Our findings demonstrate the very early onset of reticulocyte membrane modifications in SCA asymptomatic infants and allow an insight into the first pathological changes with the release of stress reticulocytes expressing a distinctive profile of adhesion molecules.
Moreover, in the presence of C10 alkane, the RFU ratio in BYL13 expressing Pdr1mt1 + Pdr3mt was about 62 % lower than that with pESC-Ura, likely due to Ict1p-mediated membrane modifications in the presence of C10 alkane.
ColR (Pcar_1726) and its cognate sensor kinase ColS (Pcar_1725) share 65%and37%7% sequence identity, respectively, with homologs that regulate outer membrane modification in Pseudomonas putida[ 52].
Despite the fact that much is known about membrane modification in response to pressure variation in SS9 [ 29, 30], these experiments reveal the possible involvement of a previously unrecognized gene in fatty acid unsaturation.
Slow growing pathogenic mycobacteria such as M.tb modify their mycolic acids by cyclopropanation which is a common membrane modification in bacteria and plants [ 28, 29] and essential for viability, drug resistance and cell wall integrity [ 30] playing an important role in M.tb pathogenesis [ 31, 32].
In patients with the high-rosetting phenotype, 4-HNE-membrane modifications in npRBCs were independent of parasitaemia.
The data available on membrane modifications are in any case insufficient to formulate a clear hypothesis as to the mechanisms of membrane destabilization and G− RBC destruction.
To evaluate the influence of the membrane modifications we observed in CC erythrocytes on the net cell surface charge, we compared the ZP of individual AA and CC erythrocytes.
A positive linear relationship (R = 0·108, P = 0·043, N = 40) was found between rosette frequency and 4-HNE conjugates in npRBCs (Fig 4A), indicating that infections by the rosetting phenotype may significantly increase the membrane modifications by 4-HNE in npRBCs in vivo, leading to the increased removal of these modified cells.
Finally, several genes encoding proteins involved in cell expansion required PFT1 for their glucose-responsive expression, including two Lipid Transfer Proteins (LTPs) involved in membrane modifications, and Expansin 4, which is involved in cell wall extension [ 33, 34].
Considering the roles of the efflux pump genes in multi-drug resistance (MDR) [ 28], CTT1 in ROS detoxification [ 29], and ICT1 in membrane modifications [ 18], we hypothesized that intracellular alkane amount, ROS levels, the efficiency of alkane transport, and membrane damage might be involved in the increased alkane tolerance of BYL13 expressing Pdr1mt1 + Pdr3mt or Pdr3wt.
