2018 Targeting Trends Review

Shim HS, Park H-J, Lee M-S, Ye M, Shim I (2018) The role of the supramammillary area of the hypothalamus in cognitive functions. Animal Cells and Systems 22:37-44. doi: 10.1080/19768354.2018.1427627

Related Products: 192-IgG-SAP (Cat. #IT-01)

Grillo SL, Stella SL, Jr. (2018) Melanopsin retinal ganglion cells are not labeled in Thy-1YFP-16 transgenic mice. Neuroreport 29:118-122. doi: 10.1097/WNR.0000000000000918 PMID: 29251688

Objective: To determine whether mRGCs are labeled with YFP in Thy-1 YFP-16 transgenic mice. The transgenic Thy-1 YFP mouse line 16 (Thy-1 YFP-16) expresses yellow-fluorescent protein (YFP) in projection neurons, including RGCs.

Summary: The majority of mRGC somas and axons are not labeled with YFP in the transgenic Thy-1 YFP-16 mouse line; therefore, this mouse model may not suitable for research involving mRGC visual pathways.

Usage: Affinity purified rabbit polyclonal antibody raised against melanopsin (1:500) was used to label mRGCs (Retinal ganglion cells expressing melanopsin). Immunolabeled Thy-1 YFP-16 mouse retina with anti-melanopsin and found that majority (∼89%) of mRGCs are not YFP-positive despite numerous other YFP-positive RGCs in the retina.

Related Products: Melanopsin Rabbit Polyclonal, affinity-purified (Cat. #AB-N39)

Dobryakova YV, Kasianov A, Zaichenko MI, Stepanichev MY, Chesnokova EA, Kolosov PM, Markevich VA, Bolshakov AP (2018) Intracerebroventricular administration of 192IgG-saporin alters expression of microglia-associated genes in the dorsal but not ventral hippocampus. Front Mol Neurosci 10:429. doi: 10.3389/fnmol.2017.00429

Objective: To analyze the postponed consequences of cholinergic deficit in different parts of the hippocampus.

Summary: Disturbance of memory-associated behavior after administration of 192-IgG-SAP is associated with upregulation of microglia-associated genes in the dorsal but not ventral hippocampus.

Usage: Rats received bilateral i.c.v.infusions of 192-IgG-SAP (4 mcg/site).

Related Products: 192-IgG-SAP (Cat. #IT-01)

Hamano S, Tomokiyo A, Hasegawa D, Yoshida S, Sugii H, Mitarai H, Fujino S, Wada N, Maeda H (2017) Extracellular matrix from periodontal ligament cells could induce the differentiation of induced pluripotent stem cells to periodontal ligament stem cell-like cells. Stem Cells Dev 27:100-111. doi: 10.1089/scd.2017.0077 PMID: 29160151

Usage: Immunofluorescence staining (1:200 dilution)

Related Products: NGFr (ME20.4, p75) Mouse Monoclonal (Cat. #AB-N07)

Potter H, Alenciks E, Frazier K, Porter A, Fraley GS (2018) Immunolesion of melanopsin neurons causes gonadal regression in Pekin drakes (Anas platyrhynchos domesticus). Gen Comp Endocrinol 256:16-22. doi: 10.1016/j.ygcen.2017.08.006

Objective: Examine effects of loss of melanopsin in drakes.

Summary: Loss of melanopsin in PMM elicits decrease in GnRH mRNA expression, gonadal regression, and sex behaviors in drakes.

Usage: To specifically lesion melanopsin-receptive neurons, 3 μl of an anti-melanopsin-saporin conjugate (MSAP, 100 ng/ul) was injected into the lateral ventricle (n = 10). Control drakes were injected with 3 μl of equimolar unconjugated anti-melanopsin and saporin (SAP, n = 10).

Related Products: Melanopsin-SAP (Cat. #IT-44), Saporin (Cat. #PR-01)

Oliveira LM, Moreira TS, Takakura AC (2018) Raphe pallidus is not important to central chemoreception in a rat model of Parkinson’s disease. Neuroscience 369:350-362. doi: 10.1016/j.neuroscience.2017.11.038

Objective: To investigate if serotonin-expressing neurons in the Raphe pallidus/parapyramidal region (RPa/PPy) are also involved in the modulation of breathing during central chemoreception activation in a PD animal model.

