Ashok Kulkarni, Ph.D.
NIH/NIDCR
Building 30, Room 130
30 Convent Dr. MSC 4395
Bethesda, MD 20892-4395
United States
Dr. Ashok Kulkarni's research focuses on understanding the cellular mechanisms that promote pain hypersensitivity using both mouse models and human clinical samples. The ability to perform genetic engineering in mice has allowed for the identification of pain genes that modulate pain signaling. As such, his group demonstrated that the activity of the neuronal enzyme CDK5 has a key role in regulating pain perception. A needed advancement beyond the traditional use of rodent models in pain research has recently occurred as human sensory ganglia have become available from organ transplant donors for scientific study. Dr. Kulkarni's lab has thereby been able to complement his rodent pain models with multi-omic analysis of human dorsal root ganglia from donors with chronic pain conditions like rheumatoid arthritis, diabetic painful neuropathy, and fibromyalgia, which are examples of chronic inflammatory pain, neuropathic pain, and nociplastic pain respectively. Such studies are important as 1 in 5 adults in the U.S. experience chronic pain, where women are more frequently affected than men. Principally, a better understanding of human nociception is vitally needed in order to better design targeted pain drugs that lack the side effects of current treatments, such as with opioids. Work with mouse models and with limited but critically important human neuronal samples will be conducted in the lab with the goal of finding new therapeutic targets to control and alleviate pain hypersensitivity.
Biographical Sketch
Dr. Kulkarni received his Ph.D. from Maharaja Sayajirao University in Baroda, India. He was a postdoctoral fellow at Columbia University, New York, from 1982 to 1987, and then a senior staff fellow at the National Institute of Neurological Disorders and Stroke at NIH from 1987 to 1995. In 1995, he joined NIDCR as a tenure-track investigator to head the Functional Genomics Unit and the Gene Transfer Facility. In 2000, he was tenured as a senior investigator and appointed chief of the Functional Genomics Section at NIDCR. His laboratory studies the molecular mechanisms involved in chronic pain affecting the oral and craniofacial areas. He is a member of the American Association for Dental, Oral, and Craniofacial Research; the International Association for Dental, Oral, and Craniofacial Research; the Society for Neuroscience; and the International Association for the Study of Pain. He currently serves as a reviewer for numerous scientific journals and as an editorial board member for Nature Scientific Reports.
- Hall BE, Mazhar K, Macdonald E, Cassidy M, Doty M, Judkins C, et al. Transcriptome analysis of rheumatoid arthritis uncovers genes linked to inflammation-induced pain. Sci Rep. 2024 Oct 29;14(1):25893. doi: 10.1038/s41598-024-77212-0.
- Tiwari MN, Hall BE, Ton AT, Ghetti R, Terse A, Amin N, et al. 2023. Activation of cyclin-dependent kinase 5 broadens action potentials in human sensory neurons. Mol Pain. 2023 Jan-Dec;19:17448069231218353. doi: 10.1177/17448069231218353.
- Doty M, Yun S, Wang Y, Hu M, Cassidy M, Hall B, et al. Integrative multiomic analyses of dorsal root ganglia in diabetic neuropathic pain using proteomics, phospho-proteomics, and metabolomics. Sci Rep. 2022 Oct 11;12(1):17012. doi: 10.1038/s41598-022-21394-y.
- Cho A, Hall BE, Limaye AS, Wang S, Chung MK, Kulkarni AB. Nociceptive signaling through transient receptor potential vanilloid 1 is regulated by Cyclin Dependent Kinase 5-mediated phosphorylation of T407 in vivo. Mol Pain. 2022 Apr;18:17448069221111473. doi: 10.1177/17448069221111473.
- Hall BE, Macdonald E, Cassidy M, Yun S, Sapio MR, Ray P, et al. Transcriptomic analysis of human sensory neurons in painful diabetic neuropathy reveals inflammation and neuronal loss. Sci Rep. 2022 Mar 18;12(1):4729. doi: 10.1038/s41598-022-08100-8.
- Hu M, Doyle AD, Yamada KM, Kulkarni AB. Visualization of trigeminal ganglion sensory neuronal signaling regulated by Cdk5. Cell Rep. 2022 Mar 8;38(10):110458. doi: 10.1016/j.celrep.2022.110458.
- Jendryke T, Prochazkova M, Hall BE, Nordmann GC, Schladt M, Milenkovic VM, et al. TRPV1 function is modulated by Cdk5-mediated phosphorylation: Insights into the molecular mechanism of nociception. Sci Rep. 2016 Feb 23;6:22007. doi: 10.1038/srep22007.
- Hall BE, Zhang L, Sun ZJ, Utreras E, Prochazkova M, Cho A, et al. Conditional TNF-a overexpression in the tooth and alveolar bone results in painful pulpitis and osteitis. J Dent Res. 2016 Feb;95(2):188-95. doi: 10.1177/0022034515612022. Epub 2015 Oct 26.
- Nandula SR, Amarnath S, Molinolo A, Bandyopadhyay BC, Hall B, Goldsmith CM, et al. Female mice are more susceptible to developing inflammatory disorders due to impaired transforming growth factor beta signaling in salivary glands. Arthritis Rheum. 2007 Jun;56(6):1798-1805. doi: 10.1002/art.22715.
- Pareek TK, Keller J, Kesavapany S, Pant HC, Iadarola MJ, Brady RO, et al. Cyclin-dependent kinase 5 activity regulates pain signaling. Proc Natl Acad Sci U S A. 2006 Jan 17;103(3):791-796. doi: 10.1073/pnas.0510405103. Epub 2006 Jan 9.