McDougle M, Quinn D, Diepenbroek C, Singh A, de la Serre C, de Lartigue G (2021) Intact vagal gut-brain signalling prevents hyperphagia and excessive weight gain in response to high-fat high-sugar diet. Acta Physiol (Oxf) 231(3):e13530. doi: 10.1111/apha.13530
Objective: To assess the function of the vagus nerve lack specificity.
Summary: Intact sensory vagal neurons prevent hyperphagia and exacerbation of weight gain in response to a HFHS diet by promoting lipid-mediated satiation.
Usage: Rat nodose ganglia were injected bilaterally with either CCK-SAP or unconjugated saporin as a control.
Wang Z, Jiang C, Yao H, Chen O, Rahman S, Gu Y, Zhao J, Huh Y, Ji RR (2021) Central opioid receptors mediate morphine-induced itch and chronic itch via disinhibition. Brain 144(2):665-681. doi: 10.1093/brain/awaa430
Summary: Itch is a common side effect of opioids, particularly as a result of epidural or intrathecal administration. Notably, morphine-elicited itch was suppressed by intrathecal administration of NPY and abolished by spinal ablation of GRPR+ neurons with intrathecal injection of Bombesin-SAP.
Usage: For ablation of GRPR+ neurons, mice were given an intrathecal injection of 400 ng Bombesin-SAP or Blank-SAP (control) 10 days before behavioral testing.
Zheng F, Chen J, Zhang X, Wang Z, Chen J, Lin X, Huang H, Fu W, Liang J, Wu W, Li B, Yao H, Hu H, Song E (2021) The HIF-1α antisense long non-coding RNA drives a positive feedback loop of HIF-1α mediated transactivation and glycolysis. Nat Commun 12(1):1341. doi: 10.1038/s41467-021-21535-3 PMID: 33637716
Objective: To investigate the contributions of HIF-1 in regulating glycolysis of cancer cells under hypoxia
Summary: HIF Antisense LncRNA (HIFAL) has a critical regulatory role in HIF-1-driven transactivation and glycolysis, identifying HIFAL as a therapeutic target of cancer treatment.
Kang H, Wang Y, Zhong X, Yin W, Li F, Jiang J (2021) [Effect of salt intake on residual renal function in rats receiving peritoneal dialysis]. Nan Fang Yi Ke Da Xue Xue Bao 41(2):264-271. doi: 10.12122/j.issn.1673-4254.2021.02.15 PMID: 33624601
Objective: To assess the effect of salt intake on residual renal function in rats and explore the possible mechanism.
Summary: In rats with chronic renal failure, high salt intake promotes the activation of the renal RAS system, increases blood pressure, and aggravates renal fibrosis to accelerate the decline of residual renal function, and peritoneal dialysis partially reduces the damage of residual renal function induced by high-salt diets by removing excessive sodium.
Chen L, Ke Y, Ma H, Gao L, Zhou Y, Zhu H, Liu H, Zhang F, Zhou W (2021) Fluoxetine and ketamine reverse the depressive but not anxiety behavior induced by lesion of cholinergic neurons in the horizontal limb of the diagonal band of broca in male rat. Front Behav Neurosci 15:602708. doi: 10.3389/fnbeh.2021.602708
Summary: A lesion of horizontal limb of the diagonal band of Broca (HDB) cholinergic neurons and followed hippocampus damage may be involved in the pathogenesis of depression.
Usage: Injections of 192-IgG-SAP were made bilaterally into the HDB in a volume of 0.5 µL per side with a concentration of 0.5 µg/µL.
Li Y, Lv S, Yuan H, Ye G, Mu W, Fu Y, Zhang X, Feng Z, He Y, Chen W (2021) Peripheral nerve regeneration with 3D printed bionic scaffolds loading neural crest stem cell derived Schwann cell progenitors. Advanced Functional Materials 31(16):2010215. doi: 10.1002/adfm.202010215
Objective: Regeneration efficiency and behavior of peripheral nerves are compared under three treatment strategies: 1) transplantation of Schwann cell progenitors induced from purified neural crest stem cells; 2) implantation of a multiscale scaffold based on high-resolution 3D printing; and 3) implantation of this bionic scaffold loading Schwann cell progenitors.
Summary: Implantation of multiscale scaffolds preloaded with neural crest stem cell derived Schwann cell progenitors is the best strategy to promote peripheral nerve regeneration with improved anatomy and function among the three different strategies.
Koeniger T, Bell L, Mifka A, Enders M, Hautmann V, Mekala SR, Kirchner P, Ekici AB, Schulz C, Wörsdörfer P, Mencl S, Kleinschnitz C, Ergün S, Kuerten S (2021) Bone marrow-derived myeloid progenitors in the leptomeninges of adult mice. Stem Cells 39(2):227-239. doi: 10.1002/stem.3311
Summary: This report confirms the presence of myeloid progenitors at the meningeal border of the brain and lays the foundation to unravel their possible functions in CNS surveillance and local immune cell production. Compared to bone marrow transfer after whole-body irradiation, chimerism developed more slowly in the CD45-SAP (biotinylated anti-CD45 mixed with Streptavidin-ZAP) model and only reached around 50% in the blood myeloid compartment 15 weeks after transplantation.
Meng QT, Liu XY, Liu XT, Barry DM, Jin H, Sun Y, Yang Q, Wan L, Jin JH, Shen kF, Munanairi A, Kim R, Yin J, Tao A, Chen ZF (2021) BNP facilitates NMB-mediated histaminergic itch via NPRC-NMBR crosstalk. bioRxiv 2021.01.26.428310. doi: 10.1101/2021.01.26.428310
Marquez J, Dong J, Dong C, Tian C, Serrero G (2021) Identification of prostaglandin F2 receptor negative regulator (PTGFRN) as an internalizable target in cancer cells for antibody-drug conjugate development. PLoS One 16(1):e0246197. doi: 10.1371/journal.pone.0246197
Summary: PTGFRN is a cell-surface protein that is upregulated in certain cancer types, including head and neck and, notably, pediatric medulloblastoma, an aggressive cancer with limited therapeutic options. With the selection of the mouse monoclonal antibody 33B7, the authors identified PTGFRN as a potential therapy target, and show that it is internalized by incubation with 33B7. Purified 33B7 antibody was sent to Advanced Targeting Systems where saporin was directly conjugated to the Fc region of 33B7 using their proprietary cleavable linker.
Usage: In a 96-well plate, 2000 cells/well were plated in triplicate in 100 μL of DMEM/F12 medium supplemented with 2.5% FBS, 0.4 ug/ml 33B7 antibody, and 0.9ug/ml of Fab-ZAP mouse. As an isotype control, cells were incubated with mouse Fab IgG-SAP as control (instead of 33B7) and Fab-ZAP.
Nazmi A, Griffin EW, Field RH, Doyle S, Hennessy E, O’Donnell M, Rehill A, McCarthy A, Healy D, Doran MM, Lowry JP, Cunningham C (2021) Cholinergic signalling in the forebrain controls microglial phenotype and responses to systemic inflammation. bioRxiv 2021.01.18.427123. doi: 10.1101/2021.01.18.427123
