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Xi-Ping Huang

11 papers in the library · 3,200 citations · publishing 2012-2026

Papers

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Structural basis of opioid receptor activation by PCP and ketamine

Nature Structural & Molecular Biology June 22, 2026 Qianru Jiang, Jianming Han, Eve Fine et al.

Ketamine offers rapid relief for treatment-resistant depression and severe pain in the clinic, providing immediate benefits that traditional medications often fail to deliver. While its antagonistic action at the N-methyl-D-aspartate receptor (NMDAR) is a key mechanism, ketamine's dual nature as both a promising treatment and a drug with abuse potential suggests its therapeutic effects extend...

The polypharmacology of psychedelics reveals multiple targets for potential therapeutics.

Neuron July 15, 2025 Manish K. Jain, Ryan H. Gumpper, Samuel T. Slocum et al. 42 citations

The classical psychedelics (+)-lysergic acid diethylamide (LSD), psilocybin, and mescaline exert their psychedelic effects via activation of the 5-HT2A serotonin receptor (5-HT2AR). Recent clinical studies have suggested that classical psychedelics may additionally have therapeutic potential for many neuropsychiatric conditions including depression, anxiety, migraine and cluster headaches, drug...

Structure-based discovery of conformationally selective inhibitors of the serotonin transporter.

Cell May 11, 2023 Isha Singh, Anubha Seth, Christian B. Billesbølle et al. 97 citations

The serotonin transporter (SERT) removes synaptic serotonin and is the target of anti-depressant drugs. SERT adopts three conformations: outward-open, occluded, and inward-open. All known inhibitors target the outward-open state except ibogaine, which has unusual anti-depressant and substance-withdrawal effects, and stabilizes the inward-open conformation. Unfortunately, ibogaine's promiscuity...

trans -2-(2,5-Dimethoxy-4-iodophenyl)cyclopropylamine and trans -2-(2,5-dimethoxy-4-bromophenyl)cyclopropylamine as potent agonists for the 5-HT 2 receptor family

UNC Libraries October 31, 2020 Adam Pigott, Bryan L. Roth, Xi-Ping Huang et al.

A strategy to replace the ethylamine side chain of 2,5-dimethoxy-4-iodoamphetamine (DOI, 1a), and 2,5-dimethoxy-4-bromoamphetamine (DOB, 1b) with a cyclopropylamine moiety was successful in leading to compounds with high affinity at the 5-HT2 family of receptors; and the more potent stereoisomer of the cyclopropane analogues had the expected (−)-(1R,2S)-configuration. Screening for affinity at...

The ketamine analogue methoxetamine and 3- and 4-methoxy analogues of phencyclidine are high affinity and selective ligands for the glutamate NMDA receptor.

PLoS One June 14, 2016 Bryan L. Roth, Simon Gibbons, Warunya Arunotayanun et al. 153 citations

In this paper we determined the pharmacological profiles of novel ketamine and phencyclidine analogues currently used as 'designer drugs' and compared them to the parent substances via the resources of the National Institute of Mental Health Psychoactive Drug Screening Program. The ketamine analogues methoxetamine ((RS)-2-(ethylamino)-2-(3-methoxyphenyl)cyclohexanone) and 3-MeO-PCE...

NMDAR inhibition-independent antidepressant actions of ketamine metabolites

Nature April 24, 2016 Panos Zanos, Ruin Moaddel, Patrick J. Morris et al. 1,602 citations

Major depressive disorder affects around 16 per cent of the world population at some point in their lives. Despite the availability of numerous monoaminergic-based antidepressants, most patients require several weeks, if not months, to respond to these treatments, and many patients never attain sustained remission of their symptoms. The non-competitive, glutamatergic NMDAR (N-methyl-d-aspartate...

hERG Blockade by Iboga Alkaloids.

Cardiovascular toxicology 2016 Kenneth Alper, Rong Bai, Nian Liu et al. 35 citations

The iboga alkaloids are a class of naturally occurring and synthetic compounds, some of which modify drug self-administration and withdrawal in humans and preclinical models. Ibogaine, the prototypic iboga alkaloid that is utilized clinically to treat addictions, has been associated with QT prolongation, torsades de pointes and fatalities. hERG blockade as IKr was measured using the whole-cell...

An analysis of the synthetic tryptamines AMT and 5-MeO-DALT: emerging 'Novel Psychoactive Drugs'.

Bioorganic & Medicinal Chemistry Letters June 1, 2013 Warunya Arunotayanun, Jeffrey W Dalley, Xi-Ping Huang et al. 41 citations

Novel Psychoactive Drugs (NPD) can be sold without restriction and are often synthetic analogues of controlled drugs. The tryptamines are an important class of NPD as they bind to the various serotonin (5-HT) receptor subtypes and cause psychosis and hallucinations that can lead to injury or death through misadventure. Here we report on the structure elucidation and receptor binding profiles of...

Structural Basis for Molecular Recognition at Serotonin Receptors

Science March 22, 2013 Chong Wang, Yi Jiang, Jinming Ma et al. 522 citations

Dissecting Serotonin Receptors Serotonin receptors are the targets for many widely used drugs prescribed to treat ailments from depression to obesity and migraine headaches (see the Perspective by Palczewski and Kiser ). C. Wang et al. (p. 610 , published online 21 March) and Wacker et al. (p. 615 , published online 21 March) describe crystal structures of two members of the serotonin family of...

Structural Features for Functional Selectivity at Serotonin Receptors

Science March 21, 2013 Daniel Wacker, Chong Wang, Vsevolod Katritch et al. 689 citations

Dissecting Serotonin Receptors Serotonin receptors are the targets for many widely used drugs prescribed to treat ailments from depression to obesity and migraine headaches (see the Perspective by Palczewski and Kiser ). C. Wang et al. (p. 610 , published online 21 March) and Wacker et al. (p. 615 , published online 21 March) describe crystal structures of two members of the serotonin family of...

trans-2-(2,5-Dimethoxy-4-iodophenyl)cyclopropylamine and trans-2-(2,5-dimethoxy-4-bromophenyl)cyclopropylamine as potent agonists for the 5-HT2 receptor family

Beilstein Journal of Organic Chemistry October 8, 2012 Adam Pigott, Stewart Frescas, John D. Mccorvy et al. 19 citations

A strategy to replace the ethylamine side chain of 2,5-dimethoxy-4-iodoamphetamine (DOI, 1a), and 2,5-dimethoxy-4-bromoamphetamine (DOB, 1b) with a cyclopropylamine moiety was successful in leading to compounds with high affinity at the 5-HT(2) family of receptors; and the more potent stereoisomer of the cyclopropane analogues had the expected (-)-(1R,2S)-configuration. Screening for affinity...