Gut-seeded α-synuclein fibrils promote gut dysfunction and brain pathology specifically in aged mice

C Challis, A Hori, TR Sampson, BB Yoo… - Nature …, 2020 - nature.com
Parkinson’s disease is a synucleinopathy that is characterized by motor dysfunction, death
of midbrain dopaminergic neurons and accumulation of α-synuclein (α-Syn) aggregates. …

Systemic AAV vectors for widespread and targeted gene delivery in rodents

RC Challis, S Ravindra Kumar, KY Chan, C Challis… - Nature protocols, 2019 - nature.com
We recently developed adeno-associated virus (AAV) capsids to facilitate efficient and
noninvasive gene transfer to the central and peripheral nervous systems. However, a detailed …

Adeno-associated virus toolkit to target diverse brain cells

RC Challis, S Ravindra Kumar, X Chen… - Annual review of …, 2022 - annualreviews.org
Recombinant adeno-associated viruses (AAVs) are commonly used gene delivery vehicles
for neuroscience research. They have two engineerable features: the capsid (outer protein …

[HTML][HTML] Identification of peripheral neural circuits that regulate heart rate using optogenetic and viral vector strategies

PS Rajendran, RC Challis, CC Fowlkes… - Nature …, 2019 - nature.com
Heart rate is under the precise control of the autonomic nervous system. However, the wiring
of peripheral neural circuits that regulate heart rate is poorly understood. Here, we develop …

[PDF][PDF] An olfactory cilia pattern in the mammalian nose ensures high sensitivity to odors

RC Challis, H Tian, J Wang, J He, J Jiang, X Chen… - Current Biology, 2015 - cell.com
In many sensory organs, specialized receptors are strategically arranged to enhance
detection sensitivity and acuity. It is unclear whether the olfactory system utilizes a similar …

[PDF][PDF] Glutamate in primary afferents is required for itch transmission

…, M Gautam, J Bhattarai, W Olson, K Beattie, RC Challis… - Neuron, 2022 - cell.com
Whether glutamate or itch-selective neurotransmitters are used to confer itch specificity is still
under debate. We focused on an itch-selective population of primary afferents expressing …

Chitinase-like protein Ym2 (Chil4) regulates regeneration of the olfactory epithelium via interaction with inflammation

…, X Zhang, H Tian, JP Bhattarai, RC Challis… - Journal of …, 2021 - Soc Neuroscience
The adult olfactory epithelium (OE) regenerates sensory neurons and nonsensory
supporting cells from resident stem cells after injury. How supporting cells contribute to OE …

Sour taste finds closure in a potassium channel

RC Challis, M Ma - Proceedings of the National Academy of …, 2016 - National Acad Sciences
Taste cells in taste buds of the mammalian tongue and oral cavity can detect five basic
modalities: sweet, bitter, umami, salty, and sour. Each taste cell expresses distinct molecular …

Widespread and targeted gene expression by systemic AAV vectors: Production, purification, and administration

RC Challis, SR Kumar, KY Chan, C Challis, MJ Jang… - BioRXiv, 2018 - biorxiv.org
We recently developed novel AAV capsids for efficient and noninvasive gene transfer across
the central and peripheral nervous systems. In this protocol, we describe how to produce …

[HTML][HTML] Genetic ablation of type III adenylyl cyclase exerts region-specific effects on cilia architecture in the mouse nose

RC Challis, H Tian, W Yin, M Ma - PLoS One, 2016 - journals.plos.org
We recently reported that olfactory sensory neurons in the dorsal zone of the mouse olfactory
epithelium exhibit drastic location-dependent differences in cilia length. Furthermore, …