Related Products: Anti-SERT-SAP (Cat. #IT-23), Saporin (Cat. #PR-01)

Trifunovic S, Manojlovic-Stojanoski M, Nestorovic N, Ristic N, Sosic-Jurjevic B, Pendovski L, Milosevic V (2018) Histological and morphofunctional parameters of the hypothalamic-pituitary-adrenal system are sensitive to daidzein treatment in the adult rat. Acta Histochem 120:129-135. doi: 10.1016/j.acthis.2017.12.006 PMID: 29338944

Related Products: Corticotropin Releasing Hormone Rabbit Polyclonal (Cat. #AB-02)

Cua S, Tan HL, Fong WJ, Chin A, Lau A, Ding V, Song Z, Yang Y, Choo A (2018) Targeting of embryonic annexin A2 expressed on ovarian and breast cancer by the novel monoclonal antibody 2448. Oncotarget 9:13206-13221. doi: 10.18632/oncotarget.24152

Objective: To develop mAbs to potentially target oncofetal antigens and be repurposed for antibody or antibody drug conjugate (ADC) therapy.

Summary: The novel IgG1, 2448, was shown to target a unique glycosylated surface epitope on ANXA2. As a possible therapeutic candidate for ovarian and breast cancer, 2448 demonstrated anti-tumor activity via two independent mechanisms of action.

Usage: Cells were seeded in 96-well plates at 1000 or 2000 cells/well. Primary antibody, 2448 or ch2448 (10 μg/mL) was pre-mixed with appropriate secondary saporin conjugate, Mab-ZAP or Hum-ZAP.  The most significant decreases in cell viability (20% to 60%) were observed against the epithelial IGROV1 and MCF7 cell lines.  ATS created a Custom ADC by direct conjugation of saporin to ch2448 (ch2448-SAP).  As a control, an isotype chimeric IgG was also conjugated to saporin (IgG-SAP). Compared to using secondary saporin conjugates, ch2448-SAP induced and increase of  20–30% cytotoxicity.)

Related Products: Mab-ZAP (Cat. #IT-04), Hum-ZAP (Cat. #IT-22), Custom Conjugates

Ferrari LF, Khomula EV, Araldi D, Levine JD (2018) CD44 signaling mediates high molecular weight hyaluronan-induced antihyperalgesia. J Neurosci 38(2):308-321. doi: 10.1523/JNEUROSCI.2695-17.2017

Objective: To study the role of the cognate hyaluronan receptor, CD44, signaling in anti-hyperalgesia induced by high molecular weight hyaluronan (HMWH).

Summary: These results demonstrate the central role of CD44 signaling in HMWH-induced anti-hyperalgesia, and establish it as a therapeutic target against inflammatory and neuropathic pain.

Usage: Both IB4-SAP and SSP-SAP were diluted in saline to doses previously shown to deplete nonpeptidergic (3.2 mcg/rat for IB4-SAP) and peptidergic (100 ng/rat for SSP-SAP) fibers. The toxins were administered intrathecally, in a volume of 20 mcl, 14 d before intradermal injection of LMWH on the dorsum of the hindpaw. Treatment with either conjugate, or a combination of the two, did not significantly affect mechanical nociceptive threshold.

Related Products: IB4-SAP (Cat. #IT-10), SSP-SAP (Cat. #IT-11), Anti-CD44-SAP (Cat. #IT-72)

Delwig A, Chaney S, Bertke A, Verweij J, Quirce S, Larsen D, Yang C, Buhr E, VAN Gelder R, Gallar J, Margolis T, Copenhagen D (2018) Melanopsin expression in the cornea. Vis Neurosci 35:E004. doi: 10.1017/S0952523817000359 PMID: 29905117

Objective: To determine melanopsin expression in cornea.

Summary: Found no light-evoked activation of melanopsin-expressing fibers in cornea or in cell bodies in the TG; melanopsin protein might serve other sensory functions in the cornea. One justification for this idea is that melanopsin expressed in Drosophila photoreceptors can serve as a temperature sensor.

Usage: For the primary staining, we used Anti-Melanopsin at 1:5000 for 3 days.

Related Products: Melanopsin Rabbit Polyclonal, affinity-purified (Cat. #AB-N39)