leukoc Biol
2017[Feb]; 101
(2
): 367-376
PMID27468760
show ga
PI3Ks have been identified as key signaling proteins involved in many basic
biologic processes in health and disease. Transgenic animals have been essential
tools to study the underlying molecular mechanisms in this context and therefore,
have been widely used to elucidate the role of these factors in many different
settings. More specifically, PI3K?, a subunit highly expressed in the
hematopoietic system, has been implicated to play an important role in many
inflammatory diseases as well as cancer. Here, we report identification of
multiple, additional, previously unknown mutations in the genome of a widely used
PI3K?-deficient (PI3K?(-/-)) mouse colony. These include a STOP mutation in the
GM-CSFR? chain, leading to a complete and specific deficiency in GM-CSF
signaling. PI3K?(-/-) animals consequently lacked alveolar macrophages (AMs) and
succumbed rapidly to influenza virus infection. Furthermore, PI3K?(-/-) mice
carried an additional mutation that affects mucin 2 (Muc2) transcripts. This
protein is strongly involved in the regulation of colorectal cancer, and indeed,
conflicting reports have indicated that PI3K?(-/-) animals spontaneously develop
colorectal tumors. Thus, we uncover previously unknown, confounding factors
present in a strain of PI3K?(-/-) mice, leading to additional deficiencies in
important signaling pathways with potentially wide-ranging implications for the
interpretation of previous studies. By separating the mutations, we established a
unique Csf2ra(-/-) mouse model that allows us to study the role of cell intrinsic
GM-CSFR signaling in vivo without confounding variables introduced by defective
IL-5R and IL-3R signaling in mice lacking the common ? chain (Csf2rb).